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| -rw-r--r-- | assets/netcut/lib/videojs/video.js | 56159 |
1 files changed, 56159 insertions, 0 deletions
diff --git a/assets/netcut/lib/videojs/video.js b/assets/netcut/lib/videojs/video.js new file mode 100644 index 0000000..dd05932 --- /dev/null +++ b/assets/netcut/lib/videojs/video.js @@ -0,0 +1,56159 @@ +/** + * @license + * Video.js 7.2.4 <http://videojs.com/> + * Copyright Brightcove, Inc. <https://www.brightcove.com/> + * Available under Apache License Version 2.0 + * <https://github.com/videojs/video.js/blob/master/LICENSE> + * + * Includes vtt.js <https://github.com/mozilla/vtt.js> + * Available under Apache License Version 2.0 + * <https://github.com/mozilla/vtt.js/blob/master/LICENSE> + */ + +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global.videojs = factory()); +}(this, (function () { + var version = "7.2.4"; + + var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {}; + + function createCommonjsModule(fn, module) { + return module = { exports: {} }, fn(module, module.exports), module.exports; + } + + var win; + + if (typeof window !== "undefined") { + win = window; + } else if (typeof commonjsGlobal !== "undefined") { + win = commonjsGlobal; + } else if (typeof self !== "undefined") { + win = self; + } else { + win = {}; + } + + var window_1 = win; + + var empty = {}; + + var empty$1 = /*#__PURE__*/Object.freeze({ + default: empty + }); + + var minDoc = ( empty$1 && empty ) || empty$1; + + var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal : typeof window !== 'undefined' ? window : {}; + + var doccy; + + if (typeof document !== 'undefined') { + doccy = document; + } else { + doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4']; + + if (!doccy) { + doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc; + } + } + + var document_1 = doccy; + + /** + * @file log.js + * @module log + */ + + var log = void 0; + + // This is the private tracking variable for logging level. + var level = 'info'; + + // This is the private tracking variable for the logging history. + var history = []; + + /** + * Log messages to the console and history based on the type of message + * + * @private + * @param {string} type + * The name of the console method to use. + * + * @param {Array} args + * The arguments to be passed to the matching console method. + */ + var logByType = function logByType(type, args) { + var lvl = log.levels[level]; + var lvlRegExp = new RegExp('^(' + lvl + ')$'); + + if (type !== 'log') { + + // Add the type to the front of the message when it's not "log". + args.unshift(type.toUpperCase() + ':'); + } + + // Add a clone of the args at this point to history. + if (history) { + history.push([].concat(args)); + } + + // Add console prefix after adding to history. + args.unshift('VIDEOJS:'); + + // If there's no console then don't try to output messages, but they will + // still be stored in history. + if (!window_1.console) { + return; + } + + // Was setting these once outside of this function, but containing them + // in the function makes it easier to test cases where console doesn't exist + // when the module is executed. + var fn = window_1.console[type]; + + if (!fn && type === 'debug') { + // Certain browsers don't have support for console.debug. For those, we + // should default to the closest comparable log. + fn = window_1.console.info || window_1.console.log; + } + + // Bail out if there's no console or if this type is not allowed by the + // current logging level. + if (!fn || !lvl || !lvlRegExp.test(type)) { + return; + } + + fn[Array.isArray(args) ? 'apply' : 'call'](window_1.console, args); + }; + + /** + * Logs plain debug messages. Similar to `console.log`. + * + * @class + * @param {Mixed[]} args + * One or more messages or objects that should be logged. + */ + log = function log() { + for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + + logByType('log', args); + }; + + /** + * Enumeration of available logging levels, where the keys are the level names + * and the values are `|`-separated strings containing logging methods allowed + * in that logging level. These strings are used to create a regular expression + * matching the function name being called. + * + * Levels provided by video.js are: + * + * - `off`: Matches no calls. Any value that can be cast to `false` will have + * this effect. The most restrictive. + * - `all`: Matches only Video.js-provided functions (`debug`, `log`, + * `log.warn`, and `log.error`). + * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls. + * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls. + * - `warn`: Matches `log.warn` and `log.error` calls. + * - `error`: Matches only `log.error` calls. + * + * @type {Object} + */ + log.levels = { + all: 'debug|log|warn|error', + off: '', + debug: 'debug|log|warn|error', + info: 'log|warn|error', + warn: 'warn|error', + error: 'error', + DEFAULT: level + }; + + /** + * Get or set the current logging level. If a string matching a key from + * {@link log.levels} is provided, acts as a setter. Regardless of argument, + * returns the current logging level. + * + * @param {string} [lvl] + * Pass to set a new logging level. + * + * @return {string} + * The current logging level. + */ + log.level = function (lvl) { + if (typeof lvl === 'string') { + if (!log.levels.hasOwnProperty(lvl)) { + throw new Error('"' + lvl + '" in not a valid log level'); + } + level = lvl; + } + return level; + }; + + /** + * Returns an array containing everything that has been logged to the history. + * + * This array is a shallow clone of the internal history record. However, its + * contents are _not_ cloned; so, mutating objects inside this array will + * mutate them in history. + * + * @return {Array} + */ + log.history = function () { + return history ? [].concat(history) : []; + }; + + /** + * Clears the internal history tracking, but does not prevent further history + * tracking. + */ + log.history.clear = function () { + if (history) { + history.length = 0; + } + }; + + /** + * Disable history tracking if it is currently enabled. + */ + log.history.disable = function () { + if (history !== null) { + history.length = 0; + history = null; + } + }; + + /** + * Enable history tracking if it is currently disabled. + */ + log.history.enable = function () { + if (history === null) { + history = []; + } + }; + + /** + * Logs error messages. Similar to `console.error`. + * + * @param {Mixed[]} args + * One or more messages or objects that should be logged as an error + */ + log.error = function () { + for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { + args[_key2] = arguments[_key2]; + } + + return logByType('error', args); + }; + + /** + * Logs warning messages. Similar to `console.warn`. + * + * @param {Mixed[]} args + * One or more messages or objects that should be logged as a warning. + */ + log.warn = function () { + for (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) { + args[_key3] = arguments[_key3]; + } + + return logByType('warn', args); + }; + + /** + * Logs debug messages. Similar to `console.debug`, but may also act as a comparable + * log if `console.debug` is not available + * + * @param {Mixed[]} args + * One or more messages or objects that should be logged as debug. + */ + log.debug = function () { + for (var _len4 = arguments.length, args = Array(_len4), _key4 = 0; _key4 < _len4; _key4++) { + args[_key4] = arguments[_key4]; + } + + return logByType('debug', args); + }; + + var log$1 = log; + + function clean(s) { + return s.replace(/\n\r?\s*/g, ''); + } + + var tsml = function tsml(sa) { + var s = '', + i = 0; + + for (; i < arguments.length; i++) { + s += clean(sa[i]) + (arguments[i + 1] || ''); + }return s; + }; + + var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { + return typeof obj; + } : function (obj) { + return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; + }; + + var classCallCheck = function (instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + }; + + var inherits = function (subClass, superClass) { + if (typeof superClass !== "function" && superClass !== null) { + throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); + } + + subClass.prototype = Object.create(superClass && superClass.prototype, { + constructor: { + value: subClass, + enumerable: false, + writable: true, + configurable: true + } + }); + if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; + }; + + var possibleConstructorReturn = function (self, call) { + if (!self) { + throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); + } + + return call && (typeof call === "object" || typeof call === "function") ? call : self; + }; + + var taggedTemplateLiteralLoose = function (strings, raw) { + strings.raw = raw; + return strings; + }; + + /** + * @file obj.js + * @module obj + */ + + /** + * @callback obj:EachCallback + * + * @param {Mixed} value + * The current key for the object that is being iterated over. + * + * @param {string} key + * The current key-value for object that is being iterated over + */ + + /** + * @callback obj:ReduceCallback + * + * @param {Mixed} accum + * The value that is accumulating over the reduce loop. + * + * @param {Mixed} value + * The current key for the object that is being iterated over. + * + * @param {string} key + * The current key-value for object that is being iterated over + * + * @return {Mixed} + * The new accumulated value. + */ + var toString = Object.prototype.toString; + + /** + * Get the keys of an Object + * + * @param {Object} + * The Object to get the keys from + * + * @return {string[]} + * An array of the keys from the object. Returns an empty array if the + * object passed in was invalid or had no keys. + * + * @private + */ + var keys = function keys(object) { + return isObject(object) ? Object.keys(object) : []; + }; + + /** + * Array-like iteration for objects. + * + * @param {Object} object + * The object to iterate over + * + * @param {obj:EachCallback} fn + * The callback function which is called for each key in the object. + */ + function each(object, fn) { + keys(object).forEach(function (key) { + return fn(object[key], key); + }); + } + + /** + * Array-like reduce for objects. + * + * @param {Object} object + * The Object that you want to reduce. + * + * @param {Function} fn + * A callback function which is called for each key in the object. It + * receives the accumulated value and the per-iteration value and key + * as arguments. + * + * @param {Mixed} [initial = 0] + * Starting value + * + * @return {Mixed} + * The final accumulated value. + */ + function reduce(object, fn) { + var initial = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0; + + return keys(object).reduce(function (accum, key) { + return fn(accum, object[key], key); + }, initial); + } + + /** + * Object.assign-style object shallow merge/extend. + * + * @param {Object} target + * @param {Object} ...sources + * @return {Object} + */ + function assign(target) { + for (var _len = arguments.length, sources = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + sources[_key - 1] = arguments[_key]; + } + + if (Object.assign) { + return Object.assign.apply(Object, [target].concat(sources)); + } + + sources.forEach(function (source) { + if (!source) { + return; + } + + each(source, function (value, key) { + target[key] = value; + }); + }); + + return target; + } + + /** + * Returns whether a value is an object of any kind - including DOM nodes, + * arrays, regular expressions, etc. Not functions, though. + * + * This avoids the gotcha where using `typeof` on a `null` value + * results in `'object'`. + * + * @param {Object} value + * @return {Boolean} + */ + function isObject(value) { + return !!value && (typeof value === 'undefined' ? 'undefined' : _typeof(value)) === 'object'; + } + + /** + * Returns whether an object appears to be a "plain" object - that is, a + * direct instance of `Object`. + * + * @param {Object} value + * @return {Boolean} + */ + function isPlain(value) { + return isObject(value) && toString.call(value) === '[object Object]' && value.constructor === Object; + } + + /** + * @file computed-style.js + * @module computed-style + */ + + /** + * A safe getComputedStyle. + * + * This is needed because in Firefox, if the player is loaded in an iframe with + * `display:none`, then `getComputedStyle` returns `null`, so, we do a null-check to + * make sure that the player doesn't break in these cases. + * + * @param {Element} el + * The element you want the computed style of + * + * @param {string} prop + * The property name you want + * + * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397 + * + * @static + * @const + */ + function computedStyle(el, prop) { + if (!el || !prop) { + return ''; + } + + if (typeof window_1.getComputedStyle === 'function') { + var cs = window_1.getComputedStyle(el); + + return cs ? cs[prop] : ''; + } + + return ''; + } + + var _templateObject = taggedTemplateLiteralLoose(['Setting attributes in the second argument of createEl()\n has been deprecated. Use the third argument instead.\n createEl(type, properties, attributes). Attempting to set ', ' to ', '.'], ['Setting attributes in the second argument of createEl()\n has been deprecated. Use the third argument instead.\n createEl(type, properties, attributes). Attempting to set ', ' to ', '.']); + + /** + * Detect if a value is a string with any non-whitespace characters. + * + * @param {string} str + * The string to check + * + * @return {boolean} + * - True if the string is non-blank + * - False otherwise + * + */ + function isNonBlankString(str) { + return typeof str === 'string' && /\S/.test(str); + } + + /** + * Throws an error if the passed string has whitespace. This is used by + * class methods to be relatively consistent with the classList API. + * + * @param {string} str + * The string to check for whitespace. + * + * @throws {Error} + * Throws an error if there is whitespace in the string. + * + */ + function throwIfWhitespace(str) { + if (/\s/.test(str)) { + throw new Error('class has illegal whitespace characters'); + } + } + + /** + * Produce a regular expression for matching a className within an elements className. + * + * @param {string} className + * The className to generate the RegExp for. + * + * @return {RegExp} + * The RegExp that will check for a specific `className` in an elements + * className. + */ + function classRegExp(className) { + return new RegExp('(^|\\s)' + className + '($|\\s)'); + } + + /** + * Whether the current DOM interface appears to be real. + * + * @return {Boolean} + */ + function isReal() { + // Both document and window will never be undefined thanks to `global`. + return document_1 === window_1.document; + } + + /** + * Determines, via duck typing, whether or not a value is a DOM element. + * + * @param {Mixed} value + * The thing to check + * + * @return {boolean} + * - True if it is a DOM element + * - False otherwise + */ + function isEl(value) { + return isObject(value) && value.nodeType === 1; + } + + /** + * Determines if the current DOM is embedded in an iframe. + * + * @return {boolean} + * + */ + function isInFrame() { + + // We need a try/catch here because Safari will throw errors when attempting + // to get either `parent` or `self` + try { + return window_1.parent !== window_1.self; + } catch (x) { + return true; + } + } + + /** + * Creates functions to query the DOM using a given method. + * + * @param {string} method + * The method to create the query with. + * + * @return {Function} + * The query method + */ + function createQuerier(method) { + return function (selector, context) { + if (!isNonBlankString(selector)) { + return document_1[method](null); + } + if (isNonBlankString(context)) { + context = document_1.querySelector(context); + } + + var ctx = isEl(context) ? context : document_1; + + return ctx[method] && ctx[method](selector); + }; + } + + /** + * Creates an element and applies properties. + * + * @param {string} [tagName='div'] + * Name of tag to be created. + * + * @param {Object} [properties={}] + * Element properties to be applied. + * + * @param {Object} [attributes={}] + * Element attributes to be applied. + * + * @param {String|Element|TextNode|Array|Function} [content] + * Contents for the element (see: {@link dom:normalizeContent}) + * + * @return {Element} + * The element that was created. + */ + function createEl() { + var tagName = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'div'; + var properties = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; + var content = arguments[3]; + + var el = document_1.createElement(tagName); + + Object.getOwnPropertyNames(properties).forEach(function (propName) { + var val = properties[propName]; + + // See #2176 + // We originally were accepting both properties and attributes in the + // same object, but that doesn't work so well. + if (propName.indexOf('aria-') !== -1 || propName === 'role' || propName === 'type') { + log$1.warn(tsml(_templateObject, propName, val)); + el.setAttribute(propName, val); + + // Handle textContent since it's not supported everywhere and we have a + // method for it. + } else if (propName === 'textContent') { + textContent(el, val); + } else { + el[propName] = val; + } + }); + + Object.getOwnPropertyNames(attributes).forEach(function (attrName) { + el.setAttribute(attrName, attributes[attrName]); + }); + + if (content) { + appendContent(el, content); + } + + return el; + } + + /** + * Injects text into an element, replacing any existing contents entirely. + * + * @param {Element} el + * The element to add text content into + * + * @param {string} text + * The text content to add. + * + * @return {Element} + * The element with added text content. + */ + function textContent(el, text) { + if (typeof el.textContent === 'undefined') { + el.innerText = text; + } else { + el.textContent = text; + } + return el; + } + + /** + * Insert an element as the first child node of another + * + * @param {Element} child + * Element to insert + * + * @param {Element} parent + * Element to insert child into + */ + function prependTo(child, parent) { + if (parent.firstChild) { + parent.insertBefore(child, parent.firstChild); + } else { + parent.appendChild(child); + } + } + + /** + * Check if an element has a CSS class + * + * @param {Element} element + * Element to check + * + * @param {string} classToCheck + * Class name to check for + * + * @return {boolean} + * - True if the element had the class + * - False otherwise. + * + * @throws {Error} + * Throws an error if `classToCheck` has white space. + */ + function hasClass(element, classToCheck) { + throwIfWhitespace(classToCheck); + if (element.classList) { + return element.classList.contains(classToCheck); + } + return classRegExp(classToCheck).test(element.className); + } + + /** + * Add a CSS class name to an element + * + * @param {Element} element + * Element to add class name to. + * + * @param {string} classToAdd + * Class name to add. + * + * @return {Element} + * The dom element with the added class name. + */ + function addClass(element, classToAdd) { + if (element.classList) { + element.classList.add(classToAdd); + + // Don't need to `throwIfWhitespace` here because `hasElClass` will do it + // in the case of classList not being supported. + } else if (!hasClass(element, classToAdd)) { + element.className = (element.className + ' ' + classToAdd).trim(); + } + + return element; + } + + /** + * Remove a CSS class name from an element + * + * @param {Element} element + * Element to remove a class name from. + * + * @param {string} classToRemove + * Class name to remove + * + * @return {Element} + * The dom element with class name removed. + */ + function removeClass(element, classToRemove) { + if (element.classList) { + element.classList.remove(classToRemove); + } else { + throwIfWhitespace(classToRemove); + element.className = element.className.split(/\s+/).filter(function (c) { + return c !== classToRemove; + }).join(' '); + } + + return element; + } + + /** + * The callback definition for toggleElClass. + * + * @callback Dom~PredicateCallback + * @param {Element} element + * The DOM element of the Component. + * + * @param {string} classToToggle + * The `className` that wants to be toggled + * + * @return {boolean|undefined} + * - If true the `classToToggle` will get added to `element`. + * - If false the `classToToggle` will get removed from `element`. + * - If undefined this callback will be ignored + */ + + /** + * Adds or removes a CSS class name on an element depending on an optional + * condition or the presence/absence of the class name. + * + * @param {Element} element + * The element to toggle a class name on. + * + * @param {string} classToToggle + * The class that should be toggled + * + * @param {boolean|PredicateCallback} [predicate] + * See the return value for {@link Dom~PredicateCallback} + * + * @return {Element} + * The element with a class that has been toggled. + */ + function toggleClass(element, classToToggle, predicate) { + + // This CANNOT use `classList` internally because IE11 does not support the + // second parameter to the `classList.toggle()` method! Which is fine because + // `classList` will be used by the add/remove functions. + var has = hasClass(element, classToToggle); + + if (typeof predicate === 'function') { + predicate = predicate(element, classToToggle); + } + + if (typeof predicate !== 'boolean') { + predicate = !has; + } + + // If the necessary class operation matches the current state of the + // element, no action is required. + if (predicate === has) { + return; + } + + if (predicate) { + addClass(element, classToToggle); + } else { + removeClass(element, classToToggle); + } + + return element; + } + + /** + * Apply attributes to an HTML element. + * + * @param {Element} el + * Element to add attributes to. + * + * @param {Object} [attributes] + * Attributes to be applied. + */ + function setAttributes(el, attributes) { + Object.getOwnPropertyNames(attributes).forEach(function (attrName) { + var attrValue = attributes[attrName]; + + if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) { + el.removeAttribute(attrName); + } else { + el.setAttribute(attrName, attrValue === true ? '' : attrValue); + } + }); + } + + /** + * Get an element's attribute values, as defined on the HTML tag + * Attributes are not the same as properties. They're defined on the tag + * or with setAttribute (which shouldn't be used with HTML) + * This will return true or false for boolean attributes. + * + * @param {Element} tag + * Element from which to get tag attributes. + * + * @return {Object} + * All attributes of the element. + */ + function getAttributes(tag) { + var obj = {}; + + // known boolean attributes + // we can check for matching boolean properties, but not all browsers + // and not all tags know about these attributes, so, we still want to check them manually + var knownBooleans = ',' + 'autoplay,controls,playsinline,loop,muted,default,defaultMuted' + ','; + + if (tag && tag.attributes && tag.attributes.length > 0) { + var attrs = tag.attributes; + + for (var i = attrs.length - 1; i >= 0; i--) { + var attrName = attrs[i].name; + var attrVal = attrs[i].value; + + // check for known booleans + // the matching element property will return a value for typeof + if (typeof tag[attrName] === 'boolean' || knownBooleans.indexOf(',' + attrName + ',') !== -1) { + // the value of an included boolean attribute is typically an empty + // string ('') which would equal false if we just check for a false value. + // we also don't want support bad code like autoplay='false' + attrVal = attrVal !== null ? true : false; + } + + obj[attrName] = attrVal; + } + } + + return obj; + } + + /** + * Get the value of an element's attribute + * + * @param {Element} el + * A DOM element + * + * @param {string} attribute + * Attribute to get the value of + * + * @return {string} + * value of the attribute + */ + function getAttribute(el, attribute) { + return el.getAttribute(attribute); + } + + /** + * Set the value of an element's attribute + * + * @param {Element} el + * A DOM element + * + * @param {string} attribute + * Attribute to set + * + * @param {string} value + * Value to set the attribute to + */ + function setAttribute(el, attribute, value) { + el.setAttribute(attribute, value); + } + + /** + * Remove an element's attribute + * + * @param {Element} el + * A DOM element + * + * @param {string} attribute + * Attribute to remove + */ + function removeAttribute(el, attribute) { + el.removeAttribute(attribute); + } + + /** + * Attempt to block the ability to select text while dragging controls + */ + function blockTextSelection() { + document_1.body.focus(); + document_1.onselectstart = function () { + return false; + }; + } + + /** + * Turn off text selection blocking + */ + function unblockTextSelection() { + document_1.onselectstart = function () { + return true; + }; + } + + /** + * Identical to the native `getBoundingClientRect` function, but ensures that + * the method is supported at all (it is in all browsers we claim to support) + * and that the element is in the DOM before continuing. + * + * This wrapper function also shims properties which are not provided by some + * older browsers (namely, IE8). + * + * Additionally, some browsers do not support adding properties to a + * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard + * properties (except `x` and `y` which are not widely supported). This helps + * avoid implementations where keys are non-enumerable. + * + * @param {Element} el + * Element whose `ClientRect` we want to calculate. + * + * @return {Object|undefined} + * Always returns a plain + */ + function getBoundingClientRect(el) { + if (el && el.getBoundingClientRect && el.parentNode) { + var rect = el.getBoundingClientRect(); + var result = {}; + + ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(function (k) { + if (rect[k] !== undefined) { + result[k] = rect[k]; + } + }); + + if (!result.height) { + result.height = parseFloat(computedStyle(el, 'height')); + } + + if (!result.width) { + result.width = parseFloat(computedStyle(el, 'width')); + } + + return result; + } + } + + /** + * The postion of a DOM element on the page. + * + * @typedef {Object} module:dom~Position + * + * @property {number} left + * Pixels to the left + * + * @property {number} top + * Pixels on top + */ + + /** + * Offset Left. + * getBoundingClientRect technique from + * John Resig + * + * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/ + * + * @param {Element} el + * Element from which to get offset + * + * @return {module:dom~Position} + * The position of the element that was passed in. + */ + function findPosition(el) { + var box = void 0; + + if (el.getBoundingClientRect && el.parentNode) { + box = el.getBoundingClientRect(); + } + + if (!box) { + return { + left: 0, + top: 0 + }; + } + + var docEl = document_1.documentElement; + var body = document_1.body; + + var clientLeft = docEl.clientLeft || body.clientLeft || 0; + var scrollLeft = window_1.pageXOffset || body.scrollLeft; + var left = box.left + scrollLeft - clientLeft; + + var clientTop = docEl.clientTop || body.clientTop || 0; + var scrollTop = window_1.pageYOffset || body.scrollTop; + var top = box.top + scrollTop - clientTop; + + // Android sometimes returns slightly off decimal values, so need to round + return { + left: Math.round(left), + top: Math.round(top) + }; + } + + /** + * x and y coordinates for a dom element or mouse pointer + * + * @typedef {Object} Dom~Coordinates + * + * @property {number} x + * x coordinate in pixels + * + * @property {number} y + * y coordinate in pixels + */ + + /** + * Get pointer position in element + * Returns an object with x and y coordinates. + * The base on the coordinates are the bottom left of the element. + * + * @param {Element} el + * Element on which to get the pointer position on + * + * @param {EventTarget~Event} event + * Event object + * + * @return {Dom~Coordinates} + * A Coordinates object corresponding to the mouse position. + * + */ + function getPointerPosition(el, event) { + var position = {}; + var box = findPosition(el); + var boxW = el.offsetWidth; + var boxH = el.offsetHeight; + + var boxY = box.top; + var boxX = box.left; + var pageY = event.pageY; + var pageX = event.pageX; + + if (event.changedTouches) { + pageX = event.changedTouches[0].pageX; + pageY = event.changedTouches[0].pageY; + } + + position.y = Math.max(0, Math.min(1, (boxY - pageY + boxH) / boxH)); + position.x = Math.max(0, Math.min(1, (pageX - boxX) / boxW)); + + return position; + } + + /** + * Determines, via duck typing, whether or not a value is a text node. + * + * @param {Mixed} value + * Check if this value is a text node. + * + * @return {boolean} + * - True if it is a text node + * - False otherwise + */ + function isTextNode(value) { + return isObject(value) && value.nodeType === 3; + } + + /** + * Empties the contents of an element. + * + * @param {Element} el + * The element to empty children from + * + * @return {Element} + * The element with no children + */ + function emptyEl(el) { + while (el.firstChild) { + el.removeChild(el.firstChild); + } + return el; + } + + /** + * Normalizes content for eventual insertion into the DOM. + * + * This allows a wide range of content definition methods, but protects + * from falling into the trap of simply writing to `innerHTML`, which is + * an XSS concern. + * + * The content for an element can be passed in multiple types and + * combinations, whose behavior is as follows: + * + * @param {String|Element|TextNode|Array|Function} content + * - String: Normalized into a text node. + * - Element/TextNode: Passed through. + * - Array: A one-dimensional array of strings, elements, nodes, or functions + * (which return single strings, elements, or nodes). + * - Function: If the sole argument, is expected to produce a string, element, + * node, or array as defined above. + * + * @return {Array} + * All of the content that was passed in normalized. + */ + function normalizeContent(content) { + + // First, invoke content if it is a function. If it produces an array, + // that needs to happen before normalization. + if (typeof content === 'function') { + content = content(); + } + + // Next up, normalize to an array, so one or many items can be normalized, + // filtered, and returned. + return (Array.isArray(content) ? content : [content]).map(function (value) { + + // First, invoke value if it is a function to produce a new value, + // which will be subsequently normalized to a Node of some kind. + if (typeof value === 'function') { + value = value(); + } + + if (isEl(value) || isTextNode(value)) { + return value; + } + + if (typeof value === 'string' && /\S/.test(value)) { + return document_1.createTextNode(value); + } + }).filter(function (value) { + return value; + }); + } + + /** + * Normalizes and appends content to an element. + * + * @param {Element} el + * Element to append normalized content to. + * + * + * @param {String|Element|TextNode|Array|Function} content + * See the `content` argument of {@link dom:normalizeContent} + * + * @return {Element} + * The element with appended normalized content. + */ + function appendContent(el, content) { + normalizeContent(content).forEach(function (node) { + return el.appendChild(node); + }); + return el; + } + + /** + * Normalizes and inserts content into an element; this is identical to + * `appendContent()`, except it empties the element first. + * + * @param {Element} el + * Element to insert normalized content into. + * + * @param {String|Element|TextNode|Array|Function} content + * See the `content` argument of {@link dom:normalizeContent} + * + * @return {Element} + * The element with inserted normalized content. + * + */ + function insertContent(el, content) { + return appendContent(emptyEl(el), content); + } + + /** + * Check if event was a single left click + * + * @param {EventTarget~Event} event + * Event object + * + * @return {boolean} + * - True if a left click + * - False if not a left click + */ + function isSingleLeftClick(event) { + // Note: if you create something draggable, be sure to + // call it on both `mousedown` and `mousemove` event, + // otherwise `mousedown` should be enough for a button + + if (event.button === undefined && event.buttons === undefined) { + // Why do we need `buttons` ? + // Because, middle mouse sometimes have this: + // e.button === 0 and e.buttons === 4 + // Furthermore, we want to prevent combination click, something like + // HOLD middlemouse then left click, that would be + // e.button === 0, e.buttons === 5 + // just `button` is not gonna work + + // Alright, then what this block does ? + // this is for chrome `simulate mobile devices` + // I want to support this as well + + return true; + } + + if (event.button === 0 && event.buttons === undefined) { + // Touch screen, sometimes on some specific device, `buttons` + // doesn't have anything (safari on ios, blackberry...) + + return true; + } + + if (event.button !== 0 || event.buttons !== 1) { + // This is the reason we have those if else block above + // if any special case we can catch and let it slide + // we do it above, when get to here, this definitely + // is-not-left-click + + return false; + } + + return true; + } + + /** + * Finds a single DOM element matching `selector` within the optional + * `context` of another DOM element (defaulting to `document`). + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelector`. + * + * @param {Element|String} [context=document] + * A DOM element within which to query. Can also be a selector + * string in which case the first matching element will be used + * as context. If missing (or no element matches selector), falls + * back to `document`. + * + * @return {Element|null} + * The element that was found or null. + */ + var $ = createQuerier('querySelector'); + + /** + * Finds a all DOM elements matching `selector` within the optional + * `context` of another DOM element (defaulting to `document`). + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelectorAll`. + * + * @param {Element|String} [context=document] + * A DOM element within which to query. Can also be a selector + * string in which case the first matching element will be used + * as context. If missing (or no element matches selector), falls + * back to `document`. + * + * @return {NodeList} + * A element list of elements that were found. Will be empty if none were found. + * + */ + var $$ = createQuerier('querySelectorAll'); + + var Dom = /*#__PURE__*/Object.freeze({ + isReal: isReal, + isEl: isEl, + isInFrame: isInFrame, + createEl: createEl, + textContent: textContent, + prependTo: prependTo, + hasClass: hasClass, + addClass: addClass, + removeClass: removeClass, + toggleClass: toggleClass, + setAttributes: setAttributes, + getAttributes: getAttributes, + getAttribute: getAttribute, + setAttribute: setAttribute, + removeAttribute: removeAttribute, + blockTextSelection: blockTextSelection, + unblockTextSelection: unblockTextSelection, + getBoundingClientRect: getBoundingClientRect, + findPosition: findPosition, + getPointerPosition: getPointerPosition, + isTextNode: isTextNode, + emptyEl: emptyEl, + normalizeContent: normalizeContent, + appendContent: appendContent, + insertContent: insertContent, + isSingleLeftClick: isSingleLeftClick, + $: $, + $$: $$ + }); + + /** + * @file guid.js + * @module guid + */ + + /** + * Unique ID for an element or function + * @type {Number} + */ + var _guid = 1; + + /** + * Get a unique auto-incrementing ID by number that has not been returned before. + * + * @return {number} + * A new unique ID. + */ + function newGUID() { + return _guid++; + } + + /** + * @file dom-data.js + * @module dom-data + */ + + /** + * Element Data Store. + * + * Allows for binding data to an element without putting it directly on the + * element. Ex. Event listeners are stored here. + * (also from jsninja.com, slightly modified and updated for closure compiler) + * + * @type {Object} + * @private + */ + var elData = {}; + + /* + * Unique attribute name to store an element's guid in + * + * @type {String} + * @constant + * @private + */ + var elIdAttr = 'vdata' + new Date().getTime(); + + /** + * Returns the cache object where data for an element is stored + * + * @param {Element} el + * Element to store data for. + * + * @return {Object} + * The cache object for that el that was passed in. + */ + function getData(el) { + var id = el[elIdAttr]; + + if (!id) { + id = el[elIdAttr] = newGUID(); + } + + if (!elData[id]) { + elData[id] = {}; + } + + return elData[id]; + } + + /** + * Returns whether or not an element has cached data + * + * @param {Element} el + * Check if this element has cached data. + * + * @return {boolean} + * - True if the DOM element has cached data. + * - False otherwise. + */ + function hasData(el) { + var id = el[elIdAttr]; + + if (!id) { + return false; + } + + return !!Object.getOwnPropertyNames(elData[id]).length; + } + + /** + * Delete data for the element from the cache and the guid attr from getElementById + * + * @param {Element} el + * Remove cached data for this element. + */ + function removeData(el) { + var id = el[elIdAttr]; + + if (!id) { + return; + } + + // Remove all stored data + delete elData[id]; + + // Remove the elIdAttr property from the DOM node + try { + delete el[elIdAttr]; + } catch (e) { + if (el.removeAttribute) { + el.removeAttribute(elIdAttr); + } else { + // IE doesn't appear to support removeAttribute on the document element + el[elIdAttr] = null; + } + } + } + + /** + * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/) + * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible) + * This should work very similarly to jQuery's events, however it's based off the book version which isn't as + * robust as jquery's, so there's probably some differences. + * + * @module events + */ + + /** + * Clean up the listener cache and dispatchers + * + * @param {Element|Object} elem + * Element to clean up + * + * @param {string} type + * Type of event to clean up + */ + function _cleanUpEvents(elem, type) { + var data = getData(elem); + + // Remove the events of a particular type if there are none left + if (data.handlers[type].length === 0) { + delete data.handlers[type]; + // data.handlers[type] = null; + // Setting to null was causing an error with data.handlers + + // Remove the meta-handler from the element + if (elem.removeEventListener) { + elem.removeEventListener(type, data.dispatcher, false); + } else if (elem.detachEvent) { + elem.detachEvent('on' + type, data.dispatcher); + } + } + + // Remove the events object if there are no types left + if (Object.getOwnPropertyNames(data.handlers).length <= 0) { + delete data.handlers; + delete data.dispatcher; + delete data.disabled; + } + + // Finally remove the element data if there is no data left + if (Object.getOwnPropertyNames(data).length === 0) { + removeData(elem); + } + } + + /** + * Loops through an array of event types and calls the requested method for each type. + * + * @param {Function} fn + * The event method we want to use. + * + * @param {Element|Object} elem + * Element or object to bind listeners to + * + * @param {string} type + * Type of event to bind to. + * + * @param {EventTarget~EventListener} callback + * Event listener. + */ + function _handleMultipleEvents(fn, elem, types, callback) { + types.forEach(function (type) { + // Call the event method for each one of the types + fn(elem, type, callback); + }); + } + + /** + * Fix a native event to have standard property values + * + * @param {Object} event + * Event object to fix. + * + * @return {Object} + * Fixed event object. + */ + function fixEvent(event) { + + function returnTrue() { + return true; + } + + function returnFalse() { + return false; + } + + // Test if fixing up is needed + // Used to check if !event.stopPropagation instead of isPropagationStopped + // But native events return true for stopPropagation, but don't have + // other expected methods like isPropagationStopped. Seems to be a problem + // with the Javascript Ninja code. So we're just overriding all events now. + if (!event || !event.isPropagationStopped) { + var old = event || window_1.event; + + event = {}; + // Clone the old object so that we can modify the values event = {}; + // IE8 Doesn't like when you mess with native event properties + // Firefox returns false for event.hasOwnProperty('type') and other props + // which makes copying more difficult. + // TODO: Probably best to create a whitelist of event props + for (var key in old) { + // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y + // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation + // and webkitMovementX/Y + if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY') { + // Chrome 32+ warns if you try to copy deprecated returnValue, but + // we still want to if preventDefault isn't supported (IE8). + if (!(key === 'returnValue' && old.preventDefault)) { + event[key] = old[key]; + } + } + } + + // The event occurred on this element + if (!event.target) { + event.target = event.srcElement || document_1; + } + + // Handle which other element the event is related to + if (!event.relatedTarget) { + event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement; + } + + // Stop the default browser action + event.preventDefault = function () { + if (old.preventDefault) { + old.preventDefault(); + } + event.returnValue = false; + old.returnValue = false; + event.defaultPrevented = true; + }; + + event.defaultPrevented = false; + + // Stop the event from bubbling + event.stopPropagation = function () { + if (old.stopPropagation) { + old.stopPropagation(); + } + event.cancelBubble = true; + old.cancelBubble = true; + event.isPropagationStopped = returnTrue; + }; + + event.isPropagationStopped = returnFalse; + + // Stop the event from bubbling and executing other handlers + event.stopImmediatePropagation = function () { + if (old.stopImmediatePropagation) { + old.stopImmediatePropagation(); + } + event.isImmediatePropagationStopped = returnTrue; + event.stopPropagation(); + }; + + event.isImmediatePropagationStopped = returnFalse; + + // Handle mouse position + if (event.clientX !== null && event.clientX !== undefined) { + var doc = document_1.documentElement; + var body = document_1.body; + + event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0); + event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0); + } + + // Handle key presses + event.which = event.charCode || event.keyCode; + + // Fix button for mouse clicks: + // 0 == left; 1 == middle; 2 == right + if (event.button !== null && event.button !== undefined) { + + // The following is disabled because it does not pass videojs-standard + // and... yikes. + /* eslint-disable */ + event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0; + /* eslint-enable */ + } + } + + // Returns fixed-up instance + return event; + } + + /** + * Whether passive event listeners are supported + */ + var _supportsPassive = false; + + (function () { + try { + var opts = Object.defineProperty({}, 'passive', { + get: function get() { + _supportsPassive = true; + } + }); + + window_1.addEventListener('test', null, opts); + window_1.removeEventListener('test', null, opts); + } catch (e) { + // disregard + } + })(); + + /** + * Touch events Chrome expects to be passive + */ + var passiveEvents = ['touchstart', 'touchmove']; + + /** + * Add an event listener to element + * It stores the handler function in a separate cache object + * and adds a generic handler to the element's event, + * along with a unique id (guid) to the element. + * + * @param {Element|Object} elem + * Element or object to bind listeners to + * + * @param {string|string[]} type + * Type of event to bind to. + * + * @param {EventTarget~EventListener} fn + * Event listener. + */ + function on(elem, type, fn) { + if (Array.isArray(type)) { + return _handleMultipleEvents(on, elem, type, fn); + } + + var data = getData(elem); + + // We need a place to store all our handler data + if (!data.handlers) { + data.handlers = {}; + } + + if (!data.handlers[type]) { + data.handlers[type] = []; + } + + if (!fn.guid) { + fn.guid = newGUID(); + } + + data.handlers[type].push(fn); + + if (!data.dispatcher) { + data.disabled = false; + + data.dispatcher = function (event, hash) { + + if (data.disabled) { + return; + } + + event = fixEvent(event); + + var handlers = data.handlers[event.type]; + + if (handlers) { + // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off. + var handlersCopy = handlers.slice(0); + + for (var m = 0, n = handlersCopy.length; m < n; m++) { + if (event.isImmediatePropagationStopped()) { + break; + } else { + try { + handlersCopy[m].call(elem, event, hash); + } catch (e) { + log$1.error(e); + } + } + } + } + }; + } + + if (data.handlers[type].length === 1) { + if (elem.addEventListener) { + var options = false; + + if (_supportsPassive && passiveEvents.indexOf(type) > -1) { + options = { passive: true }; + } + elem.addEventListener(type, data.dispatcher, options); + } else if (elem.attachEvent) { + elem.attachEvent('on' + type, data.dispatcher); + } + } + } + + /** + * Removes event listeners from an element + * + * @param {Element|Object} elem + * Object to remove listeners from. + * + * @param {string|string[]} [type] + * Type of listener to remove. Don't include to remove all events from element. + * + * @param {EventTarget~EventListener} [fn] + * Specific listener to remove. Don't include to remove listeners for an event + * type. + */ + function off(elem, type, fn) { + // Don't want to add a cache object through getElData if not needed + if (!hasData(elem)) { + return; + } + + var data = getData(elem); + + // If no events exist, nothing to unbind + if (!data.handlers) { + return; + } + + if (Array.isArray(type)) { + return _handleMultipleEvents(off, elem, type, fn); + } + + // Utility function + var removeType = function removeType(el, t) { + data.handlers[t] = []; + _cleanUpEvents(el, t); + }; + + // Are we removing all bound events? + if (type === undefined) { + for (var t in data.handlers) { + if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) { + removeType(elem, t); + } + } + return; + } + + var handlers = data.handlers[type]; + + // If no handlers exist, nothing to unbind + if (!handlers) { + return; + } + + // If no listener was provided, remove all listeners for type + if (!fn) { + removeType(elem, type); + return; + } + + // We're only removing a single handler + if (fn.guid) { + for (var n = 0; n < handlers.length; n++) { + if (handlers[n].guid === fn.guid) { + handlers.splice(n--, 1); + } + } + } + + _cleanUpEvents(elem, type); + } + + /** + * Trigger an event for an element + * + * @param {Element|Object} elem + * Element to trigger an event on + * + * @param {EventTarget~Event|string} event + * A string (the type) or an event object with a type attribute + * + * @param {Object} [hash] + * data hash to pass along with the event + * + * @return {boolean|undefined} + * - Returns the opposite of `defaultPrevented` if default was prevented + * - Otherwise returns undefined + */ + function trigger(elem, event, hash) { + // Fetches element data and a reference to the parent (for bubbling). + // Don't want to add a data object to cache for every parent, + // so checking hasElData first. + var elemData = hasData(elem) ? getData(elem) : {}; + var parent = elem.parentNode || elem.ownerDocument; + // type = event.type || event, + // handler; + + // If an event name was passed as a string, creates an event out of it + if (typeof event === 'string') { + event = { type: event, target: elem }; + } else if (!event.target) { + event.target = elem; + } + + // Normalizes the event properties. + event = fixEvent(event); + + // If the passed element has a dispatcher, executes the established handlers. + if (elemData.dispatcher) { + elemData.dispatcher.call(elem, event, hash); + } + + // Unless explicitly stopped or the event does not bubble (e.g. media events) + // recursively calls this function to bubble the event up the DOM. + if (parent && !event.isPropagationStopped() && event.bubbles === true) { + trigger.call(null, parent, event, hash); + + // If at the top of the DOM, triggers the default action unless disabled. + } else if (!parent && !event.defaultPrevented) { + var targetData = getData(event.target); + + // Checks if the target has a default action for this event. + if (event.target[event.type]) { + // Temporarily disables event dispatching on the target as we have already executed the handler. + targetData.disabled = true; + // Executes the default action. + if (typeof event.target[event.type] === 'function') { + event.target[event.type](); + } + // Re-enables event dispatching. + targetData.disabled = false; + } + } + + // Inform the triggerer if the default was prevented by returning false + return !event.defaultPrevented; + } + + /** + * Trigger a listener only once for an event + * + * @param {Element|Object} elem + * Element or object to bind to. + * + * @param {string|string[]} type + * Name/type of event + * + * @param {Event~EventListener} fn + * Event Listener function + */ + function one(elem, type, fn) { + if (Array.isArray(type)) { + return _handleMultipleEvents(one, elem, type, fn); + } + var func = function func() { + off(elem, type, func); + fn.apply(this, arguments); + }; + + // copy the guid to the new function so it can removed using the original function's ID + func.guid = fn.guid = fn.guid || newGUID(); + on(elem, type, func); + } + + var Events = /*#__PURE__*/Object.freeze({ + fixEvent: fixEvent, + on: on, + off: off, + trigger: trigger, + one: one + }); + + /** + * @file setup.js - Functions for setting up a player without + * user interaction based on the data-setup `attribute` of the video tag. + * + * @module setup + */ + + var _windowLoaded = false; + var videojs = void 0; + + /** + * Set up any tags that have a data-setup `attribute` when the player is started. + */ + var autoSetup = function autoSetup() { + + // Protect against breakage in non-browser environments and check global autoSetup option. + if (!isReal() || videojs.options.autoSetup === false) { + return; + } + + var vids = Array.prototype.slice.call(document_1.getElementsByTagName('video')); + var audios = Array.prototype.slice.call(document_1.getElementsByTagName('audio')); + var divs = Array.prototype.slice.call(document_1.getElementsByTagName('video-js')); + var mediaEls = vids.concat(audios, divs); + + // Check if any media elements exist + if (mediaEls && mediaEls.length > 0) { + + for (var i = 0, e = mediaEls.length; i < e; i++) { + var mediaEl = mediaEls[i]; + + // Check if element exists, has getAttribute func. + if (mediaEl && mediaEl.getAttribute) { + + // Make sure this player hasn't already been set up. + if (mediaEl.player === undefined) { + var options = mediaEl.getAttribute('data-setup'); + + // Check if data-setup attr exists. + // We only auto-setup if they've added the data-setup attr. + if (options !== null) { + // Create new video.js instance. + videojs(mediaEl); + } + } + + // If getAttribute isn't defined, we need to wait for the DOM. + } else { + autoSetupTimeout(1); + break; + } + } + + // No videos were found, so keep looping unless page is finished loading. + } else if (!_windowLoaded) { + autoSetupTimeout(1); + } + }; + + /** + * Wait until the page is loaded before running autoSetup. This will be called in + * autoSetup if `hasLoaded` returns false. + * + * @param {number} wait + * How long to wait in ms + * + * @param {module:videojs} [vjs] + * The videojs library function + */ + function autoSetupTimeout(wait, vjs) { + if (vjs) { + videojs = vjs; + } + + window_1.setTimeout(autoSetup, wait); + } + + if (isReal() && document_1.readyState === 'complete') { + _windowLoaded = true; + } else { + /** + * Listen for the load event on window, and set _windowLoaded to true. + * + * @listens load + */ + one(window_1, 'load', function () { + _windowLoaded = true; + }); + } + + /** + * @file stylesheet.js + * @module stylesheet + */ + + /** + * Create a DOM syle element given a className for it. + * + * @param {string} className + * The className to add to the created style element. + * + * @return {Element} + * The element that was created. + */ + var createStyleElement = function createStyleElement(className) { + var style = document_1.createElement('style'); + + style.className = className; + + return style; + }; + + /** + * Add text to a DOM element. + * + * @param {Element} el + * The Element to add text content to. + * + * @param {string} content + * The text to add to the element. + */ + var setTextContent = function setTextContent(el, content) { + if (el.styleSheet) { + el.styleSheet.cssText = content; + } else { + el.textContent = content; + } + }; + + /** + * @file fn.js + * @module fn + */ + + /** + * Bind (a.k.a proxy or Context). A simple method for changing the context of a function + * It also stores a unique id on the function so it can be easily removed from events. + * + * @param {Mixed} context + * The object to bind as scope. + * + * @param {Function} fn + * The function to be bound to a scope. + * + * @param {number} [uid] + * An optional unique ID for the function to be set + * + * @return {Function} + * The new function that will be bound into the context given + */ + var bind = function bind(context, fn, uid) { + // Make sure the function has a unique ID + if (!fn.guid) { + fn.guid = newGUID(); + } + + // Create the new function that changes the context + var bound = function bound() { + return fn.apply(context, arguments); + }; + + // Allow for the ability to individualize this function + // Needed in the case where multiple objects might share the same prototype + // IF both items add an event listener with the same function, then you try to remove just one + // it will remove both because they both have the same guid. + // when using this, you need to use the bind method when you remove the listener as well. + // currently used in text tracks + bound.guid = uid ? uid + '_' + fn.guid : fn.guid; + + return bound; + }; + + /** + * Wraps the given function, `fn`, with a new function that only invokes `fn` + * at most once per every `wait` milliseconds. + * + * @param {Function} fn + * The function to be throttled. + * + * @param {Number} wait + * The number of milliseconds by which to throttle. + * + * @return {Function} + */ + var throttle = function throttle(fn, wait) { + var last = Date.now(); + + var throttled = function throttled() { + var now = Date.now(); + + if (now - last >= wait) { + fn.apply(undefined, arguments); + last = now; + } + }; + + return throttled; + }; + + /** + * Creates a debounced function that delays invoking `func` until after `wait` + * milliseconds have elapsed since the last time the debounced function was + * invoked. + * + * Inspired by lodash and underscore implementations. + * + * @param {Function} func + * The function to wrap with debounce behavior. + * + * @param {number} wait + * The number of milliseconds to wait after the last invocation. + * + * @param {boolean} [immediate] + * Whether or not to invoke the function immediately upon creation. + * + * @param {Object} [context=window] + * The "context" in which the debounced function should debounce. For + * example, if this function should be tied to a Video.js player, + * the player can be passed here. Alternatively, defaults to the + * global `window` object. + * + * @return {Function} + * A debounced function. + */ + var debounce = function debounce(func, wait, immediate) { + var context = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : window_1; + + var timeout = void 0; + + var cancel = function cancel() { + context.clearTimeout(timeout); + timeout = null; + }; + + /* eslint-disable consistent-this */ + var debounced = function debounced() { + var self = this; + var args = arguments; + + var _later = function later() { + timeout = null; + _later = null; + if (!immediate) { + func.apply(self, args); + } + }; + + if (!timeout && immediate) { + func.apply(self, args); + } + + context.clearTimeout(timeout); + timeout = context.setTimeout(_later, wait); + }; + /* eslint-enable consistent-this */ + + debounced.cancel = cancel; + + return debounced; + }; + + /** + * @file src/js/event-target.js + */ + + /** + * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It + * adds shorthand functions that wrap around lengthy functions. For example: + * the `on` function is a wrapper around `addEventListener`. + * + * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget} + * @class EventTarget + */ + var EventTarget = function EventTarget() {}; + + /** + * A Custom DOM event. + * + * @typedef {Object} EventTarget~Event + * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent} + */ + + /** + * All event listeners should follow the following format. + * + * @callback EventTarget~EventListener + * @this {EventTarget} + * + * @param {EventTarget~Event} event + * the event that triggered this function + * + * @param {Object} [hash] + * hash of data sent during the event + */ + + /** + * An object containing event names as keys and booleans as values. + * + * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger} + * will have extra functionality. See that function for more information. + * + * @property EventTarget.prototype.allowedEvents_ + * @private + */ + EventTarget.prototype.allowedEvents_ = {}; + + /** + * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a + * function that will get called when an event with a certain name gets triggered. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {EventTarget~EventListener} fn + * The function to call with `EventTarget`s + */ + EventTarget.prototype.on = function (type, fn) { + // Remove the addEventListener alias before calling Events.on + // so we don't get into an infinite type loop + var ael = this.addEventListener; + + this.addEventListener = function () {}; + on(this, type, fn); + this.addEventListener = ael; + }; + + /** + * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic + * the standard DOM API. + * + * @function + * @see {@link EventTarget#on} + */ + EventTarget.prototype.addEventListener = EventTarget.prototype.on; + + /** + * Removes an `event listener` for a specific event from an instance of `EventTarget`. + * This makes it so that the `event listener` will no longer get called when the + * named event happens. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {EventTarget~EventListener} fn + * The function to remove. + */ + EventTarget.prototype.off = function (type, fn) { + off(this, type, fn); + }; + + /** + * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic + * the standard DOM API. + * + * @function + * @see {@link EventTarget#off} + */ + EventTarget.prototype.removeEventListener = EventTarget.prototype.off; + + /** + * This function will add an `event listener` that gets triggered only once. After the + * first trigger it will get removed. This is like adding an `event listener` + * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself. + * + * @param {string|string[]} type + * An event name or an array of event names. + * + * @param {EventTarget~EventListener} fn + * The function to be called once for each event name. + */ + EventTarget.prototype.one = function (type, fn) { + // Remove the addEventListener alialing Events.on + // so we don't get into an infinite type loop + var ael = this.addEventListener; + + this.addEventListener = function () {}; + one(this, type, fn); + this.addEventListener = ael; + }; + + /** + * This function causes an event to happen. This will then cause any `event listeners` + * that are waiting for that event, to get called. If there are no `event listeners` + * for an event then nothing will happen. + * + * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`. + * Trigger will also call the `on` + `uppercaseEventName` function. + * + * Example: + * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call + * `onClick` if it exists. + * + * @param {string|EventTarget~Event|Object} event + * The name of the event, an `Event`, or an object with a key of type set to + * an event name. + */ + EventTarget.prototype.trigger = function (event) { + var type = event.type || event; + + if (typeof event === 'string') { + event = { type: type }; + } + event = fixEvent(event); + + if (this.allowedEvents_[type] && this['on' + type]) { + this['on' + type](event); + } + + trigger(this, event); + }; + + /** + * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic + * the standard DOM API. + * + * @function + * @see {@link EventTarget#trigger} + */ + EventTarget.prototype.dispatchEvent = EventTarget.prototype.trigger; + + var EVENT_MAP = void 0; + + EventTarget.prototype.queueTrigger = function (event) { + var _this = this; + + // only set up EVENT_MAP if it'll be used + if (!EVENT_MAP) { + EVENT_MAP = new Map(); + } + + var type = event.type || event; + var map = EVENT_MAP.get(this); + + if (!map) { + map = new Map(); + EVENT_MAP.set(this, map); + } + + var oldTimeout = map.get(type); + + map.delete(type); + window_1.clearTimeout(oldTimeout); + + var timeout = window_1.setTimeout(function () { + // if we cleared out all timeouts for the current target, delete its map + if (map.size === 0) { + map = null; + EVENT_MAP.delete(_this); + } + + _this.trigger(event); + }, 0); + + map.set(type, timeout); + }; + + /** + * @file mixins/evented.js + * @module evented + */ + + /** + * Returns whether or not an object has had the evented mixin applied. + * + * @param {Object} object + * An object to test. + * + * @return {boolean} + * Whether or not the object appears to be evented. + */ + var isEvented = function isEvented(object) { + return object instanceof EventTarget || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(function (k) { + return typeof object[k] === 'function'; + }); + }; + + /** + * Whether a value is a valid event type - non-empty string or array. + * + * @private + * @param {string|Array} type + * The type value to test. + * + * @return {boolean} + * Whether or not the type is a valid event type. + */ + var isValidEventType = function isValidEventType(type) { + return ( + // The regex here verifies that the `type` contains at least one non- + // whitespace character. + typeof type === 'string' && /\S/.test(type) || Array.isArray(type) && !!type.length + ); + }; + + /** + * Validates a value to determine if it is a valid event target. Throws if not. + * + * @private + * @throws {Error} + * If the target does not appear to be a valid event target. + * + * @param {Object} target + * The object to test. + */ + var validateTarget = function validateTarget(target) { + if (!target.nodeName && !isEvented(target)) { + throw new Error('Invalid target; must be a DOM node or evented object.'); + } + }; + + /** + * Validates a value to determine if it is a valid event target. Throws if not. + * + * @private + * @throws {Error} + * If the type does not appear to be a valid event type. + * + * @param {string|Array} type + * The type to test. + */ + var validateEventType = function validateEventType(type) { + if (!isValidEventType(type)) { + throw new Error('Invalid event type; must be a non-empty string or array.'); + } + }; + + /** + * Validates a value to determine if it is a valid listener. Throws if not. + * + * @private + * @throws {Error} + * If the listener is not a function. + * + * @param {Function} listener + * The listener to test. + */ + var validateListener = function validateListener(listener) { + if (typeof listener !== 'function') { + throw new Error('Invalid listener; must be a function.'); + } + }; + + /** + * Takes an array of arguments given to `on()` or `one()`, validates them, and + * normalizes them into an object. + * + * @private + * @param {Object} self + * The evented object on which `on()` or `one()` was called. This + * object will be bound as the `this` value for the listener. + * + * @param {Array} args + * An array of arguments passed to `on()` or `one()`. + * + * @return {Object} + * An object containing useful values for `on()` or `one()` calls. + */ + var normalizeListenArgs = function normalizeListenArgs(self, args) { + + // If the number of arguments is less than 3, the target is always the + // evented object itself. + var isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_; + var target = void 0; + var type = void 0; + var listener = void 0; + + if (isTargetingSelf) { + target = self.eventBusEl_; + + // Deal with cases where we got 3 arguments, but we are still listening to + // the evented object itself. + if (args.length >= 3) { + args.shift(); + } + + type = args[0]; + listener = args[1]; + } else { + target = args[0]; + type = args[1]; + listener = args[2]; + } + + validateTarget(target); + validateEventType(type); + validateListener(listener); + + listener = bind(self, listener); + + return { isTargetingSelf: isTargetingSelf, target: target, type: type, listener: listener }; + }; + + /** + * Adds the listener to the event type(s) on the target, normalizing for + * the type of target. + * + * @private + * @param {Element|Object} target + * A DOM node or evented object. + * + * @param {string} method + * The event binding method to use ("on" or "one"). + * + * @param {string|Array} type + * One or more event type(s). + * + * @param {Function} listener + * A listener function. + */ + var listen = function listen(target, method, type, listener) { + validateTarget(target); + + if (target.nodeName) { + Events[method](target, type, listener); + } else { + target[method](type, listener); + } + }; + + /** + * Contains methods that provide event capabilities to an object which is passed + * to {@link module:evented|evented}. + * + * @mixin EventedMixin + */ + var EventedMixin = { + + /** + * Add a listener to an event (or events) on this object or another evented + * object. + * + * @param {string|Array|Element|Object} targetOrType + * If this is a string or array, it represents the event type(s) + * that will trigger the listener. + * + * Another evented object can be passed here instead, which will + * cause the listener to listen for events on _that_ object. + * + * In either case, the listener's `this` value will be bound to + * this object. + * + * @param {string|Array|Function} typeOrListener + * If the first argument was a string or array, this should be the + * listener function. Otherwise, this is a string or array of event + * type(s). + * + * @param {Function} [listener] + * If the first argument was another evented object, this will be + * the listener function. + */ + on: function on$$1() { + var _this = this; + + for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + + var _normalizeListenArgs = normalizeListenArgs(this, args), + isTargetingSelf = _normalizeListenArgs.isTargetingSelf, + target = _normalizeListenArgs.target, + type = _normalizeListenArgs.type, + listener = _normalizeListenArgs.listener; + + listen(target, 'on', type, listener); + + // If this object is listening to another evented object. + if (!isTargetingSelf) { + + // If this object is disposed, remove the listener. + var removeListenerOnDispose = function removeListenerOnDispose() { + return _this.off(target, type, listener); + }; + + // Use the same function ID as the listener so we can remove it later it + // using the ID of the original listener. + removeListenerOnDispose.guid = listener.guid; + + // Add a listener to the target's dispose event as well. This ensures + // that if the target is disposed BEFORE this object, we remove the + // removal listener that was just added. Otherwise, we create a memory leak. + var removeRemoverOnTargetDispose = function removeRemoverOnTargetDispose() { + return _this.off('dispose', removeListenerOnDispose); + }; + + // Use the same function ID as the listener so we can remove it later + // it using the ID of the original listener. + removeRemoverOnTargetDispose.guid = listener.guid; + + listen(this, 'on', 'dispose', removeListenerOnDispose); + listen(target, 'on', 'dispose', removeRemoverOnTargetDispose); + } + }, + + + /** + * Add a listener to an event (or events) on this object or another evented + * object. The listener will only be called once and then removed. + * + * @param {string|Array|Element|Object} targetOrType + * If this is a string or array, it represents the event type(s) + * that will trigger the listener. + * + * Another evented object can be passed here instead, which will + * cause the listener to listen for events on _that_ object. + * + * In either case, the listener's `this` value will be bound to + * this object. + * + * @param {string|Array|Function} typeOrListener + * If the first argument was a string or array, this should be the + * listener function. Otherwise, this is a string or array of event + * type(s). + * + * @param {Function} [listener] + * If the first argument was another evented object, this will be + * the listener function. + */ + one: function one$$1() { + var _this2 = this; + + for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { + args[_key2] = arguments[_key2]; + } + + var _normalizeListenArgs2 = normalizeListenArgs(this, args), + isTargetingSelf = _normalizeListenArgs2.isTargetingSelf, + target = _normalizeListenArgs2.target, + type = _normalizeListenArgs2.type, + listener = _normalizeListenArgs2.listener; + + // Targeting this evented object. + + + if (isTargetingSelf) { + listen(target, 'one', type, listener); + + // Targeting another evented object. + } else { + var wrapper = function wrapper() { + for (var _len3 = arguments.length, largs = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) { + largs[_key3] = arguments[_key3]; + } + + _this2.off(target, type, wrapper); + listener.apply(null, largs); + }; + + // Use the same function ID as the listener so we can remove it later + // it using the ID of the original listener. + wrapper.guid = listener.guid; + listen(target, 'one', type, wrapper); + } + }, + + + /** + * Removes listener(s) from event(s) on an evented object. + * + * @param {string|Array|Element|Object} [targetOrType] + * If this is a string or array, it represents the event type(s). + * + * Another evented object can be passed here instead, in which case + * ALL 3 arguments are _required_. + * + * @param {string|Array|Function} [typeOrListener] + * If the first argument was a string or array, this may be the + * listener function. Otherwise, this is a string or array of event + * type(s). + * + * @param {Function} [listener] + * If the first argument was another evented object, this will be + * the listener function; otherwise, _all_ listeners bound to the + * event type(s) will be removed. + */ + off: function off$$1(targetOrType, typeOrListener, listener) { + + // Targeting this evented object. + if (!targetOrType || isValidEventType(targetOrType)) { + off(this.eventBusEl_, targetOrType, typeOrListener); + + // Targeting another evented object. + } else { + var target = targetOrType; + var type = typeOrListener; + + // Fail fast and in a meaningful way! + validateTarget(target); + validateEventType(type); + validateListener(listener); + + // Ensure there's at least a guid, even if the function hasn't been used + listener = bind(this, listener); + + // Remove the dispose listener on this evented object, which was given + // the same guid as the event listener in on(). + this.off('dispose', listener); + + if (target.nodeName) { + off(target, type, listener); + off(target, 'dispose', listener); + } else if (isEvented(target)) { + target.off(type, listener); + target.off('dispose', listener); + } + } + }, + + + /** + * Fire an event on this evented object, causing its listeners to be called. + * + * @param {string|Object} event + * An event type or an object with a type property. + * + * @param {Object} [hash] + * An additional object to pass along to listeners. + * + * @returns {boolean} + * Whether or not the default behavior was prevented. + */ + trigger: function trigger$$1(event, hash) { + return trigger(this.eventBusEl_, event, hash); + } + }; + + /** + * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object. + * + * @param {Object} target + * The object to which to add event methods. + * + * @param {Object} [options={}] + * Options for customizing the mixin behavior. + * + * @param {String} [options.eventBusKey] + * By default, adds a `eventBusEl_` DOM element to the target object, + * which is used as an event bus. If the target object already has a + * DOM element that should be used, pass its key here. + * + * @return {Object} + * The target object. + */ + function evented(target) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var eventBusKey = options.eventBusKey; + + // Set or create the eventBusEl_. + + if (eventBusKey) { + if (!target[eventBusKey].nodeName) { + throw new Error('The eventBusKey "' + eventBusKey + '" does not refer to an element.'); + } + target.eventBusEl_ = target[eventBusKey]; + } else { + target.eventBusEl_ = createEl('span', { className: 'vjs-event-bus' }); + } + + assign(target, EventedMixin); + + // When any evented object is disposed, it removes all its listeners. + target.on('dispose', function () { + target.off(); + window_1.setTimeout(function () { + target.eventBusEl_ = null; + }, 0); + }); + + return target; + } + + /** + * @file mixins/stateful.js + * @module stateful + */ + + /** + * Contains methods that provide statefulness to an object which is passed + * to {@link module:stateful}. + * + * @mixin StatefulMixin + */ + var StatefulMixin = { + + /** + * A hash containing arbitrary keys and values representing the state of + * the object. + * + * @type {Object} + */ + state: {}, + + /** + * Set the state of an object by mutating its + * {@link module:stateful~StatefulMixin.state|state} object in place. + * + * @fires module:stateful~StatefulMixin#statechanged + * @param {Object|Function} stateUpdates + * A new set of properties to shallow-merge into the plugin state. + * Can be a plain object or a function returning a plain object. + * + * @returns {Object|undefined} + * An object containing changes that occurred. If no changes + * occurred, returns `undefined`. + */ + setState: function setState(stateUpdates) { + var _this = this; + + // Support providing the `stateUpdates` state as a function. + if (typeof stateUpdates === 'function') { + stateUpdates = stateUpdates(); + } + + var changes = void 0; + + each(stateUpdates, function (value, key) { + + // Record the change if the value is different from what's in the + // current state. + if (_this.state[key] !== value) { + changes = changes || {}; + changes[key] = { + from: _this.state[key], + to: value + }; + } + + _this.state[key] = value; + }); + + // Only trigger "statechange" if there were changes AND we have a trigger + // function. This allows us to not require that the target object be an + // evented object. + if (changes && isEvented(this)) { + + /** + * An event triggered on an object that is both + * {@link module:stateful|stateful} and {@link module:evented|evented} + * indicating that its state has changed. + * + * @event module:stateful~StatefulMixin#statechanged + * @type {Object} + * @property {Object} changes + * A hash containing the properties that were changed and + * the values they were changed `from` and `to`. + */ + this.trigger({ + changes: changes, + type: 'statechanged' + }); + } + + return changes; + } + }; + + /** + * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target + * object. + * + * If the target object is {@link module:evented|evented} and has a + * `handleStateChanged` method, that method will be automatically bound to the + * `statechanged` event on itself. + * + * @param {Object} target + * The object to be made stateful. + * + * @param {Object} [defaultState] + * A default set of properties to populate the newly-stateful object's + * `state` property. + * + * @returns {Object} + * Returns the `target`. + */ + function stateful(target, defaultState) { + assign(target, StatefulMixin); + + // This happens after the mixing-in because we need to replace the `state` + // added in that step. + target.state = assign({}, target.state, defaultState); + + // Auto-bind the `handleStateChanged` method of the target object if it exists. + if (typeof target.handleStateChanged === 'function' && isEvented(target)) { + target.on('statechanged', target.handleStateChanged); + } + + return target; + } + + /** + * @file to-title-case.js + * @module to-title-case + */ + + /** + * Uppercase the first letter of a string. + * + * @param {string} string + * String to be uppercased + * + * @return {string} + * The string with an uppercased first letter + */ + function toTitleCase(string) { + if (typeof string !== 'string') { + return string; + } + + return string.charAt(0).toUpperCase() + string.slice(1); + } + + /** + * Compares the TitleCase versions of the two strings for equality. + * + * @param {string} str1 + * The first string to compare + * + * @param {string} str2 + * The second string to compare + * + * @return {boolean} + * Whether the TitleCase versions of the strings are equal + */ + function titleCaseEquals(str1, str2) { + return toTitleCase(str1) === toTitleCase(str2); + } + + /** + * @file merge-options.js + * @module merge-options + */ + + /** + * Deep-merge one or more options objects, recursively merging **only** plain + * object properties. + * + * @param {Object[]} sources + * One or more objects to merge into a new object. + * + * @returns {Object} + * A new object that is the merged result of all sources. + */ + function mergeOptions() { + var result = {}; + + for (var _len = arguments.length, sources = Array(_len), _key = 0; _key < _len; _key++) { + sources[_key] = arguments[_key]; + } + + sources.forEach(function (source) { + if (!source) { + return; + } + + each(source, function (value, key) { + if (!isPlain(value)) { + result[key] = value; + return; + } + + if (!isPlain(result[key])) { + result[key] = {}; + } + + result[key] = mergeOptions(result[key], value); + }); + }); + + return result; + } + + /** + * Player Component - Base class for all UI objects + * + * @file component.js + */ + + /** + * Base class for all UI Components. + * Components are UI objects which represent both a javascript object and an element + * in the DOM. They can be children of other components, and can have + * children themselves. + * + * Components can also use methods from {@link EventTarget} + */ + + var Component = function () { + + /** + * A callback that is called when a component is ready. Does not have any + * paramters and any callback value will be ignored. + * + * @callback Component~ReadyCallback + * @this Component + */ + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Object[]} [options.children] + * An array of children objects to intialize this component with. Children objects have + * a name property that will be used if more than one component of the same type needs to be + * added. + * + * @param {Component~ReadyCallback} [ready] + * Function that gets called when the `Component` is ready. + */ + function Component(player, options, ready) { + classCallCheck(this, Component); + + + // The component might be the player itself and we can't pass `this` to super + if (!player && this.play) { + this.player_ = player = this; // eslint-disable-line + } else { + this.player_ = player; + } + + // Make a copy of prototype.options_ to protect against overriding defaults + this.options_ = mergeOptions({}, this.options_); + + // Updated options with supplied options + options = this.options_ = mergeOptions(this.options_, options); + + // Get ID from options or options element if one is supplied + this.id_ = options.id || options.el && options.el.id; + + // If there was no ID from the options, generate one + if (!this.id_) { + // Don't require the player ID function in the case of mock players + var id = player && player.id && player.id() || 'no_player'; + + this.id_ = id + '_component_' + newGUID(); + } + + this.name_ = options.name || null; + + // Create element if one wasn't provided in options + if (options.el) { + this.el_ = options.el; + } else if (options.createEl !== false) { + this.el_ = this.createEl(); + } + + // if evented is anything except false, we want to mixin in evented + if (options.evented !== false) { + // Make this an evented object and use `el_`, if available, as its event bus + evented(this, { eventBusKey: this.el_ ? 'el_' : null }); + } + stateful(this, this.constructor.defaultState); + + this.children_ = []; + this.childIndex_ = {}; + this.childNameIndex_ = {}; + + // Add any child components in options + if (options.initChildren !== false) { + this.initChildren(); + } + + this.ready(ready); + // Don't want to trigger ready here or it will before init is actually + // finished for all children that run this constructor + + if (options.reportTouchActivity !== false) { + this.enableTouchActivity(); + } + } + + /** + * Dispose of the `Component` and all child components. + * + * @fires Component#dispose + */ + + + Component.prototype.dispose = function dispose() { + + /** + * Triggered when a `Component` is disposed. + * + * @event Component#dispose + * @type {EventTarget~Event} + * + * @property {boolean} [bubbles=false] + * set to false so that the close event does not + * bubble up + */ + this.trigger({ type: 'dispose', bubbles: false }); + + // Dispose all children. + if (this.children_) { + for (var i = this.children_.length - 1; i >= 0; i--) { + if (this.children_[i].dispose) { + this.children_[i].dispose(); + } + } + } + + // Delete child references + this.children_ = null; + this.childIndex_ = null; + this.childNameIndex_ = null; + + if (this.el_) { + // Remove element from DOM + if (this.el_.parentNode) { + this.el_.parentNode.removeChild(this.el_); + } + + removeData(this.el_); + this.el_ = null; + } + + // remove reference to the player after disposing of the element + this.player_ = null; + }; + + /** + * Return the {@link Player} that the `Component` has attached to. + * + * @return {Player} + * The player that this `Component` has attached to. + */ + + + Component.prototype.player = function player() { + return this.player_; + }; + + /** + * Deep merge of options objects with new options. + * > Note: When both `obj` and `options` contain properties whose values are objects. + * The two properties get merged using {@link module:mergeOptions} + * + * @param {Object} obj + * The object that contains new options. + * + * @return {Object} + * A new object of `this.options_` and `obj` merged together. + * + * @deprecated since version 5 + */ + + + Component.prototype.options = function options(obj) { + log$1.warn('this.options() has been deprecated and will be moved to the constructor in 6.0'); + + if (!obj) { + return this.options_; + } + + this.options_ = mergeOptions(this.options_, obj); + return this.options_; + }; + + /** + * Get the `Component`s DOM element + * + * @return {Element} + * The DOM element for this `Component`. + */ + + + Component.prototype.el = function el() { + return this.el_; + }; + + /** + * Create the `Component`s DOM element. + * + * @param {string} [tagName] + * Element's DOM node type. e.g. 'div' + * + * @param {Object} [properties] + * An object of properties that should be set. + * + * @param {Object} [attributes] + * An object of attributes that should be set. + * + * @return {Element} + * The element that gets created. + */ + + + Component.prototype.createEl = function createEl$$1(tagName, properties, attributes) { + return createEl(tagName, properties, attributes); + }; + + /** + * Localize a string given the string in english. + * + * If tokens are provided, it'll try and run a simple token replacement on the provided string. + * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array. + * + * If a `defaultValue` is provided, it'll use that over `string`, + * if a value isn't found in provided language files. + * This is useful if you want to have a descriptive key for token replacement + * but have a succinct localized string and not require `en.json` to be included. + * + * Currently, it is used for the progress bar timing. + * ```js + * { + * "progress bar timing: currentTime={1} duration={2}": "{1} of {2}" + * } + * ``` + * It is then used like so: + * ```js + * this.localize('progress bar timing: currentTime={1} duration{2}', + * [this.player_.currentTime(), this.player_.duration()], + * '{1} of {2}'); + * ``` + * + * Which outputs something like: `01:23 of 24:56`. + * + * + * @param {string} string + * The string to localize and the key to lookup in the language files. + * @param {string[]} [tokens] + * If the current item has token replacements, provide the tokens here. + * @param {string} [defaultValue] + * Defaults to `string`. Can be a default value to use for token replacement + * if the lookup key is needed to be separate. + * + * @return {string} + * The localized string or if no localization exists the english string. + */ + + + Component.prototype.localize = function localize(string, tokens) { + var defaultValue = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : string; + + var code = this.player_.language && this.player_.language(); + var languages = this.player_.languages && this.player_.languages(); + var language = languages && languages[code]; + var primaryCode = code && code.split('-')[0]; + var primaryLang = languages && languages[primaryCode]; + + var localizedString = defaultValue; + + if (language && language[string]) { + localizedString = language[string]; + } else if (primaryLang && primaryLang[string]) { + localizedString = primaryLang[string]; + } + + if (tokens) { + localizedString = localizedString.replace(/\{(\d+)\}/g, function (match, index) { + var value = tokens[index - 1]; + var ret = value; + + if (typeof value === 'undefined') { + ret = match; + } + + return ret; + }); + } + + return localizedString; + }; + + /** + * Return the `Component`s DOM element. This is where children get inserted. + * This will usually be the the same as the element returned in {@link Component#el}. + * + * @return {Element} + * The content element for this `Component`. + */ + + + Component.prototype.contentEl = function contentEl() { + return this.contentEl_ || this.el_; + }; + + /** + * Get this `Component`s ID + * + * @return {string} + * The id of this `Component` + */ + + + Component.prototype.id = function id() { + return this.id_; + }; + + /** + * Get the `Component`s name. The name gets used to reference the `Component` + * and is set during registration. + * + * @return {string} + * The name of this `Component`. + */ + + + Component.prototype.name = function name() { + return this.name_; + }; + + /** + * Get an array of all child components + * + * @return {Array} + * The children + */ + + + Component.prototype.children = function children() { + return this.children_; + }; + + /** + * Returns the child `Component` with the given `id`. + * + * @param {string} id + * The id of the child `Component` to get. + * + * @return {Component|undefined} + * The child `Component` with the given `id` or undefined. + */ + + + Component.prototype.getChildById = function getChildById(id) { + return this.childIndex_[id]; + }; + + /** + * Returns the child `Component` with the given `name`. + * + * @param {string} name + * The name of the child `Component` to get. + * + * @return {Component|undefined} + * The child `Component` with the given `name` or undefined. + */ + + + Component.prototype.getChild = function getChild(name) { + if (!name) { + return; + } + + name = toTitleCase(name); + + return this.childNameIndex_[name]; + }; + + /** + * Add a child `Component` inside the current `Component`. + * + * + * @param {string|Component} child + * The name or instance of a child to add. + * + * @param {Object} [options={}] + * The key/value store of options that will get passed to children of + * the child. + * + * @param {number} [index=this.children_.length] + * The index to attempt to add a child into. + * + * @return {Component} + * The `Component` that gets added as a child. When using a string the + * `Component` will get created by this process. + */ + + + Component.prototype.addChild = function addChild(child) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var index = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : this.children_.length; + + var component = void 0; + var componentName = void 0; + + // If child is a string, create component with options + if (typeof child === 'string') { + componentName = toTitleCase(child); + + var componentClassName = options.componentClass || componentName; + + // Set name through options + options.name = componentName; + + // Create a new object & element for this controls set + // If there's no .player_, this is a player + var ComponentClass = Component.getComponent(componentClassName); + + if (!ComponentClass) { + throw new Error('Component ' + componentClassName + ' does not exist'); + } + + // data stored directly on the videojs object may be + // misidentified as a component to retain + // backwards-compatibility with 4.x. check to make sure the + // component class can be instantiated. + if (typeof ComponentClass !== 'function') { + return null; + } + + component = new ComponentClass(this.player_ || this, options); + + // child is a component instance + } else { + component = child; + } + + this.children_.splice(index, 0, component); + + if (typeof component.id === 'function') { + this.childIndex_[component.id()] = component; + } + + // If a name wasn't used to create the component, check if we can use the + // name function of the component + componentName = componentName || component.name && toTitleCase(component.name()); + + if (componentName) { + this.childNameIndex_[componentName] = component; + } + + // Add the UI object's element to the container div (box) + // Having an element is not required + if (typeof component.el === 'function' && component.el()) { + var childNodes = this.contentEl().children; + var refNode = childNodes[index] || null; + + this.contentEl().insertBefore(component.el(), refNode); + } + + // Return so it can stored on parent object if desired. + return component; + }; + + /** + * Remove a child `Component` from this `Component`s list of children. Also removes + * the child `Component`s element from this `Component`s element. + * + * @param {Component} component + * The child `Component` to remove. + */ + + + Component.prototype.removeChild = function removeChild(component) { + if (typeof component === 'string') { + component = this.getChild(component); + } + + if (!component || !this.children_) { + return; + } + + var childFound = false; + + for (var i = this.children_.length - 1; i >= 0; i--) { + if (this.children_[i] === component) { + childFound = true; + this.children_.splice(i, 1); + break; + } + } + + if (!childFound) { + return; + } + + this.childIndex_[component.id()] = null; + this.childNameIndex_[component.name()] = null; + + var compEl = component.el(); + + if (compEl && compEl.parentNode === this.contentEl()) { + this.contentEl().removeChild(component.el()); + } + }; + + /** + * Add and initialize default child `Component`s based upon options. + */ + + + Component.prototype.initChildren = function initChildren() { + var _this = this; + + var children = this.options_.children; + + if (children) { + // `this` is `parent` + var parentOptions = this.options_; + + var handleAdd = function handleAdd(child) { + var name = child.name; + var opts = child.opts; + + // Allow options for children to be set at the parent options + // e.g. videojs(id, { controlBar: false }); + // instead of videojs(id, { children: { controlBar: false }); + if (parentOptions[name] !== undefined) { + opts = parentOptions[name]; + } + + // Allow for disabling default components + // e.g. options['children']['posterImage'] = false + if (opts === false) { + return; + } + + // Allow options to be passed as a simple boolean if no configuration + // is necessary. + if (opts === true) { + opts = {}; + } + + // We also want to pass the original player options + // to each component as well so they don't need to + // reach back into the player for options later. + opts.playerOptions = _this.options_.playerOptions; + + // Create and add the child component. + // Add a direct reference to the child by name on the parent instance. + // If two of the same component are used, different names should be supplied + // for each + var newChild = _this.addChild(name, opts); + + if (newChild) { + _this[name] = newChild; + } + }; + + // Allow for an array of children details to passed in the options + var workingChildren = void 0; + var Tech = Component.getComponent('Tech'); + + if (Array.isArray(children)) { + workingChildren = children; + } else { + workingChildren = Object.keys(children); + } + + workingChildren + // children that are in this.options_ but also in workingChildren would + // give us extra children we do not want. So, we want to filter them out. + .concat(Object.keys(this.options_).filter(function (child) { + return !workingChildren.some(function (wchild) { + if (typeof wchild === 'string') { + return child === wchild; + } + return child === wchild.name; + }); + })).map(function (child) { + var name = void 0; + var opts = void 0; + + if (typeof child === 'string') { + name = child; + opts = children[name] || _this.options_[name] || {}; + } else { + name = child.name; + opts = child; + } + + return { name: name, opts: opts }; + }).filter(function (child) { + // we have to make sure that child.name isn't in the techOrder since + // techs are registerd as Components but can't aren't compatible + // See https://github.com/videojs/video.js/issues/2772 + var c = Component.getComponent(child.opts.componentClass || toTitleCase(child.name)); + + return c && !Tech.isTech(c); + }).forEach(handleAdd); + } + }; + + /** + * Builds the default DOM class name. Should be overriden by sub-components. + * + * @return {string} + * The DOM class name for this object. + * + * @abstract + */ + + + Component.prototype.buildCSSClass = function buildCSSClass() { + // Child classes can include a function that does: + // return 'CLASS NAME' + this._super(); + return ''; + }; + + /** + * Bind a listener to the component's ready state. + * Different from event listeners in that if the ready event has already happened + * it will trigger the function immediately. + * + * @return {Component} + * Returns itself; method can be chained. + */ + + + Component.prototype.ready = function ready(fn) { + var sync = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false; + + if (!fn) { + return; + } + + if (!this.isReady_) { + this.readyQueue_ = this.readyQueue_ || []; + this.readyQueue_.push(fn); + return; + } + + if (sync) { + fn.call(this); + } else { + // Call the function asynchronously by default for consistency + this.setTimeout(fn, 1); + } + }; + + /** + * Trigger all the ready listeners for this `Component`. + * + * @fires Component#ready + */ + + + Component.prototype.triggerReady = function triggerReady() { + this.isReady_ = true; + + // Ensure ready is triggered asynchronously + this.setTimeout(function () { + var readyQueue = this.readyQueue_; + + // Reset Ready Queue + this.readyQueue_ = []; + + if (readyQueue && readyQueue.length > 0) { + readyQueue.forEach(function (fn) { + fn.call(this); + }, this); + } + + // Allow for using event listeners also + /** + * Triggered when a `Component` is ready. + * + * @event Component#ready + * @type {EventTarget~Event} + */ + this.trigger('ready'); + }, 1); + }; + + /** + * Find a single DOM element matching a `selector`. This can be within the `Component`s + * `contentEl()` or another custom context. + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelector`. + * + * @param {Element|string} [context=this.contentEl()] + * A DOM element within which to query. Can also be a selector string in + * which case the first matching element will get used as context. If + * missing `this.contentEl()` gets used. If `this.contentEl()` returns + * nothing it falls back to `document`. + * + * @return {Element|null} + * the dom element that was found, or null + * + * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors) + */ + + + Component.prototype.$ = function $$$1(selector, context) { + return $(selector, context || this.contentEl()); + }; + + /** + * Finds all DOM element matching a `selector`. This can be within the `Component`s + * `contentEl()` or another custom context. + * + * @param {string} selector + * A valid CSS selector, which will be passed to `querySelectorAll`. + * + * @param {Element|string} [context=this.contentEl()] + * A DOM element within which to query. Can also be a selector string in + * which case the first matching element will get used as context. If + * missing `this.contentEl()` gets used. If `this.contentEl()` returns + * nothing it falls back to `document`. + * + * @return {NodeList} + * a list of dom elements that were found + * + * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors) + */ + + + Component.prototype.$$ = function $$$$1(selector, context) { + return $$(selector, context || this.contentEl()); + }; + + /** + * Check if a component's element has a CSS class name. + * + * @param {string} classToCheck + * CSS class name to check. + * + * @return {boolean} + * - True if the `Component` has the class. + * - False if the `Component` does not have the class` + */ + + + Component.prototype.hasClass = function hasClass$$1(classToCheck) { + return hasClass(this.el_, classToCheck); + }; + + /** + * Add a CSS class name to the `Component`s element. + * + * @param {string} classToAdd + * CSS class name to add + */ + + + Component.prototype.addClass = function addClass$$1(classToAdd) { + addClass(this.el_, classToAdd); + }; + + /** + * Remove a CSS class name from the `Component`s element. + * + * @param {string} classToRemove + * CSS class name to remove + */ + + + Component.prototype.removeClass = function removeClass$$1(classToRemove) { + removeClass(this.el_, classToRemove); + }; + + /** + * Add or remove a CSS class name from the component's element. + * - `classToToggle` gets added when {@link Component#hasClass} would return false. + * - `classToToggle` gets removed when {@link Component#hasClass} would return true. + * + * @param {string} classToToggle + * The class to add or remove based on (@link Component#hasClass} + * + * @param {boolean|Dom~predicate} [predicate] + * An {@link Dom~predicate} function or a boolean + */ + + + Component.prototype.toggleClass = function toggleClass$$1(classToToggle, predicate) { + toggleClass(this.el_, classToToggle, predicate); + }; + + /** + * Show the `Component`s element if it is hidden by removing the + * 'vjs-hidden' class name from it. + */ + + + Component.prototype.show = function show() { + this.removeClass('vjs-hidden'); + }; + + /** + * Hide the `Component`s element if it is currently showing by adding the + * 'vjs-hidden` class name to it. + */ + + + Component.prototype.hide = function hide() { + this.addClass('vjs-hidden'); + }; + + /** + * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing' + * class name to it. Used during fadeIn/fadeOut. + * + * @private + */ + + + Component.prototype.lockShowing = function lockShowing() { + this.addClass('vjs-lock-showing'); + }; + + /** + * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing' + * class name from it. Used during fadeIn/fadeOut. + * + * @private + */ + + + Component.prototype.unlockShowing = function unlockShowing() { + this.removeClass('vjs-lock-showing'); + }; + + /** + * Get the value of an attribute on the `Component`s element. + * + * @param {string} attribute + * Name of the attribute to get the value from. + * + * @return {string|null} + * - The value of the attribute that was asked for. + * - Can be an empty string on some browsers if the attribute does not exist + * or has no value + * - Most browsers will return null if the attibute does not exist or has + * no value. + * + * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute} + */ + + + Component.prototype.getAttribute = function getAttribute$$1(attribute) { + return getAttribute(this.el_, attribute); + }; + + /** + * Set the value of an attribute on the `Component`'s element + * + * @param {string} attribute + * Name of the attribute to set. + * + * @param {string} value + * Value to set the attribute to. + * + * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute} + */ + + + Component.prototype.setAttribute = function setAttribute$$1(attribute, value) { + setAttribute(this.el_, attribute, value); + }; + + /** + * Remove an attribute from the `Component`s element. + * + * @param {string} attribute + * Name of the attribute to remove. + * + * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute} + */ + + + Component.prototype.removeAttribute = function removeAttribute$$1(attribute) { + removeAttribute(this.el_, attribute); + }; + + /** + * Get or set the width of the component based upon the CSS styles. + * See {@link Component#dimension} for more detailed information. + * + * @param {number|string} [num] + * The width that you want to set postfixed with '%', 'px' or nothing. + * + * @param {boolean} [skipListeners] + * Skip the componentresize event trigger + * + * @return {number|string} + * The width when getting, zero if there is no width. Can be a string + * postpixed with '%' or 'px'. + */ + + + Component.prototype.width = function width(num, skipListeners) { + return this.dimension('width', num, skipListeners); + }; + + /** + * Get or set the height of the component based upon the CSS styles. + * See {@link Component#dimension} for more detailed information. + * + * @param {number|string} [num] + * The height that you want to set postfixed with '%', 'px' or nothing. + * + * @param {boolean} [skipListeners] + * Skip the componentresize event trigger + * + * @return {number|string} + * The width when getting, zero if there is no width. Can be a string + * postpixed with '%' or 'px'. + */ + + + Component.prototype.height = function height(num, skipListeners) { + return this.dimension('height', num, skipListeners); + }; + + /** + * Set both the width and height of the `Component` element at the same time. + * + * @param {number|string} width + * Width to set the `Component`s element to. + * + * @param {number|string} height + * Height to set the `Component`s element to. + */ + + + Component.prototype.dimensions = function dimensions(width, height) { + // Skip componentresize listeners on width for optimization + this.width(width, true); + this.height(height); + }; + + /** + * Get or set width or height of the `Component` element. This is the shared code + * for the {@link Component#width} and {@link Component#height}. + * + * Things to know: + * - If the width or height in an number this will return the number postfixed with 'px'. + * - If the width/height is a percent this will return the percent postfixed with '%' + * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function + * defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`. + * See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/} + * for more information + * - If you want the computed style of the component, use {@link Component#currentWidth} + * and {@link {Component#currentHeight} + * + * @fires Component#componentresize + * + * @param {string} widthOrHeight + 8 'width' or 'height' + * + * @param {number|string} [num] + 8 New dimension + * + * @param {boolean} [skipListeners] + * Skip componentresize event trigger + * + * @return {number} + * The dimension when getting or 0 if unset + */ + + + Component.prototype.dimension = function dimension(widthOrHeight, num, skipListeners) { + if (num !== undefined) { + // Set to zero if null or literally NaN (NaN !== NaN) + if (num === null || num !== num) { + num = 0; + } + + // Check if using css width/height (% or px) and adjust + if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) { + this.el_.style[widthOrHeight] = num; + } else if (num === 'auto') { + this.el_.style[widthOrHeight] = ''; + } else { + this.el_.style[widthOrHeight] = num + 'px'; + } + + // skipListeners allows us to avoid triggering the resize event when setting both width and height + if (!skipListeners) { + /** + * Triggered when a component is resized. + * + * @event Component#componentresize + * @type {EventTarget~Event} + */ + this.trigger('componentresize'); + } + + return; + } + + // Not setting a value, so getting it + // Make sure element exists + if (!this.el_) { + return 0; + } + + // Get dimension value from style + var val = this.el_.style[widthOrHeight]; + var pxIndex = val.indexOf('px'); + + if (pxIndex !== -1) { + // Return the pixel value with no 'px' + return parseInt(val.slice(0, pxIndex), 10); + } + + // No px so using % or no style was set, so falling back to offsetWidth/height + // If component has display:none, offset will return 0 + // TODO: handle display:none and no dimension style using px + return parseInt(this.el_['offset' + toTitleCase(widthOrHeight)], 10); + }; + + /** + * Get the width or the height of the `Component` elements computed style. Uses + * `window.getComputedStyle`. + * + * @param {string} widthOrHeight + * A string containing 'width' or 'height'. Whichever one you want to get. + * + * @return {number} + * The dimension that gets asked for or 0 if nothing was set + * for that dimension. + */ + + + Component.prototype.currentDimension = function currentDimension(widthOrHeight) { + var computedWidthOrHeight = 0; + + if (widthOrHeight !== 'width' && widthOrHeight !== 'height') { + throw new Error('currentDimension only accepts width or height value'); + } + + if (typeof window_1.getComputedStyle === 'function') { + var computedStyle = window_1.getComputedStyle(this.el_); + + computedWidthOrHeight = computedStyle.getPropertyValue(widthOrHeight) || computedStyle[widthOrHeight]; + } + + // remove 'px' from variable and parse as integer + computedWidthOrHeight = parseFloat(computedWidthOrHeight); + + // if the computed value is still 0, it's possible that the browser is lying + // and we want to check the offset values. + // This code also runs wherever getComputedStyle doesn't exist. + if (computedWidthOrHeight === 0) { + var rule = 'offset' + toTitleCase(widthOrHeight); + + computedWidthOrHeight = this.el_[rule]; + } + + return computedWidthOrHeight; + }; + + /** + * An object that contains width and height values of the `Component`s + * computed style. Uses `window.getComputedStyle`. + * + * @typedef {Object} Component~DimensionObject + * + * @property {number} width + * The width of the `Component`s computed style. + * + * @property {number} height + * The height of the `Component`s computed style. + */ + + /** + * Get an object that contains width and height values of the `Component`s + * computed style. + * + * @return {Component~DimensionObject} + * The dimensions of the components element + */ + + + Component.prototype.currentDimensions = function currentDimensions() { + return { + width: this.currentDimension('width'), + height: this.currentDimension('height') + }; + }; + + /** + * Get the width of the `Component`s computed style. Uses `window.getComputedStyle`. + * + * @return {number} width + * The width of the `Component`s computed style. + */ + + + Component.prototype.currentWidth = function currentWidth() { + return this.currentDimension('width'); + }; + + /** + * Get the height of the `Component`s computed style. Uses `window.getComputedStyle`. + * + * @return {number} height + * The height of the `Component`s computed style. + */ + + + Component.prototype.currentHeight = function currentHeight() { + return this.currentDimension('height'); + }; + + /** + * Set the focus to this component + */ + + + Component.prototype.focus = function focus() { + this.el_.focus(); + }; + + /** + * Remove the focus from this component + */ + + + Component.prototype.blur = function blur() { + this.el_.blur(); + }; + + /** + * Emit a 'tap' events when touch event support gets detected. This gets used to + * support toggling the controls through a tap on the video. They get enabled + * because every sub-component would have extra overhead otherwise. + * + * @private + * @fires Component#tap + * @listens Component#touchstart + * @listens Component#touchmove + * @listens Component#touchleave + * @listens Component#touchcancel + * @listens Component#touchend + */ + + + Component.prototype.emitTapEvents = function emitTapEvents() { + // Track the start time so we can determine how long the touch lasted + var touchStart = 0; + var firstTouch = null; + + // Maximum movement allowed during a touch event to still be considered a tap + // Other popular libs use anywhere from 2 (hammer.js) to 15, + // so 10 seems like a nice, round number. + var tapMovementThreshold = 10; + + // The maximum length a touch can be while still being considered a tap + var touchTimeThreshold = 200; + + var couldBeTap = void 0; + + this.on('touchstart', function (event) { + // If more than one finger, don't consider treating this as a click + if (event.touches.length === 1) { + // Copy pageX/pageY from the object + firstTouch = { + pageX: event.touches[0].pageX, + pageY: event.touches[0].pageY + }; + // Record start time so we can detect a tap vs. "touch and hold" + touchStart = new Date().getTime(); + // Reset couldBeTap tracking + couldBeTap = true; + } + }); + + this.on('touchmove', function (event) { + // If more than one finger, don't consider treating this as a click + if (event.touches.length > 1) { + couldBeTap = false; + } else if (firstTouch) { + // Some devices will throw touchmoves for all but the slightest of taps. + // So, if we moved only a small distance, this could still be a tap + var xdiff = event.touches[0].pageX - firstTouch.pageX; + var ydiff = event.touches[0].pageY - firstTouch.pageY; + var touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff); + + if (touchDistance > tapMovementThreshold) { + couldBeTap = false; + } + } + }); + + var noTap = function noTap() { + couldBeTap = false; + }; + + // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s + this.on('touchleave', noTap); + this.on('touchcancel', noTap); + + // When the touch ends, measure how long it took and trigger the appropriate + // event + this.on('touchend', function (event) { + firstTouch = null; + // Proceed only if the touchmove/leave/cancel event didn't happen + if (couldBeTap === true) { + // Measure how long the touch lasted + var touchTime = new Date().getTime() - touchStart; + + // Make sure the touch was less than the threshold to be considered a tap + if (touchTime < touchTimeThreshold) { + // Don't let browser turn this into a click + event.preventDefault(); + /** + * Triggered when a `Component` is tapped. + * + * @event Component#tap + * @type {EventTarget~Event} + */ + this.trigger('tap'); + // It may be good to copy the touchend event object and change the + // type to tap, if the other event properties aren't exact after + // Events.fixEvent runs (e.g. event.target) + } + } + }); + }; + + /** + * This function reports user activity whenever touch events happen. This can get + * turned off by any sub-components that wants touch events to act another way. + * + * Report user touch activity when touch events occur. User activity gets used to + * determine when controls should show/hide. It is simple when it comes to mouse + * events, because any mouse event should show the controls. So we capture mouse + * events that bubble up to the player and report activity when that happens. + * With touch events it isn't as easy as `touchstart` and `touchend` toggle player + * controls. So touch events can't help us at the player level either. + * + * User activity gets checked asynchronously. So what could happen is a tap event + * on the video turns the controls off. Then the `touchend` event bubbles up to + * the player. Which, if it reported user activity, would turn the controls right + * back on. We also don't want to completely block touch events from bubbling up. + * Furthermore a `touchmove` event and anything other than a tap, should not turn + * controls back on. + * + * @listens Component#touchstart + * @listens Component#touchmove + * @listens Component#touchend + * @listens Component#touchcancel + */ + + + Component.prototype.enableTouchActivity = function enableTouchActivity() { + // Don't continue if the root player doesn't support reporting user activity + if (!this.player() || !this.player().reportUserActivity) { + return; + } + + // listener for reporting that the user is active + var report = bind(this.player(), this.player().reportUserActivity); + + var touchHolding = void 0; + + this.on('touchstart', function () { + report(); + // For as long as the they are touching the device or have their mouse down, + // we consider them active even if they're not moving their finger or mouse. + // So we want to continue to update that they are active + this.clearInterval(touchHolding); + // report at the same interval as activityCheck + touchHolding = this.setInterval(report, 250); + }); + + var touchEnd = function touchEnd(event) { + report(); + // stop the interval that maintains activity if the touch is holding + this.clearInterval(touchHolding); + }; + + this.on('touchmove', report); + this.on('touchend', touchEnd); + this.on('touchcancel', touchEnd); + }; + + /** + * A callback that has no parameters and is bound into `Component`s context. + * + * @callback Component~GenericCallback + * @this Component + */ + + /** + * Creates a function that runs after an `x` millisecond timeout. This function is a + * wrapper around `window.setTimeout`. There are a few reasons to use this one + * instead though: + * 1. It gets cleared via {@link Component#clearTimeout} when + * {@link Component#dispose} gets called. + * 2. The function callback will gets turned into a {@link Component~GenericCallback} + * + * > Note: You can't use `window.clearTimeout` on the id returned by this function. This + * will cause its dispose listener not to get cleaned up! Please use + * {@link Component#clearTimeout} or {@link Component#dispose} instead. + * + * @param {Component~GenericCallback} fn + * The function that will be run after `timeout`. + * + * @param {number} timeout + * Timeout in milliseconds to delay before executing the specified function. + * + * @return {number} + * Returns a timeout ID that gets used to identify the timeout. It can also + * get used in {@link Component#clearTimeout} to clear the timeout that + * was set. + * + * @listens Component#dispose + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout} + */ + + + Component.prototype.setTimeout = function setTimeout(fn, timeout) { + var _this2 = this; + + // declare as variables so they are properly available in timeout function + // eslint-disable-next-line + var timeoutId, disposeFn; + + fn = bind(this, fn); + + timeoutId = window_1.setTimeout(function () { + _this2.off('dispose', disposeFn); + fn(); + }, timeout); + + disposeFn = function disposeFn() { + return _this2.clearTimeout(timeoutId); + }; + + disposeFn.guid = 'vjs-timeout-' + timeoutId; + + this.on('dispose', disposeFn); + + return timeoutId; + }; + + /** + * Clears a timeout that gets created via `window.setTimeout` or + * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout} + * use this function instead of `window.clearTimout`. If you don't your dispose + * listener will not get cleaned up until {@link Component#dispose}! + * + * @param {number} timeoutId + * The id of the timeout to clear. The return value of + * {@link Component#setTimeout} or `window.setTimeout`. + * + * @return {number} + * Returns the timeout id that was cleared. + * + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout} + */ + + + Component.prototype.clearTimeout = function clearTimeout(timeoutId) { + window_1.clearTimeout(timeoutId); + + var disposeFn = function disposeFn() {}; + + disposeFn.guid = 'vjs-timeout-' + timeoutId; + + this.off('dispose', disposeFn); + + return timeoutId; + }; + + /** + * Creates a function that gets run every `x` milliseconds. This function is a wrapper + * around `window.setInterval`. There are a few reasons to use this one instead though. + * 1. It gets cleared via {@link Component#clearInterval} when + * {@link Component#dispose} gets called. + * 2. The function callback will be a {@link Component~GenericCallback} + * + * @param {Component~GenericCallback} fn + * The function to run every `x` seconds. + * + * @param {number} interval + * Execute the specified function every `x` milliseconds. + * + * @return {number} + * Returns an id that can be used to identify the interval. It can also be be used in + * {@link Component#clearInterval} to clear the interval. + * + * @listens Component#dispose + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval} + */ + + + Component.prototype.setInterval = function setInterval(fn, interval) { + var _this3 = this; + + fn = bind(this, fn); + + var intervalId = window_1.setInterval(fn, interval); + + var disposeFn = function disposeFn() { + return _this3.clearInterval(intervalId); + }; + + disposeFn.guid = 'vjs-interval-' + intervalId; + + this.on('dispose', disposeFn); + + return intervalId; + }; + + /** + * Clears an interval that gets created via `window.setInterval` or + * {@link Component#setInterval}. If you set an inteval via {@link Component#setInterval} + * use this function instead of `window.clearInterval`. If you don't your dispose + * listener will not get cleaned up until {@link Component#dispose}! + * + * @param {number} intervalId + * The id of the interval to clear. The return value of + * {@link Component#setInterval} or `window.setInterval`. + * + * @return {number} + * Returns the interval id that was cleared. + * + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval} + */ + + + Component.prototype.clearInterval = function clearInterval(intervalId) { + window_1.clearInterval(intervalId); + + var disposeFn = function disposeFn() {}; + + disposeFn.guid = 'vjs-interval-' + intervalId; + + this.off('dispose', disposeFn); + + return intervalId; + }; + + /** + * Queues up a callback to be passed to requestAnimationFrame (rAF), but + * with a few extra bonuses: + * + * - Supports browsers that do not support rAF by falling back to + * {@link Component#setTimeout}. + * + * - The callback is turned into a {@link Component~GenericCallback} (i.e. + * bound to the component). + * + * - Automatic cancellation of the rAF callback is handled if the component + * is disposed before it is called. + * + * @param {Component~GenericCallback} fn + * A function that will be bound to this component and executed just + * before the browser's next repaint. + * + * @return {number} + * Returns an rAF ID that gets used to identify the timeout. It can + * also be used in {@link Component#cancelAnimationFrame} to cancel + * the animation frame callback. + * + * @listens Component#dispose + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame} + */ + + + Component.prototype.requestAnimationFrame = function requestAnimationFrame(fn) { + var _this4 = this; + + // declare as variables so they are properly available in rAF function + // eslint-disable-next-line + var id, disposeFn; + + if (this.supportsRaf_) { + fn = bind(this, fn); + + id = window_1.requestAnimationFrame(function () { + _this4.off('dispose', disposeFn); + fn(); + }); + + disposeFn = function disposeFn() { + return _this4.cancelAnimationFrame(id); + }; + + disposeFn.guid = 'vjs-raf-' + id; + this.on('dispose', disposeFn); + + return id; + } + + // Fall back to using a timer. + return this.setTimeout(fn, 1000 / 60); + }; + + /** + * Cancels a queued callback passed to {@link Component#requestAnimationFrame} + * (rAF). + * + * If you queue an rAF callback via {@link Component#requestAnimationFrame}, + * use this function instead of `window.cancelAnimationFrame`. If you don't, + * your dispose listener will not get cleaned up until {@link Component#dispose}! + * + * @param {number} id + * The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}. + * + * @return {number} + * Returns the rAF ID that was cleared. + * + * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame} + */ + + + Component.prototype.cancelAnimationFrame = function cancelAnimationFrame(id) { + if (this.supportsRaf_) { + window_1.cancelAnimationFrame(id); + + var disposeFn = function disposeFn() {}; + + disposeFn.guid = 'vjs-raf-' + id; + + this.off('dispose', disposeFn); + + return id; + } + + // Fall back to using a timer. + return this.clearTimeout(id); + }; + + /** + * Register a `Component` with `videojs` given the name and the component. + * + * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s + * should be registered using {@link Tech.registerTech} or + * {@link videojs:videojs.registerTech}. + * + * > NOTE: This function can also be seen on videojs as + * {@link videojs:videojs.registerComponent}. + * + * @param {string} name + * The name of the `Component` to register. + * + * @param {Component} ComponentToRegister + * The `Component` class to register. + * + * @return {Component} + * The `Component` that was registered. + */ + + + Component.registerComponent = function registerComponent(name, ComponentToRegister) { + if (typeof name !== 'string' || !name) { + throw new Error('Illegal component name, "' + name + '"; must be a non-empty string.'); + } + + var Tech = Component.getComponent('Tech'); + + // We need to make sure this check is only done if Tech has been registered. + var isTech = Tech && Tech.isTech(ComponentToRegister); + var isComp = Component === ComponentToRegister || Component.prototype.isPrototypeOf(ComponentToRegister.prototype); + + if (isTech || !isComp) { + var reason = void 0; + + if (isTech) { + reason = 'techs must be registered using Tech.registerTech()'; + } else { + reason = 'must be a Component subclass'; + } + + throw new Error('Illegal component, "' + name + '"; ' + reason + '.'); + } + + name = toTitleCase(name); + + if (!Component.components_) { + Component.components_ = {}; + } + + var Player = Component.getComponent('Player'); + + if (name === 'Player' && Player && Player.players) { + var players = Player.players; + var playerNames = Object.keys(players); + + // If we have players that were disposed, then their name will still be + // in Players.players. So, we must loop through and verify that the value + // for each item is not null. This allows registration of the Player component + // after all players have been disposed or before any were created. + if (players && playerNames.length > 0 && playerNames.map(function (pname) { + return players[pname]; + }).every(Boolean)) { + throw new Error('Can not register Player component after player has been created.'); + } + } + + Component.components_[name] = ComponentToRegister; + + return ComponentToRegister; + }; + + /** + * Get a `Component` based on the name it was registered with. + * + * @param {string} name + * The Name of the component to get. + * + * @return {Component} + * The `Component` that got registered under the given name. + * + * @deprecated In `videojs` 6 this will not return `Component`s that were not + * registered using {@link Component.registerComponent}. Currently we + * check the global `videojs` object for a `Component` name and + * return that if it exists. + */ + + + Component.getComponent = function getComponent(name) { + if (!name) { + return; + } + + name = toTitleCase(name); + + if (Component.components_ && Component.components_[name]) { + return Component.components_[name]; + } + }; + + return Component; + }(); + + /** + * Whether or not this component supports `requestAnimationFrame`. + * + * This is exposed primarily for testing purposes. + * + * @private + * @type {Boolean} + */ + + + Component.prototype.supportsRaf_ = typeof window_1.requestAnimationFrame === 'function' && typeof window_1.cancelAnimationFrame === 'function'; + + Component.registerComponent('Component', Component); + + /** + * @file browser.js + * @module browser + */ + + var USER_AGENT = window_1.navigator && window_1.navigator.userAgent || ''; + var webkitVersionMap = /AppleWebKit\/([\d.]+)/i.exec(USER_AGENT); + var appleWebkitVersion = webkitVersionMap ? parseFloat(webkitVersionMap.pop()) : null; + + /* + * Device is an iPhone + * + * @type {Boolean} + * @constant + * @private + */ + var IS_IPAD = /iPad/i.test(USER_AGENT); + + // The Facebook app's UIWebView identifies as both an iPhone and iPad, so + // to identify iPhones, we need to exclude iPads. + // http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/ + var IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD; + var IS_IPOD = /iPod/i.test(USER_AGENT); + var IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD; + + var IOS_VERSION = function () { + var match = USER_AGENT.match(/OS (\d+)_/i); + + if (match && match[1]) { + return match[1]; + } + return null; + }(); + + var IS_ANDROID = /Android/i.test(USER_AGENT); + var ANDROID_VERSION = function () { + // This matches Android Major.Minor.Patch versions + // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned + var match = USER_AGENT.match(/Android (\d+)(?:\.(\d+))?(?:\.(\d+))*/i); + + if (!match) { + return null; + } + + var major = match[1] && parseFloat(match[1]); + var minor = match[2] && parseFloat(match[2]); + + if (major && minor) { + return parseFloat(match[1] + '.' + match[2]); + } else if (major) { + return major; + } + return null; + }(); + + var IS_NATIVE_ANDROID = IS_ANDROID && ANDROID_VERSION < 5 && appleWebkitVersion < 537; + + var IS_FIREFOX = /Firefox/i.test(USER_AGENT); + var IS_EDGE = /Edge/i.test(USER_AGENT); + var IS_CHROME = !IS_EDGE && (/Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT)); + var CHROME_VERSION = function () { + var match = USER_AGENT.match(/(Chrome|CriOS)\/(\d+)/); + + if (match && match[2]) { + return parseFloat(match[2]); + } + return null; + }(); + var IE_VERSION = function () { + var result = /MSIE\s(\d+)\.\d/.exec(USER_AGENT); + var version = result && parseFloat(result[1]); + + if (!version && /Trident\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) { + // IE 11 has a different user agent string than other IE versions + version = 11.0; + } + + return version; + }(); + + var IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE; + var IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME; + + var TOUCH_ENABLED = isReal() && ('ontouchstart' in window_1 || window_1.navigator.maxTouchPoints || window_1.DocumentTouch && window_1.document instanceof window_1.DocumentTouch); + + var browser = /*#__PURE__*/Object.freeze({ + IS_IPAD: IS_IPAD, + IS_IPHONE: IS_IPHONE, + IS_IPOD: IS_IPOD, + IS_IOS: IS_IOS, + IOS_VERSION: IOS_VERSION, + IS_ANDROID: IS_ANDROID, + ANDROID_VERSION: ANDROID_VERSION, + IS_NATIVE_ANDROID: IS_NATIVE_ANDROID, + IS_FIREFOX: IS_FIREFOX, + IS_EDGE: IS_EDGE, + IS_CHROME: IS_CHROME, + CHROME_VERSION: CHROME_VERSION, + IE_VERSION: IE_VERSION, + IS_SAFARI: IS_SAFARI, + IS_ANY_SAFARI: IS_ANY_SAFARI, + TOUCH_ENABLED: TOUCH_ENABLED + }); + + /** + * @file time-ranges.js + * @module time-ranges + */ + + /** + * Returns the time for the specified index at the start or end + * of a TimeRange object. + * + * @function time-ranges:indexFunction + * + * @param {number} [index=0] + * The range number to return the time for. + * + * @return {number} + * The time that offset at the specified index. + * + * @depricated index must be set to a value, in the future this will throw an error. + */ + + /** + * An object that contains ranges of time for various reasons. + * + * @typedef {Object} TimeRange + * + * @property {number} length + * The number of time ranges represented by this Object + * + * @property {time-ranges:indexFunction} start + * Returns the time offset at which a specified time range begins. + * + * @property {time-ranges:indexFunction} end + * Returns the time offset at which a specified time range ends. + * + * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges + */ + + /** + * Check if any of the time ranges are over the maximum index. + * + * @param {string} fnName + * The function name to use for logging + * + * @param {number} index + * The index to check + * + * @param {number} maxIndex + * The maximum possible index + * + * @throws {Error} if the timeRanges provided are over the maxIndex + */ + function rangeCheck(fnName, index, maxIndex) { + if (typeof index !== 'number' || index < 0 || index > maxIndex) { + throw new Error('Failed to execute \'' + fnName + '\' on \'TimeRanges\': The index provided (' + index + ') is non-numeric or out of bounds (0-' + maxIndex + ').'); + } + } + + /** + * Get the time for the specified index at the start or end + * of a TimeRange object. + * + * @param {string} fnName + * The function name to use for logging + * + * @param {string} valueIndex + * The property that should be used to get the time. should be 'start' or 'end' + * + * @param {Array} ranges + * An array of time ranges + * + * @param {Array} [rangeIndex=0] + * The index to start the search at + * + * @return {number} + * The time that offset at the specified index. + * + * + * @depricated rangeIndex must be set to a value, in the future this will throw an error. + * @throws {Error} if rangeIndex is more than the length of ranges + */ + function getRange(fnName, valueIndex, ranges, rangeIndex) { + rangeCheck(fnName, rangeIndex, ranges.length - 1); + return ranges[rangeIndex][valueIndex]; + } + + /** + * Create a time range object given ranges of time. + * + * @param {Array} [ranges] + * An array of time ranges. + */ + function createTimeRangesObj(ranges) { + if (ranges === undefined || ranges.length === 0) { + return { + length: 0, + start: function start() { + throw new Error('This TimeRanges object is empty'); + }, + end: function end() { + throw new Error('This TimeRanges object is empty'); + } + }; + } + return { + length: ranges.length, + start: getRange.bind(null, 'start', 0, ranges), + end: getRange.bind(null, 'end', 1, ranges) + }; + } + + /** + * Should create a fake `TimeRange` object which mimics an HTML5 time range instance. + * + * @param {number|Array} start + * The start of a single range or an array of ranges + * + * @param {number} end + * The end of a single range. + * + * @private + */ + function createTimeRanges(start, end) { + if (Array.isArray(start)) { + return createTimeRangesObj(start); + } else if (start === undefined || end === undefined) { + return createTimeRangesObj(); + } + return createTimeRangesObj([[start, end]]); + } + + /** + * @file buffer.js + * @module buffer + */ + + /** + * Compute the percentage of the media that has been buffered. + * + * @param {TimeRange} buffered + * The current `TimeRange` object representing buffered time ranges + * + * @param {number} duration + * Total duration of the media + * + * @return {number} + * Percent buffered of the total duration in decimal form. + */ + function bufferedPercent(buffered, duration) { + var bufferedDuration = 0; + var start = void 0; + var end = void 0; + + if (!duration) { + return 0; + } + + if (!buffered || !buffered.length) { + buffered = createTimeRanges(0, 0); + } + + for (var i = 0; i < buffered.length; i++) { + start = buffered.start(i); + end = buffered.end(i); + + // buffered end can be bigger than duration by a very small fraction + if (end > duration) { + end = duration; + } + + bufferedDuration += end - start; + } + + return bufferedDuration / duration; + } + + /** + * @file fullscreen-api.js + * @module fullscreen-api + * @private + */ + + /** + * Store the browser-specific methods for the fullscreen API. + * + * @type {Object} + * @see [Specification]{@link https://fullscreen.spec.whatwg.org} + * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js} + */ + var FullscreenApi = {}; + + // browser API methods + var apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror'], + // WebKit + ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror'], + // Old WebKit (Safari 5.1) + ['webkitRequestFullScreen', 'webkitCancelFullScreen', 'webkitCurrentFullScreenElement', 'webkitCancelFullScreen', 'webkitfullscreenchange', 'webkitfullscreenerror'], + // Mozilla + ['mozRequestFullScreen', 'mozCancelFullScreen', 'mozFullScreenElement', 'mozFullScreenEnabled', 'mozfullscreenchange', 'mozfullscreenerror'], + // Microsoft + ['msRequestFullscreen', 'msExitFullscreen', 'msFullscreenElement', 'msFullscreenEnabled', 'MSFullscreenChange', 'MSFullscreenError']]; + + var specApi = apiMap[0]; + var browserApi = void 0; + + // determine the supported set of functions + for (var i = 0; i < apiMap.length; i++) { + // check for exitFullscreen function + if (apiMap[i][1] in document_1) { + browserApi = apiMap[i]; + break; + } + } + + // map the browser API names to the spec API names + if (browserApi) { + for (var _i = 0; _i < browserApi.length; _i++) { + FullscreenApi[specApi[_i]] = browserApi[_i]; + } + } + + /** + * @file media-error.js + */ + + /** + * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class. + * + * @param {number|string|Object|MediaError} value + * This can be of multiple types: + * - number: should be a standard error code + * - string: an error message (the code will be 0) + * - Object: arbitrary properties + * - `MediaError` (native): used to populate a video.js `MediaError` object + * - `MediaError` (video.js): will return itself if it's already a + * video.js `MediaError` object. + * + * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror} + * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes} + * + * @class MediaError + */ + function MediaError(value) { + + // Allow redundant calls to this constructor to avoid having `instanceof` + // checks peppered around the code. + if (value instanceof MediaError) { + return value; + } + + if (typeof value === 'number') { + this.code = value; + } else if (typeof value === 'string') { + // default code is zero, so this is a custom error + this.message = value; + } else if (isObject(value)) { + + // We assign the `code` property manually because native `MediaError` objects + // do not expose it as an own/enumerable property of the object. + if (typeof value.code === 'number') { + this.code = value.code; + } + + assign(this, value); + } + + if (!this.message) { + this.message = MediaError.defaultMessages[this.code] || ''; + } + } + + /** + * The error code that refers two one of the defined `MediaError` types + * + * @type {Number} + */ + MediaError.prototype.code = 0; + + /** + * An optional message that to show with the error. Message is not part of the HTML5 + * video spec but allows for more informative custom errors. + * + * @type {String} + */ + MediaError.prototype.message = ''; + + /** + * An optional status code that can be set by plugins to allow even more detail about + * the error. For example a plugin might provide a specific HTTP status code and an + * error message for that code. Then when the plugin gets that error this class will + * know how to display an error message for it. This allows a custom message to show + * up on the `Player` error overlay. + * + * @type {Array} + */ + MediaError.prototype.status = null; + + /** + * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the + * specification listed under {@link MediaError} for more information. + * + * @enum {array} + * @readonly + * @property {string} 0 - MEDIA_ERR_CUSTOM + * @property {string} 1 - MEDIA_ERR_CUSTOM + * @property {string} 2 - MEDIA_ERR_ABORTED + * @property {string} 3 - MEDIA_ERR_NETWORK + * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED + * @property {string} 5 - MEDIA_ERR_ENCRYPTED + */ + MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED']; + + /** + * The default `MediaError` messages based on the {@link MediaError.errorTypes}. + * + * @type {Array} + * @constant + */ + MediaError.defaultMessages = { + 1: 'You aborted the media playback', + 2: 'A network error caused the media download to fail part-way.', + 3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.', + 4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.', + 5: 'The media is encrypted and we do not have the keys to decrypt it.' + }; + + // Add types as properties on MediaError + // e.g. MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4; + for (var errNum = 0; errNum < MediaError.errorTypes.length; errNum++) { + MediaError[MediaError.errorTypes[errNum]] = errNum; + // values should be accessible on both the class and instance + MediaError.prototype[MediaError.errorTypes[errNum]] = errNum; + } + + var tuple = SafeParseTuple; + + function SafeParseTuple(obj, reviver) { + var json; + var error = null; + + try { + json = JSON.parse(obj, reviver); + } catch (err) { + error = err; + } + + return [error, json]; + } + + /** + * Returns whether an object is `Promise`-like (i.e. has a `then` method). + * + * @param {Object} value + * An object that may or may not be `Promise`-like. + * + * @return {Boolean} + * Whether or not the object is `Promise`-like. + */ + function isPromise(value) { + return value !== undefined && value !== null && typeof value.then === 'function'; + } + + /** + * Silence a Promise-like object. + * + * This is useful for avoiding non-harmful, but potentially confusing "uncaught + * play promise" rejection error messages. + * + * @param {Object} value + * An object that may or may not be `Promise`-like. + */ + function silencePromise(value) { + if (isPromise(value)) { + value.then(null, function (e) {}); + } + } + + /** + * @file text-track-list-converter.js Utilities for capturing text track state and + * re-creating tracks based on a capture. + * + * @module text-track-list-converter + */ + + /** + * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that + * represents the {@link TextTrack}'s state. + * + * @param {TextTrack} track + * The text track to query. + * + * @return {Object} + * A serializable javascript representation of the TextTrack. + * @private + */ + var trackToJson_ = function trackToJson_(track) { + var ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce(function (acc, prop, i) { + + if (track[prop]) { + acc[prop] = track[prop]; + } + + return acc; + }, { + cues: track.cues && Array.prototype.map.call(track.cues, function (cue) { + return { + startTime: cue.startTime, + endTime: cue.endTime, + text: cue.text, + id: cue.id + }; + }) + }); + + return ret; + }; + + /** + * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the + * state of all {@link TextTrack}s currently configured. The return array is compatible with + * {@link text-track-list-converter:jsonToTextTracks}. + * + * @param {Tech} tech + * The tech object to query + * + * @return {Array} + * A serializable javascript representation of the {@link Tech}s + * {@link TextTrackList}. + */ + var textTracksToJson = function textTracksToJson(tech) { + + var trackEls = tech.$$('track'); + + var trackObjs = Array.prototype.map.call(trackEls, function (t) { + return t.track; + }); + var tracks = Array.prototype.map.call(trackEls, function (trackEl) { + var json = trackToJson_(trackEl.track); + + if (trackEl.src) { + json.src = trackEl.src; + } + return json; + }); + + return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) { + return trackObjs.indexOf(track) === -1; + }).map(trackToJson_)); + }; + + /** + * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript + * object {@link TextTrack} representations. + * + * @param {Array} json + * An array of `TextTrack` representation objects, like those that would be + * produced by `textTracksToJson`. + * + * @param {Tech} tech + * The `Tech` to create the `TextTrack`s on. + */ + var jsonToTextTracks = function jsonToTextTracks(json, tech) { + json.forEach(function (track) { + var addedTrack = tech.addRemoteTextTrack(track).track; + + if (!track.src && track.cues) { + track.cues.forEach(function (cue) { + return addedTrack.addCue(cue); + }); + } + }); + + return tech.textTracks(); + }; + + var textTrackConverter = { textTracksToJson: textTracksToJson, jsonToTextTracks: jsonToTextTracks, trackToJson_: trackToJson_ }; + + /** + * @file modal-dialog.js + */ + + var MODAL_CLASS_NAME = 'vjs-modal-dialog'; + var ESC = 27; + + /** + * The `ModalDialog` displays over the video and its controls, which blocks + * interaction with the player until it is closed. + * + * Modal dialogs include a "Close" button and will close when that button + * is activated - or when ESC is pressed anywhere. + * + * @extends Component + */ + + var ModalDialog = function (_Component) { + inherits(ModalDialog, _Component); + + /** + * Create an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Mixed} [options.content=undefined] + * Provide customized content for this modal. + * + * @param {string} [options.description] + * A text description for the modal, primarily for accessibility. + * + * @param {boolean} [options.fillAlways=false] + * Normally, modals are automatically filled only the first time + * they open. This tells the modal to refresh its content + * every time it opens. + * + * @param {string} [options.label] + * A text label for the modal, primarily for accessibility. + * + * @param {boolean} [options.temporary=true] + * If `true`, the modal can only be opened once; it will be + * disposed as soon as it's closed. + * + * @param {boolean} [options.uncloseable=false] + * If `true`, the user will not be able to close the modal + * through the UI in the normal ways. Programmatic closing is + * still possible. + */ + function ModalDialog(player, options) { + classCallCheck(this, ModalDialog); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.opened_ = _this.hasBeenOpened_ = _this.hasBeenFilled_ = false; + + _this.closeable(!_this.options_.uncloseable); + _this.content(_this.options_.content); + + // Make sure the contentEl is defined AFTER any children are initialized + // because we only want the contents of the modal in the contentEl + // (not the UI elements like the close button). + _this.contentEl_ = createEl('div', { + className: MODAL_CLASS_NAME + '-content' + }, { + role: 'document' + }); + + _this.descEl_ = createEl('p', { + className: MODAL_CLASS_NAME + '-description vjs-control-text', + id: _this.el().getAttribute('aria-describedby') + }); + + textContent(_this.descEl_, _this.description()); + _this.el_.appendChild(_this.descEl_); + _this.el_.appendChild(_this.contentEl_); + return _this; + } + + /** + * Create the `ModalDialog`'s DOM element + * + * @return {Element} + * The DOM element that gets created. + */ + + + ModalDialog.prototype.createEl = function createEl$$1() { + return _Component.prototype.createEl.call(this, 'div', { + className: this.buildCSSClass(), + tabIndex: -1 + }, { + 'aria-describedby': this.id() + '_description', + 'aria-hidden': 'true', + 'aria-label': this.label(), + 'role': 'dialog' + }); + }; + + ModalDialog.prototype.dispose = function dispose() { + this.contentEl_ = null; + this.descEl_ = null; + this.previouslyActiveEl_ = null; + + _Component.prototype.dispose.call(this); + }; + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + ModalDialog.prototype.buildCSSClass = function buildCSSClass() { + return MODAL_CLASS_NAME + ' vjs-hidden ' + _Component.prototype.buildCSSClass.call(this); + }; + + /** + * Handles `keydown` events on the document, looking for ESC, which closes + * the modal. + * + * @param {EventTarget~Event} e + * The keypress that triggered this event. + * + * @listens keydown + */ + + + ModalDialog.prototype.handleKeyPress = function handleKeyPress(e) { + if (e.which === ESC && this.closeable()) { + this.close(); + } + }; + + /** + * Returns the label string for this modal. Primarily used for accessibility. + * + * @return {string} + * the localized or raw label of this modal. + */ + + + ModalDialog.prototype.label = function label() { + return this.localize(this.options_.label || 'Modal Window'); + }; + + /** + * Returns the description string for this modal. Primarily used for + * accessibility. + * + * @return {string} + * The localized or raw description of this modal. + */ + + + ModalDialog.prototype.description = function description() { + var desc = this.options_.description || this.localize('This is a modal window.'); + + // Append a universal closeability message if the modal is closeable. + if (this.closeable()) { + desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.'); + } + + return desc; + }; + + /** + * Opens the modal. + * + * @fires ModalDialog#beforemodalopen + * @fires ModalDialog#modalopen + */ + + + ModalDialog.prototype.open = function open() { + if (!this.opened_) { + var player = this.player(); + + /** + * Fired just before a `ModalDialog` is opened. + * + * @event ModalDialog#beforemodalopen + * @type {EventTarget~Event} + */ + this.trigger('beforemodalopen'); + this.opened_ = true; + + // Fill content if the modal has never opened before and + // never been filled. + if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) { + this.fill(); + } + + // If the player was playing, pause it and take note of its previously + // playing state. + this.wasPlaying_ = !player.paused(); + + if (this.options_.pauseOnOpen && this.wasPlaying_) { + player.pause(); + } + + if (this.closeable()) { + this.on(this.el_.ownerDocument, 'keydown', bind(this, this.handleKeyPress)); + } + + // Hide controls and note if they were enabled. + this.hadControls_ = player.controls(); + player.controls(false); + + this.show(); + this.conditionalFocus_(); + this.el().setAttribute('aria-hidden', 'false'); + + /** + * Fired just after a `ModalDialog` is opened. + * + * @event ModalDialog#modalopen + * @type {EventTarget~Event} + */ + this.trigger('modalopen'); + this.hasBeenOpened_ = true; + } + }; + + /** + * If the `ModalDialog` is currently open or closed. + * + * @param {boolean} [value] + * If given, it will open (`true`) or close (`false`) the modal. + * + * @return {boolean} + * the current open state of the modaldialog + */ + + + ModalDialog.prototype.opened = function opened(value) { + if (typeof value === 'boolean') { + this[value ? 'open' : 'close'](); + } + return this.opened_; + }; + + /** + * Closes the modal, does nothing if the `ModalDialog` is + * not open. + * + * @fires ModalDialog#beforemodalclose + * @fires ModalDialog#modalclose + */ + + + ModalDialog.prototype.close = function close() { + if (!this.opened_) { + return; + } + var player = this.player(); + + /** + * Fired just before a `ModalDialog` is closed. + * + * @event ModalDialog#beforemodalclose + * @type {EventTarget~Event} + */ + this.trigger('beforemodalclose'); + this.opened_ = false; + + if (this.wasPlaying_ && this.options_.pauseOnOpen) { + player.play(); + } + + if (this.closeable()) { + this.off(this.el_.ownerDocument, 'keydown', bind(this, this.handleKeyPress)); + } + + if (this.hadControls_) { + player.controls(true); + } + + this.hide(); + this.el().setAttribute('aria-hidden', 'true'); + + /** + * Fired just after a `ModalDialog` is closed. + * + * @event ModalDialog#modalclose + * @type {EventTarget~Event} + */ + this.trigger('modalclose'); + this.conditionalBlur_(); + + if (this.options_.temporary) { + this.dispose(); + } + }; + + /** + * Check to see if the `ModalDialog` is closeable via the UI. + * + * @param {boolean} [value] + * If given as a boolean, it will set the `closeable` option. + * + * @return {boolean} + * Returns the final value of the closable option. + */ + + + ModalDialog.prototype.closeable = function closeable(value) { + if (typeof value === 'boolean') { + var closeable = this.closeable_ = !!value; + var close = this.getChild('closeButton'); + + // If this is being made closeable and has no close button, add one. + if (closeable && !close) { + + // The close button should be a child of the modal - not its + // content element, so temporarily change the content element. + var temp = this.contentEl_; + + this.contentEl_ = this.el_; + close = this.addChild('closeButton', { controlText: 'Close Modal Dialog' }); + this.contentEl_ = temp; + this.on(close, 'close', this.close); + } + + // If this is being made uncloseable and has a close button, remove it. + if (!closeable && close) { + this.off(close, 'close', this.close); + this.removeChild(close); + close.dispose(); + } + } + return this.closeable_; + }; + + /** + * Fill the modal's content element with the modal's "content" option. + * The content element will be emptied before this change takes place. + */ + + + ModalDialog.prototype.fill = function fill() { + this.fillWith(this.content()); + }; + + /** + * Fill the modal's content element with arbitrary content. + * The content element will be emptied before this change takes place. + * + * @fires ModalDialog#beforemodalfill + * @fires ModalDialog#modalfill + * + * @param {Mixed} [content] + * The same rules apply to this as apply to the `content` option. + */ + + + ModalDialog.prototype.fillWith = function fillWith(content) { + var contentEl = this.contentEl(); + var parentEl = contentEl.parentNode; + var nextSiblingEl = contentEl.nextSibling; + + /** + * Fired just before a `ModalDialog` is filled with content. + * + * @event ModalDialog#beforemodalfill + * @type {EventTarget~Event} + */ + this.trigger('beforemodalfill'); + this.hasBeenFilled_ = true; + + // Detach the content element from the DOM before performing + // manipulation to avoid modifying the live DOM multiple times. + parentEl.removeChild(contentEl); + this.empty(); + insertContent(contentEl, content); + /** + * Fired just after a `ModalDialog` is filled with content. + * + * @event ModalDialog#modalfill + * @type {EventTarget~Event} + */ + this.trigger('modalfill'); + + // Re-inject the re-filled content element. + if (nextSiblingEl) { + parentEl.insertBefore(contentEl, nextSiblingEl); + } else { + parentEl.appendChild(contentEl); + } + + // make sure that the close button is last in the dialog DOM + var closeButton = this.getChild('closeButton'); + + if (closeButton) { + parentEl.appendChild(closeButton.el_); + } + }; + + /** + * Empties the content element. This happens anytime the modal is filled. + * + * @fires ModalDialog#beforemodalempty + * @fires ModalDialog#modalempty + */ + + + ModalDialog.prototype.empty = function empty() { + /** + * Fired just before a `ModalDialog` is emptied. + * + * @event ModalDialog#beforemodalempty + * @type {EventTarget~Event} + */ + this.trigger('beforemodalempty'); + emptyEl(this.contentEl()); + + /** + * Fired just after a `ModalDialog` is emptied. + * + * @event ModalDialog#modalempty + * @type {EventTarget~Event} + */ + this.trigger('modalempty'); + }; + + /** + * Gets or sets the modal content, which gets normalized before being + * rendered into the DOM. + * + * This does not update the DOM or fill the modal, but it is called during + * that process. + * + * @param {Mixed} [value] + * If defined, sets the internal content value to be used on the + * next call(s) to `fill`. This value is normalized before being + * inserted. To "clear" the internal content value, pass `null`. + * + * @return {Mixed} + * The current content of the modal dialog + */ + + + ModalDialog.prototype.content = function content(value) { + if (typeof value !== 'undefined') { + this.content_ = value; + } + return this.content_; + }; + + /** + * conditionally focus the modal dialog if focus was previously on the player. + * + * @private + */ + + + ModalDialog.prototype.conditionalFocus_ = function conditionalFocus_() { + var activeEl = document_1.activeElement; + var playerEl = this.player_.el_; + + this.previouslyActiveEl_ = null; + + if (playerEl.contains(activeEl) || playerEl === activeEl) { + this.previouslyActiveEl_ = activeEl; + + this.focus(); + + this.on(document_1, 'keydown', this.handleKeyDown); + } + }; + + /** + * conditionally blur the element and refocus the last focused element + * + * @private + */ + + + ModalDialog.prototype.conditionalBlur_ = function conditionalBlur_() { + if (this.previouslyActiveEl_) { + this.previouslyActiveEl_.focus(); + this.previouslyActiveEl_ = null; + } + + this.off(document_1, 'keydown', this.handleKeyDown); + }; + + /** + * Keydown handler. Attached when modal is focused. + * + * @listens keydown + */ + + + ModalDialog.prototype.handleKeyDown = function handleKeyDown(event) { + // exit early if it isn't a tab key + if (event.which !== 9) { + return; + } + + var focusableEls = this.focusableEls_(); + var activeEl = this.el_.querySelector(':focus'); + var focusIndex = void 0; + + for (var i = 0; i < focusableEls.length; i++) { + if (activeEl === focusableEls[i]) { + focusIndex = i; + break; + } + } + + if (document_1.activeElement === this.el_) { + focusIndex = 0; + } + + if (event.shiftKey && focusIndex === 0) { + focusableEls[focusableEls.length - 1].focus(); + event.preventDefault(); + } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) { + focusableEls[0].focus(); + event.preventDefault(); + } + }; + + /** + * get all focusable elements + * + * @private + */ + + + ModalDialog.prototype.focusableEls_ = function focusableEls_() { + var allChildren = this.el_.querySelectorAll('*'); + + return Array.prototype.filter.call(allChildren, function (child) { + return (child instanceof window_1.HTMLAnchorElement || child instanceof window_1.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window_1.HTMLInputElement || child instanceof window_1.HTMLSelectElement || child instanceof window_1.HTMLTextAreaElement || child instanceof window_1.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window_1.HTMLIFrameElement || child instanceof window_1.HTMLObjectElement || child instanceof window_1.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable'); + }); + }; + + return ModalDialog; + }(Component); + + /** + * Default options for `ModalDialog` default options. + * + * @type {Object} + * @private + */ + + + ModalDialog.prototype.options_ = { + pauseOnOpen: true, + temporary: true + }; + + Component.registerComponent('ModalDialog', ModalDialog); + + /** + * @file track-list.js + */ + + /** + * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and + * {@link VideoTrackList} + * + * @extends EventTarget + */ + + var TrackList = function (_EventTarget) { + inherits(TrackList, _EventTarget); + + /** + * Create an instance of this class + * + * @param {Track[]} tracks + * A list of tracks to initialize the list with. + * + * @abstract + */ + function TrackList() { + var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : []; + classCallCheck(this, TrackList); + + var _this = possibleConstructorReturn(this, _EventTarget.call(this)); + + _this.tracks_ = []; + + /** + * @memberof TrackList + * @member {number} length + * The current number of `Track`s in the this Trackist. + * @instance + */ + Object.defineProperty(_this, 'length', { + get: function get$$1() { + return this.tracks_.length; + } + }); + + for (var i = 0; i < tracks.length; i++) { + _this.addTrack(tracks[i]); + } + return _this; + } + + /** + * Add a {@link Track} to the `TrackList` + * + * @param {Track} track + * The audio, video, or text track to add to the list. + * + * @fires TrackList#addtrack + */ + + + TrackList.prototype.addTrack = function addTrack(track) { + var index = this.tracks_.length; + + if (!('' + index in this)) { + Object.defineProperty(this, index, { + get: function get$$1() { + return this.tracks_[index]; + } + }); + } + + // Do not add duplicate tracks + if (this.tracks_.indexOf(track) === -1) { + this.tracks_.push(track); + /** + * Triggered when a track is added to a track list. + * + * @event TrackList#addtrack + * @type {EventTarget~Event} + * @property {Track} track + * A reference to track that was added. + */ + this.trigger({ + track: track, + type: 'addtrack' + }); + } + }; + + /** + * Remove a {@link Track} from the `TrackList` + * + * @param {Track} rtrack + * The audio, video, or text track to remove from the list. + * + * @fires TrackList#removetrack + */ + + + TrackList.prototype.removeTrack = function removeTrack(rtrack) { + var track = void 0; + + for (var i = 0, l = this.length; i < l; i++) { + if (this[i] === rtrack) { + track = this[i]; + if (track.off) { + track.off(); + } + + this.tracks_.splice(i, 1); + + break; + } + } + + if (!track) { + return; + } + + /** + * Triggered when a track is removed from track list. + * + * @event TrackList#removetrack + * @type {EventTarget~Event} + * @property {Track} track + * A reference to track that was removed. + */ + this.trigger({ + track: track, + type: 'removetrack' + }); + }; + + /** + * Get a Track from the TrackList by a tracks id + * + * @param {String} id - the id of the track to get + * @method getTrackById + * @return {Track} + * @private + */ + + + TrackList.prototype.getTrackById = function getTrackById(id) { + var result = null; + + for (var i = 0, l = this.length; i < l; i++) { + var track = this[i]; + + if (track.id === id) { + result = track; + break; + } + } + + return result; + }; + + return TrackList; + }(EventTarget); + + /** + * Triggered when a different track is selected/enabled. + * + * @event TrackList#change + * @type {EventTarget~Event} + */ + + /** + * Events that can be called with on + eventName. See {@link EventHandler}. + * + * @property {Object} TrackList#allowedEvents_ + * @private + */ + + + TrackList.prototype.allowedEvents_ = { + change: 'change', + addtrack: 'addtrack', + removetrack: 'removetrack' + }; + + // emulate attribute EventHandler support to allow for feature detection + for (var event in TrackList.prototype.allowedEvents_) { + TrackList.prototype['on' + event] = null; + } + + /** + * @file audio-track-list.js + */ + + /** + * Anywhere we call this function we diverge from the spec + * as we only support one enabled audiotrack at a time + * + * @param {AudioTrackList} list + * list to work on + * + * @param {AudioTrack} track + * The track to skip + * + * @private + */ + var disableOthers = function disableOthers(list, track) { + for (var i = 0; i < list.length; i++) { + if (!Object.keys(list[i]).length || track.id === list[i].id) { + continue; + } + // another audio track is enabled, disable it + list[i].enabled = false; + } + }; + + /** + * The current list of {@link AudioTrack} for a media file. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist} + * @extends TrackList + */ + + var AudioTrackList = function (_TrackList) { + inherits(AudioTrackList, _TrackList); + + /** + * Create an instance of this class. + * + * @param {AudioTrack[]} [tracks=[]] + * A list of `AudioTrack` to instantiate the list with. + */ + function AudioTrackList() { + var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : []; + classCallCheck(this, AudioTrackList); + + // make sure only 1 track is enabled + // sorted from last index to first index + for (var i = tracks.length - 1; i >= 0; i--) { + if (tracks[i].enabled) { + disableOthers(tracks, tracks[i]); + break; + } + } + + var _this = possibleConstructorReturn(this, _TrackList.call(this, tracks)); + + _this.changing_ = false; + return _this; + } + + /** + * Add an {@link AudioTrack} to the `AudioTrackList`. + * + * @param {AudioTrack} track + * The AudioTrack to add to the list + * + * @fires TrackList#addtrack + */ + + + AudioTrackList.prototype.addTrack = function addTrack(track) { + var _this2 = this; + + if (track.enabled) { + disableOthers(this, track); + } + + _TrackList.prototype.addTrack.call(this, track); + // native tracks don't have this + if (!track.addEventListener) { + return; + } + + /** + * @listens AudioTrack#enabledchange + * @fires TrackList#change + */ + track.addEventListener('enabledchange', function () { + // when we are disabling other tracks (since we don't support + // more than one track at a time) we will set changing_ + // to true so that we don't trigger additional change events + if (_this2.changing_) { + return; + } + _this2.changing_ = true; + disableOthers(_this2, track); + _this2.changing_ = false; + _this2.trigger('change'); + }); + }; + + return AudioTrackList; + }(TrackList); + + /** + * @file video-track-list.js + */ + + /** + * Un-select all other {@link VideoTrack}s that are selected. + * + * @param {VideoTrackList} list + * list to work on + * + * @param {VideoTrack} track + * The track to skip + * + * @private + */ + var disableOthers$1 = function disableOthers(list, track) { + for (var i = 0; i < list.length; i++) { + if (!Object.keys(list[i]).length || track.id === list[i].id) { + continue; + } + // another video track is enabled, disable it + list[i].selected = false; + } + }; + + /** + * The current list of {@link VideoTrack} for a video. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist} + * @extends TrackList + */ + + var VideoTrackList = function (_TrackList) { + inherits(VideoTrackList, _TrackList); + + /** + * Create an instance of this class. + * + * @param {VideoTrack[]} [tracks=[]] + * A list of `VideoTrack` to instantiate the list with. + */ + function VideoTrackList() { + var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : []; + classCallCheck(this, VideoTrackList); + + // make sure only 1 track is enabled + // sorted from last index to first index + for (var i = tracks.length - 1; i >= 0; i--) { + if (tracks[i].selected) { + disableOthers$1(tracks, tracks[i]); + break; + } + } + + var _this = possibleConstructorReturn(this, _TrackList.call(this, tracks)); + + _this.changing_ = false; + + /** + * @member {number} VideoTrackList#selectedIndex + * The current index of the selected {@link VideoTrack`}. + */ + Object.defineProperty(_this, 'selectedIndex', { + get: function get$$1() { + for (var _i = 0; _i < this.length; _i++) { + if (this[_i].selected) { + return _i; + } + } + return -1; + }, + set: function set$$1() {} + }); + return _this; + } + + /** + * Add a {@link VideoTrack} to the `VideoTrackList`. + * + * @param {VideoTrack} track + * The VideoTrack to add to the list + * + * @fires TrackList#addtrack + */ + + + VideoTrackList.prototype.addTrack = function addTrack(track) { + var _this2 = this; + + if (track.selected) { + disableOthers$1(this, track); + } + + _TrackList.prototype.addTrack.call(this, track); + // native tracks don't have this + if (!track.addEventListener) { + return; + } + + /** + * @listens VideoTrack#selectedchange + * @fires TrackList#change + */ + track.addEventListener('selectedchange', function () { + if (_this2.changing_) { + return; + } + _this2.changing_ = true; + disableOthers$1(_this2, track); + _this2.changing_ = false; + _this2.trigger('change'); + }); + }; + + return VideoTrackList; + }(TrackList); + + /** + * @file text-track-list.js + */ + + /** + * The current list of {@link TextTrack} for a media file. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist} + * @extends TrackList + */ + + var TextTrackList = function (_TrackList) { + inherits(TextTrackList, _TrackList); + + function TextTrackList() { + classCallCheck(this, TextTrackList); + return possibleConstructorReturn(this, _TrackList.apply(this, arguments)); + } + + /** + * Add a {@link TextTrack} to the `TextTrackList` + * + * @param {TextTrack} track + * The text track to add to the list. + * + * @fires TrackList#addtrack + */ + TextTrackList.prototype.addTrack = function addTrack(track) { + _TrackList.prototype.addTrack.call(this, track); + + /** + * @listens TextTrack#modechange + * @fires TrackList#change + */ + track.addEventListener('modechange', bind(this, function () { + this.queueTrigger('change'); + })); + + var nonLanguageTextTrackKind = ['metadata', 'chapters']; + + if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) { + track.addEventListener('modechange', bind(this, function () { + this.trigger('selectedlanguagechange'); + })); + } + }; + + return TextTrackList; + }(TrackList); + + /** + * @file html-track-element-list.js + */ + + /** + * The current list of {@link HtmlTrackElement}s. + */ + var HtmlTrackElementList = function () { + + /** + * Create an instance of this class. + * + * @param {HtmlTrackElement[]} [tracks=[]] + * A list of `HtmlTrackElement` to instantiate the list with. + */ + function HtmlTrackElementList() { + var trackElements = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : []; + classCallCheck(this, HtmlTrackElementList); + + this.trackElements_ = []; + + /** + * @memberof HtmlTrackElementList + * @member {number} length + * The current number of `Track`s in the this Trackist. + * @instance + */ + Object.defineProperty(this, 'length', { + get: function get$$1() { + return this.trackElements_.length; + } + }); + + for (var i = 0, length = trackElements.length; i < length; i++) { + this.addTrackElement_(trackElements[i]); + } + } + + /** + * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList` + * + * @param {HtmlTrackElement} trackElement + * The track element to add to the list. + * + * @private + */ + + + HtmlTrackElementList.prototype.addTrackElement_ = function addTrackElement_(trackElement) { + var index = this.trackElements_.length; + + if (!('' + index in this)) { + Object.defineProperty(this, index, { + get: function get$$1() { + return this.trackElements_[index]; + } + }); + } + + // Do not add duplicate elements + if (this.trackElements_.indexOf(trackElement) === -1) { + this.trackElements_.push(trackElement); + } + }; + + /** + * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an + * {@link TextTrack}. + * + * @param {TextTrack} track + * The track associated with a track element. + * + * @return {HtmlTrackElement|undefined} + * The track element that was found or undefined. + * + * @private + */ + + + HtmlTrackElementList.prototype.getTrackElementByTrack_ = function getTrackElementByTrack_(track) { + var trackElement_ = void 0; + + for (var i = 0, length = this.trackElements_.length; i < length; i++) { + if (track === this.trackElements_[i].track) { + trackElement_ = this.trackElements_[i]; + + break; + } + } + + return trackElement_; + }; + + /** + * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList` + * + * @param {HtmlTrackElement} trackElement + * The track element to remove from the list. + * + * @private + */ + + + HtmlTrackElementList.prototype.removeTrackElement_ = function removeTrackElement_(trackElement) { + for (var i = 0, length = this.trackElements_.length; i < length; i++) { + if (trackElement === this.trackElements_[i]) { + this.trackElements_.splice(i, 1); + + break; + } + } + }; + + return HtmlTrackElementList; + }(); + + /** + * @file text-track-cue-list.js + */ + + /** + * @typedef {Object} TextTrackCueList~TextTrackCue + * + * @property {string} id + * The unique id for this text track cue + * + * @property {number} startTime + * The start time for this text track cue + * + * @property {number} endTime + * The end time for this text track cue + * + * @property {boolean} pauseOnExit + * Pause when the end time is reached if true. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue} + */ + + /** + * A List of TextTrackCues. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist} + */ + var TextTrackCueList = function () { + + /** + * Create an instance of this class.. + * + * @param {Array} cues + * A list of cues to be initialized with + */ + function TextTrackCueList(cues) { + classCallCheck(this, TextTrackCueList); + + TextTrackCueList.prototype.setCues_.call(this, cues); + + /** + * @memberof TextTrackCueList + * @member {number} length + * The current number of `TextTrackCue`s in the TextTrackCueList. + * @instance + */ + Object.defineProperty(this, 'length', { + get: function get$$1() { + return this.length_; + } + }); + } + + /** + * A setter for cues in this list. Creates getters + * an an index for the cues. + * + * @param {Array} cues + * An array of cues to set + * + * @private + */ + + + TextTrackCueList.prototype.setCues_ = function setCues_(cues) { + var oldLength = this.length || 0; + var i = 0; + var l = cues.length; + + this.cues_ = cues; + this.length_ = cues.length; + + var defineProp = function defineProp(index) { + if (!('' + index in this)) { + Object.defineProperty(this, '' + index, { + get: function get$$1() { + return this.cues_[index]; + } + }); + } + }; + + if (oldLength < l) { + i = oldLength; + + for (; i < l; i++) { + defineProp.call(this, i); + } + } + }; + + /** + * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id. + * + * @param {string} id + * The id of the cue that should be searched for. + * + * @return {TextTrackCueList~TextTrackCue|null} + * A single cue or null if none was found. + */ + + + TextTrackCueList.prototype.getCueById = function getCueById(id) { + var result = null; + + for (var i = 0, l = this.length; i < l; i++) { + var cue = this[i]; + + if (cue.id === id) { + result = cue; + break; + } + } + + return result; + }; + + return TextTrackCueList; + }(); + + /** + * @file track-kinds.js + */ + + /** + * All possible `VideoTrackKind`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind + * @typedef VideoTrack~Kind + * @enum + */ + var VideoTrackKind = { + alternative: 'alternative', + captions: 'captions', + main: 'main', + sign: 'sign', + subtitles: 'subtitles', + commentary: 'commentary' + }; + + /** + * All possible `AudioTrackKind`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind + * @typedef AudioTrack~Kind + * @enum + */ + var AudioTrackKind = { + 'alternative': 'alternative', + 'descriptions': 'descriptions', + 'main': 'main', + 'main-desc': 'main-desc', + 'translation': 'translation', + 'commentary': 'commentary' + }; + + /** + * All possible `TextTrackKind`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind + * @typedef TextTrack~Kind + * @enum + */ + var TextTrackKind = { + subtitles: 'subtitles', + captions: 'captions', + descriptions: 'descriptions', + chapters: 'chapters', + metadata: 'metadata' + }; + + /** + * All possible `TextTrackMode`s + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode + * @typedef TextTrack~Mode + * @enum + */ + var TextTrackMode = { + disabled: 'disabled', + hidden: 'hidden', + showing: 'showing' + }; + + /** + * @file track.js + */ + + /** + * A Track class that contains all of the common functionality for {@link AudioTrack}, + * {@link VideoTrack}, and {@link TextTrack}. + * + * > Note: This class should not be used directly + * + * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html} + * @extends EventTarget + * @abstract + */ + + var Track = function (_EventTarget) { + inherits(Track, _EventTarget); + + /** + * Create an instance of this class. + * + * @param {Object} [options={}] + * Object of option names and values + * + * @param {string} [options.kind=''] + * A valid kind for the track type you are creating. + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this AudioTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @abstract + */ + function Track() { + var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + classCallCheck(this, Track); + + var _this = possibleConstructorReturn(this, _EventTarget.call(this)); + + var trackProps = { + id: options.id || 'vjs_track_' + newGUID(), + kind: options.kind || '', + label: options.label || '', + language: options.language || '' + }; + + /** + * @memberof Track + * @member {string} id + * The id of this track. Cannot be changed after creation. + * @instance + * + * @readonly + */ + + /** + * @memberof Track + * @member {string} kind + * The kind of track that this is. Cannot be changed after creation. + * @instance + * + * @readonly + */ + + /** + * @memberof Track + * @member {string} label + * The label of this track. Cannot be changed after creation. + * @instance + * + * @readonly + */ + + /** + * @memberof Track + * @member {string} language + * The two letter language code for this track. Cannot be changed after + * creation. + * @instance + * + * @readonly + */ + + var _loop = function _loop(key) { + Object.defineProperty(_this, key, { + get: function get$$1() { + return trackProps[key]; + }, + set: function set$$1() {} + }); + }; + + for (var key in trackProps) { + _loop(key); + } + return _this; + } + + return Track; + }(EventTarget); + + /** + * @file url.js + * @module url + */ + + /** + * @typedef {Object} url:URLObject + * + * @property {string} protocol + * The protocol of the url that was parsed. + * + * @property {string} hostname + * The hostname of the url that was parsed. + * + * @property {string} port + * The port of the url that was parsed. + * + * @property {string} pathname + * The pathname of the url that was parsed. + * + * @property {string} search + * The search query of the url that was parsed. + * + * @property {string} hash + * The hash of the url that was parsed. + * + * @property {string} host + * The host of the url that was parsed. + */ + + /** + * Resolve and parse the elements of a URL. + * + * @param {String} url + * The url to parse + * + * @return {url:URLObject} + * An object of url details + */ + var parseUrl = function parseUrl(url) { + var props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host']; + + // add the url to an anchor and let the browser parse the URL + var a = document_1.createElement('a'); + + a.href = url; + + // IE8 (and 9?) Fix + // ie8 doesn't parse the URL correctly until the anchor is actually + // added to the body, and an innerHTML is needed to trigger the parsing + var addToBody = a.host === '' && a.protocol !== 'file:'; + var div = void 0; + + if (addToBody) { + div = document_1.createElement('div'); + div.innerHTML = '<a href="' + url + '"></a>'; + a = div.firstChild; + // prevent the div from affecting layout + div.setAttribute('style', 'display:none; position:absolute;'); + document_1.body.appendChild(div); + } + + // Copy the specific URL properties to a new object + // This is also needed for IE8 because the anchor loses its + // properties when it's removed from the dom + var details = {}; + + for (var i = 0; i < props.length; i++) { + details[props[i]] = a[props[i]]; + } + + // IE9 adds the port to the host property unlike everyone else. If + // a port identifier is added for standard ports, strip it. + if (details.protocol === 'http:') { + details.host = details.host.replace(/:80$/, ''); + } + + if (details.protocol === 'https:') { + details.host = details.host.replace(/:443$/, ''); + } + + if (!details.protocol) { + details.protocol = window_1.location.protocol; + } + + if (addToBody) { + document_1.body.removeChild(div); + } + + return details; + }; + + /** + * Get absolute version of relative URL. Used to tell flash correct URL. + * + * + * @param {string} url + * URL to make absolute + * + * @return {string} + * Absolute URL + * + * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue + */ + var getAbsoluteURL = function getAbsoluteURL(url) { + // Check if absolute URL + if (!url.match(/^https?:\/\//)) { + // Convert to absolute URL. Flash hosted off-site needs an absolute URL. + var div = document_1.createElement('div'); + + div.innerHTML = '<a href="' + url + '">x</a>'; + url = div.firstChild.href; + } + + return url; + }; + + /** + * Returns the extension of the passed file name. It will return an empty string + * if passed an invalid path. + * + * @param {string} path + * The fileName path like '/path/to/file.mp4' + * + * @returns {string} + * The extension in lower case or an empty string if no + * extension could be found. + */ + var getFileExtension = function getFileExtension(path) { + if (typeof path === 'string') { + var splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/i; + var pathParts = splitPathRe.exec(path); + + if (pathParts) { + return pathParts.pop().toLowerCase(); + } + } + + return ''; + }; + + /** + * Returns whether the url passed is a cross domain request or not. + * + * @param {string} url + * The url to check. + * + * @return {boolean} + * Whether it is a cross domain request or not. + */ + var isCrossOrigin = function isCrossOrigin(url) { + var winLoc = window_1.location; + var urlInfo = parseUrl(url); + + // IE8 protocol relative urls will return ':' for protocol + var srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol; + + // Check if url is for another domain/origin + // IE8 doesn't know location.origin, so we won't rely on it here + var crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host; + + return crossOrigin; + }; + + var Url = /*#__PURE__*/Object.freeze({ + parseUrl: parseUrl, + getAbsoluteURL: getAbsoluteURL, + getFileExtension: getFileExtension, + isCrossOrigin: isCrossOrigin + }); + + var isFunction_1 = isFunction; + + var toString$1 = Object.prototype.toString; + + function isFunction(fn) { + var string = toString$1.call(fn); + return string === '[object Function]' || typeof fn === 'function' && string !== '[object RegExp]' || typeof window !== 'undefined' && ( + // IE8 and below + fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt); + } + + var isFunction$1 = /*#__PURE__*/Object.freeze({ + default: isFunction_1, + __moduleExports: isFunction_1 + }); + + var trim_1 = createCommonjsModule(function (module, exports) { + exports = module.exports = trim; + + function trim(str) { + return str.replace(/^\s*|\s*$/g, ''); + } + + exports.left = function (str) { + return str.replace(/^\s*/, ''); + }; + + exports.right = function (str) { + return str.replace(/\s*$/, ''); + }; + }); + var trim_2 = trim_1.left; + var trim_3 = trim_1.right; + + var trim = /*#__PURE__*/Object.freeze({ + default: trim_1, + __moduleExports: trim_1, + left: trim_2, + right: trim_3 + }); + + var isFunction$2 = ( isFunction$1 && isFunction_1 ) || isFunction$1; + + var forEach_1 = forEach; + + var toString$2 = Object.prototype.toString; + var hasOwnProperty = Object.prototype.hasOwnProperty; + + function forEach(list, iterator, context) { + if (!isFunction$2(iterator)) { + throw new TypeError('iterator must be a function'); + } + + if (arguments.length < 3) { + context = this; + } + + if (toString$2.call(list) === '[object Array]') forEachArray(list, iterator, context);else if (typeof list === 'string') forEachString(list, iterator, context);else forEachObject(list, iterator, context); + } + + function forEachArray(array, iterator, context) { + for (var i = 0, len = array.length; i < len; i++) { + if (hasOwnProperty.call(array, i)) { + iterator.call(context, array[i], i, array); + } + } + } + + function forEachString(string, iterator, context) { + for (var i = 0, len = string.length; i < len; i++) { + // no such thing as a sparse string. + iterator.call(context, string.charAt(i), i, string); + } + } + + function forEachObject(object, iterator, context) { + for (var k in object) { + if (hasOwnProperty.call(object, k)) { + iterator.call(context, object[k], k, object); + } + } + } + + var forEach$1 = /*#__PURE__*/Object.freeze({ + default: forEach_1, + __moduleExports: forEach_1 + }); + + var trim$1 = ( trim && trim_1 ) || trim; + + var forEach$2 = ( forEach$1 && forEach_1 ) || forEach$1; + + var isArray = function isArray(arg) { + return Object.prototype.toString.call(arg) === '[object Array]'; + }; + + var parseHeaders = function parseHeaders(headers) { + if (!headers) return {}; + + var result = {}; + + forEach$2(trim$1(headers).split('\n'), function (row) { + var index = row.indexOf(':'), + key = trim$1(row.slice(0, index)).toLowerCase(), + value = trim$1(row.slice(index + 1)); + + if (typeof result[key] === 'undefined') { + result[key] = value; + } else if (isArray(result[key])) { + result[key].push(value); + } else { + result[key] = [result[key], value]; + } + }); + + return result; + }; + + var parseHeaders$1 = /*#__PURE__*/Object.freeze({ + default: parseHeaders, + __moduleExports: parseHeaders + }); + + var immutable = extend; + + var hasOwnProperty$1 = Object.prototype.hasOwnProperty; + + function extend() { + var target = {}; + + for (var i = 0; i < arguments.length; i++) { + var source = arguments[i]; + + for (var key in source) { + if (hasOwnProperty$1.call(source, key)) { + target[key] = source[key]; + } + } + } + + return target; + } + + var immutable$1 = /*#__PURE__*/Object.freeze({ + default: immutable, + __moduleExports: immutable + }); + + var parseHeaders$2 = ( parseHeaders$1 && parseHeaders ) || parseHeaders$1; + + var xtend = ( immutable$1 && immutable ) || immutable$1; + + var xhr = createXHR; + createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop; + createXHR.XDomainRequest = "withCredentials" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window_1.XDomainRequest; + + forEachArray$1(["get", "put", "post", "patch", "head", "delete"], function (method) { + createXHR[method === "delete" ? "del" : method] = function (uri, options, callback) { + options = initParams(uri, options, callback); + options.method = method.toUpperCase(); + return _createXHR(options); + }; + }); + + function forEachArray$1(array, iterator) { + for (var i = 0; i < array.length; i++) { + iterator(array[i]); + } + } + + function isEmpty(obj) { + for (var i in obj) { + if (obj.hasOwnProperty(i)) return false; + } + return true; + } + + function initParams(uri, options, callback) { + var params = uri; + + if (isFunction$2(options)) { + callback = options; + if (typeof uri === "string") { + params = { uri: uri }; + } + } else { + params = xtend(options, { uri: uri }); + } + + params.callback = callback; + return params; + } + + function createXHR(uri, options, callback) { + options = initParams(uri, options, callback); + return _createXHR(options); + } + + function _createXHR(options) { + if (typeof options.callback === "undefined") { + throw new Error("callback argument missing"); + } + + var called = false; + var callback = function cbOnce(err, response, body) { + if (!called) { + called = true; + options.callback(err, response, body); + } + }; + + function readystatechange() { + if (xhr.readyState === 4) { + setTimeout(loadFunc, 0); + } + } + + function getBody() { + // Chrome with requestType=blob throws errors arround when even testing access to responseText + var body = undefined; + + if (xhr.response) { + body = xhr.response; + } else { + body = xhr.responseText || getXml(xhr); + } + + if (isJson) { + try { + body = JSON.parse(body); + } catch (e) {} + } + + return body; + } + + function errorFunc(evt) { + clearTimeout(timeoutTimer); + if (!(evt instanceof Error)) { + evt = new Error("" + (evt || "Unknown XMLHttpRequest Error")); + } + evt.statusCode = 0; + return callback(evt, failureResponse); + } + + // will load the data & process the response in a special response object + function loadFunc() { + if (aborted) return; + var status; + clearTimeout(timeoutTimer); + if (options.useXDR && xhr.status === undefined) { + //IE8 CORS GET successful response doesn't have a status field, but body is fine + status = 200; + } else { + status = xhr.status === 1223 ? 204 : xhr.status; + } + var response = failureResponse; + var err = null; + + if (status !== 0) { + response = { + body: getBody(), + statusCode: status, + method: method, + headers: {}, + url: uri, + rawRequest: xhr + }; + if (xhr.getAllResponseHeaders) { + //remember xhr can in fact be XDR for CORS in IE + response.headers = parseHeaders$2(xhr.getAllResponseHeaders()); + } + } else { + err = new Error("Internal XMLHttpRequest Error"); + } + return callback(err, response, response.body); + } + + var xhr = options.xhr || null; + + if (!xhr) { + if (options.cors || options.useXDR) { + xhr = new createXHR.XDomainRequest(); + } else { + xhr = new createXHR.XMLHttpRequest(); + } + } + + var key; + var aborted; + var uri = xhr.url = options.uri || options.url; + var method = xhr.method = options.method || "GET"; + var body = options.body || options.data; + var headers = xhr.headers = options.headers || {}; + var sync = !!options.sync; + var isJson = false; + var timeoutTimer; + var failureResponse = { + body: undefined, + headers: {}, + statusCode: 0, + method: method, + url: uri, + rawRequest: xhr + }; + + if ("json" in options && options.json !== false) { + isJson = true; + headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user + if (method !== "GET" && method !== "HEAD") { + headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user + body = JSON.stringify(options.json === true ? body : options.json); + } + } + + xhr.onreadystatechange = readystatechange; + xhr.onload = loadFunc; + xhr.onerror = errorFunc; + // IE9 must have onprogress be set to a unique function. + xhr.onprogress = function () { + // IE must die + }; + xhr.onabort = function () { + aborted = true; + }; + xhr.ontimeout = errorFunc; + xhr.open(method, uri, !sync, options.username, options.password); + //has to be after open + if (!sync) { + xhr.withCredentials = !!options.withCredentials; + } + // Cannot set timeout with sync request + // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly + // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent + if (!sync && options.timeout > 0) { + timeoutTimer = setTimeout(function () { + if (aborted) return; + aborted = true; //IE9 may still call readystatechange + xhr.abort("timeout"); + var e = new Error("XMLHttpRequest timeout"); + e.code = "ETIMEDOUT"; + errorFunc(e); + }, options.timeout); + } + + if (xhr.setRequestHeader) { + for (key in headers) { + if (headers.hasOwnProperty(key)) { + xhr.setRequestHeader(key, headers[key]); + } + } + } else if (options.headers && !isEmpty(options.headers)) { + throw new Error("Headers cannot be set on an XDomainRequest object"); + } + + if ("responseType" in options) { + xhr.responseType = options.responseType; + } + + if ("beforeSend" in options && typeof options.beforeSend === "function") { + options.beforeSend(xhr); + } + + // Microsoft Edge browser sends "undefined" when send is called with undefined value. + // XMLHttpRequest spec says to pass null as body to indicate no body + // See https://github.com/naugtur/xhr/issues/100. + xhr.send(body || null); + + return xhr; + } + + function getXml(xhr) { + if (xhr.responseType === "document") { + return xhr.responseXML; + } + var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror"; + if (xhr.responseType === "" && !firefoxBugTakenEffect) { + return xhr.responseXML; + } + + return null; + } + + function noop() {} + + /** + * @file text-track.js + */ + + /** + * Takes a webvtt file contents and parses it into cues + * + * @param {string} srcContent + * webVTT file contents + * + * @param {TextTrack} track + * TextTrack to add cues to. Cues come from the srcContent. + * + * @private + */ + var parseCues = function parseCues(srcContent, track) { + var parser = new window_1.WebVTT.Parser(window_1, window_1.vttjs, window_1.WebVTT.StringDecoder()); + var errors = []; + + parser.oncue = function (cue) { + track.addCue(cue); + }; + + parser.onparsingerror = function (error) { + errors.push(error); + }; + + parser.onflush = function () { + track.trigger({ + type: 'loadeddata', + target: track + }); + }; + + parser.parse(srcContent); + if (errors.length > 0) { + if (window_1.console && window_1.console.groupCollapsed) { + window_1.console.groupCollapsed('Text Track parsing errors for ' + track.src); + } + errors.forEach(function (error) { + return log$1.error(error); + }); + if (window_1.console && window_1.console.groupEnd) { + window_1.console.groupEnd(); + } + } + + parser.flush(); + }; + + /** + * Load a `TextTrack` from a specified url. + * + * @param {string} src + * Url to load track from. + * + * @param {TextTrack} track + * Track to add cues to. Comes from the content at the end of `url`. + * + * @private + */ + var loadTrack = function loadTrack(src, track) { + var opts = { + uri: src + }; + var crossOrigin = isCrossOrigin(src); + + if (crossOrigin) { + opts.cors = crossOrigin; + } + + xhr(opts, bind(this, function (err, response, responseBody) { + if (err) { + return log$1.error(err, response); + } + + track.loaded_ = true; + + // Make sure that vttjs has loaded, otherwise, wait till it finished loading + // NOTE: this is only used for the alt/video.novtt.js build + if (typeof window_1.WebVTT !== 'function') { + if (track.tech_) { + var loadHandler = function loadHandler() { + return parseCues(responseBody, track); + }; + + track.tech_.on('vttjsloaded', loadHandler); + track.tech_.on('vttjserror', function () { + log$1.error('vttjs failed to load, stopping trying to process ' + track.src); + track.tech_.off('vttjsloaded', loadHandler); + }); + } + } else { + parseCues(responseBody, track); + } + })); + }; + + /** + * A representation of a single `TextTrack`. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack} + * @extends Track + */ + + var TextTrack = function (_Track) { + inherits(TextTrack, _Track); + + /** + * Create an instance of this class. + * + * @param {Object} options={} + * Object of option names and values + * + * @param {Tech} options.tech + * A reference to the tech that owns this TextTrack. + * + * @param {TextTrack~Kind} [options.kind='subtitles'] + * A valid text track kind. + * + * @param {TextTrack~Mode} [options.mode='disabled'] + * A valid text track mode. + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this TextTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {string} [options.srclang=''] + * A valid two character language code. An alternative, but deprioritized + * version of `options.language` + * + * @param {string} [options.src] + * A url to TextTrack cues. + * + * @param {boolean} [options.default] + * If this track should default to on or off. + */ + function TextTrack() { + var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + classCallCheck(this, TextTrack); + + if (!options.tech) { + throw new Error('A tech was not provided.'); + } + + var settings = mergeOptions(options, { + kind: TextTrackKind[options.kind] || 'subtitles', + language: options.language || options.srclang || '' + }); + var mode = TextTrackMode[settings.mode] || 'disabled'; + var default_ = settings.default; + + if (settings.kind === 'metadata' || settings.kind === 'chapters') { + mode = 'hidden'; + } + + var _this = possibleConstructorReturn(this, _Track.call(this, settings)); + + _this.tech_ = settings.tech; + + _this.cues_ = []; + _this.activeCues_ = []; + + var cues = new TextTrackCueList(_this.cues_); + var activeCues = new TextTrackCueList(_this.activeCues_); + var changed = false; + var timeupdateHandler = bind(_this, function () { + + // Accessing this.activeCues for the side-effects of updating itself + // due to it's nature as a getter function. Do not remove or cues will + // stop updating! + // Use the setter to prevent deletion from uglify (pure_getters rule) + this.activeCues = this.activeCues; + if (changed) { + this.trigger('cuechange'); + changed = false; + } + }); + + if (mode !== 'disabled') { + _this.tech_.ready(function () { + _this.tech_.on('timeupdate', timeupdateHandler); + }, true); + } + + Object.defineProperties(_this, { + /** + * @memberof TextTrack + * @member {boolean} default + * If this track was set to be on or off by default. Cannot be changed after + * creation. + * @instance + * + * @readonly + */ + default: { + get: function get$$1() { + return default_; + }, + set: function set$$1() {} + }, + + /** + * @memberof TextTrack + * @member {string} mode + * Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will + * not be set if setting to an invalid mode. + * @instance + * + * @fires TextTrack#modechange + */ + mode: { + get: function get$$1() { + return mode; + }, + set: function set$$1(newMode) { + var _this2 = this; + + if (!TextTrackMode[newMode]) { + return; + } + mode = newMode; + if (mode !== 'disabled') { + this.tech_.ready(function () { + _this2.tech_.on('timeupdate', timeupdateHandler); + }, true); + } else { + this.tech_.off('timeupdate', timeupdateHandler); + } + /** + * An event that fires when mode changes on this track. This allows + * the TextTrackList that holds this track to act accordingly. + * + * > Note: This is not part of the spec! + * + * @event TextTrack#modechange + * @type {EventTarget~Event} + */ + this.trigger('modechange'); + } + }, + + /** + * @memberof TextTrack + * @member {TextTrackCueList} cues + * The text track cue list for this TextTrack. + * @instance + */ + cues: { + get: function get$$1() { + if (!this.loaded_) { + return null; + } + + return cues; + }, + set: function set$$1() {} + }, + + /** + * @memberof TextTrack + * @member {TextTrackCueList} activeCues + * The list text track cues that are currently active for this TextTrack. + * @instance + */ + activeCues: { + get: function get$$1() { + if (!this.loaded_) { + return null; + } + + // nothing to do + if (this.cues.length === 0) { + return activeCues; + } + + var ct = this.tech_.currentTime(); + var active = []; + + for (var i = 0, l = this.cues.length; i < l; i++) { + var cue = this.cues[i]; + + if (cue.startTime <= ct && cue.endTime >= ct) { + active.push(cue); + } else if (cue.startTime === cue.endTime && cue.startTime <= ct && cue.startTime + 0.5 >= ct) { + active.push(cue); + } + } + + changed = false; + + if (active.length !== this.activeCues_.length) { + changed = true; + } else { + for (var _i = 0; _i < active.length; _i++) { + if (this.activeCues_.indexOf(active[_i]) === -1) { + changed = true; + } + } + } + + this.activeCues_ = active; + activeCues.setCues_(this.activeCues_); + + return activeCues; + }, + + + // /!\ Keep this setter empty (see the timeupdate handler above) + set: function set$$1() {} + } + }); + + if (settings.src) { + _this.src = settings.src; + loadTrack(settings.src, _this); + } else { + _this.loaded_ = true; + } + return _this; + } + + /** + * Add a cue to the internal list of cues. + * + * @param {TextTrack~Cue} cue + * The cue to add to our internal list + */ + + + TextTrack.prototype.addCue = function addCue(originalCue) { + var cue = originalCue; + + if (window_1.vttjs && !(originalCue instanceof window_1.vttjs.VTTCue)) { + cue = new window_1.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text); + + for (var prop in originalCue) { + if (!(prop in cue)) { + cue[prop] = originalCue[prop]; + } + } + + // make sure that `id` is copied over + cue.id = originalCue.id; + cue.originalCue_ = originalCue; + } + + var tracks = this.tech_.textTracks(); + + for (var i = 0; i < tracks.length; i++) { + if (tracks[i] !== this) { + tracks[i].removeCue(cue); + } + } + + this.cues_.push(cue); + this.cues.setCues_(this.cues_); + }; + + /** + * Remove a cue from our internal list + * + * @param {TextTrack~Cue} removeCue + * The cue to remove from our internal list + */ + + + TextTrack.prototype.removeCue = function removeCue(_removeCue) { + var i = this.cues_.length; + + while (i--) { + var cue = this.cues_[i]; + + if (cue === _removeCue || cue.originalCue_ && cue.originalCue_ === _removeCue) { + this.cues_.splice(i, 1); + this.cues.setCues_(this.cues_); + break; + } + } + }; + + return TextTrack; + }(Track); + + /** + * cuechange - One or more cues in the track have become active or stopped being active. + */ + + + TextTrack.prototype.allowedEvents_ = { + cuechange: 'cuechange' + }; + + /** + * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList} + * only one `AudioTrack` in the list will be enabled at a time. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack} + * @extends Track + */ + + var AudioTrack = function (_Track) { + inherits(AudioTrack, _Track); + + /** + * Create an instance of this class. + * + * @param {Object} [options={}] + * Object of option names and values + * + * @param {AudioTrack~Kind} [options.kind=''] + * A valid audio track kind + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this AudioTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {boolean} [options.enabled] + * If this track is the one that is currently playing. If this track is part of + * an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled. + */ + function AudioTrack() { + var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + classCallCheck(this, AudioTrack); + + var settings = mergeOptions(options, { + kind: AudioTrackKind[options.kind] || '' + }); + + var _this = possibleConstructorReturn(this, _Track.call(this, settings)); + + var enabled = false; + + /** + * @memberof AudioTrack + * @member {boolean} enabled + * If this `AudioTrack` is enabled or not. When setting this will + * fire {@link AudioTrack#enabledchange} if the state of enabled is changed. + * @instance + * + * @fires VideoTrack#selectedchange + */ + Object.defineProperty(_this, 'enabled', { + get: function get$$1() { + return enabled; + }, + set: function set$$1(newEnabled) { + // an invalid or unchanged value + if (typeof newEnabled !== 'boolean' || newEnabled === enabled) { + return; + } + enabled = newEnabled; + + /** + * An event that fires when enabled changes on this track. This allows + * the AudioTrackList that holds this track to act accordingly. + * + * > Note: This is not part of the spec! Native tracks will do + * this internally without an event. + * + * @event AudioTrack#enabledchange + * @type {EventTarget~Event} + */ + this.trigger('enabledchange'); + } + }); + + // if the user sets this track to selected then + // set selected to that true value otherwise + // we keep it false + if (settings.enabled) { + _this.enabled = settings.enabled; + } + _this.loaded_ = true; + return _this; + } + + return AudioTrack; + }(Track); + + /** + * A representation of a single `VideoTrack`. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack} + * @extends Track + */ + + var VideoTrack = function (_Track) { + inherits(VideoTrack, _Track); + + /** + * Create an instance of this class. + * + * @param {Object} [options={}] + * Object of option names and values + * + * @param {string} [options.kind=''] + * A valid {@link VideoTrack~Kind} + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this AudioTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {boolean} [options.selected] + * If this track is the one that is currently playing. + */ + function VideoTrack() { + var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + classCallCheck(this, VideoTrack); + + var settings = mergeOptions(options, { + kind: VideoTrackKind[options.kind] || '' + }); + + var _this = possibleConstructorReturn(this, _Track.call(this, settings)); + + var selected = false; + + /** + * @memberof VideoTrack + * @member {boolean} selected + * If this `VideoTrack` is selected or not. When setting this will + * fire {@link VideoTrack#selectedchange} if the state of selected changed. + * @instance + * + * @fires VideoTrack#selectedchange + */ + Object.defineProperty(_this, 'selected', { + get: function get$$1() { + return selected; + }, + set: function set$$1(newSelected) { + // an invalid or unchanged value + if (typeof newSelected !== 'boolean' || newSelected === selected) { + return; + } + selected = newSelected; + + /** + * An event that fires when selected changes on this track. This allows + * the VideoTrackList that holds this track to act accordingly. + * + * > Note: This is not part of the spec! Native tracks will do + * this internally without an event. + * + * @event VideoTrack#selectedchange + * @type {EventTarget~Event} + */ + this.trigger('selectedchange'); + } + }); + + // if the user sets this track to selected then + // set selected to that true value otherwise + // we keep it false + if (settings.selected) { + _this.selected = settings.selected; + } + return _this; + } + + return VideoTrack; + }(Track); + + /** + * @file html-track-element.js + */ + + /** + * @memberof HTMLTrackElement + * @typedef {HTMLTrackElement~ReadyState} + * @enum {number} + */ + var NONE = 0; + var LOADING = 1; + var LOADED = 2; + var ERROR = 3; + + /** + * A single track represented in the DOM. + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement} + * @extends EventTarget + */ + + var HTMLTrackElement = function (_EventTarget) { + inherits(HTMLTrackElement, _EventTarget); + + /** + * Create an instance of this class. + * + * @param {Object} options={} + * Object of option names and values + * + * @param {Tech} options.tech + * A reference to the tech that owns this HTMLTrackElement. + * + * @param {TextTrack~Kind} [options.kind='subtitles'] + * A valid text track kind. + * + * @param {TextTrack~Mode} [options.mode='disabled'] + * A valid text track mode. + * + * @param {string} [options.id='vjs_track_' + Guid.newGUID()] + * A unique id for this TextTrack. + * + * @param {string} [options.label=''] + * The menu label for this track. + * + * @param {string} [options.language=''] + * A valid two character language code. + * + * @param {string} [options.srclang=''] + * A valid two character language code. An alternative, but deprioritized + * vesion of `options.language` + * + * @param {string} [options.src] + * A url to TextTrack cues. + * + * @param {boolean} [options.default] + * If this track should default to on or off. + */ + function HTMLTrackElement() { + var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + classCallCheck(this, HTMLTrackElement); + + var _this = possibleConstructorReturn(this, _EventTarget.call(this)); + + var readyState = void 0; + + var track = new TextTrack(options); + + _this.kind = track.kind; + _this.src = track.src; + _this.srclang = track.language; + _this.label = track.label; + _this.default = track.default; + + Object.defineProperties(_this, { + + /** + * @memberof HTMLTrackElement + * @member {HTMLTrackElement~ReadyState} readyState + * The current ready state of the track element. + * @instance + */ + readyState: { + get: function get$$1() { + return readyState; + } + }, + + /** + * @memberof HTMLTrackElement + * @member {TextTrack} track + * The underlying TextTrack object. + * @instance + * + */ + track: { + get: function get$$1() { + return track; + } + } + }); + + readyState = NONE; + + /** + * @listens TextTrack#loadeddata + * @fires HTMLTrackElement#load + */ + track.addEventListener('loadeddata', function () { + readyState = LOADED; + + _this.trigger({ + type: 'load', + target: _this + }); + }); + return _this; + } + + return HTMLTrackElement; + }(EventTarget); + + HTMLTrackElement.prototype.allowedEvents_ = { + load: 'load' + }; + + HTMLTrackElement.NONE = NONE; + HTMLTrackElement.LOADING = LOADING; + HTMLTrackElement.LOADED = LOADED; + HTMLTrackElement.ERROR = ERROR; + + /* + * This file contains all track properties that are used in + * player.js, tech.js, html5.js and possibly other techs in the future. + */ + + var NORMAL = { + audio: { + ListClass: AudioTrackList, + TrackClass: AudioTrack, + capitalName: 'Audio' + }, + video: { + ListClass: VideoTrackList, + TrackClass: VideoTrack, + capitalName: 'Video' + }, + text: { + ListClass: TextTrackList, + TrackClass: TextTrack, + capitalName: 'Text' + } + }; + + Object.keys(NORMAL).forEach(function (type) { + NORMAL[type].getterName = type + 'Tracks'; + NORMAL[type].privateName = type + 'Tracks_'; + }); + + var REMOTE = { + remoteText: { + ListClass: TextTrackList, + TrackClass: TextTrack, + capitalName: 'RemoteText', + getterName: 'remoteTextTracks', + privateName: 'remoteTextTracks_' + }, + remoteTextEl: { + ListClass: HtmlTrackElementList, + TrackClass: HTMLTrackElement, + capitalName: 'RemoteTextTrackEls', + getterName: 'remoteTextTrackEls', + privateName: 'remoteTextTrackEls_' + } + }; + + var ALL = mergeOptions(NORMAL, REMOTE); + + REMOTE.names = Object.keys(REMOTE); + NORMAL.names = Object.keys(NORMAL); + ALL.names = [].concat(REMOTE.names).concat(NORMAL.names); + + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ + /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ + var _objCreate = Object.create || function () { + function F() {} + return function (o) { + if (arguments.length !== 1) { + throw new Error('Object.create shim only accepts one parameter.'); + } + F.prototype = o; + return new F(); + }; + }(); + + // Creates a new ParserError object from an errorData object. The errorData + // object should have default code and message properties. The default message + // property can be overriden by passing in a message parameter. + // See ParsingError.Errors below for acceptable errors. + function ParsingError(errorData, message) { + this.name = "ParsingError"; + this.code = errorData.code; + this.message = message || errorData.message; + } + ParsingError.prototype = _objCreate(Error.prototype); + ParsingError.prototype.constructor = ParsingError; + + // ParsingError metadata for acceptable ParsingErrors. + ParsingError.Errors = { + BadSignature: { + code: 0, + message: "Malformed WebVTT signature." + }, + BadTimeStamp: { + code: 1, + message: "Malformed time stamp." + } + }; + + // Try to parse input as a time stamp. + function parseTimeStamp(input) { + + function computeSeconds(h, m, s, f) { + return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000; + } + + var m = input.match(/^(\d+):(\d{2})(:\d{2})?\.(\d{3})/); + if (!m) { + return null; + } + + if (m[3]) { + // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds] + return computeSeconds(m[1], m[2], m[3].replace(":", ""), m[4]); + } else if (m[1] > 59) { + // Timestamp takes the form of [hours]:[minutes].[milliseconds] + // First position is hours as it's over 59. + return computeSeconds(m[1], m[2], 0, m[4]); + } else { + // Timestamp takes the form of [minutes]:[seconds].[milliseconds] + return computeSeconds(0, m[1], m[2], m[4]); + } + } + + // A settings object holds key/value pairs and will ignore anything but the first + // assignment to a specific key. + function Settings() { + this.values = _objCreate(null); + } + + Settings.prototype = { + // Only accept the first assignment to any key. + set: function set(k, v) { + if (!this.get(k) && v !== "") { + this.values[k] = v; + } + }, + // Return the value for a key, or a default value. + // If 'defaultKey' is passed then 'dflt' is assumed to be an object with + // a number of possible default values as properties where 'defaultKey' is + // the key of the property that will be chosen; otherwise it's assumed to be + // a single value. + get: function get(k, dflt, defaultKey) { + if (defaultKey) { + return this.has(k) ? this.values[k] : dflt[defaultKey]; + } + return this.has(k) ? this.values[k] : dflt; + }, + // Check whether we have a value for a key. + has: function has(k) { + return k in this.values; + }, + // Accept a setting if its one of the given alternatives. + alt: function alt(k, v, a) { + for (var n = 0; n < a.length; ++n) { + if (v === a[n]) { + this.set(k, v); + break; + } + } + }, + // Accept a setting if its a valid (signed) integer. + integer: function integer(k, v) { + if (/^-?\d+$/.test(v)) { + // integer + this.set(k, parseInt(v, 10)); + } + }, + // Accept a setting if its a valid percentage. + percent: function percent(k, v) { + var m; + if (m = v.match(/^([\d]{1,3})(\.[\d]*)?%$/)) { + v = parseFloat(v); + if (v >= 0 && v <= 100) { + this.set(k, v); + return true; + } + } + return false; + } + }; + + // Helper function to parse input into groups separated by 'groupDelim', and + // interprete each group as a key/value pair separated by 'keyValueDelim'. + function parseOptions(input, callback, keyValueDelim, groupDelim) { + var groups = groupDelim ? input.split(groupDelim) : [input]; + for (var i in groups) { + if (typeof groups[i] !== "string") { + continue; + } + var kv = groups[i].split(keyValueDelim); + if (kv.length !== 2) { + continue; + } + var k = kv[0]; + var v = kv[1]; + callback(k, v); + } + } + + function parseCue(input, cue, regionList) { + // Remember the original input if we need to throw an error. + var oInput = input; + // 4.1 WebVTT timestamp + function consumeTimeStamp() { + var ts = parseTimeStamp(input); + if (ts === null) { + throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed timestamp: " + oInput); + } + // Remove time stamp from input. + input = input.replace(/^[^\sa-zA-Z-]+/, ""); + return ts; + } + + // 4.4.2 WebVTT cue settings + function consumeCueSettings(input, cue) { + var settings = new Settings(); + + parseOptions(input, function (k, v) { + switch (k) { + case "region": + // Find the last region we parsed with the same region id. + for (var i = regionList.length - 1; i >= 0; i--) { + if (regionList[i].id === v) { + settings.set(k, regionList[i].region); + break; + } + } + break; + case "vertical": + settings.alt(k, v, ["rl", "lr"]); + break; + case "line": + var vals = v.split(","), + vals0 = vals[0]; + settings.integer(k, vals0); + settings.percent(k, vals0) ? settings.set("snapToLines", false) : null; + settings.alt(k, vals0, ["auto"]); + if (vals.length === 2) { + settings.alt("lineAlign", vals[1], ["start", "middle", "end"]); + } + break; + case "position": + vals = v.split(","); + settings.percent(k, vals[0]); + if (vals.length === 2) { + settings.alt("positionAlign", vals[1], ["start", "middle", "end"]); + } + break; + case "size": + settings.percent(k, v); + break; + case "align": + settings.alt(k, v, ["start", "middle", "end", "left", "right"]); + break; + } + }, /:/, /\s/); + + // Apply default values for any missing fields. + cue.region = settings.get("region", null); + cue.vertical = settings.get("vertical", ""); + cue.line = settings.get("line", "auto"); + cue.lineAlign = settings.get("lineAlign", "start"); + cue.snapToLines = settings.get("snapToLines", true); + cue.size = settings.get("size", 100); + cue.align = settings.get("align", "middle"); + cue.position = settings.get("position", { + start: 0, + left: 0, + middle: 50, + end: 100, + right: 100 + }, cue.align); + cue.positionAlign = settings.get("positionAlign", { + start: "start", + left: "start", + middle: "middle", + end: "end", + right: "end" + }, cue.align); + } + + function skipWhitespace() { + input = input.replace(/^\s+/, ""); + } + + // 4.1 WebVTT cue timings. + skipWhitespace(); + cue.startTime = consumeTimeStamp(); // (1) collect cue start time + skipWhitespace(); + if (input.substr(0, 3) !== "-->") { + // (3) next characters must match "-->" + throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed time stamp (time stamps must be separated by '-->'): " + oInput); + } + input = input.substr(3); + skipWhitespace(); + cue.endTime = consumeTimeStamp(); // (5) collect cue end time + + // 4.1 WebVTT cue settings list. + skipWhitespace(); + consumeCueSettings(input, cue); + } + + var ESCAPE = { + "&": "&", + "<": "<", + ">": ">", + "‎": "\u200E", + "‏": "\u200F", + " ": "\xA0" + }; + + var TAG_NAME = { + c: "span", + i: "i", + b: "b", + u: "u", + ruby: "ruby", + rt: "rt", + v: "span", + lang: "span" + }; + + var TAG_ANNOTATION = { + v: "title", + lang: "lang" + }; + + var NEEDS_PARENT = { + rt: "ruby" + }; + + // Parse content into a document fragment. + function parseContent(window, input) { + function nextToken() { + // Check for end-of-string. + if (!input) { + return null; + } + + // Consume 'n' characters from the input. + function consume(result) { + input = input.substr(result.length); + return result; + } + + var m = input.match(/^([^<]*)(<[^>]*>?)?/); + // If there is some text before the next tag, return it, otherwise return + // the tag. + return consume(m[1] ? m[1] : m[2]); + } + + // Unescape a string 's'. + function unescape1(e) { + return ESCAPE[e]; + } + function unescape(s) { + while (m = s.match(/&(amp|lt|gt|lrm|rlm|nbsp);/)) { + s = s.replace(m[0], unescape1); + } + return s; + } + + function shouldAdd(current, element) { + return !NEEDS_PARENT[element.localName] || NEEDS_PARENT[element.localName] === current.localName; + } + + // Create an element for this tag. + function createElement(type, annotation) { + var tagName = TAG_NAME[type]; + if (!tagName) { + return null; + } + var element = window.document.createElement(tagName); + element.localName = tagName; + var name = TAG_ANNOTATION[type]; + if (name && annotation) { + element[name] = annotation.trim(); + } + return element; + } + + var rootDiv = window.document.createElement("div"), + current = rootDiv, + t, + tagStack = []; + + while ((t = nextToken()) !== null) { + if (t[0] === '<') { + if (t[1] === "/") { + // If the closing tag matches, move back up to the parent node. + if (tagStack.length && tagStack[tagStack.length - 1] === t.substr(2).replace(">", "")) { + tagStack.pop(); + current = current.parentNode; + } + // Otherwise just ignore the end tag. + continue; + } + var ts = parseTimeStamp(t.substr(1, t.length - 2)); + var node; + if (ts) { + // Timestamps are lead nodes as well. + node = window.document.createProcessingInstruction("timestamp", ts); + current.appendChild(node); + continue; + } + var m = t.match(/^<([^.\s/0-9>]+)(\.[^\s\\>]+)?([^>\\]+)?(\\?)>?$/); + // If we can't parse the tag, skip to the next tag. + if (!m) { + continue; + } + // Try to construct an element, and ignore the tag if we couldn't. + node = createElement(m[1], m[3]); + if (!node) { + continue; + } + // Determine if the tag should be added based on the context of where it + // is placed in the cuetext. + if (!shouldAdd(current, node)) { + continue; + } + // Set the class list (as a list of classes, separated by space). + if (m[2]) { + node.className = m[2].substr(1).replace('.', ' '); + } + // Append the node to the current node, and enter the scope of the new + // node. + tagStack.push(m[1]); + current.appendChild(node); + current = node; + continue; + } + + // Text nodes are leaf nodes. + current.appendChild(window.document.createTextNode(unescape(t))); + } + + return rootDiv; + } + + // This is a list of all the Unicode characters that have a strong + // right-to-left category. What this means is that these characters are + // written right-to-left for sure. It was generated by pulling all the strong + // right-to-left characters out of the Unicode data table. That table can + // found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt + var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6], [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d], [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6], [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5], [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815], [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858], [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f], [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c], [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1], [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc], [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808], [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855], [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f], [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13], [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58], [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72], [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f], [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32], [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42], [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f], [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59], [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62], [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77], [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b], [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]]; + + function isStrongRTLChar(charCode) { + for (var i = 0; i < strongRTLRanges.length; i++) { + var currentRange = strongRTLRanges[i]; + if (charCode >= currentRange[0] && charCode <= currentRange[1]) { + return true; + } + } + + return false; + } + + function determineBidi(cueDiv) { + var nodeStack = [], + text = "", + charCode; + + if (!cueDiv || !cueDiv.childNodes) { + return "ltr"; + } + + function pushNodes(nodeStack, node) { + for (var i = node.childNodes.length - 1; i >= 0; i--) { + nodeStack.push(node.childNodes[i]); + } + } + + function nextTextNode(nodeStack) { + if (!nodeStack || !nodeStack.length) { + return null; + } + + var node = nodeStack.pop(), + text = node.textContent || node.innerText; + if (text) { + // TODO: This should match all unicode type B characters (paragraph + // separator characters). See issue #115. + var m = text.match(/^.*(\n|\r)/); + if (m) { + nodeStack.length = 0; + return m[0]; + } + return text; + } + if (node.tagName === "ruby") { + return nextTextNode(nodeStack); + } + if (node.childNodes) { + pushNodes(nodeStack, node); + return nextTextNode(nodeStack); + } + } + + pushNodes(nodeStack, cueDiv); + while (text = nextTextNode(nodeStack)) { + for (var i = 0; i < text.length; i++) { + charCode = text.charCodeAt(i); + if (isStrongRTLChar(charCode)) { + return "rtl"; + } + } + } + return "ltr"; + } + + function computeLinePos(cue) { + if (typeof cue.line === "number" && (cue.snapToLines || cue.line >= 0 && cue.line <= 100)) { + return cue.line; + } + if (!cue.track || !cue.track.textTrackList || !cue.track.textTrackList.mediaElement) { + return -1; + } + var track = cue.track, + trackList = track.textTrackList, + count = 0; + for (var i = 0; i < trackList.length && trackList[i] !== track; i++) { + if (trackList[i].mode === "showing") { + count++; + } + } + return ++count * -1; + } + + function StyleBox() {} + + // Apply styles to a div. If there is no div passed then it defaults to the + // div on 'this'. + StyleBox.prototype.applyStyles = function (styles, div) { + div = div || this.div; + for (var prop in styles) { + if (styles.hasOwnProperty(prop)) { + div.style[prop] = styles[prop]; + } + } + }; + + StyleBox.prototype.formatStyle = function (val, unit) { + return val === 0 ? 0 : val + unit; + }; + + // Constructs the computed display state of the cue (a div). Places the div + // into the overlay which should be a block level element (usually a div). + function CueStyleBox(window, cue, styleOptions) { + StyleBox.call(this); + this.cue = cue; + + // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will + // have inline positioning and will function as the cue background box. + this.cueDiv = parseContent(window, cue.text); + var styles = { + color: "rgba(255, 255, 255, 1)", + backgroundColor: "rgba(0, 0, 0, 0.8)", + position: "relative", + left: 0, + right: 0, + top: 0, + bottom: 0, + display: "inline", + writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl", + unicodeBidi: "plaintext" + }; + + this.applyStyles(styles, this.cueDiv); + + // Create an absolutely positioned div that will be used to position the cue + // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS + // mirrors of them except "middle" which is "center" in CSS. + this.div = window.document.createElement("div"); + styles = { + direction: determineBidi(this.cueDiv), + writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl", + unicodeBidi: "plaintext", + textAlign: cue.align === "middle" ? "center" : cue.align, + font: styleOptions.font, + whiteSpace: "pre-line", + position: "absolute" + }; + + this.applyStyles(styles); + this.div.appendChild(this.cueDiv); + + // Calculate the distance from the reference edge of the viewport to the text + // position of the cue box. The reference edge will be resolved later when + // the box orientation styles are applied. + var textPos = 0; + switch (cue.positionAlign) { + case "start": + textPos = cue.position; + break; + case "middle": + textPos = cue.position - cue.size / 2; + break; + case "end": + textPos = cue.position - cue.size; + break; + } + + // Horizontal box orientation; textPos is the distance from the left edge of the + // area to the left edge of the box and cue.size is the distance extending to + // the right from there. + if (cue.vertical === "") { + this.applyStyles({ + left: this.formatStyle(textPos, "%"), + width: this.formatStyle(cue.size, "%") + }); + // Vertical box orientation; textPos is the distance from the top edge of the + // area to the top edge of the box and cue.size is the height extending + // downwards from there. + } else { + this.applyStyles({ + top: this.formatStyle(textPos, "%"), + height: this.formatStyle(cue.size, "%") + }); + } + + this.move = function (box) { + this.applyStyles({ + top: this.formatStyle(box.top, "px"), + bottom: this.formatStyle(box.bottom, "px"), + left: this.formatStyle(box.left, "px"), + right: this.formatStyle(box.right, "px"), + height: this.formatStyle(box.height, "px"), + width: this.formatStyle(box.width, "px") + }); + }; + } + CueStyleBox.prototype = _objCreate(StyleBox.prototype); + CueStyleBox.prototype.constructor = CueStyleBox; + + // Represents the co-ordinates of an Element in a way that we can easily + // compute things with such as if it overlaps or intersects with another Element. + // Can initialize it with either a StyleBox or another BoxPosition. + function BoxPosition(obj) { + // Either a BoxPosition was passed in and we need to copy it, or a StyleBox + // was passed in and we need to copy the results of 'getBoundingClientRect' + // as the object returned is readonly. All co-ordinate values are in reference + // to the viewport origin (top left). + var lh, height, width, top; + if (obj.div) { + height = obj.div.offsetHeight; + width = obj.div.offsetWidth; + top = obj.div.offsetTop; + + var rects = (rects = obj.div.childNodes) && (rects = rects[0]) && rects.getClientRects && rects.getClientRects(); + obj = obj.div.getBoundingClientRect(); + // In certain cases the outter div will be slightly larger then the sum of + // the inner div's lines. This could be due to bold text, etc, on some platforms. + // In this case we should get the average line height and use that. This will + // result in the desired behaviour. + lh = rects ? Math.max(rects[0] && rects[0].height || 0, obj.height / rects.length) : 0; + } + this.left = obj.left; + this.right = obj.right; + this.top = obj.top || top; + this.height = obj.height || height; + this.bottom = obj.bottom || top + (obj.height || height); + this.width = obj.width || width; + this.lineHeight = lh !== undefined ? lh : obj.lineHeight; + } + + // Move the box along a particular axis. Optionally pass in an amount to move + // the box. If no amount is passed then the default is the line height of the + // box. + BoxPosition.prototype.move = function (axis, toMove) { + toMove = toMove !== undefined ? toMove : this.lineHeight; + switch (axis) { + case "+x": + this.left += toMove; + this.right += toMove; + break; + case "-x": + this.left -= toMove; + this.right -= toMove; + break; + case "+y": + this.top += toMove; + this.bottom += toMove; + break; + case "-y": + this.top -= toMove; + this.bottom -= toMove; + break; + } + }; + + // Check if this box overlaps another box, b2. + BoxPosition.prototype.overlaps = function (b2) { + return this.left < b2.right && this.right > b2.left && this.top < b2.bottom && this.bottom > b2.top; + }; + + // Check if this box overlaps any other boxes in boxes. + BoxPosition.prototype.overlapsAny = function (boxes) { + for (var i = 0; i < boxes.length; i++) { + if (this.overlaps(boxes[i])) { + return true; + } + } + return false; + }; + + // Check if this box is within another box. + BoxPosition.prototype.within = function (container) { + return this.top >= container.top && this.bottom <= container.bottom && this.left >= container.left && this.right <= container.right; + }; + + // Check if this box is entirely within the container or it is overlapping + // on the edge opposite of the axis direction passed. For example, if "+x" is + // passed and the box is overlapping on the left edge of the container, then + // return true. + BoxPosition.prototype.overlapsOppositeAxis = function (container, axis) { + switch (axis) { + case "+x": + return this.left < container.left; + case "-x": + return this.right > container.right; + case "+y": + return this.top < container.top; + case "-y": + return this.bottom > container.bottom; + } + }; + + // Find the percentage of the area that this box is overlapping with another + // box. + BoxPosition.prototype.intersectPercentage = function (b2) { + var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)), + y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)), + intersectArea = x * y; + return intersectArea / (this.height * this.width); + }; + + // Convert the positions from this box to CSS compatible positions using + // the reference container's positions. This has to be done because this + // box's positions are in reference to the viewport origin, whereas, CSS + // values are in referecne to their respective edges. + BoxPosition.prototype.toCSSCompatValues = function (reference) { + return { + top: this.top - reference.top, + bottom: reference.bottom - this.bottom, + left: this.left - reference.left, + right: reference.right - this.right, + height: this.height, + width: this.width + }; + }; + + // Get an object that represents the box's position without anything extra. + // Can pass a StyleBox, HTMLElement, or another BoxPositon. + BoxPosition.getSimpleBoxPosition = function (obj) { + var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0; + var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0; + var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0; + + obj = obj.div ? obj.div.getBoundingClientRect() : obj.tagName ? obj.getBoundingClientRect() : obj; + var ret = { + left: obj.left, + right: obj.right, + top: obj.top || top, + height: obj.height || height, + bottom: obj.bottom || top + (obj.height || height), + width: obj.width || width + }; + return ret; + }; + + // Move a StyleBox to its specified, or next best, position. The containerBox + // is the box that contains the StyleBox, such as a div. boxPositions are + // a list of other boxes that the styleBox can't overlap with. + function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) { + + // Find the best position for a cue box, b, on the video. The axis parameter + // is a list of axis, the order of which, it will move the box along. For example: + // Passing ["+x", "-x"] will move the box first along the x axis in the positive + // direction. If it doesn't find a good position for it there it will then move + // it along the x axis in the negative direction. + function findBestPosition(b, axis) { + var bestPosition, + specifiedPosition = new BoxPosition(b), + percentage = 1; // Highest possible so the first thing we get is better. + + for (var i = 0; i < axis.length; i++) { + while (b.overlapsOppositeAxis(containerBox, axis[i]) || b.within(containerBox) && b.overlapsAny(boxPositions)) { + b.move(axis[i]); + } + // We found a spot where we aren't overlapping anything. This is our + // best position. + if (b.within(containerBox)) { + return b; + } + var p = b.intersectPercentage(containerBox); + // If we're outside the container box less then we were on our last try + // then remember this position as the best position. + if (percentage > p) { + bestPosition = new BoxPosition(b); + percentage = p; + } + // Reset the box position to the specified position. + b = new BoxPosition(specifiedPosition); + } + return bestPosition || specifiedPosition; + } + + var boxPosition = new BoxPosition(styleBox), + cue = styleBox.cue, + linePos = computeLinePos(cue), + axis = []; + + // If we have a line number to align the cue to. + if (cue.snapToLines) { + var size; + switch (cue.vertical) { + case "": + axis = ["+y", "-y"]; + size = "height"; + break; + case "rl": + axis = ["+x", "-x"]; + size = "width"; + break; + case "lr": + axis = ["-x", "+x"]; + size = "width"; + break; + } + + var step = boxPosition.lineHeight, + position = step * Math.round(linePos), + maxPosition = containerBox[size] + step, + initialAxis = axis[0]; + + // If the specified intial position is greater then the max position then + // clamp the box to the amount of steps it would take for the box to + // reach the max position. + if (Math.abs(position) > maxPosition) { + position = position < 0 ? -1 : 1; + position *= Math.ceil(maxPosition / step) * step; + } + + // If computed line position returns negative then line numbers are + // relative to the bottom of the video instead of the top. Therefore, we + // need to increase our initial position by the length or width of the + // video, depending on the writing direction, and reverse our axis directions. + if (linePos < 0) { + position += cue.vertical === "" ? containerBox.height : containerBox.width; + axis = axis.reverse(); + } + + // Move the box to the specified position. This may not be its best + // position. + boxPosition.move(initialAxis, position); + } else { + // If we have a percentage line value for the cue. + var calculatedPercentage = boxPosition.lineHeight / containerBox.height * 100; + + switch (cue.lineAlign) { + case "middle": + linePos -= calculatedPercentage / 2; + break; + case "end": + linePos -= calculatedPercentage; + break; + } + + // Apply initial line position to the cue box. + switch (cue.vertical) { + case "": + styleBox.applyStyles({ + top: styleBox.formatStyle(linePos, "%") + }); + break; + case "rl": + styleBox.applyStyles({ + left: styleBox.formatStyle(linePos, "%") + }); + break; + case "lr": + styleBox.applyStyles({ + right: styleBox.formatStyle(linePos, "%") + }); + break; + } + + axis = ["+y", "-x", "+x", "-y"]; + + // Get the box position again after we've applied the specified positioning + // to it. + boxPosition = new BoxPosition(styleBox); + } + + var bestPosition = findBestPosition(boxPosition, axis); + styleBox.move(bestPosition.toCSSCompatValues(containerBox)); + } + + function WebVTT$1() {} + // Nothing + + + // Helper to allow strings to be decoded instead of the default binary utf8 data. + WebVTT$1.StringDecoder = function () { + return { + decode: function decode(data) { + if (!data) { + return ""; + } + if (typeof data !== "string") { + throw new Error("Error - expected string data."); + } + return decodeURIComponent(encodeURIComponent(data)); + } + }; + }; + + WebVTT$1.convertCueToDOMTree = function (window, cuetext) { + if (!window || !cuetext) { + return null; + } + return parseContent(window, cuetext); + }; + + var FONT_SIZE_PERCENT = 0.05; + var FONT_STYLE = "sans-serif"; + var CUE_BACKGROUND_PADDING = "1.5%"; + + // Runs the processing model over the cues and regions passed to it. + // @param overlay A block level element (usually a div) that the computed cues + // and regions will be placed into. + WebVTT$1.processCues = function (window, cues, overlay) { + if (!window || !cues || !overlay) { + return null; + } + + // Remove all previous children. + while (overlay.firstChild) { + overlay.removeChild(overlay.firstChild); + } + + var paddedOverlay = window.document.createElement("div"); + paddedOverlay.style.position = "absolute"; + paddedOverlay.style.left = "0"; + paddedOverlay.style.right = "0"; + paddedOverlay.style.top = "0"; + paddedOverlay.style.bottom = "0"; + paddedOverlay.style.margin = CUE_BACKGROUND_PADDING; + overlay.appendChild(paddedOverlay); + + // Determine if we need to compute the display states of the cues. This could + // be the case if a cue's state has been changed since the last computation or + // if it has not been computed yet. + function shouldCompute(cues) { + for (var i = 0; i < cues.length; i++) { + if (cues[i].hasBeenReset || !cues[i].displayState) { + return true; + } + } + return false; + } + + // We don't need to recompute the cues' display states. Just reuse them. + if (!shouldCompute(cues)) { + for (var i = 0; i < cues.length; i++) { + paddedOverlay.appendChild(cues[i].displayState); + } + return; + } + + var boxPositions = [], + containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay), + fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100; + var styleOptions = { + font: fontSize + "px " + FONT_STYLE + }; + + (function () { + var styleBox, cue; + + for (var i = 0; i < cues.length; i++) { + cue = cues[i]; + + // Compute the intial position and styles of the cue div. + styleBox = new CueStyleBox(window, cue, styleOptions); + paddedOverlay.appendChild(styleBox.div); + + // Move the cue div to it's correct line position. + moveBoxToLinePosition(window, styleBox, containerBox, boxPositions); + + // Remember the computed div so that we don't have to recompute it later + // if we don't have too. + cue.displayState = styleBox.div; + + boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox)); + } + })(); + }; + + WebVTT$1.Parser = function (window, vttjs, decoder) { + if (!decoder) { + decoder = vttjs; + vttjs = {}; + } + if (!vttjs) { + vttjs = {}; + } + + this.window = window; + this.vttjs = vttjs; + this.state = "INITIAL"; + this.buffer = ""; + this.decoder = decoder || new TextDecoder("utf8"); + this.regionList = []; + }; + + WebVTT$1.Parser.prototype = { + // If the error is a ParsingError then report it to the consumer if + // possible. If it's not a ParsingError then throw it like normal. + reportOrThrowError: function reportOrThrowError(e) { + if (e instanceof ParsingError) { + this.onparsingerror && this.onparsingerror(e); + } else { + throw e; + } + }, + parse: function parse(data) { + var self = this; + + // If there is no data then we won't decode it, but will just try to parse + // whatever is in buffer already. This may occur in circumstances, for + // example when flush() is called. + if (data) { + // Try to decode the data that we received. + self.buffer += self.decoder.decode(data, { stream: true }); + } + + function collectNextLine() { + var buffer = self.buffer; + var pos = 0; + while (pos < buffer.length && buffer[pos] !== '\r' && buffer[pos] !== '\n') { + ++pos; + } + var line = buffer.substr(0, pos); + // Advance the buffer early in case we fail below. + if (buffer[pos] === '\r') { + ++pos; + } + if (buffer[pos] === '\n') { + ++pos; + } + self.buffer = buffer.substr(pos); + return line; + } + + // 3.4 WebVTT region and WebVTT region settings syntax + function parseRegion(input) { + var settings = new Settings(); + + parseOptions(input, function (k, v) { + switch (k) { + case "id": + settings.set(k, v); + break; + case "width": + settings.percent(k, v); + break; + case "lines": + settings.integer(k, v); + break; + case "regionanchor": + case "viewportanchor": + var xy = v.split(','); + if (xy.length !== 2) { + break; + } + // We have to make sure both x and y parse, so use a temporary + // settings object here. + var anchor = new Settings(); + anchor.percent("x", xy[0]); + anchor.percent("y", xy[1]); + if (!anchor.has("x") || !anchor.has("y")) { + break; + } + settings.set(k + "X", anchor.get("x")); + settings.set(k + "Y", anchor.get("y")); + break; + case "scroll": + settings.alt(k, v, ["up"]); + break; + } + }, /=/, /\s/); + + // Create the region, using default values for any values that were not + // specified. + if (settings.has("id")) { + var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)(); + region.width = settings.get("width", 100); + region.lines = settings.get("lines", 3); + region.regionAnchorX = settings.get("regionanchorX", 0); + region.regionAnchorY = settings.get("regionanchorY", 100); + region.viewportAnchorX = settings.get("viewportanchorX", 0); + region.viewportAnchorY = settings.get("viewportanchorY", 100); + region.scroll = settings.get("scroll", ""); + // Register the region. + self.onregion && self.onregion(region); + // Remember the VTTRegion for later in case we parse any VTTCues that + // reference it. + self.regionList.push({ + id: settings.get("id"), + region: region + }); + } + } + + // draft-pantos-http-live-streaming-20 + // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5 + // 3.5 WebVTT + function parseTimestampMap(input) { + var settings = new Settings(); + + parseOptions(input, function (k, v) { + switch (k) { + case "MPEGT": + settings.integer(k + 'S', v); + break; + case "LOCA": + settings.set(k + 'L', parseTimeStamp(v)); + break; + } + }, /[^\d]:/, /,/); + + self.ontimestampmap && self.ontimestampmap({ + "MPEGTS": settings.get("MPEGTS"), + "LOCAL": settings.get("LOCAL") + }); + } + + // 3.2 WebVTT metadata header syntax + function parseHeader(input) { + if (input.match(/X-TIMESTAMP-MAP/)) { + // This line contains HLS X-TIMESTAMP-MAP metadata + parseOptions(input, function (k, v) { + switch (k) { + case "X-TIMESTAMP-MAP": + parseTimestampMap(v); + break; + } + }, /=/); + } else { + parseOptions(input, function (k, v) { + switch (k) { + case "Region": + // 3.3 WebVTT region metadata header syntax + parseRegion(v); + break; + } + }, /:/); + } + } + + // 5.1 WebVTT file parsing. + try { + var line; + if (self.state === "INITIAL") { + // We can't start parsing until we have the first line. + if (!/\r\n|\n/.test(self.buffer)) { + return this; + } + + line = collectNextLine(); + + var m = line.match(/^WEBVTT([ \t].*)?$/); + if (!m || !m[0]) { + throw new ParsingError(ParsingError.Errors.BadSignature); + } + + self.state = "HEADER"; + } + + var alreadyCollectedLine = false; + while (self.buffer) { + // We can't parse a line until we have the full line. + if (!/\r\n|\n/.test(self.buffer)) { + return this; + } + + if (!alreadyCollectedLine) { + line = collectNextLine(); + } else { + alreadyCollectedLine = false; + } + + switch (self.state) { + case "HEADER": + // 13-18 - Allow a header (metadata) under the WEBVTT line. + if (/:/.test(line)) { + parseHeader(line); + } else if (!line) { + // An empty line terminates the header and starts the body (cues). + self.state = "ID"; + } + continue; + case "NOTE": + // Ignore NOTE blocks. + if (!line) { + self.state = "ID"; + } + continue; + case "ID": + // Check for the start of NOTE blocks. + if (/^NOTE($|[ \t])/.test(line)) { + self.state = "NOTE"; + break; + } + // 19-29 - Allow any number of line terminators, then initialize new cue values. + if (!line) { + continue; + } + self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, ""); + self.state = "CUE"; + // 30-39 - Check if self line contains an optional identifier or timing data. + if (line.indexOf("-->") === -1) { + self.cue.id = line; + continue; + } + // Process line as start of a cue. + /*falls through*/ + case "CUE": + // 40 - Collect cue timings and settings. + try { + parseCue(line, self.cue, self.regionList); + } catch (e) { + self.reportOrThrowError(e); + // In case of an error ignore rest of the cue. + self.cue = null; + self.state = "BADCUE"; + continue; + } + self.state = "CUETEXT"; + continue; + case "CUETEXT": + var hasSubstring = line.indexOf("-->") !== -1; + // 34 - If we have an empty line then report the cue. + // 35 - If we have the special substring '-->' then report the cue, + // but do not collect the line as we need to process the current + // one as a new cue. + if (!line || hasSubstring && (alreadyCollectedLine = true)) { + // We are done parsing self cue. + self.oncue && self.oncue(self.cue); + self.cue = null; + self.state = "ID"; + continue; + } + if (self.cue.text) { + self.cue.text += "\n"; + } + self.cue.text += line; + continue; + case "BADCUE": + // BADCUE + // 54-62 - Collect and discard the remaining cue. + if (!line) { + self.state = "ID"; + } + continue; + } + } + } catch (e) { + self.reportOrThrowError(e); + + // If we are currently parsing a cue, report what we have. + if (self.state === "CUETEXT" && self.cue && self.oncue) { + self.oncue(self.cue); + } + self.cue = null; + // Enter BADWEBVTT state if header was not parsed correctly otherwise + // another exception occurred so enter BADCUE state. + self.state = self.state === "INITIAL" ? "BADWEBVTT" : "BADCUE"; + } + return this; + }, + flush: function flush() { + var self = this; + try { + // Finish decoding the stream. + self.buffer += self.decoder.decode(); + // Synthesize the end of the current cue or region. + if (self.cue || self.state === "HEADER") { + self.buffer += "\n\n"; + self.parse(); + } + // If we've flushed, parsed, and we're still on the INITIAL state then + // that means we don't have enough of the stream to parse the first + // line. + if (self.state === "INITIAL") { + throw new ParsingError(ParsingError.Errors.BadSignature); + } + } catch (e) { + self.reportOrThrowError(e); + } + self.onflush && self.onflush(); + return this; + } + }; + + var vtt = WebVTT$1; + + var vtt$1 = /*#__PURE__*/Object.freeze({ + default: vtt, + __moduleExports: vtt + }); + + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + var autoKeyword = "auto"; + var directionSetting = { + "": 1, + "lr": 1, + "rl": 1 + }; + var alignSetting = { + "start": 1, + "middle": 1, + "end": 1, + "left": 1, + "right": 1 + }; + + function findDirectionSetting(value) { + if (typeof value !== "string") { + return false; + } + var dir = directionSetting[value.toLowerCase()]; + return dir ? value.toLowerCase() : false; + } + + function findAlignSetting(value) { + if (typeof value !== "string") { + return false; + } + var align = alignSetting[value.toLowerCase()]; + return align ? value.toLowerCase() : false; + } + + function VTTCue(startTime, endTime, text) { + /** + * Shim implementation specific properties. These properties are not in + * the spec. + */ + + // Lets us know when the VTTCue's data has changed in such a way that we need + // to recompute its display state. This lets us compute its display state + // lazily. + this.hasBeenReset = false; + + /** + * VTTCue and TextTrackCue properties + * http://dev.w3.org/html5/webvtt/#vttcue-interface + */ + + var _id = ""; + var _pauseOnExit = false; + var _startTime = startTime; + var _endTime = endTime; + var _text = text; + var _region = null; + var _vertical = ""; + var _snapToLines = true; + var _line = "auto"; + var _lineAlign = "start"; + var _position = 50; + var _positionAlign = "middle"; + var _size = 50; + var _align = "middle"; + + Object.defineProperties(this, { + "id": { + enumerable: true, + get: function get() { + return _id; + }, + set: function set(value) { + _id = "" + value; + } + }, + + "pauseOnExit": { + enumerable: true, + get: function get() { + return _pauseOnExit; + }, + set: function set(value) { + _pauseOnExit = !!value; + } + }, + + "startTime": { + enumerable: true, + get: function get() { + return _startTime; + }, + set: function set(value) { + if (typeof value !== "number") { + throw new TypeError("Start time must be set to a number."); + } + _startTime = value; + this.hasBeenReset = true; + } + }, + + "endTime": { + enumerable: true, + get: function get() { + return _endTime; + }, + set: function set(value) { + if (typeof value !== "number") { + throw new TypeError("End time must be set to a number."); + } + _endTime = value; + this.hasBeenReset = true; + } + }, + + "text": { + enumerable: true, + get: function get() { + return _text; + }, + set: function set(value) { + _text = "" + value; + this.hasBeenReset = true; + } + }, + + "region": { + enumerable: true, + get: function get() { + return _region; + }, + set: function set(value) { + _region = value; + this.hasBeenReset = true; + } + }, + + "vertical": { + enumerable: true, + get: function get() { + return _vertical; + }, + set: function set(value) { + var setting = findDirectionSetting(value); + // Have to check for false because the setting an be an empty string. + if (setting === false) { + throw new SyntaxError("An invalid or illegal string was specified."); + } + _vertical = setting; + this.hasBeenReset = true; + } + }, + + "snapToLines": { + enumerable: true, + get: function get() { + return _snapToLines; + }, + set: function set(value) { + _snapToLines = !!value; + this.hasBeenReset = true; + } + }, + + "line": { + enumerable: true, + get: function get() { + return _line; + }, + set: function set(value) { + if (typeof value !== "number" && value !== autoKeyword) { + throw new SyntaxError("An invalid number or illegal string was specified."); + } + _line = value; + this.hasBeenReset = true; + } + }, + + "lineAlign": { + enumerable: true, + get: function get() { + return _lineAlign; + }, + set: function set(value) { + var setting = findAlignSetting(value); + if (!setting) { + throw new SyntaxError("An invalid or illegal string was specified."); + } + _lineAlign = setting; + this.hasBeenReset = true; + } + }, + + "position": { + enumerable: true, + get: function get() { + return _position; + }, + set: function set(value) { + if (value < 0 || value > 100) { + throw new Error("Position must be between 0 and 100."); + } + _position = value; + this.hasBeenReset = true; + } + }, + + "positionAlign": { + enumerable: true, + get: function get() { + return _positionAlign; + }, + set: function set(value) { + var setting = findAlignSetting(value); + if (!setting) { + throw new SyntaxError("An invalid or illegal string was specified."); + } + _positionAlign = setting; + this.hasBeenReset = true; + } + }, + + "size": { + enumerable: true, + get: function get() { + return _size; + }, + set: function set(value) { + if (value < 0 || value > 100) { + throw new Error("Size must be between 0 and 100."); + } + _size = value; + this.hasBeenReset = true; + } + }, + + "align": { + enumerable: true, + get: function get() { + return _align; + }, + set: function set(value) { + var setting = findAlignSetting(value); + if (!setting) { + throw new SyntaxError("An invalid or illegal string was specified."); + } + _align = setting; + this.hasBeenReset = true; + } + } + }); + + /** + * Other <track> spec defined properties + */ + + // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state + this.displayState = undefined; + } + + /** + * VTTCue methods + */ + + VTTCue.prototype.getCueAsHTML = function () { + // Assume WebVTT.convertCueToDOMTree is on the global. + return WebVTT.convertCueToDOMTree(window, this.text); + }; + + var vttcue = VTTCue; + + var vttcue$1 = /*#__PURE__*/Object.freeze({ + default: vttcue, + __moduleExports: vttcue + }); + + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + var scrollSetting = { + "": true, + "up": true + }; + + function findScrollSetting(value) { + if (typeof value !== "string") { + return false; + } + var scroll = scrollSetting[value.toLowerCase()]; + return scroll ? value.toLowerCase() : false; + } + + function isValidPercentValue(value) { + return typeof value === "number" && value >= 0 && value <= 100; + } + + // VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface + function VTTRegion() { + var _width = 100; + var _lines = 3; + var _regionAnchorX = 0; + var _regionAnchorY = 100; + var _viewportAnchorX = 0; + var _viewportAnchorY = 100; + var _scroll = ""; + + Object.defineProperties(this, { + "width": { + enumerable: true, + get: function get() { + return _width; + }, + set: function set(value) { + if (!isValidPercentValue(value)) { + throw new Error("Width must be between 0 and 100."); + } + _width = value; + } + }, + "lines": { + enumerable: true, + get: function get() { + return _lines; + }, + set: function set(value) { + if (typeof value !== "number") { + throw new TypeError("Lines must be set to a number."); + } + _lines = value; + } + }, + "regionAnchorY": { + enumerable: true, + get: function get() { + return _regionAnchorY; + }, + set: function set(value) { + if (!isValidPercentValue(value)) { + throw new Error("RegionAnchorX must be between 0 and 100."); + } + _regionAnchorY = value; + } + }, + "regionAnchorX": { + enumerable: true, + get: function get() { + return _regionAnchorX; + }, + set: function set(value) { + if (!isValidPercentValue(value)) { + throw new Error("RegionAnchorY must be between 0 and 100."); + } + _regionAnchorX = value; + } + }, + "viewportAnchorY": { + enumerable: true, + get: function get() { + return _viewportAnchorY; + }, + set: function set(value) { + if (!isValidPercentValue(value)) { + throw new Error("ViewportAnchorY must be between 0 and 100."); + } + _viewportAnchorY = value; + } + }, + "viewportAnchorX": { + enumerable: true, + get: function get() { + return _viewportAnchorX; + }, + set: function set(value) { + if (!isValidPercentValue(value)) { + throw new Error("ViewportAnchorX must be between 0 and 100."); + } + _viewportAnchorX = value; + } + }, + "scroll": { + enumerable: true, + get: function get() { + return _scroll; + }, + set: function set(value) { + var setting = findScrollSetting(value); + // Have to check for false as an empty string is a legal value. + if (setting === false) { + throw new SyntaxError("An invalid or illegal string was specified."); + } + _scroll = setting; + } + } + }); + } + + var vttregion = VTTRegion; + + var vttregion$1 = /*#__PURE__*/Object.freeze({ + default: vttregion, + __moduleExports: vttregion + }); + + var require$$0 = ( vtt$1 && vtt ) || vtt$1; + + var require$$1 = ( vttcue$1 && vttcue ) || vttcue$1; + + var require$$2 = ( vttregion$1 && vttregion ) || vttregion$1; + + var browserIndex = createCommonjsModule(function (module) { + /** + * Copyright 2013 vtt.js Contributors + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + + // Default exports for Node. Export the extended versions of VTTCue and + // VTTRegion in Node since we likely want the capability to convert back and + // forth between JSON. If we don't then it's not that big of a deal since we're + // off browser. + + + var vttjs = module.exports = { + WebVTT: require$$0, + VTTCue: require$$1, + VTTRegion: require$$2 + }; + + window_1.vttjs = vttjs; + window_1.WebVTT = vttjs.WebVTT; + + var cueShim = vttjs.VTTCue; + var regionShim = vttjs.VTTRegion; + var nativeVTTCue = window_1.VTTCue; + var nativeVTTRegion = window_1.VTTRegion; + + vttjs.shim = function () { + window_1.VTTCue = cueShim; + window_1.VTTRegion = regionShim; + }; + + vttjs.restore = function () { + window_1.VTTCue = nativeVTTCue; + window_1.VTTRegion = nativeVTTRegion; + }; + + if (!window_1.VTTCue) { + vttjs.shim(); + } + }); + var browserIndex_1 = browserIndex.WebVTT; + var browserIndex_2 = browserIndex.VTTCue; + var browserIndex_3 = browserIndex.VTTRegion; + + /** + * @file tech.js + */ + + /** + * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string + * that just contains the src url alone. + * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};` + * `var SourceString = 'http://example.com/some-video.mp4';` + * + * @typedef {Object|string} Tech~SourceObject + * + * @property {string} src + * The url to the source + * + * @property {string} type + * The mime type of the source + */ + + /** + * A function used by {@link Tech} to create a new {@link TextTrack}. + * + * @private + * + * @param {Tech} self + * An instance of the Tech class. + * + * @param {string} kind + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata) + * + * @param {string} [label] + * Label to identify the text track + * + * @param {string} [language] + * Two letter language abbreviation + * + * @param {Object} [options={}] + * An object with additional text track options + * + * @return {TextTrack} + * The text track that was created. + */ + function createTrackHelper(self, kind, label, language) { + var options = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {}; + + var tracks = self.textTracks(); + + options.kind = kind; + + if (label) { + options.label = label; + } + if (language) { + options.language = language; + } + options.tech = self; + + var track = new ALL.text.TrackClass(options); + + tracks.addTrack(track); + + return track; + } + + /** + * This is the base class for media playback technology controllers, such as + * {@link Flash} and {@link HTML5} + * + * @extends Component + */ + + var Tech = function (_Component) { + inherits(Tech, _Component); + + /** + * Create an instance of this Tech. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} ready + * Callback function to call when the `HTML5` Tech is ready. + */ + function Tech() { + var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + var ready = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : function () {}; + classCallCheck(this, Tech); + + // we don't want the tech to report user activity automatically. + // This is done manually in addControlsListeners + options.reportTouchActivity = false; + + // keep track of whether the current source has played at all to + // implement a very limited played() + var _this = possibleConstructorReturn(this, _Component.call(this, null, options, ready)); + + _this.hasStarted_ = false; + _this.on('playing', function () { + this.hasStarted_ = true; + }); + _this.on('loadstart', function () { + this.hasStarted_ = false; + }); + + ALL.names.forEach(function (name) { + var props = ALL[name]; + + if (options && options[props.getterName]) { + _this[props.privateName] = options[props.getterName]; + } + }); + + // Manually track progress in cases where the browser/flash player doesn't report it. + if (!_this.featuresProgressEvents) { + _this.manualProgressOn(); + } + + // Manually track timeupdates in cases where the browser/flash player doesn't report it. + if (!_this.featuresTimeupdateEvents) { + _this.manualTimeUpdatesOn(); + } + + ['Text', 'Audio', 'Video'].forEach(function (track) { + if (options['native' + track + 'Tracks'] === false) { + _this['featuresNative' + track + 'Tracks'] = false; + } + }); + + if (options.nativeCaptions === false || options.nativeTextTracks === false) { + _this.featuresNativeTextTracks = false; + } else if (options.nativeCaptions === true || options.nativeTextTracks === true) { + _this.featuresNativeTextTracks = true; + } + + if (!_this.featuresNativeTextTracks) { + _this.emulateTextTracks(); + } + + _this.autoRemoteTextTracks_ = new ALL.text.ListClass(); + + _this.initTrackListeners(); + + // Turn on component tap events only if not using native controls + if (!options.nativeControlsForTouch) { + _this.emitTapEvents(); + } + + if (_this.constructor) { + _this.name_ = _this.constructor.name || 'Unknown Tech'; + } + return _this; + } + + /** + * A special function to trigger source set in a way that will allow player + * to re-trigger if the player or tech are not ready yet. + * + * @fires Tech#sourceset + * @param {string} src The source string at the time of the source changing. + */ + + + Tech.prototype.triggerSourceset = function triggerSourceset(src) { + var _this2 = this; + + if (!this.isReady_) { + // on initial ready we have to trigger source set + // 1ms after ready so that player can watch for it. + this.one('ready', function () { + return _this2.setTimeout(function () { + return _this2.triggerSourceset(src); + }, 1); + }); + } + + /** + * Fired when the source is set on the tech causing the media element + * to reload. + * + * @see {@link Player#event:sourceset} + * @event Tech#sourceset + * @type {EventTarget~Event} + */ + this.trigger({ + src: src, + type: 'sourceset' + }); + }; + + /* Fallbacks for unsupported event types + ================================================================================ */ + + /** + * Polyfill the `progress` event for browsers that don't support it natively. + * + * @see {@link Tech#trackProgress} + */ + + + Tech.prototype.manualProgressOn = function manualProgressOn() { + this.on('durationchange', this.onDurationChange); + + this.manualProgress = true; + + // Trigger progress watching when a source begins loading + this.one('ready', this.trackProgress); + }; + + /** + * Turn off the polyfill for `progress` events that was created in + * {@link Tech#manualProgressOn} + */ + + + Tech.prototype.manualProgressOff = function manualProgressOff() { + this.manualProgress = false; + this.stopTrackingProgress(); + + this.off('durationchange', this.onDurationChange); + }; + + /** + * This is used to trigger a `progress` event when the buffered percent changes. It + * sets an interval function that will be called every 500 milliseconds to check if the + * buffer end percent has changed. + * + * > This function is called by {@link Tech#manualProgressOn} + * + * @param {EventTarget~Event} event + * The `ready` event that caused this to run. + * + * @listens Tech#ready + * @fires Tech#progress + */ + + + Tech.prototype.trackProgress = function trackProgress(event) { + this.stopTrackingProgress(); + this.progressInterval = this.setInterval(bind(this, function () { + // Don't trigger unless buffered amount is greater than last time + + var numBufferedPercent = this.bufferedPercent(); + + if (this.bufferedPercent_ !== numBufferedPercent) { + /** + * See {@link Player#progress} + * + * @event Tech#progress + * @type {EventTarget~Event} + */ + this.trigger('progress'); + } + + this.bufferedPercent_ = numBufferedPercent; + + if (numBufferedPercent === 1) { + this.stopTrackingProgress(); + } + }), 500); + }; + + /** + * Update our internal duration on a `durationchange` event by calling + * {@link Tech#duration}. + * + * @param {EventTarget~Event} event + * The `durationchange` event that caused this to run. + * + * @listens Tech#durationchange + */ + + + Tech.prototype.onDurationChange = function onDurationChange(event) { + this.duration_ = this.duration(); + }; + + /** + * Get and create a `TimeRange` object for buffering. + * + * @return {TimeRange} + * The time range object that was created. + */ + + + Tech.prototype.buffered = function buffered() { + return createTimeRanges(0, 0); + }; + + /** + * Get the percentage of the current video that is currently buffered. + * + * @return {number} + * A number from 0 to 1 that represents the decimal percentage of the + * video that is buffered. + * + */ + + + Tech.prototype.bufferedPercent = function bufferedPercent$$1() { + return bufferedPercent(this.buffered(), this.duration_); + }; + + /** + * Turn off the polyfill for `progress` events that was created in + * {@link Tech#manualProgressOn} + * Stop manually tracking progress events by clearing the interval that was set in + * {@link Tech#trackProgress}. + */ + + + Tech.prototype.stopTrackingProgress = function stopTrackingProgress() { + this.clearInterval(this.progressInterval); + }; + + /** + * Polyfill the `timeupdate` event for browsers that don't support it. + * + * @see {@link Tech#trackCurrentTime} + */ + + + Tech.prototype.manualTimeUpdatesOn = function manualTimeUpdatesOn() { + this.manualTimeUpdates = true; + + this.on('play', this.trackCurrentTime); + this.on('pause', this.stopTrackingCurrentTime); + }; + + /** + * Turn off the polyfill for `timeupdate` events that was created in + * {@link Tech#manualTimeUpdatesOn} + */ + + + Tech.prototype.manualTimeUpdatesOff = function manualTimeUpdatesOff() { + this.manualTimeUpdates = false; + this.stopTrackingCurrentTime(); + this.off('play', this.trackCurrentTime); + this.off('pause', this.stopTrackingCurrentTime); + }; + + /** + * Sets up an interval function to track current time and trigger `timeupdate` every + * 250 milliseconds. + * + * @listens Tech#play + * @triggers Tech#timeupdate + */ + + + Tech.prototype.trackCurrentTime = function trackCurrentTime() { + if (this.currentTimeInterval) { + this.stopTrackingCurrentTime(); + } + this.currentTimeInterval = this.setInterval(function () { + /** + * Triggered at an interval of 250ms to indicated that time is passing in the video. + * + * @event Tech#timeupdate + * @type {EventTarget~Event} + */ + this.trigger({ type: 'timeupdate', target: this, manuallyTriggered: true }); + + // 42 = 24 fps // 250 is what Webkit uses // FF uses 15 + }, 250); + }; + + /** + * Stop the interval function created in {@link Tech#trackCurrentTime} so that the + * `timeupdate` event is no longer triggered. + * + * @listens {Tech#pause} + */ + + + Tech.prototype.stopTrackingCurrentTime = function stopTrackingCurrentTime() { + this.clearInterval(this.currentTimeInterval); + + // #1002 - if the video ends right before the next timeupdate would happen, + // the progress bar won't make it all the way to the end + this.trigger({ type: 'timeupdate', target: this, manuallyTriggered: true }); + }; + + /** + * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList}, + * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech. + * + * @fires Component#dispose + */ + + + Tech.prototype.dispose = function dispose() { + + // clear out all tracks because we can't reuse them between techs + this.clearTracks(NORMAL.names); + + // Turn off any manual progress or timeupdate tracking + if (this.manualProgress) { + this.manualProgressOff(); + } + + if (this.manualTimeUpdates) { + this.manualTimeUpdatesOff(); + } + + _Component.prototype.dispose.call(this); + }; + + /** + * Clear out a single `TrackList` or an array of `TrackLists` given their names. + * + * > Note: Techs without source handlers should call this between sources for `video` + * & `audio` tracks. You don't want to use them between tracks! + * + * @param {string[]|string} types + * TrackList names to clear, valid names are `video`, `audio`, and + * `text`. + */ + + + Tech.prototype.clearTracks = function clearTracks(types) { + var _this3 = this; + + types = [].concat(types); + // clear out all tracks because we can't reuse them between techs + types.forEach(function (type) { + var list = _this3[type + 'Tracks']() || []; + var i = list.length; + + while (i--) { + var track = list[i]; + + if (type === 'text') { + _this3.removeRemoteTextTrack(track); + } + list.removeTrack(track); + } + }); + }; + + /** + * Remove any TextTracks added via addRemoteTextTrack that are + * flagged for automatic garbage collection + */ + + + Tech.prototype.cleanupAutoTextTracks = function cleanupAutoTextTracks() { + var list = this.autoRemoteTextTracks_ || []; + var i = list.length; + + while (i--) { + var track = list[i]; + + this.removeRemoteTextTrack(track); + } + }; + + /** + * Reset the tech, which will removes all sources and reset the internal readyState. + * + * @abstract + */ + + + Tech.prototype.reset = function reset() {}; + + /** + * Get or set an error on the Tech. + * + * @param {MediaError} [err] + * Error to set on the Tech + * + * @return {MediaError|null} + * The current error object on the tech, or null if there isn't one. + */ + + + Tech.prototype.error = function error(err) { + if (err !== undefined) { + this.error_ = new MediaError(err); + this.trigger('error'); + } + return this.error_; + }; + + /** + * Returns the `TimeRange`s that have been played through for the current source. + * + * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`. + * It only checks whether the source has played at all or not. + * + * @return {TimeRange} + * - A single time range if this video has played + * - An empty set of ranges if not. + */ + + + Tech.prototype.played = function played() { + if (this.hasStarted_) { + return createTimeRanges(0, 0); + } + return createTimeRanges(); + }; + + /** + * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was + * previously called. + * + * @fires Tech#timeupdate + */ + + + Tech.prototype.setCurrentTime = function setCurrentTime() { + // improve the accuracy of manual timeupdates + if (this.manualTimeUpdates) { + /** + * A manual `timeupdate` event. + * + * @event Tech#timeupdate + * @type {EventTarget~Event} + */ + this.trigger({ type: 'timeupdate', target: this, manuallyTriggered: true }); + } + }; + + /** + * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and + * {@link TextTrackList} events. + * + * This adds {@link EventTarget~EventListeners} for `addtrack`, and `removetrack`. + * + * @fires Tech#audiotrackchange + * @fires Tech#videotrackchange + * @fires Tech#texttrackchange + */ + + + Tech.prototype.initTrackListeners = function initTrackListeners() { + var _this4 = this; + + /** + * Triggered when tracks are added or removed on the Tech {@link AudioTrackList} + * + * @event Tech#audiotrackchange + * @type {EventTarget~Event} + */ + + /** + * Triggered when tracks are added or removed on the Tech {@link VideoTrackList} + * + * @event Tech#videotrackchange + * @type {EventTarget~Event} + */ + + /** + * Triggered when tracks are added or removed on the Tech {@link TextTrackList} + * + * @event Tech#texttrackchange + * @type {EventTarget~Event} + */ + NORMAL.names.forEach(function (name) { + var props = NORMAL[name]; + var trackListChanges = function trackListChanges() { + _this4.trigger(name + 'trackchange'); + }; + + var tracks = _this4[props.getterName](); + + tracks.addEventListener('removetrack', trackListChanges); + tracks.addEventListener('addtrack', trackListChanges); + + _this4.on('dispose', function () { + tracks.removeEventListener('removetrack', trackListChanges); + tracks.removeEventListener('addtrack', trackListChanges); + }); + }); + }; + + /** + * Emulate TextTracks using vtt.js if necessary + * + * @fires Tech#vttjsloaded + * @fires Tech#vttjserror + */ + + + Tech.prototype.addWebVttScript_ = function addWebVttScript_() { + var _this5 = this; + + if (window_1.WebVTT) { + return; + } + + // Initially, Tech.el_ is a child of a dummy-div wait until the Component system + // signals that the Tech is ready at which point Tech.el_ is part of the DOM + // before inserting the WebVTT script + if (document_1.body.contains(this.el())) { + + // load via require if available and vtt.js script location was not passed in + // as an option. novtt builds will turn the above require call into an empty object + // which will cause this if check to always fail. + if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) { + this.trigger('vttjsloaded'); + return; + } + + // load vtt.js via the script location option or the cdn of no location was + // passed in + var script = document_1.createElement('script'); + + script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js'; + script.onload = function () { + /** + * Fired when vtt.js is loaded. + * + * @event Tech#vttjsloaded + * @type {EventTarget~Event} + */ + _this5.trigger('vttjsloaded'); + }; + script.onerror = function () { + /** + * Fired when vtt.js was not loaded due to an error + * + * @event Tech#vttjsloaded + * @type {EventTarget~Event} + */ + _this5.trigger('vttjserror'); + }; + this.on('dispose', function () { + script.onload = null; + script.onerror = null; + }); + // but have not loaded yet and we set it to true before the inject so that + // we don't overwrite the injected window.WebVTT if it loads right away + window_1.WebVTT = true; + this.el().parentNode.appendChild(script); + } else { + this.ready(this.addWebVttScript_); + } + }; + + /** + * Emulate texttracks + * + */ + + + Tech.prototype.emulateTextTracks = function emulateTextTracks() { + var _this6 = this; + + var tracks = this.textTracks(); + var remoteTracks = this.remoteTextTracks(); + var handleAddTrack = function handleAddTrack(e) { + return tracks.addTrack(e.track); + }; + var handleRemoveTrack = function handleRemoveTrack(e) { + return tracks.removeTrack(e.track); + }; + + remoteTracks.on('addtrack', handleAddTrack); + remoteTracks.on('removetrack', handleRemoveTrack); + + this.addWebVttScript_(); + + var updateDisplay = function updateDisplay() { + return _this6.trigger('texttrackchange'); + }; + + var textTracksChanges = function textTracksChanges() { + updateDisplay(); + + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + + track.removeEventListener('cuechange', updateDisplay); + if (track.mode === 'showing') { + track.addEventListener('cuechange', updateDisplay); + } + } + }; + + textTracksChanges(); + tracks.addEventListener('change', textTracksChanges); + tracks.addEventListener('addtrack', textTracksChanges); + tracks.addEventListener('removetrack', textTracksChanges); + + this.on('dispose', function () { + remoteTracks.off('addtrack', handleAddTrack); + remoteTracks.off('removetrack', handleRemoveTrack); + tracks.removeEventListener('change', textTracksChanges); + tracks.removeEventListener('addtrack', textTracksChanges); + tracks.removeEventListener('removetrack', textTracksChanges); + + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + + track.removeEventListener('cuechange', updateDisplay); + } + }); + }; + + /** + * Create and returns a remote {@link TextTrack} object. + * + * @param {string} kind + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata) + * + * @param {string} [label] + * Label to identify the text track + * + * @param {string} [language] + * Two letter language abbreviation + * + * @return {TextTrack} + * The TextTrack that gets created. + */ + + + Tech.prototype.addTextTrack = function addTextTrack(kind, label, language) { + if (!kind) { + throw new Error('TextTrack kind is required but was not provided'); + } + + return createTrackHelper(this, kind, label, language); + }; + + /** + * Create an emulated TextTrack for use by addRemoteTextTrack + * + * This is intended to be overridden by classes that inherit from + * Tech in order to create native or custom TextTracks. + * + * @param {Object} options + * The object should contain the options to initialize the TextTrack with. + * + * @param {string} [options.kind] + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata). + * + * @param {string} [options.label]. + * Label to identify the text track + * + * @param {string} [options.language] + * Two letter language abbreviation. + * + * @return {HTMLTrackElement} + * The track element that gets created. + */ + + + Tech.prototype.createRemoteTextTrack = function createRemoteTextTrack(options) { + var track = mergeOptions(options, { + tech: this + }); + + return new REMOTE.remoteTextEl.TrackClass(track); + }; + + /** + * Creates a remote text track object and returns an html track element. + * + * > Note: This can be an emulated {@link HTMLTrackElement} or a native one. + * + * @param {Object} options + * See {@link Tech#createRemoteTextTrack} for more detailed properties. + * + * @param {boolean} [manualCleanup=true] + * - When false: the TextTrack will be automatically removed from the video + * element whenever the source changes + * - When True: The TextTrack will have to be cleaned up manually + * + * @return {HTMLTrackElement} + * An Html Track Element. + * + * @deprecated The default functionality for this function will be equivalent + * to "manualCleanup=false" in the future. The manualCleanup parameter will + * also be removed. + */ + + + Tech.prototype.addRemoteTextTrack = function addRemoteTextTrack() { + var _this7 = this; + + var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + var manualCleanup = arguments[1]; + + var htmlTrackElement = this.createRemoteTextTrack(options); + + if (manualCleanup !== true && manualCleanup !== false) { + // deprecation warning + log$1.warn('Calling addRemoteTextTrack without explicitly setting the "manualCleanup" parameter to `true` is deprecated and default to `false` in future version of video.js'); + manualCleanup = true; + } + + // store HTMLTrackElement and TextTrack to remote list + this.remoteTextTrackEls().addTrackElement_(htmlTrackElement); + this.remoteTextTracks().addTrack(htmlTrackElement.track); + + if (manualCleanup !== true) { + // create the TextTrackList if it doesn't exist + this.ready(function () { + return _this7.autoRemoteTextTracks_.addTrack(htmlTrackElement.track); + }); + } + + return htmlTrackElement; + }; + + /** + * Remove a remote text track from the remote `TextTrackList`. + * + * @param {TextTrack} track + * `TextTrack` to remove from the `TextTrackList` + */ + + + Tech.prototype.removeRemoteTextTrack = function removeRemoteTextTrack(track) { + var trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track); + + // remove HTMLTrackElement and TextTrack from remote list + this.remoteTextTrackEls().removeTrackElement_(trackElement); + this.remoteTextTracks().removeTrack(track); + this.autoRemoteTextTracks_.removeTrack(track); + }; + + /** + * Gets available media playback quality metrics as specified by the W3C's Media + * Playback Quality API. + * + * @see [Spec]{@link https://wicg.github.io/media-playback-quality} + * + * @return {Object} + * An object with supported media playback quality metrics + * + * @abstract + */ + + + Tech.prototype.getVideoPlaybackQuality = function getVideoPlaybackQuality() { + return {}; + }; + + /** + * A method to set a poster from a `Tech`. + * + * @abstract + */ + + + Tech.prototype.setPoster = function setPoster() {}; + + /** + * A method to check for the presence of the 'playsinline' <video> attribute. + * + * @abstract + */ + + + Tech.prototype.playsinline = function playsinline() {}; + + /** + * A method to set or unset the 'playsinline' <video> attribute. + * + * @abstract + */ + + + Tech.prototype.setPlaysinline = function setPlaysinline() {}; + + /** + * Attempt to force override of native audio tracks. + * + * @param {Boolean} override - If set to true native audio will be overridden, + * otherwise native audio will potentially be used. + * + * @abstract + */ + + + Tech.prototype.overrideNativeAudioTracks = function overrideNativeAudioTracks() {}; + + /** + * Attempt to force override of native video tracks. + * + * @param {Boolean} override - If set to true native video will be overridden, + * otherwise native video will potentially be used. + * + * @abstract + */ + + + Tech.prototype.overrideNativeVideoTracks = function overrideNativeVideoTracks() {}; + + /* + * Check if the tech can support the given mime-type. + * + * The base tech does not support any type, but source handlers might + * overwrite this. + * + * @param {string} type + * The mimetype to check for support + * + * @return {string} + * 'probably', 'maybe', or empty string + * + * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType} + * + * @abstract + */ + + + Tech.prototype.canPlayType = function canPlayType() { + return ''; + }; + + /** + * Check if the type is supported by this tech. + * + * The base tech does not support any type, but source handlers might + * overwrite this. + * + * @param {string} type + * The media type to check + * @return {string} Returns the native video element's response + */ + + + Tech.canPlayType = function canPlayType() { + return ''; + }; + + /** + * Check if the tech can support the given source + * @param {Object} srcObj + * The source object + * @param {Object} options + * The options passed to the tech + * @return {string} 'probably', 'maybe', or '' (empty string) + */ + + + Tech.canPlaySource = function canPlaySource(srcObj, options) { + return Tech.canPlayType(srcObj.type); + }; + + /* + * Return whether the argument is a Tech or not. + * Can be passed either a Class like `Html5` or a instance like `player.tech_` + * + * @param {Object} component + * The item to check + * + * @return {boolean} + * Whether it is a tech or not + * - True if it is a tech + * - False if it is not + */ + + + Tech.isTech = function isTech(component) { + return component.prototype instanceof Tech || component instanceof Tech || component === Tech; + }; + + /** + * Registers a `Tech` into a shared list for videojs. + * + * @param {string} name + * Name of the `Tech` to register. + * + * @param {Object} tech + * The `Tech` class to register. + */ + + + Tech.registerTech = function registerTech(name, tech) { + if (!Tech.techs_) { + Tech.techs_ = {}; + } + + if (!Tech.isTech(tech)) { + throw new Error('Tech ' + name + ' must be a Tech'); + } + + if (!Tech.canPlayType) { + throw new Error('Techs must have a static canPlayType method on them'); + } + if (!Tech.canPlaySource) { + throw new Error('Techs must have a static canPlaySource method on them'); + } + + name = toTitleCase(name); + + Tech.techs_[name] = tech; + if (name !== 'Tech') { + // camel case the techName for use in techOrder + Tech.defaultTechOrder_.push(name); + } + return tech; + }; + + /** + * Get a `Tech` from the shared list by name. + * + * @param {string} name + * `camelCase` or `TitleCase` name of the Tech to get + * + * @return {Tech|undefined} + * The `Tech` or undefined if there was no tech with the name requested. + */ + + + Tech.getTech = function getTech(name) { + if (!name) { + return; + } + + name = toTitleCase(name); + + if (Tech.techs_ && Tech.techs_[name]) { + return Tech.techs_[name]; + } + + if (window_1 && window_1.videojs && window_1.videojs[name]) { + log$1.warn('The ' + name + ' tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)'); + return window_1.videojs[name]; + } + }; + + return Tech; + }(Component); + + /** + * Get the {@link VideoTrackList} + * + * @returns {VideoTrackList} + * @method Tech.prototype.videoTracks + */ + + /** + * Get the {@link AudioTrackList} + * + * @returns {AudioTrackList} + * @method Tech.prototype.audioTracks + */ + + /** + * Get the {@link TextTrackList} + * + * @returns {TextTrackList} + * @method Tech.prototype.textTracks + */ + + /** + * Get the remote element {@link TextTrackList} + * + * @returns {TextTrackList} + * @method Tech.prototype.remoteTextTracks + */ + + /** + * Get the remote element {@link HtmlTrackElementList} + * + * @returns {HtmlTrackElementList} + * @method Tech.prototype.remoteTextTrackEls + */ + + ALL.names.forEach(function (name) { + var props = ALL[name]; + + Tech.prototype[props.getterName] = function () { + this[props.privateName] = this[props.privateName] || new props.ListClass(); + return this[props.privateName]; + }; + }); + + /** + * List of associated text tracks + * + * @type {TextTrackList} + * @private + * @property Tech#textTracks_ + */ + + /** + * List of associated audio tracks. + * + * @type {AudioTrackList} + * @private + * @property Tech#audioTracks_ + */ + + /** + * List of associated video tracks. + * + * @type {VideoTrackList} + * @private + * @property Tech#videoTracks_ + */ + + /** + * Boolean indicating whether the `Tech` supports volume control. + * + * @type {boolean} + * @default + */ + Tech.prototype.featuresVolumeControl = true; + + /** + * Boolean indicating whether the `Tech` supports muting volume. + * + * @type {bolean} + * @default + */ + Tech.prototype.featuresMuteControl = true; + + /** + * Boolean indicating whether the `Tech` supports fullscreen resize control. + * Resizing plugins using request fullscreen reloads the plugin + * + * @type {boolean} + * @default + */ + Tech.prototype.featuresFullscreenResize = false; + + /** + * Boolean indicating whether the `Tech` supports changing the speed at which the video + * plays. Examples: + * - Set player to play 2x (twice) as fast + * - Set player to play 0.5x (half) as fast + * + * @type {boolean} + * @default + */ + Tech.prototype.featuresPlaybackRate = false; + + /** + * Boolean indicating whether the `Tech` supports the `progress` event. This is currently + * not triggered by video-js-swf. This will be used to determine if + * {@link Tech#manualProgressOn} should be called. + * + * @type {boolean} + * @default + */ + Tech.prototype.featuresProgressEvents = false; + + /** + * Boolean indicating whether the `Tech` supports the `sourceset` event. + * + * A tech should set this to `true` and then use {@link Tech#triggerSourceset} + * to trigger a {@link Tech#event:sourceset} at the earliest time after getting + * a new source. + * + * @type {boolean} + * @default + */ + Tech.prototype.featuresSourceset = false; + + /** + * Boolean indicating whether the `Tech` supports the `timeupdate` event. This is currently + * not triggered by video-js-swf. This will be used to determine if + * {@link Tech#manualTimeUpdates} should be called. + * + * @type {boolean} + * @default + */ + Tech.prototype.featuresTimeupdateEvents = false; + + /** + * Boolean indicating whether the `Tech` supports the native `TextTrack`s. + * This will help us integrate with native `TextTrack`s if the browser supports them. + * + * @type {boolean} + * @default + */ + Tech.prototype.featuresNativeTextTracks = false; + + /** + * A functional mixin for techs that want to use the Source Handler pattern. + * Source handlers are scripts for handling specific formats. + * The source handler pattern is used for adaptive formats (HLS, DASH) that + * manually load video data and feed it into a Source Buffer (Media Source Extensions) + * Example: `Tech.withSourceHandlers.call(MyTech);` + * + * @param {Tech} _Tech + * The tech to add source handler functions to. + * + * @mixes Tech~SourceHandlerAdditions + */ + Tech.withSourceHandlers = function (_Tech) { + + /** + * Register a source handler + * + * @param {Function} handler + * The source handler class + * + * @param {number} [index] + * Register it at the following index + */ + _Tech.registerSourceHandler = function (handler, index) { + var handlers = _Tech.sourceHandlers; + + if (!handlers) { + handlers = _Tech.sourceHandlers = []; + } + + if (index === undefined) { + // add to the end of the list + index = handlers.length; + } + + handlers.splice(index, 0, handler); + }; + + /** + * Check if the tech can support the given type. Also checks the + * Techs sourceHandlers. + * + * @param {string} type + * The mimetype to check. + * + * @return {string} + * 'probably', 'maybe', or '' (empty string) + */ + _Tech.canPlayType = function (type) { + var handlers = _Tech.sourceHandlers || []; + var can = void 0; + + for (var i = 0; i < handlers.length; i++) { + can = handlers[i].canPlayType(type); + + if (can) { + return can; + } + } + + return ''; + }; + + /** + * Returns the first source handler that supports the source. + * + * TODO: Answer question: should 'probably' be prioritized over 'maybe' + * + * @param {Tech~SourceObject} source + * The source object + * + * @param {Object} options + * The options passed to the tech + * + * @return {SourceHandler|null} + * The first source handler that supports the source or null if + * no SourceHandler supports the source + */ + _Tech.selectSourceHandler = function (source, options) { + var handlers = _Tech.sourceHandlers || []; + var can = void 0; + + for (var i = 0; i < handlers.length; i++) { + can = handlers[i].canHandleSource(source, options); + if (can) { + return handlers[i]; + } + } + + return null; + }; + + /** + * Check if the tech can support the given source. + * + * @param {Tech~SourceObject} srcObj + * The source object + * + * @param {Object} options + * The options passed to the tech + * + * @return {string} + * 'probably', 'maybe', or '' (empty string) + */ + _Tech.canPlaySource = function (srcObj, options) { + var sh = _Tech.selectSourceHandler(srcObj, options); + + if (sh) { + return sh.canHandleSource(srcObj, options); + } + + return ''; + }; + + /** + * When using a source handler, prefer its implementation of + * any function normally provided by the tech. + */ + var deferrable = ['seekable', 'seeking', 'duration']; + + /** + * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable + * function if it exists, with a fallback to the Techs seekable function. + * + * @method _Tech.seekable + */ + + /** + * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration + * function if it exists, otherwise it will fallback to the techs duration function. + * + * @method _Tech.duration + */ + + deferrable.forEach(function (fnName) { + var originalFn = this[fnName]; + + if (typeof originalFn !== 'function') { + return; + } + + this[fnName] = function () { + if (this.sourceHandler_ && this.sourceHandler_[fnName]) { + return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments); + } + return originalFn.apply(this, arguments); + }; + }, _Tech.prototype); + + /** + * Create a function for setting the source using a source object + * and source handlers. + * Should never be called unless a source handler was found. + * + * @param {Tech~SourceObject} source + * A source object with src and type keys + */ + _Tech.prototype.setSource = function (source) { + var sh = _Tech.selectSourceHandler(source, this.options_); + + if (!sh) { + // Fall back to a native source hander when unsupported sources are + // deliberately set + if (_Tech.nativeSourceHandler) { + sh = _Tech.nativeSourceHandler; + } else { + log$1.error('No source handler found for the current source.'); + } + } + + // Dispose any existing source handler + this.disposeSourceHandler(); + this.off('dispose', this.disposeSourceHandler); + + if (sh !== _Tech.nativeSourceHandler) { + this.currentSource_ = source; + } + + this.sourceHandler_ = sh.handleSource(source, this, this.options_); + this.on('dispose', this.disposeSourceHandler); + }; + + /** + * Clean up any existing SourceHandlers and listeners when the Tech is disposed. + * + * @listens Tech#dispose + */ + _Tech.prototype.disposeSourceHandler = function () { + // if we have a source and get another one + // then we are loading something new + // than clear all of our current tracks + if (this.currentSource_) { + this.clearTracks(['audio', 'video']); + this.currentSource_ = null; + } + + // always clean up auto-text tracks + this.cleanupAutoTextTracks(); + + if (this.sourceHandler_) { + + if (this.sourceHandler_.dispose) { + this.sourceHandler_.dispose(); + } + + this.sourceHandler_ = null; + } + }; + }; + + // The base Tech class needs to be registered as a Component. It is the only + // Tech that can be registered as a Component. + Component.registerComponent('Tech', Tech); + Tech.registerTech('Tech', Tech); + + /** + * A list of techs that should be added to techOrder on Players + * + * @private + */ + Tech.defaultTechOrder_ = []; + + var middlewares = {}; + var middlewareInstances = {}; + + var TERMINATOR = {}; + + function use(type, middleware) { + middlewares[type] = middlewares[type] || []; + middlewares[type].push(middleware); + } + + function setSource(player, src, next) { + player.setTimeout(function () { + return setSourceHelper(src, middlewares[src.type], next, player); + }, 1); + } + + function setTech(middleware, tech) { + middleware.forEach(function (mw) { + return mw.setTech && mw.setTech(tech); + }); + } + + /** + * Calls a getter on the tech first, through each middleware + * from right to left to the player. + */ + function get$1(middleware, tech, method) { + return middleware.reduceRight(middlewareIterator(method), tech[method]()); + } + + /** + * Takes the argument given to the player and calls the setter method on each + * middleware from left to right to the tech. + */ + function set$1(middleware, tech, method, arg) { + return tech[method](middleware.reduce(middlewareIterator(method), arg)); + } + + /** + * Takes the argument given to the player and calls the `call` version of the method + * on each middleware from left to right. + * Then, call the passed in method on the tech and return the result unchanged + * back to the player, through middleware, this time from right to left. + */ + function mediate(middleware, tech, method) { + var arg = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null; + + var callMethod = 'call' + toTitleCase(method); + var middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg); + var terminated = middlewareValue === TERMINATOR; + var returnValue = terminated ? null : tech[method](middlewareValue); + + executeRight(middleware, method, returnValue, terminated); + + return returnValue; + } + + var allowedGetters = { + buffered: 1, + currentTime: 1, + duration: 1, + seekable: 1, + played: 1, + paused: 1 + }; + + var allowedSetters = { + setCurrentTime: 1 + }; + + var allowedMediators = { + play: 1, + pause: 1 + }; + + function middlewareIterator(method) { + return function (value, mw) { + // if the previous middleware terminated, pass along the termination + if (value === TERMINATOR) { + return TERMINATOR; + } + + if (mw[method]) { + return mw[method](value); + } + + return value; + }; + } + + function executeRight(mws, method, value, terminated) { + for (var i = mws.length - 1; i >= 0; i--) { + var mw = mws[i]; + + if (mw[method]) { + mw[method](terminated, value); + } + } + } + + function clearCacheForPlayer(player) { + middlewareInstances[player.id()] = null; + } + + /** + * { + * [playerId]: [[mwFactory, mwInstance], ...] + * } + */ + function getOrCreateFactory(player, mwFactory) { + var mws = middlewareInstances[player.id()]; + var mw = null; + + if (mws === undefined || mws === null) { + mw = mwFactory(player); + middlewareInstances[player.id()] = [[mwFactory, mw]]; + return mw; + } + + for (var i = 0; i < mws.length; i++) { + var _mws$i = mws[i], + mwf = _mws$i[0], + mwi = _mws$i[1]; + + + if (mwf !== mwFactory) { + continue; + } + + mw = mwi; + } + + if (mw === null) { + mw = mwFactory(player); + mws.push([mwFactory, mw]); + } + + return mw; + } + + function setSourceHelper() { + var src = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + var middleware = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : []; + var next = arguments[2]; + var player = arguments[3]; + var acc = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : []; + var lastRun = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : false; + var mwFactory = middleware[0], + mwrest = middleware.slice(1); + + // if mwFactory is a string, then we're at a fork in the road + + if (typeof mwFactory === 'string') { + setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun); + + // if we have an mwFactory, call it with the player to get the mw, + // then call the mw's setSource method + } else if (mwFactory) { + var mw = getOrCreateFactory(player, mwFactory); + + // if setSource isn't present, implicitly select this middleware + if (!mw.setSource) { + acc.push(mw); + return setSourceHelper(src, mwrest, next, player, acc, lastRun); + } + + mw.setSource(assign({}, src), function (err, _src) { + + // something happened, try the next middleware on the current level + // make sure to use the old src + if (err) { + return setSourceHelper(src, mwrest, next, player, acc, lastRun); + } + + // we've succeeded, now we need to go deeper + acc.push(mw); + + // if it's the same type, continue down the current chain + // otherwise, we want to go down the new chain + setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun); + }); + } else if (mwrest.length) { + setSourceHelper(src, mwrest, next, player, acc, lastRun); + } else if (lastRun) { + next(src, acc); + } else { + setSourceHelper(src, middlewares['*'], next, player, acc, true); + } + } + + /** + * Mimetypes + * + * @see http://hul.harvard.edu/ois/////systems/wax/wax-public-help/mimetypes.htm + * @typedef Mimetypes~Kind + * @enum + */ + var MimetypesKind = { + opus: 'video/ogg', + ogv: 'video/ogg', + mp4: 'video/mp4', + mov: 'video/mp4', + m4v: 'video/mp4', + mkv: 'video/x-matroska', + mp3: 'audio/mpeg', + aac: 'audio/aac', + oga: 'audio/ogg', + m3u8: 'application/x-mpegURL' + }; + + /** + * Get the mimetype of a given src url if possible + * + * @param {string} src + * The url to the src + * + * @return {string} + * return the mimetype if it was known or empty string otherwise + */ + var getMimetype = function getMimetype() { + var src = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ''; + + var ext = getFileExtension(src); + var mimetype = MimetypesKind[ext.toLowerCase()]; + + return mimetype || ''; + }; + + /** + * Find the mime type of a given source string if possible. Uses the player + * source cache. + * + * @param {Player} player + * The player object + * + * @param {string} src + * The source string + * + * @return {string} + * The type that was found + */ + var findMimetype = function findMimetype(player, src) { + if (!src) { + return ''; + } + + // 1. check for the type in the `source` cache + if (player.cache_.source.src === src && player.cache_.source.type) { + return player.cache_.source.type; + } + + // 2. see if we have this source in our `currentSources` cache + var matchingSources = player.cache_.sources.filter(function (s) { + return s.src === src; + }); + + if (matchingSources.length) { + return matchingSources[0].type; + } + + // 3. look for the src url in source elements and use the type there + var sources = player.$$('source'); + + for (var i = 0; i < sources.length; i++) { + var s = sources[i]; + + if (s.type && s.src && s.src === src) { + return s.type; + } + } + + // 4. finally fallback to our list of mime types based on src url extension + return getMimetype(src); + }; + + /** + * @module filter-source + */ + + /** + * Filter out single bad source objects or multiple source objects in an + * array. Also flattens nested source object arrays into a 1 dimensional + * array of source objects. + * + * @param {Tech~SourceObject|Tech~SourceObject[]} src + * The src object to filter + * + * @return {Tech~SourceObject[]} + * An array of sourceobjects containing only valid sources + * + * @private + */ + var filterSource = function filterSource(src) { + // traverse array + if (Array.isArray(src)) { + var newsrc = []; + + src.forEach(function (srcobj) { + srcobj = filterSource(srcobj); + + if (Array.isArray(srcobj)) { + newsrc = newsrc.concat(srcobj); + } else if (isObject(srcobj)) { + newsrc.push(srcobj); + } + }); + + src = newsrc; + } else if (typeof src === 'string' && src.trim()) { + // convert string into object + src = [fixSource({ src: src })]; + } else if (isObject(src) && typeof src.src === 'string' && src.src && src.src.trim()) { + // src is already valid + src = [fixSource(src)]; + } else { + // invalid source, turn it into an empty array + src = []; + } + + return src; + }; + + /** + * Checks src mimetype, adding it when possible + * + * @param {Tech~SourceObject} src + * The src object to check + * @return {Tech~SourceObject} + * src Object with known type + */ + function fixSource(src) { + var mimetype = getMimetype(src.src); + + if (!src.type && mimetype) { + src.type = mimetype; + } + + return src; + } + + /** + * @file loader.js + */ + + /** + * The `MediaLoader` is the `Component` that decides which playback technology to load + * when a player is initialized. + * + * @extends Component + */ + + var MediaLoader = function (_Component) { + inherits(MediaLoader, _Component); + + /** + * Create an instance of this class. + * + * @param {Player} player + * The `Player` that this class should attach to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} [ready] + * The function that is run when this component is ready. + */ + function MediaLoader(player, options, ready) { + classCallCheck(this, MediaLoader); + + // MediaLoader has no element + var options_ = mergeOptions({ createEl: false }, options); + + // If there are no sources when the player is initialized, + // load the first supported playback technology. + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options_, ready)); + + if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) { + for (var i = 0, j = options.playerOptions.techOrder; i < j.length; i++) { + var techName = toTitleCase(j[i]); + var tech = Tech.getTech(techName); + + // Support old behavior of techs being registered as components. + // Remove once that deprecated behavior is removed. + if (!techName) { + tech = Component.getComponent(techName); + } + + // Check if the browser supports this technology + if (tech && tech.isSupported()) { + player.loadTech_(techName); + break; + } + } + } else { + // Loop through playback technologies (HTML5, Flash) and check for support. + // Then load the best source. + // A few assumptions here: + // All playback technologies respect preload false. + player.src(options.playerOptions.sources); + } + return _this; + } + + return MediaLoader; + }(Component); + + Component.registerComponent('MediaLoader', MediaLoader); + + /** + * @file clickable-component.js + */ + + /** + * Clickable Component which is clickable or keyboard actionable, + * but is not a native HTML button. + * + * @extends Component + */ + + var ClickableComponent = function (_Component) { + inherits(ClickableComponent, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function ClickableComponent(player, options) { + classCallCheck(this, ClickableComponent); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.emitTapEvents(); + + _this.enable(); + return _this; + } + + /** + * Create the `Component`s DOM element. + * + * @param {string} [tag=div] + * The element's node type. + * + * @param {Object} [props={}] + * An object of properties that should be set on the element. + * + * @param {Object} [attributes={}] + * An object of attributes that should be set on the element. + * + * @return {Element} + * The element that gets created. + */ + + + ClickableComponent.prototype.createEl = function createEl$$1() { + var tag = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'div'; + var props = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; + + props = assign({ + innerHTML: '<span aria-hidden="true" class="vjs-icon-placeholder"></span>', + className: this.buildCSSClass(), + tabIndex: 0 + }, props); + + if (tag === 'button') { + log$1.error('Creating a ClickableComponent with an HTML element of ' + tag + ' is not supported; use a Button instead.'); + } + + // Add ARIA attributes for clickable element which is not a native HTML button + attributes = assign({ + role: 'button' + }, attributes); + + this.tabIndex_ = props.tabIndex; + + var el = _Component.prototype.createEl.call(this, tag, props, attributes); + + this.createControlTextEl(el); + + return el; + }; + + ClickableComponent.prototype.dispose = function dispose() { + // remove controlTextEl_ on dispose + this.controlTextEl_ = null; + + _Component.prototype.dispose.call(this); + }; + + /** + * Create a control text element on this `Component` + * + * @param {Element} [el] + * Parent element for the control text. + * + * @return {Element} + * The control text element that gets created. + */ + + + ClickableComponent.prototype.createControlTextEl = function createControlTextEl(el) { + this.controlTextEl_ = createEl('span', { + className: 'vjs-control-text' + }, { + // let the screen reader user know that the text of the element may change + 'aria-live': 'polite' + }); + + if (el) { + el.appendChild(this.controlTextEl_); + } + + this.controlText(this.controlText_, el); + + return this.controlTextEl_; + }; + + /** + * Get or set the localize text to use for the controls on the `Component`. + * + * @param {string} [text] + * Control text for element. + * + * @param {Element} [el=this.el()] + * Element to set the title on. + * + * @return {string} + * - The control text when getting + */ + + + ClickableComponent.prototype.controlText = function controlText(text) { + var el = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.el(); + + if (text === undefined) { + return this.controlText_ || 'Need Text'; + } + + var localizedText = this.localize(text); + + this.controlText_ = text; + textContent(this.controlTextEl_, localizedText); + if (!this.nonIconControl) { + // Set title attribute if only an icon is shown + el.setAttribute('title', localizedText); + } + }; + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + ClickableComponent.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-control vjs-button ' + _Component.prototype.buildCSSClass.call(this); + }; + + /** + * Enable this `Component`s element. + */ + + + ClickableComponent.prototype.enable = function enable() { + if (!this.enabled_) { + this.enabled_ = true; + this.removeClass('vjs-disabled'); + this.el_.setAttribute('aria-disabled', 'false'); + if (typeof this.tabIndex_ !== 'undefined') { + this.el_.setAttribute('tabIndex', this.tabIndex_); + } + this.on(['tap', 'click'], this.handleClick); + this.on('focus', this.handleFocus); + this.on('blur', this.handleBlur); + } + }; + + /** + * Disable this `Component`s element. + */ + + + ClickableComponent.prototype.disable = function disable() { + this.enabled_ = false; + this.addClass('vjs-disabled'); + this.el_.setAttribute('aria-disabled', 'true'); + if (typeof this.tabIndex_ !== 'undefined') { + this.el_.removeAttribute('tabIndex'); + } + this.off(['tap', 'click'], this.handleClick); + this.off('focus', this.handleFocus); + this.off('blur', this.handleBlur); + }; + + /** + * This gets called when a `ClickableComponent` gets: + * - Clicked (via the `click` event, listening starts in the constructor) + * - Tapped (via the `tap` event, listening starts in the constructor) + * - The following things happen in order: + * 1. {@link ClickableComponent#handleFocus} is called via a `focus` event on the + * `ClickableComponent`. + * 2. {@link ClickableComponent#handleFocus} adds a listener for `keydown` on using + * {@link ClickableComponent#handleKeyPress}. + * 3. `ClickableComponent` has not had a `blur` event (`blur` means that focus was lost). The user presses + * the space or enter key. + * 4. {@link ClickableComponent#handleKeyPress} calls this function with the `keydown` + * event as a parameter. + * + * @param {EventTarget~Event} event + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + * @abstract + */ + + + ClickableComponent.prototype.handleClick = function handleClick(event) {}; + + /** + * This gets called when a `ClickableComponent` gains focus via a `focus` event. + * Turns on listening for `keydown` events. When they happen it + * calls `this.handleKeyPress`. + * + * @param {EventTarget~Event} event + * The `focus` event that caused this function to be called. + * + * @listens focus + */ + + + ClickableComponent.prototype.handleFocus = function handleFocus(event) { + on(document_1, 'keydown', bind(this, this.handleKeyPress)); + }; + + /** + * Called when this ClickableComponent has focus and a key gets pressed down. By + * default it will call `this.handleClick` when the key is space or enter. + * + * @param {EventTarget~Event} event + * The `keydown` event that caused this function to be called. + * + * @listens keydown + */ + + + ClickableComponent.prototype.handleKeyPress = function handleKeyPress(event) { + + // Support Space (32) or Enter (13) key operation to fire a click event + if (event.which === 32 || event.which === 13) { + event.preventDefault(); + this.trigger('click'); + } else if (_Component.prototype.handleKeyPress) { + + // Pass keypress handling up for unsupported keys + _Component.prototype.handleKeyPress.call(this, event); + } + }; + + /** + * Called when a `ClickableComponent` loses focus. Turns off the listener for + * `keydown` events. Which Stops `this.handleKeyPress` from getting called. + * + * @param {EventTarget~Event} event + * The `blur` event that caused this function to be called. + * + * @listens blur + */ + + + ClickableComponent.prototype.handleBlur = function handleBlur(event) { + off(document_1, 'keydown', bind(this, this.handleKeyPress)); + }; + + return ClickableComponent; + }(Component); + + Component.registerComponent('ClickableComponent', ClickableComponent); + + /** + * @file poster-image.js + */ + + /** + * A `ClickableComponent` that handles showing the poster image for the player. + * + * @extends ClickableComponent + */ + + var PosterImage = function (_ClickableComponent) { + inherits(PosterImage, _ClickableComponent); + + /** + * Create an instance of this class. + * + * @param {Player} player + * The `Player` that this class should attach to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function PosterImage(player, options) { + classCallCheck(this, PosterImage); + + var _this = possibleConstructorReturn(this, _ClickableComponent.call(this, player, options)); + + _this.update(); + player.on('posterchange', bind(_this, _this.update)); + return _this; + } + + /** + * Clean up and dispose of the `PosterImage`. + */ + + + PosterImage.prototype.dispose = function dispose() { + this.player().off('posterchange', this.update); + _ClickableComponent.prototype.dispose.call(this); + }; + + /** + * Create the `PosterImage`s DOM element. + * + * @return {Element} + * The element that gets created. + */ + + + PosterImage.prototype.createEl = function createEl$$1() { + var el = createEl('div', { + className: 'vjs-poster', + + // Don't want poster to be tabbable. + tabIndex: -1 + }); + + return el; + }; + + /** + * An {@link EventTarget~EventListener} for {@link Player#posterchange} events. + * + * @listens Player#posterchange + * + * @param {EventTarget~Event} [event] + * The `Player#posterchange` event that triggered this function. + */ + + + PosterImage.prototype.update = function update(event) { + var url = this.player().poster(); + + this.setSrc(url); + + // If there's no poster source we should display:none on this component + // so it's not still clickable or right-clickable + if (url) { + this.show(); + } else { + this.hide(); + } + }; + + /** + * Set the source of the `PosterImage` depending on the display method. + * + * @param {string} url + * The URL to the source for the `PosterImage`. + */ + + + PosterImage.prototype.setSrc = function setSrc(url) { + var backgroundImage = ''; + + // Any falsy value should stay as an empty string, otherwise + // this will throw an extra error + if (url) { + backgroundImage = 'url("' + url + '")'; + } + + this.el_.style.backgroundImage = backgroundImage; + }; + + /** + * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See + * {@link ClickableComponent#handleClick} for instances where this will be triggered. + * + * @listens tap + * @listens click + * @listens keydown + * + * @param {EventTarget~Event} event + + The `click`, `tap` or `keydown` event that caused this function to be called. + */ + + + PosterImage.prototype.handleClick = function handleClick(event) { + // We don't want a click to trigger playback when controls are disabled + if (!this.player_.controls()) { + return; + } + + if (this.player_.paused()) { + silencePromise(this.player_.play()); + } else { + this.player_.pause(); + } + }; + + return PosterImage; + }(ClickableComponent); + + Component.registerComponent('PosterImage', PosterImage); + + /** + * @file text-track-display.js + */ + + var darkGray = '#222'; + var lightGray = '#ccc'; + var fontMap = { + monospace: 'monospace', + sansSerif: 'sans-serif', + serif: 'serif', + monospaceSansSerif: '"Andale Mono", "Lucida Console", monospace', + monospaceSerif: '"Courier New", monospace', + proportionalSansSerif: 'sans-serif', + proportionalSerif: 'serif', + casual: '"Comic Sans MS", Impact, fantasy', + script: '"Monotype Corsiva", cursive', + smallcaps: '"Andale Mono", "Lucida Console", monospace, sans-serif' + }; + + /** + * Construct an rgba color from a given hex color code. + * + * @param {number} color + * Hex number for color, like #f0e or #f604e2. + * + * @param {number} opacity + * Value for opacity, 0.0 - 1.0. + * + * @return {string} + * The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'. + */ + function constructColor(color, opacity) { + var hex = void 0; + + if (color.length === 4) { + // color looks like "#f0e" + hex = color[1] + color[1] + color[2] + color[2] + color[3] + color[3]; + } else if (color.length === 7) { + // color looks like "#f604e2" + hex = color.slice(1); + } else { + throw new Error('Invalid color code provided, ' + color + '; must be formatted as e.g. #f0e or #f604e2.'); + } + return 'rgba(' + parseInt(hex.slice(0, 2), 16) + ',' + parseInt(hex.slice(2, 4), 16) + ',' + parseInt(hex.slice(4, 6), 16) + ',' + opacity + ')'; + } + + /** + * Try to update the style of a DOM element. Some style changes will throw an error, + * particularly in IE8. Those should be noops. + * + * @param {Element} el + * The DOM element to be styled. + * + * @param {string} style + * The CSS property on the element that should be styled. + * + * @param {string} rule + * The style rule that should be applied to the property. + * + * @private + */ + function tryUpdateStyle(el, style, rule) { + try { + el.style[style] = rule; + } catch (e) { + + // Satisfies linter. + return; + } + } + + /** + * The component for displaying text track cues. + * + * @extends Component + */ + + var TextTrackDisplay = function (_Component) { + inherits(TextTrackDisplay, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} [ready] + * The function to call when `TextTrackDisplay` is ready. + */ + function TextTrackDisplay(player, options, ready) { + classCallCheck(this, TextTrackDisplay); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options, ready)); + + var updateDisplayHandler = bind(_this, _this.updateDisplay); + + player.on('loadstart', bind(_this, _this.toggleDisplay)); + player.on('texttrackchange', updateDisplayHandler); + player.on('loadstart', bind(_this, _this.preselectTrack)); + + // This used to be called during player init, but was causing an error + // if a track should show by default and the display hadn't loaded yet. + // Should probably be moved to an external track loader when we support + // tracks that don't need a display. + player.ready(bind(_this, function () { + if (player.tech_ && player.tech_.featuresNativeTextTracks) { + this.hide(); + return; + } + + player.on('fullscreenchange', updateDisplayHandler); + player.on('playerresize', updateDisplayHandler); + + window_1.addEventListener('orientationchange', updateDisplayHandler); + player.on('dispose', function () { + return window_1.removeEventListener('orientationchange', updateDisplayHandler); + }); + + var tracks = this.options_.playerOptions.tracks || []; + + for (var i = 0; i < tracks.length; i++) { + this.player_.addRemoteTextTrack(tracks[i], true); + } + + this.preselectTrack(); + })); + return _this; + } + + /** + * Preselect a track following this precedence: + * - matches the previously selected {@link TextTrack}'s language and kind + * - matches the previously selected {@link TextTrack}'s language only + * - is the first default captions track + * - is the first default descriptions track + * + * @listens Player#loadstart + */ + + + TextTrackDisplay.prototype.preselectTrack = function preselectTrack() { + var modes = { captions: 1, subtitles: 1 }; + var trackList = this.player_.textTracks(); + var userPref = this.player_.cache_.selectedLanguage; + var firstDesc = void 0; + var firstCaptions = void 0; + var preferredTrack = void 0; + + for (var i = 0; i < trackList.length; i++) { + var track = trackList[i]; + + if (userPref && userPref.enabled && userPref.language === track.language) { + // Always choose the track that matches both language and kind + if (track.kind === userPref.kind) { + preferredTrack = track; + // or choose the first track that matches language + } else if (!preferredTrack) { + preferredTrack = track; + } + + // clear everything if offTextTrackMenuItem was clicked + } else if (userPref && !userPref.enabled) { + preferredTrack = null; + firstDesc = null; + firstCaptions = null; + } else if (track.default) { + if (track.kind === 'descriptions' && !firstDesc) { + firstDesc = track; + } else if (track.kind in modes && !firstCaptions) { + firstCaptions = track; + } + } + } + + // The preferredTrack matches the user preference and takes + // precedence over all the other tracks. + // So, display the preferredTrack before the first default track + // and the subtitles/captions track before the descriptions track + if (preferredTrack) { + preferredTrack.mode = 'showing'; + } else if (firstCaptions) { + firstCaptions.mode = 'showing'; + } else if (firstDesc) { + firstDesc.mode = 'showing'; + } + }; + + /** + * Turn display of {@link TextTrack}'s from the current state into the other state. + * There are only two states: + * - 'shown' + * - 'hidden' + * + * @listens Player#loadstart + */ + + + TextTrackDisplay.prototype.toggleDisplay = function toggleDisplay() { + if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) { + this.hide(); + } else { + this.show(); + } + }; + + /** + * Create the {@link Component}'s DOM element. + * + * @return {Element} + * The element that was created. + */ + + + TextTrackDisplay.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-text-track-display' + }, { + 'aria-live': 'off', + 'aria-atomic': 'true' + }); + }; + + /** + * Clear all displayed {@link TextTrack}s. + */ + + + TextTrackDisplay.prototype.clearDisplay = function clearDisplay() { + if (typeof window_1.WebVTT === 'function') { + window_1.WebVTT.processCues(window_1, [], this.el_); + } + }; + + /** + * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or + * a {@link Player#fullscreenchange} is fired. + * + * @listens Player#texttrackchange + * @listens Player#fullscreenchange + */ + + + TextTrackDisplay.prototype.updateDisplay = function updateDisplay() { + var tracks = this.player_.textTracks(); + + this.clearDisplay(); + + // Track display prioritization model: if multiple tracks are 'showing', + // display the first 'subtitles' or 'captions' track which is 'showing', + // otherwise display the first 'descriptions' track which is 'showing' + + var descriptionsTrack = null; + var captionsSubtitlesTrack = null; + var i = tracks.length; + + while (i--) { + var track = tracks[i]; + + if (track.mode === 'showing') { + if (track.kind === 'descriptions') { + descriptionsTrack = track; + } else { + captionsSubtitlesTrack = track; + } + } + } + + if (captionsSubtitlesTrack) { + if (this.getAttribute('aria-live') !== 'off') { + this.setAttribute('aria-live', 'off'); + } + this.updateForTrack(captionsSubtitlesTrack); + } else if (descriptionsTrack) { + if (this.getAttribute('aria-live') !== 'assertive') { + this.setAttribute('aria-live', 'assertive'); + } + this.updateForTrack(descriptionsTrack); + } + }; + + /** + * Add an {@link TextTrack} to to the {@link Tech}s {@link TextTrackList}. + * + * @param {TextTrack} track + * Text track object to be added to the list. + */ + + + TextTrackDisplay.prototype.updateForTrack = function updateForTrack(track) { + if (typeof window_1.WebVTT !== 'function' || !track.activeCues) { + return; + } + + var cues = []; + + for (var _i = 0; _i < track.activeCues.length; _i++) { + cues.push(track.activeCues[_i]); + } + + window_1.WebVTT.processCues(window_1, cues, this.el_); + + if (!this.player_.textTrackSettings) { + return; + } + + var overrides = this.player_.textTrackSettings.getValues(); + + var i = cues.length; + + while (i--) { + var cue = cues[i]; + + if (!cue) { + continue; + } + + var cueDiv = cue.displayState; + + if (overrides.color) { + cueDiv.firstChild.style.color = overrides.color; + } + if (overrides.textOpacity) { + tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity)); + } + if (overrides.backgroundColor) { + cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor; + } + if (overrides.backgroundOpacity) { + tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity)); + } + if (overrides.windowColor) { + if (overrides.windowOpacity) { + tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity)); + } else { + cueDiv.style.backgroundColor = overrides.windowColor; + } + } + if (overrides.edgeStyle) { + if (overrides.edgeStyle === 'dropshadow') { + cueDiv.firstChild.style.textShadow = '2px 2px 3px ' + darkGray + ', 2px 2px 4px ' + darkGray + ', 2px 2px 5px ' + darkGray; + } else if (overrides.edgeStyle === 'raised') { + cueDiv.firstChild.style.textShadow = '1px 1px ' + darkGray + ', 2px 2px ' + darkGray + ', 3px 3px ' + darkGray; + } else if (overrides.edgeStyle === 'depressed') { + cueDiv.firstChild.style.textShadow = '1px 1px ' + lightGray + ', 0 1px ' + lightGray + ', -1px -1px ' + darkGray + ', 0 -1px ' + darkGray; + } else if (overrides.edgeStyle === 'uniform') { + cueDiv.firstChild.style.textShadow = '0 0 4px ' + darkGray + ', 0 0 4px ' + darkGray + ', 0 0 4px ' + darkGray + ', 0 0 4px ' + darkGray; + } + } + if (overrides.fontPercent && overrides.fontPercent !== 1) { + var fontSize = window_1.parseFloat(cueDiv.style.fontSize); + + cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px'; + cueDiv.style.height = 'auto'; + cueDiv.style.top = 'auto'; + cueDiv.style.bottom = '2px'; + } + if (overrides.fontFamily && overrides.fontFamily !== 'default') { + if (overrides.fontFamily === 'small-caps') { + cueDiv.firstChild.style.fontVariant = 'small-caps'; + } else { + cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily]; + } + } + } + }; + + return TextTrackDisplay; + }(Component); + + Component.registerComponent('TextTrackDisplay', TextTrackDisplay); + + /** + * @file loading-spinner.js + */ + + /** + * A loading spinner for use during waiting/loading events. + * + * @extends Component + */ + + var LoadingSpinner = function (_Component) { + inherits(LoadingSpinner, _Component); + + function LoadingSpinner() { + classCallCheck(this, LoadingSpinner); + return possibleConstructorReturn(this, _Component.apply(this, arguments)); + } + + /** + * Create the `LoadingSpinner`s DOM element. + * + * @return {Element} + * The dom element that gets created. + */ + LoadingSpinner.prototype.createEl = function createEl$$1() { + var isAudio = this.player_.isAudio(); + var playerType = this.localize(isAudio ? 'Audio Player' : 'Video Player'); + var controlText = createEl('span', { + className: 'vjs-control-text', + innerHTML: this.localize('{1} is loading.', [playerType]) + }); + + var el = _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-loading-spinner', + dir: 'ltr' + }); + + el.appendChild(controlText); + + return el; + }; + + return LoadingSpinner; + }(Component); + + Component.registerComponent('LoadingSpinner', LoadingSpinner); + + /** + * @file button.js + */ + + /** + * Base class for all buttons. + * + * @extends ClickableComponent + */ + + var Button = function (_ClickableComponent) { + inherits(Button, _ClickableComponent); + + function Button() { + classCallCheck(this, Button); + return possibleConstructorReturn(this, _ClickableComponent.apply(this, arguments)); + } + + /** + * Create the `Button`s DOM element. + * + * @param {string} [tag="button"] + * The element's node type. This argument is IGNORED: no matter what + * is passed, it will always create a `button` element. + * + * @param {Object} [props={}] + * An object of properties that should be set on the element. + * + * @param {Object} [attributes={}] + * An object of attributes that should be set on the element. + * + * @return {Element} + * The element that gets created. + */ + Button.prototype.createEl = function createEl(tag) { + var props = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; + + tag = 'button'; + + props = assign({ + innerHTML: '<span aria-hidden="true" class="vjs-icon-placeholder"></span>', + className: this.buildCSSClass() + }, props); + + // Add attributes for button element + attributes = assign({ + + // Necessary since the default button type is "submit" + type: 'button' + }, attributes); + + var el = Component.prototype.createEl.call(this, tag, props, attributes); + + this.createControlTextEl(el); + + return el; + }; + + /** + * Add a child `Component` inside of this `Button`. + * + * @param {string|Component} child + * The name or instance of a child to add. + * + * @param {Object} [options={}] + * The key/value store of options that will get passed to children of + * the child. + * + * @return {Component} + * The `Component` that gets added as a child. When using a string the + * `Component` will get created by this process. + * + * @deprecated since version 5 + */ + + + Button.prototype.addChild = function addChild(child) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + var className = this.constructor.name; + + log$1.warn('Adding an actionable (user controllable) child to a Button (' + className + ') is not supported; use a ClickableComponent instead.'); + + // Avoid the error message generated by ClickableComponent's addChild method + return Component.prototype.addChild.call(this, child, options); + }; + + /** + * Enable the `Button` element so that it can be activated or clicked. Use this with + * {@link Button#disable}. + */ + + + Button.prototype.enable = function enable() { + _ClickableComponent.prototype.enable.call(this); + this.el_.removeAttribute('disabled'); + }; + + /** + * Disable the `Button` element so that it cannot be activated or clicked. Use this with + * {@link Button#enable}. + */ + + + Button.prototype.disable = function disable() { + _ClickableComponent.prototype.disable.call(this); + this.el_.setAttribute('disabled', 'disabled'); + }; + + /** + * This gets called when a `Button` has focus and `keydown` is triggered via a key + * press. + * + * @param {EventTarget~Event} event + * The event that caused this function to get called. + * + * @listens keydown + */ + + + Button.prototype.handleKeyPress = function handleKeyPress(event) { + + // Ignore Space (32) or Enter (13) key operation, which is handled by the browser for a button. + if (event.which === 32 || event.which === 13) { + return; + } + + // Pass keypress handling up for unsupported keys + _ClickableComponent.prototype.handleKeyPress.call(this, event); + }; + + return Button; + }(ClickableComponent); + + Component.registerComponent('Button', Button); + + /** + * @file big-play-button.js + */ + + /** + * The initial play button that shows before the video has played. The hiding of the + * `BigPlayButton` get done via CSS and `Player` states. + * + * @extends Button + */ + + var BigPlayButton = function (_Button) { + inherits(BigPlayButton, _Button); + + function BigPlayButton(player, options) { + classCallCheck(this, BigPlayButton); + + var _this = possibleConstructorReturn(this, _Button.call(this, player, options)); + + _this.mouseused_ = false; + + _this.on('mousedown', _this.handleMouseDown); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. Always returns 'vjs-big-play-button'. + */ + + + BigPlayButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-big-play-button'; + }; + + /** + * This gets called when a `BigPlayButton` "clicked". See {@link ClickableComponent} + * for more detailed information on what a click can be. + * + * @param {EventTarget~Event} event + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + BigPlayButton.prototype.handleClick = function handleClick(event) { + var playPromise = this.player_.play(); + + // exit early if clicked via the mouse + if (this.mouseused_ && event.clientX && event.clientY) { + silencePromise(playPromise); + return; + } + + var cb = this.player_.getChild('controlBar'); + var playToggle = cb && cb.getChild('playToggle'); + + if (!playToggle) { + this.player_.focus(); + return; + } + + var playFocus = function playFocus() { + return playToggle.focus(); + }; + + if (isPromise(playPromise)) { + playPromise.then(playFocus, function () {}); + } else { + this.setTimeout(playFocus, 1); + } + }; + + BigPlayButton.prototype.handleKeyPress = function handleKeyPress(event) { + this.mouseused_ = false; + + _Button.prototype.handleKeyPress.call(this, event); + }; + + BigPlayButton.prototype.handleMouseDown = function handleMouseDown(event) { + this.mouseused_ = true; + }; + + return BigPlayButton; + }(Button); + + /** + * The text that should display over the `BigPlayButton`s controls. Added to for localization. + * + * @type {string} + * @private + */ + + + BigPlayButton.prototype.controlText_ = 'Play Video'; + + Component.registerComponent('BigPlayButton', BigPlayButton); + + /** + * @file close-button.js + */ + + /** + * The `CloseButton` is a `{@link Button}` that fires a `close` event when + * it gets clicked. + * + * @extends Button + */ + + var CloseButton = function (_Button) { + inherits(CloseButton, _Button); + + /** + * Creates an instance of the this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function CloseButton(player, options) { + classCallCheck(this, CloseButton); + + var _this = possibleConstructorReturn(this, _Button.call(this, player, options)); + + _this.controlText(options && options.controlText || _this.localize('Close')); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + CloseButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-close-button ' + _Button.prototype.buildCSSClass.call(this); + }; + + /** + * This gets called when a `CloseButton` gets clicked. See + * {@link ClickableComponent#handleClick} for more information on when this will be + * triggered + * + * @param {EventTarget~Event} event + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + * @fires CloseButton#close + */ + + + CloseButton.prototype.handleClick = function handleClick(event) { + + /** + * Triggered when the a `CloseButton` is clicked. + * + * @event CloseButton#close + * @type {EventTarget~Event} + * + * @property {boolean} [bubbles=false] + * set to false so that the close event does not + * bubble up to parents if there is no listener + */ + this.trigger({ type: 'close', bubbles: false }); + }; + + return CloseButton; + }(Button); + + Component.registerComponent('CloseButton', CloseButton); + + /** + * @file play-toggle.js + */ + + /** + * Button to toggle between play and pause. + * + * @extends Button + */ + + var PlayToggle = function (_Button) { + inherits(PlayToggle, _Button); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function PlayToggle(player, options) { + classCallCheck(this, PlayToggle); + + var _this = possibleConstructorReturn(this, _Button.call(this, player, options)); + + _this.on(player, 'play', _this.handlePlay); + _this.on(player, 'pause', _this.handlePause); + _this.on(player, 'ended', _this.handleEnded); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + PlayToggle.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-play-control ' + _Button.prototype.buildCSSClass.call(this); + }; + + /** + * This gets called when an `PlayToggle` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + PlayToggle.prototype.handleClick = function handleClick(event) { + if (this.player_.paused()) { + this.player_.play(); + } else { + this.player_.pause(); + } + }; + + /** + * This gets called once after the video has ended and the user seeks so that + * we can change the replay button back to a play button. + * + * @param {EventTarget~Event} [event] + * The event that caused this function to run. + * + * @listens Player#seeked + */ + + + PlayToggle.prototype.handleSeeked = function handleSeeked(event) { + this.removeClass('vjs-ended'); + + if (this.player_.paused()) { + this.handlePause(event); + } else { + this.handlePlay(event); + } + }; + + /** + * Add the vjs-playing class to the element so it can change appearance. + * + * @param {EventTarget~Event} [event] + * The event that caused this function to run. + * + * @listens Player#play + */ + + + PlayToggle.prototype.handlePlay = function handlePlay(event) { + this.removeClass('vjs-ended'); + this.removeClass('vjs-paused'); + this.addClass('vjs-playing'); + // change the button text to "Pause" + this.controlText('Pause'); + }; + + /** + * Add the vjs-paused class to the element so it can change appearance. + * + * @param {EventTarget~Event} [event] + * The event that caused this function to run. + * + * @listens Player#pause + */ + + + PlayToggle.prototype.handlePause = function handlePause(event) { + this.removeClass('vjs-playing'); + this.addClass('vjs-paused'); + // change the button text to "Play" + this.controlText('Play'); + }; + + /** + * Add the vjs-ended class to the element so it can change appearance + * + * @param {EventTarget~Event} [event] + * The event that caused this function to run. + * + * @listens Player#ended + */ + + + PlayToggle.prototype.handleEnded = function handleEnded(event) { + this.removeClass('vjs-playing'); + this.addClass('vjs-ended'); + // change the button text to "Replay" + this.controlText('Replay'); + + // on the next seek remove the replay button + this.one(this.player_, 'seeked', this.handleSeeked); + }; + + return PlayToggle; + }(Button); + + /** + * The text that should display over the `PlayToggle`s controls. Added for localization. + * + * @type {string} + * @private + */ + + + PlayToggle.prototype.controlText_ = 'Play'; + + Component.registerComponent('PlayToggle', PlayToggle); + + /** + * @file format-time.js + * @module format-time + */ + + /** + * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in seconds) + * will force a number of leading zeros to cover the length of the guide. + * + * @param {number} seconds + * Number of seconds to be turned into a string + * + * @param {number} guide + * Number (in seconds) to model the string after + * + * @return {string} + * Time formatted as H:MM:SS or M:SS + */ + var defaultImplementation = function defaultImplementation(seconds, guide) { + seconds = seconds < 0 ? 0 : seconds; + var s = Math.floor(seconds % 60); + var m = Math.floor(seconds / 60 % 60); + var h = Math.floor(seconds / 3600); + var gm = Math.floor(guide / 60 % 60); + var gh = Math.floor(guide / 3600); + + // handle invalid times + if (isNaN(seconds) || seconds === Infinity) { + // '-' is false for all relational operators (e.g. <, >=) so this setting + // will add the minimum number of fields specified by the guide + h = m = s = '-'; + } + + // Check if we need to show hours + h = h > 0 || gh > 0 ? h + ':' : ''; + + // If hours are showing, we may need to add a leading zero. + // Always show at least one digit of minutes. + m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':'; + + // Check if leading zero is need for seconds + s = s < 10 ? '0' + s : s; + + return h + m + s; + }; + + var implementation = defaultImplementation; + + /** + * Replaces the default formatTime implementation with a custom implementation. + * + * @param {Function} customImplementation + * A function which will be used in place of the default formatTime implementation. + * Will receive the current time in seconds and the guide (in seconds) as arguments. + */ + function setFormatTime(customImplementation) { + implementation = customImplementation; + } + + /** + * Resets formatTime to the default implementation. + */ + function resetFormatTime() { + implementation = defaultImplementation; + } + + function formatTime (seconds) { + var guide = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : seconds; + + return implementation(seconds, guide); + } + + /** + * @file time-display.js + */ + + /** + * Displays the time left in the video + * + * @extends Component + */ + + var TimeDisplay = function (_Component) { + inherits(TimeDisplay, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function TimeDisplay(player, options) { + classCallCheck(this, TimeDisplay); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.throttledUpdateContent = throttle(bind(_this, _this.updateContent), 25); + _this.on(player, 'timeupdate', _this.throttledUpdateContent); + return _this; + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + TimeDisplay.prototype.createEl = function createEl$$1(plainName) { + var className = this.buildCSSClass(); + var el = _Component.prototype.createEl.call(this, 'div', { + className: className + ' vjs-time-control vjs-control', + innerHTML: '<span class="vjs-control-text">' + this.localize(this.labelText_) + '\xA0</span>' + }); + + this.contentEl_ = createEl('span', { + className: className + '-display' + }, { + // tell screen readers not to automatically read the time as it changes + 'aria-live': 'off' + }); + + this.updateTextNode_(); + el.appendChild(this.contentEl_); + return el; + }; + + TimeDisplay.prototype.dispose = function dispose() { + this.contentEl_ = null; + this.textNode_ = null; + + _Component.prototype.dispose.call(this); + }; + + /** + * Updates the "remaining time" text node with new content using the + * contents of the `formattedTime_` property. + * + * @private + */ + + + TimeDisplay.prototype.updateTextNode_ = function updateTextNode_() { + if (!this.contentEl_) { + return; + } + + while (this.contentEl_.firstChild) { + this.contentEl_.removeChild(this.contentEl_.firstChild); + } + + this.textNode_ = document_1.createTextNode(this.formattedTime_ || this.formatTime_(0)); + this.contentEl_.appendChild(this.textNode_); + }; + + /** + * Generates a formatted time for this component to use in display. + * + * @param {number} time + * A numeric time, in seconds. + * + * @return {string} + * A formatted time + * + * @private + */ + + + TimeDisplay.prototype.formatTime_ = function formatTime_(time) { + return formatTime(time); + }; + + /** + * Updates the time display text node if it has what was passed in changed + * the formatted time. + * + * @param {number} time + * The time to update to + * + * @private + */ + + + TimeDisplay.prototype.updateFormattedTime_ = function updateFormattedTime_(time) { + var formattedTime = this.formatTime_(time); + + if (formattedTime === this.formattedTime_) { + return; + } + + this.formattedTime_ = formattedTime; + this.requestAnimationFrame(this.updateTextNode_); + }; + + /** + * To be filled out in the child class, should update the displayed time + * in accordance with the fact that the current time has changed. + * + * @param {EventTarget~Event} [event] + * The `timeupdate` event that caused this to run. + * + * @listens Player#timeupdate + */ + + + TimeDisplay.prototype.updateContent = function updateContent(event) {}; + + return TimeDisplay; + }(Component); + + /** + * The text that is added to the `TimeDisplay` for screen reader users. + * + * @type {string} + * @private + */ + + + TimeDisplay.prototype.labelText_ = 'Time'; + + /** + * The text that should display over the `TimeDisplay`s controls. Added to for localization. + * + * @type {string} + * @private + * + * @deprecated in v7; controlText_ is not used in non-active display Components + */ + TimeDisplay.prototype.controlText_ = 'Time'; + + Component.registerComponent('TimeDisplay', TimeDisplay); + + /** + * @file current-time-display.js + */ + + /** + * Displays the current time + * + * @extends Component + */ + + var CurrentTimeDisplay = function (_TimeDisplay) { + inherits(CurrentTimeDisplay, _TimeDisplay); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function CurrentTimeDisplay(player, options) { + classCallCheck(this, CurrentTimeDisplay); + + var _this = possibleConstructorReturn(this, _TimeDisplay.call(this, player, options)); + + _this.on(player, 'ended', _this.handleEnded); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + CurrentTimeDisplay.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-current-time'; + }; + + /** + * Update current time display + * + * @param {EventTarget~Event} [event] + * The `timeupdate` event that caused this function to run. + * + * @listens Player#timeupdate + */ + + + CurrentTimeDisplay.prototype.updateContent = function updateContent(event) { + // Allows for smooth scrubbing, when player can't keep up. + var time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime(); + + this.updateFormattedTime_(time); + }; + + /** + * When the player fires ended there should be no time left. Sadly + * this is not always the case, lets make it seem like that is the case + * for users. + * + * @param {EventTarget~Event} [event] + * The `ended` event that caused this to run. + * + * @listens Player#ended + */ + + + CurrentTimeDisplay.prototype.handleEnded = function handleEnded(event) { + if (!this.player_.duration()) { + return; + } + this.updateFormattedTime_(this.player_.duration()); + }; + + return CurrentTimeDisplay; + }(TimeDisplay); + + /** + * The text that is added to the `CurrentTimeDisplay` for screen reader users. + * + * @type {string} + * @private + */ + + + CurrentTimeDisplay.prototype.labelText_ = 'Current Time'; + + /** + * The text that should display over the `CurrentTimeDisplay`s controls. Added to for localization. + * + * @type {string} + * @private + * + * @deprecated in v7; controlText_ is not used in non-active display Components + */ + CurrentTimeDisplay.prototype.controlText_ = 'Current Time'; + + Component.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay); + + /** + * @file duration-display.js + */ + + /** + * Displays the duration + * + * @extends Component + */ + + var DurationDisplay = function (_TimeDisplay) { + inherits(DurationDisplay, _TimeDisplay); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function DurationDisplay(player, options) { + classCallCheck(this, DurationDisplay); + + // we do not want to/need to throttle duration changes, + // as they should always display the changed duration as + // it has changed + var _this = possibleConstructorReturn(this, _TimeDisplay.call(this, player, options)); + + _this.on(player, 'durationchange', _this.updateContent); + + // Also listen for timeupdate (in the parent) and loadedmetadata because removing those + // listeners could have broken dependent applications/libraries. These + // can likely be removed for 7.0. + _this.on(player, 'loadedmetadata', _this.throttledUpdateContent); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + DurationDisplay.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-duration'; + }; + + /** + * Update duration time display. + * + * @param {EventTarget~Event} [event] + * The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused + * this function to be called. + * + * @listens Player#durationchange + * @listens Player#timeupdate + * @listens Player#loadedmetadata + */ + + + DurationDisplay.prototype.updateContent = function updateContent(event) { + var duration = this.player_.duration(); + + if (duration && this.duration_ !== duration) { + this.duration_ = duration; + this.updateFormattedTime_(duration); + } + }; + + return DurationDisplay; + }(TimeDisplay); + + /** + * The text that is added to the `DurationDisplay` for screen reader users. + * + * @type {string} + * @private + */ + + + DurationDisplay.prototype.labelText_ = 'Duration'; + + /** + * The text that should display over the `DurationDisplay`s controls. Added to for localization. + * + * @type {string} + * @private + * + * @deprecated in v7; controlText_ is not used in non-active display Components + */ + DurationDisplay.prototype.controlText_ = 'Duration'; + + Component.registerComponent('DurationDisplay', DurationDisplay); + + /** + * @file time-divider.js + */ + + /** + * The separator between the current time and duration. + * Can be hidden if it's not needed in the design. + * + * @extends Component + */ + + var TimeDivider = function (_Component) { + inherits(TimeDivider, _Component); + + function TimeDivider() { + classCallCheck(this, TimeDivider); + return possibleConstructorReturn(this, _Component.apply(this, arguments)); + } + + /** + * Create the component's DOM element + * + * @return {Element} + * The element that was created. + */ + TimeDivider.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-time-control vjs-time-divider', + innerHTML: '<div><span>/</span></div>' + }); + }; + + return TimeDivider; + }(Component); + + Component.registerComponent('TimeDivider', TimeDivider); + + /** + * @file remaining-time-display.js + */ + /** + * Displays the time left in the video + * + * @extends Component + */ + + var RemainingTimeDisplay = function (_TimeDisplay) { + inherits(RemainingTimeDisplay, _TimeDisplay); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function RemainingTimeDisplay(player, options) { + classCallCheck(this, RemainingTimeDisplay); + + var _this = possibleConstructorReturn(this, _TimeDisplay.call(this, player, options)); + + _this.on(player, 'durationchange', _this.throttledUpdateContent); + _this.on(player, 'ended', _this.handleEnded); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + RemainingTimeDisplay.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-remaining-time'; + }; + + /** + * The remaining time display prefixes numbers with a "minus" character. + * + * @param {number} time + * A numeric time, in seconds. + * + * @return {string} + * A formatted time + * + * @private + */ + + + RemainingTimeDisplay.prototype.formatTime_ = function formatTime_(time) { + // TODO: The "-" should be decorative, and not announced by a screen reader + return '-' + _TimeDisplay.prototype.formatTime_.call(this, time); + }; + + /** + * Update remaining time display. + * + * @param {EventTarget~Event} [event] + * The `timeupdate` or `durationchange` event that caused this to run. + * + * @listens Player#timeupdate + * @listens Player#durationchange + */ + + + RemainingTimeDisplay.prototype.updateContent = function updateContent(event) { + if (!this.player_.duration()) { + return; + } + + // @deprecated We should only use remainingTimeDisplay + // as of video.js 7 + if (this.player_.remainingTimeDisplay) { + this.updateFormattedTime_(this.player_.remainingTimeDisplay()); + } else { + this.updateFormattedTime_(this.player_.remainingTime()); + } + }; + + /** + * When the player fires ended there should be no time left. Sadly + * this is not always the case, lets make it seem like that is the case + * for users. + * + * @param {EventTarget~Event} [event] + * The `ended` event that caused this to run. + * + * @listens Player#ended + */ + + + RemainingTimeDisplay.prototype.handleEnded = function handleEnded(event) { + if (!this.player_.duration()) { + return; + } + this.updateFormattedTime_(0); + }; + + return RemainingTimeDisplay; + }(TimeDisplay); + + /** + * The text that is added to the `RemainingTimeDisplay` for screen reader users. + * + * @type {string} + * @private + */ + + + RemainingTimeDisplay.prototype.labelText_ = 'Remaining Time'; + + /** + * The text that should display over the `RemainingTimeDisplay`s controls. Added to for localization. + * + * @type {string} + * @private + * + * @deprecated in v7; controlText_ is not used in non-active display Components + */ + RemainingTimeDisplay.prototype.controlText_ = 'Remaining Time'; + + Component.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay); + + /** + * @file live-display.js + */ + + // TODO - Future make it click to snap to live + + /** + * Displays the live indicator when duration is Infinity. + * + * @extends Component + */ + + var LiveDisplay = function (_Component) { + inherits(LiveDisplay, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function LiveDisplay(player, options) { + classCallCheck(this, LiveDisplay); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.updateShowing(); + _this.on(_this.player(), 'durationchange', _this.updateShowing); + return _this; + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + LiveDisplay.prototype.createEl = function createEl$$1() { + var el = _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-live-control vjs-control' + }); + + this.contentEl_ = createEl('div', { + className: 'vjs-live-display', + innerHTML: '<span class="vjs-control-text">' + this.localize('Stream Type') + '\xA0</span>' + this.localize('LIVE') + }, { + 'aria-live': 'off' + }); + + el.appendChild(this.contentEl_); + return el; + }; + + LiveDisplay.prototype.dispose = function dispose() { + this.contentEl_ = null; + + _Component.prototype.dispose.call(this); + }; + + /** + * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide + * it accordingly + * + * @param {EventTarget~Event} [event] + * The {@link Player#durationchange} event that caused this function to run. + * + * @listens Player#durationchange + */ + + + LiveDisplay.prototype.updateShowing = function updateShowing(event) { + if (this.player().duration() === Infinity) { + this.show(); + } else { + this.hide(); + } + }; + + return LiveDisplay; + }(Component); + + Component.registerComponent('LiveDisplay', LiveDisplay); + + /** + * @file slider.js + */ + + /** + * The base functionality for a slider. Can be vertical or horizontal. + * For instance the volume bar or the seek bar on a video is a slider. + * + * @extends Component + */ + + var Slider = function (_Component) { + inherits(Slider, _Component); + + /** + * Create an instance of this class + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function Slider(player, options) { + classCallCheck(this, Slider); + + // Set property names to bar to match with the child Slider class is looking for + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.bar = _this.getChild(_this.options_.barName); + + // Set a horizontal or vertical class on the slider depending on the slider type + _this.vertical(!!_this.options_.vertical); + + _this.enable(); + return _this; + } + + /** + * Are controls are currently enabled for this slider or not. + * + * @return {boolean} + * true if controls are enabled, false otherwise + */ + + + Slider.prototype.enabled = function enabled() { + return this.enabled_; + }; + + /** + * Enable controls for this slider if they are disabled + */ + + + Slider.prototype.enable = function enable() { + if (this.enabled()) { + return; + } + + this.on('mousedown', this.handleMouseDown); + this.on('touchstart', this.handleMouseDown); + this.on('focus', this.handleFocus); + this.on('blur', this.handleBlur); + this.on('click', this.handleClick); + + this.on(this.player_, 'controlsvisible', this.update); + + if (this.playerEvent) { + this.on(this.player_, this.playerEvent, this.update); + } + + this.removeClass('disabled'); + this.setAttribute('tabindex', 0); + + this.enabled_ = true; + }; + + /** + * Disable controls for this slider if they are enabled + */ + + + Slider.prototype.disable = function disable() { + if (!this.enabled()) { + return; + } + var doc = this.bar.el_.ownerDocument; + + this.off('mousedown', this.handleMouseDown); + this.off('touchstart', this.handleMouseDown); + this.off('focus', this.handleFocus); + this.off('blur', this.handleBlur); + this.off('click', this.handleClick); + this.off(this.player_, 'controlsvisible', this.update); + this.off(doc, 'mousemove', this.handleMouseMove); + this.off(doc, 'mouseup', this.handleMouseUp); + this.off(doc, 'touchmove', this.handleMouseMove); + this.off(doc, 'touchend', this.handleMouseUp); + this.removeAttribute('tabindex'); + + this.addClass('disabled'); + + if (this.playerEvent) { + this.off(this.player_, this.playerEvent, this.update); + } + this.enabled_ = false; + }; + + /** + * Create the `Slider`s DOM element. + * + * @param {string} type + * Type of element to create. + * + * @param {Object} [props={}] + * List of properties in Object form. + * + * @param {Object} [attributes={}] + * list of attributes in Object form. + * + * @return {Element} + * The element that gets created. + */ + + + Slider.prototype.createEl = function createEl$$1(type) { + var props = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var attributes = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; + + // Add the slider element class to all sub classes + props.className = props.className + ' vjs-slider'; + props = assign({ + tabIndex: 0 + }, props); + + attributes = assign({ + 'role': 'slider', + 'aria-valuenow': 0, + 'aria-valuemin': 0, + 'aria-valuemax': 100, + 'tabIndex': 0 + }, attributes); + + return _Component.prototype.createEl.call(this, type, props, attributes); + }; + + /** + * Handle `mousedown` or `touchstart` events on the `Slider`. + * + * @param {EventTarget~Event} event + * `mousedown` or `touchstart` event that triggered this function + * + * @listens mousedown + * @listens touchstart + * @fires Slider#slideractive + */ + + + Slider.prototype.handleMouseDown = function handleMouseDown(event) { + var doc = this.bar.el_.ownerDocument; + + if (event.type === 'mousedown') { + event.preventDefault(); + } + // Do not call preventDefault() on touchstart in Chrome + // to avoid console warnings. Use a 'touch-action: none' style + // instead to prevent unintented scrolling. + // https://developers.google.com/web/updates/2017/01/scrolling-intervention + if (event.type === 'touchstart' && !IS_CHROME) { + event.preventDefault(); + } + blockTextSelection(); + + this.addClass('vjs-sliding'); + /** + * Triggered when the slider is in an active state + * + * @event Slider#slideractive + * @type {EventTarget~Event} + */ + this.trigger('slideractive'); + + this.on(doc, 'mousemove', this.handleMouseMove); + this.on(doc, 'mouseup', this.handleMouseUp); + this.on(doc, 'touchmove', this.handleMouseMove); + this.on(doc, 'touchend', this.handleMouseUp); + + this.handleMouseMove(event); + }; + + /** + * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`. + * The `mousemove` and `touchmove` events will only only trigger this function during + * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and + * {@link Slider#handleMouseUp}. + * + * @param {EventTarget~Event} event + * `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered + * this function + * + * @listens mousemove + * @listens touchmove + */ + + + Slider.prototype.handleMouseMove = function handleMouseMove(event) {}; + + /** + * Handle `mouseup` or `touchend` events on the `Slider`. + * + * @param {EventTarget~Event} event + * `mouseup` or `touchend` event that triggered this function. + * + * @listens touchend + * @listens mouseup + * @fires Slider#sliderinactive + */ + + + Slider.prototype.handleMouseUp = function handleMouseUp() { + var doc = this.bar.el_.ownerDocument; + + unblockTextSelection(); + + this.removeClass('vjs-sliding'); + /** + * Triggered when the slider is no longer in an active state. + * + * @event Slider#sliderinactive + * @type {EventTarget~Event} + */ + this.trigger('sliderinactive'); + + this.off(doc, 'mousemove', this.handleMouseMove); + this.off(doc, 'mouseup', this.handleMouseUp); + this.off(doc, 'touchmove', this.handleMouseMove); + this.off(doc, 'touchend', this.handleMouseUp); + + this.update(); + }; + + /** + * Update the progress bar of the `Slider`. + * + * @returns {number} + * The percentage of progress the progress bar represents as a + * number from 0 to 1. + */ + + + Slider.prototype.update = function update() { + + // In VolumeBar init we have a setTimeout for update that pops and update + // to the end of the execution stack. The player is destroyed before then + // update will cause an error + if (!this.el_) { + return; + } + + // If scrubbing, we could use a cached value to make the handle keep up + // with the user's mouse. On HTML5 browsers scrubbing is really smooth, but + // some flash players are slow, so we might want to utilize this later. + // var progress = (this.player_.scrubbing()) ? this.player_.getCache().currentTime / this.player_.duration() : this.player_.currentTime() / this.player_.duration(); + var progress = this.getPercent(); + var bar = this.bar; + + // If there's no bar... + if (!bar) { + return; + } + + // Protect against no duration and other division issues + if (typeof progress !== 'number' || progress !== progress || progress < 0 || progress === Infinity) { + progress = 0; + } + + // Convert to a percentage for setting + var percentage = (progress * 100).toFixed(2) + '%'; + var style = bar.el().style; + + // Set the new bar width or height + if (this.vertical()) { + style.height = percentage; + } else { + style.width = percentage; + } + + return progress; + }; + + /** + * Calculate distance for slider + * + * @param {EventTarget~Event} event + * The event that caused this function to run. + * + * @return {number} + * The current position of the Slider. + * - position.x for vertical `Slider`s + * - position.y for horizontal `Slider`s + */ + + + Slider.prototype.calculateDistance = function calculateDistance(event) { + var position = getPointerPosition(this.el_, event); + + if (this.vertical()) { + return position.y; + } + return position.x; + }; + + /** + * Handle a `focus` event on this `Slider`. + * + * @param {EventTarget~Event} event + * The `focus` event that caused this function to run. + * + * @listens focus + */ + + + Slider.prototype.handleFocus = function handleFocus() { + this.on(this.bar.el_.ownerDocument, 'keydown', this.handleKeyPress); + }; + + /** + * Handle a `keydown` event on the `Slider`. Watches for left, rigth, up, and down + * arrow keys. This function will only be called when the slider has focus. See + * {@link Slider#handleFocus} and {@link Slider#handleBlur}. + * + * @param {EventTarget~Event} event + * the `keydown` event that caused this function to run. + * + * @listens keydown + */ + + + Slider.prototype.handleKeyPress = function handleKeyPress(event) { + // Left and Down Arrows + if (event.which === 37 || event.which === 40) { + event.preventDefault(); + this.stepBack(); + + // Up and Right Arrows + } else if (event.which === 38 || event.which === 39) { + event.preventDefault(); + this.stepForward(); + } + }; + + /** + * Handle a `blur` event on this `Slider`. + * + * @param {EventTarget~Event} event + * The `blur` event that caused this function to run. + * + * @listens blur + */ + + Slider.prototype.handleBlur = function handleBlur() { + this.off(this.bar.el_.ownerDocument, 'keydown', this.handleKeyPress); + }; + + /** + * Listener for click events on slider, used to prevent clicks + * from bubbling up to parent elements like button menus. + * + * @param {Object} event + * Event that caused this object to run + */ + + + Slider.prototype.handleClick = function handleClick(event) { + event.stopImmediatePropagation(); + event.preventDefault(); + }; + + /** + * Get/set if slider is horizontal for vertical + * + * @param {boolean} [bool] + * - true if slider is vertical, + * - false is horizontal + * + * @return {boolean} + * - true if slider is vertical, and getting + * - false if the slider is horizontal, and getting + */ + + + Slider.prototype.vertical = function vertical(bool) { + if (bool === undefined) { + return this.vertical_ || false; + } + + this.vertical_ = !!bool; + + if (this.vertical_) { + this.addClass('vjs-slider-vertical'); + } else { + this.addClass('vjs-slider-horizontal'); + } + }; + + return Slider; + }(Component); + + Component.registerComponent('Slider', Slider); + + /** + * @file load-progress-bar.js + */ + + /** + * Shows loading progress + * + * @extends Component + */ + + var LoadProgressBar = function (_Component) { + inherits(LoadProgressBar, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function LoadProgressBar(player, options) { + classCallCheck(this, LoadProgressBar); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.partEls_ = []; + _this.on(player, 'progress', _this.update); + return _this; + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + LoadProgressBar.prototype.createEl = function createEl$$1() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-load-progress', + innerHTML: '<span class="vjs-control-text"><span>' + this.localize('Loaded') + '</span>: 0%</span>' + }); + }; + + LoadProgressBar.prototype.dispose = function dispose() { + this.partEls_ = null; + + _Component.prototype.dispose.call(this); + }; + + /** + * Update progress bar + * + * @param {EventTarget~Event} [event] + * The `progress` event that caused this function to run. + * + * @listens Player#progress + */ + + + LoadProgressBar.prototype.update = function update(event) { + var buffered = this.player_.buffered(); + var duration = this.player_.duration(); + var bufferedEnd = this.player_.bufferedEnd(); + var children = this.partEls_; + + // get the percent width of a time compared to the total end + var percentify = function percentify(time, end) { + // no NaN + var percent = time / end || 0; + + return (percent >= 1 ? 1 : percent) * 100 + '%'; + }; + + // update the width of the progress bar + this.el_.style.width = percentify(bufferedEnd, duration); + + // add child elements to represent the individual buffered time ranges + for (var i = 0; i < buffered.length; i++) { + var start = buffered.start(i); + var end = buffered.end(i); + var part = children[i]; + + if (!part) { + part = this.el_.appendChild(createEl()); + children[i] = part; + } + + // set the percent based on the width of the progress bar (bufferedEnd) + part.style.left = percentify(start, bufferedEnd); + part.style.width = percentify(end - start, bufferedEnd); + } + + // remove unused buffered range elements + for (var _i = children.length; _i > buffered.length; _i--) { + this.el_.removeChild(children[_i - 1]); + } + children.length = buffered.length; + }; + + return LoadProgressBar; + }(Component); + + Component.registerComponent('LoadProgressBar', LoadProgressBar); + + /** + * @file time-tooltip.js + */ + + /** + * Time tooltips display a time above the progress bar. + * + * @extends Component + */ + + var TimeTooltip = function (_Component) { + inherits(TimeTooltip, _Component); + + function TimeTooltip() { + classCallCheck(this, TimeTooltip); + return possibleConstructorReturn(this, _Component.apply(this, arguments)); + } + + /** + * Create the time tooltip DOM element + * + * @return {Element} + * The element that was created. + */ + TimeTooltip.prototype.createEl = function createEl$$1() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-time-tooltip' + }); + }; + + /** + * Updates the position of the time tooltip relative to the `SeekBar`. + * + * @param {Object} seekBarRect + * The `ClientRect` for the {@link SeekBar} element. + * + * @param {number} seekBarPoint + * A number from 0 to 1, representing a horizontal reference point + * from the left edge of the {@link SeekBar} + */ + + + TimeTooltip.prototype.update = function update(seekBarRect, seekBarPoint, content) { + var tooltipRect = getBoundingClientRect(this.el_); + var playerRect = getBoundingClientRect(this.player_.el()); + var seekBarPointPx = seekBarRect.width * seekBarPoint; + + // do nothing if either rect isn't available + // for example, if the player isn't in the DOM for testing + if (!playerRect || !tooltipRect) { + return; + } + + // This is the space left of the `seekBarPoint` available within the bounds + // of the player. We calculate any gap between the left edge of the player + // and the left edge of the `SeekBar` and add the number of pixels in the + // `SeekBar` before hitting the `seekBarPoint` + var spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx; + + // This is the space right of the `seekBarPoint` available within the bounds + // of the player. We calculate the number of pixels from the `seekBarPoint` + // to the right edge of the `SeekBar` and add to that any gap between the + // right edge of the `SeekBar` and the player. + var spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right); + + // This is the number of pixels by which the tooltip will need to be pulled + // further to the right to center it over the `seekBarPoint`. + var pullTooltipBy = tooltipRect.width / 2; + + // Adjust the `pullTooltipBy` distance to the left or right depending on + // the results of the space calculations above. + if (spaceLeftOfPoint < pullTooltipBy) { + pullTooltipBy += pullTooltipBy - spaceLeftOfPoint; + } else if (spaceRightOfPoint < pullTooltipBy) { + pullTooltipBy = spaceRightOfPoint; + } + + // Due to the imprecision of decimal/ratio based calculations and varying + // rounding behaviors, there are cases where the spacing adjustment is off + // by a pixel or two. This adds insurance to these calculations. + if (pullTooltipBy < 0) { + pullTooltipBy = 0; + } else if (pullTooltipBy > tooltipRect.width) { + pullTooltipBy = tooltipRect.width; + } + + this.el_.style.right = '-' + pullTooltipBy + 'px'; + textContent(this.el_, content); + }; + + return TimeTooltip; + }(Component); + + Component.registerComponent('TimeTooltip', TimeTooltip); + + /** + * @file play-progress-bar.js + */ + + /** + * Used by {@link SeekBar} to display media playback progress as part of the + * {@link ProgressControl}. + * + * @extends Component + */ + + var PlayProgressBar = function (_Component) { + inherits(PlayProgressBar, _Component); + + function PlayProgressBar() { + classCallCheck(this, PlayProgressBar); + return possibleConstructorReturn(this, _Component.apply(this, arguments)); + } + + /** + * Create the the DOM element for this class. + * + * @return {Element} + * The element that was created. + */ + PlayProgressBar.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-play-progress vjs-slider-bar', + innerHTML: '<span class="vjs-control-text"><span>' + this.localize('Progress') + '</span>: 0%</span>' + }); + }; + + /** + * Enqueues updates to its own DOM as well as the DOM of its + * {@link TimeTooltip} child. + * + * @param {Object} seekBarRect + * The `ClientRect` for the {@link SeekBar} element. + * + * @param {number} seekBarPoint + * A number from 0 to 1, representing a horizontal reference point + * from the left edge of the {@link SeekBar} + */ + + + PlayProgressBar.prototype.update = function update(seekBarRect, seekBarPoint) { + var _this2 = this; + + // If there is an existing rAF ID, cancel it so we don't over-queue. + if (this.rafId_) { + this.cancelAnimationFrame(this.rafId_); + } + + this.rafId_ = this.requestAnimationFrame(function () { + var time = _this2.player_.scrubbing() ? _this2.player_.getCache().currentTime : _this2.player_.currentTime(); + + var content = formatTime(time, _this2.player_.duration()); + var timeTooltip = _this2.getChild('timeTooltip'); + + if (timeTooltip) { + timeTooltip.update(seekBarRect, seekBarPoint, content); + } + }); + }; + + return PlayProgressBar; + }(Component); + + /** + * Default options for {@link PlayProgressBar}. + * + * @type {Object} + * @private + */ + + + PlayProgressBar.prototype.options_ = { + children: [] + }; + + // Time tooltips should not be added to a player on mobile devices + if (!IS_IOS && !IS_ANDROID) { + PlayProgressBar.prototype.options_.children.push('timeTooltip'); + } + + Component.registerComponent('PlayProgressBar', PlayProgressBar); + + /** + * @file mouse-time-display.js + */ + + /** + * The {@link MouseTimeDisplay} component tracks mouse movement over the + * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip} + * indicating the time which is represented by a given point in the + * {@link ProgressControl}. + * + * @extends Component + */ + + var MouseTimeDisplay = function (_Component) { + inherits(MouseTimeDisplay, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The {@link Player} that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function MouseTimeDisplay(player, options) { + classCallCheck(this, MouseTimeDisplay); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.update = throttle(bind(_this, _this.update), 25); + return _this; + } + + /** + * Create the DOM element for this class. + * + * @return {Element} + * The element that was created. + */ + + + MouseTimeDisplay.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-mouse-display' + }); + }; + + /** + * Enqueues updates to its own DOM as well as the DOM of its + * {@link TimeTooltip} child. + * + * @param {Object} seekBarRect + * The `ClientRect` for the {@link SeekBar} element. + * + * @param {number} seekBarPoint + * A number from 0 to 1, representing a horizontal reference point + * from the left edge of the {@link SeekBar} + */ + + + MouseTimeDisplay.prototype.update = function update(seekBarRect, seekBarPoint) { + var _this2 = this; + + // If there is an existing rAF ID, cancel it so we don't over-queue. + if (this.rafId_) { + this.cancelAnimationFrame(this.rafId_); + } + + this.rafId_ = this.requestAnimationFrame(function () { + var duration = _this2.player_.duration(); + var content = formatTime(seekBarPoint * duration, duration); + + _this2.el_.style.left = seekBarRect.width * seekBarPoint + 'px'; + _this2.getChild('timeTooltip').update(seekBarRect, seekBarPoint, content); + }); + }; + + return MouseTimeDisplay; + }(Component); + + /** + * Default options for `MouseTimeDisplay` + * + * @type {Object} + * @private + */ + + + MouseTimeDisplay.prototype.options_ = { + children: ['timeTooltip'] + }; + + Component.registerComponent('MouseTimeDisplay', MouseTimeDisplay); + + /** + * @file seek-bar.js + */ + + // The number of seconds the `step*` functions move the timeline. + var STEP_SECONDS = 5; + + // The interval at which the bar should update as it progresses. + var UPDATE_REFRESH_INTERVAL = 30; + + /** + * Seek bar and container for the progress bars. Uses {@link PlayProgressBar} + * as its `bar`. + * + * @extends Slider + */ + + var SeekBar = function (_Slider) { + inherits(SeekBar, _Slider); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function SeekBar(player, options) { + classCallCheck(this, SeekBar); + + var _this = possibleConstructorReturn(this, _Slider.call(this, player, options)); + + _this.setEventHandlers_(); + return _this; + } + + /** + * Sets the event handlers + * + * @private + */ + + + SeekBar.prototype.setEventHandlers_ = function setEventHandlers_() { + var _this2 = this; + + this.update = throttle(bind(this, this.update), UPDATE_REFRESH_INTERVAL); + + this.on(this.player_, 'timeupdate', this.update); + this.on(this.player_, 'ended', this.handleEnded); + + // when playing, let's ensure we smoothly update the play progress bar + // via an interval + this.updateInterval = null; + + this.on(this.player_, ['playing'], function () { + _this2.clearInterval(_this2.updateInterval); + + _this2.updateInterval = _this2.setInterval(function () { + _this2.requestAnimationFrame(function () { + _this2.update(); + }); + }, UPDATE_REFRESH_INTERVAL); + }); + + this.on(this.player_, ['ended', 'pause', 'waiting'], function () { + _this2.clearInterval(_this2.updateInterval); + }); + + this.on(this.player_, ['timeupdate', 'ended'], this.update); + }; + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + SeekBar.prototype.createEl = function createEl$$1() { + return _Slider.prototype.createEl.call(this, 'div', { + className: 'vjs-progress-holder' + }, { + 'aria-label': this.localize('Progress Bar') + }); + }; + + /** + * This function updates the play progress bar and accessibility + * attributes to whatever is passed in. + * + * @param {number} currentTime + * The currentTime value that should be used for accessibility + * + * @param {number} percent + * The percentage as a decimal that the bar should be filled from 0-1. + * + * @private + */ + + + SeekBar.prototype.update_ = function update_(currentTime, percent) { + var duration = this.player_.duration(); + + // machine readable value of progress bar (percentage complete) + this.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2)); + + // human readable value of progress bar (time complete) + this.el_.setAttribute('aria-valuetext', this.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(currentTime, duration), formatTime(duration, duration)], '{1} of {2}')); + + // Update the `PlayProgressBar`. + this.bar.update(getBoundingClientRect(this.el_), percent); + }; + + /** + * Update the seek bar's UI. + * + * @param {EventTarget~Event} [event] + * The `timeupdate` or `ended` event that caused this to run. + * + * @listens Player#timeupdate + * + * @returns {number} + * The current percent at a number from 0-1 + */ + + + SeekBar.prototype.update = function update(event) { + var percent = _Slider.prototype.update.call(this); + + this.update_(this.getCurrentTime_(), percent); + return percent; + }; + + /** + * Get the value of current time but allows for smooth scrubbing, + * when player can't keep up. + * + * @return {number} + * The current time value to display + * + * @private + */ + + + SeekBar.prototype.getCurrentTime_ = function getCurrentTime_() { + return this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime(); + }; + + /** + * We want the seek bar to be full on ended + * no matter what the actual internal values are. so we force it. + * + * @param {EventTarget~Event} [event] + * The `timeupdate` or `ended` event that caused this to run. + * + * @listens Player#ended + */ + + + SeekBar.prototype.handleEnded = function handleEnded(event) { + this.update_(this.player_.duration(), 1); + }; + + /** + * Get the percentage of media played so far. + * + * @return {number} + * The percentage of media played so far (0 to 1). + */ + + + SeekBar.prototype.getPercent = function getPercent() { + var percent = this.getCurrentTime_() / this.player_.duration(); + + return percent >= 1 ? 1 : percent || 0; + }; + + /** + * Handle mouse down on seek bar + * + * @param {EventTarget~Event} event + * The `mousedown` event that caused this to run. + * + * @listens mousedown + */ + + + SeekBar.prototype.handleMouseDown = function handleMouseDown(event) { + if (!isSingleLeftClick(event)) { + return; + } + + // Stop event propagation to prevent double fire in progress-control.js + event.stopPropagation(); + this.player_.scrubbing(true); + + this.videoWasPlaying = !this.player_.paused(); + this.player_.pause(); + + _Slider.prototype.handleMouseDown.call(this, event); + }; + + /** + * Handle mouse move on seek bar + * + * @param {EventTarget~Event} event + * The `mousemove` event that caused this to run. + * + * @listens mousemove + */ + + + SeekBar.prototype.handleMouseMove = function handleMouseMove(event) { + if (!isSingleLeftClick(event)) { + return; + } + + var newTime = this.calculateDistance(event) * this.player_.duration(); + + // Don't let video end while scrubbing. + if (newTime === this.player_.duration()) { + newTime = newTime - 0.1; + } + + // Set new time (tell player to seek to new time) + this.player_.currentTime(newTime); + }; + + SeekBar.prototype.enable = function enable() { + _Slider.prototype.enable.call(this); + var mouseTimeDisplay = this.getChild('mouseTimeDisplay'); + + if (!mouseTimeDisplay) { + return; + } + + mouseTimeDisplay.show(); + }; + + SeekBar.prototype.disable = function disable() { + _Slider.prototype.disable.call(this); + var mouseTimeDisplay = this.getChild('mouseTimeDisplay'); + + if (!mouseTimeDisplay) { + return; + } + + mouseTimeDisplay.hide(); + }; + + /** + * Handle mouse up on seek bar + * + * @param {EventTarget~Event} event + * The `mouseup` event that caused this to run. + * + * @listens mouseup + */ + + + SeekBar.prototype.handleMouseUp = function handleMouseUp(event) { + _Slider.prototype.handleMouseUp.call(this, event); + + // Stop event propagation to prevent double fire in progress-control.js + if (event) { + event.stopPropagation(); + } + this.player_.scrubbing(false); + + /** + * Trigger timeupdate because we're done seeking and the time has changed. + * This is particularly useful for if the player is paused to time the time displays. + * + * @event Tech#timeupdate + * @type {EventTarget~Event} + */ + this.player_.trigger({ type: 'timeupdate', target: this, manuallyTriggered: true }); + if (this.videoWasPlaying) { + silencePromise(this.player_.play()); + } + }; + + /** + * Move more quickly fast forward for keyboard-only users + */ + + + SeekBar.prototype.stepForward = function stepForward() { + this.player_.currentTime(this.player_.currentTime() + STEP_SECONDS); + }; + + /** + * Move more quickly rewind for keyboard-only users + */ + + + SeekBar.prototype.stepBack = function stepBack() { + this.player_.currentTime(this.player_.currentTime() - STEP_SECONDS); + }; + + /** + * Toggles the playback state of the player + * This gets called when enter or space is used on the seekbar + * + * @param {EventTarget~Event} event + * The `keydown` event that caused this function to be called + * + */ + + + SeekBar.prototype.handleAction = function handleAction(event) { + if (this.player_.paused()) { + this.player_.play(); + } else { + this.player_.pause(); + } + }; + + /** + * Called when this SeekBar has focus and a key gets pressed down. By + * default it will call `this.handleAction` when the key is space or enter. + * + * @param {EventTarget~Event} event + * The `keydown` event that caused this function to be called. + * + * @listens keydown + */ + + + SeekBar.prototype.handleKeyPress = function handleKeyPress(event) { + + // Support Space (32) or Enter (13) key operation to fire a click event + if (event.which === 32 || event.which === 13) { + event.preventDefault(); + this.handleAction(event); + } else if (_Slider.prototype.handleKeyPress) { + + // Pass keypress handling up for unsupported keys + _Slider.prototype.handleKeyPress.call(this, event); + } + }; + + return SeekBar; + }(Slider); + + /** + * Default options for the `SeekBar` + * + * @type {Object} + * @private + */ + + + SeekBar.prototype.options_ = { + children: ['loadProgressBar', 'playProgressBar'], + barName: 'playProgressBar' + }; + + // MouseTimeDisplay tooltips should not be added to a player on mobile devices + if (!IS_IOS && !IS_ANDROID) { + SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay'); + } + + /** + * Call the update event for this Slider when this event happens on the player. + * + * @type {string} + */ + SeekBar.prototype.playerEvent = 'timeupdate'; + + Component.registerComponent('SeekBar', SeekBar); + + /** + * @file progress-control.js + */ + + /** + * The Progress Control component contains the seek bar, load progress, + * and play progress. + * + * @extends Component + */ + + var ProgressControl = function (_Component) { + inherits(ProgressControl, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function ProgressControl(player, options) { + classCallCheck(this, ProgressControl); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.handleMouseMove = throttle(bind(_this, _this.handleMouseMove), 25); + _this.throttledHandleMouseSeek = throttle(bind(_this, _this.handleMouseSeek), 25); + + _this.enable(); + return _this; + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + ProgressControl.prototype.createEl = function createEl$$1() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-progress-control vjs-control' + }); + }; + + /** + * When the mouse moves over the `ProgressControl`, the pointer position + * gets passed down to the `MouseTimeDisplay` component. + * + * @param {EventTarget~Event} event + * The `mousemove` event that caused this function to run. + * + * @listen mousemove + */ + + + ProgressControl.prototype.handleMouseMove = function handleMouseMove(event) { + var seekBar = this.getChild('seekBar'); + + if (seekBar) { + var mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay'); + var seekBarEl = seekBar.el(); + var seekBarRect = getBoundingClientRect(seekBarEl); + var seekBarPoint = getPointerPosition(seekBarEl, event).x; + + // The default skin has a gap on either side of the `SeekBar`. This means + // that it's possible to trigger this behavior outside the boundaries of + // the `SeekBar`. This ensures we stay within it at all times. + if (seekBarPoint > 1) { + seekBarPoint = 1; + } else if (seekBarPoint < 0) { + seekBarPoint = 0; + } + + if (mouseTimeDisplay) { + mouseTimeDisplay.update(seekBarRect, seekBarPoint); + } + } + }; + + /** + * A throttled version of the {@link ProgressControl#handleMouseSeek} listener. + * + * @method ProgressControl#throttledHandleMouseSeek + * @param {EventTarget~Event} event + * The `mousemove` event that caused this function to run. + * + * @listen mousemove + * @listen touchmove + */ + + /** + * Handle `mousemove` or `touchmove` events on the `ProgressControl`. + * + * @param {EventTarget~Event} event + * `mousedown` or `touchstart` event that triggered this function + * + * @listens mousemove + * @listens touchmove + */ + + + ProgressControl.prototype.handleMouseSeek = function handleMouseSeek(event) { + var seekBar = this.getChild('seekBar'); + + if (seekBar) { + seekBar.handleMouseMove(event); + } + }; + + /** + * Are controls are currently enabled for this progress control. + * + * @return {boolean} + * true if controls are enabled, false otherwise + */ + + + ProgressControl.prototype.enabled = function enabled() { + return this.enabled_; + }; + + /** + * Disable all controls on the progress control and its children + */ + + + ProgressControl.prototype.disable = function disable() { + this.children().forEach(function (child) { + return child.disable && child.disable(); + }); + + if (!this.enabled()) { + return; + } + + this.off(['mousedown', 'touchstart'], this.handleMouseDown); + this.off(this.el_, 'mousemove', this.handleMouseMove); + this.handleMouseUp(); + + this.addClass('disabled'); + + this.enabled_ = false; + }; + + /** + * Enable all controls on the progress control and its children + */ + + + ProgressControl.prototype.enable = function enable() { + this.children().forEach(function (child) { + return child.enable && child.enable(); + }); + + if (this.enabled()) { + return; + } + + this.on(['mousedown', 'touchstart'], this.handleMouseDown); + this.on(this.el_, 'mousemove', this.handleMouseMove); + this.removeClass('disabled'); + + this.enabled_ = true; + }; + + /** + * Handle `mousedown` or `touchstart` events on the `ProgressControl`. + * + * @param {EventTarget~Event} event + * `mousedown` or `touchstart` event that triggered this function + * + * @listens mousedown + * @listens touchstart + */ + + + ProgressControl.prototype.handleMouseDown = function handleMouseDown(event) { + var doc = this.el_.ownerDocument; + var seekBar = this.getChild('seekBar'); + + if (seekBar) { + seekBar.handleMouseDown(event); + } + + this.on(doc, 'mousemove', this.throttledHandleMouseSeek); + this.on(doc, 'touchmove', this.throttledHandleMouseSeek); + this.on(doc, 'mouseup', this.handleMouseUp); + this.on(doc, 'touchend', this.handleMouseUp); + }; + + /** + * Handle `mouseup` or `touchend` events on the `ProgressControl`. + * + * @param {EventTarget~Event} event + * `mouseup` or `touchend` event that triggered this function. + * + * @listens touchend + * @listens mouseup + */ + + + ProgressControl.prototype.handleMouseUp = function handleMouseUp(event) { + var doc = this.el_.ownerDocument; + var seekBar = this.getChild('seekBar'); + + if (seekBar) { + seekBar.handleMouseUp(event); + } + + this.off(doc, 'mousemove', this.throttledHandleMouseSeek); + this.off(doc, 'touchmove', this.throttledHandleMouseSeek); + this.off(doc, 'mouseup', this.handleMouseUp); + this.off(doc, 'touchend', this.handleMouseUp); + }; + + return ProgressControl; + }(Component); + + /** + * Default options for `ProgressControl` + * + * @type {Object} + * @private + */ + + + ProgressControl.prototype.options_ = { + children: ['seekBar'] + }; + + Component.registerComponent('ProgressControl', ProgressControl); + + /** + * @file fullscreen-toggle.js + */ + + /** + * Toggle fullscreen video + * + * @extends Button + */ + + var FullscreenToggle = function (_Button) { + inherits(FullscreenToggle, _Button); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function FullscreenToggle(player, options) { + classCallCheck(this, FullscreenToggle); + + var _this = possibleConstructorReturn(this, _Button.call(this, player, options)); + + _this.on(player, 'fullscreenchange', _this.handleFullscreenChange); + + if (document_1[FullscreenApi.fullscreenEnabled] === false) { + _this.disable(); + } + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + FullscreenToggle.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-fullscreen-control ' + _Button.prototype.buildCSSClass.call(this); + }; + + /** + * Handles fullscreenchange on the player and change control text accordingly. + * + * @param {EventTarget~Event} [event] + * The {@link Player#fullscreenchange} event that caused this function to be + * called. + * + * @listens Player#fullscreenchange + */ + + + FullscreenToggle.prototype.handleFullscreenChange = function handleFullscreenChange(event) { + if (this.player_.isFullscreen()) { + this.controlText('Non-Fullscreen'); + } else { + this.controlText('Fullscreen'); + } + }; + + /** + * This gets called when an `FullscreenToggle` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + FullscreenToggle.prototype.handleClick = function handleClick(event) { + if (!this.player_.isFullscreen()) { + this.player_.requestFullscreen(); + } else { + this.player_.exitFullscreen(); + } + }; + + return FullscreenToggle; + }(Button); + + /** + * The text that should display over the `FullscreenToggle`s controls. Added for localization. + * + * @type {string} + * @private + */ + + + FullscreenToggle.prototype.controlText_ = 'Fullscreen'; + + Component.registerComponent('FullscreenToggle', FullscreenToggle); + + /** + * Check if volume control is supported and if it isn't hide the + * `Component` that was passed using the `vjs-hidden` class. + * + * @param {Component} self + * The component that should be hidden if volume is unsupported + * + * @param {Player} player + * A reference to the player + * + * @private + */ + var checkVolumeSupport = function checkVolumeSupport(self, player) { + // hide volume controls when they're not supported by the current tech + if (player.tech_ && !player.tech_.featuresVolumeControl) { + self.addClass('vjs-hidden'); + } + + self.on(player, 'loadstart', function () { + if (!player.tech_.featuresVolumeControl) { + self.addClass('vjs-hidden'); + } else { + self.removeClass('vjs-hidden'); + } + }); + }; + + /** + * @file volume-level.js + */ + + /** + * Shows volume level + * + * @extends Component + */ + + var VolumeLevel = function (_Component) { + inherits(VolumeLevel, _Component); + + function VolumeLevel() { + classCallCheck(this, VolumeLevel); + return possibleConstructorReturn(this, _Component.apply(this, arguments)); + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + VolumeLevel.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-volume-level', + innerHTML: '<span class="vjs-control-text"></span>' + }); + }; + + return VolumeLevel; + }(Component); + + Component.registerComponent('VolumeLevel', VolumeLevel); + + /** + * @file volume-bar.js + */ + + /** + * The bar that contains the volume level and can be clicked on to adjust the level + * + * @extends Slider + */ + + var VolumeBar = function (_Slider) { + inherits(VolumeBar, _Slider); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function VolumeBar(player, options) { + classCallCheck(this, VolumeBar); + + var _this = possibleConstructorReturn(this, _Slider.call(this, player, options)); + + _this.on('slideractive', _this.updateLastVolume_); + _this.on(player, 'volumechange', _this.updateARIAAttributes); + player.ready(function () { + return _this.updateARIAAttributes(); + }); + return _this; + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + VolumeBar.prototype.createEl = function createEl$$1() { + return _Slider.prototype.createEl.call(this, 'div', { + className: 'vjs-volume-bar vjs-slider-bar' + }, { + 'aria-label': this.localize('Volume Level'), + 'aria-live': 'polite' + }); + }; + + /** + * Handle mouse down on volume bar + * + * @param {EventTarget~Event} event + * The `mousedown` event that caused this to run. + * + * @listens mousedown + */ + + + VolumeBar.prototype.handleMouseDown = function handleMouseDown(event) { + if (!isSingleLeftClick(event)) { + return; + } + + _Slider.prototype.handleMouseDown.call(this, event); + }; + + /** + * Handle movement events on the {@link VolumeMenuButton}. + * + * @param {EventTarget~Event} event + * The event that caused this function to run. + * + * @listens mousemove + */ + + + VolumeBar.prototype.handleMouseMove = function handleMouseMove(event) { + if (!isSingleLeftClick(event)) { + return; + } + + this.checkMuted(); + this.player_.volume(this.calculateDistance(event)); + }; + + /** + * If the player is muted unmute it. + */ + + + VolumeBar.prototype.checkMuted = function checkMuted() { + if (this.player_.muted()) { + this.player_.muted(false); + } + }; + + /** + * Get percent of volume level + * + * @return {number} + * Volume level percent as a decimal number. + */ + + + VolumeBar.prototype.getPercent = function getPercent() { + if (this.player_.muted()) { + return 0; + } + return this.player_.volume(); + }; + + /** + * Increase volume level for keyboard users + */ + + + VolumeBar.prototype.stepForward = function stepForward() { + this.checkMuted(); + this.player_.volume(this.player_.volume() + 0.1); + }; + + /** + * Decrease volume level for keyboard users + */ + + + VolumeBar.prototype.stepBack = function stepBack() { + this.checkMuted(); + this.player_.volume(this.player_.volume() - 0.1); + }; + + /** + * Update ARIA accessibility attributes + * + * @param {EventTarget~Event} [event] + * The `volumechange` event that caused this function to run. + * + * @listens Player#volumechange + */ + + + VolumeBar.prototype.updateARIAAttributes = function updateARIAAttributes(event) { + var ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_(); + + this.el_.setAttribute('aria-valuenow', ariaValue); + this.el_.setAttribute('aria-valuetext', ariaValue + '%'); + }; + + /** + * Returns the current value of the player volume as a percentage + * + * @private + */ + + + VolumeBar.prototype.volumeAsPercentage_ = function volumeAsPercentage_() { + return Math.round(this.player_.volume() * 100); + }; + + /** + * When user starts dragging the VolumeBar, store the volume and listen for + * the end of the drag. When the drag ends, if the volume was set to zero, + * set lastVolume to the stored volume. + * + * @listens slideractive + * @private + */ + + + VolumeBar.prototype.updateLastVolume_ = function updateLastVolume_() { + var _this2 = this; + + var volumeBeforeDrag = this.player_.volume(); + + this.one('sliderinactive', function () { + if (_this2.player_.volume() === 0) { + _this2.player_.lastVolume_(volumeBeforeDrag); + } + }); + }; + + return VolumeBar; + }(Slider); + + /** + * Default options for the `VolumeBar` + * + * @type {Object} + * @private + */ + + + VolumeBar.prototype.options_ = { + children: ['volumeLevel'], + barName: 'volumeLevel' + }; + + /** + * Call the update event for this Slider when this event happens on the player. + * + * @type {string} + */ + VolumeBar.prototype.playerEvent = 'volumechange'; + + Component.registerComponent('VolumeBar', VolumeBar); + + /** + * @file volume-control.js + */ + + /** + * The component for controlling the volume level + * + * @extends Component + */ + + var VolumeControl = function (_Component) { + inherits(VolumeControl, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options={}] + * The key/value store of player options. + */ + function VolumeControl(player) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + classCallCheck(this, VolumeControl); + + options.vertical = options.vertical || false; + + // Pass the vertical option down to the VolumeBar if + // the VolumeBar is turned on. + if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) { + options.volumeBar = options.volumeBar || {}; + options.volumeBar.vertical = options.vertical; + } + + // hide this control if volume support is missing + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + checkVolumeSupport(_this, player); + + _this.throttledHandleMouseMove = throttle(bind(_this, _this.handleMouseMove), 25); + + _this.on('mousedown', _this.handleMouseDown); + _this.on('touchstart', _this.handleMouseDown); + + // while the slider is active (the mouse has been pressed down and + // is dragging) or in focus we do not want to hide the VolumeBar + _this.on(_this.volumeBar, ['focus', 'slideractive'], function () { + _this.volumeBar.addClass('vjs-slider-active'); + _this.addClass('vjs-slider-active'); + _this.trigger('slideractive'); + }); + + _this.on(_this.volumeBar, ['blur', 'sliderinactive'], function () { + _this.volumeBar.removeClass('vjs-slider-active'); + _this.removeClass('vjs-slider-active'); + _this.trigger('sliderinactive'); + }); + return _this; + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + VolumeControl.prototype.createEl = function createEl() { + var orientationClass = 'vjs-volume-horizontal'; + + if (this.options_.vertical) { + orientationClass = 'vjs-volume-vertical'; + } + + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-volume-control vjs-control ' + orientationClass + }); + }; + + /** + * Handle `mousedown` or `touchstart` events on the `VolumeControl`. + * + * @param {EventTarget~Event} event + * `mousedown` or `touchstart` event that triggered this function + * + * @listens mousedown + * @listens touchstart + */ + + + VolumeControl.prototype.handleMouseDown = function handleMouseDown(event) { + var doc = this.el_.ownerDocument; + + this.on(doc, 'mousemove', this.throttledHandleMouseMove); + this.on(doc, 'touchmove', this.throttledHandleMouseMove); + this.on(doc, 'mouseup', this.handleMouseUp); + this.on(doc, 'touchend', this.handleMouseUp); + }; + + /** + * Handle `mouseup` or `touchend` events on the `VolumeControl`. + * + * @param {EventTarget~Event} event + * `mouseup` or `touchend` event that triggered this function. + * + * @listens touchend + * @listens mouseup + */ + + + VolumeControl.prototype.handleMouseUp = function handleMouseUp(event) { + var doc = this.el_.ownerDocument; + + this.off(doc, 'mousemove', this.throttledHandleMouseMove); + this.off(doc, 'touchmove', this.throttledHandleMouseMove); + this.off(doc, 'mouseup', this.handleMouseUp); + this.off(doc, 'touchend', this.handleMouseUp); + }; + + /** + * Handle `mousedown` or `touchstart` events on the `VolumeControl`. + * + * @param {EventTarget~Event} event + * `mousedown` or `touchstart` event that triggered this function + * + * @listens mousedown + * @listens touchstart + */ + + + VolumeControl.prototype.handleMouseMove = function handleMouseMove(event) { + this.volumeBar.handleMouseMove(event); + }; + + return VolumeControl; + }(Component); + + /** + * Default options for the `VolumeControl` + * + * @type {Object} + * @private + */ + + + VolumeControl.prototype.options_ = { + children: ['volumeBar'] + }; + + Component.registerComponent('VolumeControl', VolumeControl); + + /** + * Check if muting volume is supported and if it isn't hide the mute toggle + * button. + * + * @param {Component} self + * A reference to the mute toggle button + * + * @param {Player} player + * A reference to the player + * + * @private + */ + var checkMuteSupport = function checkMuteSupport(self, player) { + // hide mute toggle button if it's not supported by the current tech + if (player.tech_ && !player.tech_.featuresMuteControl) { + self.addClass('vjs-hidden'); + } + + self.on(player, 'loadstart', function () { + if (!player.tech_.featuresMuteControl) { + self.addClass('vjs-hidden'); + } else { + self.removeClass('vjs-hidden'); + } + }); + }; + + /** + * @file mute-toggle.js + */ + + /** + * A button component for muting the audio. + * + * @extends Button + */ + + var MuteToggle = function (_Button) { + inherits(MuteToggle, _Button); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function MuteToggle(player, options) { + classCallCheck(this, MuteToggle); + + // hide this control if volume support is missing + var _this = possibleConstructorReturn(this, _Button.call(this, player, options)); + + checkMuteSupport(_this, player); + + _this.on(player, ['loadstart', 'volumechange'], _this.update); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + MuteToggle.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-mute-control ' + _Button.prototype.buildCSSClass.call(this); + }; + + /** + * This gets called when an `MuteToggle` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + MuteToggle.prototype.handleClick = function handleClick(event) { + var vol = this.player_.volume(); + var lastVolume = this.player_.lastVolume_(); + + if (vol === 0) { + var volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume; + + this.player_.volume(volumeToSet); + this.player_.muted(false); + } else { + this.player_.muted(this.player_.muted() ? false : true); + } + }; + + /** + * Update the `MuteToggle` button based on the state of `volume` and `muted` + * on the player. + * + * @param {EventTarget~Event} [event] + * The {@link Player#loadstart} event if this function was called + * through an event. + * + * @listens Player#loadstart + * @listens Player#volumechange + */ + + + MuteToggle.prototype.update = function update(event) { + this.updateIcon_(); + this.updateControlText_(); + }; + + /** + * Update the appearance of the `MuteToggle` icon. + * + * Possible states (given `level` variable below): + * - 0: crossed out + * - 1: zero bars of volume + * - 2: one bar of volume + * - 3: two bars of volume + * + * @private + */ + + + MuteToggle.prototype.updateIcon_ = function updateIcon_() { + var vol = this.player_.volume(); + var level = 3; + + // in iOS when a player is loaded with muted attribute + // and volume is changed with a native mute button + // we want to make sure muted state is updated + if (IS_IOS) { + this.player_.muted(this.player_.tech_.el_.muted); + } + + if (vol === 0 || this.player_.muted()) { + level = 0; + } else if (vol < 0.33) { + level = 1; + } else if (vol < 0.67) { + level = 2; + } + + // TODO improve muted icon classes + for (var i = 0; i < 4; i++) { + removeClass(this.el_, 'vjs-vol-' + i); + } + addClass(this.el_, 'vjs-vol-' + level); + }; + + /** + * If `muted` has changed on the player, update the control text + * (`title` attribute on `vjs-mute-control` element and content of + * `vjs-control-text` element). + * + * @private + */ + + + MuteToggle.prototype.updateControlText_ = function updateControlText_() { + var soundOff = this.player_.muted() || this.player_.volume() === 0; + var text = soundOff ? 'Unmute' : 'Mute'; + + if (this.controlText() !== text) { + this.controlText(text); + } + }; + + return MuteToggle; + }(Button); + + /** + * The text that should display over the `MuteToggle`s controls. Added for localization. + * + * @type {string} + * @private + */ + + + MuteToggle.prototype.controlText_ = 'Mute'; + + Component.registerComponent('MuteToggle', MuteToggle); + + /** + * @file volume-control.js + */ + + /** + * A Component to contain the MuteToggle and VolumeControl so that + * they can work together. + * + * @extends Component + */ + + var VolumePanel = function (_Component) { + inherits(VolumePanel, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options={}] + * The key/value store of player options. + */ + function VolumePanel(player) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + classCallCheck(this, VolumePanel); + + if (typeof options.inline !== 'undefined') { + options.inline = options.inline; + } else { + options.inline = true; + } + + // pass the inline option down to the VolumeControl as vertical if + // the VolumeControl is on. + if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) { + options.volumeControl = options.volumeControl || {}; + options.volumeControl.vertical = !options.inline; + } + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.on(player, ['loadstart'], _this.volumePanelState_); + + // while the slider is active (the mouse has been pressed down and + // is dragging) we do not want to hide the VolumeBar + _this.on(_this.volumeControl, ['slideractive'], _this.sliderActive_); + + _this.on(_this.volumeControl, ['sliderinactive'], _this.sliderInactive_); + return _this; + } + + /** + * Add vjs-slider-active class to the VolumePanel + * + * @listens VolumeControl#slideractive + * @private + */ + + + VolumePanel.prototype.sliderActive_ = function sliderActive_() { + this.addClass('vjs-slider-active'); + }; + + /** + * Removes vjs-slider-active class to the VolumePanel + * + * @listens VolumeControl#sliderinactive + * @private + */ + + + VolumePanel.prototype.sliderInactive_ = function sliderInactive_() { + this.removeClass('vjs-slider-active'); + }; + + /** + * Adds vjs-hidden or vjs-mute-toggle-only to the VolumePanel + * depending on MuteToggle and VolumeControl state + * + * @listens Player#loadstart + * @private + */ + + + VolumePanel.prototype.volumePanelState_ = function volumePanelState_() { + // hide volume panel if neither volume control or mute toggle + // are displayed + if (this.volumeControl.hasClass('vjs-hidden') && this.muteToggle.hasClass('vjs-hidden')) { + this.addClass('vjs-hidden'); + } + + // if only mute toggle is visible we don't want + // volume panel expanding when hovered or active + if (this.volumeControl.hasClass('vjs-hidden') && !this.muteToggle.hasClass('vjs-hidden')) { + this.addClass('vjs-mute-toggle-only'); + } + }; + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + VolumePanel.prototype.createEl = function createEl() { + var orientationClass = 'vjs-volume-panel-horizontal'; + + if (!this.options_.inline) { + orientationClass = 'vjs-volume-panel-vertical'; + } + + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-volume-panel vjs-control ' + orientationClass + }); + }; + + return VolumePanel; + }(Component); + + /** + * Default options for the `VolumeControl` + * + * @type {Object} + * @private + */ + + + VolumePanel.prototype.options_ = { + children: ['muteToggle', 'volumeControl'] + }; + + Component.registerComponent('VolumePanel', VolumePanel); + + /** + * @file menu.js + */ + + /** + * The Menu component is used to build popup menus, including subtitle and + * captions selection menus. + * + * @extends Component + */ + + var Menu = function (_Component) { + inherits(Menu, _Component); + + /** + * Create an instance of this class. + * + * @param {Player} player + * the player that this component should attach to + * + * @param {Object} [options] + * Object of option names and values + * + */ + function Menu(player, options) { + classCallCheck(this, Menu); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + if (options) { + _this.menuButton_ = options.menuButton; + } + + _this.focusedChild_ = -1; + + _this.on('keydown', _this.handleKeyPress); + return _this; + } + + /** + * Add a {@link MenuItem} to the menu. + * + * @param {Object|string} component + * The name or instance of the `MenuItem` to add. + * + */ + + + Menu.prototype.addItem = function addItem(component) { + this.addChild(component); + component.on('click', bind(this, function (event) { + // Unpress the associated MenuButton, and move focus back to it + if (this.menuButton_) { + this.menuButton_.unpressButton(); + + // don't focus menu button if item is a caption settings item + // because focus will move elsewhere + if (component.name() !== 'CaptionSettingsMenuItem') { + this.menuButton_.focus(); + } + } + })); + }; + + /** + * Create the `Menu`s DOM element. + * + * @return {Element} + * the element that was created + */ + + + Menu.prototype.createEl = function createEl$$1() { + var contentElType = this.options_.contentElType || 'ul'; + + this.contentEl_ = createEl(contentElType, { + className: 'vjs-menu-content' + }); + + this.contentEl_.setAttribute('role', 'menu'); + + var el = _Component.prototype.createEl.call(this, 'div', { + append: this.contentEl_, + className: 'vjs-menu' + }); + + el.appendChild(this.contentEl_); + + // Prevent clicks from bubbling up. Needed for Menu Buttons, + // where a click on the parent is significant + on(el, 'click', function (event) { + event.preventDefault(); + event.stopImmediatePropagation(); + }); + + return el; + }; + + Menu.prototype.dispose = function dispose() { + this.contentEl_ = null; + + _Component.prototype.dispose.call(this); + }; + + /** + * Handle a `keydown` event on this menu. This listener is added in the constructor. + * + * @param {EventTarget~Event} event + * A `keydown` event that happened on the menu. + * + * @listens keydown + */ + + + Menu.prototype.handleKeyPress = function handleKeyPress(event) { + // Left and Down Arrows + if (event.which === 37 || event.which === 40) { + event.preventDefault(); + this.stepForward(); + + // Up and Right Arrows + } else if (event.which === 38 || event.which === 39) { + event.preventDefault(); + this.stepBack(); + } + }; + + /** + * Move to next (lower) menu item for keyboard users. + */ + + + Menu.prototype.stepForward = function stepForward() { + var stepChild = 0; + + if (this.focusedChild_ !== undefined) { + stepChild = this.focusedChild_ + 1; + } + this.focus(stepChild); + }; + + /** + * Move to previous (higher) menu item for keyboard users. + */ + + + Menu.prototype.stepBack = function stepBack() { + var stepChild = 0; + + if (this.focusedChild_ !== undefined) { + stepChild = this.focusedChild_ - 1; + } + this.focus(stepChild); + }; + + /** + * Set focus on a {@link MenuItem} in the `Menu`. + * + * @param {Object|string} [item=0] + * Index of child item set focus on. + */ + + + Menu.prototype.focus = function focus() { + var item = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0; + + var children = this.children().slice(); + var haveTitle = children.length && children[0].className && /vjs-menu-title/.test(children[0].className); + + if (haveTitle) { + children.shift(); + } + + if (children.length > 0) { + if (item < 0) { + item = 0; + } else if (item >= children.length) { + item = children.length - 1; + } + + this.focusedChild_ = item; + + children[item].el_.focus(); + } + }; + + return Menu; + }(Component); + + Component.registerComponent('Menu', Menu); + + /** + * @file menu-button.js + */ + + /** + * A `MenuButton` class for any popup {@link Menu}. + * + * @extends Component + */ + + var MenuButton = function (_Component) { + inherits(MenuButton, _Component); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options={}] + * The key/value store of player options. + */ + function MenuButton(player) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + classCallCheck(this, MenuButton); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options)); + + _this.menuButton_ = new Button(player, options); + + _this.menuButton_.controlText(_this.controlText_); + _this.menuButton_.el_.setAttribute('aria-haspopup', 'true'); + + // Add buildCSSClass values to the button, not the wrapper + var buttonClass = Button.prototype.buildCSSClass(); + + _this.menuButton_.el_.className = _this.buildCSSClass() + ' ' + buttonClass; + _this.menuButton_.removeClass('vjs-control'); + + _this.addChild(_this.menuButton_); + + _this.update(); + + _this.enabled_ = true; + + _this.on(_this.menuButton_, 'tap', _this.handleClick); + _this.on(_this.menuButton_, 'click', _this.handleClick); + _this.on(_this.menuButton_, 'focus', _this.handleFocus); + _this.on(_this.menuButton_, 'blur', _this.handleBlur); + + _this.on('keydown', _this.handleSubmenuKeyPress); + return _this; + } + + /** + * Update the menu based on the current state of its items. + */ + + + MenuButton.prototype.update = function update() { + var menu = this.createMenu(); + + if (this.menu) { + this.menu.dispose(); + this.removeChild(this.menu); + } + + this.menu = menu; + this.addChild(menu); + + /** + * Track the state of the menu button + * + * @type {Boolean} + * @private + */ + this.buttonPressed_ = false; + this.menuButton_.el_.setAttribute('aria-expanded', 'false'); + + if (this.items && this.items.length <= this.hideThreshold_) { + this.hide(); + } else { + this.show(); + } + }; + + /** + * Create the menu and add all items to it. + * + * @return {Menu} + * The constructed menu + */ + + + MenuButton.prototype.createMenu = function createMenu() { + var menu = new Menu(this.player_, { menuButton: this }); + + /** + * Hide the menu if the number of items is less than or equal to this threshold. This defaults + * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list + * it here because every time we run `createMenu` we need to reset the value. + * + * @protected + * @type {Number} + */ + this.hideThreshold_ = 0; + + // Add a title list item to the top + if (this.options_.title) { + var title = createEl('li', { + className: 'vjs-menu-title', + innerHTML: toTitleCase(this.options_.title), + tabIndex: -1 + }); + + this.hideThreshold_ += 1; + + menu.children_.unshift(title); + prependTo(title, menu.contentEl()); + } + + this.items = this.createItems(); + + if (this.items) { + // Add menu items to the menu + for (var i = 0; i < this.items.length; i++) { + menu.addItem(this.items[i]); + } + } + + return menu; + }; + + /** + * Create the list of menu items. Specific to each subclass. + * + * @abstract + */ + + + MenuButton.prototype.createItems = function createItems() {}; + + /** + * Create the `MenuButtons`s DOM element. + * + * @return {Element} + * The element that gets created. + */ + + + MenuButton.prototype.createEl = function createEl$$1() { + return _Component.prototype.createEl.call(this, 'div', { + className: this.buildWrapperCSSClass() + }, {}); + }; + + /** + * Allow sub components to stack CSS class names for the wrapper element + * + * @return {string} + * The constructed wrapper DOM `className` + */ + + + MenuButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + var menuButtonClass = 'vjs-menu-button'; + + // If the inline option is passed, we want to use different styles altogether. + if (this.options_.inline === true) { + menuButtonClass += '-inline'; + } else { + menuButtonClass += '-popup'; + } + + // TODO: Fix the CSS so that this isn't necessary + var buttonClass = Button.prototype.buildCSSClass(); + + return 'vjs-menu-button ' + menuButtonClass + ' ' + buttonClass + ' ' + _Component.prototype.buildCSSClass.call(this); + }; + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + MenuButton.prototype.buildCSSClass = function buildCSSClass() { + var menuButtonClass = 'vjs-menu-button'; + + // If the inline option is passed, we want to use different styles altogether. + if (this.options_.inline === true) { + menuButtonClass += '-inline'; + } else { + menuButtonClass += '-popup'; + } + + return 'vjs-menu-button ' + menuButtonClass + ' ' + _Component.prototype.buildCSSClass.call(this); + }; + + /** + * Get or set the localized control text that will be used for accessibility. + * + * > NOTE: This will come from the internal `menuButton_` element. + * + * @param {string} [text] + * Control text for element. + * + * @param {Element} [el=this.menuButton_.el()] + * Element to set the title on. + * + * @return {string} + * - The control text when getting + */ + + + MenuButton.prototype.controlText = function controlText(text) { + var el = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : this.menuButton_.el(); + + return this.menuButton_.controlText(text, el); + }; + + /** + * Handle a click on a `MenuButton`. + * See {@link ClickableComponent#handleClick} for instances where this is called. + * + * @param {EventTarget~Event} event + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + MenuButton.prototype.handleClick = function handleClick(event) { + // When you click the button it adds focus, which will show the menu. + // So we'll remove focus when the mouse leaves the button. Focus is needed + // for tab navigation. + + this.one(this.menu.contentEl(), 'mouseleave', bind(this, function (e) { + this.unpressButton(); + this.el_.blur(); + })); + if (this.buttonPressed_) { + this.unpressButton(); + } else { + this.pressButton(); + } + }; + + /** + * Set the focus to the actual button, not to this element + */ + + + MenuButton.prototype.focus = function focus() { + this.menuButton_.focus(); + }; + + /** + * Remove the focus from the actual button, not this element + */ + + + MenuButton.prototype.blur = function blur() { + this.menuButton_.blur(); + }; + + /** + * This gets called when a `MenuButton` gains focus via a `focus` event. + * Turns on listening for `keydown` events. When they happen it + * calls `this.handleKeyPress`. + * + * @param {EventTarget~Event} event + * The `focus` event that caused this function to be called. + * + * @listens focus + */ + + + MenuButton.prototype.handleFocus = function handleFocus() { + on(document_1, 'keydown', bind(this, this.handleKeyPress)); + }; + + /** + * Called when a `MenuButton` loses focus. Turns off the listener for + * `keydown` events. Which Stops `this.handleKeyPress` from getting called. + * + * @param {EventTarget~Event} event + * The `blur` event that caused this function to be called. + * + * @listens blur + */ + + + MenuButton.prototype.handleBlur = function handleBlur() { + off(document_1, 'keydown', bind(this, this.handleKeyPress)); + }; + + /** + * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See + * {@link ClickableComponent#handleKeyPress} for instances where this is called. + * + * @param {EventTarget~Event} event + * The `keydown` event that caused this function to be called. + * + * @listens keydown + */ + + + MenuButton.prototype.handleKeyPress = function handleKeyPress(event) { + + // Escape (27) key or Tab (9) key unpress the 'button' + if (event.which === 27 || event.which === 9) { + if (this.buttonPressed_) { + this.unpressButton(); + } + // Don't preventDefault for Tab key - we still want to lose focus + if (event.which !== 9) { + event.preventDefault(); + // Set focus back to the menu button's button + this.menuButton_.el_.focus(); + } + // Up (38) key or Down (40) key press the 'button' + } else if (event.which === 38 || event.which === 40) { + if (!this.buttonPressed_) { + this.pressButton(); + event.preventDefault(); + } + } + }; + + /** + * Handle a `keydown` event on a sub-menu. The listener for this is added in + * the constructor. + * + * @param {EventTarget~Event} event + * Key press event + * + * @listens keydown + */ + + + MenuButton.prototype.handleSubmenuKeyPress = function handleSubmenuKeyPress(event) { + + // Escape (27) key or Tab (9) key unpress the 'button' + if (event.which === 27 || event.which === 9) { + if (this.buttonPressed_) { + this.unpressButton(); + } + // Don't preventDefault for Tab key - we still want to lose focus + if (event.which !== 9) { + event.preventDefault(); + // Set focus back to the menu button's button + this.menuButton_.el_.focus(); + } + } + }; + + /** + * Put the current `MenuButton` into a pressed state. + */ + + + MenuButton.prototype.pressButton = function pressButton() { + if (this.enabled_) { + this.buttonPressed_ = true; + this.menu.lockShowing(); + this.menuButton_.el_.setAttribute('aria-expanded', 'true'); + + // set the focus into the submenu, except on iOS where it is resulting in + // undesired scrolling behavior when the player is in an iframe + if (IS_IOS && isInFrame()) { + // Return early so that the menu isn't focused + return; + } + + this.menu.focus(); + } + }; + + /** + * Take the current `MenuButton` out of a pressed state. + */ + + + MenuButton.prototype.unpressButton = function unpressButton() { + if (this.enabled_) { + this.buttonPressed_ = false; + this.menu.unlockShowing(); + this.menuButton_.el_.setAttribute('aria-expanded', 'false'); + } + }; + + /** + * Disable the `MenuButton`. Don't allow it to be clicked. + */ + + + MenuButton.prototype.disable = function disable() { + this.unpressButton(); + + this.enabled_ = false; + this.addClass('vjs-disabled'); + + this.menuButton_.disable(); + }; + + /** + * Enable the `MenuButton`. Allow it to be clicked. + */ + + + MenuButton.prototype.enable = function enable() { + this.enabled_ = true; + this.removeClass('vjs-disabled'); + + this.menuButton_.enable(); + }; + + return MenuButton; + }(Component); + + Component.registerComponent('MenuButton', MenuButton); + + /** + * @file track-button.js + */ + + /** + * The base class for buttons that toggle specific track types (e.g. subtitles). + * + * @extends MenuButton + */ + + var TrackButton = function (_MenuButton) { + inherits(TrackButton, _MenuButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function TrackButton(player, options) { + classCallCheck(this, TrackButton); + + var tracks = options.tracks; + + var _this = possibleConstructorReturn(this, _MenuButton.call(this, player, options)); + + if (_this.items.length <= 1) { + _this.hide(); + } + + if (!tracks) { + return possibleConstructorReturn(_this); + } + + var updateHandler = bind(_this, _this.update); + + tracks.addEventListener('removetrack', updateHandler); + tracks.addEventListener('addtrack', updateHandler); + _this.player_.on('ready', updateHandler); + + _this.player_.on('dispose', function () { + tracks.removeEventListener('removetrack', updateHandler); + tracks.removeEventListener('addtrack', updateHandler); + }); + return _this; + } + + return TrackButton; + }(MenuButton); + + Component.registerComponent('TrackButton', TrackButton); + + /** + * @file menu-item.js + */ + + /** + * The component for a menu item. `<li>` + * + * @extends ClickableComponent + */ + + var MenuItem = function (_ClickableComponent) { + inherits(MenuItem, _ClickableComponent); + + /** + * Creates an instance of the this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options={}] + * The key/value store of player options. + * + */ + function MenuItem(player, options) { + classCallCheck(this, MenuItem); + + var _this = possibleConstructorReturn(this, _ClickableComponent.call(this, player, options)); + + _this.selectable = options.selectable; + _this.isSelected_ = options.selected || false; + _this.multiSelectable = options.multiSelectable; + + _this.selected(_this.isSelected_); + + if (_this.selectable) { + if (_this.multiSelectable) { + _this.el_.setAttribute('role', 'menuitemcheckbox'); + } else { + _this.el_.setAttribute('role', 'menuitemradio'); + } + } else { + _this.el_.setAttribute('role', 'menuitem'); + } + return _this; + } + + /** + * Create the `MenuItem's DOM element + * + * @param {string} [type=li] + * Element's node type, not actually used, always set to `li`. + * + * @param {Object} [props={}] + * An object of properties that should be set on the element + * + * @param {Object} [attrs={}] + * An object of attributes that should be set on the element + * + * @return {Element} + * The element that gets created. + */ + + + MenuItem.prototype.createEl = function createEl(type, props, attrs) { + // The control is textual, not just an icon + this.nonIconControl = true; + + return _ClickableComponent.prototype.createEl.call(this, 'li', assign({ + className: 'vjs-menu-item', + innerHTML: '<span class="vjs-menu-item-text">' + this.localize(this.options_.label) + '</span>', + tabIndex: -1 + }, props), attrs); + }; + + /** + * Any click on a `MenuItem` puts it into the selected state. + * See {@link ClickableComponent#handleClick} for instances where this is called. + * + * @param {EventTarget~Event} event + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + MenuItem.prototype.handleClick = function handleClick(event) { + this.selected(true); + }; + + /** + * Set the state for this menu item as selected or not. + * + * @param {boolean} selected + * if the menu item is selected or not + */ + + + MenuItem.prototype.selected = function selected(_selected) { + if (this.selectable) { + if (_selected) { + this.addClass('vjs-selected'); + this.el_.setAttribute('aria-checked', 'true'); + // aria-checked isn't fully supported by browsers/screen readers, + // so indicate selected state to screen reader in the control text. + this.controlText(', selected'); + this.isSelected_ = true; + } else { + this.removeClass('vjs-selected'); + this.el_.setAttribute('aria-checked', 'false'); + // Indicate un-selected state to screen reader + this.controlText(''); + this.isSelected_ = false; + } + } + }; + + return MenuItem; + }(ClickableComponent); + + Component.registerComponent('MenuItem', MenuItem); + + /** + * @file text-track-menu-item.js + */ + + /** + * The specific menu item type for selecting a language within a text track kind + * + * @extends MenuItem + */ + + var TextTrackMenuItem = function (_MenuItem) { + inherits(TextTrackMenuItem, _MenuItem); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function TextTrackMenuItem(player, options) { + classCallCheck(this, TextTrackMenuItem); + + var track = options.track; + var tracks = player.textTracks(); + + // Modify options for parent MenuItem class's init. + options.label = track.label || track.language || 'Unknown'; + options.selected = track.mode === 'showing'; + + var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options)); + + _this.track = track; + var changeHandler = function changeHandler() { + for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + + _this.handleTracksChange.apply(_this, args); + }; + var selectedLanguageChangeHandler = function selectedLanguageChangeHandler() { + for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) { + args[_key2] = arguments[_key2]; + } + + _this.handleSelectedLanguageChange.apply(_this, args); + }; + + player.on(['loadstart', 'texttrackchange'], changeHandler); + tracks.addEventListener('change', changeHandler); + tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler); + _this.on('dispose', function () { + player.off(['loadstart', 'texttrackchange'], changeHandler); + tracks.removeEventListener('change', changeHandler); + tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler); + }); + + // iOS7 doesn't dispatch change events to TextTrackLists when an + // associated track's mode changes. Without something like + // Object.observe() (also not present on iOS7), it's not + // possible to detect changes to the mode attribute and polyfill + // the change event. As a poor substitute, we manually dispatch + // change events whenever the controls modify the mode. + if (tracks.onchange === undefined) { + var event = void 0; + + _this.on(['tap', 'click'], function () { + if (_typeof(window_1.Event) !== 'object') { + // Android 2.3 throws an Illegal Constructor error for window.Event + try { + event = new window_1.Event('change'); + } catch (err) { + // continue regardless of error + } + } + + if (!event) { + event = document_1.createEvent('Event'); + event.initEvent('change', true, true); + } + + tracks.dispatchEvent(event); + }); + } + + // set the default state based on current tracks + _this.handleTracksChange(); + return _this; + } + + /** + * This gets called when an `TextTrackMenuItem` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} event + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + TextTrackMenuItem.prototype.handleClick = function handleClick(event) { + var kind = this.track.kind; + var kinds = this.track.kinds; + var tracks = this.player_.textTracks(); + + if (!kinds) { + kinds = [kind]; + } + + _MenuItem.prototype.handleClick.call(this, event); + + if (!tracks) { + return; + } + + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + + if (track === this.track && kinds.indexOf(track.kind) > -1) { + if (track.mode !== 'showing') { + track.mode = 'showing'; + } + } else if (track.mode !== 'disabled') { + track.mode = 'disabled'; + } + } + }; + + /** + * Handle text track list change + * + * @param {EventTarget~Event} event + * The `change` event that caused this function to be called. + * + * @listens TextTrackList#change + */ + + + TextTrackMenuItem.prototype.handleTracksChange = function handleTracksChange(event) { + var shouldBeSelected = this.track.mode === 'showing'; + + // Prevent redundant selected() calls because they may cause + // screen readers to read the appended control text unnecessarily + if (shouldBeSelected !== this.isSelected_) { + this.selected(shouldBeSelected); + } + }; + + TextTrackMenuItem.prototype.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) { + if (this.track.mode === 'showing') { + var selectedLanguage = this.player_.cache_.selectedLanguage; + + // Don't replace the kind of track across the same language + if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) { + return; + } + + this.player_.cache_.selectedLanguage = { + enabled: true, + language: this.track.language, + kind: this.track.kind + }; + } + }; + + TextTrackMenuItem.prototype.dispose = function dispose() { + // remove reference to track object on dispose + this.track = null; + + _MenuItem.prototype.dispose.call(this); + }; + + return TextTrackMenuItem; + }(MenuItem); + + Component.registerComponent('TextTrackMenuItem', TextTrackMenuItem); + + /** + * @file off-text-track-menu-item.js + */ + + /** + * A special menu item for turning of a specific type of text track + * + * @extends TextTrackMenuItem + */ + + var OffTextTrackMenuItem = function (_TextTrackMenuItem) { + inherits(OffTextTrackMenuItem, _TextTrackMenuItem); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function OffTextTrackMenuItem(player, options) { + classCallCheck(this, OffTextTrackMenuItem); + + // Create pseudo track info + // Requires options['kind'] + options.track = { + player: player, + kind: options.kind, + kinds: options.kinds, + default: false, + mode: 'disabled' + }; + + if (!options.kinds) { + options.kinds = [options.kind]; + } + + if (options.label) { + options.track.label = options.label; + } else { + options.track.label = options.kinds.join(' and ') + ' off'; + } + + // MenuItem is selectable + options.selectable = true; + // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time) + options.multiSelectable = false; + + return possibleConstructorReturn(this, _TextTrackMenuItem.call(this, player, options)); + } + + /** + * Handle text track change + * + * @param {EventTarget~Event} event + * The event that caused this function to run + */ + + + OffTextTrackMenuItem.prototype.handleTracksChange = function handleTracksChange(event) { + var tracks = this.player().textTracks(); + var shouldBeSelected = true; + + for (var i = 0, l = tracks.length; i < l; i++) { + var track = tracks[i]; + + if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') { + shouldBeSelected = false; + break; + } + } + + // Prevent redundant selected() calls because they may cause + // screen readers to read the appended control text unnecessarily + if (shouldBeSelected !== this.isSelected_) { + this.selected(shouldBeSelected); + } + }; + + OffTextTrackMenuItem.prototype.handleSelectedLanguageChange = function handleSelectedLanguageChange(event) { + var tracks = this.player().textTracks(); + var allHidden = true; + + for (var i = 0, l = tracks.length; i < l; i++) { + var track = tracks[i]; + + if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') { + allHidden = false; + break; + } + } + + if (allHidden) { + this.player_.cache_.selectedLanguage = { + enabled: false + }; + } + }; + + return OffTextTrackMenuItem; + }(TextTrackMenuItem); + + Component.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem); + + /** + * @file text-track-button.js + */ + + /** + * The base class for buttons that toggle specific text track types (e.g. subtitles) + * + * @extends MenuButton + */ + + var TextTrackButton = function (_TrackButton) { + inherits(TextTrackButton, _TrackButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options={}] + * The key/value store of player options. + */ + function TextTrackButton(player) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + classCallCheck(this, TextTrackButton); + + options.tracks = player.textTracks(); + + return possibleConstructorReturn(this, _TrackButton.call(this, player, options)); + } + + /** + * Create a menu item for each text track + * + * @param {TextTrackMenuItem[]} [items=[]] + * Existing array of items to use during creation + * + * @return {TextTrackMenuItem[]} + * Array of menu items that were created + */ + + + TextTrackButton.prototype.createItems = function createItems() { + var items = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : []; + var TrackMenuItem = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : TextTrackMenuItem; + + + // Label is an override for the [track] off label + // USed to localise captions/subtitles + var label = void 0; + + if (this.label_) { + label = this.label_ + ' off'; + } + // Add an OFF menu item to turn all tracks off + items.push(new OffTextTrackMenuItem(this.player_, { + kinds: this.kinds_, + kind: this.kind_, + label: label + })); + + this.hideThreshold_ += 1; + + var tracks = this.player_.textTracks(); + + if (!Array.isArray(this.kinds_)) { + this.kinds_ = [this.kind_]; + } + + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + + // only add tracks that are of an appropriate kind and have a label + if (this.kinds_.indexOf(track.kind) > -1) { + + var item = new TrackMenuItem(this.player_, { + track: track, + // MenuItem is selectable + selectable: true, + // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time) + multiSelectable: false + }); + + item.addClass('vjs-' + track.kind + '-menu-item'); + items.push(item); + } + } + + return items; + }; + + return TextTrackButton; + }(TrackButton); + + Component.registerComponent('TextTrackButton', TextTrackButton); + + /** + * @file chapters-track-menu-item.js + */ + + /** + * The chapter track menu item + * + * @extends MenuItem + */ + + var ChaptersTrackMenuItem = function (_MenuItem) { + inherits(ChaptersTrackMenuItem, _MenuItem); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function ChaptersTrackMenuItem(player, options) { + classCallCheck(this, ChaptersTrackMenuItem); + + var track = options.track; + var cue = options.cue; + var currentTime = player.currentTime(); + + // Modify options for parent MenuItem class's init. + options.selectable = true; + options.multiSelectable = false; + options.label = cue.text; + options.selected = cue.startTime <= currentTime && currentTime < cue.endTime; + + var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options)); + + _this.track = track; + _this.cue = cue; + track.addEventListener('cuechange', bind(_this, _this.update)); + return _this; + } + + /** + * This gets called when an `ChaptersTrackMenuItem` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + ChaptersTrackMenuItem.prototype.handleClick = function handleClick(event) { + _MenuItem.prototype.handleClick.call(this); + this.player_.currentTime(this.cue.startTime); + this.update(this.cue.startTime); + }; + + /** + * Update chapter menu item + * + * @param {EventTarget~Event} [event] + * The `cuechange` event that caused this function to run. + * + * @listens TextTrack#cuechange + */ + + + ChaptersTrackMenuItem.prototype.update = function update(event) { + var cue = this.cue; + var currentTime = this.player_.currentTime(); + + // vjs.log(currentTime, cue.startTime); + this.selected(cue.startTime <= currentTime && currentTime < cue.endTime); + }; + + return ChaptersTrackMenuItem; + }(MenuItem); + + Component.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem); + + /** + * @file chapters-button.js + */ + + /** + * The button component for toggling and selecting chapters + * Chapters act much differently than other text tracks + * Cues are navigation vs. other tracks of alternative languages + * + * @extends TextTrackButton + */ + + var ChaptersButton = function (_TextTrackButton) { + inherits(ChaptersButton, _TextTrackButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} [ready] + * The function to call when this function is ready. + */ + function ChaptersButton(player, options, ready) { + classCallCheck(this, ChaptersButton); + return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready)); + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + ChaptersButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-chapters-button ' + _TextTrackButton.prototype.buildCSSClass.call(this); + }; + + ChaptersButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + return 'vjs-chapters-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this); + }; + + /** + * Update the menu based on the current state of its items. + * + * @param {EventTarget~Event} [event] + * An event that triggered this function to run. + * + * @listens TextTrackList#addtrack + * @listens TextTrackList#removetrack + * @listens TextTrackList#change + */ + + + ChaptersButton.prototype.update = function update(event) { + if (!this.track_ || event && (event.type === 'addtrack' || event.type === 'removetrack')) { + this.setTrack(this.findChaptersTrack()); + } + _TextTrackButton.prototype.update.call(this); + }; + + /** + * Set the currently selected track for the chapters button. + * + * @param {TextTrack} track + * The new track to select. Nothing will change if this is the currently selected + * track. + */ + + + ChaptersButton.prototype.setTrack = function setTrack(track) { + if (this.track_ === track) { + return; + } + + if (!this.updateHandler_) { + this.updateHandler_ = this.update.bind(this); + } + + // here this.track_ refers to the old track instance + if (this.track_) { + var remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_); + + if (remoteTextTrackEl) { + remoteTextTrackEl.removeEventListener('load', this.updateHandler_); + } + + this.track_ = null; + } + + this.track_ = track; + + // here this.track_ refers to the new track instance + if (this.track_) { + this.track_.mode = 'hidden'; + + var _remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_); + + if (_remoteTextTrackEl) { + _remoteTextTrackEl.addEventListener('load', this.updateHandler_); + } + } + }; + + /** + * Find the track object that is currently in use by this ChaptersButton + * + * @return {TextTrack|undefined} + * The current track or undefined if none was found. + */ + + + ChaptersButton.prototype.findChaptersTrack = function findChaptersTrack() { + var tracks = this.player_.textTracks() || []; + + for (var i = tracks.length - 1; i >= 0; i--) { + // We will always choose the last track as our chaptersTrack + var track = tracks[i]; + + if (track.kind === this.kind_) { + return track; + } + } + }; + + /** + * Get the caption for the ChaptersButton based on the track label. This will also + * use the current tracks localized kind as a fallback if a label does not exist. + * + * @return {string} + * The tracks current label or the localized track kind. + */ + + + ChaptersButton.prototype.getMenuCaption = function getMenuCaption() { + if (this.track_ && this.track_.label) { + return this.track_.label; + } + return this.localize(toTitleCase(this.kind_)); + }; + + /** + * Create menu from chapter track + * + * @return {Menu} + * New menu for the chapter buttons + */ + + + ChaptersButton.prototype.createMenu = function createMenu() { + this.options_.title = this.getMenuCaption(); + return _TextTrackButton.prototype.createMenu.call(this); + }; + + /** + * Create a menu item for each text track + * + * @return {TextTrackMenuItem[]} + * Array of menu items + */ + + + ChaptersButton.prototype.createItems = function createItems() { + var items = []; + + if (!this.track_) { + return items; + } + + var cues = this.track_.cues; + + if (!cues) { + return items; + } + + for (var i = 0, l = cues.length; i < l; i++) { + var cue = cues[i]; + var mi = new ChaptersTrackMenuItem(this.player_, { track: this.track_, cue: cue }); + + items.push(mi); + } + + return items; + }; + + return ChaptersButton; + }(TextTrackButton); + + /** + * `kind` of TextTrack to look for to associate it with this menu. + * + * @type {string} + * @private + */ + + + ChaptersButton.prototype.kind_ = 'chapters'; + + /** + * The text that should display over the `ChaptersButton`s controls. Added for localization. + * + * @type {string} + * @private + */ + ChaptersButton.prototype.controlText_ = 'Chapters'; + + Component.registerComponent('ChaptersButton', ChaptersButton); + + /** + * @file descriptions-button.js + */ + + /** + * The button component for toggling and selecting descriptions + * + * @extends TextTrackButton + */ + + var DescriptionsButton = function (_TextTrackButton) { + inherits(DescriptionsButton, _TextTrackButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} [ready] + * The function to call when this component is ready. + */ + function DescriptionsButton(player, options, ready) { + classCallCheck(this, DescriptionsButton); + + var _this = possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready)); + + var tracks = player.textTracks(); + var changeHandler = bind(_this, _this.handleTracksChange); + + tracks.addEventListener('change', changeHandler); + _this.on('dispose', function () { + tracks.removeEventListener('change', changeHandler); + }); + return _this; + } + + /** + * Handle text track change + * + * @param {EventTarget~Event} event + * The event that caused this function to run + * + * @listens TextTrackList#change + */ + + + DescriptionsButton.prototype.handleTracksChange = function handleTracksChange(event) { + var tracks = this.player().textTracks(); + var disabled = false; + + // Check whether a track of a different kind is showing + for (var i = 0, l = tracks.length; i < l; i++) { + var track = tracks[i]; + + if (track.kind !== this.kind_ && track.mode === 'showing') { + disabled = true; + break; + } + } + + // If another track is showing, disable this menu button + if (disabled) { + this.disable(); + } else { + this.enable(); + } + }; + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + DescriptionsButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-descriptions-button ' + _TextTrackButton.prototype.buildCSSClass.call(this); + }; + + DescriptionsButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + return 'vjs-descriptions-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this); + }; + + return DescriptionsButton; + }(TextTrackButton); + + /** + * `kind` of TextTrack to look for to associate it with this menu. + * + * @type {string} + * @private + */ + + + DescriptionsButton.prototype.kind_ = 'descriptions'; + + /** + * The text that should display over the `DescriptionsButton`s controls. Added for localization. + * + * @type {string} + * @private + */ + DescriptionsButton.prototype.controlText_ = 'Descriptions'; + + Component.registerComponent('DescriptionsButton', DescriptionsButton); + + /** + * @file subtitles-button.js + */ + + /** + * The button component for toggling and selecting subtitles + * + * @extends TextTrackButton + */ + + var SubtitlesButton = function (_TextTrackButton) { + inherits(SubtitlesButton, _TextTrackButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} [ready] + * The function to call when this component is ready. + */ + function SubtitlesButton(player, options, ready) { + classCallCheck(this, SubtitlesButton); + return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready)); + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + SubtitlesButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-subtitles-button ' + _TextTrackButton.prototype.buildCSSClass.call(this); + }; + + SubtitlesButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + return 'vjs-subtitles-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this); + }; + + return SubtitlesButton; + }(TextTrackButton); + + /** + * `kind` of TextTrack to look for to associate it with this menu. + * + * @type {string} + * @private + */ + + + SubtitlesButton.prototype.kind_ = 'subtitles'; + + /** + * The text that should display over the `SubtitlesButton`s controls. Added for localization. + * + * @type {string} + * @private + */ + SubtitlesButton.prototype.controlText_ = 'Subtitles'; + + Component.registerComponent('SubtitlesButton', SubtitlesButton); + + /** + * @file caption-settings-menu-item.js + */ + + /** + * The menu item for caption track settings menu + * + * @extends TextTrackMenuItem + */ + + var CaptionSettingsMenuItem = function (_TextTrackMenuItem) { + inherits(CaptionSettingsMenuItem, _TextTrackMenuItem); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function CaptionSettingsMenuItem(player, options) { + classCallCheck(this, CaptionSettingsMenuItem); + + options.track = { + player: player, + kind: options.kind, + label: options.kind + ' settings', + selectable: false, + default: false, + mode: 'disabled' + }; + + // CaptionSettingsMenuItem has no concept of 'selected' + options.selectable = false; + + options.name = 'CaptionSettingsMenuItem'; + + var _this = possibleConstructorReturn(this, _TextTrackMenuItem.call(this, player, options)); + + _this.addClass('vjs-texttrack-settings'); + _this.controlText(', opens ' + options.kind + ' settings dialog'); + return _this; + } + + /** + * This gets called when an `CaptionSettingsMenuItem` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + CaptionSettingsMenuItem.prototype.handleClick = function handleClick(event) { + this.player().getChild('textTrackSettings').open(); + }; + + return CaptionSettingsMenuItem; + }(TextTrackMenuItem); + + Component.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem); + + /** + * @file captions-button.js + */ + + /** + * The button component for toggling and selecting captions + * + * @extends TextTrackButton + */ + + var CaptionsButton = function (_TextTrackButton) { + inherits(CaptionsButton, _TextTrackButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} [ready] + * The function to call when this component is ready. + */ + function CaptionsButton(player, options, ready) { + classCallCheck(this, CaptionsButton); + return possibleConstructorReturn(this, _TextTrackButton.call(this, player, options, ready)); + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + CaptionsButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-captions-button ' + _TextTrackButton.prototype.buildCSSClass.call(this); + }; + + CaptionsButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + return 'vjs-captions-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this); + }; + + /** + * Create caption menu items + * + * @return {CaptionSettingsMenuItem[]} + * The array of current menu items. + */ + + + CaptionsButton.prototype.createItems = function createItems() { + var items = []; + + if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) { + items.push(new CaptionSettingsMenuItem(this.player_, { kind: this.kind_ })); + + this.hideThreshold_ += 1; + } + + return _TextTrackButton.prototype.createItems.call(this, items); + }; + + return CaptionsButton; + }(TextTrackButton); + + /** + * `kind` of TextTrack to look for to associate it with this menu. + * + * @type {string} + * @private + */ + + + CaptionsButton.prototype.kind_ = 'captions'; + + /** + * The text that should display over the `CaptionsButton`s controls. Added for localization. + * + * @type {string} + * @private + */ + CaptionsButton.prototype.controlText_ = 'Captions'; + + Component.registerComponent('CaptionsButton', CaptionsButton); + + /** + * @file subs-caps-menu-item.js + */ + + /** + * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles + * in the SubsCapsMenu. + * + * @extends TextTrackMenuItem + */ + + var SubsCapsMenuItem = function (_TextTrackMenuItem) { + inherits(SubsCapsMenuItem, _TextTrackMenuItem); + + function SubsCapsMenuItem() { + classCallCheck(this, SubsCapsMenuItem); + return possibleConstructorReturn(this, _TextTrackMenuItem.apply(this, arguments)); + } + + SubsCapsMenuItem.prototype.createEl = function createEl(type, props, attrs) { + var innerHTML = '<span class="vjs-menu-item-text">' + this.localize(this.options_.label); + + if (this.options_.track.kind === 'captions') { + innerHTML += '\n <span aria-hidden="true" class="vjs-icon-placeholder"></span>\n <span class="vjs-control-text"> ' + this.localize('Captions') + '</span>\n '; + } + + innerHTML += '</span>'; + + var el = _TextTrackMenuItem.prototype.createEl.call(this, type, assign({ + innerHTML: innerHTML + }, props), attrs); + + return el; + }; + + return SubsCapsMenuItem; + }(TextTrackMenuItem); + + Component.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem); + + /** + * @file sub-caps-button.js + */ + /** + * The button component for toggling and selecting captions and/or subtitles + * + * @extends TextTrackButton + */ + + var SubsCapsButton = function (_TextTrackButton) { + inherits(SubsCapsButton, _TextTrackButton); + + function SubsCapsButton(player) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + classCallCheck(this, SubsCapsButton); + + // Although North America uses "captions" in most cases for + // "captions and subtitles" other locales use "subtitles" + var _this = possibleConstructorReturn(this, _TextTrackButton.call(this, player, options)); + + _this.label_ = 'subtitles'; + if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(_this.player_.language_) > -1) { + _this.label_ = 'captions'; + } + _this.menuButton_.controlText(toTitleCase(_this.label_)); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + SubsCapsButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-subs-caps-button ' + _TextTrackButton.prototype.buildCSSClass.call(this); + }; + + SubsCapsButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + return 'vjs-subs-caps-button ' + _TextTrackButton.prototype.buildWrapperCSSClass.call(this); + }; + + /** + * Create caption/subtitles menu items + * + * @return {CaptionSettingsMenuItem[]} + * The array of current menu items. + */ + + + SubsCapsButton.prototype.createItems = function createItems() { + var items = []; + + if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) { + items.push(new CaptionSettingsMenuItem(this.player_, { kind: this.label_ })); + + this.hideThreshold_ += 1; + } + + items = _TextTrackButton.prototype.createItems.call(this, items, SubsCapsMenuItem); + return items; + }; + + return SubsCapsButton; + }(TextTrackButton); + + /** + * `kind`s of TextTrack to look for to associate it with this menu. + * + * @type {array} + * @private + */ + + + SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles']; + + /** + * The text that should display over the `SubsCapsButton`s controls. + * + * + * @type {string} + * @private + */ + SubsCapsButton.prototype.controlText_ = 'Subtitles'; + + Component.registerComponent('SubsCapsButton', SubsCapsButton); + + /** + * @file audio-track-menu-item.js + */ + + /** + * An {@link AudioTrack} {@link MenuItem} + * + * @extends MenuItem + */ + + var AudioTrackMenuItem = function (_MenuItem) { + inherits(AudioTrackMenuItem, _MenuItem); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function AudioTrackMenuItem(player, options) { + classCallCheck(this, AudioTrackMenuItem); + + var track = options.track; + var tracks = player.audioTracks(); + + // Modify options for parent MenuItem class's init. + options.label = track.label || track.language || 'Unknown'; + options.selected = track.enabled; + + var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options)); + + _this.track = track; + + _this.addClass('vjs-' + track.kind + '-menu-item'); + + var changeHandler = function changeHandler() { + for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + + _this.handleTracksChange.apply(_this, args); + }; + + tracks.addEventListener('change', changeHandler); + _this.on('dispose', function () { + tracks.removeEventListener('change', changeHandler); + }); + return _this; + } + + AudioTrackMenuItem.prototype.createEl = function createEl(type, props, attrs) { + var innerHTML = '<span class="vjs-menu-item-text">' + this.localize(this.options_.label); + + if (this.options_.track.kind === 'main-desc') { + innerHTML += '\n <span aria-hidden="true" class="vjs-icon-placeholder"></span>\n <span class="vjs-control-text"> ' + this.localize('Descriptions') + '</span>\n '; + } + + innerHTML += '</span>'; + + var el = _MenuItem.prototype.createEl.call(this, type, assign({ + innerHTML: innerHTML + }, props), attrs); + + return el; + }; + + /** + * This gets called when an `AudioTrackMenuItem is "clicked". See {@link ClickableComponent} + * for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + AudioTrackMenuItem.prototype.handleClick = function handleClick(event) { + var tracks = this.player_.audioTracks(); + + _MenuItem.prototype.handleClick.call(this, event); + + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + + track.enabled = track === this.track; + } + }; + + /** + * Handle any {@link AudioTrack} change. + * + * @param {EventTarget~Event} [event] + * The {@link AudioTrackList#change} event that caused this to run. + * + * @listens AudioTrackList#change + */ + + + AudioTrackMenuItem.prototype.handleTracksChange = function handleTracksChange(event) { + this.selected(this.track.enabled); + }; + + return AudioTrackMenuItem; + }(MenuItem); + + Component.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem); + + /** + * @file audio-track-button.js + */ + + /** + * The base class for buttons that toggle specific {@link AudioTrack} types. + * + * @extends TrackButton + */ + + var AudioTrackButton = function (_TrackButton) { + inherits(AudioTrackButton, _TrackButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options={}] + * The key/value store of player options. + */ + function AudioTrackButton(player) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + classCallCheck(this, AudioTrackButton); + + options.tracks = player.audioTracks(); + + return possibleConstructorReturn(this, _TrackButton.call(this, player, options)); + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + AudioTrackButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-audio-button ' + _TrackButton.prototype.buildCSSClass.call(this); + }; + + AudioTrackButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + return 'vjs-audio-button ' + _TrackButton.prototype.buildWrapperCSSClass.call(this); + }; + + /** + * Create a menu item for each audio track + * + * @param {AudioTrackMenuItem[]} [items=[]] + * An array of existing menu items to use. + * + * @return {AudioTrackMenuItem[]} + * An array of menu items + */ + + + AudioTrackButton.prototype.createItems = function createItems() { + var items = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : []; + + // if there's only one audio track, there no point in showing it + this.hideThreshold_ = 1; + + var tracks = this.player_.audioTracks(); + + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + + items.push(new AudioTrackMenuItem(this.player_, { + track: track, + // MenuItem is selectable + selectable: true, + // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time) + multiSelectable: false + })); + } + + return items; + }; + + return AudioTrackButton; + }(TrackButton); + + /** + * The text that should display over the `AudioTrackButton`s controls. Added for localization. + * + * @type {string} + * @private + */ + + + AudioTrackButton.prototype.controlText_ = 'Audio Track'; + Component.registerComponent('AudioTrackButton', AudioTrackButton); + + /** + * @file playback-rate-menu-item.js + */ + + /** + * The specific menu item type for selecting a playback rate. + * + * @extends MenuItem + */ + + var PlaybackRateMenuItem = function (_MenuItem) { + inherits(PlaybackRateMenuItem, _MenuItem); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function PlaybackRateMenuItem(player, options) { + classCallCheck(this, PlaybackRateMenuItem); + + var label = options.rate; + var rate = parseFloat(label, 10); + + // Modify options for parent MenuItem class's init. + options.label = label; + options.selected = rate === 1; + options.selectable = true; + options.multiSelectable = false; + + var _this = possibleConstructorReturn(this, _MenuItem.call(this, player, options)); + + _this.label = label; + _this.rate = rate; + + _this.on(player, 'ratechange', _this.update); + return _this; + } + + /** + * This gets called when an `PlaybackRateMenuItem` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + PlaybackRateMenuItem.prototype.handleClick = function handleClick(event) { + _MenuItem.prototype.handleClick.call(this); + this.player().playbackRate(this.rate); + }; + + /** + * Update the PlaybackRateMenuItem when the playbackrate changes. + * + * @param {EventTarget~Event} [event] + * The `ratechange` event that caused this function to run. + * + * @listens Player#ratechange + */ + + + PlaybackRateMenuItem.prototype.update = function update(event) { + this.selected(this.player().playbackRate() === this.rate); + }; + + return PlaybackRateMenuItem; + }(MenuItem); + + /** + * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization. + * + * @type {string} + * @private + */ + + + PlaybackRateMenuItem.prototype.contentElType = 'button'; + + Component.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem); + + /** + * @file playback-rate-menu-button.js + */ + + /** + * The component for controlling the playback rate. + * + * @extends MenuButton + */ + + var PlaybackRateMenuButton = function (_MenuButton) { + inherits(PlaybackRateMenuButton, _MenuButton); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function PlaybackRateMenuButton(player, options) { + classCallCheck(this, PlaybackRateMenuButton); + + var _this = possibleConstructorReturn(this, _MenuButton.call(this, player, options)); + + _this.updateVisibility(); + _this.updateLabel(); + + _this.on(player, 'loadstart', _this.updateVisibility); + _this.on(player, 'ratechange', _this.updateLabel); + return _this; + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + PlaybackRateMenuButton.prototype.createEl = function createEl$$1() { + var el = _MenuButton.prototype.createEl.call(this); + + this.labelEl_ = createEl('div', { + className: 'vjs-playback-rate-value', + innerHTML: '1x' + }); + + el.appendChild(this.labelEl_); + + return el; + }; + + PlaybackRateMenuButton.prototype.dispose = function dispose() { + this.labelEl_ = null; + + _MenuButton.prototype.dispose.call(this); + }; + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + + + PlaybackRateMenuButton.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-playback-rate ' + _MenuButton.prototype.buildCSSClass.call(this); + }; + + PlaybackRateMenuButton.prototype.buildWrapperCSSClass = function buildWrapperCSSClass() { + return 'vjs-playback-rate ' + _MenuButton.prototype.buildWrapperCSSClass.call(this); + }; + + /** + * Create the playback rate menu + * + * @return {Menu} + * Menu object populated with {@link PlaybackRateMenuItem}s + */ + + + PlaybackRateMenuButton.prototype.createMenu = function createMenu() { + var menu = new Menu(this.player()); + var rates = this.playbackRates(); + + if (rates) { + for (var i = rates.length - 1; i >= 0; i--) { + menu.addChild(new PlaybackRateMenuItem(this.player(), { rate: rates[i] + 'x' })); + } + } + + return menu; + }; + + /** + * Updates ARIA accessibility attributes + */ + + + PlaybackRateMenuButton.prototype.updateARIAAttributes = function updateARIAAttributes() { + // Current playback rate + this.el().setAttribute('aria-valuenow', this.player().playbackRate()); + }; + + /** + * This gets called when an `PlaybackRateMenuButton` is "clicked". See + * {@link ClickableComponent} for more detailed information on what a click can be. + * + * @param {EventTarget~Event} [event] + * The `keydown`, `tap`, or `click` event that caused this function to be + * called. + * + * @listens tap + * @listens click + */ + + + PlaybackRateMenuButton.prototype.handleClick = function handleClick(event) { + // select next rate option + var currentRate = this.player().playbackRate(); + var rates = this.playbackRates(); + + // this will select first one if the last one currently selected + var newRate = rates[0]; + + for (var i = 0; i < rates.length; i++) { + if (rates[i] > currentRate) { + newRate = rates[i]; + break; + } + } + this.player().playbackRate(newRate); + }; + + /** + * Get possible playback rates + * + * @return {Array} + * All possible playback rates + */ + + + PlaybackRateMenuButton.prototype.playbackRates = function playbackRates() { + return this.options_.playbackRates || this.options_.playerOptions && this.options_.playerOptions.playbackRates; + }; + + /** + * Get whether playback rates is supported by the tech + * and an array of playback rates exists + * + * @return {boolean} + * Whether changing playback rate is supported + */ + + + PlaybackRateMenuButton.prototype.playbackRateSupported = function playbackRateSupported() { + return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0; + }; + + /** + * Hide playback rate controls when they're no playback rate options to select + * + * @param {EventTarget~Event} [event] + * The event that caused this function to run. + * + * @listens Player#loadstart + */ + + + PlaybackRateMenuButton.prototype.updateVisibility = function updateVisibility(event) { + if (this.playbackRateSupported()) { + this.removeClass('vjs-hidden'); + } else { + this.addClass('vjs-hidden'); + } + }; + + /** + * Update button label when rate changed + * + * @param {EventTarget~Event} [event] + * The event that caused this function to run. + * + * @listens Player#ratechange + */ + + + PlaybackRateMenuButton.prototype.updateLabel = function updateLabel(event) { + if (this.playbackRateSupported()) { + this.labelEl_.innerHTML = this.player().playbackRate() + 'x'; + } + }; + + return PlaybackRateMenuButton; + }(MenuButton); + + /** + * The text that should display over the `FullscreenToggle`s controls. Added for localization. + * + * @type {string} + * @private + */ + + + PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate'; + + Component.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton); + + /** + * @file spacer.js + */ + + /** + * Just an empty spacer element that can be used as an append point for plugins, etc. + * Also can be used to create space between elements when necessary. + * + * @extends Component + */ + + var Spacer = function (_Component) { + inherits(Spacer, _Component); + + function Spacer() { + classCallCheck(this, Spacer); + return possibleConstructorReturn(this, _Component.apply(this, arguments)); + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + Spacer.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-spacer ' + _Component.prototype.buildCSSClass.call(this); + }; + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + Spacer.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'div', { + className: this.buildCSSClass() + }); + }; + + return Spacer; + }(Component); + + Component.registerComponent('Spacer', Spacer); + + /** + * @file custom-control-spacer.js + */ + + /** + * Spacer specifically meant to be used as an insertion point for new plugins, etc. + * + * @extends Spacer + */ + + var CustomControlSpacer = function (_Spacer) { + inherits(CustomControlSpacer, _Spacer); + + function CustomControlSpacer() { + classCallCheck(this, CustomControlSpacer); + return possibleConstructorReturn(this, _Spacer.apply(this, arguments)); + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + */ + CustomControlSpacer.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-custom-control-spacer ' + _Spacer.prototype.buildCSSClass.call(this); + }; + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + + + CustomControlSpacer.prototype.createEl = function createEl() { + var el = _Spacer.prototype.createEl.call(this, { + className: this.buildCSSClass() + }); + + // No-flex/table-cell mode requires there be some content + // in the cell to fill the remaining space of the table. + el.innerHTML = '\xA0'; + return el; + }; + + return CustomControlSpacer; + }(Spacer); + + Component.registerComponent('CustomControlSpacer', CustomControlSpacer); + + /** + * @file control-bar.js + */ + + /** + * Container of main controls. + * + * @extends Component + */ + + var ControlBar = function (_Component) { + inherits(ControlBar, _Component); + + function ControlBar() { + classCallCheck(this, ControlBar); + return possibleConstructorReturn(this, _Component.apply(this, arguments)); + } + + /** + * Create the `Component`'s DOM element + * + * @return {Element} + * The element that was created. + */ + ControlBar.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'div', { + className: 'vjs-control-bar', + dir: 'ltr' + }); + }; + + return ControlBar; + }(Component); + + /** + * Default options for `ControlBar` + * + * @type {Object} + * @private + */ + + + ControlBar.prototype.options_ = { + children: ['playToggle', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'fullscreenToggle'] + }; + + Component.registerComponent('ControlBar', ControlBar); + + /** + * @file error-display.js + */ + + /** + * A display that indicates an error has occurred. This means that the video + * is unplayable. + * + * @extends ModalDialog + */ + + var ErrorDisplay = function (_ModalDialog) { + inherits(ErrorDisplay, _ModalDialog); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function ErrorDisplay(player, options) { + classCallCheck(this, ErrorDisplay); + + var _this = possibleConstructorReturn(this, _ModalDialog.call(this, player, options)); + + _this.on(player, 'error', _this.open); + return _this; + } + + /** + * Builds the default DOM `className`. + * + * @return {string} + * The DOM `className` for this object. + * + * @deprecated Since version 5. + */ + + + ErrorDisplay.prototype.buildCSSClass = function buildCSSClass() { + return 'vjs-error-display ' + _ModalDialog.prototype.buildCSSClass.call(this); + }; + + /** + * Gets the localized error message based on the `Player`s error. + * + * @return {string} + * The `Player`s error message localized or an empty string. + */ + + + ErrorDisplay.prototype.content = function content() { + var error = this.player().error(); + + return error ? this.localize(error.message) : ''; + }; + + return ErrorDisplay; + }(ModalDialog); + + /** + * The default options for an `ErrorDisplay`. + * + * @private + */ + + + ErrorDisplay.prototype.options_ = mergeOptions(ModalDialog.prototype.options_, { + pauseOnOpen: false, + fillAlways: true, + temporary: false, + uncloseable: true + }); + + Component.registerComponent('ErrorDisplay', ErrorDisplay); + + /** + * @file text-track-settings.js + */ + + var LOCAL_STORAGE_KEY = 'vjs-text-track-settings'; + + var COLOR_BLACK = ['#000', 'Black']; + var COLOR_BLUE = ['#00F', 'Blue']; + var COLOR_CYAN = ['#0FF', 'Cyan']; + var COLOR_GREEN = ['#0F0', 'Green']; + var COLOR_MAGENTA = ['#F0F', 'Magenta']; + var COLOR_RED = ['#F00', 'Red']; + var COLOR_WHITE = ['#FFF', 'White']; + var COLOR_YELLOW = ['#FF0', 'Yellow']; + + var OPACITY_OPAQUE = ['1', 'Opaque']; + var OPACITY_SEMI = ['0.5', 'Semi-Transparent']; + var OPACITY_TRANS = ['0', 'Transparent']; + + // Configuration for the various <select> elements in the DOM of this component. + // + // Possible keys include: + // + // `default`: + // The default option index. Only needs to be provided if not zero. + // `parser`: + // A function which is used to parse the value from the selected option in + // a customized way. + // `selector`: + // The selector used to find the associated <select> element. + var selectConfigs = { + backgroundColor: { + selector: '.vjs-bg-color > select', + id: 'captions-background-color-%s', + label: 'Color', + options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN] + }, + + backgroundOpacity: { + selector: '.vjs-bg-opacity > select', + id: 'captions-background-opacity-%s', + label: 'Transparency', + options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS] + }, + + color: { + selector: '.vjs-fg-color > select', + id: 'captions-foreground-color-%s', + label: 'Color', + options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN] + }, + + edgeStyle: { + selector: '.vjs-edge-style > select', + id: '%s', + label: 'Text Edge Style', + options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Dropshadow']] + }, + + fontFamily: { + selector: '.vjs-font-family > select', + id: 'captions-font-family-%s', + label: 'Font Family', + options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']] + }, + + fontPercent: { + selector: '.vjs-font-percent > select', + id: 'captions-font-size-%s', + label: 'Font Size', + options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']], + default: 2, + parser: function parser(v) { + return v === '1.00' ? null : Number(v); + } + }, + + textOpacity: { + selector: '.vjs-text-opacity > select', + id: 'captions-foreground-opacity-%s', + label: 'Transparency', + options: [OPACITY_OPAQUE, OPACITY_SEMI] + }, + + // Options for this object are defined below. + windowColor: { + selector: '.vjs-window-color > select', + id: 'captions-window-color-%s', + label: 'Color' + }, + + // Options for this object are defined below. + windowOpacity: { + selector: '.vjs-window-opacity > select', + id: 'captions-window-opacity-%s', + label: 'Transparency', + options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE] + } + }; + + selectConfigs.windowColor.options = selectConfigs.backgroundColor.options; + + /** + * Get the actual value of an option. + * + * @param {string} value + * The value to get + * + * @param {Function} [parser] + * Optional function to adjust the value. + * + * @return {Mixed} + * - Will be `undefined` if no value exists + * - Will be `undefined` if the given value is "none". + * - Will be the actual value otherwise. + * + * @private + */ + function parseOptionValue(value, parser) { + if (parser) { + value = parser(value); + } + + if (value && value !== 'none') { + return value; + } + } + + /** + * Gets the value of the selected <option> element within a <select> element. + * + * @param {Element} el + * the element to look in + * + * @param {Function} [parser] + * Optional function to adjust the value. + * + * @return {Mixed} + * - Will be `undefined` if no value exists + * - Will be `undefined` if the given value is "none". + * - Will be the actual value otherwise. + * + * @private + */ + function getSelectedOptionValue(el, parser) { + var value = el.options[el.options.selectedIndex].value; + + return parseOptionValue(value, parser); + } + + /** + * Sets the selected <option> element within a <select> element based on a + * given value. + * + * @param {Element} el + * The element to look in. + * + * @param {string} value + * the property to look on. + * + * @param {Function} [parser] + * Optional function to adjust the value before comparing. + * + * @private + */ + function setSelectedOption(el, value, parser) { + if (!value) { + return; + } + + for (var i = 0; i < el.options.length; i++) { + if (parseOptionValue(el.options[i].value, parser) === value) { + el.selectedIndex = i; + break; + } + } + } + + /** + * Manipulate Text Tracks settings. + * + * @extends ModalDialog + */ + + var TextTrackSettings = function (_ModalDialog) { + inherits(TextTrackSettings, _ModalDialog); + + /** + * Creates an instance of this class. + * + * @param {Player} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of player options. + */ + function TextTrackSettings(player, options) { + classCallCheck(this, TextTrackSettings); + + options.temporary = false; + + var _this = possibleConstructorReturn(this, _ModalDialog.call(this, player, options)); + + _this.updateDisplay = bind(_this, _this.updateDisplay); + + // fill the modal and pretend we have opened it + _this.fill(); + _this.hasBeenOpened_ = _this.hasBeenFilled_ = true; + + _this.endDialog = createEl('p', { + className: 'vjs-control-text', + textContent: _this.localize('End of dialog window.') + }); + _this.el().appendChild(_this.endDialog); + + _this.setDefaults(); + + // Grab `persistTextTrackSettings` from the player options if not passed in child options + if (options.persistTextTrackSettings === undefined) { + _this.options_.persistTextTrackSettings = _this.options_.playerOptions.persistTextTrackSettings; + } + + _this.on(_this.$('.vjs-done-button'), 'click', function () { + _this.saveSettings(); + _this.close(); + }); + + _this.on(_this.$('.vjs-default-button'), 'click', function () { + _this.setDefaults(); + _this.updateDisplay(); + }); + + each(selectConfigs, function (config) { + _this.on(_this.$(config.selector), 'change', _this.updateDisplay); + }); + + if (_this.options_.persistTextTrackSettings) { + _this.restoreSettings(); + } + return _this; + } + + TextTrackSettings.prototype.dispose = function dispose() { + this.endDialog = null; + + _ModalDialog.prototype.dispose.call(this); + }; + + /** + * Create a <select> element with configured options. + * + * @param {string} key + * Configuration key to use during creation. + * + * @return {string} + * An HTML string. + * + * @private + */ + + + TextTrackSettings.prototype.createElSelect_ = function createElSelect_(key) { + var _this2 = this; + + var legendId = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ''; + var type = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 'label'; + + var config = selectConfigs[key]; + var id = config.id.replace('%s', this.id_); + var selectLabelledbyIds = [legendId, id].join(' ').trim(); + + return ['<' + type + ' id="' + id + '" class="' + (type === 'label' ? 'vjs-label' : '') + '">', this.localize(config.label), '</' + type + '>', '<select aria-labelledby="' + selectLabelledbyIds + '">'].concat(config.options.map(function (o) { + var optionId = id + '-' + o[1].replace(/\W+/g, ''); + + return ['<option id="' + optionId + '" value="' + o[0] + '" ', 'aria-labelledby="' + selectLabelledbyIds + ' ' + optionId + '">', _this2.localize(o[1]), '</option>'].join(''); + })).concat('</select>').join(''); + }; + + /** + * Create foreground color element for the component + * + * @return {string} + * An HTML string. + * + * @private + */ + + + TextTrackSettings.prototype.createElFgColor_ = function createElFgColor_() { + var legendId = 'captions-text-legend-' + this.id_; + + return ['<fieldset class="vjs-fg-color vjs-track-setting">', '<legend id="' + legendId + '">', this.localize('Text'), '</legend>', this.createElSelect_('color', legendId), '<span class="vjs-text-opacity vjs-opacity">', this.createElSelect_('textOpacity', legendId), '</span>', '</fieldset>'].join(''); + }; + + /** + * Create background color element for the component + * + * @return {string} + * An HTML string. + * + * @private + */ + + + TextTrackSettings.prototype.createElBgColor_ = function createElBgColor_() { + var legendId = 'captions-background-' + this.id_; + + return ['<fieldset class="vjs-bg-color vjs-track-setting">', '<legend id="' + legendId + '">', this.localize('Background'), '</legend>', this.createElSelect_('backgroundColor', legendId), '<span class="vjs-bg-opacity vjs-opacity">', this.createElSelect_('backgroundOpacity', legendId), '</span>', '</fieldset>'].join(''); + }; + + /** + * Create window color element for the component + * + * @return {string} + * An HTML string. + * + * @private + */ + + + TextTrackSettings.prototype.createElWinColor_ = function createElWinColor_() { + var legendId = 'captions-window-' + this.id_; + + return ['<fieldset class="vjs-window-color vjs-track-setting">', '<legend id="' + legendId + '">', this.localize('Window'), '</legend>', this.createElSelect_('windowColor', legendId), '<span class="vjs-window-opacity vjs-opacity">', this.createElSelect_('windowOpacity', legendId), '</span>', '</fieldset>'].join(''); + }; + + /** + * Create color elements for the component + * + * @return {Element} + * The element that was created + * + * @private + */ + + + TextTrackSettings.prototype.createElColors_ = function createElColors_() { + return createEl('div', { + className: 'vjs-track-settings-colors', + innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('') + }); + }; + + /** + * Create font elements for the component + * + * @return {Element} + * The element that was created. + * + * @private + */ + + + TextTrackSettings.prototype.createElFont_ = function createElFont_() { + return createEl('div', { + className: 'vjs-track-settings-font', + innerHTML: ['<fieldset class="vjs-font-percent vjs-track-setting">', this.createElSelect_('fontPercent', '', 'legend'), '</fieldset>', '<fieldset class="vjs-edge-style vjs-track-setting">', this.createElSelect_('edgeStyle', '', 'legend'), '</fieldset>', '<fieldset class="vjs-font-family vjs-track-setting">', this.createElSelect_('fontFamily', '', 'legend'), '</fieldset>'].join('') + }); + }; + + /** + * Create controls for the component + * + * @return {Element} + * The element that was created. + * + * @private + */ + + + TextTrackSettings.prototype.createElControls_ = function createElControls_() { + var defaultsDescription = this.localize('restore all settings to the default values'); + + return createEl('div', { + className: 'vjs-track-settings-controls', + innerHTML: ['<button class="vjs-default-button" title="' + defaultsDescription + '">', this.localize('Reset'), '<span class="vjs-control-text"> ' + defaultsDescription + '</span>', '</button>', '<button class="vjs-done-button">' + this.localize('Done') + '</button>'].join('') + }); + }; + + TextTrackSettings.prototype.content = function content() { + return [this.createElColors_(), this.createElFont_(), this.createElControls_()]; + }; + + TextTrackSettings.prototype.label = function label() { + return this.localize('Caption Settings Dialog'); + }; + + TextTrackSettings.prototype.description = function description() { + return this.localize('Beginning of dialog window. Escape will cancel and close the window.'); + }; + + TextTrackSettings.prototype.buildCSSClass = function buildCSSClass() { + return _ModalDialog.prototype.buildCSSClass.call(this) + ' vjs-text-track-settings'; + }; + + /** + * Gets an object of text track settings (or null). + * + * @return {Object} + * An object with config values parsed from the DOM or localStorage. + */ + + + TextTrackSettings.prototype.getValues = function getValues() { + var _this3 = this; + + return reduce(selectConfigs, function (accum, config, key) { + var value = getSelectedOptionValue(_this3.$(config.selector), config.parser); + + if (value !== undefined) { + accum[key] = value; + } + + return accum; + }, {}); + }; + + /** + * Sets text track settings from an object of values. + * + * @param {Object} values + * An object with config values parsed from the DOM or localStorage. + */ + + + TextTrackSettings.prototype.setValues = function setValues(values) { + var _this4 = this; + + each(selectConfigs, function (config, key) { + setSelectedOption(_this4.$(config.selector), values[key], config.parser); + }); + }; + + /** + * Sets all `<select>` elements to their default values. + */ + + + TextTrackSettings.prototype.setDefaults = function setDefaults() { + var _this5 = this; + + each(selectConfigs, function (config) { + var index = config.hasOwnProperty('default') ? config.default : 0; + + _this5.$(config.selector).selectedIndex = index; + }); + }; + + /** + * Restore texttrack settings from localStorage + */ + + + TextTrackSettings.prototype.restoreSettings = function restoreSettings() { + var values = void 0; + + try { + values = JSON.parse(window_1.localStorage.getItem(LOCAL_STORAGE_KEY)); + } catch (err) { + log$1.warn(err); + } + + if (values) { + this.setValues(values); + } + }; + + /** + * Save text track settings to localStorage + */ + + + TextTrackSettings.prototype.saveSettings = function saveSettings() { + if (!this.options_.persistTextTrackSettings) { + return; + } + + var values = this.getValues(); + + try { + if (Object.keys(values).length) { + window_1.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(values)); + } else { + window_1.localStorage.removeItem(LOCAL_STORAGE_KEY); + } + } catch (err) { + log$1.warn(err); + } + }; + + /** + * Update display of text track settings + */ + + + TextTrackSettings.prototype.updateDisplay = function updateDisplay() { + var ttDisplay = this.player_.getChild('textTrackDisplay'); + + if (ttDisplay) { + ttDisplay.updateDisplay(); + } + }; + + /** + * conditionally blur the element and refocus the captions button + * + * @private + */ + + + TextTrackSettings.prototype.conditionalBlur_ = function conditionalBlur_() { + this.previouslyActiveEl_ = null; + this.off(document_1, 'keydown', this.handleKeyDown); + + var cb = this.player_.controlBar; + var subsCapsBtn = cb && cb.subsCapsButton; + var ccBtn = cb && cb.captionsButton; + + if (subsCapsBtn) { + subsCapsBtn.focus(); + } else if (ccBtn) { + ccBtn.focus(); + } + }; + + return TextTrackSettings; + }(ModalDialog); + + Component.registerComponent('TextTrackSettings', TextTrackSettings); + + /** + * @file resize-manager.js + */ + + /** + * A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions. + * + * It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}. + * + * If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option. + * If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below. + * @example <caption>How to disable the resize manager</caption> + * const player = videojs('#vid', { + * resizeManager: false + * }); + * + * @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification} + * + * @extends Component + */ + + var ResizeManager = function (_Component) { + inherits(ResizeManager, _Component); + + /** + * Create the ResizeManager. + * + * @param {Object} player + * The `Player` that this class should be attached to. + * + * @param {Object} [options] + * The key/value store of ResizeManager options. + * + * @param {Object} [options.ResizeObserver] + * A polyfill for ResizeObserver can be passed in here. + * If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback. + */ + function ResizeManager(player, options) { + classCallCheck(this, ResizeManager); + + var RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window_1.ResizeObserver; + + // if `null` was passed, we want to disable the ResizeObserver + if (options.ResizeObserver === null) { + RESIZE_OBSERVER_AVAILABLE = false; + } + + // Only create an element when ResizeObserver isn't available + var options_ = mergeOptions({ + createEl: !RESIZE_OBSERVER_AVAILABLE, + reportTouchActivity: false + }, options); + + var _this = possibleConstructorReturn(this, _Component.call(this, player, options_)); + + _this.ResizeObserver = options.ResizeObserver || window_1.ResizeObserver; + _this.loadListener_ = null; + _this.resizeObserver_ = null; + _this.debouncedHandler_ = debounce(function () { + _this.resizeHandler(); + }, 100, false, _this); + + if (RESIZE_OBSERVER_AVAILABLE) { + _this.resizeObserver_ = new _this.ResizeObserver(_this.debouncedHandler_); + _this.resizeObserver_.observe(player.el()); + } else { + _this.loadListener_ = function () { + if (!_this.el_ || !_this.el_.contentWindow) { + return; + } + + on(_this.el_.contentWindow, 'resize', _this.debouncedHandler_); + }; + + _this.one('load', _this.loadListener_); + } + return _this; + } + + ResizeManager.prototype.createEl = function createEl() { + return _Component.prototype.createEl.call(this, 'iframe', { + className: 'vjs-resize-manager' + }); + }; + + /** + * Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver + * + * @fires Player#playerresize + */ + + + ResizeManager.prototype.resizeHandler = function resizeHandler() { + /** + * Called when the player size has changed + * + * @event Player#playerresize + * @type {EventTarget~Event} + */ + // make sure player is still around to trigger + // prevents this from causing an error after dispose + if (!this.player_ || !this.player_.trigger) { + return; + } + + this.player_.trigger('playerresize'); + }; + + ResizeManager.prototype.dispose = function dispose() { + if (this.debouncedHandler_) { + this.debouncedHandler_.cancel(); + } + + if (this.resizeObserver_) { + if (this.player_.el()) { + this.resizeObserver_.unobserve(this.player_.el()); + } + this.resizeObserver_.disconnect(); + } + + if (this.el_ && this.el_.contentWindow) { + off(this.el_.contentWindow, 'resize', this.debouncedHandler_); + } + + if (this.loadListener_) { + this.off('load', this.loadListener_); + } + + this.ResizeObserver = null; + this.resizeObserver = null; + this.debouncedHandler_ = null; + this.loadListener_ = null; + }; + + return ResizeManager; + }(Component); + + Component.registerComponent('ResizeManager', ResizeManager); + + /** + * This function is used to fire a sourceset when there is something + * similar to `mediaEl.load()` being called. It will try to find the source via + * the `src` attribute and then the `<source>` elements. It will then fire `sourceset` + * with the source that was found or empty string if we cannot know. If it cannot + * find a source then `sourceset` will not be fired. + * + * @param {Html5} tech + * The tech object that sourceset was setup on + * + * @return {boolean} + * returns false if the sourceset was not fired and true otherwise. + */ + var sourcesetLoad = function sourcesetLoad(tech) { + var el = tech.el(); + + // if `el.src` is set, that source will be loaded. + if (el.hasAttribute('src')) { + tech.triggerSourceset(el.src); + return true; + } + + /** + * Since there isn't a src property on the media element, source elements will be used for + * implementing the source selection algorithm. This happens asynchronously and + * for most cases were there is more than one source we cannot tell what source will + * be loaded, without re-implementing the source selection algorithm. At this time we are not + * going to do that. There are three special cases that we do handle here though: + * + * 1. If there are no sources, do not fire `sourceset`. + * 2. If there is only one `<source>` with a `src` property/attribute that is our `src` + * 3. If there is more than one `<source>` but all of them have the same `src` url. + * That will be our src. + */ + var sources = tech.$$('source'); + var srcUrls = []; + var src = ''; + + // if there are no sources, do not fire sourceset + if (!sources.length) { + return false; + } + + // only count valid/non-duplicate source elements + for (var i = 0; i < sources.length; i++) { + var url = sources[i].src; + + if (url && srcUrls.indexOf(url) === -1) { + srcUrls.push(url); + } + } + + // there were no valid sources + if (!srcUrls.length) { + return false; + } + + // there is only one valid source element url + // use that + if (srcUrls.length === 1) { + src = srcUrls[0]; + } + + tech.triggerSourceset(src); + return true; + }; + + /** + * our implementation of an `innerHTML` descriptor for browsers + * that do not have one. + */ + var innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', { + get: function get() { + return this.cloneNode(true).innerHTML; + }, + set: function set(v) { + // make a dummy node to use innerHTML on + var dummy = document_1.createElement(this.nodeName.toLowerCase()); + + // set innerHTML to the value provided + dummy.innerHTML = v; + + // make a document fragment to hold the nodes from dummy + var docFrag = document_1.createDocumentFragment(); + + // copy all of the nodes created by the innerHTML on dummy + // to the document fragment + while (dummy.childNodes.length) { + docFrag.appendChild(dummy.childNodes[0]); + } + + // remove content + this.innerText = ''; + + // now we add all of that html in one by appending the + // document fragment. This is how innerHTML does it. + window_1.Element.prototype.appendChild.call(this, docFrag); + + // then return the result that innerHTML's setter would + return this.innerHTML; + } + }); + + /** + * Get a property descriptor given a list of priorities and the + * property to get. + */ + var getDescriptor = function getDescriptor(priority, prop) { + var descriptor = {}; + + for (var i = 0; i < priority.length; i++) { + descriptor = Object.getOwnPropertyDescriptor(priority[i], prop); + + if (descriptor && descriptor.set && descriptor.get) { + break; + } + } + + descriptor.enumerable = true; + descriptor.configurable = true; + + return descriptor; + }; + + var getInnerHTMLDescriptor = function getInnerHTMLDescriptor(tech) { + return getDescriptor([tech.el(), window_1.HTMLMediaElement.prototype, window_1.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML'); + }; + + /** + * Patches browser internal functions so that we can tell synchronously + * if a `<source>` was appended to the media element. For some reason this + * causes a `sourceset` if the the media element is ready and has no source. + * This happens when: + * - The page has just loaded and the media element does not have a source. + * - The media element was emptied of all sources, then `load()` was called. + * + * It does this by patching the following functions/properties when they are supported: + * + * - `append()` - can be used to add a `<source>` element to the media element + * - `appendChild()` - can be used to add a `<source>` element to the media element + * - `insertAdjacentHTML()` - can be used to add a `<source>` element to the media element + * - `innerHTML` - can be used to add a `<source>` element to the media element + * + * @param {Html5} tech + * The tech object that sourceset is being setup on. + */ + var firstSourceWatch = function firstSourceWatch(tech) { + var el = tech.el(); + + // make sure firstSourceWatch isn't setup twice. + if (el.resetSourceWatch_) { + return; + } + + var old = {}; + var innerDescriptor = getInnerHTMLDescriptor(tech); + var appendWrapper = function appendWrapper(appendFn) { + return function () { + for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + + var retval = appendFn.apply(el, args); + + sourcesetLoad(tech); + + return retval; + }; + }; + + ['append', 'appendChild', 'insertAdjacentHTML'].forEach(function (k) { + if (!el[k]) { + return; + } + + // store the old function + old[k] = el[k]; + + // call the old function with a sourceset if a source + // was loaded + el[k] = appendWrapper(old[k]); + }); + + Object.defineProperty(el, 'innerHTML', mergeOptions(innerDescriptor, { + set: appendWrapper(innerDescriptor.set) + })); + + el.resetSourceWatch_ = function () { + el.resetSourceWatch_ = null; + Object.keys(old).forEach(function (k) { + el[k] = old[k]; + }); + + Object.defineProperty(el, 'innerHTML', innerDescriptor); + }; + + // on the first sourceset, we need to revert our changes + tech.one('sourceset', el.resetSourceWatch_); + }; + + /** + * our implementation of a `src` descriptor for browsers + * that do not have one. + */ + var srcDescriptorPolyfill = Object.defineProperty({}, 'src', { + get: function get() { + if (this.hasAttribute('src')) { + return getAbsoluteURL(window_1.Element.prototype.getAttribute.call(this, 'src')); + } + + return ''; + }, + set: function set(v) { + window_1.Element.prototype.setAttribute.call(this, 'src', v); + + return v; + } + }); + + var getSrcDescriptor = function getSrcDescriptor(tech) { + return getDescriptor([tech.el(), window_1.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src'); + }; + + /** + * setup `sourceset` handling on the `Html5` tech. This function + * patches the following element properties/functions: + * + * - `src` - to determine when `src` is set + * - `setAttribute()` - to determine when `src` is set + * - `load()` - this re-triggers the source selection algorithm, and can + * cause a sourceset. + * + * If there is no source when we are adding `sourceset` support or during a `load()` + * we also patch the functions listed in `firstSourceWatch`. + * + * @param {Html5} tech + * The tech to patch + */ + var setupSourceset = function setupSourceset(tech) { + if (!tech.featuresSourceset) { + return; + } + + var el = tech.el(); + + // make sure sourceset isn't setup twice. + if (el.resetSourceset_) { + return; + } + + var srcDescriptor = getSrcDescriptor(tech); + var oldSetAttribute = el.setAttribute; + var oldLoad = el.load; + + Object.defineProperty(el, 'src', mergeOptions(srcDescriptor, { + set: function set(v) { + var retval = srcDescriptor.set.call(el, v); + + // we use the getter here to get the actual value set on src + tech.triggerSourceset(el.src); + + return retval; + } + })); + + el.setAttribute = function (n, v) { + var retval = oldSetAttribute.call(el, n, v); + + if (/src/i.test(n)) { + tech.triggerSourceset(el.src); + } + + return retval; + }; + + el.load = function () { + var retval = oldLoad.call(el); + + // if load was called, but there was no source to fire + // sourceset on. We have to watch for a source append + // as that can trigger a `sourceset` when the media element + // has no source + if (!sourcesetLoad(tech)) { + tech.triggerSourceset(''); + firstSourceWatch(tech); + } + + return retval; + }; + + if (el.currentSrc) { + tech.triggerSourceset(el.currentSrc); + } else if (!sourcesetLoad(tech)) { + firstSourceWatch(tech); + } + + el.resetSourceset_ = function () { + el.resetSourceset_ = null; + el.load = oldLoad; + el.setAttribute = oldSetAttribute; + Object.defineProperty(el, 'src', srcDescriptor); + if (el.resetSourceWatch_) { + el.resetSourceWatch_(); + } + }; + }; + + var _templateObject$1 = taggedTemplateLiteralLoose(['Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n This may prevent text tracks from loading.'], ['Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n This may prevent text tracks from loading.']); + + /** + * HTML5 Media Controller - Wrapper for HTML5 Media API + * + * @mixes Tech~SourceHandlerAdditions + * @extends Tech + */ + + var Html5 = function (_Tech) { + inherits(Html5, _Tech); + + /** + * Create an instance of this Tech. + * + * @param {Object} [options] + * The key/value store of player options. + * + * @param {Component~ReadyCallback} ready + * Callback function to call when the `HTML5` Tech is ready. + */ + function Html5(options, ready) { + classCallCheck(this, Html5); + + var _this = possibleConstructorReturn(this, _Tech.call(this, options, ready)); + + var source = options.source; + var crossoriginTracks = false; + + // Set the source if one is provided + // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted) + // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source + // anyway so the error gets fired. + if (source && (_this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) { + _this.setSource(source); + } else { + _this.handleLateInit_(_this.el_); + } + + // setup sourceset after late sourceset/init + if (options.enableSourceset) { + _this.setupSourcesetHandling_(); + } + + if (_this.el_.hasChildNodes()) { + + var nodes = _this.el_.childNodes; + var nodesLength = nodes.length; + var removeNodes = []; + + while (nodesLength--) { + var node = nodes[nodesLength]; + var nodeName = node.nodeName.toLowerCase(); + + if (nodeName === 'track') { + if (!_this.featuresNativeTextTracks) { + // Empty video tag tracks so the built-in player doesn't use them also. + // This may not be fast enough to stop HTML5 browsers from reading the tags + // so we'll need to turn off any default tracks if we're manually doing + // captions and subtitles. videoElement.textTracks + removeNodes.push(node); + } else { + // store HTMLTrackElement and TextTrack to remote list + _this.remoteTextTrackEls().addTrackElement_(node); + _this.remoteTextTracks().addTrack(node.track); + _this.textTracks().addTrack(node.track); + if (!crossoriginTracks && !_this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) { + crossoriginTracks = true; + } + } + } + } + + for (var i = 0; i < removeNodes.length; i++) { + _this.el_.removeChild(removeNodes[i]); + } + } + + _this.proxyNativeTracks_(); + if (_this.featuresNativeTextTracks && crossoriginTracks) { + log$1.warn(tsml(_templateObject$1)); + } + + // prevent iOS Safari from disabling metadata text tracks during native playback + _this.restoreMetadataTracksInIOSNativePlayer_(); + + // Determine if native controls should be used + // Our goal should be to get the custom controls on mobile solid everywhere + // so we can remove this all together. Right now this will block custom + // controls on touch enabled laptops like the Chrome Pixel + if ((TOUCH_ENABLED || IS_IPHONE || IS_NATIVE_ANDROID) && options.nativeControlsForTouch === true) { + _this.setControls(true); + } + + // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen` + // into a `fullscreenchange` event + _this.proxyWebkitFullscreen_(); + + _this.triggerReady(); + return _this; + } + + /** + * Dispose of `HTML5` media element and remove all tracks. + */ + + + Html5.prototype.dispose = function dispose() { + if (this.el_ && this.el_.resetSourceset_) { + this.el_.resetSourceset_(); + } + Html5.disposeMediaElement(this.el_); + this.options_ = null; + + // tech will handle clearing of the emulated track list + _Tech.prototype.dispose.call(this); + }; + + /** + * Modify the media element so that we can detect when + * the source is changed. Fires `sourceset` just after the source has changed + */ + + + Html5.prototype.setupSourcesetHandling_ = function setupSourcesetHandling_() { + setupSourceset(this); + }; + + /** + * When a captions track is enabled in the iOS Safari native player, all other + * tracks are disabled (including metadata tracks), which nulls all of their + * associated cue points. This will restore metadata tracks to their pre-fullscreen + * state in those cases so that cue points are not needlessly lost. + * + * @private + */ + + + Html5.prototype.restoreMetadataTracksInIOSNativePlayer_ = function restoreMetadataTracksInIOSNativePlayer_() { + var textTracks = this.textTracks(); + var metadataTracksPreFullscreenState = void 0; + + // captures a snapshot of every metadata track's current state + var takeMetadataTrackSnapshot = function takeMetadataTrackSnapshot() { + metadataTracksPreFullscreenState = []; + + for (var i = 0; i < textTracks.length; i++) { + var track = textTracks[i]; + + if (track.kind === 'metadata') { + metadataTracksPreFullscreenState.push({ + track: track, + storedMode: track.mode + }); + } + } + }; + + // snapshot each metadata track's initial state, and update the snapshot + // each time there is a track 'change' event + takeMetadataTrackSnapshot(); + textTracks.addEventListener('change', takeMetadataTrackSnapshot); + + this.on('dispose', function () { + return textTracks.removeEventListener('change', takeMetadataTrackSnapshot); + }); + + var restoreTrackMode = function restoreTrackMode() { + for (var i = 0; i < metadataTracksPreFullscreenState.length; i++) { + var storedTrack = metadataTracksPreFullscreenState[i]; + + if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) { + storedTrack.track.mode = storedTrack.storedMode; + } + } + // we only want this handler to be executed on the first 'change' event + textTracks.removeEventListener('change', restoreTrackMode); + }; + + // when we enter fullscreen playback, stop updating the snapshot and + // restore all track modes to their pre-fullscreen state + this.on('webkitbeginfullscreen', function () { + textTracks.removeEventListener('change', takeMetadataTrackSnapshot); + + // remove the listener before adding it just in case it wasn't previously removed + textTracks.removeEventListener('change', restoreTrackMode); + textTracks.addEventListener('change', restoreTrackMode); + }); + + // start updating the snapshot again after leaving fullscreen + this.on('webkitendfullscreen', function () { + // remove the listener before adding it just in case it wasn't previously removed + textTracks.removeEventListener('change', takeMetadataTrackSnapshot); + textTracks.addEventListener('change', takeMetadataTrackSnapshot); + + // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback + textTracks.removeEventListener('change', restoreTrackMode); + }); + }; + + /** + * Attempt to force override of tracks for the given type + * + * @param {String} type - Track type to override, possible values include 'Audio', + * 'Video', and 'Text'. + * @param {Boolean} override - If set to true native audio/video will be overridden, + * otherwise native audio/video will potentially be used. + * @private + */ + + + Html5.prototype.overrideNative_ = function overrideNative_(type, override) { + var _this2 = this; + + // If there is no behavioral change don't add/remove listeners + if (override !== this['featuresNative' + type + 'Tracks']) { + return; + } + + var lowerCaseType = type.toLowerCase(); + + if (this[lowerCaseType + 'TracksListeners_']) { + Object.keys(this[lowerCaseType + 'TracksListeners_']).forEach(function (eventName) { + var elTracks = _this2.el()[lowerCaseType + 'Tracks']; + + elTracks.removeEventListener(eventName, _this2[lowerCaseType + 'TracksListeners_'][eventName]); + }); + } + + this['featuresNative' + type + 'Tracks'] = !override; + this[lowerCaseType + 'TracksListeners_'] = null; + + this.proxyNativeTracksForType_(lowerCaseType); + }; + + /** + * Attempt to force override of native audio tracks. + * + * @param {Boolean} override - If set to true native audio will be overridden, + * otherwise native audio will potentially be used. + */ + + + Html5.prototype.overrideNativeAudioTracks = function overrideNativeAudioTracks(override) { + this.overrideNative_('Audio', override); + }; + + /** + * Attempt to force override of native video tracks. + * + * @param {Boolean} override - If set to true native video will be overridden, + * otherwise native video will potentially be used. + */ + + + Html5.prototype.overrideNativeVideoTracks = function overrideNativeVideoTracks(override) { + this.overrideNative_('Video', override); + }; + + /** + * Proxy native track list events for the given type to our track + * lists if the browser we are playing in supports that type of track list. + * + * @param {string} name - Track type; values include 'audio', 'video', and 'text' + * @private + */ + + + Html5.prototype.proxyNativeTracksForType_ = function proxyNativeTracksForType_(name) { + var _this3 = this; + + var props = NORMAL[name]; + var elTracks = this.el()[props.getterName]; + var techTracks = this[props.getterName](); + + if (!this['featuresNative' + props.capitalName + 'Tracks'] || !elTracks || !elTracks.addEventListener) { + return; + } + var listeners = { + change: function change(e) { + techTracks.trigger({ + type: 'change', + target: techTracks, + currentTarget: techTracks, + srcElement: techTracks + }); + }, + addtrack: function addtrack(e) { + techTracks.addTrack(e.track); + }, + removetrack: function removetrack(e) { + techTracks.removeTrack(e.track); + } + }; + var removeOldTracks = function removeOldTracks() { + var removeTracks = []; + + for (var i = 0; i < techTracks.length; i++) { + var found = false; + + for (var j = 0; j < elTracks.length; j++) { + if (elTracks[j] === techTracks[i]) { + found = true; + break; + } + } + + if (!found) { + removeTracks.push(techTracks[i]); + } + } + + while (removeTracks.length) { + techTracks.removeTrack(removeTracks.shift()); + } + }; + + this[props.getterName + 'Listeners_'] = listeners; + + Object.keys(listeners).forEach(function (eventName) { + var listener = listeners[eventName]; + + elTracks.addEventListener(eventName, listener); + _this3.on('dispose', function (e) { + return elTracks.removeEventListener(eventName, listener); + }); + }); + + // Remove (native) tracks that are not used anymore + this.on('loadstart', removeOldTracks); + this.on('dispose', function (e) { + return _this3.off('loadstart', removeOldTracks); + }); + }; + + /** + * Proxy all native track list events to our track lists if the browser we are playing + * in supports that type of track list. + * + * @private + */ + + + Html5.prototype.proxyNativeTracks_ = function proxyNativeTracks_() { + var _this4 = this; + + NORMAL.names.forEach(function (name) { + _this4.proxyNativeTracksForType_(name); + }); + }; + + /** + * Create the `Html5` Tech's DOM element. + * + * @return {Element} + * The element that gets created. + */ + + + Html5.prototype.createEl = function createEl$$1() { + var el = this.options_.tag; + + // Check if this browser supports moving the element into the box. + // On the iPhone video will break if you move the element, + // So we have to create a brand new element. + // If we ingested the player div, we do not need to move the media element. + if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) { + + // If the original tag is still there, clone and remove it. + if (el) { + var clone = el.cloneNode(true); + + if (el.parentNode) { + el.parentNode.insertBefore(clone, el); + } + Html5.disposeMediaElement(el); + el = clone; + } else { + el = document_1.createElement('video'); + + // determine if native controls should be used + var tagAttributes = this.options_.tag && getAttributes(this.options_.tag); + var attributes = mergeOptions({}, tagAttributes); + + if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) { + delete attributes.controls; + } + + setAttributes(el, assign(attributes, { + id: this.options_.techId, + class: 'vjs-tech' + })); + } + + el.playerId = this.options_.playerId; + } + + if (typeof this.options_.preload !== 'undefined') { + setAttribute(el, 'preload', this.options_.preload); + } + + // Update specific tag settings, in case they were overridden + // `autoplay` has to be *last* so that `muted` and `playsinline` are present + // when iOS/Safari or other browsers attempt to autoplay. + var settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay']; + + for (var i = 0; i < settingsAttrs.length; i++) { + var attr = settingsAttrs[i]; + var value = this.options_[attr]; + + if (typeof value !== 'undefined') { + if (value) { + setAttribute(el, attr, attr); + } else { + removeAttribute(el, attr); + } + el[attr] = value; + } + } + + return el; + }; + + /** + * This will be triggered if the loadstart event has already fired, before videojs was + * ready. Two known examples of when this can happen are: + * 1. If we're loading the playback object after it has started loading + * 2. The media is already playing the (often with autoplay on) then + * + * This function will fire another loadstart so that videojs can catchup. + * + * @fires Tech#loadstart + * + * @return {undefined} + * returns nothing. + */ + + + Html5.prototype.handleLateInit_ = function handleLateInit_(el) { + if (el.networkState === 0 || el.networkState === 3) { + // The video element hasn't started loading the source yet + // or didn't find a source + return; + } + + if (el.readyState === 0) { + // NetworkState is set synchronously BUT loadstart is fired at the + // end of the current stack, usually before setInterval(fn, 0). + // So at this point we know loadstart may have already fired or is + // about to fire, and either way the player hasn't seen it yet. + // We don't want to fire loadstart prematurely here and cause a + // double loadstart so we'll wait and see if it happens between now + // and the next loop, and fire it if not. + // HOWEVER, we also want to make sure it fires before loadedmetadata + // which could also happen between now and the next loop, so we'll + // watch for that also. + var loadstartFired = false; + var setLoadstartFired = function setLoadstartFired() { + loadstartFired = true; + }; + + this.on('loadstart', setLoadstartFired); + + var triggerLoadstart = function triggerLoadstart() { + // We did miss the original loadstart. Make sure the player + // sees loadstart before loadedmetadata + if (!loadstartFired) { + this.trigger('loadstart'); + } + }; + + this.on('loadedmetadata', triggerLoadstart); + + this.ready(function () { + this.off('loadstart', setLoadstartFired); + this.off('loadedmetadata', triggerLoadstart); + + if (!loadstartFired) { + // We did miss the original native loadstart. Fire it now. + this.trigger('loadstart'); + } + }); + + return; + } + + // From here on we know that loadstart already fired and we missed it. + // The other readyState events aren't as much of a problem if we double + // them, so not going to go to as much trouble as loadstart to prevent + // that unless we find reason to. + var eventsToTrigger = ['loadstart']; + + // loadedmetadata: newly equal to HAVE_METADATA (1) or greater + eventsToTrigger.push('loadedmetadata'); + + // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater + if (el.readyState >= 2) { + eventsToTrigger.push('loadeddata'); + } + + // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater + if (el.readyState >= 3) { + eventsToTrigger.push('canplay'); + } + + // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4) + if (el.readyState >= 4) { + eventsToTrigger.push('canplaythrough'); + } + + // We still need to give the player time to add event listeners + this.ready(function () { + eventsToTrigger.forEach(function (type) { + this.trigger(type); + }, this); + }); + }; + + /** + * Set current time for the `HTML5` tech. + * + * @param {number} seconds + * Set the current time of the media to this. + */ + + + Html5.prototype.setCurrentTime = function setCurrentTime(seconds) { + try { + this.el_.currentTime = seconds; + } catch (e) { + log$1(e, 'Video is not ready. (Video.js)'); + // this.warning(VideoJS.warnings.videoNotReady); + } + }; + + /** + * Get the current duration of the HTML5 media element. + * + * @return {number} + * The duration of the media or 0 if there is no duration. + */ + + + Html5.prototype.duration = function duration() { + var _this5 = this; + + // Android Chrome will report duration as Infinity for VOD HLS until after + // playback has started, which triggers the live display erroneously. + // Return NaN if playback has not started and trigger a durationupdate once + // the duration can be reliably known. + if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) { + // Wait for the first `timeupdate` with currentTime > 0 - there may be + // several with 0 + var checkProgress = function checkProgress() { + if (_this5.el_.currentTime > 0) { + // Trigger durationchange for genuinely live video + if (_this5.el_.duration === Infinity) { + _this5.trigger('durationchange'); + } + _this5.off('timeupdate', checkProgress); + } + }; + + this.on('timeupdate', checkProgress); + return NaN; + } + return this.el_.duration || NaN; + }; + + /** + * Get the current width of the HTML5 media element. + * + * @return {number} + * The width of the HTML5 media element. + */ + + + Html5.prototype.width = function width() { + return this.el_.offsetWidth; + }; + + /** + * Get the current height of the HTML5 media element. + * + * @return {number} + * The height of the HTML5 media element. + */ + + + Html5.prototype.height = function height() { + return this.el_.offsetHeight; + }; + + /** + * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into + * `fullscreenchange` event. + * + * @private + * @fires fullscreenchange + * @listens webkitendfullscreen + * @listens webkitbeginfullscreen + * @listens webkitbeginfullscreen + */ + + + Html5.prototype.proxyWebkitFullscreen_ = function proxyWebkitFullscreen_() { + var _this6 = this; + + if (!('webkitDisplayingFullscreen' in this.el_)) { + return; + } + + var endFn = function endFn() { + this.trigger('fullscreenchange', { isFullscreen: false }); + }; + + var beginFn = function beginFn() { + if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') { + this.one('webkitendfullscreen', endFn); + + this.trigger('fullscreenchange', { isFullscreen: true }); + } + }; + + this.on('webkitbeginfullscreen', beginFn); + this.on('dispose', function () { + _this6.off('webkitbeginfullscreen', beginFn); + _this6.off('webkitendfullscreen', endFn); + }); + }; + + /** + * Check if fullscreen is supported on the current playback device. + * + * @return {boolean} + * - True if fullscreen is supported. + * - False if fullscreen is not supported. + */ + + + Html5.prototype.supportsFullScreen = function supportsFullScreen() { + if (typeof this.el_.webkitEnterFullScreen === 'function') { + var userAgent = window_1.navigator && window_1.navigator.userAgent || ''; + + // Seems to be broken in Chromium/Chrome && Safari in Leopard + if (/Android/.test(userAgent) || !/Chrome|Mac OS X 10.5/.test(userAgent)) { + return true; + } + } + return false; + }; + + /** + * Request that the `HTML5` Tech enter fullscreen. + */ + + + Html5.prototype.enterFullScreen = function enterFullScreen() { + var video = this.el_; + + if (video.paused && video.networkState <= video.HAVE_METADATA) { + // attempt to prime the video element for programmatic access + // this isn't necessary on the desktop but shouldn't hurt + this.el_.play(); + + // playing and pausing synchronously during the transition to fullscreen + // can get iOS ~6.1 devices into a play/pause loop + this.setTimeout(function () { + video.pause(); + video.webkitEnterFullScreen(); + }, 0); + } else { + video.webkitEnterFullScreen(); + } + }; + + /** + * Request that the `HTML5` Tech exit fullscreen. + */ + + + Html5.prototype.exitFullScreen = function exitFullScreen() { + this.el_.webkitExitFullScreen(); + }; + + /** + * A getter/setter for the `Html5` Tech's source object. + * > Note: Please use {@link Html5#setSource} + * + * @param {Tech~SourceObject} [src] + * The source object you want to set on the `HTML5` techs element. + * + * @return {Tech~SourceObject|undefined} + * - The current source object when a source is not passed in. + * - undefined when setting + * + * @deprecated Since version 5. + */ + + + Html5.prototype.src = function src(_src) { + if (_src === undefined) { + return this.el_.src; + } + + // Setting src through `src` instead of `setSrc` will be deprecated + this.setSrc(_src); + }; + + /** + * Reset the tech by removing all sources and then calling + * {@link Html5.resetMediaElement}. + */ + + + Html5.prototype.reset = function reset() { + Html5.resetMediaElement(this.el_); + }; + + /** + * Get the current source on the `HTML5` Tech. Falls back to returning the source from + * the HTML5 media element. + * + * @return {Tech~SourceObject} + * The current source object from the HTML5 tech. With a fallback to the + * elements source. + */ + + + Html5.prototype.currentSrc = function currentSrc() { + if (this.currentSource_) { + return this.currentSource_.src; + } + return this.el_.currentSrc; + }; + + /** + * Set controls attribute for the HTML5 media Element. + * + * @param {string} val + * Value to set the controls attribute to + */ + + + Html5.prototype.setControls = function setControls(val) { + this.el_.controls = !!val; + }; + + /** + * Create and returns a remote {@link TextTrack} object. + * + * @param {string} kind + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata) + * + * @param {string} [label] + * Label to identify the text track + * + * @param {string} [language] + * Two letter language abbreviation + * + * @return {TextTrack} + * The TextTrack that gets created. + */ + + + Html5.prototype.addTextTrack = function addTextTrack(kind, label, language) { + if (!this.featuresNativeTextTracks) { + return _Tech.prototype.addTextTrack.call(this, kind, label, language); + } + + return this.el_.addTextTrack(kind, label, language); + }; + + /** + * Creates either native TextTrack or an emulated TextTrack depending + * on the value of `featuresNativeTextTracks` + * + * @param {Object} options + * The object should contain the options to initialize the TextTrack with. + * + * @param {string} [options.kind] + * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata). + * + * @param {string} [options.label] + * Label to identify the text track + * + * @param {string} [options.language] + * Two letter language abbreviation. + * + * @param {boolean} [options.default] + * Default this track to on. + * + * @param {string} [options.id] + * The internal id to assign this track. + * + * @param {string} [options.src] + * A source url for the track. + * + * @return {HTMLTrackElement} + * The track element that gets created. + */ + + + Html5.prototype.createRemoteTextTrack = function createRemoteTextTrack(options) { + if (!this.featuresNativeTextTracks) { + return _Tech.prototype.createRemoteTextTrack.call(this, options); + } + var htmlTrackElement = document_1.createElement('track'); + + if (options.kind) { + htmlTrackElement.kind = options.kind; + } + if (options.label) { + htmlTrackElement.label = options.label; + } + if (options.language || options.srclang) { + htmlTrackElement.srclang = options.language || options.srclang; + } + if (options.default) { + htmlTrackElement.default = options.default; + } + if (options.id) { + htmlTrackElement.id = options.id; + } + if (options.src) { + htmlTrackElement.src = options.src; + } + + return htmlTrackElement; + }; + + /** + * Creates a remote text track object and returns an html track element. + * + * @param {Object} options The object should contain values for + * kind, language, label, and src (location of the WebVTT file) + * @param {Boolean} [manualCleanup=true] if set to false, the TextTrack will be + * automatically removed from the video element whenever the source changes + * @return {HTMLTrackElement} An Html Track Element. + * This can be an emulated {@link HTMLTrackElement} or a native one. + * @deprecated The default value of the "manualCleanup" parameter will default + * to "false" in upcoming versions of Video.js + */ + + + Html5.prototype.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) { + var htmlTrackElement = _Tech.prototype.addRemoteTextTrack.call(this, options, manualCleanup); + + if (this.featuresNativeTextTracks) { + this.el().appendChild(htmlTrackElement); + } + + return htmlTrackElement; + }; + + /** + * Remove remote `TextTrack` from `TextTrackList` object + * + * @param {TextTrack} track + * `TextTrack` object to remove + */ + + + Html5.prototype.removeRemoteTextTrack = function removeRemoteTextTrack(track) { + _Tech.prototype.removeRemoteTextTrack.call(this, track); + + if (this.featuresNativeTextTracks) { + var tracks = this.$$('track'); + + var i = tracks.length; + + while (i--) { + if (track === tracks[i] || track === tracks[i].track) { + this.el().removeChild(tracks[i]); + } + } + } + }; + + /** + * Gets available media playback quality metrics as specified by the W3C's Media + * Playback Quality API. + * + * @see [Spec]{@link https://wicg.github.io/media-playback-quality} + * + * @return {Object} + * An object with supported media playback quality metrics + */ + + + Html5.prototype.getVideoPlaybackQuality = function getVideoPlaybackQuality() { + if (typeof this.el().getVideoPlaybackQuality === 'function') { + return this.el().getVideoPlaybackQuality(); + } + + var videoPlaybackQuality = {}; + + if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') { + videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount; + videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount; + } + + if (window_1.performance && typeof window_1.performance.now === 'function') { + videoPlaybackQuality.creationTime = window_1.performance.now(); + } else if (window_1.performance && window_1.performance.timing && typeof window_1.performance.timing.navigationStart === 'number') { + videoPlaybackQuality.creationTime = window_1.Date.now() - window_1.performance.timing.navigationStart; + } + + return videoPlaybackQuality; + }; + + return Html5; + }(Tech); + + /* HTML5 Support Testing ---------------------------------------------------- */ + + if (isReal()) { + + /** + * Element for testing browser HTML5 media capabilities + * + * @type {Element} + * @constant + * @private + */ + Html5.TEST_VID = document_1.createElement('video'); + var track = document_1.createElement('track'); + + track.kind = 'captions'; + track.srclang = 'en'; + track.label = 'English'; + Html5.TEST_VID.appendChild(track); + } + + /** + * Check if HTML5 media is supported by this browser/device. + * + * @return {boolean} + * - True if HTML5 media is supported. + * - False if HTML5 media is not supported. + */ + Html5.isSupported = function () { + // IE with no Media Player is a LIAR! (#984) + try { + Html5.TEST_VID.volume = 0.5; + } catch (e) { + return false; + } + + return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType); + }; + + /** + * Check if the tech can support the given type + * + * @param {string} type + * The mimetype to check + * @return {string} 'probably', 'maybe', or '' (empty string) + */ + Html5.canPlayType = function (type) { + return Html5.TEST_VID.canPlayType(type); + }; + + /** + * Check if the tech can support the given source + * @param {Object} srcObj + * The source object + * @param {Object} options + * The options passed to the tech + * @return {string} 'probably', 'maybe', or '' (empty string) + */ + Html5.canPlaySource = function (srcObj, options) { + return Html5.canPlayType(srcObj.type); + }; + + /** + * Check if the volume can be changed in this browser/device. + * Volume cannot be changed in a lot of mobile devices. + * Specifically, it can't be changed from 1 on iOS. + * + * @return {boolean} + * - True if volume can be controlled + * - False otherwise + */ + Html5.canControlVolume = function () { + // IE will error if Windows Media Player not installed #3315 + try { + var volume = Html5.TEST_VID.volume; + + Html5.TEST_VID.volume = volume / 2 + 0.1; + return volume !== Html5.TEST_VID.volume; + } catch (e) { + return false; + } + }; + + /** + * Check if the volume can be muted in this browser/device. + * Some devices, e.g. iOS, don't allow changing volume + * but permits muting/unmuting. + * + * @return {bolean} + * - True if volume can be muted + * - False otherwise + */ + Html5.canMuteVolume = function () { + try { + var muted = Html5.TEST_VID.muted; + + // in some versions of iOS muted property doesn't always + // work, so we want to set both property and attribute + Html5.TEST_VID.muted = !muted; + if (Html5.TEST_VID.muted) { + setAttribute(Html5.TEST_VID, 'muted', 'muted'); + } else { + removeAttribute(Html5.TEST_VID, 'muted', 'muted'); + } + return muted !== Html5.TEST_VID.muted; + } catch (e) { + return false; + } + }; + + /** + * Check if the playback rate can be changed in this browser/device. + * + * @return {boolean} + * - True if playback rate can be controlled + * - False otherwise + */ + Html5.canControlPlaybackRate = function () { + // Playback rate API is implemented in Android Chrome, but doesn't do anything + // https://github.com/videojs/video.js/issues/3180 + if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) { + return false; + } + // IE will error if Windows Media Player not installed #3315 + try { + var playbackRate = Html5.TEST_VID.playbackRate; + + Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1; + return playbackRate !== Html5.TEST_VID.playbackRate; + } catch (e) { + return false; + } + }; + + /** + * Check if we can override a video/audio elements attributes, with + * Object.defineProperty. + * + * @return {boolean} + * - True if builtin attributes can be overridden + * - False otherwise + */ + Html5.canOverrideAttributes = function () { + // if we cannot overwrite the src/innerHTML property, there is no support + // iOS 7 safari for instance cannot do this. + try { + var noop = function noop() {}; + + Object.defineProperty(document_1.createElement('video'), 'src', { get: noop, set: noop }); + Object.defineProperty(document_1.createElement('audio'), 'src', { get: noop, set: noop }); + Object.defineProperty(document_1.createElement('video'), 'innerHTML', { get: noop, set: noop }); + Object.defineProperty(document_1.createElement('audio'), 'innerHTML', { get: noop, set: noop }); + } catch (e) { + return false; + } + + return true; + }; + + /** + * Check to see if native `TextTrack`s are supported by this browser/device. + * + * @return {boolean} + * - True if native `TextTrack`s are supported. + * - False otherwise + */ + Html5.supportsNativeTextTracks = function () { + return IS_ANY_SAFARI || IS_IOS && IS_CHROME; + }; + + /** + * Check to see if native `VideoTrack`s are supported by this browser/device + * + * @return {boolean} + * - True if native `VideoTrack`s are supported. + * - False otherwise + */ + Html5.supportsNativeVideoTracks = function () { + return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks); + }; + + /** + * Check to see if native `AudioTrack`s are supported by this browser/device + * + * @return {boolean} + * - True if native `AudioTrack`s are supported. + * - False otherwise + */ + Html5.supportsNativeAudioTracks = function () { + return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks); + }; + + /** + * An array of events available on the Html5 tech. + * + * @private + * @type {Array} + */ + Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange']; + + /** + * Boolean indicating whether the `Tech` supports volume control. + * + * @type {boolean} + * @default {@link Html5.canControlVolume} + */ + Html5.prototype.featuresVolumeControl = Html5.canControlVolume(); + + /** + * Boolean indicating whether the `Tech` supports muting volume. + * + * @type {bolean} + * @default {@link Html5.canMuteVolume} + */ + Html5.prototype.featuresMuteControl = Html5.canMuteVolume(); + + /** + * Boolean indicating whether the `Tech` supports changing the speed at which the media + * plays. Examples: + * - Set player to play 2x (twice) as fast + * - Set player to play 0.5x (half) as fast + * + * @type {boolean} + * @default {@link Html5.canControlPlaybackRate} + */ + Html5.prototype.featuresPlaybackRate = Html5.canControlPlaybackRate(); + + /** + * Boolean indicating whether the `Tech` supports the `sourceset` event. + * + * @type {boolean} + * @default + */ + Html5.prototype.featuresSourceset = Html5.canOverrideAttributes(); + + /** + * Boolean indicating whether the `HTML5` tech currently supports the media element + * moving in the DOM. iOS breaks if you move the media element, so this is set this to + * false there. Everywhere else this should be true. + * + * @type {boolean} + * @default + */ + Html5.prototype.movingMediaElementInDOM = !IS_IOS; + + // TODO: Previous comment: No longer appears to be used. Can probably be removed. + // Is this true? + /** + * Boolean indicating whether the `HTML5` tech currently supports automatic media resize + * when going into fullscreen. + * + * @type {boolean} + * @default + */ + Html5.prototype.featuresFullscreenResize = true; + + /** + * Boolean indicating whether the `HTML5` tech currently supports the progress event. + * If this is false, manual `progress` events will be triggered instead. + * + * @type {boolean} + * @default + */ + Html5.prototype.featuresProgressEvents = true; + + /** + * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event. + * If this is false, manual `timeupdate` events will be triggered instead. + * + * @default + */ + Html5.prototype.featuresTimeupdateEvents = true; + + /** + * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s. + * + * @type {boolean} + * @default {@link Html5.supportsNativeTextTracks} + */ + Html5.prototype.featuresNativeTextTracks = Html5.supportsNativeTextTracks(); + + /** + * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s. + * + * @type {boolean} + * @default {@link Html5.supportsNativeVideoTracks} + */ + Html5.prototype.featuresNativeVideoTracks = Html5.supportsNativeVideoTracks(); + + /** + * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s. + * + * @type {boolean} + * @default {@link Html5.supportsNativeAudioTracks} + */ + Html5.prototype.featuresNativeAudioTracks = Html5.supportsNativeAudioTracks(); + + // HTML5 Feature detection and Device Fixes --------------------------------- // + var canPlayType = Html5.TEST_VID && Html5.TEST_VID.constructor.prototype.canPlayType; + var mpegurlRE = /^application\/(?:x-|vnd\.apple\.)mpegurl/i; + + Html5.patchCanPlayType = function () { + + // Android 4.0 and above can play HLS to some extent but it reports being unable to do so + // Firefox and Chrome report correctly + if (ANDROID_VERSION >= 4.0 && !IS_FIREFOX && !IS_CHROME) { + Html5.TEST_VID.constructor.prototype.canPlayType = function (type) { + if (type && mpegurlRE.test(type)) { + return 'maybe'; + } + return canPlayType.call(this, type); + }; + } + }; + + Html5.unpatchCanPlayType = function () { + var r = Html5.TEST_VID.constructor.prototype.canPlayType; + + Html5.TEST_VID.constructor.prototype.canPlayType = canPlayType; + return r; + }; + + // by default, patch the media element + Html5.patchCanPlayType(); + + Html5.disposeMediaElement = function (el) { + if (!el) { + return; + } + + if (el.parentNode) { + el.parentNode.removeChild(el); + } + + // remove any child track or source nodes to prevent their loading + while (el.hasChildNodes()) { + el.removeChild(el.firstChild); + } + + // remove any src reference. not setting `src=''` because that causes a warning + // in firefox + el.removeAttribute('src'); + + // force the media element to update its loading state by calling load() + // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793) + if (typeof el.load === 'function') { + // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473) + (function () { + try { + el.load(); + } catch (e) { + // not supported + } + })(); + } + }; + + Html5.resetMediaElement = function (el) { + if (!el) { + return; + } + + var sources = el.querySelectorAll('source'); + var i = sources.length; + + while (i--) { + el.removeChild(sources[i]); + } + + // remove any src reference. + // not setting `src=''` because that throws an error + el.removeAttribute('src'); + + if (typeof el.load === 'function') { + // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473) + (function () { + try { + el.load(); + } catch (e) { + // satisfy linter + } + })(); + } + }; + + /* Native HTML5 element property wrapping ----------------------------------- */ + // Wrap native boolean attributes with getters that check both property and attribute + // The list is as followed: + // muted, defaultMuted, autoplay, controls, loop, playsinline + [ + /** + * Get the value of `muted` from the media element. `muted` indicates + * that the volume for the media should be set to silent. This does not actually change + * the `volume` attribute. + * + * @method Html5#muted + * @return {boolean} + * - True if the value of `volume` should be ignored and the audio set to silent. + * - False if the value of `volume` should be used. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted} + */ + 'muted', + + /** + * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates + * whether the media should start muted or not. Only changes the default state of the + * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the + * current state. + * + * @method Html5#defaultMuted + * @return {boolean} + * - The value of `defaultMuted` from the media element. + * - True indicates that the media should start muted. + * - False indicates that the media should not start muted + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted} + */ + 'defaultMuted', + + /** + * Get the value of `autoplay` from the media element. `autoplay` indicates + * that the media should start to play as soon as the page is ready. + * + * @method Html5#autoplay + * @return {boolean} + * - The value of `autoplay` from the media element. + * - True indicates that the media should start as soon as the page loads. + * - False indicates that the media should not start as soon as the page loads. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay} + */ + 'autoplay', + + /** + * Get the value of `controls` from the media element. `controls` indicates + * whether the native media controls should be shown or hidden. + * + * @method Html5#controls + * @return {boolean} + * - The value of `controls` from the media element. + * - True indicates that native controls should be showing. + * - False indicates that native controls should be hidden. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls} + */ + 'controls', + + /** + * Get the value of `loop` from the media element. `loop` indicates + * that the media should return to the start of the media and continue playing once + * it reaches the end. + * + * @method Html5#loop + * @return {boolean} + * - The value of `loop` from the media element. + * - True indicates that playback should seek back to start once + * the end of a media is reached. + * - False indicates that playback should not loop back to the start when the + * end of the media is reached. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop} + */ + 'loop', + + /** + * Get the value of `playsinline` from the media element. `playsinline` indicates + * to the browser that non-fullscreen playback is preferred when fullscreen + * playback is the native default, such as in iOS Safari. + * + * @method Html5#playsinline + * @return {boolean} + * - The value of `playsinline` from the media element. + * - True indicates that the media should play inline. + * - False indicates that the media should not play inline. + * + * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline} + */ + 'playsinline'].forEach(function (prop) { + Html5.prototype[prop] = function () { + return this.el_[prop] || this.el_.hasAttribute(prop); + }; + }); + + // Wrap native boolean attributes with setters that set both property and attribute + // The list is as followed: + // setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline + // setControls is special-cased above + [ + /** + * Set the value of `muted` on the media element. `muted` indicates that the current + * audio level should be silent. + * + * @method Html5#setMuted + * @param {boolean} muted + * - True if the audio should be set to silent + * - False otherwise + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted} + */ + 'muted', + + /** + * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current + * audio level should be silent, but will only effect the muted level on intial playback.. + * + * @method Html5.prototype.setDefaultMuted + * @param {boolean} defaultMuted + * - True if the audio should be set to silent + * - False otherwise + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted} + */ + 'defaultMuted', + + /** + * Set the value of `autoplay` on the media element. `autoplay` indicates + * that the media should start to play as soon as the page is ready. + * + * @method Html5#setAutoplay + * @param {boolean} autoplay + * - True indicates that the media should start as soon as the page loads. + * - False indicates that the media should not start as soon as the page loads. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay} + */ + 'autoplay', + + /** + * Set the value of `loop` on the media element. `loop` indicates + * that the media should return to the start of the media and continue playing once + * it reaches the end. + * + * @method Html5#setLoop + * @param {boolean} loop + * - True indicates that playback should seek back to start once + * the end of a media is reached. + * - False indicates that playback should not loop back to the start when the + * end of the media is reached. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop} + */ + 'loop', + + /** + * Set the value of `playsinline` from the media element. `playsinline` indicates + * to the browser that non-fullscreen playback is preferred when fullscreen + * playback is the native default, such as in iOS Safari. + * + * @method Html5#setPlaysinline + * @param {boolean} playsinline + * - True indicates that the media should play inline. + * - False indicates that the media should not play inline. + * + * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline} + */ + 'playsinline'].forEach(function (prop) { + Html5.prototype['set' + toTitleCase(prop)] = function (v) { + this.el_[prop] = v; + + if (v) { + this.el_.setAttribute(prop, prop); + } else { + this.el_.removeAttribute(prop); + } + }; + }); + + // Wrap native properties with a getter + // The list is as followed + // paused, currentTime, buffered, volume, poster, preload, error, seeking + // seekable, ended, playbackRate, defaultPlaybackRate, played, networkState + // readyState, videoWidth, videoHeight + [ + /** + * Get the value of `paused` from the media element. `paused` indicates whether the media element + * is currently paused or not. + * + * @method Html5#paused + * @return {boolean} + * The value of `paused` from the media element. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused} + */ + 'paused', + + /** + * Get the value of `currentTime` from the media element. `currentTime` indicates + * the current second that the media is at in playback. + * + * @method Html5#currentTime + * @return {number} + * The value of `currentTime` from the media element. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime} + */ + 'currentTime', + + /** + * Get the value of `buffered` from the media element. `buffered` is a `TimeRange` + * object that represents the parts of the media that are already downloaded and + * available for playback. + * + * @method Html5#buffered + * @return {TimeRange} + * The value of `buffered` from the media element. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered} + */ + 'buffered', + + /** + * Get the value of `volume` from the media element. `volume` indicates + * the current playback volume of audio for a media. `volume` will be a value from 0 + * (silent) to 1 (loudest and default). + * + * @method Html5#volume + * @return {number} + * The value of `volume` from the media element. Value will be between 0-1. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume} + */ + 'volume', + + /** + * Get the value of `poster` from the media element. `poster` indicates + * that the url of an image file that can/will be shown when no media data is available. + * + * @method Html5#poster + * @return {string} + * The value of `poster` from the media element. Value will be a url to an + * image. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster} + */ + 'poster', + + /** + * Get the value of `preload` from the media element. `preload` indicates + * what should download before the media is interacted with. It can have the following + * values: + * - none: nothing should be downloaded + * - metadata: poster and the first few frames of the media may be downloaded to get + * media dimensions and other metadata + * - auto: allow the media and metadata for the media to be downloaded before + * interaction + * + * @method Html5#preload + * @return {string} + * The value of `preload` from the media element. Will be 'none', 'metadata', + * or 'auto'. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload} + */ + 'preload', + + /** + * Get the value of the `error` from the media element. `error` indicates any + * MediaError that may have occurred during playback. If error returns null there is no + * current error. + * + * @method Html5#error + * @return {MediaError|null} + * The value of `error` from the media element. Will be `MediaError` if there + * is a current error and null otherwise. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error} + */ + 'error', + + /** + * Get the value of `seeking` from the media element. `seeking` indicates whether the + * media is currently seeking to a new position or not. + * + * @method Html5#seeking + * @return {boolean} + * - The value of `seeking` from the media element. + * - True indicates that the media is currently seeking to a new position. + * - False indicates that the media is not seeking to a new position at this time. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking} + */ + 'seeking', + + /** + * Get the value of `seekable` from the media element. `seekable` returns a + * `TimeRange` object indicating ranges of time that can currently be `seeked` to. + * + * @method Html5#seekable + * @return {TimeRange} + * The value of `seekable` from the media element. A `TimeRange` object + * indicating the current ranges of time that can be seeked to. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable} + */ + 'seekable', + + /** + * Get the value of `ended` from the media element. `ended` indicates whether + * the media has reached the end or not. + * + * @method Html5#ended + * @return {boolean} + * - The value of `ended` from the media element. + * - True indicates that the media has ended. + * - False indicates that the media has not ended. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended} + */ + 'ended', + + /** + * Get the value of `playbackRate` from the media element. `playbackRate` indicates + * the rate at which the media is currently playing back. Examples: + * - if playbackRate is set to 2, media will play twice as fast. + * - if playbackRate is set to 0.5, media will play half as fast. + * + * @method Html5#playbackRate + * @return {number} + * The value of `playbackRate` from the media element. A number indicating + * the current playback speed of the media, where 1 is normal speed. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate} + */ + 'playbackRate', + + /** + * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates + * the rate at which the media is currently playing back. This value will not indicate the current + * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that. + * + * Examples: + * - if defaultPlaybackRate is set to 2, media will play twice as fast. + * - if defaultPlaybackRate is set to 0.5, media will play half as fast. + * + * @method Html5.prototype.defaultPlaybackRate + * @return {number} + * The value of `defaultPlaybackRate` from the media element. A number indicating + * the current playback speed of the media, where 1 is normal speed. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate} + */ + 'defaultPlaybackRate', + + /** + * Get the value of `played` from the media element. `played` returns a `TimeRange` + * object representing points in the media timeline that have been played. + * + * @method Html5#played + * @return {TimeRange} + * The value of `played` from the media element. A `TimeRange` object indicating + * the ranges of time that have been played. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played} + */ + 'played', + + /** + * Get the value of `networkState` from the media element. `networkState` indicates + * the current network state. It returns an enumeration from the following list: + * - 0: NETWORK_EMPTY + * - 1: NETWORK_IDLE + * - 2: NETWORK_LOADING + * - 3: NETWORK_NO_SOURCE + * + * @method Html5#networkState + * @return {number} + * The value of `networkState` from the media element. This will be a number + * from the list in the description. + * + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate} + */ + 'networkState', + + /** + * Get the value of `readyState` from the media element. `readyState` indicates + * the current state of the media element. It returns an enumeration from the + * following list: + * - 0: HAVE_NOTHING + * - 1: HAVE_METADATA + * - 2: HAVE_CURRENT_DATA + * - 3: HAVE_FUTURE_DATA + * - 4: HAVE_ENOUGH_DATA + * + * @method Html5#readyState + * @return {number} + * The value of `readyState` from the media element. This will be a number + * from the list in the description. + * + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states} + */ + 'readyState', + + /** + * Get the value of `videoWidth` from the video element. `videoWidth` indicates + * the current width of the video in css pixels. + * + * @method Html5#videoWidth + * @return {number} + * The value of `videoWidth` from the video element. This will be a number + * in css pixels. + * + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth} + */ + 'videoWidth', + + /** + * Get the value of `videoHeight` from the video element. `videoHeight` indicates + * the current height of the video in css pixels. + * + * @method Html5#videoHeight + * @return {number} + * The value of `videoHeight` from the video element. This will be a number + * in css pixels. + * + * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth} + */ + 'videoHeight'].forEach(function (prop) { + Html5.prototype[prop] = function () { + return this.el_[prop]; + }; + }); + + // Wrap native properties with a setter in this format: + // set + toTitleCase(name) + // The list is as follows: + // setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate + [ + /** + * Set the value of `volume` on the media element. `volume` indicates the current + * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and + * so on. + * + * @method Html5#setVolume + * @param {number} percentAsDecimal + * The volume percent as a decimal. Valid range is from 0-1. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume} + */ + 'volume', + + /** + * Set the value of `src` on the media element. `src` indicates the current + * {@link Tech~SourceObject} for the media. + * + * @method Html5#setSrc + * @param {Tech~SourceObject} src + * The source object to set as the current source. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src} + */ + 'src', + + /** + * Set the value of `poster` on the media element. `poster` is the url to + * an image file that can/will be shown when no media data is available. + * + * @method Html5#setPoster + * @param {string} poster + * The url to an image that should be used as the `poster` for the media + * element. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster} + */ + 'poster', + + /** + * Set the value of `preload` on the media element. `preload` indicates + * what should download before the media is interacted with. It can have the following + * values: + * - none: nothing should be downloaded + * - metadata: poster and the first few frames of the media may be downloaded to get + * media dimensions and other metadata + * - auto: allow the media and metadata for the media to be downloaded before + * interaction + * + * @method Html5#setPreload + * @param {string} preload + * The value of `preload` to set on the media element. Must be 'none', 'metadata', + * or 'auto'. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload} + */ + 'preload', + + /** + * Set the value of `playbackRate` on the media element. `playbackRate` indicates + * the rate at which the media should play back. Examples: + * - if playbackRate is set to 2, media will play twice as fast. + * - if playbackRate is set to 0.5, media will play half as fast. + * + * @method Html5#setPlaybackRate + * @return {number} + * The value of `playbackRate` from the media element. A number indicating + * the current playback speed of the media, where 1 is normal speed. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate} + */ + 'playbackRate', + + /** + * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates + * the rate at which the media should play back upon initial startup. Changing this value + * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}. + * + * Example Values: + * - if playbackRate is set to 2, media will play twice as fast. + * - if playbackRate is set to 0.5, media will play half as fast. + * + * @method Html5.prototype.setDefaultPlaybackRate + * @return {number} + * The value of `defaultPlaybackRate` from the media element. A number indicating + * the current playback speed of the media, where 1 is normal speed. + * + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate} + */ + 'defaultPlaybackRate'].forEach(function (prop) { + Html5.prototype['set' + toTitleCase(prop)] = function (v) { + this.el_[prop] = v; + }; + }); + + // wrap native functions with a function + // The list is as follows: + // pause, load, play + [ + /** + * A wrapper around the media elements `pause` function. This will call the `HTML5` + * media elements `pause` function. + * + * @method Html5#pause + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause} + */ + 'pause', + + /** + * A wrapper around the media elements `load` function. This will call the `HTML5`s + * media element `load` function. + * + * @method Html5#load + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load} + */ + 'load', + + /** + * A wrapper around the media elements `play` function. This will call the `HTML5`s + * media element `play` function. + * + * @method Html5#play + * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play} + */ + 'play'].forEach(function (prop) { + Html5.prototype[prop] = function () { + return this.el_[prop](); + }; + }); + + Tech.withSourceHandlers(Html5); + + /** + * Native source handler for Html5, simply passes the source to the media element. + * + * @property {Tech~SourceObject} source + * The source object + * + * @property {Html5} tech + * The instance of the HTML5 tech. + */ + Html5.nativeSourceHandler = {}; + + /** + * Check if the media element can play the given mime type. + * + * @param {string} type + * The mimetype to check + * + * @return {string} + * 'probably', 'maybe', or '' (empty string) + */ + Html5.nativeSourceHandler.canPlayType = function (type) { + // IE without MediaPlayer throws an error (#519) + try { + return Html5.TEST_VID.canPlayType(type); + } catch (e) { + return ''; + } + }; + + /** + * Check if the media element can handle a source natively. + * + * @param {Tech~SourceObject} source + * The source object + * + * @param {Object} [options] + * Options to be passed to the tech. + * + * @return {string} + * 'probably', 'maybe', or '' (empty string). + */ + Html5.nativeSourceHandler.canHandleSource = function (source, options) { + + // If a type was provided we should rely on that + if (source.type) { + return Html5.nativeSourceHandler.canPlayType(source.type); + + // If no type, fall back to checking 'video/[EXTENSION]' + } else if (source.src) { + var ext = getFileExtension(source.src); + + return Html5.nativeSourceHandler.canPlayType('video/' + ext); + } + + return ''; + }; + + /** + * Pass the source to the native media element. + * + * @param {Tech~SourceObject} source + * The source object + * + * @param {Html5} tech + * The instance of the Html5 tech + * + * @param {Object} [options] + * The options to pass to the source + */ + Html5.nativeSourceHandler.handleSource = function (source, tech, options) { + tech.setSrc(source.src); + }; + + /** + * A noop for the native dispose function, as cleanup is not needed. + */ + Html5.nativeSourceHandler.dispose = function () {}; + + // Register the native source handler + Html5.registerSourceHandler(Html5.nativeSourceHandler); + + Tech.registerTech('Html5', Html5); + + var _templateObject$2 = taggedTemplateLiteralLoose(['\n Using the tech directly can be dangerous. I hope you know what you\'re doing.\n See https://github.com/videojs/video.js/issues/2617 for more info.\n '], ['\n Using the tech directly can be dangerous. I hope you know what you\'re doing.\n See https://github.com/videojs/video.js/issues/2617 for more info.\n ']); + + // The following tech events are simply re-triggered + // on the player when they happen + var TECH_EVENTS_RETRIGGER = [ + /** + * Fired while the user agent is downloading media data. + * + * @event Player#progress + * @type {EventTarget~Event} + */ + /** + * Retrigger the `progress` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechProgress_ + * @fires Player#progress + * @listens Tech#progress + */ + 'progress', + + /** + * Fires when the loading of an audio/video is aborted. + * + * @event Player#abort + * @type {EventTarget~Event} + */ + /** + * Retrigger the `abort` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechAbort_ + * @fires Player#abort + * @listens Tech#abort + */ + 'abort', + + /** + * Fires when the browser is intentionally not getting media data. + * + * @event Player#suspend + * @type {EventTarget~Event} + */ + /** + * Retrigger the `suspend` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechSuspend_ + * @fires Player#suspend + * @listens Tech#suspend + */ + 'suspend', + + /** + * Fires when the current playlist is empty. + * + * @event Player#emptied + * @type {EventTarget~Event} + */ + /** + * Retrigger the `emptied` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechEmptied_ + * @fires Player#emptied + * @listens Tech#emptied + */ + 'emptied', + /** + * Fires when the browser is trying to get media data, but data is not available. + * + * @event Player#stalled + * @type {EventTarget~Event} + */ + /** + * Retrigger the `stalled` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechStalled_ + * @fires Player#stalled + * @listens Tech#stalled + */ + 'stalled', + + /** + * Fires when the browser has loaded meta data for the audio/video. + * + * @event Player#loadedmetadata + * @type {EventTarget~Event} + */ + /** + * Retrigger the `stalled` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechLoadedmetadata_ + * @fires Player#loadedmetadata + * @listens Tech#loadedmetadata + */ + 'loadedmetadata', + + /** + * Fires when the browser has loaded the current frame of the audio/video. + * + * @event Player#loadeddata + * @type {event} + */ + /** + * Retrigger the `loadeddata` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechLoaddeddata_ + * @fires Player#loadeddata + * @listens Tech#loadeddata + */ + 'loadeddata', + + /** + * Fires when the current playback position has changed. + * + * @event Player#timeupdate + * @type {event} + */ + /** + * Retrigger the `timeupdate` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechTimeUpdate_ + * @fires Player#timeupdate + * @listens Tech#timeupdate + */ + 'timeupdate', + + /** + * Fires when the video's intrinsic dimensions change + * + * @event Player#resize + * @type {event} + */ + /** + * Retrigger the `resize` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechResize_ + * @fires Player#resize + * @listens Tech#resize + */ + 'resize', + + /** + * Fires when the volume has been changed + * + * @event Player#volumechange + * @type {event} + */ + /** + * Retrigger the `volumechange` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechVolumechange_ + * @fires Player#volumechange + * @listens Tech#volumechange + */ + 'volumechange', + + /** + * Fires when the text track has been changed + * + * @event Player#texttrackchange + * @type {event} + */ + /** + * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}. + * + * @private + * @method Player#handleTechTexttrackchange_ + * @fires Player#texttrackchange + * @listens Tech#texttrackchange + */ + 'texttrackchange']; + + // events to queue when playback rate is zero + // this is a hash for the sole purpose of mapping non-camel-cased event names + // to camel-cased function names + var TECH_EVENTS_QUEUE = { + canplay: 'CanPlay', + canplaythrough: 'CanPlayThrough', + playing: 'Playing', + seeked: 'Seeked' + }; + + /** + * An instance of the `Player` class is created when any of the Video.js setup methods + * are used to initialize a video. + * + * After an instance has been created it can be accessed globally in two ways: + * 1. By calling `videojs('example_video_1');` + * 2. By using it directly via `videojs.players.example_video_1;` + * + * @extends Component + */ + + var Player = function (_Component) { + inherits(Player, _Component); + + /** + * Create an instance of this class. + * + * @param {Element} tag + * The original video DOM element used for configuring options. + * + * @param {Object} [options] + * Object of option names and values. + * + * @param {Component~ReadyCallback} [ready] + * Ready callback function. + */ + function Player(tag, options, ready) { + classCallCheck(this, Player); + + // Make sure tag ID exists + tag.id = tag.id || options.id || 'vjs_video_' + newGUID(); + + // Set Options + // The options argument overrides options set in the video tag + // which overrides globally set options. + // This latter part coincides with the load order + // (tag must exist before Player) + options = assign(Player.getTagSettings(tag), options); + + // Delay the initialization of children because we need to set up + // player properties first, and can't use `this` before `super()` + options.initChildren = false; + + // Same with creating the element + options.createEl = false; + + // don't auto mixin the evented mixin + options.evented = false; + + // we don't want the player to report touch activity on itself + // see enableTouchActivity in Component + options.reportTouchActivity = false; + + // If language is not set, get the closest lang attribute + if (!options.language) { + if (typeof tag.closest === 'function') { + var closest = tag.closest('[lang]'); + + if (closest && closest.getAttribute) { + options.language = closest.getAttribute('lang'); + } + } else { + var element = tag; + + while (element && element.nodeType === 1) { + if (getAttributes(element).hasOwnProperty('lang')) { + options.language = element.getAttribute('lang'); + break; + } + element = element.parentNode; + } + } + } + + // Run base component initializing with new options + + // Tracks when a tech changes the poster + var _this = possibleConstructorReturn(this, _Component.call(this, null, options, ready)); + + _this.isPosterFromTech_ = false; + + // Holds callback info that gets queued when playback rate is zero + // and a seek is happening + _this.queuedCallbacks_ = []; + + // Turn off API access because we're loading a new tech that might load asynchronously + _this.isReady_ = false; + + // Init state hasStarted_ + _this.hasStarted_ = false; + + // Init state userActive_ + _this.userActive_ = false; + + // if the global option object was accidentally blown away by + // someone, bail early with an informative error + if (!_this.options_ || !_this.options_.techOrder || !_this.options_.techOrder.length) { + throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?'); + } + + // Store the original tag used to set options + _this.tag = tag; + + // Store the tag attributes used to restore html5 element + _this.tagAttributes = tag && getAttributes(tag); + + // Update current language + _this.language(_this.options_.language); + + // Update Supported Languages + if (options.languages) { + // Normalise player option languages to lowercase + var languagesToLower = {}; + + Object.getOwnPropertyNames(options.languages).forEach(function (name$$1) { + languagesToLower[name$$1.toLowerCase()] = options.languages[name$$1]; + }); + _this.languages_ = languagesToLower; + } else { + _this.languages_ = Player.prototype.options_.languages; + } + + // Cache for video property values. + _this.cache_ = {}; + + // Set poster + _this.poster_ = options.poster || ''; + + // Set controls + _this.controls_ = !!options.controls; + + // Set default values for lastVolume + _this.cache_.lastVolume = 1; + + // Original tag settings stored in options + // now remove immediately so native controls don't flash. + // May be turned back on by HTML5 tech if nativeControlsForTouch is true + tag.controls = false; + tag.removeAttribute('controls'); + + // the attribute overrides the option + if (tag.hasAttribute('autoplay')) { + _this.options_.autoplay = true; + } else { + // otherwise use the setter to validate and + // set the correct value. + _this.autoplay(_this.options_.autoplay); + } + + /* + * Store the internal state of scrubbing + * + * @private + * @return {Boolean} True if the user is scrubbing + */ + _this.scrubbing_ = false; + + _this.el_ = _this.createEl(); + + // Set default value for lastPlaybackRate + _this.cache_.lastPlaybackRate = _this.defaultPlaybackRate(); + + // Make this an evented object and use `el_` as its event bus. + evented(_this, { eventBusKey: 'el_' }); + + // We also want to pass the original player options to each component and plugin + // as well so they don't need to reach back into the player for options later. + // We also need to do another copy of this.options_ so we don't end up with + // an infinite loop. + var playerOptionsCopy = mergeOptions(_this.options_); + + // Load plugins + if (options.plugins) { + var plugins = options.plugins; + + Object.keys(plugins).forEach(function (name$$1) { + if (typeof this[name$$1] === 'function') { + this[name$$1](plugins[name$$1]); + } else { + throw new Error('plugin "' + name$$1 + '" does not exist'); + } + }, _this); + } + + _this.options_.playerOptions = playerOptionsCopy; + + _this.middleware_ = []; + + _this.initChildren(); + + // Set isAudio based on whether or not an audio tag was used + _this.isAudio(tag.nodeName.toLowerCase() === 'audio'); + + // Update controls className. Can't do this when the controls are initially + // set because the element doesn't exist yet. + if (_this.controls()) { + _this.addClass('vjs-controls-enabled'); + } else { + _this.addClass('vjs-controls-disabled'); + } + + // Set ARIA label and region role depending on player type + _this.el_.setAttribute('role', 'region'); + if (_this.isAudio()) { + _this.el_.setAttribute('aria-label', _this.localize('Audio Player')); + } else { + _this.el_.setAttribute('aria-label', _this.localize('Video Player')); + } + + if (_this.isAudio()) { + _this.addClass('vjs-audio'); + } + + if (_this.flexNotSupported_()) { + _this.addClass('vjs-no-flex'); + } + + // TODO: Make this smarter. Toggle user state between touching/mousing + // using events, since devices can have both touch and mouse events. + // if (browser.TOUCH_ENABLED) { + // this.addClass('vjs-touch-enabled'); + // } + + // iOS Safari has broken hover handling + if (!IS_IOS) { + _this.addClass('vjs-workinghover'); + } + + // Make player easily findable by ID + Player.players[_this.id_] = _this; + + // Add a major version class to aid css in plugins + var majorVersion = version.split('.')[0]; + + _this.addClass('vjs-v' + majorVersion); + + // When the player is first initialized, trigger activity so components + // like the control bar show themselves if needed + _this.userActive(true); + _this.reportUserActivity(); + + _this.one('play', _this.listenForUserActivity_); + _this.on('fullscreenchange', _this.handleFullscreenChange_); + _this.on('stageclick', _this.handleStageClick_); + + _this.changingSrc_ = false; + _this.playWaitingForReady_ = false; + _this.playOnLoadstart_ = null; + return _this; + } + + /** + * Destroys the video player and does any necessary cleanup. + * + * This is especially helpful if you are dynamically adding and removing videos + * to/from the DOM. + * + * @fires Player#dispose + */ + + + Player.prototype.dispose = function dispose() { + /** + * Called when the player is being disposed of. + * + * @event Player#dispose + * @type {EventTarget~Event} + */ + this.trigger('dispose'); + // prevent dispose from being called twice + this.off('dispose'); + + if (this.styleEl_ && this.styleEl_.parentNode) { + this.styleEl_.parentNode.removeChild(this.styleEl_); + this.styleEl_ = null; + } + + // Kill reference to this player + Player.players[this.id_] = null; + + if (this.tag && this.tag.player) { + this.tag.player = null; + } + + if (this.el_ && this.el_.player) { + this.el_.player = null; + } + + if (this.tech_) { + this.tech_.dispose(); + this.isPosterFromTech_ = false; + this.poster_ = ''; + } + + if (this.playerElIngest_) { + this.playerElIngest_ = null; + } + + if (this.tag) { + this.tag = null; + } + + clearCacheForPlayer(this); + + // the actual .el_ is removed here + _Component.prototype.dispose.call(this); + }; + + /** + * Create the `Player`'s DOM element. + * + * @return {Element} + * The DOM element that gets created. + */ + + + Player.prototype.createEl = function createEl$$1() { + var tag = this.tag; + var el = void 0; + var playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player'); + var divEmbed = this.tag.tagName.toLowerCase() === 'video-js'; + + if (playerElIngest) { + el = this.el_ = tag.parentNode; + } else if (!divEmbed) { + el = this.el_ = _Component.prototype.createEl.call(this, 'div'); + } + + // Copy over all the attributes from the tag, including ID and class + // ID will now reference player box, not the video tag + var attrs = getAttributes(tag); + + if (divEmbed) { + el = this.el_ = tag; + tag = this.tag = document_1.createElement('video'); + while (el.children.length) { + tag.appendChild(el.firstChild); + } + + if (!hasClass(el, 'video-js')) { + addClass(el, 'video-js'); + } + + el.appendChild(tag); + + playerElIngest = this.playerElIngest_ = el; + // move properties over from our custom `video-js` element + // to our new `video` element. This will move things like + // `src` or `controls` that were set via js before the player + // was initialized. + Object.keys(el).forEach(function (k) { + tag[k] = el[k]; + }); + } + + // set tabindex to -1 to remove the video element from the focus order + tag.setAttribute('tabindex', '-1'); + attrs.tabindex = '-1'; + + // Workaround for #4583 (JAWS+IE doesn't announce BPB or play button) + // See https://github.com/FreedomScientific/VFO-standards-support/issues/78 + // Note that we can't detect if JAWS is being used, but this ARIA attribute + // doesn't change behavior of IE11 if JAWS is not being used + if (IE_VERSION) { + tag.setAttribute('role', 'application'); + attrs.role = 'application'; + } + + // Remove width/height attrs from tag so CSS can make it 100% width/height + tag.removeAttribute('width'); + tag.removeAttribute('height'); + + if ('width' in attrs) { + delete attrs.width; + } + if ('height' in attrs) { + delete attrs.height; + } + + Object.getOwnPropertyNames(attrs).forEach(function (attr) { + // don't copy over the class attribute to the player element when we're in a div embed + // the class is already set up properly in the divEmbed case + // and we want to make sure that the `video-js` class doesn't get lost + if (!(divEmbed && attr === 'class')) { + el.setAttribute(attr, attrs[attr]); + } + + if (divEmbed) { + tag.setAttribute(attr, attrs[attr]); + } + }); + + // Update tag id/class for use as HTML5 playback tech + // Might think we should do this after embedding in container so .vjs-tech class + // doesn't flash 100% width/height, but class only applies with .video-js parent + tag.playerId = tag.id; + tag.id += '_html5_api'; + tag.className = 'vjs-tech'; + + // Make player findable on elements + tag.player = el.player = this; + // Default state of video is paused + this.addClass('vjs-paused'); + + // Add a style element in the player that we'll use to set the width/height + // of the player in a way that's still overrideable by CSS, just like the + // video element + if (window_1.VIDEOJS_NO_DYNAMIC_STYLE !== true) { + this.styleEl_ = createStyleElement('vjs-styles-dimensions'); + var defaultsStyleEl = $('.vjs-styles-defaults'); + var head = $('head'); + + head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild); + } + + // Pass in the width/height/aspectRatio options which will update the style el + this.width(this.options_.width); + this.height(this.options_.height); + this.fluid(this.options_.fluid); + this.aspectRatio(this.options_.aspectRatio); + + // Hide any links within the video/audio tag, + // because IE doesn't hide them completely from screen readers. + var links = tag.getElementsByTagName('a'); + + for (var i = 0; i < links.length; i++) { + var linkEl = links.item(i); + + addClass(linkEl, 'vjs-hidden'); + linkEl.setAttribute('hidden', 'hidden'); + } + + // insertElFirst seems to cause the networkState to flicker from 3 to 2, so + // keep track of the original for later so we can know if the source originally failed + tag.initNetworkState_ = tag.networkState; + + // Wrap video tag in div (el/box) container + if (tag.parentNode && !playerElIngest) { + tag.parentNode.insertBefore(el, tag); + } + + // insert the tag as the first child of the player element + // then manually add it to the children array so that this.addChild + // will work properly for other components + // + // Breaks iPhone, fixed in HTML5 setup. + prependTo(tag, el); + this.children_.unshift(tag); + + // Set lang attr on player to ensure CSS :lang() in consistent with player + // if it's been set to something different to the doc + this.el_.setAttribute('lang', this.language_); + + this.el_ = el; + + return el; + }; + + /** + * A getter/setter for the `Player`'s width. Returns the player's configured value. + * To get the current width use `currentWidth()`. + * + * @param {number} [value] + * The value to set the `Player`'s width to. + * + * @return {number} + * The current width of the `Player` when getting. + */ + + + Player.prototype.width = function width(value) { + return this.dimension('width', value); + }; + + /** + * A getter/setter for the `Player`'s height. Returns the player's configured value. + * To get the current height use `currentheight()`. + * + * @param {number} [value] + * The value to set the `Player`'s heigth to. + * + * @return {number} + * The current height of the `Player` when getting. + */ + + + Player.prototype.height = function height(value) { + return this.dimension('height', value); + }; + + /** + * A getter/setter for the `Player`'s width & height. + * + * @param {string} dimension + * This string can be: + * - 'width' + * - 'height' + * + * @param {number} [value] + * Value for dimension specified in the first argument. + * + * @return {number} + * The dimension arguments value when getting (width/height). + */ + + + Player.prototype.dimension = function dimension(_dimension, value) { + var privDimension = _dimension + '_'; + + if (value === undefined) { + return this[privDimension] || 0; + } + + if (value === '') { + // If an empty string is given, reset the dimension to be automatic + this[privDimension] = undefined; + this.updateStyleEl_(); + return; + } + + var parsedVal = parseFloat(value); + + if (isNaN(parsedVal)) { + log$1.error('Improper value "' + value + '" supplied for for ' + _dimension); + return; + } + + this[privDimension] = parsedVal; + this.updateStyleEl_(); + }; + + /** + * A getter/setter/toggler for the vjs-fluid `className` on the `Player`. + * + * @param {boolean} [bool] + * - A value of true adds the class. + * - A value of false removes the class. + * - No value will toggle the fluid class. + * + * @return {boolean|undefined} + * - The value of fluid when getting. + * - `undefined` when setting. + */ + + + Player.prototype.fluid = function fluid(bool) { + if (bool === undefined) { + return !!this.fluid_; + } + + this.fluid_ = !!bool; + + if (bool) { + this.addClass('vjs-fluid'); + } else { + this.removeClass('vjs-fluid'); + } + + this.updateStyleEl_(); + }; + + /** + * Get/Set the aspect ratio + * + * @param {string} [ratio] + * Aspect ratio for player + * + * @return {string|undefined} + * returns the current aspect ratio when getting + */ + + /** + * A getter/setter for the `Player`'s aspect ratio. + * + * @param {string} [ratio] + * The value to set the `Player's aspect ratio to. + * + * @return {string|undefined} + * - The current aspect ratio of the `Player` when getting. + * - undefined when setting + */ + + + Player.prototype.aspectRatio = function aspectRatio(ratio) { + if (ratio === undefined) { + return this.aspectRatio_; + } + + // Check for width:height format + if (!/^\d+\:\d+$/.test(ratio)) { + throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.'); + } + this.aspectRatio_ = ratio; + + // We're assuming if you set an aspect ratio you want fluid mode, + // because in fixed mode you could calculate width and height yourself. + this.fluid(true); + + this.updateStyleEl_(); + }; + + /** + * Update styles of the `Player` element (height, width and aspect ratio). + * + * @private + * @listens Tech#loadedmetadata + */ + + + Player.prototype.updateStyleEl_ = function updateStyleEl_() { + if (window_1.VIDEOJS_NO_DYNAMIC_STYLE === true) { + var _width = typeof this.width_ === 'number' ? this.width_ : this.options_.width; + var _height = typeof this.height_ === 'number' ? this.height_ : this.options_.height; + var techEl = this.tech_ && this.tech_.el(); + + if (techEl) { + if (_width >= 0) { + techEl.width = _width; + } + if (_height >= 0) { + techEl.height = _height; + } + } + + return; + } + + var width = void 0; + var height = void 0; + var aspectRatio = void 0; + var idClass = void 0; + + // The aspect ratio is either used directly or to calculate width and height. + if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') { + // Use any aspectRatio that's been specifically set + aspectRatio = this.aspectRatio_; + } else if (this.videoWidth() > 0) { + // Otherwise try to get the aspect ratio from the video metadata + aspectRatio = this.videoWidth() + ':' + this.videoHeight(); + } else { + // Or use a default. The video element's is 2:1, but 16:9 is more common. + aspectRatio = '16:9'; + } + + // Get the ratio as a decimal we can use to calculate dimensions + var ratioParts = aspectRatio.split(':'); + var ratioMultiplier = ratioParts[1] / ratioParts[0]; + + if (this.width_ !== undefined) { + // Use any width that's been specifically set + width = this.width_; + } else if (this.height_ !== undefined) { + // Or calulate the width from the aspect ratio if a height has been set + width = this.height_ / ratioMultiplier; + } else { + // Or use the video's metadata, or use the video el's default of 300 + width = this.videoWidth() || 300; + } + + if (this.height_ !== undefined) { + // Use any height that's been specifically set + height = this.height_; + } else { + // Otherwise calculate the height from the ratio and the width + height = width * ratioMultiplier; + } + + // Ensure the CSS class is valid by starting with an alpha character + if (/^[^a-zA-Z]/.test(this.id())) { + idClass = 'dimensions-' + this.id(); + } else { + idClass = this.id() + '-dimensions'; + } + + // Ensure the right class is still on the player for the style element + this.addClass(idClass); + + setTextContent(this.styleEl_, '\n .' + idClass + ' {\n width: ' + width + 'px;\n height: ' + height + 'px;\n }\n\n .' + idClass + '.vjs-fluid {\n padding-top: ' + ratioMultiplier * 100 + '%;\n }\n '); + }; + + /** + * Load/Create an instance of playback {@link Tech} including element + * and API methods. Then append the `Tech` element in `Player` as a child. + * + * @param {string} techName + * name of the playback technology + * + * @param {string} source + * video source + * + * @private + */ + + + Player.prototype.loadTech_ = function loadTech_(techName, source) { + var _this2 = this; + + // Pause and remove current playback technology + if (this.tech_) { + this.unloadTech_(); + } + + var titleTechName = toTitleCase(techName); + var camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1); + + // get rid of the HTML5 video tag as soon as we are using another tech + if (titleTechName !== 'Html5' && this.tag) { + Tech.getTech('Html5').disposeMediaElement(this.tag); + this.tag.player = null; + this.tag = null; + } + + this.techName_ = titleTechName; + + // Turn off API access because we're loading a new tech that might load asynchronously + this.isReady_ = false; + + // if autoplay is a string we pass false to the tech + // because the player is going to handle autoplay on `loadstart` + var autoplay = typeof this.autoplay() === 'string' ? false : this.autoplay(); + + // Grab tech-specific options from player options and add source and parent element to use. + var techOptions = { + source: source, + autoplay: autoplay, + 'nativeControlsForTouch': this.options_.nativeControlsForTouch, + 'playerId': this.id(), + 'techId': this.id() + '_' + camelTechName + '_api', + 'playsinline': this.options_.playsinline, + 'preload': this.options_.preload, + 'loop': this.options_.loop, + 'muted': this.options_.muted, + 'poster': this.poster(), + 'language': this.language(), + 'playerElIngest': this.playerElIngest_ || false, + 'vtt.js': this.options_['vtt.js'], + 'canOverridePoster': !!this.options_.techCanOverridePoster, + 'enableSourceset': this.options_.enableSourceset + }; + + ALL.names.forEach(function (name$$1) { + var props = ALL[name$$1]; + + techOptions[props.getterName] = _this2[props.privateName]; + }); + + assign(techOptions, this.options_[titleTechName]); + assign(techOptions, this.options_[camelTechName]); + assign(techOptions, this.options_[techName.toLowerCase()]); + + if (this.tag) { + techOptions.tag = this.tag; + } + + if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) { + techOptions.startTime = this.cache_.currentTime; + } + + // Initialize tech instance + var TechClass = Tech.getTech(techName); + + if (!TechClass) { + throw new Error('No Tech named \'' + titleTechName + '\' exists! \'' + titleTechName + '\' should be registered using videojs.registerTech()\''); + } + + this.tech_ = new TechClass(techOptions); + + // player.triggerReady is always async, so don't need this to be async + this.tech_.ready(bind(this, this.handleTechReady_), true); + + textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_); + + // Listen to all HTML5-defined events and trigger them on the player + TECH_EVENTS_RETRIGGER.forEach(function (event) { + _this2.on(_this2.tech_, event, _this2['handleTech' + toTitleCase(event) + '_']); + }); + + Object.keys(TECH_EVENTS_QUEUE).forEach(function (event) { + _this2.on(_this2.tech_, event, function (eventObj) { + if (_this2.tech_.playbackRate() === 0 && _this2.tech_.seeking()) { + _this2.queuedCallbacks_.push({ + callback: _this2['handleTech' + TECH_EVENTS_QUEUE[event] + '_'].bind(_this2), + event: eventObj + }); + return; + } + _this2['handleTech' + TECH_EVENTS_QUEUE[event] + '_'](eventObj); + }); + }); + + this.on(this.tech_, 'loadstart', this.handleTechLoadStart_); + this.on(this.tech_, 'sourceset', this.handleTechSourceset_); + this.on(this.tech_, 'waiting', this.handleTechWaiting_); + this.on(this.tech_, 'ended', this.handleTechEnded_); + this.on(this.tech_, 'seeking', this.handleTechSeeking_); + this.on(this.tech_, 'play', this.handleTechPlay_); + this.on(this.tech_, 'firstplay', this.handleTechFirstPlay_); + this.on(this.tech_, 'pause', this.handleTechPause_); + this.on(this.tech_, 'durationchange', this.handleTechDurationChange_); + this.on(this.tech_, 'fullscreenchange', this.handleTechFullscreenChange_); + this.on(this.tech_, 'error', this.handleTechError_); + this.on(this.tech_, 'loadedmetadata', this.updateStyleEl_); + this.on(this.tech_, 'posterchange', this.handleTechPosterChange_); + this.on(this.tech_, 'textdata', this.handleTechTextData_); + this.on(this.tech_, 'ratechange', this.handleTechRateChange_); + + this.usingNativeControls(this.techGet_('controls')); + + if (this.controls() && !this.usingNativeControls()) { + this.addTechControlsListeners_(); + } + + // Add the tech element in the DOM if it was not already there + // Make sure to not insert the original video element if using Html5 + if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) { + prependTo(this.tech_.el(), this.el()); + } + + // Get rid of the original video tag reference after the first tech is loaded + if (this.tag) { + this.tag.player = null; + this.tag = null; + } + }; + + /** + * Unload and dispose of the current playback {@link Tech}. + * + * @private + */ + + + Player.prototype.unloadTech_ = function unloadTech_() { + var _this3 = this; + + // Save the current text tracks so that we can reuse the same text tracks with the next tech + ALL.names.forEach(function (name$$1) { + var props = ALL[name$$1]; + + _this3[props.privateName] = _this3[props.getterName](); + }); + this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_); + + this.isReady_ = false; + + this.tech_.dispose(); + + this.tech_ = false; + + if (this.isPosterFromTech_) { + this.poster_ = ''; + this.trigger('posterchange'); + } + + this.isPosterFromTech_ = false; + }; + + /** + * Return a reference to the current {@link Tech}. + * It will print a warning by default about the danger of using the tech directly + * but any argument that is passed in will silence the warning. + * + * @param {*} [safety] + * Anything passed in to silence the warning + * + * @return {Tech} + * The Tech + */ + + + Player.prototype.tech = function tech(safety) { + if (safety === undefined) { + log$1.warn(tsml(_templateObject$2)); + } + + return this.tech_; + }; + + /** + * Set up click and touch listeners for the playback element + * + * - On desktops: a click on the video itself will toggle playback + * - On mobile devices: a click on the video toggles controls + * which is done by toggling the user state between active and + * inactive + * - A tap can signal that a user has become active or has become inactive + * e.g. a quick tap on an iPhone movie should reveal the controls. Another + * quick tap should hide them again (signaling the user is in an inactive + * viewing state) + * - In addition to this, we still want the user to be considered inactive after + * a few seconds of inactivity. + * + * > Note: the only part of iOS interaction we can't mimic with this setup + * is a touch and hold on the video element counting as activity in order to + * keep the controls showing, but that shouldn't be an issue. A touch and hold + * on any controls will still keep the user active + * + * @private + */ + + + Player.prototype.addTechControlsListeners_ = function addTechControlsListeners_() { + // Make sure to remove all the previous listeners in case we are called multiple times. + this.removeTechControlsListeners_(); + + // Some browsers (Chrome & IE) don't trigger a click on a flash swf, but do + // trigger mousedown/up. + // http://stackoverflow.com/questions/1444562/javascript-onclick-event-over-flash-object + // Any touch events are set to block the mousedown event from happening + this.on(this.tech_, 'mousedown', this.handleTechClick_); + this.on(this.tech_, 'dblclick', this.handleTechDoubleClick_); + + // If the controls were hidden we don't want that to change without a tap event + // so we'll check if the controls were already showing before reporting user + // activity + this.on(this.tech_, 'touchstart', this.handleTechTouchStart_); + this.on(this.tech_, 'touchmove', this.handleTechTouchMove_); + this.on(this.tech_, 'touchend', this.handleTechTouchEnd_); + + // The tap listener needs to come after the touchend listener because the tap + // listener cancels out any reportedUserActivity when setting userActive(false) + this.on(this.tech_, 'tap', this.handleTechTap_); + }; + + /** + * Remove the listeners used for click and tap controls. This is needed for + * toggling to controls disabled, where a tap/touch should do nothing. + * + * @private + */ + + + Player.prototype.removeTechControlsListeners_ = function removeTechControlsListeners_() { + // We don't want to just use `this.off()` because there might be other needed + // listeners added by techs that extend this. + this.off(this.tech_, 'tap', this.handleTechTap_); + this.off(this.tech_, 'touchstart', this.handleTechTouchStart_); + this.off(this.tech_, 'touchmove', this.handleTechTouchMove_); + this.off(this.tech_, 'touchend', this.handleTechTouchEnd_); + this.off(this.tech_, 'mousedown', this.handleTechClick_); + this.off(this.tech_, 'dblclick', this.handleTechDoubleClick_); + }; + + /** + * Player waits for the tech to be ready + * + * @private + */ + + + Player.prototype.handleTechReady_ = function handleTechReady_() { + this.triggerReady(); + + // Keep the same volume as before + if (this.cache_.volume) { + this.techCall_('setVolume', this.cache_.volume); + } + + // Look if the tech found a higher resolution poster while loading + this.handleTechPosterChange_(); + + // Update the duration if available + this.handleTechDurationChange_(); + }; + + /** + * Retrigger the `loadstart` event that was triggered by the {@link Tech}. This + * function will also trigger {@link Player#firstplay} if it is the first loadstart + * for a video. + * + * @fires Player#loadstart + * @fires Player#firstplay + * @listens Tech#loadstart + * @private + */ + + + Player.prototype.handleTechLoadStart_ = function handleTechLoadStart_() { + // TODO: Update to use `emptied` event instead. See #1277. + + this.removeClass('vjs-ended'); + this.removeClass('vjs-seeking'); + + // reset the error state + this.error(null); + + // If it's already playing we want to trigger a firstplay event now. + // The firstplay event relies on both the play and loadstart events + // which can happen in any order for a new source + if (!this.paused()) { + /** + * Fired when the user agent begins looking for media data + * + * @event Player#loadstart + * @type {EventTarget~Event} + */ + this.trigger('loadstart'); + this.trigger('firstplay'); + } else { + // reset the hasStarted state + this.hasStarted(false); + this.trigger('loadstart'); + } + + // autoplay happens after loadstart for the browser, + // so we mimic that behavior + this.manualAutoplay_(this.autoplay()); + }; + + /** + * Handle autoplay string values, rather than the typical boolean + * values that should be handled by the tech. Note that this is not + * part of any specification. Valid values and what they do can be + * found on the autoplay getter at Player#autoplay() + */ + + + Player.prototype.manualAutoplay_ = function manualAutoplay_(type) { + var _this4 = this; + + if (!this.tech_ || typeof type !== 'string') { + return; + } + + var muted = function muted() { + var previouslyMuted = _this4.muted(); + + _this4.muted(true); + + var playPromise = _this4.play(); + + if (!playPromise || !playPromise.then || !playPromise.catch) { + return; + } + + return playPromise.catch(function (e) { + // restore old value of muted on failure + _this4.muted(previouslyMuted); + }); + }; + + var promise = void 0; + + if (type === 'any') { + promise = this.play(); + + if (promise && promise.then && promise.catch) { + promise.catch(function () { + return muted(); + }); + } + } else if (type === 'muted') { + promise = muted(); + } else { + promise = this.play(); + } + + if (!promise || !promise.then || !promise.catch) { + return; + } + + return promise.then(function () { + _this4.trigger({ type: 'autoplay-success', autoplay: type }); + }).catch(function (e) { + _this4.trigger({ type: 'autoplay-failure', autoplay: type }); + }); + }; + + /** + * Update the internal source caches so that we return the correct source from + * `src()`, `currentSource()`, and `currentSources()`. + * + * > Note: `currentSources` will not be updated if the source that is passed in exists + * in the current `currentSources` cache. + * + * + * @param {Tech~SourceObject} srcObj + * A string or object source to update our caches to. + */ + + + Player.prototype.updateSourceCaches_ = function updateSourceCaches_() { + var srcObj = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ''; + + + var src = srcObj; + var type = ''; + + if (typeof src !== 'string') { + src = srcObj.src; + type = srcObj.type; + } + + // if we are a blob url, don't update the source cache + // blob urls can arise when playback is done via Media Source Extension (MSE) + // such as m3u8 sources with @videojs/http-streaming (VHS) + if (/^blob:/.test(src)) { + return; + } + + // make sure all the caches are set to default values + // to prevent null checking + this.cache_.source = this.cache_.source || {}; + this.cache_.sources = this.cache_.sources || []; + + // try to get the type of the src that was passed in + if (src && !type) { + type = findMimetype(this, src); + } + + // update `currentSource` cache always + this.cache_.source = mergeOptions({}, srcObj, { src: src, type: type }); + + var matchingSources = this.cache_.sources.filter(function (s) { + return s.src && s.src === src; + }); + var sourceElSources = []; + var sourceEls = this.$$('source'); + var matchingSourceEls = []; + + for (var i = 0; i < sourceEls.length; i++) { + var sourceObj = getAttributes(sourceEls[i]); + + sourceElSources.push(sourceObj); + + if (sourceObj.src && sourceObj.src === src) { + matchingSourceEls.push(sourceObj.src); + } + } + + // if we have matching source els but not matching sources + // the current source cache is not up to date + if (matchingSourceEls.length && !matchingSources.length) { + this.cache_.sources = sourceElSources; + // if we don't have matching source or source els set the + // sources cache to the `currentSource` cache + } else if (!matchingSources.length) { + this.cache_.sources = [this.cache_.source]; + } + + // update the tech `src` cache + this.cache_.src = src; + }; + + /** + * *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech} + * causing the media element to reload. + * + * It will fire for the initial source and each subsequent source. + * This event is a custom event from Video.js and is triggered by the {@link Tech}. + * + * The event object for this event contains a `src` property that will contain the source + * that was available when the event was triggered. This is generally only necessary if Video.js + * is switching techs while the source was being changed. + * + * It is also fired when `load` is called on the player (or media element) + * because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`} + * says that the resource selection algorithm needs to be aborted and restarted. + * In this case, it is very likely that the `src` property will be set to the + * empty string `""` to indicate we do not know what the source will be but + * that it is changing. + * + * *This event is currently still experimental and may change in minor releases.* + * __To use this, pass `enableSourceset` option to the player.__ + * + * @event Player#sourceset + * @type {EventTarget~Event} + * @prop {string} src + * The source url available when the `sourceset` was triggered. + * It will be an empty string if we cannot know what the source is + * but know that the source will change. + */ + /** + * Retrigger the `sourceset` event that was triggered by the {@link Tech}. + * + * @fires Player#sourceset + * @listens Tech#sourceset + * @private + */ + + + Player.prototype.handleTechSourceset_ = function handleTechSourceset_(event) { + var _this5 = this; + + // only update the source cache when the source + // was not updated using the player api + if (!this.changingSrc_) { + // update the source to the intial source right away + // in some cases this will be empty string + this.updateSourceCaches_(event.src); + + // if the `sourceset` `src` was an empty string + // wait for a `loadstart` to update the cache to `currentSrc`. + // If a sourceset happens before a `loadstart`, we reset the state + // as this function will be called again. + if (!event.src) { + var updateCache = function updateCache(e) { + if (e.type !== 'sourceset') { + _this5.updateSourceCaches_(_this5.techGet_('currentSrc')); + } + + _this5.tech_.off(['sourceset', 'loadstart'], updateCache); + }; + + this.tech_.one(['sourceset', 'loadstart'], updateCache); + } + } + + this.trigger({ + src: event.src, + type: 'sourceset' + }); + }; + + /** + * Add/remove the vjs-has-started class + * + * @fires Player#firstplay + * + * @param {boolean} request + * - true: adds the class + * - false: remove the class + * + * @return {boolean} + * the boolean value of hasStarted_ + */ + + + Player.prototype.hasStarted = function hasStarted(request) { + if (request === undefined) { + // act as getter, if we have no request to change + return this.hasStarted_; + } + + if (request === this.hasStarted_) { + return; + } + + this.hasStarted_ = request; + + if (this.hasStarted_) { + this.addClass('vjs-has-started'); + this.trigger('firstplay'); + } else { + this.removeClass('vjs-has-started'); + } + }; + + /** + * Fired whenever the media begins or resumes playback + * + * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play} + * @fires Player#play + * @listens Tech#play + * @private + */ + + + Player.prototype.handleTechPlay_ = function handleTechPlay_() { + this.removeClass('vjs-ended'); + this.removeClass('vjs-paused'); + this.addClass('vjs-playing'); + + // hide the poster when the user hits play + this.hasStarted(true); + /** + * Triggered whenever an {@link Tech#play} event happens. Indicates that + * playback has started or resumed. + * + * @event Player#play + * @type {EventTarget~Event} + */ + this.trigger('play'); + }; + + /** + * Retrigger the `ratechange` event that was triggered by the {@link Tech}. + * + * If there were any events queued while the playback rate was zero, fire + * those events now. + * + * @private + * @method Player#handleTechRateChange_ + * @fires Player#ratechange + * @listens Tech#ratechange + */ + + + Player.prototype.handleTechRateChange_ = function handleTechRateChange_() { + if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) { + this.queuedCallbacks_.forEach(function (queued) { + return queued.callback(queued.event); + }); + this.queuedCallbacks_ = []; + } + this.cache_.lastPlaybackRate = this.tech_.playbackRate(); + /** + * Fires when the playing speed of the audio/video is changed + * + * @event Player#ratechange + * @type {event} + */ + this.trigger('ratechange'); + }; + + /** + * Retrigger the `waiting` event that was triggered by the {@link Tech}. + * + * @fires Player#waiting + * @listens Tech#waiting + * @private + */ + + + Player.prototype.handleTechWaiting_ = function handleTechWaiting_() { + var _this6 = this; + + this.addClass('vjs-waiting'); + /** + * A readyState change on the DOM element has caused playback to stop. + * + * @event Player#waiting + * @type {EventTarget~Event} + */ + this.trigger('waiting'); + this.one('timeupdate', function () { + return _this6.removeClass('vjs-waiting'); + }); + }; + + /** + * Retrigger the `canplay` event that was triggered by the {@link Tech}. + * > Note: This is not consistent between browsers. See #1351 + * + * @fires Player#canplay + * @listens Tech#canplay + * @private + */ + + + Player.prototype.handleTechCanPlay_ = function handleTechCanPlay_() { + this.removeClass('vjs-waiting'); + /** + * The media has a readyState of HAVE_FUTURE_DATA or greater. + * + * @event Player#canplay + * @type {EventTarget~Event} + */ + this.trigger('canplay'); + }; + + /** + * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}. + * + * @fires Player#canplaythrough + * @listens Tech#canplaythrough + * @private + */ + + + Player.prototype.handleTechCanPlayThrough_ = function handleTechCanPlayThrough_() { + this.removeClass('vjs-waiting'); + /** + * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the + * entire media file can be played without buffering. + * + * @event Player#canplaythrough + * @type {EventTarget~Event} + */ + this.trigger('canplaythrough'); + }; + + /** + * Retrigger the `playing` event that was triggered by the {@link Tech}. + * + * @fires Player#playing + * @listens Tech#playing + * @private + */ + + + Player.prototype.handleTechPlaying_ = function handleTechPlaying_() { + this.removeClass('vjs-waiting'); + /** + * The media is no longer blocked from playback, and has started playing. + * + * @event Player#playing + * @type {EventTarget~Event} + */ + this.trigger('playing'); + }; + + /** + * Retrigger the `seeking` event that was triggered by the {@link Tech}. + * + * @fires Player#seeking + * @listens Tech#seeking + * @private + */ + + + Player.prototype.handleTechSeeking_ = function handleTechSeeking_() { + this.addClass('vjs-seeking'); + /** + * Fired whenever the player is jumping to a new time + * + * @event Player#seeking + * @type {EventTarget~Event} + */ + this.trigger('seeking'); + }; + + /** + * Retrigger the `seeked` event that was triggered by the {@link Tech}. + * + * @fires Player#seeked + * @listens Tech#seeked + * @private + */ + + + Player.prototype.handleTechSeeked_ = function handleTechSeeked_() { + this.removeClass('vjs-seeking'); + /** + * Fired when the player has finished jumping to a new time + * + * @event Player#seeked + * @type {EventTarget~Event} + */ + this.trigger('seeked'); + }; + + /** + * Retrigger the `firstplay` event that was triggered by the {@link Tech}. + * + * @fires Player#firstplay + * @listens Tech#firstplay + * @deprecated As of 6.0 firstplay event is deprecated. + * As of 6.0 passing the `starttime` option to the player and the firstplay event are deprecated. + * @private + */ + + + Player.prototype.handleTechFirstPlay_ = function handleTechFirstPlay_() { + // If the first starttime attribute is specified + // then we will start at the given offset in seconds + if (this.options_.starttime) { + log$1.warn('Passing the `starttime` option to the player will be deprecated in 6.0'); + this.currentTime(this.options_.starttime); + } + + this.addClass('vjs-has-started'); + /** + * Fired the first time a video is played. Not part of the HLS spec, and this is + * probably not the best implementation yet, so use sparingly. If you don't have a + * reason to prevent playback, use `myPlayer.one('play');` instead. + * + * @event Player#firstplay + * @deprecated As of 6.0 firstplay event is deprecated. + * @type {EventTarget~Event} + */ + this.trigger('firstplay'); + }; + + /** + * Retrigger the `pause` event that was triggered by the {@link Tech}. + * + * @fires Player#pause + * @listens Tech#pause + * @private + */ + + + Player.prototype.handleTechPause_ = function handleTechPause_() { + this.removeClass('vjs-playing'); + this.addClass('vjs-paused'); + /** + * Fired whenever the media has been paused + * + * @event Player#pause + * @type {EventTarget~Event} + */ + this.trigger('pause'); + }; + + /** + * Retrigger the `ended` event that was triggered by the {@link Tech}. + * + * @fires Player#ended + * @listens Tech#ended + * @private + */ + + + Player.prototype.handleTechEnded_ = function handleTechEnded_() { + this.addClass('vjs-ended'); + if (this.options_.loop) { + this.currentTime(0); + this.play(); + } else if (!this.paused()) { + this.pause(); + } + + /** + * Fired when the end of the media resource is reached (currentTime == duration) + * + * @event Player#ended + * @type {EventTarget~Event} + */ + this.trigger('ended'); + }; + + /** + * Fired when the duration of the media resource is first known or changed + * + * @listens Tech#durationchange + * @private + */ + + + Player.prototype.handleTechDurationChange_ = function handleTechDurationChange_() { + this.duration(this.techGet_('duration')); + }; + + /** + * Handle a click on the media element to play/pause + * + * @param {EventTarget~Event} event + * the event that caused this function to trigger + * + * @listens Tech#mousedown + * @private + */ + + + Player.prototype.handleTechClick_ = function handleTechClick_(event) { + if (!isSingleLeftClick(event)) { + return; + } + + // When controls are disabled a click should not toggle playback because + // the click is considered a control + if (!this.controls_) { + return; + } + + if (this.paused()) { + silencePromise(this.play()); + } else { + this.pause(); + } + }; + + /** + * Handle a double-click on the media element to enter/exit fullscreen + * + * @param {EventTarget~Event} event + * the event that caused this function to trigger + * + * @listens Tech#dblclick + * @private + */ + + + Player.prototype.handleTechDoubleClick_ = function handleTechDoubleClick_(event) { + if (!this.controls_) { + return; + } + + // we do not want to toggle fullscreen state + // when double-clicking inside a control bar or a modal + var inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), function (el) { + return el.contains(event.target); + }); + + if (!inAllowedEls) { + if (this.isFullscreen()) { + this.exitFullscreen(); + } else { + this.requestFullscreen(); + } + } + }; + + /** + * Handle a tap on the media element. It will toggle the user + * activity state, which hides and shows the controls. + * + * @listens Tech#tap + * @private + */ + + + Player.prototype.handleTechTap_ = function handleTechTap_() { + this.userActive(!this.userActive()); + }; + + /** + * Handle touch to start + * + * @listens Tech#touchstart + * @private + */ + + + Player.prototype.handleTechTouchStart_ = function handleTechTouchStart_() { + this.userWasActive = this.userActive(); + }; + + /** + * Handle touch to move + * + * @listens Tech#touchmove + * @private + */ + + + Player.prototype.handleTechTouchMove_ = function handleTechTouchMove_() { + if (this.userWasActive) { + this.reportUserActivity(); + } + }; + + /** + * Handle touch to end + * + * @param {EventTarget~Event} event + * the touchend event that triggered + * this function + * + * @listens Tech#touchend + * @private + */ + + + Player.prototype.handleTechTouchEnd_ = function handleTechTouchEnd_(event) { + // Stop the mouse events from also happening + event.preventDefault(); + }; + + /** + * Fired when the player switches in or out of fullscreen mode + * + * @private + * @listens Player#fullscreenchange + */ + + + Player.prototype.handleFullscreenChange_ = function handleFullscreenChange_() { + if (this.isFullscreen()) { + this.addClass('vjs-fullscreen'); + } else { + this.removeClass('vjs-fullscreen'); + } + }; + + /** + * native click events on the SWF aren't triggered on IE11, Win8.1RT + * use stageclick events triggered from inside the SWF instead + * + * @private + * @listens stageclick + */ + + + Player.prototype.handleStageClick_ = function handleStageClick_() { + this.reportUserActivity(); + }; + + /** + * Handle Tech Fullscreen Change + * + * @param {EventTarget~Event} event + * the fullscreenchange event that triggered this function + * + * @param {Object} data + * the data that was sent with the event + * + * @private + * @listens Tech#fullscreenchange + * @fires Player#fullscreenchange + */ + + + Player.prototype.handleTechFullscreenChange_ = function handleTechFullscreenChange_(event, data) { + if (data) { + this.isFullscreen(data.isFullscreen); + } + /** + * Fired when going in and out of fullscreen. + * + * @event Player#fullscreenchange + * @type {EventTarget~Event} + */ + this.trigger('fullscreenchange'); + }; + + /** + * Fires when an error occurred during the loading of an audio/video. + * + * @private + * @listens Tech#error + */ + + + Player.prototype.handleTechError_ = function handleTechError_() { + var error = this.tech_.error(); + + this.error(error); + }; + + /** + * Retrigger the `textdata` event that was triggered by the {@link Tech}. + * + * @fires Player#textdata + * @listens Tech#textdata + * @private + */ + + + Player.prototype.handleTechTextData_ = function handleTechTextData_() { + var data = null; + + if (arguments.length > 1) { + data = arguments[1]; + } + + /** + * Fires when we get a textdata event from tech + * + * @event Player#textdata + * @type {EventTarget~Event} + */ + this.trigger('textdata', data); + }; + + /** + * Get object for cached values. + * + * @return {Object} + * get the current object cache + */ + + + Player.prototype.getCache = function getCache() { + return this.cache_; + }; + + /** + * Pass values to the playback tech + * + * @param {string} [method] + * the method to call + * + * @param {Object} arg + * the argument to pass + * + * @private + */ + + + Player.prototype.techCall_ = function techCall_(method, arg) { + // If it's not ready yet, call method when it is + + this.ready(function () { + if (method in allowedSetters) { + return set$1(this.middleware_, this.tech_, method, arg); + } else if (method in allowedMediators) { + return mediate(this.middleware_, this.tech_, method, arg); + } + + try { + if (this.tech_) { + this.tech_[method](arg); + } + } catch (e) { + log$1(e); + throw e; + } + }, true); + }; + + /** + * Get calls can't wait for the tech, and sometimes don't need to. + * + * @param {string} method + * Tech method + * + * @return {Function|undefined} + * the method or undefined + * + * @private + */ + + + Player.prototype.techGet_ = function techGet_(method) { + if (!this.tech_ || !this.tech_.isReady_) { + return; + } + + if (method in allowedGetters) { + return get$1(this.middleware_, this.tech_, method); + } else if (method in allowedMediators) { + return mediate(this.middleware_, this.tech_, method); + } + + // Flash likes to die and reload when you hide or reposition it. + // In these cases the object methods go away and we get errors. + // When that happens we'll catch the errors and inform tech that it's not ready any more. + try { + return this.tech_[method](); + } catch (e) { + + // When building additional tech libs, an expected method may not be defined yet + if (this.tech_[method] === undefined) { + log$1('Video.js: ' + method + ' method not defined for ' + this.techName_ + ' playback technology.', e); + throw e; + } + + // When a method isn't available on the object it throws a TypeError + if (e.name === 'TypeError') { + log$1('Video.js: ' + method + ' unavailable on ' + this.techName_ + ' playback technology element.', e); + this.tech_.isReady_ = false; + throw e; + } + + // If error unknown, just log and throw + log$1(e); + throw e; + } + }; + + /** + * Attempt to begin playback at the first opportunity. + * + * @return {Promise|undefined} + * Returns a promise if the browser supports Promises (or one + * was passed in as an option). This promise will be resolved on + * the return value of play. If this is undefined it will fulfill the + * promise chain otherwise the promise chain will be fulfilled when + * the promise from play is fulfilled. + */ + + + Player.prototype.play = function play() { + var _this7 = this; + + var PromiseClass = this.options_.Promise || window_1.Promise; + + if (PromiseClass) { + return new PromiseClass(function (resolve) { + _this7.play_(resolve); + }); + } + + return this.play_(); + }; + + /** + * The actual logic for play, takes a callback that will be resolved on the + * return value of play. This allows us to resolve to the play promise if there + * is one on modern browsers. + * + * @private + * @param {Function} [callback] + * The callback that should be called when the techs play is actually called + */ + + + Player.prototype.play_ = function play_() { + var _this8 = this; + + var callback = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : silencePromise; + + // If this is called while we have a play queued up on a loadstart, remove + // that listener to avoid getting in a potentially bad state. + if (this.playOnLoadstart_) { + this.off('loadstart', this.playOnLoadstart_); + } + + // If the player/tech is not ready, queue up another call to `play()` for + // when it is. This will loop back into this method for another attempt at + // playback when the tech is ready. + if (!this.isReady_) { + + // Bail out if we're already waiting for `ready`! + if (this.playWaitingForReady_) { + return; + } + + this.playWaitingForReady_ = true; + this.ready(function () { + _this8.playWaitingForReady_ = false; + callback(_this8.play()); + }); + + // If the player/tech is ready and we have a source, we can attempt playback. + } else if (!this.changingSrc_ && (this.src() || this.currentSrc())) { + callback(this.techGet_('play')); + return; + + // If the tech is ready, but we do not have a source, we'll need to wait + // for both the `ready` and a `loadstart` when the source is finally + // resolved by middleware and set on the player. + // + // This can happen if `play()` is called while changing sources or before + // one has been set on the player. + } else { + + this.playOnLoadstart_ = function () { + _this8.playOnLoadstart_ = null; + callback(_this8.play()); + }; + + this.one('loadstart', this.playOnLoadstart_); + } + }; + + /** + * Pause the video playback + * + * @return {Player} + * A reference to the player object this function was called on + */ + + + Player.prototype.pause = function pause() { + this.techCall_('pause'); + }; + + /** + * Check if the player is paused or has yet to play + * + * @return {boolean} + * - false: if the media is currently playing + * - true: if media is not currently playing + */ + + + Player.prototype.paused = function paused() { + // The initial state of paused should be true (in Safari it's actually false) + return this.techGet_('paused') === false ? false : true; + }; + + /** + * Get a TimeRange object representing the current ranges of time that the user + * has played. + * + * @return {TimeRange} + * A time range object that represents all the increments of time that have + * been played. + */ + + + Player.prototype.played = function played() { + return this.techGet_('played') || createTimeRanges(0, 0); + }; + + /** + * Returns whether or not the user is "scrubbing". Scrubbing is + * when the user has clicked the progress bar handle and is + * dragging it along the progress bar. + * + * @param {boolean} [isScrubbing] + * whether the user is or is not scrubbing + * + * @return {boolean} + * The value of scrubbing when getting + */ + + + Player.prototype.scrubbing = function scrubbing(isScrubbing) { + if (typeof isScrubbing === 'undefined') { + return this.scrubbing_; + } + this.scrubbing_ = !!isScrubbing; + + if (isScrubbing) { + this.addClass('vjs-scrubbing'); + } else { + this.removeClass('vjs-scrubbing'); + } + }; + + /** + * Get or set the current time (in seconds) + * + * @param {number|string} [seconds] + * The time to seek to in seconds + * + * @return {number} + * - the current time in seconds when getting + */ + + + Player.prototype.currentTime = function currentTime(seconds) { + if (typeof seconds !== 'undefined') { + if (seconds < 0) { + seconds = 0; + } + this.techCall_('setCurrentTime', seconds); + return; + } + + // cache last currentTime and return. default to 0 seconds + // + // Caching the currentTime is meant to prevent a massive amount of reads on the tech's + // currentTime when scrubbing, but may not provide much performance benefit afterall. + // Should be tested. Also something has to read the actual current time or the cache will + // never get updated. + this.cache_.currentTime = this.techGet_('currentTime') || 0; + return this.cache_.currentTime; + }; + + /** + * Normally gets the length in time of the video in seconds; + * in all but the rarest use cases an argument will NOT be passed to the method + * + * > **NOTE**: The video must have started loading before the duration can be + * known, and in the case of Flash, may not be known until the video starts + * playing. + * + * @fires Player#durationchange + * + * @param {number} [seconds] + * The duration of the video to set in seconds + * + * @return {number} + * - The duration of the video in seconds when getting + */ + + + Player.prototype.duration = function duration(seconds) { + if (seconds === undefined) { + // return NaN if the duration is not known + return this.cache_.duration !== undefined ? this.cache_.duration : NaN; + } + + seconds = parseFloat(seconds); + + // Standardize on Infinity for signaling video is live + if (seconds < 0) { + seconds = Infinity; + } + + if (seconds !== this.cache_.duration) { + // Cache the last set value for optimized scrubbing (esp. Flash) + this.cache_.duration = seconds; + + if (seconds === Infinity) { + this.addClass('vjs-live'); + } else { + this.removeClass('vjs-live'); + } + /** + * @event Player#durationchange + * @type {EventTarget~Event} + */ + this.trigger('durationchange'); + } + }; + + /** + * Calculates how much time is left in the video. Not part + * of the native video API. + * + * @return {number} + * The time remaining in seconds + */ + + + Player.prototype.remainingTime = function remainingTime() { + return this.duration() - this.currentTime(); + }; + + /** + * A remaining time function that is intented to be used when + * the time is to be displayed directly to the user. + * + * @return {number} + * The rounded time remaining in seconds + */ + + + Player.prototype.remainingTimeDisplay = function remainingTimeDisplay() { + return Math.floor(this.duration()) - Math.floor(this.currentTime()); + }; + + // + // Kind of like an array of portions of the video that have been downloaded. + + /** + * Get a TimeRange object with an array of the times of the video + * that have been downloaded. If you just want the percent of the + * video that's been downloaded, use bufferedPercent. + * + * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered} + * + * @return {TimeRange} + * A mock TimeRange object (following HTML spec) + */ + + + Player.prototype.buffered = function buffered() { + var buffered = this.techGet_('buffered'); + + if (!buffered || !buffered.length) { + buffered = createTimeRanges(0, 0); + } + + return buffered; + }; + + /** + * Get the percent (as a decimal) of the video that's been downloaded. + * This method is not a part of the native HTML video API. + * + * @return {number} + * A decimal between 0 and 1 representing the percent + * that is buffered 0 being 0% and 1 being 100% + */ + + + Player.prototype.bufferedPercent = function bufferedPercent$$1() { + return bufferedPercent(this.buffered(), this.duration()); + }; + + /** + * Get the ending time of the last buffered time range + * This is used in the progress bar to encapsulate all time ranges. + * + * @return {number} + * The end of the last buffered time range + */ + + + Player.prototype.bufferedEnd = function bufferedEnd() { + var buffered = this.buffered(); + var duration = this.duration(); + var end = buffered.end(buffered.length - 1); + + if (end > duration) { + end = duration; + } + + return end; + }; + + /** + * Get or set the current volume of the media + * + * @param {number} [percentAsDecimal] + * The new volume as a decimal percent: + * - 0 is muted/0%/off + * - 1.0 is 100%/full + * - 0.5 is half volume or 50% + * + * @return {number} + * The current volume as a percent when getting + */ + + + Player.prototype.volume = function volume(percentAsDecimal) { + var vol = void 0; + + if (percentAsDecimal !== undefined) { + // Force value to between 0 and 1 + vol = Math.max(0, Math.min(1, parseFloat(percentAsDecimal))); + this.cache_.volume = vol; + this.techCall_('setVolume', vol); + + if (vol > 0) { + this.lastVolume_(vol); + } + + return; + } + + // Default to 1 when returning current volume. + vol = parseFloat(this.techGet_('volume')); + return isNaN(vol) ? 1 : vol; + }; + + /** + * Get the current muted state, or turn mute on or off + * + * @param {boolean} [muted] + * - true to mute + * - false to unmute + * + * @return {boolean} + * - true if mute is on and getting + * - false if mute is off and getting + */ + + + Player.prototype.muted = function muted(_muted) { + if (_muted !== undefined) { + this.techCall_('setMuted', _muted); + return; + } + return this.techGet_('muted') || false; + }; + + /** + * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted + * indicates the state of muted on initial playback. + * + * ```js + * var myPlayer = videojs('some-player-id'); + * + * myPlayer.src("http://www.example.com/path/to/video.mp4"); + * + * // get, should be false + * console.log(myPlayer.defaultMuted()); + * // set to true + * myPlayer.defaultMuted(true); + * // get should be true + * console.log(myPlayer.defaultMuted()); + * ``` + * + * @param {boolean} [defaultMuted] + * - true to mute + * - false to unmute + * + * @return {boolean|Player} + * - true if defaultMuted is on and getting + * - false if defaultMuted is off and getting + * - A reference to the current player when setting + */ + + + Player.prototype.defaultMuted = function defaultMuted(_defaultMuted) { + if (_defaultMuted !== undefined) { + return this.techCall_('setDefaultMuted', _defaultMuted); + } + return this.techGet_('defaultMuted') || false; + }; + + /** + * Get the last volume, or set it + * + * @param {number} [percentAsDecimal] + * The new last volume as a decimal percent: + * - 0 is muted/0%/off + * - 1.0 is 100%/full + * - 0.5 is half volume or 50% + * + * @return {number} + * the current value of lastVolume as a percent when getting + * + * @private + */ + + + Player.prototype.lastVolume_ = function lastVolume_(percentAsDecimal) { + if (percentAsDecimal !== undefined && percentAsDecimal !== 0) { + this.cache_.lastVolume = percentAsDecimal; + return; + } + return this.cache_.lastVolume; + }; + + /** + * Check if current tech can support native fullscreen + * (e.g. with built in controls like iOS, so not our flash swf) + * + * @return {boolean} + * if native fullscreen is supported + */ + + + Player.prototype.supportsFullScreen = function supportsFullScreen() { + return this.techGet_('supportsFullScreen') || false; + }; + + /** + * Check if the player is in fullscreen mode or tell the player that it + * is or is not in fullscreen mode. + * + * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official + * property and instead document.fullscreenElement is used. But isFullscreen is + * still a valuable property for internal player workings. + * + * @param {boolean} [isFS] + * Set the players current fullscreen state + * + * @return {boolean} + * - true if fullscreen is on and getting + * - false if fullscreen is off and getting + */ + + + Player.prototype.isFullscreen = function isFullscreen(isFS) { + if (isFS !== undefined) { + this.isFullscreen_ = !!isFS; + return; + } + return !!this.isFullscreen_; + }; + + /** + * Increase the size of the video to full screen + * In some browsers, full screen is not supported natively, so it enters + * "full window mode", where the video fills the browser window. + * In browsers and devices that support native full screen, sometimes the + * browser's default controls will be shown, and not the Video.js custom skin. + * This includes most mobile devices (iOS, Android) and older versions of + * Safari. + * + * @fires Player#fullscreenchange + */ + + + Player.prototype.requestFullscreen = function requestFullscreen() { + var fsApi = FullscreenApi; + + this.isFullscreen(true); + + if (fsApi.requestFullscreen) { + // the browser supports going fullscreen at the element level so we can + // take the controls fullscreen as well as the video + + // Trigger fullscreenchange event after change + // We have to specifically add this each time, and remove + // when canceling fullscreen. Otherwise if there's multiple + // players on a page, they would all be reacting to the same fullscreen + // events + on(document_1, fsApi.fullscreenchange, bind(this, function documentFullscreenChange(e) { + this.isFullscreen(document_1[fsApi.fullscreenElement]); + + // If cancelling fullscreen, remove event listener. + if (this.isFullscreen() === false) { + off(document_1, fsApi.fullscreenchange, documentFullscreenChange); + } + /** + * @event Player#fullscreenchange + * @type {EventTarget~Event} + */ + this.trigger('fullscreenchange'); + })); + + this.el_[fsApi.requestFullscreen](); + } else if (this.tech_.supportsFullScreen()) { + // we can't take the video.js controls fullscreen but we can go fullscreen + // with native controls + this.techCall_('enterFullScreen'); + } else { + // fullscreen isn't supported so we'll just stretch the video element to + // fill the viewport + this.enterFullWindow(); + /** + * @event Player#fullscreenchange + * @type {EventTarget~Event} + */ + this.trigger('fullscreenchange'); + } + }; + + /** + * Return the video to its normal size after having been in full screen mode + * + * @fires Player#fullscreenchange + */ + + + Player.prototype.exitFullscreen = function exitFullscreen() { + var fsApi = FullscreenApi; + + this.isFullscreen(false); + + // Check for browser element fullscreen support + if (fsApi.requestFullscreen) { + document_1[fsApi.exitFullscreen](); + } else if (this.tech_.supportsFullScreen()) { + this.techCall_('exitFullScreen'); + } else { + this.exitFullWindow(); + /** + * @event Player#fullscreenchange + * @type {EventTarget~Event} + */ + this.trigger('fullscreenchange'); + } + }; + + /** + * When fullscreen isn't supported we can stretch the + * video container to as wide as the browser will let us. + * + * @fires Player#enterFullWindow + */ + + + Player.prototype.enterFullWindow = function enterFullWindow() { + this.isFullWindow = true; + + // Storing original doc overflow value to return to when fullscreen is off + this.docOrigOverflow = document_1.documentElement.style.overflow; + + // Add listener for esc key to exit fullscreen + on(document_1, 'keydown', bind(this, this.fullWindowOnEscKey)); + + // Hide any scroll bars + document_1.documentElement.style.overflow = 'hidden'; + + // Apply fullscreen styles + addClass(document_1.body, 'vjs-full-window'); + + /** + * @event Player#enterFullWindow + * @type {EventTarget~Event} + */ + this.trigger('enterFullWindow'); + }; + + /** + * Check for call to either exit full window or + * full screen on ESC key + * + * @param {string} event + * Event to check for key press + */ + + + Player.prototype.fullWindowOnEscKey = function fullWindowOnEscKey(event) { + if (event.keyCode === 27) { + if (this.isFullscreen() === true) { + this.exitFullscreen(); + } else { + this.exitFullWindow(); + } + } + }; + + /** + * Exit full window + * + * @fires Player#exitFullWindow + */ + + + Player.prototype.exitFullWindow = function exitFullWindow() { + this.isFullWindow = false; + off(document_1, 'keydown', this.fullWindowOnEscKey); + + // Unhide scroll bars. + document_1.documentElement.style.overflow = this.docOrigOverflow; + + // Remove fullscreen styles + removeClass(document_1.body, 'vjs-full-window'); + + // Resize the box, controller, and poster to original sizes + // this.positionAll(); + /** + * @event Player#exitFullWindow + * @type {EventTarget~Event} + */ + this.trigger('exitFullWindow'); + }; + + /** + * Check whether the player can play a given mimetype + * + * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype + * + * @param {string} type + * The mimetype to check + * + * @return {string} + * 'probably', 'maybe', or '' (empty string) + */ + + + Player.prototype.canPlayType = function canPlayType(type) { + var can = void 0; + + // Loop through each playback technology in the options order + for (var i = 0, j = this.options_.techOrder; i < j.length; i++) { + var techName = j[i]; + var tech = Tech.getTech(techName); + + // Support old behavior of techs being registered as components. + // Remove once that deprecated behavior is removed. + if (!tech) { + tech = Component.getComponent(techName); + } + + // Check if the current tech is defined before continuing + if (!tech) { + log$1.error('The "' + techName + '" tech is undefined. Skipped browser support check for that tech.'); + continue; + } + + // Check if the browser supports this technology + if (tech.isSupported()) { + can = tech.canPlayType(type); + + if (can) { + return can; + } + } + } + + return ''; + }; + + /** + * Select source based on tech-order or source-order + * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise, + * defaults to tech-order selection + * + * @param {Array} sources + * The sources for a media asset + * + * @return {Object|boolean} + * Object of source and tech order or false + */ + + + Player.prototype.selectSource = function selectSource(sources) { + var _this9 = this; + + // Get only the techs specified in `techOrder` that exist and are supported by the + // current platform + var techs = this.options_.techOrder.map(function (techName) { + return [techName, Tech.getTech(techName)]; + }).filter(function (_ref) { + var techName = _ref[0], + tech = _ref[1]; + + // Check if the current tech is defined before continuing + if (tech) { + // Check if the browser supports this technology + return tech.isSupported(); + } + + log$1.error('The "' + techName + '" tech is undefined. Skipped browser support check for that tech.'); + return false; + }); + + // Iterate over each `innerArray` element once per `outerArray` element and execute + // `tester` with both. If `tester` returns a non-falsy value, exit early and return + // that value. + var findFirstPassingTechSourcePair = function findFirstPassingTechSourcePair(outerArray, innerArray, tester) { + var found = void 0; + + outerArray.some(function (outerChoice) { + return innerArray.some(function (innerChoice) { + found = tester(outerChoice, innerChoice); + + if (found) { + return true; + } + }); + }); + + return found; + }; + + var foundSourceAndTech = void 0; + var flip = function flip(fn) { + return function (a, b) { + return fn(b, a); + }; + }; + var finder = function finder(_ref2, source) { + var techName = _ref2[0], + tech = _ref2[1]; + + if (tech.canPlaySource(source, _this9.options_[techName.toLowerCase()])) { + return { source: source, tech: techName }; + } + }; + + // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources + // to select from them based on their priority. + if (this.options_.sourceOrder) { + // Source-first ordering + foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder)); + } else { + // Tech-first ordering + foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder); + } + + return foundSourceAndTech || false; + }; + + /** + * Get or set the video source. + * + * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source] + * A SourceObject, an array of SourceObjects, or a string referencing + * a URL to a media source. It is _highly recommended_ that an object + * or array of objects is used here, so that source selection + * algorithms can take the `type` into account. + * + * If not provided, this method acts as a getter. + * + * @return {string|undefined} + * If the `source` argument is missing, returns the current source + * URL. Otherwise, returns nothing/undefined. + */ + + + Player.prototype.src = function src(source) { + var _this10 = this; + + // getter usage + if (typeof source === 'undefined') { + return this.cache_.src || ''; + } + // filter out invalid sources and turn our source into + // an array of source objects + var sources = filterSource(source); + + // if a source was passed in then it is invalid because + // it was filtered to a zero length Array. So we have to + // show an error + if (!sources.length) { + this.setTimeout(function () { + this.error({ code: 4, message: this.localize(this.options_.notSupportedMessage) }); + }, 0); + return; + } + + // intial sources + this.changingSrc_ = true; + + this.cache_.sources = sources; + this.updateSourceCaches_(sources[0]); + + // middlewareSource is the source after it has been changed by middleware + setSource(this, sources[0], function (middlewareSource, mws) { + _this10.middleware_ = mws; + + // since sourceSet is async we have to update the cache again after we select a source since + // the source that is selected could be out of order from the cache update above this callback. + _this10.cache_.sources = sources; + _this10.updateSourceCaches_(middlewareSource); + + var err = _this10.src_(middlewareSource); + + if (err) { + if (sources.length > 1) { + return _this10.src(sources.slice(1)); + } + + _this10.changingSrc_ = false; + + // We need to wrap this in a timeout to give folks a chance to add error event handlers + _this10.setTimeout(function () { + this.error({ code: 4, message: this.localize(this.options_.notSupportedMessage) }); + }, 0); + + // we could not find an appropriate tech, but let's still notify the delegate that this is it + // this needs a better comment about why this is needed + _this10.triggerReady(); + + return; + } + + setTech(mws, _this10.tech_); + }); + }; + + /** + * Set the source object on the tech, returns a boolean that indicates whether + * there is a tech that can play the source or not + * + * @param {Tech~SourceObject} source + * The source object to set on the Tech + * + * @return {Boolean} + * - True if there is no Tech to playback this source + * - False otherwise + * + * @private + */ + + + Player.prototype.src_ = function src_(source) { + var _this11 = this; + + var sourceTech = this.selectSource([source]); + + if (!sourceTech) { + return true; + } + + if (!titleCaseEquals(sourceTech.tech, this.techName_)) { + this.changingSrc_ = true; + // load this technology with the chosen source + this.loadTech_(sourceTech.tech, sourceTech.source); + this.tech_.ready(function () { + _this11.changingSrc_ = false; + }); + return false; + } + + // wait until the tech is ready to set the source + // and set it synchronously if possible (#2326) + this.ready(function () { + + // The setSource tech method was added with source handlers + // so older techs won't support it + // We need to check the direct prototype for the case where subclasses + // of the tech do not support source handlers + if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) { + this.techCall_('setSource', source); + } else { + this.techCall_('src', source.src); + } + + this.changingSrc_ = false; + }, true); + + return false; + }; + + /** + * Begin loading the src data. + */ + + + Player.prototype.load = function load() { + this.techCall_('load'); + }; + + /** + * Reset the player. Loads the first tech in the techOrder, + * and calls `reset` on the tech`. + */ + + + Player.prototype.reset = function reset() { + if (this.tech_) { + this.tech_.clearTracks('text'); + } + this.loadTech_(this.options_.techOrder[0], null); + this.techCall_('reset'); + }; + + /** + * Returns all of the current source objects. + * + * @return {Tech~SourceObject[]} + * The current source objects + */ + + + Player.prototype.currentSources = function currentSources() { + var source = this.currentSource(); + var sources = []; + + // assume `{}` or `{ src }` + if (Object.keys(source).length !== 0) { + sources.push(source); + } + + return this.cache_.sources || sources; + }; + + /** + * Returns the current source object. + * + * @return {Tech~SourceObject} + * The current source object + */ + + + Player.prototype.currentSource = function currentSource() { + return this.cache_.source || {}; + }; + + /** + * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4 + * Can be used in conjunction with `currentType` to assist in rebuilding the current source object. + * + * @return {string} + * The current source + */ + + + Player.prototype.currentSrc = function currentSrc() { + return this.currentSource() && this.currentSource().src || ''; + }; + + /** + * Get the current source type e.g. video/mp4 + * This can allow you rebuild the current source object so that you could load the same + * source and tech later + * + * @return {string} + * The source MIME type + */ + + + Player.prototype.currentType = function currentType() { + return this.currentSource() && this.currentSource().type || ''; + }; + + /** + * Get or set the preload attribute + * + * @param {boolean} [value] + * - true means that we should preload + * - false means that we should not preload + * + * @return {string} + * The preload attribute value when getting + */ + + + Player.prototype.preload = function preload(value) { + if (value !== undefined) { + this.techCall_('setPreload', value); + this.options_.preload = value; + return; + } + return this.techGet_('preload'); + }; + + /** + * Get or set the autoplay option. When this is a boolean it will + * modify the attribute on the tech. When this is a string the attribute on + * the tech will be removed and `Player` will handle autoplay on loadstarts. + * + * @param {boolean|string} [value] + * - true: autoplay using the browser behavior + * - false: do not autoplay + * - 'play': call play() on every loadstart + * - 'muted': call muted() then play() on every loadstart + * - 'any': call play() on every loadstart. if that fails call muted() then play(). + * - *: values other than those listed here will be set `autoplay` to true + * + * @return {boolean|string} + * The current value of autoplay when getting + */ + + + Player.prototype.autoplay = function autoplay(value) { + // getter usage + if (value === undefined) { + return this.options_.autoplay || false; + } + + var techAutoplay = void 0; + + // if the value is a valid string set it to that + if (typeof value === 'string' && /(any|play|muted)/.test(value)) { + this.options_.autoplay = value; + this.manualAutoplay_(value); + techAutoplay = false; + + // any falsy value sets autoplay to false in the browser, + // lets do the same + } else if (!value) { + this.options_.autoplay = false; + + // any other value (ie truthy) sets autoplay to true + } else { + this.options_.autoplay = true; + } + + techAutoplay = techAutoplay || this.options_.autoplay; + + // if we don't have a tech then we do not queue up + // a setAutoplay call on tech ready. We do this because the + // autoplay option will be passed in the constructor and we + // do not need to set it twice + if (this.tech_) { + this.techCall_('setAutoplay', techAutoplay); + } + }; + + /** + * Set or unset the playsinline attribute. + * Playsinline tells the browser that non-fullscreen playback is preferred. + * + * @param {boolean} [value] + * - true means that we should try to play inline by default + * - false means that we should use the browser's default playback mode, + * which in most cases is inline. iOS Safari is a notable exception + * and plays fullscreen by default. + * + * @return {string|Player} + * - the current value of playsinline + * - the player when setting + * + * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline} + */ + + + Player.prototype.playsinline = function playsinline(value) { + if (value !== undefined) { + this.techCall_('setPlaysinline', value); + this.options_.playsinline = value; + return this; + } + return this.techGet_('playsinline'); + }; + + /** + * Get or set the loop attribute on the video element. + * + * @param {boolean} [value] + * - true means that we should loop the video + * - false means that we should not loop the video + * + * @return {string} + * The current value of loop when getting + */ + + + Player.prototype.loop = function loop(value) { + if (value !== undefined) { + this.techCall_('setLoop', value); + this.options_.loop = value; + return; + } + return this.techGet_('loop'); + }; + + /** + * Get or set the poster image source url + * + * @fires Player#posterchange + * + * @param {string} [src] + * Poster image source URL + * + * @return {string} + * The current value of poster when getting + */ + + + Player.prototype.poster = function poster(src) { + if (src === undefined) { + return this.poster_; + } + + // The correct way to remove a poster is to set as an empty string + // other falsey values will throw errors + if (!src) { + src = ''; + } + + if (src === this.poster_) { + return; + } + + // update the internal poster variable + this.poster_ = src; + + // update the tech's poster + this.techCall_('setPoster', src); + + this.isPosterFromTech_ = false; + + // alert components that the poster has been set + /** + * This event fires when the poster image is changed on the player. + * + * @event Player#posterchange + * @type {EventTarget~Event} + */ + this.trigger('posterchange'); + }; + + /** + * Some techs (e.g. YouTube) can provide a poster source in an + * asynchronous way. We want the poster component to use this + * poster source so that it covers up the tech's controls. + * (YouTube's play button). However we only want to use this + * source if the player user hasn't set a poster through + * the normal APIs. + * + * @fires Player#posterchange + * @listens Tech#posterchange + * @private + */ + + + Player.prototype.handleTechPosterChange_ = function handleTechPosterChange_() { + if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) { + var newPoster = this.tech_.poster() || ''; + + if (newPoster !== this.poster_) { + this.poster_ = newPoster; + this.isPosterFromTech_ = true; + + // Let components know the poster has changed + this.trigger('posterchange'); + } + } + }; + + /** + * Get or set whether or not the controls are showing. + * + * @fires Player#controlsenabled + * + * @param {boolean} [bool] + * - true to turn controls on + * - false to turn controls off + * + * @return {boolean} + * The current value of controls when getting + */ + + + Player.prototype.controls = function controls(bool) { + if (bool === undefined) { + return !!this.controls_; + } + + bool = !!bool; + + // Don't trigger a change event unless it actually changed + if (this.controls_ === bool) { + return; + } + + this.controls_ = bool; + + if (this.usingNativeControls()) { + this.techCall_('setControls', bool); + } + + if (this.controls_) { + this.removeClass('vjs-controls-disabled'); + this.addClass('vjs-controls-enabled'); + /** + * @event Player#controlsenabled + * @type {EventTarget~Event} + */ + this.trigger('controlsenabled'); + if (!this.usingNativeControls()) { + this.addTechControlsListeners_(); + } + } else { + this.removeClass('vjs-controls-enabled'); + this.addClass('vjs-controls-disabled'); + /** + * @event Player#controlsdisabled + * @type {EventTarget~Event} + */ + this.trigger('controlsdisabled'); + if (!this.usingNativeControls()) { + this.removeTechControlsListeners_(); + } + } + }; + + /** + * Toggle native controls on/off. Native controls are the controls built into + * devices (e.g. default iPhone controls), Flash, or other techs + * (e.g. Vimeo Controls) + * **This should only be set by the current tech, because only the tech knows + * if it can support native controls** + * + * @fires Player#usingnativecontrols + * @fires Player#usingcustomcontrols + * + * @param {boolean} [bool] + * - true to turn native controls on + * - false to turn native controls off + * + * @return {boolean} + * The current value of native controls when getting + */ + + + Player.prototype.usingNativeControls = function usingNativeControls(bool) { + if (bool === undefined) { + return !!this.usingNativeControls_; + } + + bool = !!bool; + + // Don't trigger a change event unless it actually changed + if (this.usingNativeControls_ === bool) { + return; + } + + this.usingNativeControls_ = bool; + + if (this.usingNativeControls_) { + this.addClass('vjs-using-native-controls'); + + /** + * player is using the native device controls + * + * @event Player#usingnativecontrols + * @type {EventTarget~Event} + */ + this.trigger('usingnativecontrols'); + } else { + this.removeClass('vjs-using-native-controls'); + + /** + * player is using the custom HTML controls + * + * @event Player#usingcustomcontrols + * @type {EventTarget~Event} + */ + this.trigger('usingcustomcontrols'); + } + }; + + /** + * Set or get the current MediaError + * + * @fires Player#error + * + * @param {MediaError|string|number} [err] + * A MediaError or a string/number to be turned + * into a MediaError + * + * @return {MediaError|null} + * The current MediaError when getting (or null) + */ + + + Player.prototype.error = function error(err) { + if (err === undefined) { + return this.error_ || null; + } + + // restoring to default + if (err === null) { + this.error_ = err; + this.removeClass('vjs-error'); + if (this.errorDisplay) { + this.errorDisplay.close(); + } + return; + } + + this.error_ = new MediaError(err); + + // add the vjs-error classname to the player + this.addClass('vjs-error'); + + // log the name of the error type and any message + // IE11 logs "[object object]" and required you to expand message to see error object + log$1.error('(CODE:' + this.error_.code + ' ' + MediaError.errorTypes[this.error_.code] + ')', this.error_.message, this.error_); + + /** + * @event Player#error + * @type {EventTarget~Event} + */ + this.trigger('error'); + + return; + }; + + /** + * Report user activity + * + * @param {Object} event + * Event object + */ + + + Player.prototype.reportUserActivity = function reportUserActivity(event) { + this.userActivity_ = true; + }; + + /** + * Get/set if user is active + * + * @fires Player#useractive + * @fires Player#userinactive + * + * @param {boolean} [bool] + * - true if the user is active + * - false if the user is inactive + * + * @return {boolean} + * The current value of userActive when getting + */ + + + Player.prototype.userActive = function userActive(bool) { + if (bool === undefined) { + return this.userActive_; + } + + bool = !!bool; + + if (bool === this.userActive_) { + return; + } + + this.userActive_ = bool; + + if (this.userActive_) { + this.userActivity_ = true; + this.removeClass('vjs-user-inactive'); + this.addClass('vjs-user-active'); + /** + * @event Player#useractive + * @type {EventTarget~Event} + */ + this.trigger('useractive'); + return; + } + + // Chrome/Safari/IE have bugs where when you change the cursor it can + // trigger a mousemove event. This causes an issue when you're hiding + // the cursor when the user is inactive, and a mousemove signals user + // activity. Making it impossible to go into inactive mode. Specifically + // this happens in fullscreen when we really need to hide the cursor. + // + // When this gets resolved in ALL browsers it can be removed + // https://code.google.com/p/chromium/issues/detail?id=103041 + if (this.tech_) { + this.tech_.one('mousemove', function (e) { + e.stopPropagation(); + e.preventDefault(); + }); + } + + this.userActivity_ = false; + this.removeClass('vjs-user-active'); + this.addClass('vjs-user-inactive'); + /** + * @event Player#userinactive + * @type {EventTarget~Event} + */ + this.trigger('userinactive'); + }; + + /** + * Listen for user activity based on timeout value + * + * @private + */ + + + Player.prototype.listenForUserActivity_ = function listenForUserActivity_() { + var mouseInProgress = void 0; + var lastMoveX = void 0; + var lastMoveY = void 0; + var handleActivity = bind(this, this.reportUserActivity); + + var handleMouseMove = function handleMouseMove(e) { + // #1068 - Prevent mousemove spamming + // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970 + if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) { + lastMoveX = e.screenX; + lastMoveY = e.screenY; + handleActivity(); + } + }; + + var handleMouseDown = function handleMouseDown() { + handleActivity(); + // For as long as the they are touching the device or have their mouse down, + // we consider them active even if they're not moving their finger or mouse. + // So we want to continue to update that they are active + this.clearInterval(mouseInProgress); + // Setting userActivity=true now and setting the interval to the same time + // as the activityCheck interval (250) should ensure we never miss the + // next activityCheck + mouseInProgress = this.setInterval(handleActivity, 250); + }; + + var handleMouseUp = function handleMouseUp(event) { + handleActivity(); + // Stop the interval that maintains activity if the mouse/touch is down + this.clearInterval(mouseInProgress); + }; + + // Any mouse movement will be considered user activity + this.on('mousedown', handleMouseDown); + this.on('mousemove', handleMouseMove); + this.on('mouseup', handleMouseUp); + + // Listen for keyboard navigation + // Shouldn't need to use inProgress interval because of key repeat + this.on('keydown', handleActivity); + this.on('keyup', handleActivity); + + // Run an interval every 250 milliseconds instead of stuffing everything into + // the mousemove/touchmove function itself, to prevent performance degradation. + // `this.reportUserActivity` simply sets this.userActivity_ to true, which + // then gets picked up by this loop + // http://ejohn.org/blog/learning-from-twitter/ + var inactivityTimeout = void 0; + + this.setInterval(function () { + // Check to see if mouse/touch activity has happened + if (!this.userActivity_) { + return; + } + + // Reset the activity tracker + this.userActivity_ = false; + + // If the user state was inactive, set the state to active + this.userActive(true); + + // Clear any existing inactivity timeout to start the timer over + this.clearTimeout(inactivityTimeout); + + var timeout = this.options_.inactivityTimeout; + + if (timeout <= 0) { + return; + } + + // In <timeout> milliseconds, if no more activity has occurred the + // user will be considered inactive + inactivityTimeout = this.setTimeout(function () { + // Protect against the case where the inactivityTimeout can trigger just + // before the next user activity is picked up by the activity check loop + // causing a flicker + if (!this.userActivity_) { + this.userActive(false); + } + }, timeout); + }, 250); + }; + + /** + * Gets or sets the current playback rate. A playback rate of + * 1.0 represents normal speed and 0.5 would indicate half-speed + * playback, for instance. + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate + * + * @param {number} [rate] + * New playback rate to set. + * + * @return {number} + * The current playback rate when getting or 1.0 + */ + + + Player.prototype.playbackRate = function playbackRate(rate) { + if (rate !== undefined) { + // NOTE: this.cache_.lastPlaybackRate is set from the tech handler + // that is registered above + this.techCall_('setPlaybackRate', rate); + return; + } + + if (this.tech_ && this.tech_.featuresPlaybackRate) { + return this.cache_.lastPlaybackRate || this.techGet_('playbackRate'); + } + return 1.0; + }; + + /** + * Gets or sets the current default playback rate. A default playback rate of + * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance. + * defaultPlaybackRate will only represent what the initial playbackRate of a video was, not + * not the current playbackRate. + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate + * + * @param {number} [rate] + * New default playback rate to set. + * + * @return {number|Player} + * - The default playback rate when getting or 1.0 + * - the player when setting + */ + + + Player.prototype.defaultPlaybackRate = function defaultPlaybackRate(rate) { + if (rate !== undefined) { + return this.techCall_('setDefaultPlaybackRate', rate); + } + + if (this.tech_ && this.tech_.featuresPlaybackRate) { + return this.techGet_('defaultPlaybackRate'); + } + return 1.0; + }; + + /** + * Gets or sets the audio flag + * + * @param {boolean} bool + * - true signals that this is an audio player + * - false signals that this is not an audio player + * + * @return {boolean} + * The current value of isAudio when getting + */ + + + Player.prototype.isAudio = function isAudio(bool) { + if (bool !== undefined) { + this.isAudio_ = !!bool; + return; + } + + return !!this.isAudio_; + }; + + /** + * A helper method for adding a {@link TextTrack} to our + * {@link TextTrackList}. + * + * In addition to the W3C settings we allow adding additional info through options. + * + * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack + * + * @param {string} [kind] + * the kind of TextTrack you are adding + * + * @param {string} [label] + * the label to give the TextTrack label + * + * @param {string} [language] + * the language to set on the TextTrack + * + * @return {TextTrack|undefined} + * the TextTrack that was added or undefined + * if there is no tech + */ + + + Player.prototype.addTextTrack = function addTextTrack(kind, label, language) { + if (this.tech_) { + return this.tech_.addTextTrack(kind, label, language); + } + }; + + /** + * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}. It will + * automatically removed from the video element whenever the source changes, unless + * manualCleanup is set to false. + * + * @param {Object} options + * Options to pass to {@link HTMLTrackElement} during creation. See + * {@link HTMLTrackElement} for object properties that you should use. + * + * @param {boolean} [manualCleanup=true] if set to false, the TextTrack will be + * + * @return {HtmlTrackElement} + * the HTMLTrackElement that was created and added + * to the HtmlTrackElementList and the remote + * TextTrackList + * + * @deprecated The default value of the "manualCleanup" parameter will default + * to "false" in upcoming versions of Video.js + */ + + + Player.prototype.addRemoteTextTrack = function addRemoteTextTrack(options, manualCleanup) { + if (this.tech_) { + return this.tech_.addRemoteTextTrack(options, manualCleanup); + } + }; + + /** + * Remove a remote {@link TextTrack} from the respective + * {@link TextTrackList} and {@link HtmlTrackElementList}. + * + * @param {Object} track + * Remote {@link TextTrack} to remove + * + * @return {undefined} + * does not return anything + */ + + + Player.prototype.removeRemoteTextTrack = function removeRemoteTextTrack() { + var _ref3 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}, + _ref3$track = _ref3.track, + track = _ref3$track === undefined ? arguments[0] : _ref3$track; + + // destructure the input into an object with a track argument, defaulting to arguments[0] + // default the whole argument to an empty object if nothing was passed in + + if (this.tech_) { + return this.tech_.removeRemoteTextTrack(track); + } + }; + + /** + * Gets available media playback quality metrics as specified by the W3C's Media + * Playback Quality API. + * + * @see [Spec]{@link https://wicg.github.io/media-playback-quality} + * + * @return {Object|undefined} + * An object with supported media playback quality metrics or undefined if there + * is no tech or the tech does not support it. + */ + + + Player.prototype.getVideoPlaybackQuality = function getVideoPlaybackQuality() { + return this.techGet_('getVideoPlaybackQuality'); + }; + + /** + * Get video width + * + * @return {number} + * current video width + */ + + + Player.prototype.videoWidth = function videoWidth() { + return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0; + }; + + /** + * Get video height + * + * @return {number} + * current video height + */ + + + Player.prototype.videoHeight = function videoHeight() { + return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0; + }; + + /** + * The player's language code + * NOTE: The language should be set in the player options if you want the + * the controls to be built with a specific language. Changing the language + * later will not update controls text. + * + * @param {string} [code] + * the language code to set the player to + * + * @return {string} + * The current language code when getting + */ + + + Player.prototype.language = function language(code) { + if (code === undefined) { + return this.language_; + } + + this.language_ = String(code).toLowerCase(); + }; + + /** + * Get the player's language dictionary + * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time + * Languages specified directly in the player options have precedence + * + * @return {Array} + * An array of of supported languages + */ + + + Player.prototype.languages = function languages() { + return mergeOptions(Player.prototype.options_.languages, this.languages_); + }; + + /** + * returns a JavaScript object reperesenting the current track + * information. **DOES not return it as JSON** + * + * @return {Object} + * Object representing the current of track info + */ + + + Player.prototype.toJSON = function toJSON() { + var options = mergeOptions(this.options_); + var tracks = options.tracks; + + options.tracks = []; + + for (var i = 0; i < tracks.length; i++) { + var track = tracks[i]; + + // deep merge tracks and null out player so no circular references + track = mergeOptions(track); + track.player = undefined; + options.tracks[i] = track; + } + + return options; + }; + + /** + * Creates a simple modal dialog (an instance of the {@link ModalDialog} + * component) that immediately overlays the player with arbitrary + * content and removes itself when closed. + * + * @param {string|Function|Element|Array|null} content + * Same as {@link ModalDialog#content}'s param of the same name. + * The most straight-forward usage is to provide a string or DOM + * element. + * + * @param {Object} [options] + * Extra options which will be passed on to the {@link ModalDialog}. + * + * @return {ModalDialog} + * the {@link ModalDialog} that was created + */ + + + Player.prototype.createModal = function createModal(content, options) { + var _this12 = this; + + options = options || {}; + options.content = content || ''; + + var modal = new ModalDialog(this, options); + + this.addChild(modal); + modal.on('dispose', function () { + _this12.removeChild(modal); + }); + + modal.open(); + return modal; + }; + + /** + * Gets tag settings + * + * @param {Element} tag + * The player tag + * + * @return {Object} + * An object containing all of the settings + * for a player tag + */ + + + Player.getTagSettings = function getTagSettings(tag) { + var baseOptions = { + sources: [], + tracks: [] + }; + + var tagOptions = getAttributes(tag); + var dataSetup = tagOptions['data-setup']; + + if (hasClass(tag, 'vjs-fluid')) { + tagOptions.fluid = true; + } + + // Check if data-setup attr exists. + if (dataSetup !== null) { + // Parse options JSON + // If empty string, make it a parsable json object. + var _safeParseTuple = tuple(dataSetup || '{}'), + err = _safeParseTuple[0], + data = _safeParseTuple[1]; + + if (err) { + log$1.error(err); + } + assign(tagOptions, data); + } + + assign(baseOptions, tagOptions); + + // Get tag children settings + if (tag.hasChildNodes()) { + var children = tag.childNodes; + + for (var i = 0, j = children.length; i < j; i++) { + var child = children[i]; + // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/ + var childName = child.nodeName.toLowerCase(); + + if (childName === 'source') { + baseOptions.sources.push(getAttributes(child)); + } else if (childName === 'track') { + baseOptions.tracks.push(getAttributes(child)); + } + } + } + + return baseOptions; + }; + + /** + * Determine whether or not flexbox is supported + * + * @return {boolean} + * - true if flexbox is supported + * - false if flexbox is not supported + */ + + + Player.prototype.flexNotSupported_ = function flexNotSupported_() { + var elem = document_1.createElement('i'); + + // Note: We don't actually use flexBasis (or flexOrder), but it's one of the more + // common flex features that we can rely on when checking for flex support. + return !('flexBasis' in elem.style || 'webkitFlexBasis' in elem.style || 'mozFlexBasis' in elem.style || 'msFlexBasis' in elem.style || + // IE10-specific (2012 flex spec), available for completeness + 'msFlexOrder' in elem.style); + }; + + return Player; + }(Component); + + /** + * Get the {@link VideoTrackList} + * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist + * + * @return {VideoTrackList} + * the current video track list + * + * @method Player.prototype.videoTracks + */ + + /** + * Get the {@link AudioTrackList} + * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist + * + * @return {AudioTrackList} + * the current audio track list + * + * @method Player.prototype.audioTracks + */ + + /** + * Get the {@link TextTrackList} + * + * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks + * + * @return {TextTrackList} + * the current text track list + * + * @method Player.prototype.textTracks + */ + + /** + * Get the remote {@link TextTrackList} + * + * @return {TextTrackList} + * The current remote text track list + * + * @method Player.prototype.remoteTextTracks + */ + + /** + * Get the remote {@link HtmlTrackElementList} tracks. + * + * @return {HtmlTrackElementList} + * The current remote text track element list + * + * @method Player.prototype.remoteTextTrackEls + */ + + ALL.names.forEach(function (name$$1) { + var props = ALL[name$$1]; + + Player.prototype[props.getterName] = function () { + if (this.tech_) { + return this.tech_[props.getterName](); + } + + // if we have not yet loadTech_, we create {video,audio,text}Tracks_ + // these will be passed to the tech during loading + this[props.privateName] = this[props.privateName] || new props.ListClass(); + return this[props.privateName]; + }; + }); + + /** + * Global player list + * + * @type {Object} + */ + Player.players = {}; + + var navigator = window_1.navigator; + + /* + * Player instance options, surfaced using options + * options = Player.prototype.options_ + * Make changes in options, not here. + * + * @type {Object} + * @private + */ + Player.prototype.options_ = { + // Default order of fallback technology + techOrder: Tech.defaultTechOrder_, + + html5: {}, + flash: {}, + + // default inactivity timeout + inactivityTimeout: 2000, + + // default playback rates + playbackRates: [], + // Add playback rate selection by adding rates + // 'playbackRates': [0.5, 1, 1.5, 2], + + // Included control sets + children: ['mediaLoader', 'posterImage', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'], + + language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en', + + // locales and their language translations + languages: {}, + + // Default message to show when a video cannot be played. + notSupportedMessage: 'No compatible source was found for this media.' + }; + + [ + /** + * Returns whether or not the player is in the "ended" state. + * + * @return {Boolean} True if the player is in the ended state, false if not. + * @method Player#ended + */ + 'ended', + /** + * Returns whether or not the player is in the "seeking" state. + * + * @return {Boolean} True if the player is in the seeking state, false if not. + * @method Player#seeking + */ + 'seeking', + /** + * Returns the TimeRanges of the media that are currently available + * for seeking to. + * + * @return {TimeRanges} the seekable intervals of the media timeline + * @method Player#seekable + */ + 'seekable', + /** + * Returns the current state of network activity for the element, from + * the codes in the list below. + * - NETWORK_EMPTY (numeric value 0) + * The element has not yet been initialised. All attributes are in + * their initial states. + * - NETWORK_IDLE (numeric value 1) + * The element's resource selection algorithm is active and has + * selected a resource, but it is not actually using the network at + * this time. + * - NETWORK_LOADING (numeric value 2) + * The user agent is actively trying to download data. + * - NETWORK_NO_SOURCE (numeric value 3) + * The element's resource selection algorithm is active, but it has + * not yet found a resource to use. + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states + * @return {number} the current network activity state + * @method Player#networkState + */ + 'networkState', + /** + * Returns a value that expresses the current state of the element + * with respect to rendering the current playback position, from the + * codes in the list below. + * - HAVE_NOTHING (numeric value 0) + * No information regarding the media resource is available. + * - HAVE_METADATA (numeric value 1) + * Enough of the resource has been obtained that the duration of the + * resource is available. + * - HAVE_CURRENT_DATA (numeric value 2) + * Data for the immediate current playback position is available. + * - HAVE_FUTURE_DATA (numeric value 3) + * Data for the immediate current playback position is available, as + * well as enough data for the user agent to advance the current + * playback position in the direction of playback. + * - HAVE_ENOUGH_DATA (numeric value 4) + * The user agent estimates that enough data is available for + * playback to proceed uninterrupted. + * + * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate + * @return {number} the current playback rendering state + * @method Player#readyState + */ + 'readyState'].forEach(function (fn) { + Player.prototype[fn] = function () { + return this.techGet_(fn); + }; + }); + + TECH_EVENTS_RETRIGGER.forEach(function (event) { + Player.prototype['handleTech' + toTitleCase(event) + '_'] = function () { + return this.trigger(event); + }; + }); + + /** + * Fired when the player has initial duration and dimension information + * + * @event Player#loadedmetadata + * @type {EventTarget~Event} + */ + + /** + * Fired when the player has downloaded data at the current playback position + * + * @event Player#loadeddata + * @type {EventTarget~Event} + */ + + /** + * Fired when the current playback position has changed * + * During playback this is fired every 15-250 milliseconds, depending on the + * playback technology in use. + * + * @event Player#timeupdate + * @type {EventTarget~Event} + */ + + /** + * Fired when the volume changes + * + * @event Player#volumechange + * @type {EventTarget~Event} + */ + + /** + * Reports whether or not a player has a plugin available. + * + * This does not report whether or not the plugin has ever been initialized + * on this player. For that, [usingPlugin]{@link Player#usingPlugin}. + * + * @method Player#hasPlugin + * @param {string} name + * The name of a plugin. + * + * @return {boolean} + * Whether or not this player has the requested plugin available. + */ + + /** + * Reports whether or not a player is using a plugin by name. + * + * For basic plugins, this only reports whether the plugin has _ever_ been + * initialized on this player. + * + * @method Player#usingPlugin + * @param {string} name + * The name of a plugin. + * + * @return {boolean} + * Whether or not this player is using the requested plugin. + */ + + Component.registerComponent('Player', Player); + + /** + * @file plugin.js + */ + + /** + * The base plugin name. + * + * @private + * @constant + * @type {string} + */ + var BASE_PLUGIN_NAME = 'plugin'; + + /** + * The key on which a player's active plugins cache is stored. + * + * @private + * @constant + * @type {string} + */ + var PLUGIN_CACHE_KEY = 'activePlugins_'; + + /** + * Stores registered plugins in a private space. + * + * @private + * @type {Object} + */ + var pluginStorage = {}; + + /** + * Reports whether or not a plugin has been registered. + * + * @private + * @param {string} name + * The name of a plugin. + * + * @returns {boolean} + * Whether or not the plugin has been registered. + */ + var pluginExists = function pluginExists(name) { + return pluginStorage.hasOwnProperty(name); + }; + + /** + * Get a single registered plugin by name. + * + * @private + * @param {string} name + * The name of a plugin. + * + * @returns {Function|undefined} + * The plugin (or undefined). + */ + var getPlugin = function getPlugin(name) { + return pluginExists(name) ? pluginStorage[name] : undefined; + }; + + /** + * Marks a plugin as "active" on a player. + * + * Also, ensures that the player has an object for tracking active plugins. + * + * @private + * @param {Player} player + * A Video.js player instance. + * + * @param {string} name + * The name of a plugin. + */ + var markPluginAsActive = function markPluginAsActive(player, name) { + player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {}; + player[PLUGIN_CACHE_KEY][name] = true; + }; + + /** + * Triggers a pair of plugin setup events. + * + * @private + * @param {Player} player + * A Video.js player instance. + * + * @param {Plugin~PluginEventHash} hash + * A plugin event hash. + * + * @param {Boolean} [before] + * If true, prefixes the event name with "before". In other words, + * use this to trigger "beforepluginsetup" instead of "pluginsetup". + */ + var triggerSetupEvent = function triggerSetupEvent(player, hash, before) { + var eventName = (before ? 'before' : '') + 'pluginsetup'; + + player.trigger(eventName, hash); + player.trigger(eventName + ':' + hash.name, hash); + }; + + /** + * Takes a basic plugin function and returns a wrapper function which marks + * on the player that the plugin has been activated. + * + * @private + * @param {string} name + * The name of the plugin. + * + * @param {Function} plugin + * The basic plugin. + * + * @returns {Function} + * A wrapper function for the given plugin. + */ + var createBasicPlugin = function createBasicPlugin(name, plugin) { + var basicPluginWrapper = function basicPluginWrapper() { + + // We trigger the "beforepluginsetup" and "pluginsetup" events on the player + // regardless, but we want the hash to be consistent with the hash provided + // for advanced plugins. + // + // The only potentially counter-intuitive thing here is the `instance` in + // the "pluginsetup" event is the value returned by the `plugin` function. + triggerSetupEvent(this, { name: name, plugin: plugin, instance: null }, true); + + var instance = plugin.apply(this, arguments); + + markPluginAsActive(this, name); + triggerSetupEvent(this, { name: name, plugin: plugin, instance: instance }); + + return instance; + }; + + Object.keys(plugin).forEach(function (prop) { + basicPluginWrapper[prop] = plugin[prop]; + }); + + return basicPluginWrapper; + }; + + /** + * Takes a plugin sub-class and returns a factory function for generating + * instances of it. + * + * This factory function will replace itself with an instance of the requested + * sub-class of Plugin. + * + * @private + * @param {string} name + * The name of the plugin. + * + * @param {Plugin} PluginSubClass + * The advanced plugin. + * + * @returns {Function} + */ + var createPluginFactory = function createPluginFactory(name, PluginSubClass) { + + // Add a `name` property to the plugin prototype so that each plugin can + // refer to itself by name. + PluginSubClass.prototype.name = name; + + return function () { + triggerSetupEvent(this, { name: name, plugin: PluginSubClass, instance: null }, true); + + for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + + var instance = new (Function.prototype.bind.apply(PluginSubClass, [null].concat([this].concat(args))))(); + + // The plugin is replaced by a function that returns the current instance. + this[name] = function () { + return instance; + }; + + triggerSetupEvent(this, instance.getEventHash()); + + return instance; + }; + }; + + /** + * Parent class for all advanced plugins. + * + * @mixes module:evented~EventedMixin + * @mixes module:stateful~StatefulMixin + * @fires Player#beforepluginsetup + * @fires Player#beforepluginsetup:$name + * @fires Player#pluginsetup + * @fires Player#pluginsetup:$name + * @listens Player#dispose + * @throws {Error} + * If attempting to instantiate the base {@link Plugin} class + * directly instead of via a sub-class. + */ + + var Plugin = function () { + + /** + * Creates an instance of this class. + * + * Sub-classes should call `super` to ensure plugins are properly initialized. + * + * @param {Player} player + * A Video.js player instance. + */ + function Plugin(player) { + classCallCheck(this, Plugin); + + if (this.constructor === Plugin) { + throw new Error('Plugin must be sub-classed; not directly instantiated.'); + } + + this.player = player; + + // Make this object evented, but remove the added `trigger` method so we + // use the prototype version instead. + evented(this); + delete this.trigger; + + stateful(this, this.constructor.defaultState); + markPluginAsActive(player, this.name); + + // Auto-bind the dispose method so we can use it as a listener and unbind + // it later easily. + this.dispose = bind(this, this.dispose); + + // If the player is disposed, dispose the plugin. + player.on('dispose', this.dispose); + } + + /** + * Get the version of the plugin that was set on <pluginName>.VERSION + */ + + + Plugin.prototype.version = function version() { + return this.constructor.VERSION; + }; + + /** + * Each event triggered by plugins includes a hash of additional data with + * conventional properties. + * + * This returns that object or mutates an existing hash. + * + * @param {Object} [hash={}] + * An object to be used as event an event hash. + * + * @returns {Plugin~PluginEventHash} + * An event hash object with provided properties mixed-in. + */ + + + Plugin.prototype.getEventHash = function getEventHash() { + var hash = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + + hash.name = this.name; + hash.plugin = this.constructor; + hash.instance = this; + return hash; + }; + + /** + * Triggers an event on the plugin object and overrides + * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}. + * + * @param {string|Object} event + * An event type or an object with a type property. + * + * @param {Object} [hash={}] + * Additional data hash to merge with a + * {@link Plugin~PluginEventHash|PluginEventHash}. + * + * @returns {boolean} + * Whether or not default was prevented. + */ + + + Plugin.prototype.trigger = function trigger$$1(event) { + var hash = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + return trigger(this.eventBusEl_, event, this.getEventHash(hash)); + }; + + /** + * Handles "statechanged" events on the plugin. No-op by default, override by + * subclassing. + * + * @abstract + * @param {Event} e + * An event object provided by a "statechanged" event. + * + * @param {Object} e.changes + * An object describing changes that occurred with the "statechanged" + * event. + */ + + + Plugin.prototype.handleStateChanged = function handleStateChanged(e) {}; + + /** + * Disposes a plugin. + * + * Subclasses can override this if they want, but for the sake of safety, + * it's probably best to subscribe the "dispose" event. + * + * @fires Plugin#dispose + */ + + + Plugin.prototype.dispose = function dispose() { + var name = this.name, + player = this.player; + + /** + * Signals that a advanced plugin is about to be disposed. + * + * @event Plugin#dispose + * @type {EventTarget~Event} + */ + + this.trigger('dispose'); + this.off(); + player.off('dispose', this.dispose); + + // Eliminate any possible sources of leaking memory by clearing up + // references between the player and the plugin instance and nulling out + // the plugin's state and replacing methods with a function that throws. + player[PLUGIN_CACHE_KEY][name] = false; + this.player = this.state = null; + + // Finally, replace the plugin name on the player with a new factory + // function, so that the plugin is ready to be set up again. + player[name] = createPluginFactory(name, pluginStorage[name]); + }; + + /** + * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`). + * + * @param {string|Function} plugin + * If a string, matches the name of a plugin. If a function, will be + * tested directly. + * + * @returns {boolean} + * Whether or not a plugin is a basic plugin. + */ + + + Plugin.isBasic = function isBasic(plugin) { + var p = typeof plugin === 'string' ? getPlugin(plugin) : plugin; + + return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype); + }; + + /** + * Register a Video.js plugin. + * + * @param {string} name + * The name of the plugin to be registered. Must be a string and + * must not match an existing plugin or a method on the `Player` + * prototype. + * + * @param {Function} plugin + * A sub-class of `Plugin` or a function for basic plugins. + * + * @returns {Function} + * For advanced plugins, a factory function for that plugin. For + * basic plugins, a wrapper function that initializes the plugin. + */ + + + Plugin.registerPlugin = function registerPlugin(name, plugin) { + if (typeof name !== 'string') { + throw new Error('Illegal plugin name, "' + name + '", must be a string, was ' + (typeof name === 'undefined' ? 'undefined' : _typeof(name)) + '.'); + } + + if (pluginExists(name)) { + log$1.warn('A plugin named "' + name + '" already exists. You may want to avoid re-registering plugins!'); + } else if (Player.prototype.hasOwnProperty(name)) { + throw new Error('Illegal plugin name, "' + name + '", cannot share a name with an existing player method!'); + } + + if (typeof plugin !== 'function') { + throw new Error('Illegal plugin for "' + name + '", must be a function, was ' + (typeof plugin === 'undefined' ? 'undefined' : _typeof(plugin)) + '.'); + } + + pluginStorage[name] = plugin; + + // Add a player prototype method for all sub-classed plugins (but not for + // the base Plugin class). + if (name !== BASE_PLUGIN_NAME) { + if (Plugin.isBasic(plugin)) { + Player.prototype[name] = createBasicPlugin(name, plugin); + } else { + Player.prototype[name] = createPluginFactory(name, plugin); + } + } + + return plugin; + }; + + /** + * De-register a Video.js plugin. + * + * @param {string} name + * The name of the plugin to be deregistered. + */ + + + Plugin.deregisterPlugin = function deregisterPlugin(name) { + if (name === BASE_PLUGIN_NAME) { + throw new Error('Cannot de-register base plugin.'); + } + if (pluginExists(name)) { + delete pluginStorage[name]; + delete Player.prototype[name]; + } + }; + + /** + * Gets an object containing multiple Video.js plugins. + * + * @param {Array} [names] + * If provided, should be an array of plugin names. Defaults to _all_ + * plugin names. + * + * @returns {Object|undefined} + * An object containing plugin(s) associated with their name(s) or + * `undefined` if no matching plugins exist). + */ + + + Plugin.getPlugins = function getPlugins() { + var names = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : Object.keys(pluginStorage); + + var result = void 0; + + names.forEach(function (name) { + var plugin = getPlugin(name); + + if (plugin) { + result = result || {}; + result[name] = plugin; + } + }); + + return result; + }; + + /** + * Gets a plugin's version, if available + * + * @param {string} name + * The name of a plugin. + * + * @returns {string} + * The plugin's version or an empty string. + */ + + + Plugin.getPluginVersion = function getPluginVersion(name) { + var plugin = getPlugin(name); + + return plugin && plugin.VERSION || ''; + }; + + return Plugin; + }(); + + /** + * Gets a plugin by name if it exists. + * + * @static + * @method getPlugin + * @memberOf Plugin + * @param {string} name + * The name of a plugin. + * + * @returns {Function|undefined} + * The plugin (or `undefined`). + */ + + + Plugin.getPlugin = getPlugin; + + /** + * The name of the base plugin class as it is registered. + * + * @type {string} + */ + Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME; + + Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin); + + /** + * Documented in player.js + * + * @ignore + */ + Player.prototype.usingPlugin = function (name) { + return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true; + }; + + /** + * Documented in player.js + * + * @ignore + */ + Player.prototype.hasPlugin = function (name) { + return !!pluginExists(name); + }; + + /** + * @file extend.js + * @module extend + */ + + /** + * A combination of node inherits and babel's inherits (after transpile). + * Both work the same but node adds `super_` to the subClass + * and Bable adds the superClass as __proto__. Both seem useful. + * + * @param {Object} subClass + * The class to inherit to + * + * @param {Object} superClass + * The class to inherit from + * + * @private + */ + var _inherits = function _inherits(subClass, superClass) { + if (typeof superClass !== 'function' && superClass !== null) { + throw new TypeError('Super expression must either be null or a function, not ' + (typeof superClass === 'undefined' ? 'undefined' : _typeof(superClass))); + } + + subClass.prototype = Object.create(superClass && superClass.prototype, { + constructor: { + value: subClass, + enumerable: false, + writable: true, + configurable: true + } + }); + + if (superClass) { + // node + subClass.super_ = superClass; + } + }; + + /** + * Function for subclassing using the same inheritance that + * videojs uses internally + * + * @static + * @const + * + * @param {Object} superClass + * The class to inherit from + * + * @param {Object} [subClassMethods={}] + * The class to inherit to + * + * @return {Object} + * The new object with subClassMethods that inherited superClass. + */ + var extendFn = function extendFn(superClass) { + var subClassMethods = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + var subClass = function subClass() { + superClass.apply(this, arguments); + }; + + var methods = {}; + + if ((typeof subClassMethods === 'undefined' ? 'undefined' : _typeof(subClassMethods)) === 'object') { + if (subClassMethods.constructor !== Object.prototype.constructor) { + subClass = subClassMethods.constructor; + } + methods = subClassMethods; + } else if (typeof subClassMethods === 'function') { + subClass = subClassMethods; + } + + _inherits(subClass, superClass); + + // Extend subObj's prototype with functions and other properties from props + for (var name in methods) { + if (methods.hasOwnProperty(name)) { + subClass.prototype[name] = methods[name]; + } + } + + return subClass; + }; + + /** + * @file video.js + * @module videojs + */ + + /** + * Normalize an `id` value by trimming off a leading `#` + * + * @param {string} id + * A string, maybe with a leading `#`. + * + * @returns {string} + * The string, without any leading `#`. + */ + var normalizeId = function normalizeId(id) { + return id.indexOf('#') === 0 ? id.slice(1) : id; + }; + + /** + * Doubles as the main function for users to create a player instance and also + * the main library object. + * The `videojs` function can be used to initialize or retrieve a player. + * + * @param {string|Element} id + * Video element or video element ID + * + * @param {Object} [options] + * Optional options object for config/settings + * + * @param {Component~ReadyCallback} [ready] + * Optional ready callback + * + * @return {Player} + * A player instance + */ + function videojs$1(id, options, ready) { + var player = videojs$1.getPlayer(id); + + if (player) { + if (options) { + log$1.warn('Player "' + id + '" is already initialised. Options will not be applied.'); + } + if (ready) { + player.ready(ready); + } + return player; + } + + var el = typeof id === 'string' ? $('#' + normalizeId(id)) : id; + + if (!isEl(el)) { + throw new TypeError('The element or ID supplied is not valid. (videojs)'); + } + + if (!document_1.body.contains(el)) { + log$1.warn('The element supplied is not included in the DOM'); + } + + options = options || {}; + + videojs$1.hooks('beforesetup').forEach(function (hookFunction) { + var opts = hookFunction(el, mergeOptions(options)); + + if (!isObject(opts) || Array.isArray(opts)) { + log$1.error('please return an object in beforesetup hooks'); + return; + } + + options = mergeOptions(options, opts); + }); + + // We get the current "Player" component here in case an integration has + // replaced it with a custom player. + var PlayerComponent = Component.getComponent('Player'); + + player = new PlayerComponent(el, options, ready); + + videojs$1.hooks('setup').forEach(function (hookFunction) { + return hookFunction(player); + }); + + return player; + } + + /** + * An Object that contains lifecycle hooks as keys which point to an array + * of functions that are run when a lifecycle is triggered + */ + videojs$1.hooks_ = {}; + + /** + * Get a list of hooks for a specific lifecycle + * @function videojs.hooks + * + * @param {string} type + * the lifecyle to get hooks from + * + * @param {Function|Function[]} [fn] + * Optionally add a hook (or hooks) to the lifecycle that your are getting. + * + * @return {Array} + * an array of hooks, or an empty array if there are none. + */ + videojs$1.hooks = function (type, fn) { + videojs$1.hooks_[type] = videojs$1.hooks_[type] || []; + if (fn) { + videojs$1.hooks_[type] = videojs$1.hooks_[type].concat(fn); + } + return videojs$1.hooks_[type]; + }; + + /** + * Add a function hook to a specific videojs lifecycle. + * + * @param {string} type + * the lifecycle to hook the function to. + * + * @param {Function|Function[]} + * The function or array of functions to attach. + */ + videojs$1.hook = function (type, fn) { + videojs$1.hooks(type, fn); + }; + + /** + * Add a function hook that will only run once to a specific videojs lifecycle. + * + * @param {string} type + * the lifecycle to hook the function to. + * + * @param {Function|Function[]} + * The function or array of functions to attach. + */ + videojs$1.hookOnce = function (type, fn) { + videojs$1.hooks(type, [].concat(fn).map(function (original) { + var wrapper = function wrapper() { + videojs$1.removeHook(type, wrapper); + return original.apply(undefined, arguments); + }; + + return wrapper; + })); + }; + + /** + * Remove a hook from a specific videojs lifecycle. + * + * @param {string} type + * the lifecycle that the function hooked to + * + * @param {Function} fn + * The hooked function to remove + * + * @return {boolean} + * The function that was removed or undef + */ + videojs$1.removeHook = function (type, fn) { + var index = videojs$1.hooks(type).indexOf(fn); + + if (index <= -1) { + return false; + } + + videojs$1.hooks_[type] = videojs$1.hooks_[type].slice(); + videojs$1.hooks_[type].splice(index, 1); + + return true; + }; + + // Add default styles + if (window_1.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) { + var style$1 = $('.vjs-styles-defaults'); + + if (!style$1) { + style$1 = createStyleElement('vjs-styles-defaults'); + var head = $('head'); + + if (head) { + head.insertBefore(style$1, head.firstChild); + } + setTextContent(style$1, '\n .video-js {\n width: 300px;\n height: 150px;\n }\n\n .vjs-fluid {\n padding-top: 56.25%\n }\n '); + } + } + + // Run Auto-load players + // You have to wait at least once in case this script is loaded after your + // video in the DOM (weird behavior only with minified version) + autoSetupTimeout(1, videojs$1); + + /** + * Current software version. Follows semver. + * + * @type {string} + */ + videojs$1.VERSION = version; + + /** + * The global options object. These are the settings that take effect + * if no overrides are specified when the player is created. + * + * @type {Object} + */ + videojs$1.options = Player.prototype.options_; + + /** + * Get an object with the currently created players, keyed by player ID + * + * @return {Object} + * The created players + */ + videojs$1.getPlayers = function () { + return Player.players; + }; + + /** + * Get a single player based on an ID or DOM element. + * + * This is useful if you want to check if an element or ID has an associated + * Video.js player, but not create one if it doesn't. + * + * @param {string|Element} id + * An HTML element - `<video>`, `<audio>`, or `<video-js>` - + * or a string matching the `id` of such an element. + * + * @returns {Player|undefined} + * A player instance or `undefined` if there is no player instance + * matching the argument. + */ + videojs$1.getPlayer = function (id) { + var players = Player.players; + var tag = void 0; + + if (typeof id === 'string') { + var nId = normalizeId(id); + var player = players[nId]; + + if (player) { + return player; + } + + tag = $('#' + nId); + } else { + tag = id; + } + + if (isEl(tag)) { + var _tag = tag, + _player = _tag.player, + playerId = _tag.playerId; + + // Element may have a `player` property referring to an already created + // player instance. If so, return that. + + if (_player || players[playerId]) { + return _player || players[playerId]; + } + } + }; + + /** + * Returns an array of all current players. + * + * @return {Array} + * An array of all players. The array will be in the order that + * `Object.keys` provides, which could potentially vary between + * JavaScript engines. + * + */ + videojs$1.getAllPlayers = function () { + return ( + + // Disposed players leave a key with a `null` value, so we need to make sure + // we filter those out. + Object.keys(Player.players).map(function (k) { + return Player.players[k]; + }).filter(Boolean) + ); + }; + + /** + * Expose players object. + * + * @memberOf videojs + * @property {Object} players + */ + videojs$1.players = Player.players; + + /** + * Get a component class object by name + * + * @borrows Component.getComponent as videojs.getComponent + */ + videojs$1.getComponent = Component.getComponent; + + /** + * Register a component so it can referred to by name. Used when adding to other + * components, either through addChild `component.addChild('myComponent')` or through + * default children options `{ children: ['myComponent'] }`. + * + * > NOTE: You could also just initialize the component before adding. + * `component.addChild(new MyComponent());` + * + * @param {string} name + * The class name of the component + * + * @param {Component} comp + * The component class + * + * @return {Component} + * The newly registered component + */ + videojs$1.registerComponent = function (name$$1, comp) { + if (Tech.isTech(comp)) { + log$1.warn('The ' + name$$1 + ' tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)'); + } + + Component.registerComponent.call(Component, name$$1, comp); + }; + + /** + * Get a Tech class object by name + * + * @borrows Tech.getTech as videojs.getTech + */ + videojs$1.getTech = Tech.getTech; + + /** + * Register a Tech so it can referred to by name. + * This is used in the tech order for the player. + * + * @borrows Tech.registerTech as videojs.registerTech + */ + videojs$1.registerTech = Tech.registerTech; + + /** + * Register a middleware to a source type. + * + * @param {String} type A string representing a MIME type. + * @param {function(player):object} middleware A middleware factory that takes a player. + */ + videojs$1.use = use; + + /** + * An object that can be returned by a middleware to signify + * that the middleware is being terminated. + * + * @type {object} + * @memberOf {videojs} + * @property {object} middleware.TERMINATOR + */ + Object.defineProperty(videojs$1, 'middleware', { + value: {}, + writeable: false, + enumerable: true + }); + + Object.defineProperty(videojs$1.middleware, 'TERMINATOR', { + value: TERMINATOR, + writeable: false, + enumerable: true + }); + + /** + * A suite of browser and device tests from {@link browser}. + * + * @type {Object} + * @private + */ + videojs$1.browser = browser; + + /** + * Whether or not the browser supports touch events. Included for backward + * compatibility with 4.x, but deprecated. Use `videojs.browser.TOUCH_ENABLED` + * instead going forward. + * + * @deprecated since version 5.0 + * @type {boolean} + */ + videojs$1.TOUCH_ENABLED = TOUCH_ENABLED; + + /** + * Subclass an existing class + * Mimics ES6 subclassing with the `extend` keyword + * + * @borrows extend:extendFn as videojs.extend + */ + videojs$1.extend = extendFn; + + /** + * Merge two options objects recursively + * Performs a deep merge like lodash.merge but **only merges plain objects** + * (not arrays, elements, anything else) + * Other values will be copied directly from the second object. + * + * @borrows merge-options:mergeOptions as videojs.mergeOptions + */ + videojs$1.mergeOptions = mergeOptions; + + /** + * Change the context (this) of a function + * + * > NOTE: as of v5.0 we require an ES5 shim, so you should use the native + * `function() {}.bind(newContext);` instead of this. + * + * @borrows fn:bind as videojs.bind + */ + videojs$1.bind = bind; + + /** + * Register a Video.js plugin. + * + * @borrows plugin:registerPlugin as videojs.registerPlugin + * @method registerPlugin + * + * @param {string} name + * The name of the plugin to be registered. Must be a string and + * must not match an existing plugin or a method on the `Player` + * prototype. + * + * @param {Function} plugin + * A sub-class of `Plugin` or a function for basic plugins. + * + * @return {Function} + * For advanced plugins, a factory function for that plugin. For + * basic plugins, a wrapper function that initializes the plugin. + */ + videojs$1.registerPlugin = Plugin.registerPlugin; + + /** + * Deregister a Video.js plugin. + * + * @borrows plugin:deregisterPlugin as videojs.deregisterPlugin + * @method deregisterPlugin + * + * @param {string} name + * The name of the plugin to be deregistered. Must be a string and + * must match an existing plugin or a method on the `Player` + * prototype. + * + */ + videojs$1.deregisterPlugin = Plugin.deregisterPlugin; + + /** + * Deprecated method to register a plugin with Video.js + * + * @deprecated + * videojs.plugin() is deprecated; use videojs.registerPlugin() instead + * + * @param {string} name + * The plugin name + * + * @param {Plugin|Function} plugin + * The plugin sub-class or function + */ + videojs$1.plugin = function (name$$1, plugin) { + log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead'); + return Plugin.registerPlugin(name$$1, plugin); + }; + + /** + * Gets an object containing multiple Video.js plugins. + * + * @param {Array} [names] + * If provided, should be an array of plugin names. Defaults to _all_ + * plugin names. + * + * @return {Object|undefined} + * An object containing plugin(s) associated with their name(s) or + * `undefined` if no matching plugins exist). + */ + videojs$1.getPlugins = Plugin.getPlugins; + + /** + * Gets a plugin by name if it exists. + * + * @param {string} name + * The name of a plugin. + * + * @return {Function|undefined} + * The plugin (or `undefined`). + */ + videojs$1.getPlugin = Plugin.getPlugin; + + /** + * Gets a plugin's version, if available + * + * @param {string} name + * The name of a plugin. + * + * @return {string} + * The plugin's version or an empty string. + */ + videojs$1.getPluginVersion = Plugin.getPluginVersion; + + /** + * Adding languages so that they're available to all players. + * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });` + * + * @param {string} code + * The language code or dictionary property + * + * @param {Object} data + * The data values to be translated + * + * @return {Object} + * The resulting language dictionary object + */ + videojs$1.addLanguage = function (code, data) { + var _mergeOptions; + + code = ('' + code).toLowerCase(); + + videojs$1.options.languages = mergeOptions(videojs$1.options.languages, (_mergeOptions = {}, _mergeOptions[code] = data, _mergeOptions)); + + return videojs$1.options.languages[code]; + }; + + /** + * Log messages + * + * @borrows log:log as videojs.log + */ + videojs$1.log = log$1; + + /** + * Creates an emulated TimeRange object. + * + * @borrows time-ranges:createTimeRanges as videojs.createTimeRange + */ + /** + * @borrows time-ranges:createTimeRanges as videojs.createTimeRanges + */ + videojs$1.createTimeRange = videojs$1.createTimeRanges = createTimeRanges; + + /** + * Format seconds as a time string, H:MM:SS or M:SS + * Supplying a guide (in seconds) will force a number of leading zeros + * to cover the length of the guide + * + * @borrows format-time:formatTime as videojs.formatTime + */ + videojs$1.formatTime = formatTime; + + /** + * Replaces format-time with a custom implementation, to be used in place of the default. + * + * @borrows format-time:setFormatTime as videojs.setFormatTime + * + * @method setFormatTime + * + * @param {Function} customFn + * A custom format-time function which will be called with the current time and guide (in seconds) as arguments. + * Passed fn should return a string. + */ + videojs$1.setFormatTime = setFormatTime; + + /** + * Resets format-time to the default implementation. + * + * @borrows format-time:resetFormatTime as videojs.resetFormatTime + * + * @method resetFormatTime + */ + videojs$1.resetFormatTime = resetFormatTime; + + /** + * Resolve and parse the elements of a URL + * + * @borrows url:parseUrl as videojs.parseUrl + * + */ + videojs$1.parseUrl = parseUrl; + + /** + * Returns whether the url passed is a cross domain request or not. + * + * @borrows url:isCrossOrigin as videojs.isCrossOrigin + */ + videojs$1.isCrossOrigin = isCrossOrigin; + + /** + * Event target class. + * + * @borrows EventTarget as videojs.EventTarget + */ + videojs$1.EventTarget = EventTarget; + + /** + * Add an event listener to element + * It stores the handler function in a separate cache object + * and adds a generic handler to the element's event, + * along with a unique id (guid) to the element. + * + * @borrows events:on as videojs.on + */ + videojs$1.on = on; + + /** + * Trigger a listener only once for an event + * + * @borrows events:one as videojs.one + */ + videojs$1.one = one; + + /** + * Removes event listeners from an element + * + * @borrows events:off as videojs.off + */ + videojs$1.off = off; + + /** + * Trigger an event for an element + * + * @borrows events:trigger as videojs.trigger + */ + videojs$1.trigger = trigger; + + /** + * A cross-browser XMLHttpRequest wrapper. Here's a simple example: + * + * @param {Object} options + * settings for the request. + * + * @return {XMLHttpRequest|XDomainRequest} + * The request object. + * + * @see https://github.com/Raynos/xhr + */ + videojs$1.xhr = xhr; + + /** + * TextTrack class + * + * @borrows TextTrack as videojs.TextTrack + */ + videojs$1.TextTrack = TextTrack; + + /** + * export the AudioTrack class so that source handlers can create + * AudioTracks and then add them to the players AudioTrackList + * + * @borrows AudioTrack as videojs.AudioTrack + */ + videojs$1.AudioTrack = AudioTrack; + + /** + * export the VideoTrack class so that source handlers can create + * VideoTracks and then add them to the players VideoTrackList + * + * @borrows VideoTrack as videojs.VideoTrack + */ + videojs$1.VideoTrack = VideoTrack; + + /** + * Determines, via duck typing, whether or not a value is a DOM element. + * + * @borrows dom:isEl as videojs.isEl + * @deprecated Use videojs.dom.isEl() instead + */ + + /** + * Determines, via duck typing, whether or not a value is a text node. + * + * @borrows dom:isTextNode as videojs.isTextNode + * @deprecated Use videojs.dom.isTextNode() instead + */ + + /** + * Creates an element and applies properties. + * + * @borrows dom:createEl as videojs.createEl + * @deprecated Use videojs.dom.createEl() instead + */ + + /** + * Check if an element has a CSS class + * + * @borrows dom:hasElClass as videojs.hasClass + * @deprecated Use videojs.dom.hasClass() instead + */ + + /** + * Add a CSS class name to an element + * + * @borrows dom:addElClass as videojs.addClass + * @deprecated Use videojs.dom.addClass() instead + */ + + /** + * Remove a CSS class name from an element + * + * @borrows dom:removeElClass as videojs.removeClass + * @deprecated Use videojs.dom.removeClass() instead + */ + + /** + * Adds or removes a CSS class name on an element depending on an optional + * condition or the presence/absence of the class name. + * + * @borrows dom:toggleElClass as videojs.toggleClass + * @deprecated Use videojs.dom.toggleClass() instead + */ + + /** + * Apply attributes to an HTML element. + * + * @borrows dom:setElAttributes as videojs.setAttribute + * @deprecated Use videojs.dom.setAttributes() instead + */ + + /** + * Get an element's attribute values, as defined on the HTML tag + * Attributes are not the same as properties. They're defined on the tag + * or with setAttribute (which shouldn't be used with HTML) + * This will return true or false for boolean attributes. + * + * @borrows dom:getElAttributes as videojs.getAttributes + * @deprecated Use videojs.dom.getAttributes() instead + */ + + /** + * Empties the contents of an element. + * + * @borrows dom:emptyEl as videojs.emptyEl + * @deprecated Use videojs.dom.emptyEl() instead + */ + + /** + * Normalizes and appends content to an element. + * + * The content for an element can be passed in multiple types and + * combinations, whose behavior is as follows: + * + * - String + * Normalized into a text node. + * + * - Element, TextNode + * Passed through. + * + * - Array + * A one-dimensional array of strings, elements, nodes, or functions (which + * return single strings, elements, or nodes). + * + * - Function + * If the sole argument, is expected to produce a string, element, + * node, or array. + * + * @borrows dom:appendContents as videojs.appendContet + * @deprecated Use videojs.dom.appendContent() instead + */ + + /** + * Normalizes and inserts content into an element; this is identical to + * `appendContent()`, except it empties the element first. + * + * The content for an element can be passed in multiple types and + * combinations, whose behavior is as follows: + * + * - String + * Normalized into a text node. + * + * - Element, TextNode + * Passed through. + * + * - Array + * A one-dimensional array of strings, elements, nodes, or functions (which + * return single strings, elements, or nodes). + * + * - Function + * If the sole argument, is expected to produce a string, element, + * node, or array. + * + * @borrows dom:insertContent as videojs.insertContent + * @deprecated Use videojs.dom.insertContent() instead + */ + ['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(function (k) { + videojs$1[k] = function () { + log$1.warn('videojs.' + k + '() is deprecated; use videojs.dom.' + k + '() instead'); + return Dom[k].apply(null, arguments); + }; + }); + + /** + * A safe getComputedStyle. + * + * This is because in Firefox, if the player is loaded in an iframe with `display:none`, + * then `getComputedStyle` returns `null`, so, we do a null-check to make sure + * that the player doesn't break in these cases. + * See https://bugzilla.mozilla.org/show_bug.cgi?id=548397 for more details. + * + * @borrows computed-style:computedStyle as videojs.computedStyle + */ + videojs$1.computedStyle = computedStyle; + + /** + * Export the Dom utilities for use in external plugins + * and Tech's + */ + videojs$1.dom = Dom; + + /** + * Export the Url utilities for use in external plugins + * and Tech's + */ + videojs$1.url = Url; + + var urlToolkit = createCommonjsModule(function (module, exports) { + // see https://tools.ietf.org/html/rfc1808 + + /* jshint ignore:start */ + (function (root) { + /* jshint ignore:end */ + + var URL_REGEX = /^((?:[a-zA-Z0-9+\-.]+:)?)(\/\/[^\/?#]*)?((?:[^\/\?#]*\/)*.*?)??(;.*?)?(\?.*?)?(#.*?)?$/; + var FIRST_SEGMENT_REGEX = /^([^\/?#]*)(.*)$/; + var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g; + var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/).*?(?=\/)/g; + + var URLToolkit = { // jshint ignore:line + // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or // + // E.g + // With opts.alwaysNormalize = false (default, spec compliant) + // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g + // With opts.alwaysNormalize = true (not spec compliant) + // http://a.com/b/cd + /e/f/../g => http://a.com/e/g + buildAbsoluteURL: function buildAbsoluteURL(baseURL, relativeURL, opts) { + opts = opts || {}; + // remove any remaining space and CRLF + baseURL = baseURL.trim(); + relativeURL = relativeURL.trim(); + if (!relativeURL) { + // 2a) If the embedded URL is entirely empty, it inherits the + // entire base URL (i.e., is set equal to the base URL) + // and we are done. + if (!opts.alwaysNormalize) { + return baseURL; + } + var basePartsForNormalise = URLToolkit.parseURL(baseURL); + if (!basePartsForNormalise) { + throw new Error('Error trying to parse base URL.'); + } + basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path); + return URLToolkit.buildURLFromParts(basePartsForNormalise); + } + var relativeParts = URLToolkit.parseURL(relativeURL); + if (!relativeParts) { + throw new Error('Error trying to parse relative URL.'); + } + if (relativeParts.scheme) { + // 2b) If the embedded URL starts with a scheme name, it is + // interpreted as an absolute URL and we are done. + if (!opts.alwaysNormalize) { + return relativeURL; + } + relativeParts.path = URLToolkit.normalizePath(relativeParts.path); + return URLToolkit.buildURLFromParts(relativeParts); + } + var baseParts = URLToolkit.parseURL(baseURL); + if (!baseParts) { + throw new Error('Error trying to parse base URL.'); + } + if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') { + // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc + // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a' + var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path); + baseParts.netLoc = pathParts[1]; + baseParts.path = pathParts[2]; + } + if (baseParts.netLoc && !baseParts.path) { + baseParts.path = '/'; + } + var builtParts = { + // 2c) Otherwise, the embedded URL inherits the scheme of + // the base URL. + scheme: baseParts.scheme, + netLoc: relativeParts.netLoc, + path: null, + params: relativeParts.params, + query: relativeParts.query, + fragment: relativeParts.fragment + }; + if (!relativeParts.netLoc) { + // 3) If the embedded URL's <net_loc> is non-empty, we skip to + // Step 7. Otherwise, the embedded URL inherits the <net_loc> + // (if any) of the base URL. + builtParts.netLoc = baseParts.netLoc; + // 4) If the embedded URL path is preceded by a slash "/", the + // path is not relative and we skip to Step 7. + if (relativeParts.path[0] !== '/') { + if (!relativeParts.path) { + // 5) If the embedded URL path is empty (and not preceded by a + // slash), then the embedded URL inherits the base URL path + builtParts.path = baseParts.path; + // 5a) if the embedded URL's <params> is non-empty, we skip to + // step 7; otherwise, it inherits the <params> of the base + // URL (if any) and + if (!relativeParts.params) { + builtParts.params = baseParts.params; + // 5b) if the embedded URL's <query> is non-empty, we skip to + // step 7; otherwise, it inherits the <query> of the base + // URL (if any) and we skip to step 7. + if (!relativeParts.query) { + builtParts.query = baseParts.query; + } + } + } else { + // 6) The last segment of the base URL's path (anything + // following the rightmost slash "/", or the entire path if no + // slash is present) is removed and the embedded URL's path is + // appended in its place. + var baseURLPath = baseParts.path; + var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path; + builtParts.path = URLToolkit.normalizePath(newPath); + } + } + } + if (builtParts.path === null) { + builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path; + } + return URLToolkit.buildURLFromParts(builtParts); + }, + parseURL: function parseURL(url) { + var parts = URL_REGEX.exec(url); + if (!parts) { + return null; + } + return { + scheme: parts[1] || '', + netLoc: parts[2] || '', + path: parts[3] || '', + params: parts[4] || '', + query: parts[5] || '', + fragment: parts[6] || '' + }; + }, + normalizePath: function normalizePath(path) { + // The following operations are + // then applied, in order, to the new path: + // 6a) All occurrences of "./", where "." is a complete path + // segment, are removed. + // 6b) If the path ends with "." as a complete path segment, + // that "." is removed. + path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, ''); + // 6c) All occurrences of "<segment>/../", where <segment> is a + // complete path segment not equal to "..", are removed. + // Removal of these path segments is performed iteratively, + // removing the leftmost matching pattern on each iteration, + // until no matching pattern remains. + // 6d) If the path ends with "<segment>/..", where <segment> is a + // complete path segment not equal to "..", that + // "<segment>/.." is removed. + while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {} // jshint ignore:line + return path.split('').reverse().join(''); + }, + buildURLFromParts: function buildURLFromParts(parts) { + return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment; + } + }; + + /* jshint ignore:start */ + module.exports = URLToolkit; + })(commonjsGlobal); + /* jshint ignore:end */ + }); + + var classCallCheck$1 = function classCallCheck$$1(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + }; + + var _extends$1 = Object.assign || function (target) { + for (var i = 1; i < arguments.length; i++) { + var source = arguments[i]; + + for (var key in source) { + if (Object.prototype.hasOwnProperty.call(source, key)) { + target[key] = source[key]; + } + } + } + + return target; + }; + + var inherits$1 = function inherits$$1(subClass, superClass) { + if (typeof superClass !== "function" && superClass !== null) { + throw new TypeError("Super expression must either be null or a function, not " + (typeof superClass === "undefined" ? "undefined" : _typeof(superClass))); + } + + subClass.prototype = Object.create(superClass && superClass.prototype, { + constructor: { + value: subClass, + enumerable: false, + writable: true, + configurable: true + } + }); + if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; + }; + + var possibleConstructorReturn$1 = function possibleConstructorReturn$$1(self, call) { + if (!self) { + throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); + } + + return call && ((typeof call === "undefined" ? "undefined" : _typeof(call)) === "object" || typeof call === "function") ? call : self; + }; + + /** + * @file stream.js + */ + /** + * A lightweight readable stream implemention that handles event dispatching. + * + * @class Stream + */ + var Stream = function () { + function Stream() { + classCallCheck$1(this, Stream); + + this.listeners = {}; + } + + /** + * Add a listener for a specified event type. + * + * @param {String} type the event name + * @param {Function} listener the callback to be invoked when an event of + * the specified type occurs + */ + + Stream.prototype.on = function on(type, listener) { + if (!this.listeners[type]) { + this.listeners[type] = []; + } + this.listeners[type].push(listener); + }; + + /** + * Remove a listener for a specified event type. + * + * @param {String} type the event name + * @param {Function} listener a function previously registered for this + * type of event through `on` + * @return {Boolean} if we could turn it off or not + */ + + Stream.prototype.off = function off(type, listener) { + if (!this.listeners[type]) { + return false; + } + + var index = this.listeners[type].indexOf(listener); + + this.listeners[type].splice(index, 1); + return index > -1; + }; + + /** + * Trigger an event of the specified type on this stream. Any additional + * arguments to this function are passed as parameters to event listeners. + * + * @param {String} type the event name + */ + + Stream.prototype.trigger = function trigger(type) { + var callbacks = this.listeners[type]; + var i = void 0; + var length = void 0; + var args = void 0; + + if (!callbacks) { + return; + } + // Slicing the arguments on every invocation of this method + // can add a significant amount of overhead. Avoid the + // intermediate object creation for the common case of a + // single callback argument + if (arguments.length === 2) { + length = callbacks.length; + for (i = 0; i < length; ++i) { + callbacks[i].call(this, arguments[1]); + } + } else { + args = Array.prototype.slice.call(arguments, 1); + length = callbacks.length; + for (i = 0; i < length; ++i) { + callbacks[i].apply(this, args); + } + } + }; + + /** + * Destroys the stream and cleans up. + */ + + Stream.prototype.dispose = function dispose() { + this.listeners = {}; + }; + /** + * Forwards all `data` events on this stream to the destination stream. The + * destination stream should provide a method `push` to receive the data + * events as they arrive. + * + * @param {Stream} destination the stream that will receive all `data` events + * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options + */ + + Stream.prototype.pipe = function pipe(destination) { + this.on('data', function (data) { + destination.push(data); + }); + }; + + return Stream; + }(); + + /** + * @file m3u8/line-stream.js + */ + /** + * A stream that buffers string input and generates a `data` event for each + * line. + * + * @class LineStream + * @extends Stream + */ + + var LineStream = function (_Stream) { + inherits$1(LineStream, _Stream); + + function LineStream() { + classCallCheck$1(this, LineStream); + + var _this = possibleConstructorReturn$1(this, _Stream.call(this)); + + _this.buffer = ''; + return _this; + } + + /** + * Add new data to be parsed. + * + * @param {String} data the text to process + */ + + LineStream.prototype.push = function push(data) { + var nextNewline = void 0; + + this.buffer += data; + nextNewline = this.buffer.indexOf('\n'); + + for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) { + this.trigger('data', this.buffer.substring(0, nextNewline)); + this.buffer = this.buffer.substring(nextNewline + 1); + } + }; + + return LineStream; + }(Stream); + + /** + * @file m3u8/parse-stream.js + */ + /** + * "forgiving" attribute list psuedo-grammar: + * attributes -> keyvalue (',' keyvalue)* + * keyvalue -> key '=' value + * key -> [^=]* + * value -> '"' [^"]* '"' | [^,]* + */ + var attributeSeparator = function attributeSeparator() { + var key = '[^=]*'; + var value = '"[^"]*"|[^,]*'; + var keyvalue = '(?:' + key + ')=(?:' + value + ')'; + + return new RegExp('(?:^|,)(' + keyvalue + ')'); + }; + + /** + * Parse attributes from a line given the seperator + * + * @param {String} attributes the attibute line to parse + */ + var parseAttributes = function parseAttributes(attributes) { + // split the string using attributes as the separator + var attrs = attributes.split(attributeSeparator()); + var result = {}; + var i = attrs.length; + var attr = void 0; + + while (i--) { + // filter out unmatched portions of the string + if (attrs[i] === '') { + continue; + } + + // split the key and value + attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); + // trim whitespace and remove optional quotes around the value + attr[0] = attr[0].replace(/^\s+|\s+$/g, ''); + attr[1] = attr[1].replace(/^\s+|\s+$/g, ''); + attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1'); + result[attr[0]] = attr[1]; + } + return result; + }; + + /** + * A line-level M3U8 parser event stream. It expects to receive input one + * line at a time and performs a context-free parse of its contents. A stream + * interpretation of a manifest can be useful if the manifest is expected to + * be too large to fit comfortably into memory or the entirety of the input + * is not immediately available. Otherwise, it's probably much easier to work + * with a regular `Parser` object. + * + * Produces `data` events with an object that captures the parser's + * interpretation of the input. That object has a property `tag` that is one + * of `uri`, `comment`, or `tag`. URIs only have a single additional + * property, `line`, which captures the entirety of the input without + * interpretation. Comments similarly have a single additional property + * `text` which is the input without the leading `#`. + * + * Tags always have a property `tagType` which is the lower-cased version of + * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance, + * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized + * tags are given the tag type `unknown` and a single additional property + * `data` with the remainder of the input. + * + * @class ParseStream + * @extends Stream + */ + + var ParseStream = function (_Stream) { + inherits$1(ParseStream, _Stream); + + function ParseStream() { + classCallCheck$1(this, ParseStream); + + var _this = possibleConstructorReturn$1(this, _Stream.call(this)); + + _this.customParsers = []; + return _this; + } + + /** + * Parses an additional line of input. + * + * @param {String} line a single line of an M3U8 file to parse + */ + + ParseStream.prototype.push = function push(line) { + var match = void 0; + var event = void 0; + + // strip whitespace + line = line.replace(/^[\u0000\s]+|[\u0000\s]+$/g, ''); + if (line.length === 0) { + // ignore empty lines + return; + } + + // URIs + if (line[0] !== '#') { + this.trigger('data', { + type: 'uri', + uri: line + }); + return; + } + + for (var i = 0; i < this.customParsers.length; i++) { + if (this.customParsers[i].call(this, line)) { + return; + } + } + + // Comments + if (line.indexOf('#EXT') !== 0) { + this.trigger('data', { + type: 'comment', + text: line.slice(1) + }); + return; + } + + // strip off any carriage returns here so the regex matching + // doesn't have to account for them. + line = line.replace('\r', ''); + + // Tags + match = /^#EXTM3U/.exec(line); + if (match) { + this.trigger('data', { + type: 'tag', + tagType: 'm3u' + }); + return; + } + match = /^#EXTINF:?([0-9\.]*)?,?(.*)?$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'inf' + }; + if (match[1]) { + event.duration = parseFloat(match[1]); + } + if (match[2]) { + event.title = match[2]; + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-TARGETDURATION:?([0-9.]*)?/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'targetduration' + }; + if (match[1]) { + event.duration = parseInt(match[1], 10); + } + this.trigger('data', event); + return; + } + match = /^#ZEN-TOTAL-DURATION:?([0-9.]*)?/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'totalduration' + }; + if (match[1]) { + event.duration = parseInt(match[1], 10); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-VERSION:?([0-9.]*)?/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'version' + }; + if (match[1]) { + event.version = parseInt(match[1], 10); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-MEDIA-SEQUENCE:?(\-?[0-9.]*)?/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'media-sequence' + }; + if (match[1]) { + event.number = parseInt(match[1], 10); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-DISCONTINUITY-SEQUENCE:?(\-?[0-9.]*)?/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'discontinuity-sequence' + }; + if (match[1]) { + event.number = parseInt(match[1], 10); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-PLAYLIST-TYPE:?(.*)?$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'playlist-type' + }; + if (match[1]) { + event.playlistType = match[1]; + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-BYTERANGE:?([0-9.]*)?@?([0-9.]*)?/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'byterange' + }; + if (match[1]) { + event.length = parseInt(match[1], 10); + } + if (match[2]) { + event.offset = parseInt(match[2], 10); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-ALLOW-CACHE:?(YES|NO)?/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'allow-cache' + }; + if (match[1]) { + event.allowed = !/NO/.test(match[1]); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-MAP:?(.*)$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'map' + }; + + if (match[1]) { + var attributes = parseAttributes(match[1]); + + if (attributes.URI) { + event.uri = attributes.URI; + } + if (attributes.BYTERANGE) { + var _attributes$BYTERANGE = attributes.BYTERANGE.split('@'), + length = _attributes$BYTERANGE[0], + offset = _attributes$BYTERANGE[1]; + + event.byterange = {}; + if (length) { + event.byterange.length = parseInt(length, 10); + } + if (offset) { + event.byterange.offset = parseInt(offset, 10); + } + } + } + + this.trigger('data', event); + return; + } + match = /^#EXT-X-STREAM-INF:?(.*)$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'stream-inf' + }; + if (match[1]) { + event.attributes = parseAttributes(match[1]); + + if (event.attributes.RESOLUTION) { + var split = event.attributes.RESOLUTION.split('x'); + var resolution = {}; + + if (split[0]) { + resolution.width = parseInt(split[0], 10); + } + if (split[1]) { + resolution.height = parseInt(split[1], 10); + } + event.attributes.RESOLUTION = resolution; + } + if (event.attributes.BANDWIDTH) { + event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10); + } + if (event.attributes['PROGRAM-ID']) { + event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10); + } + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-MEDIA:?(.*)$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'media' + }; + if (match[1]) { + event.attributes = parseAttributes(match[1]); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-ENDLIST/.exec(line); + if (match) { + this.trigger('data', { + type: 'tag', + tagType: 'endlist' + }); + return; + } + match = /^#EXT-X-DISCONTINUITY/.exec(line); + if (match) { + this.trigger('data', { + type: 'tag', + tagType: 'discontinuity' + }); + return; + } + match = /^#EXT-X-PROGRAM-DATE-TIME:?(.*)$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'program-date-time' + }; + if (match[1]) { + event.dateTimeString = match[1]; + event.dateTimeObject = new Date(match[1]); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-KEY:?(.*)$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'key' + }; + if (match[1]) { + event.attributes = parseAttributes(match[1]); + // parse the IV string into a Uint32Array + if (event.attributes.IV) { + if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') { + event.attributes.IV = event.attributes.IV.substring(2); + } + + event.attributes.IV = event.attributes.IV.match(/.{8}/g); + event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16); + event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16); + event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16); + event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16); + event.attributes.IV = new Uint32Array(event.attributes.IV); + } + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-START:?(.*)$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'start' + }; + if (match[1]) { + event.attributes = parseAttributes(match[1]); + + event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']); + event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE); + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-CUE-OUT-CONT:?(.*)?$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'cue-out-cont' + }; + if (match[1]) { + event.data = match[1]; + } else { + event.data = ''; + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-CUE-OUT:?(.*)?$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'cue-out' + }; + if (match[1]) { + event.data = match[1]; + } else { + event.data = ''; + } + this.trigger('data', event); + return; + } + match = /^#EXT-X-CUE-IN:?(.*)?$/.exec(line); + if (match) { + event = { + type: 'tag', + tagType: 'cue-in' + }; + if (match[1]) { + event.data = match[1]; + } else { + event.data = ''; + } + this.trigger('data', event); + return; + } + + // unknown tag type + this.trigger('data', { + type: 'tag', + data: line.slice(4) + }); + }; + + /** + * Add a parser for custom headers + * + * @param {Object} options a map of options for the added parser + * @param {RegExp} options.expression a regular expression to match the custom header + * @param {string} options.customType the custom type to register to the output + * @param {Function} [options.dataParser] function to parse the line into an object + * @param {boolean} [options.segment] should tag data be attached to the segment object + */ + + ParseStream.prototype.addParser = function addParser(_ref) { + var _this2 = this; + + var expression = _ref.expression, + customType = _ref.customType, + dataParser = _ref.dataParser, + segment = _ref.segment; + + if (typeof dataParser !== 'function') { + dataParser = function dataParser(line) { + return line; + }; + } + this.customParsers.push(function (line) { + var match = expression.exec(line); + + if (match) { + _this2.trigger('data', { + type: 'custom', + data: dataParser(line), + customType: customType, + segment: segment + }); + return true; + } + }); + }; + + return ParseStream; + }(Stream); + + /** + * @file m3u8/parser.js + */ + /** + * A parser for M3U8 files. The current interpretation of the input is + * exposed as a property `manifest` on parser objects. It's just two lines to + * create and parse a manifest once you have the contents available as a string: + * + * ```js + * var parser = new m3u8.Parser(); + * parser.push(xhr.responseText); + * ``` + * + * New input can later be applied to update the manifest object by calling + * `push` again. + * + * The parser attempts to create a usable manifest object even if the + * underlying input is somewhat nonsensical. It emits `info` and `warning` + * events during the parse if it encounters input that seems invalid or + * requires some property of the manifest object to be defaulted. + * + * @class Parser + * @extends Stream + */ + + var Parser = function (_Stream) { + inherits$1(Parser, _Stream); + + function Parser() { + classCallCheck$1(this, Parser); + + var _this = possibleConstructorReturn$1(this, _Stream.call(this)); + + _this.lineStream = new LineStream(); + _this.parseStream = new ParseStream(); + _this.lineStream.pipe(_this.parseStream); + + /* eslint-disable consistent-this */ + var self = _this; + /* eslint-enable consistent-this */ + var uris = []; + var currentUri = {}; + // if specified, the active EXT-X-MAP definition + var currentMap = void 0; + // if specified, the active decryption key + var _key = void 0; + var noop = function noop() {}; + var defaultMediaGroups = { + 'AUDIO': {}, + 'VIDEO': {}, + 'CLOSED-CAPTIONS': {}, + 'SUBTITLES': {} + }; + // group segments into numbered timelines delineated by discontinuities + var currentTimeline = 0; + + // the manifest is empty until the parse stream begins delivering data + _this.manifest = { + allowCache: true, + discontinuityStarts: [], + segments: [] + }; + + // update the manifest with the m3u8 entry from the parse stream + _this.parseStream.on('data', function (entry) { + var mediaGroup = void 0; + var rendition = void 0; + + ({ + tag: function tag() { + // switch based on the tag type + (({ + 'allow-cache': function allowCache() { + this.manifest.allowCache = entry.allowed; + if (!('allowed' in entry)) { + this.trigger('info', { + message: 'defaulting allowCache to YES' + }); + this.manifest.allowCache = true; + } + }, + byterange: function byterange() { + var byterange = {}; + + if ('length' in entry) { + currentUri.byterange = byterange; + byterange.length = entry.length; + + if (!('offset' in entry)) { + this.trigger('info', { + message: 'defaulting offset to zero' + }); + entry.offset = 0; + } + } + if ('offset' in entry) { + currentUri.byterange = byterange; + byterange.offset = entry.offset; + } + }, + endlist: function endlist() { + this.manifest.endList = true; + }, + inf: function inf() { + if (!('mediaSequence' in this.manifest)) { + this.manifest.mediaSequence = 0; + this.trigger('info', { + message: 'defaulting media sequence to zero' + }); + } + if (!('discontinuitySequence' in this.manifest)) { + this.manifest.discontinuitySequence = 0; + this.trigger('info', { + message: 'defaulting discontinuity sequence to zero' + }); + } + if (entry.duration > 0) { + currentUri.duration = entry.duration; + } + + if (entry.duration === 0) { + currentUri.duration = 0.01; + this.trigger('info', { + message: 'updating zero segment duration to a small value' + }); + } + + this.manifest.segments = uris; + }, + key: function key() { + if (!entry.attributes) { + this.trigger('warn', { + message: 'ignoring key declaration without attribute list' + }); + return; + } + // clear the active encryption key + if (entry.attributes.METHOD === 'NONE') { + _key = null; + return; + } + if (!entry.attributes.URI) { + this.trigger('warn', { + message: 'ignoring key declaration without URI' + }); + return; + } + if (!entry.attributes.METHOD) { + this.trigger('warn', { + message: 'defaulting key method to AES-128' + }); + } + + // setup an encryption key for upcoming segments + _key = { + method: entry.attributes.METHOD || 'AES-128', + uri: entry.attributes.URI + }; + + if (typeof entry.attributes.IV !== 'undefined') { + _key.iv = entry.attributes.IV; + } + }, + 'media-sequence': function mediaSequence() { + if (!isFinite(entry.number)) { + this.trigger('warn', { + message: 'ignoring invalid media sequence: ' + entry.number + }); + return; + } + this.manifest.mediaSequence = entry.number; + }, + 'discontinuity-sequence': function discontinuitySequence() { + if (!isFinite(entry.number)) { + this.trigger('warn', { + message: 'ignoring invalid discontinuity sequence: ' + entry.number + }); + return; + } + this.manifest.discontinuitySequence = entry.number; + currentTimeline = entry.number; + }, + 'playlist-type': function playlistType() { + if (!/VOD|EVENT/.test(entry.playlistType)) { + this.trigger('warn', { + message: 'ignoring unknown playlist type: ' + entry.playlist + }); + return; + } + this.manifest.playlistType = entry.playlistType; + }, + map: function map() { + currentMap = {}; + if (entry.uri) { + currentMap.uri = entry.uri; + } + if (entry.byterange) { + currentMap.byterange = entry.byterange; + } + }, + 'stream-inf': function streamInf() { + this.manifest.playlists = uris; + this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups; + + if (!entry.attributes) { + this.trigger('warn', { + message: 'ignoring empty stream-inf attributes' + }); + return; + } + + if (!currentUri.attributes) { + currentUri.attributes = {}; + } + _extends$1(currentUri.attributes, entry.attributes); + }, + media: function media() { + this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups; + + if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) { + this.trigger('warn', { + message: 'ignoring incomplete or missing media group' + }); + return; + } + + // find the media group, creating defaults as necessary + var mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE]; + + mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {}; + mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; + + // collect the rendition metadata + rendition = { + 'default': /yes/i.test(entry.attributes.DEFAULT) + }; + if (rendition['default']) { + rendition.autoselect = true; + } else { + rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT); + } + if (entry.attributes.LANGUAGE) { + rendition.language = entry.attributes.LANGUAGE; + } + if (entry.attributes.URI) { + rendition.uri = entry.attributes.URI; + } + if (entry.attributes['INSTREAM-ID']) { + rendition.instreamId = entry.attributes['INSTREAM-ID']; + } + if (entry.attributes.CHARACTERISTICS) { + rendition.characteristics = entry.attributes.CHARACTERISTICS; + } + if (entry.attributes.FORCED) { + rendition.forced = /yes/i.test(entry.attributes.FORCED); + } + + // insert the new rendition + mediaGroup[entry.attributes.NAME] = rendition; + }, + discontinuity: function discontinuity() { + currentTimeline += 1; + currentUri.discontinuity = true; + this.manifest.discontinuityStarts.push(uris.length); + }, + 'program-date-time': function programDateTime() { + if (typeof this.manifest.dateTimeString === 'undefined') { + // PROGRAM-DATE-TIME is a media-segment tag, but for backwards + // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag + // to the manifest object + // TODO: Consider removing this in future major version + this.manifest.dateTimeString = entry.dateTimeString; + this.manifest.dateTimeObject = entry.dateTimeObject; + } + + currentUri.dateTimeString = entry.dateTimeString; + currentUri.dateTimeObject = entry.dateTimeObject; + }, + targetduration: function targetduration() { + if (!isFinite(entry.duration) || entry.duration < 0) { + this.trigger('warn', { + message: 'ignoring invalid target duration: ' + entry.duration + }); + return; + } + this.manifest.targetDuration = entry.duration; + }, + totalduration: function totalduration() { + if (!isFinite(entry.duration) || entry.duration < 0) { + this.trigger('warn', { + message: 'ignoring invalid total duration: ' + entry.duration + }); + return; + } + this.manifest.totalDuration = entry.duration; + }, + start: function start() { + if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) { + this.trigger('warn', { + message: 'ignoring start declaration without appropriate attribute list' + }); + return; + } + this.manifest.start = { + timeOffset: entry.attributes['TIME-OFFSET'], + precise: entry.attributes.PRECISE + }; + }, + 'cue-out': function cueOut() { + currentUri.cueOut = entry.data; + }, + 'cue-out-cont': function cueOutCont() { + currentUri.cueOutCont = entry.data; + }, + 'cue-in': function cueIn() { + currentUri.cueIn = entry.data; + } + })[entry.tagType] || noop).call(self); + }, + uri: function uri() { + currentUri.uri = entry.uri; + uris.push(currentUri); + + // if no explicit duration was declared, use the target duration + if (this.manifest.targetDuration && !('duration' in currentUri)) { + this.trigger('warn', { + message: 'defaulting segment duration to the target duration' + }); + currentUri.duration = this.manifest.targetDuration; + } + // annotate with encryption information, if necessary + if (_key) { + currentUri.key = _key; + } + currentUri.timeline = currentTimeline; + // annotate with initialization segment information, if necessary + if (currentMap) { + currentUri.map = currentMap; + } + + // prepare for the next URI + currentUri = {}; + }, + comment: function comment() { + // comments are not important for playback + }, + custom: function custom() { + // if this is segment-level data attach the output to the segment + if (entry.segment) { + currentUri.custom = currentUri.custom || {}; + currentUri.custom[entry.customType] = entry.data; + // if this is manifest-level data attach to the top level manifest object + } else { + this.manifest.custom = this.manifest.custom || {}; + this.manifest.custom[entry.customType] = entry.data; + } + } + })[entry.type].call(self); + }); + return _this; + } + + /** + * Parse the input string and update the manifest object. + * + * @param {String} chunk a potentially incomplete portion of the manifest + */ + + Parser.prototype.push = function push(chunk) { + this.lineStream.push(chunk); + }; + + /** + * Flush any remaining input. This can be handy if the last line of an M3U8 + * manifest did not contain a trailing newline but the file has been + * completely received. + */ + + Parser.prototype.end = function end() { + // flush any buffered input + this.lineStream.push('\n'); + }; + /** + * Add an additional parser for non-standard tags + * + * @param {Object} options a map of options for the added parser + * @param {RegExp} options.expression a regular expression to match the custom header + * @param {string} options.type the type to register to the output + * @param {Function} [options.dataParser] function to parse the line into an object + * @param {boolean} [options.segment] should tag data be attached to the segment object + */ + + Parser.prototype.addParser = function addParser(options) { + this.parseStream.addParser(options); + }; + + return Parser; + }(Stream); + + /** + * mpd-parser + * @version 0.6.1 + * @copyright 2018 Brightcove, Inc + * @license Apache-2.0 + */ + + var formatAudioPlaylist = function formatAudioPlaylist(_ref) { + var _attributes; + + var attributes = _ref.attributes, + segments = _ref.segments; + + var playlist = { + attributes: (_attributes = { + NAME: attributes.id, + BANDWIDTH: attributes.bandwidth, + CODECS: attributes.codecs + }, _attributes['PROGRAM-ID'] = 1, _attributes), + uri: '', + endList: (attributes.type || 'static') === 'static', + timeline: attributes.periodIndex, + resolvedUri: '', + targetDuration: attributes.duration, + segments: segments, + mediaSequence: segments.length ? segments[0].number : 1 + }; + + if (attributes.contentProtection) { + playlist.contentProtection = attributes.contentProtection; + } + + return playlist; + }; + + var formatVttPlaylist = function formatVttPlaylist(_ref2) { + var _attributes2; + + var attributes = _ref2.attributes, + segments = _ref2.segments; + + if (typeof segments === 'undefined') { + // vtt tracks may use single file in BaseURL + segments = [{ + uri: attributes.baseUrl, + timeline: attributes.periodIndex, + resolvedUri: attributes.baseUrl || '', + duration: attributes.sourceDuration, + number: 0 + }]; + // targetDuration should be the same duration as the only segment + attributes.duration = attributes.sourceDuration; + } + return { + attributes: (_attributes2 = { + NAME: attributes.id, + BANDWIDTH: attributes.bandwidth + }, _attributes2['PROGRAM-ID'] = 1, _attributes2), + uri: '', + endList: (attributes.type || 'static') === 'static', + timeline: attributes.periodIndex, + resolvedUri: attributes.baseUrl || '', + targetDuration: attributes.duration, + segments: segments, + mediaSequence: segments.length ? segments[0].number : 1 + }; + }; + + var organizeAudioPlaylists = function organizeAudioPlaylists(playlists) { + return playlists.reduce(function (a, playlist) { + var role = playlist.attributes.role && playlist.attributes.role.value || 'main'; + var language = playlist.attributes.lang || ''; + + var label = 'main'; + + if (language) { + label = playlist.attributes.lang + ' (' + role + ')'; + } + + // skip if we already have the highest quality audio for a language + if (a[label] && a[label].playlists[0].attributes.BANDWIDTH > playlist.attributes.bandwidth) { + return a; + } + + a[label] = { + language: language, + autoselect: true, + 'default': role === 'main', + playlists: [formatAudioPlaylist(playlist)], + uri: '' + }; + + return a; + }, {}); + }; + + var organizeVttPlaylists = function organizeVttPlaylists(playlists) { + return playlists.reduce(function (a, playlist) { + var label = playlist.attributes.lang || 'text'; + + // skip if we already have subtitles + if (a[label]) { + return a; + } + + a[label] = { + language: label, + 'default': false, + autoselect: false, + playlists: [formatVttPlaylist(playlist)], + uri: '' + }; + + return a; + }, {}); + }; + + var formatVideoPlaylist = function formatVideoPlaylist(_ref3) { + var _attributes3; + + var attributes = _ref3.attributes, + segments = _ref3.segments; + + var playlist = { + attributes: (_attributes3 = { + NAME: attributes.id, + AUDIO: 'audio', + SUBTITLES: 'subs', + RESOLUTION: { + width: attributes.width, + height: attributes.height + }, + CODECS: attributes.codecs, + BANDWIDTH: attributes.bandwidth + }, _attributes3['PROGRAM-ID'] = 1, _attributes3), + uri: '', + endList: (attributes.type || 'static') === 'static', + timeline: attributes.periodIndex, + resolvedUri: '', + targetDuration: attributes.duration, + segments: segments, + mediaSequence: segments.length ? segments[0].number : 1 + }; + + if (attributes.contentProtection) { + playlist.contentProtection = attributes.contentProtection; + } + + return playlist; + }; + + var toM3u8 = function toM3u8(dashPlaylists) { + var _mediaGroups; + + if (!dashPlaylists.length) { + return {}; + } + + // grab all master attributes + var _dashPlaylists$0$attr = dashPlaylists[0].attributes, + duration = _dashPlaylists$0$attr.sourceDuration, + _dashPlaylists$0$attr2 = _dashPlaylists$0$attr.minimumUpdatePeriod, + minimumUpdatePeriod = _dashPlaylists$0$attr2 === undefined ? 0 : _dashPlaylists$0$attr2; + + var videoOnly = function videoOnly(_ref4) { + var attributes = _ref4.attributes; + return attributes.mimeType === 'video/mp4' || attributes.contentType === 'video'; + }; + var audioOnly = function audioOnly(_ref5) { + var attributes = _ref5.attributes; + return attributes.mimeType === 'audio/mp4' || attributes.contentType === 'audio'; + }; + var vttOnly = function vttOnly(_ref6) { + var attributes = _ref6.attributes; + return attributes.mimeType === 'text/vtt' || attributes.contentType === 'text'; + }; + + var videoPlaylists = dashPlaylists.filter(videoOnly).map(formatVideoPlaylist); + var audioPlaylists = dashPlaylists.filter(audioOnly); + var vttPlaylists = dashPlaylists.filter(vttOnly); + + var master = { + allowCache: true, + discontinuityStarts: [], + segments: [], + endList: true, + mediaGroups: (_mediaGroups = { + AUDIO: {}, + VIDEO: {} + }, _mediaGroups['CLOSED-CAPTIONS'] = {}, _mediaGroups.SUBTITLES = {}, _mediaGroups), + uri: '', + duration: duration, + playlists: videoPlaylists, + minimumUpdatePeriod: minimumUpdatePeriod * 1000 + }; + + if (audioPlaylists.length) { + master.mediaGroups.AUDIO.audio = organizeAudioPlaylists(audioPlaylists); + } + + if (vttPlaylists.length) { + master.mediaGroups.SUBTITLES.subs = organizeVttPlaylists(vttPlaylists); + } + + return master; + }; + + var _typeof$1 = typeof Symbol === "function" && _typeof(Symbol.iterator) === "symbol" ? function (obj) { + return typeof obj === 'undefined' ? 'undefined' : _typeof(obj); + } : function (obj) { + return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj === 'undefined' ? 'undefined' : _typeof(obj); + }; + + var isObject$1 = function isObject(obj) { + return !!obj && (typeof obj === 'undefined' ? 'undefined' : _typeof$1(obj)) === 'object'; + }; + + var merge = function merge() { + for (var _len = arguments.length, objects = Array(_len), _key = 0; _key < _len; _key++) { + objects[_key] = arguments[_key]; + } + + return objects.reduce(function (result, source) { + + Object.keys(source).forEach(function (key) { + + if (Array.isArray(result[key]) && Array.isArray(source[key])) { + result[key] = result[key].concat(source[key]); + } else if (isObject$1(result[key]) && isObject$1(source[key])) { + result[key] = merge(result[key], source[key]); + } else { + result[key] = source[key]; + } + }); + return result; + }, {}); + }; + + var resolveUrl = function resolveUrl(baseUrl, relativeUrl) { + // return early if we don't need to resolve + if (/^[a-z]+:/i.test(relativeUrl)) { + return relativeUrl; + } + + // if the base URL is relative then combine with the current location + if (!/\/\//i.test(baseUrl)) { + baseUrl = urlToolkit.buildAbsoluteURL(window_1.location.href, baseUrl); + } + + return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl); + }; + + /** + * @typedef {Object} SingleUri + * @property {string} uri - relative location of segment + * @property {string} resolvedUri - resolved location of segment + * @property {Object} byterange - Object containing information on how to make byte range + * requests following byte-range-spec per RFC2616. + * @property {String} byterange.length - length of range request + * @property {String} byterange.offset - byte offset of range request + * + * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1 + */ + + /** + * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object + * that conforms to how m3u8-parser is structured + * + * @see https://github.com/videojs/m3u8-parser + * + * @param {string} baseUrl - baseUrl provided by <BaseUrl> nodes + * @param {string} source - source url for segment + * @param {string} range - optional range used for range calls, follows + * @return {SingleUri} full segment information transformed into a format similar + * to m3u8-parser + */ + var urlTypeToSegment = function urlTypeToSegment(_ref) { + var _ref$baseUrl = _ref.baseUrl, + baseUrl = _ref$baseUrl === undefined ? '' : _ref$baseUrl, + _ref$source = _ref.source, + source = _ref$source === undefined ? '' : _ref$source, + _ref$range = _ref.range, + range = _ref$range === undefined ? '' : _ref$range; + + var init = { + uri: source, + resolvedUri: resolveUrl(baseUrl || '', source) + }; + + if (range) { + var ranges = range.split('-'); + var startRange = parseInt(ranges[0], 10); + var endRange = parseInt(ranges[1], 10); + + init.byterange = { + length: endRange - startRange, + offset: startRange + }; + } + + return init; + }; + + /** + * Calculates the R (repetition) value for a live stream (for the final segment + * in a manifest where the r value is negative 1) + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {number} time + * current time (typically the total time up until the final segment) + * @param {number} duration + * duration property for the given <S /> + * + * @return {number} + * R value to reach the end of the given period + */ + var getLiveRValue = function getLiveRValue(attributes, time, duration) { + var NOW = attributes.NOW, + clientOffset = attributes.clientOffset, + availabilityStartTime = attributes.availabilityStartTime, + _attributes$timescale = attributes.timescale, + timescale = _attributes$timescale === undefined ? 1 : _attributes$timescale, + _attributes$start = attributes.start, + start = _attributes$start === undefined ? 0 : _attributes$start, + _attributes$minimumUp = attributes.minimumUpdatePeriod, + minimumUpdatePeriod = _attributes$minimumUp === undefined ? 0 : _attributes$minimumUp; + + var now = (NOW + clientOffset) / 1000; + var periodStartWC = availabilityStartTime + start; + var periodEndWC = now + minimumUpdatePeriod; + var periodDuration = periodEndWC - periodStartWC; + + return Math.ceil((periodDuration * timescale - time) / duration); + }; + + /** + * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment + * timing and duration + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]} segmentTimeline + * List of objects representing the attributes of each S element contained within + * + * @return {{number: number, duration: number, time: number, timeline: number}[]} + * List of Objects with segment timing and duration info + */ + var parseByTimeline = function parseByTimeline(attributes, segmentTimeline) { + var _attributes$type = attributes.type, + type = _attributes$type === undefined ? 'static' : _attributes$type, + _attributes$minimumUp2 = attributes.minimumUpdatePeriod, + minimumUpdatePeriod = _attributes$minimumUp2 === undefined ? 0 : _attributes$minimumUp2, + _attributes$media = attributes.media, + media = _attributes$media === undefined ? '' : _attributes$media, + sourceDuration = attributes.sourceDuration, + _attributes$timescale2 = attributes.timescale, + timescale = _attributes$timescale2 === undefined ? 1 : _attributes$timescale2, + _attributes$startNumb = attributes.startNumber, + startNumber = _attributes$startNumb === undefined ? 1 : _attributes$startNumb, + timeline = attributes.periodIndex; + + var segments = []; + var time = -1; + + for (var sIndex = 0; sIndex < segmentTimeline.length; sIndex++) { + var S = segmentTimeline[sIndex]; + var duration = S.d; + var repeat = S.r || 0; + var segmentTime = S.t || 0; + + if (time < 0) { + // first segment + time = segmentTime; + } + + if (segmentTime && segmentTime > time) { + // discontinuity + + // TODO: How to handle this type of discontinuity + // timeline++ here would treat it like HLS discontuity and content would + // get appended without gap + // E.G. + // <S t="0" d="1" /> + // <S d="1" /> + // <S d="1" /> + // <S t="5" d="1" /> + // would have $Time$ values of [0, 1, 2, 5] + // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY) + // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP) + // does the value of sourceDuration consider this when calculating arbitrary + // negative @r repeat value? + // E.G. Same elements as above with this added at the end + // <S d="1" r="-1" /> + // with a sourceDuration of 10 + // Would the 2 gaps be included in the time duration calculations resulting in + // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments + // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ? + + time = segmentTime; + } + + var count = void 0; + + if (repeat < 0) { + var nextS = sIndex + 1; + + if (nextS === segmentTimeline.length) { + // last segment + if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) { + count = getLiveRValue(attributes, time, duration); + } else { + // TODO: This may be incorrect depending on conclusion of TODO above + count = (sourceDuration * timescale - time) / duration; + } + } else { + count = (segmentTimeline[nextS].t - time) / duration; + } + } else { + count = repeat + 1; + } + + var end = startNumber + segments.length + count; + var number = startNumber + segments.length; + + while (number < end) { + segments.push({ number: number, duration: duration / timescale, time: time, timeline: timeline }); + time += duration; + number++; + } + } + + return segments; + }; + + var range = function range(start, end) { + var result = []; + + for (var i = start; i < end; i++) { + result.push(i); + } + + return result; + }; + + var flatten = function flatten(lists) { + return lists.reduce(function (x, y) { + return x.concat(y); + }, []); + }; + + var from = function from(list) { + if (!list.length) { + return []; + } + + var result = []; + + for (var i = 0; i < list.length; i++) { + result.push(list[i]); + } + + return result; + }; + + /** + * Functions for calculating the range of available segments in static and dynamic + * manifests. + */ + var segmentRange = { + /** + * Returns the entire range of available segments for a static MPD + * + * @param {Object} attributes + * Inheritied MPD attributes + * @return {{ start: number, end: number }} + * The start and end numbers for available segments + */ + 'static': function _static(attributes) { + var duration = attributes.duration, + _attributes$timescale = attributes.timescale, + timescale = _attributes$timescale === undefined ? 1 : _attributes$timescale, + sourceDuration = attributes.sourceDuration; + + return { + start: 0, + end: Math.ceil(sourceDuration / (duration / timescale)) + }; + }, + + /** + * Returns the current live window range of available segments for a dynamic MPD + * + * @param {Object} attributes + * Inheritied MPD attributes + * @return {{ start: number, end: number }} + * The start and end numbers for available segments + */ + dynamic: function dynamic(attributes) { + var NOW = attributes.NOW, + clientOffset = attributes.clientOffset, + availabilityStartTime = attributes.availabilityStartTime, + _attributes$timescale2 = attributes.timescale, + timescale = _attributes$timescale2 === undefined ? 1 : _attributes$timescale2, + duration = attributes.duration, + _attributes$start = attributes.start, + start = _attributes$start === undefined ? 0 : _attributes$start, + _attributes$minimumUp = attributes.minimumUpdatePeriod, + minimumUpdatePeriod = _attributes$minimumUp === undefined ? 0 : _attributes$minimumUp, + _attributes$timeShift = attributes.timeShiftBufferDepth, + timeShiftBufferDepth = _attributes$timeShift === undefined ? Infinity : _attributes$timeShift; + + var now = (NOW + clientOffset) / 1000; + var periodStartWC = availabilityStartTime + start; + var periodEndWC = now + minimumUpdatePeriod; + var periodDuration = periodEndWC - periodStartWC; + var segmentCount = Math.ceil(periodDuration * timescale / duration); + var availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration); + var availableEnd = Math.floor((now - periodStartWC) * timescale / duration); + + return { + start: Math.max(0, availableStart), + end: Math.min(segmentCount, availableEnd) + }; + } + }; + + /** + * Maps a range of numbers to objects with information needed to build the corresponding + * segment list + * + * @name toSegmentsCallback + * @function + * @param {number} number + * Number of the segment + * @param {number} index + * Index of the number in the range list + * @return {{ number: Number, duration: Number, timeline: Number, time: Number }} + * Object with segment timing and duration info + */ + + /** + * Returns a callback for Array.prototype.map for mapping a range of numbers to + * information needed to build the segment list. + * + * @param {Object} attributes + * Inherited MPD attributes + * @return {toSegmentsCallback} + * Callback map function + */ + var toSegments = function toSegments(attributes) { + return function (number, index) { + var duration = attributes.duration, + _attributes$timescale3 = attributes.timescale, + timescale = _attributes$timescale3 === undefined ? 1 : _attributes$timescale3, + periodIndex = attributes.periodIndex, + _attributes$startNumb = attributes.startNumber, + startNumber = _attributes$startNumb === undefined ? 1 : _attributes$startNumb; + + return { + number: startNumber + number, + duration: duration / timescale, + timeline: periodIndex, + time: index * duration + }; + }; + }; + + /** + * Returns a list of objects containing segment timing and duration info used for + * building the list of segments. This uses the @duration attribute specified + * in the MPD manifest to derive the range of segments. + * + * @param {Object} attributes + * Inherited MPD attributes + * @return {{number: number, duration: number, time: number, timeline: number}[]} + * List of Objects with segment timing and duration info + */ + var parseByDuration = function parseByDuration(attributes) { + var _attributes$type = attributes.type, + type = _attributes$type === undefined ? 'static' : _attributes$type, + duration = attributes.duration, + _attributes$timescale4 = attributes.timescale, + timescale = _attributes$timescale4 === undefined ? 1 : _attributes$timescale4, + sourceDuration = attributes.sourceDuration; + + var _segmentRange$type = segmentRange[type](attributes), + start = _segmentRange$type.start, + end = _segmentRange$type.end; + + var segments = range(start, end).map(toSegments(attributes)); + + if (type === 'static') { + var index = segments.length - 1; + + // final segment may be less than full segment duration + segments[index].duration = sourceDuration - duration / timescale * index; + } + + return segments; + }; + + var identifierPattern = /\$([A-z]*)(?:(%0)([0-9]+)d)?\$/g; + + /** + * Replaces template identifiers with corresponding values. To be used as the callback + * for String.prototype.replace + * + * @name replaceCallback + * @function + * @param {string} match + * Entire match of identifier + * @param {string} identifier + * Name of matched identifier + * @param {string} format + * Format tag string. Its presence indicates that padding is expected + * @param {string} width + * Desired length of the replaced value. Values less than this width shall be left + * zero padded + * @return {string} + * Replacement for the matched identifier + */ + + /** + * Returns a function to be used as a callback for String.prototype.replace to replace + * template identifiers + * + * @param {Obect} values + * Object containing values that shall be used to replace known identifiers + * @param {number} values.RepresentationID + * Value of the Representation@id attribute + * @param {number} values.Number + * Number of the corresponding segment + * @param {number} values.Bandwidth + * Value of the Representation@bandwidth attribute. + * @param {number} values.Time + * Timestamp value of the corresponding segment + * @return {replaceCallback} + * Callback to be used with String.prototype.replace to replace identifiers + */ + var identifierReplacement = function identifierReplacement(values) { + return function (match, identifier, format, width) { + if (match === '$$') { + // escape sequence + return '$'; + } + + if (typeof values[identifier] === 'undefined') { + return match; + } + + var value = '' + values[identifier]; + + if (identifier === 'RepresentationID') { + // Format tag shall not be present with RepresentationID + return value; + } + + if (!format) { + width = 1; + } else { + width = parseInt(width, 10); + } + + if (value.length >= width) { + return value; + } + + return '' + new Array(width - value.length + 1).join('0') + value; + }; + }; + + /** + * Constructs a segment url from a template string + * + * @param {string} url + * Template string to construct url from + * @param {Obect} values + * Object containing values that shall be used to replace known identifiers + * @param {number} values.RepresentationID + * Value of the Representation@id attribute + * @param {number} values.Number + * Number of the corresponding segment + * @param {number} values.Bandwidth + * Value of the Representation@bandwidth attribute. + * @param {number} values.Time + * Timestamp value of the corresponding segment + * @return {string} + * Segment url with identifiers replaced + */ + var constructTemplateUrl = function constructTemplateUrl(url, values) { + return url.replace(identifierPattern, identifierReplacement(values)); + }; + + /** + * Generates a list of objects containing timing and duration information about each + * segment needed to generate segment uris and the complete segment object + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]|undefined} segmentTimeline + * List of objects representing the attributes of each S element contained within + * the SegmentTimeline element + * @return {{number: number, duration: number, time: number, timeline: number}[]} + * List of Objects with segment timing and duration info + */ + var parseTemplateInfo = function parseTemplateInfo(attributes, segmentTimeline) { + if (!attributes.duration && !segmentTimeline) { + // if neither @duration or SegmentTimeline are present, then there shall be exactly + // one media segment + return [{ + number: attributes.startNumber || 1, + duration: attributes.sourceDuration, + time: 0, + timeline: attributes.periodIndex + }]; + } + + if (attributes.duration) { + return parseByDuration(attributes); + } + + return parseByTimeline(attributes, segmentTimeline); + }; + + /** + * Generates a list of segments using information provided by the SegmentTemplate element + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]|undefined} segmentTimeline + * List of objects representing the attributes of each S element contained within + * the SegmentTimeline element + * @return {Object[]} + * List of segment objects + */ + var segmentsFromTemplate = function segmentsFromTemplate(attributes, segmentTimeline) { + var templateValues = { + RepresentationID: attributes.id, + Bandwidth: attributes.bandwidth || 0 + }; + + var _attributes$initializ = attributes.initialization, + initialization = _attributes$initializ === undefined ? { sourceURL: '', range: '' } : _attributes$initializ; + + var mapSegment = urlTypeToSegment({ + baseUrl: attributes.baseUrl, + source: constructTemplateUrl(initialization.sourceURL, templateValues), + range: initialization.range + }); + + var segments = parseTemplateInfo(attributes, segmentTimeline); + + return segments.map(function (segment) { + templateValues.Number = segment.number; + templateValues.Time = segment.time; + + var uri = constructTemplateUrl(attributes.media || '', templateValues); + + return { + uri: uri, + timeline: segment.timeline, + duration: segment.duration, + resolvedUri: resolveUrl(attributes.baseUrl || '', uri), + map: mapSegment, + number: segment.number + }; + }); + }; + + var errors = { + INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD', + DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST', + DASH_INVALID_XML: 'DASH_INVALID_XML', + NO_BASE_URL: 'NO_BASE_URL', + MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION', + SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED', + UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME' + }; + + /** + * Converts a <SegmentUrl> (of type URLType from the DASH spec 5.3.9.2 Table 14) + * to an object that matches the output of a segment in videojs/mpd-parser + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object} segmentUrl + * <SegmentURL> node to translate into a segment object + * @return {Object} translated segment object + */ + var SegmentURLToSegmentObject = function SegmentURLToSegmentObject(attributes, segmentUrl) { + var baseUrl = attributes.baseUrl, + _attributes$initializ = attributes.initialization, + initialization = _attributes$initializ === undefined ? {} : _attributes$initializ; + + var initSegment = urlTypeToSegment({ + baseUrl: baseUrl, + source: initialization.sourceURL, + range: initialization.range + }); + + var segment = urlTypeToSegment({ + baseUrl: baseUrl, + source: segmentUrl.media, + range: segmentUrl.mediaRange + }); + + segment.map = initSegment; + + return segment; + }; + + /** + * Generates a list of segments using information provided by the SegmentList element + * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes. Each + * node should be translated into segment. + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @param {Object[]|undefined} segmentTimeline + * List of objects representing the attributes of each S element contained within + * the SegmentTimeline element + * @return {Object.<Array>} list of segments + */ + var segmentsFromList = function segmentsFromList(attributes, segmentTimeline) { + var duration = attributes.duration, + _attributes$segmentUr = attributes.segmentUrls, + segmentUrls = _attributes$segmentUr === undefined ? [] : _attributes$segmentUr; + + // Per spec (5.3.9.2.1) no way to determine segment duration OR + // if both SegmentTimeline and @duration are defined, it is outside of spec. + + if (!duration && !segmentTimeline || duration && segmentTimeline) { + throw new Error(errors.SEGMENT_TIME_UNSPECIFIED); + } + + var segmentUrlMap = segmentUrls.map(function (segmentUrlObject) { + return SegmentURLToSegmentObject(attributes, segmentUrlObject); + }); + var segmentTimeInfo = void 0; + + if (duration) { + segmentTimeInfo = parseByDuration(attributes); + } + + if (segmentTimeline) { + segmentTimeInfo = parseByTimeline(attributes, segmentTimeline); + } + + var segments = segmentTimeInfo.map(function (segmentTime, index) { + if (segmentUrlMap[index]) { + var segment = segmentUrlMap[index]; + + segment.timeline = segmentTime.timeline; + segment.duration = segmentTime.duration; + segment.number = segmentTime.number; + return segment; + } + // Since we're mapping we should get rid of any blank segments (in case + // the given SegmentTimeline is handling for more elements than we have + // SegmentURLs for). + }).filter(function (segment) { + return segment; + }); + + return segments; + }; + + /** + * Translates SegmentBase into a set of segments. + * (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes. Each + * node should be translated into segment. + * + * @param {Object} attributes + * Object containing all inherited attributes from parent elements with attribute + * names as keys + * @return {Object.<Array>} list of segments + */ + var segmentsFromBase = function segmentsFromBase(attributes) { + var baseUrl = attributes.baseUrl, + _attributes$initializ = attributes.initialization, + initialization = _attributes$initializ === undefined ? {} : _attributes$initializ, + sourceDuration = attributes.sourceDuration, + _attributes$timescale = attributes.timescale, + timescale = _attributes$timescale === undefined ? 1 : _attributes$timescale, + _attributes$indexRang = attributes.indexRange, + indexRange = _attributes$indexRang === undefined ? '' : _attributes$indexRang, + duration = attributes.duration; + + // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1) + + if (!baseUrl) { + throw new Error(errors.NO_BASE_URL); + } + + var initSegment = urlTypeToSegment({ + baseUrl: baseUrl, + source: initialization.sourceURL, + range: initialization.range + }); + var segment = urlTypeToSegment({ baseUrl: baseUrl, source: baseUrl, range: indexRange }); + + segment.map = initSegment; + + // If there is a duration, use it, otherwise use the given duration of the source + // (since SegmentBase is only for one total segment) + if (duration) { + var segmentTimeInfo = parseByDuration(attributes); + + if (segmentTimeInfo.length) { + segment.duration = segmentTimeInfo[0].duration; + segment.timeline = segmentTimeInfo[0].timeline; + } + } else if (sourceDuration) { + segment.duration = sourceDuration / timescale; + segment.timeline = 0; + } + + // This is used for mediaSequence + segment.number = 0; + + return [segment]; + }; + + var generateSegments = function generateSegments(_ref) { + var attributes = _ref.attributes, + segmentInfo = _ref.segmentInfo; + + var segmentAttributes = void 0; + var segmentsFn = void 0; + + if (segmentInfo.template) { + segmentsFn = segmentsFromTemplate; + segmentAttributes = merge(attributes, segmentInfo.template); + } else if (segmentInfo.base) { + segmentsFn = segmentsFromBase; + segmentAttributes = merge(attributes, segmentInfo.base); + } else if (segmentInfo.list) { + segmentsFn = segmentsFromList; + segmentAttributes = merge(attributes, segmentInfo.list); + } + + if (!segmentsFn) { + return { attributes: attributes }; + } + + var segments = segmentsFn(segmentAttributes, segmentInfo.timeline); + + // The @duration attribute will be used to determin the playlist's targetDuration which + // must be in seconds. Since we've generated the segment list, we no longer need + // @duration to be in @timescale units, so we can convert it here. + if (segmentAttributes.duration) { + var _segmentAttributes = segmentAttributes, + duration = _segmentAttributes.duration, + _segmentAttributes$ti = _segmentAttributes.timescale, + timescale = _segmentAttributes$ti === undefined ? 1 : _segmentAttributes$ti; + + segmentAttributes.duration = duration / timescale; + } else if (segments.length) { + // if there is no @duration attribute, use the largest segment duration as + // as target duration + segmentAttributes.duration = segments.reduce(function (max, segment) { + return Math.max(max, Math.ceil(segment.duration)); + }, 0); + } else { + segmentAttributes.duration = 0; + } + + return { + attributes: segmentAttributes, + segments: segments + }; + }; + + var toPlaylists = function toPlaylists(representations) { + return representations.map(generateSegments); + }; + + var findChildren = function findChildren(element, name) { + return from(element.childNodes).filter(function (_ref) { + var tagName = _ref.tagName; + return tagName === name; + }); + }; + + var getContent = function getContent(element) { + return element.textContent.trim(); + }; + + var parseDuration = function parseDuration(str) { + var SECONDS_IN_YEAR = 365 * 24 * 60 * 60; + var SECONDS_IN_MONTH = 30 * 24 * 60 * 60; + var SECONDS_IN_DAY = 24 * 60 * 60; + var SECONDS_IN_HOUR = 60 * 60; + var SECONDS_IN_MIN = 60; + + // P10Y10M10DT10H10M10.1S + var durationRegex = /P(?:(\d*)Y)?(?:(\d*)M)?(?:(\d*)D)?(?:T(?:(\d*)H)?(?:(\d*)M)?(?:([\d.]*)S)?)?/; + var match = durationRegex.exec(str); + + if (!match) { + return 0; + } + + var _match$slice = match.slice(1), + year = _match$slice[0], + month = _match$slice[1], + day = _match$slice[2], + hour = _match$slice[3], + minute = _match$slice[4], + second = _match$slice[5]; + + return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0); + }; + + var parseDate = function parseDate(str) { + // Date format without timezone according to ISO 8601 + // YYY-MM-DDThh:mm:ss.ssssss + var dateRegex = /^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/; + + // If the date string does not specifiy a timezone, we must specifiy UTC. This is + // expressed by ending with 'Z' + if (dateRegex.test(str)) { + str += 'Z'; + } + + return Date.parse(str); + }; + + // TODO: maybe order these in some way that makes it easy to find specific attributes + var parsers = { + /** + * Specifies the duration of the entire Media Presentation. Format is a duration string + * as specified in ISO 8601 + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds + */ + mediaPresentationDuration: function mediaPresentationDuration(value) { + return parseDuration(value); + }, + + /** + * Specifies the Segment availability start time for all Segments referred to in this + * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability + * time. Format is a date string as specified in ISO 8601 + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The date as seconds from unix epoch + */ + availabilityStartTime: function availabilityStartTime(value) { + return parseDate(value) / 1000; + }, + + /** + * Specifies the smallest period between potential changes to the MPD. Format is a + * duration string as specified in ISO 8601 + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds + */ + minimumUpdatePeriod: function minimumUpdatePeriod(value) { + return parseDuration(value); + }, + + /** + * Specifies the duration of the smallest time shifting buffer for any Representation + * in the MPD. Format is a duration string as specified in ISO 8601 + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds + */ + timeShiftBufferDepth: function timeShiftBufferDepth(value) { + return parseDuration(value); + }, + + /** + * Specifies the PeriodStart time of the Period relative to the availabilityStarttime. + * Format is a duration string as specified in ISO 8601 + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The duration in seconds + */ + start: function start(value) { + return parseDuration(value); + }, + + /** + * Specifies the width of the visual presentation + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed width + */ + width: function width(value) { + return parseInt(value, 10); + }, + + /** + * Specifies the height of the visual presentation + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed height + */ + height: function height(value) { + return parseInt(value, 10); + }, + + /** + * Specifies the bitrate of the representation + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed bandwidth + */ + bandwidth: function bandwidth(value) { + return parseInt(value, 10); + }, + + /** + * Specifies the number of the first Media Segment in this Representation in the Period + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed number + */ + startNumber: function startNumber(value) { + return parseInt(value, 10); + }, + + /** + * Specifies the timescale in units per seconds + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The aprsed timescale + */ + timescale: function timescale(value) { + return parseInt(value, 10); + }, + + /** + * Specifies the constant approximate Segment duration + * NOTE: The <Period> element also contains an @duration attribute. This duration + * specifies the duration of the Period. This attribute is currently not + * supported by the rest of the parser, however we still check for it to prevent + * errors. + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed duration + */ + duration: function duration(value) { + var parsedValue = parseInt(value, 10); + + if (isNaN(parsedValue)) { + return parseDuration(value); + } + + return parsedValue; + }, + + /** + * Specifies the Segment duration, in units of the value of the @timescale. + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed duration + */ + d: function d(value) { + return parseInt(value, 10); + }, + + /** + * Specifies the MPD start time, in @timescale units, the first Segment in the series + * starts relative to the beginning of the Period + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed time + */ + t: function t(value) { + return parseInt(value, 10); + }, + + /** + * Specifies the repeat count of the number of following contiguous Segments with the + * same duration expressed by the value of @d + * + * @param {string} value + * value of attribute as a string + * @return {number} + * The parsed number + */ + r: function r(value) { + return parseInt(value, 10); + }, + + /** + * Default parser for all other attributes. Acts as a no-op and just returns the value + * as a string + * + * @param {string} value + * value of attribute as a string + * @return {string} + * Unparsed value + */ + DEFAULT: function DEFAULT(value) { + return value; + } + }; + + /** + * Gets all the attributes and values of the provided node, parses attributes with known + * types, and returns an object with attribute names mapped to values. + * + * @param {Node} el + * The node to parse attributes from + * @return {Object} + * Object with all attributes of el parsed + */ + var parseAttributes$1 = function parseAttributes(el) { + if (!(el && el.attributes)) { + return {}; + } + + return from(el.attributes).reduce(function (a, e) { + var parseFn = parsers[e.name] || parsers.DEFAULT; + + a[e.name] = parseFn(e.value); + + return a; + }, {}); + }; + + function decodeB64ToUint8Array(b64Text) { + var decodedString = window_1.atob(b64Text); + var array = new Uint8Array(decodedString.length); + + for (var i = 0; i < decodedString.length; i++) { + array[i] = decodedString.charCodeAt(i); + } + return array; + } + + var keySystemsMap = { + 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey', + 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha', + 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready', + 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime' + }; + + /** + * Builds a list of urls that is the product of the reference urls and BaseURL values + * + * @param {string[]} referenceUrls + * List of reference urls to resolve to + * @param {Node[]} baseUrlElements + * List of BaseURL nodes from the mpd + * @return {string[]} + * List of resolved urls + */ + var buildBaseUrls = function buildBaseUrls(referenceUrls, baseUrlElements) { + if (!baseUrlElements.length) { + return referenceUrls; + } + + return flatten(referenceUrls.map(function (reference) { + return baseUrlElements.map(function (baseUrlElement) { + return resolveUrl(reference, getContent(baseUrlElement)); + }); + })); + }; + + /** + * Contains all Segment information for its containing AdaptationSet + * + * @typedef {Object} SegmentInformation + * @property {Object|undefined} template + * Contains the attributes for the SegmentTemplate node + * @property {Object[]|undefined} timeline + * Contains a list of atrributes for each S node within the SegmentTimeline node + * @property {Object|undefined} list + * Contains the attributes for the SegmentList node + * @property {Object|undefined} base + * Contains the attributes for the SegmentBase node + */ + + /** + * Returns all available Segment information contained within the AdaptationSet node + * + * @param {Node} adaptationSet + * The AdaptationSet node to get Segment information from + * @return {SegmentInformation} + * The Segment information contained within the provided AdaptationSet + */ + var getSegmentInformation = function getSegmentInformation(adaptationSet) { + var segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0]; + var segmentList = findChildren(adaptationSet, 'SegmentList')[0]; + var segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(function (s) { + return merge({ tag: 'SegmentURL' }, parseAttributes$1(s)); + }); + var segmentBase = findChildren(adaptationSet, 'SegmentBase')[0]; + var segmentTimelineParentNode = segmentList || segmentTemplate; + var segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0]; + var segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate; + var segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; + + // SegmentTemplate is handled slightly differently, since it can have both + // @initialization and an <Initialization> node. @initialization can be templated, + // while the node can have a url and range specified. If the <SegmentTemplate> has + // both @initialization and an <Initialization> subelement we opt to override with + // the node, as this interaction is not defined in the spec. + var template = segmentTemplate && parseAttributes$1(segmentTemplate); + + if (template && segmentInitialization) { + template.initialization = segmentInitialization && parseAttributes$1(segmentInitialization); + } else if (template && template.initialization) { + // If it is @initialization we convert it to an object since this is the format that + // later functions will rely on for the initialization segment. This is only valid + // for <SegmentTemplate> + template.initialization = { sourceURL: template.initialization }; + } + + var segmentInfo = { + template: template, + timeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(function (s) { + return parseAttributes$1(s); + }), + list: segmentList && merge(parseAttributes$1(segmentList), { + segmentUrls: segmentUrls, + initialization: parseAttributes$1(segmentInitialization) + }), + base: segmentBase && merge(parseAttributes$1(segmentBase), { + initialization: parseAttributes$1(segmentInitialization) + }) + }; + + Object.keys(segmentInfo).forEach(function (key) { + if (!segmentInfo[key]) { + delete segmentInfo[key]; + } + }); + + return segmentInfo; + }; + + /** + * Contains Segment information and attributes needed to construct a Playlist object + * from a Representation + * + * @typedef {Object} RepresentationInformation + * @property {SegmentInformation} segmentInfo + * Segment information for this Representation + * @property {Object} attributes + * Inherited attributes for this Representation + */ + + /** + * Maps a Representation node to an object containing Segment information and attributes + * + * @name inheritBaseUrlsCallback + * @function + * @param {Node} representation + * Representation node from the mpd + * @return {RepresentationInformation} + * Representation information needed to construct a Playlist object + */ + + /** + * Returns a callback for Array.prototype.map for mapping Representation nodes to + * Segment information and attributes using inherited BaseURL nodes. + * + * @param {Object} adaptationSetAttributes + * Contains attributes inherited by the AdaptationSet + * @param {string[]} adaptationSetBaseUrls + * Contains list of resolved base urls inherited by the AdaptationSet + * @param {SegmentInformation} adaptationSetSegmentInfo + * Contains Segment information for the AdaptationSet + * @return {inheritBaseUrlsCallback} + * Callback map function + */ + var inheritBaseUrls = function inheritBaseUrls(adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) { + return function (representation) { + var repBaseUrlElements = findChildren(representation, 'BaseURL'); + var repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements); + var attributes = merge(adaptationSetAttributes, parseAttributes$1(representation)); + var representationSegmentInfo = getSegmentInformation(representation); + + return repBaseUrls.map(function (baseUrl) { + return { + segmentInfo: merge(adaptationSetSegmentInfo, representationSegmentInfo), + attributes: merge(attributes, { baseUrl: baseUrl }) + }; + }); + }; + }; + + /** + * Tranforms a series of content protection nodes to + * an object containing pssh data by key system + * + * @param {Node[]} contentProtectionNodes + * Content protection nodes + * @return {Object} + * Object containing pssh data by key system + */ + var generateKeySystemInformation = function generateKeySystemInformation(contentProtectionNodes) { + return contentProtectionNodes.reduce(function (acc, node) { + var attributes = parseAttributes$1(node); + var keySystem = keySystemsMap[attributes.schemeIdUri]; + + if (keySystem) { + acc[keySystem] = { attributes: attributes }; + + var psshNode = findChildren(node, 'cenc:pssh')[0]; + + if (psshNode) { + var pssh = getContent(psshNode); + var psshBuffer = pssh && decodeB64ToUint8Array(pssh); + + acc[keySystem].pssh = psshBuffer; + } + } + + return acc; + }, {}); + }; + + /** + * Maps an AdaptationSet node to a list of Representation information objects + * + * @name toRepresentationsCallback + * @function + * @param {Node} adaptationSet + * AdaptationSet node from the mpd + * @return {RepresentationInformation[]} + * List of objects containing Representaion information + */ + + /** + * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of + * Representation information objects + * + * @param {Object} periodAttributes + * Contains attributes inherited by the Period + * @param {string[]} periodBaseUrls + * Contains list of resolved base urls inherited by the Period + * @param {string[]} periodSegmentInfo + * Contains Segment Information at the period level + * @return {toRepresentationsCallback} + * Callback map function + */ + var toRepresentations = function toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo) { + return function (adaptationSet) { + var adaptationSetAttributes = parseAttributes$1(adaptationSet); + var adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL')); + var role = findChildren(adaptationSet, 'Role')[0]; + var roleAttributes = { role: parseAttributes$1(role) }; + + var attrs = merge(periodAttributes, adaptationSetAttributes, roleAttributes); + + var contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection')); + + if (Object.keys(contentProtection).length) { + attrs = merge(attrs, { contentProtection: contentProtection }); + } + + var segmentInfo = getSegmentInformation(adaptationSet); + var representations = findChildren(adaptationSet, 'Representation'); + var adaptationSetSegmentInfo = merge(periodSegmentInfo, segmentInfo); + + return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo))); + }; + }; + + /** + * Maps an Period node to a list of Representation inforamtion objects for all + * AdaptationSet nodes contained within the Period + * + * @name toAdaptationSetsCallback + * @function + * @param {Node} period + * Period node from the mpd + * @param {number} periodIndex + * Index of the Period within the mpd + * @return {RepresentationInformation[]} + * List of objects containing Representaion information + */ + + /** + * Returns a callback for Array.prototype.map for mapping Period nodes to a list of + * Representation information objects + * + * @param {Object} mpdAttributes + * Contains attributes inherited by the mpd + * @param {string[]} mpdBaseUrls + * Contains list of resolved base urls inherited by the mpd + * @return {toAdaptationSetsCallback} + * Callback map function + */ + var toAdaptationSets = function toAdaptationSets(mpdAttributes, mpdBaseUrls) { + return function (period, periodIndex) { + var periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period, 'BaseURL')); + var periodAtt = parseAttributes$1(period); + var periodAttributes = merge(mpdAttributes, periodAtt, { periodIndex: periodIndex }); + var adaptationSets = findChildren(period, 'AdaptationSet'); + var periodSegmentInfo = getSegmentInformation(period); + + return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo))); + }; + }; + + /** + * Traverses the mpd xml tree to generate a list of Representation information objects + * that have inherited attributes from parent nodes + * + * @param {Node} mpd + * The root node of the mpd + * @param {Object} options + * Available options for inheritAttributes + * @param {string} options.manifestUri + * The uri source of the mpd + * @param {number} options.NOW + * Current time per DASH IOP. Default is current time in ms since epoch + * @param {number} options.clientOffset + * Client time difference from NOW (in milliseconds) + * @return {RepresentationInformation[]} + * List of objects containing Representation information + */ + var inheritAttributes = function inheritAttributes(mpd) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + var _options$manifestUri = options.manifestUri, + manifestUri = _options$manifestUri === undefined ? '' : _options$manifestUri, + _options$NOW = options.NOW, + NOW = _options$NOW === undefined ? Date.now() : _options$NOW, + _options$clientOffset = options.clientOffset, + clientOffset = _options$clientOffset === undefined ? 0 : _options$clientOffset; + + var periods = findChildren(mpd, 'Period'); + + if (periods.length !== 1) { + // TODO add support for multiperiod + throw new Error(errors.INVALID_NUMBER_OF_PERIOD); + } + + var mpdAttributes = parseAttributes$1(mpd); + var mpdBaseUrls = buildBaseUrls([manifestUri], findChildren(mpd, 'BaseURL')); + + mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0; + mpdAttributes.NOW = NOW; + mpdAttributes.clientOffset = clientOffset; + + return flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))); + }; + + var stringToMpdXml = function stringToMpdXml(manifestString) { + if (manifestString === '') { + throw new Error(errors.DASH_EMPTY_MANIFEST); + } + + var parser = new window_1.DOMParser(); + var xml = parser.parseFromString(manifestString, 'application/xml'); + var mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null; + + if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) { + throw new Error(errors.DASH_INVALID_XML); + } + + return mpd; + }; + + /** + * Parses the manifest for a UTCTiming node, returning the nodes attributes if found + * + * @param {string} mpd + * XML string of the MPD manifest + * @return {Object|null} + * Attributes of UTCTiming node specified in the manifest. Null if none found + */ + var parseUTCTimingScheme = function parseUTCTimingScheme(mpd) { + var UTCTimingNode = findChildren(mpd, 'UTCTiming')[0]; + + if (!UTCTimingNode) { + return null; + } + + var attributes = parseAttributes$1(UTCTimingNode); + + switch (attributes.schemeIdUri) { + case 'urn:mpeg:dash:utc:http-head:2014': + case 'urn:mpeg:dash:utc:http-head:2012': + attributes.method = 'HEAD'; + break; + case 'urn:mpeg:dash:utc:http-xsdate:2014': + case 'urn:mpeg:dash:utc:http-iso:2014': + case 'urn:mpeg:dash:utc:http-xsdate:2012': + case 'urn:mpeg:dash:utc:http-iso:2012': + attributes.method = 'GET'; + break; + case 'urn:mpeg:dash:utc:direct:2014': + case 'urn:mpeg:dash:utc:direct:2012': + attributes.method = 'DIRECT'; + attributes.value = Date.parse(attributes.value); + break; + case 'urn:mpeg:dash:utc:http-ntp:2014': + case 'urn:mpeg:dash:utc:ntp:2014': + case 'urn:mpeg:dash:utc:sntp:2014': + default: + throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME); + } + + return attributes; + }; + + var parse = function parse(manifestString, options) { + return toM3u8(toPlaylists(inheritAttributes(stringToMpdXml(manifestString), options))); + }; + + /** + * Parses the manifest for a UTCTiming node, returning the nodes attributes if found + * + * @param {string} manifestString + * XML string of the MPD manifest + * @return {Object|null} + * Attributes of UTCTiming node specified in the manifest. Null if none found + */ + var parseUTCTiming = function parseUTCTiming(manifestString) { + return parseUTCTimingScheme(stringToMpdXml(manifestString)); + }; + + var toUnsigned = function toUnsigned(value) { + return value >>> 0; + }; + + var bin = { + toUnsigned: toUnsigned + }; + var bin_1 = bin.toUnsigned; + + var bin$1 = /*#__PURE__*/Object.freeze({ + default: bin, + __moduleExports: bin, + toUnsigned: bin_1 + }); + + var require$$0$1 = ( bin$1 && bin ) || bin$1; + + var toUnsigned$1 = require$$0$1.toUnsigned; + var _findBox, parseType, timescale, startTime, getVideoTrackIds; + + // Find the data for a box specified by its path + _findBox = function findBox(data, path) { + var results = [], + i, + size, + type, + end, + subresults; + + if (!path.length) { + // short-circuit the search for empty paths + return null; + } + + for (i = 0; i < data.byteLength;) { + size = toUnsigned$1(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]); + + type = parseType(data.subarray(i + 4, i + 8)); + + end = size > 1 ? i + size : data.byteLength; + + if (type === path[0]) { + if (path.length === 1) { + // this is the end of the path and we've found the box we were + // looking for + results.push(data.subarray(i + 8, end)); + } else { + // recursively search for the next box along the path + subresults = _findBox(data.subarray(i + 8, end), path.slice(1)); + if (subresults.length) { + results = results.concat(subresults); + } + } + } + i = end; + } + + // we've finished searching all of data + return results; + }; + + /** + * Returns the string representation of an ASCII encoded four byte buffer. + * @param buffer {Uint8Array} a four-byte buffer to translate + * @return {string} the corresponding string + */ + parseType = function parseType(buffer) { + var result = ''; + result += String.fromCharCode(buffer[0]); + result += String.fromCharCode(buffer[1]); + result += String.fromCharCode(buffer[2]); + result += String.fromCharCode(buffer[3]); + return result; + }; + + /** + * Parses an MP4 initialization segment and extracts the timescale + * values for any declared tracks. Timescale values indicate the + * number of clock ticks per second to assume for time-based values + * elsewhere in the MP4. + * + * To determine the start time of an MP4, you need two pieces of + * information: the timescale unit and the earliest base media decode + * time. Multiple timescales can be specified within an MP4 but the + * base media decode time is always expressed in the timescale from + * the media header box for the track: + * ``` + * moov > trak > mdia > mdhd.timescale + * ``` + * @param init {Uint8Array} the bytes of the init segment + * @return {object} a hash of track ids to timescale values or null if + * the init segment is malformed. + */ + timescale = function timescale(init) { + var result = {}, + traks = _findBox(init, ['moov', 'trak']); + + // mdhd timescale + return traks.reduce(function (result, trak) { + var tkhd, version, index, id, mdhd; + + tkhd = _findBox(trak, ['tkhd'])[0]; + if (!tkhd) { + return null; + } + version = tkhd[0]; + index = version === 0 ? 12 : 20; + id = toUnsigned$1(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]); + + mdhd = _findBox(trak, ['mdia', 'mdhd'])[0]; + if (!mdhd) { + return null; + } + version = mdhd[0]; + index = version === 0 ? 12 : 20; + result[id] = toUnsigned$1(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]); + return result; + }, result); + }; + + /** + * Determine the base media decode start time, in seconds, for an MP4 + * fragment. If multiple fragments are specified, the earliest time is + * returned. + * + * The base media decode time can be parsed from track fragment + * metadata: + * ``` + * moof > traf > tfdt.baseMediaDecodeTime + * ``` + * It requires the timescale value from the mdhd to interpret. + * + * @param timescale {object} a hash of track ids to timescale values. + * @return {number} the earliest base media decode start time for the + * fragment, in seconds + */ + startTime = function startTime(timescale, fragment) { + var trafs, baseTimes, result; + + // we need info from two childrend of each track fragment box + trafs = _findBox(fragment, ['moof', 'traf']); + + // determine the start times for each track + baseTimes = [].concat.apply([], trafs.map(function (traf) { + return _findBox(traf, ['tfhd']).map(function (tfhd) { + var id, scale, baseTime; + + // get the track id from the tfhd + id = toUnsigned$1(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); + // assume a 90kHz clock if no timescale was specified + scale = timescale[id] || 90e3; + + // get the base media decode time from the tfdt + baseTime = _findBox(traf, ['tfdt']).map(function (tfdt) { + var version, result; + + version = tfdt[0]; + result = toUnsigned$1(tfdt[4] << 24 | tfdt[5] << 16 | tfdt[6] << 8 | tfdt[7]); + if (version === 1) { + result *= Math.pow(2, 32); + result += toUnsigned$1(tfdt[8] << 24 | tfdt[9] << 16 | tfdt[10] << 8 | tfdt[11]); + } + return result; + })[0]; + baseTime = baseTime || Infinity; + + // convert base time to seconds + return baseTime / scale; + }); + })); + + // return the minimum + result = Math.min.apply(null, baseTimes); + return isFinite(result) ? result : 0; + }; + + /** + * Find the trackIds of the video tracks in this source. + * Found by parsing the Handler Reference and Track Header Boxes: + * moov > trak > mdia > hdlr + * moov > trak > tkhd + * + * @param {Uint8Array} init - The bytes of the init segment for this source + * @return {Number[]} A list of trackIds + * + * @see ISO-BMFF-12/2015, Section 8.4.3 + **/ + getVideoTrackIds = function getVideoTrackIds(init) { + var traks = _findBox(init, ['moov', 'trak']); + var videoTrackIds = []; + + traks.forEach(function (trak) { + var hdlrs = _findBox(trak, ['mdia', 'hdlr']); + var tkhds = _findBox(trak, ['tkhd']); + + hdlrs.forEach(function (hdlr, index) { + var handlerType = parseType(hdlr.subarray(8, 12)); + var tkhd = tkhds[index]; + var view; + var version; + var trackId; + + if (handlerType === 'vide') { + view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength); + version = view.getUint8(0); + trackId = version === 0 ? view.getUint32(12) : view.getUint32(20); + + videoTrackIds.push(trackId); + } + }); + }); + + return videoTrackIds; + }; + + var probe = { + findBox: _findBox, + parseType: parseType, + timescale: timescale, + startTime: startTime, + videoTrackIds: getVideoTrackIds + }; + + /** + * mux.js + * + * Copyright (c) 2015 Brightcove + * All rights reserved. + * + * Functions that generate fragmented MP4s suitable for use with Media + * Source Extensions. + */ + + var UINT32_MAX = Math.pow(2, 32) - 1; + + var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; + + // pre-calculate constants + (function () { + var i; + types = { + avc1: [], // codingname + avcC: [], + btrt: [], + dinf: [], + dref: [], + esds: [], + ftyp: [], + hdlr: [], + mdat: [], + mdhd: [], + mdia: [], + mfhd: [], + minf: [], + moof: [], + moov: [], + mp4a: [], // codingname + mvex: [], + mvhd: [], + sdtp: [], + smhd: [], + stbl: [], + stco: [], + stsc: [], + stsd: [], + stsz: [], + stts: [], + styp: [], + tfdt: [], + tfhd: [], + traf: [], + trak: [], + trun: [], + trex: [], + tkhd: [], + vmhd: [] + }; + + // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we + // don't throw an error + if (typeof Uint8Array === 'undefined') { + return; + } + + for (i in types) { + if (types.hasOwnProperty(i)) { + types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)]; + } + } + + MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]); + AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]); + MINOR_VERSION = new Uint8Array([0, 0, 0, 1]); + VIDEO_HDLR = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00, // pre_defined + 0x76, 0x69, 0x64, 0x65, // handler_type: 'vide' + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler' + ]); + AUDIO_HDLR = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00, // pre_defined + 0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun' + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler' + ]); + HDLR_TYPES = { + video: VIDEO_HDLR, + audio: AUDIO_HDLR + }; + DREF = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x01, // entry_count + 0x00, 0x00, 0x00, 0x0c, // entry_size + 0x75, 0x72, 0x6c, 0x20, // 'url' type + 0x00, // version 0 + 0x00, 0x00, 0x01 // entry_flags + ]); + SMHD = new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, // balance, 0 means centered + 0x00, 0x00 // reserved + ]); + STCO = new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00 // entry_count + ]); + STSC = STCO; + STSZ = new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00, // sample_size + 0x00, 0x00, 0x00, 0x00 // sample_count + ]); + STTS = STCO; + VMHD = new Uint8Array([0x00, // version + 0x00, 0x00, 0x01, // flags + 0x00, 0x00, // graphicsmode + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor + ]); + })(); + + box = function box(type) { + var payload = [], + size = 0, + i, + result, + view; + + for (i = 1; i < arguments.length; i++) { + payload.push(arguments[i]); + } + + i = payload.length; + + // calculate the total size we need to allocate + while (i--) { + size += payload[i].byteLength; + } + result = new Uint8Array(size + 8); + view = new DataView(result.buffer, result.byteOffset, result.byteLength); + view.setUint32(0, result.byteLength); + result.set(type, 4); + + // copy the payload into the result + for (i = 0, size = 8; i < payload.length; i++) { + result.set(payload[i], size); + size += payload[i].byteLength; + } + return result; + }; + + dinf = function dinf() { + return box(types.dinf, box(types.dref, DREF)); + }; + + esds = function esds(track) { + return box(types.esds, new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + + // ES_Descriptor + 0x03, // tag, ES_DescrTag + 0x19, // length + 0x00, 0x00, // ES_ID + 0x00, // streamDependenceFlag, URL_flag, reserved, streamPriority + + // DecoderConfigDescriptor + 0x04, // tag, DecoderConfigDescrTag + 0x11, // length + 0x40, // object type + 0x15, // streamType + 0x00, 0x06, 0x00, // bufferSizeDB + 0x00, 0x00, 0xda, 0xc0, // maxBitrate + 0x00, 0x00, 0xda, 0xc0, // avgBitrate + + // DecoderSpecificInfo + 0x05, // tag, DecoderSpecificInfoTag + 0x02, // length + // ISO/IEC 14496-3, AudioSpecificConfig + // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35 + track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig + ])); + }; + + ftyp = function ftyp() { + return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND); + }; + + hdlr = function hdlr(type) { + return box(types.hdlr, HDLR_TYPES[type]); + }; + mdat = function mdat(data) { + return box(types.mdat, data); + }; + mdhd = function mdhd(track) { + var result = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x02, // creation_time + 0x00, 0x00, 0x00, 0x03, // modification_time + 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second + + track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF, // duration + 0x55, 0xc4, // 'und' language (undetermined) + 0x00, 0x00]); + + // Use the sample rate from the track metadata, when it is + // defined. The sample rate can be parsed out of an ADTS header, for + // instance. + if (track.samplerate) { + result[12] = track.samplerate >>> 24 & 0xFF; + result[13] = track.samplerate >>> 16 & 0xFF; + result[14] = track.samplerate >>> 8 & 0xFF; + result[15] = track.samplerate & 0xFF; + } + + return box(types.mdhd, result); + }; + mdia = function mdia(track) { + return box(types.mdia, mdhd(track), hdlr(track.type), minf(track)); + }; + mfhd = function mfhd(sequenceNumber) { + return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00, // flags + (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number + ])); + }; + minf = function minf(track) { + return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track)); + }; + moof = function moof(sequenceNumber, tracks) { + var trackFragments = [], + i = tracks.length; + // build traf boxes for each track fragment + while (i--) { + trackFragments[i] = traf(tracks[i]); + } + return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments)); + }; + /** + * Returns a movie box. + * @param tracks {array} the tracks associated with this movie + * @see ISO/IEC 14496-12:2012(E), section 8.2.1 + */ + moov = function moov(tracks) { + var i = tracks.length, + boxes = []; + + while (i--) { + boxes[i] = trak(tracks[i]); + } + + return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks))); + }; + mvex = function mvex(tracks) { + var i = tracks.length, + boxes = []; + + while (i--) { + boxes[i] = trex(tracks[i]); + } + return box.apply(null, [types.mvex].concat(boxes)); + }; + mvhd = function mvhd(duration) { + var bytes = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x01, // creation_time + 0x00, 0x00, 0x00, 0x02, // modification_time + 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second + (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF, // duration + 0x00, 0x01, 0x00, 0x00, // 1.0 rate + 0x01, 0x00, // 1.0 volume + 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined + 0xff, 0xff, 0xff, 0xff // next_track_ID + ]); + return box(types.mvhd, bytes); + }; + + sdtp = function sdtp(track) { + var samples = track.samples || [], + bytes = new Uint8Array(4 + samples.length), + flags, + i; + + // leave the full box header (4 bytes) all zero + + // write the sample table + for (i = 0; i < samples.length; i++) { + flags = samples[i].flags; + + bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy; + } + + return box(types.sdtp, bytes); + }; + + stbl = function stbl(track) { + return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO)); + }; + + (function () { + var videoSample, audioSample; + + stsd = function stsd(track) { + + return box(types.stsd, new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track)); + }; + + videoSample = function videoSample(track) { + var sps = track.sps || [], + pps = track.pps || [], + sequenceParameterSets = [], + pictureParameterSets = [], + i; + + // assemble the SPSs + for (i = 0; i < sps.length; i++) { + sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8); + sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength + sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS + } + + // assemble the PPSs + for (i = 0; i < pps.length; i++) { + pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8); + pictureParameterSets.push(pps[i].byteLength & 0xFF); + pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i])); + } + + return box(types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, // data_reference_index + 0x00, 0x00, // pre_defined + 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined + (track.width & 0xff00) >> 8, track.width & 0xff, // width + (track.height & 0xff00) >> 8, track.height & 0xff, // height + 0x00, 0x48, 0x00, 0x00, // horizresolution + 0x00, 0x48, 0x00, 0x00, // vertresolution + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, // frame_count + 0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname + 0x00, 0x18, // depth = 24 + 0x11, 0x11 // pre_defined = -1 + ]), box(types.avcC, new Uint8Array([0x01, // configurationVersion + track.profileIdc, // AVCProfileIndication + track.profileCompatibility, // profile_compatibility + track.levelIdc, // AVCLevelIndication + 0xff // lengthSizeMinusOne, hard-coded to 4 bytes + ].concat([sps.length // numOfSequenceParameterSets + ]).concat(sequenceParameterSets).concat([pps.length // numOfPictureParameterSets + ]).concat(pictureParameterSets))), // "PPS" + box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB + 0x00, 0x2d, 0xc6, 0xc0, // maxBitrate + 0x00, 0x2d, 0xc6, 0xc0])) // avgBitrate + ); + }; + + audioSample = function audioSample(track) { + return box(types.mp4a, new Uint8Array([ + + // SampleEntry, ISO/IEC 14496-12 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, // data_reference_index + + // AudioSampleEntry, ISO/IEC 14496-12 + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff, // channelcount + + (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff, // samplesize + 0x00, 0x00, // pre_defined + 0x00, 0x00, // reserved + + (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16 + + // MP4AudioSampleEntry, ISO/IEC 14496-14 + ]), esds(track)); + }; + })(); + + tkhd = function tkhd(track) { + var result = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x07, // flags + 0x00, 0x00, 0x00, 0x00, // creation_time + 0x00, 0x00, 0x00, 0x00, // modification_time + (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID + 0x00, 0x00, 0x00, 0x00, // reserved + (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF, // duration + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, // layer + 0x00, 0x00, // alternate_group + 0x01, 0x00, // non-audio track volume + 0x00, 0x00, // reserved + 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix + (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00, // width + (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height + ]); + + return box(types.tkhd, result); + }; + + /** + * Generate a track fragment (traf) box. A traf box collects metadata + * about tracks in a movie fragment (moof) box. + */ + traf = function traf(track) { + var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime; + + trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x3a, // flags + (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID + 0x00, 0x00, 0x00, 0x01, // sample_description_index + 0x00, 0x00, 0x00, 0x00, // default_sample_duration + 0x00, 0x00, 0x00, 0x00, // default_sample_size + 0x00, 0x00, 0x00, 0x00 // default_sample_flags + ])); + + upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / (UINT32_MAX + 1)); + lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % (UINT32_MAX + 1)); + + trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01, // version 1 + 0x00, 0x00, 0x00, // flags + // baseMediaDecodeTime + upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); + + // the data offset specifies the number of bytes from the start of + // the containing moof to the first payload byte of the associated + // mdat + dataOffset = 32 + // tfhd + 20 + // tfdt + 8 + // traf header + 16 + // mfhd + 8 + // moof header + 8; // mdat header + + // audio tracks require less metadata + if (track.type === 'audio') { + trackFragmentRun = trun(track, dataOffset); + return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun); + } + + // video tracks should contain an independent and disposable samples + // box (sdtp) + // generate one and adjust offsets to match + sampleDependencyTable = sdtp(track); + trackFragmentRun = trun(track, sampleDependencyTable.length + dataOffset); + return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable); + }; + + /** + * Generate a track box. + * @param track {object} a track definition + * @return {Uint8Array} the track box + */ + trak = function trak(track) { + track.duration = track.duration || 0xffffffff; + return box(types.trak, tkhd(track), mdia(track)); + }; + + trex = function trex(track) { + var result = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID + 0x00, 0x00, 0x00, 0x01, // default_sample_description_index + 0x00, 0x00, 0x00, 0x00, // default_sample_duration + 0x00, 0x00, 0x00, 0x00, // default_sample_size + 0x00, 0x01, 0x00, 0x01 // default_sample_flags + ]); + // the last two bytes of default_sample_flags is the sample + // degradation priority, a hint about the importance of this sample + // relative to others. Lower the degradation priority for all sample + // types other than video. + if (track.type !== 'video') { + result[result.length - 1] = 0x00; + } + + return box(types.trex, result); + }; + + (function () { + var audioTrun, videoTrun, trunHeader; + + // This method assumes all samples are uniform. That is, if a + // duration is present for the first sample, it will be present for + // all subsequent samples. + // see ISO/IEC 14496-12:2012, Section 8.8.8.1 + trunHeader = function trunHeader(samples, offset) { + var durationPresent = 0, + sizePresent = 0, + flagsPresent = 0, + compositionTimeOffset = 0; + + // trun flag constants + if (samples.length) { + if (samples[0].duration !== undefined) { + durationPresent = 0x1; + } + if (samples[0].size !== undefined) { + sizePresent = 0x2; + } + if (samples[0].flags !== undefined) { + flagsPresent = 0x4; + } + if (samples[0].compositionTimeOffset !== undefined) { + compositionTimeOffset = 0x8; + } + } + + return [0x00, // version 0 + 0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01, // flags + (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF, // sample_count + (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset + ]; + }; + + videoTrun = function videoTrun(track, offset) { + var bytes, samples, sample, i; + + samples = track.samples || []; + offset += 8 + 12 + 16 * samples.length; + + bytes = trunHeader(samples, offset); + + for (i = 0; i < samples.length; i++) { + sample = samples[i]; + bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration + (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF, // sample_size + sample.flags.isLeading << 2 | sample.flags.dependsOn, sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample, sample.flags.degradationPriority & 0xF0 << 8, sample.flags.degradationPriority & 0x0F, // sample_flags + (sample.compositionTimeOffset & 0xFF000000) >>> 24, (sample.compositionTimeOffset & 0xFF0000) >>> 16, (sample.compositionTimeOffset & 0xFF00) >>> 8, sample.compositionTimeOffset & 0xFF // sample_composition_time_offset + ]); + } + return box(types.trun, new Uint8Array(bytes)); + }; + + audioTrun = function audioTrun(track, offset) { + var bytes, samples, sample, i; + + samples = track.samples || []; + offset += 8 + 12 + 8 * samples.length; + + bytes = trunHeader(samples, offset); + + for (i = 0; i < samples.length; i++) { + sample = samples[i]; + bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration + (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF]); // sample_size + } + + return box(types.trun, new Uint8Array(bytes)); + }; + + trun = function trun(track, offset) { + if (track.type === 'audio') { + return audioTrun(track, offset); + } + + return videoTrun(track, offset); + }; + })(); + + var mp4Generator = { + ftyp: ftyp, + mdat: mdat, + moof: moof, + moov: moov, + initSegment: function initSegment(tracks) { + var fileType = ftyp(), + movie = moov(tracks), + result; + + result = new Uint8Array(fileType.byteLength + movie.byteLength); + result.set(fileType); + result.set(movie, fileType.byteLength); + return result; + } + }; + var mp4Generator_1 = mp4Generator.ftyp; + var mp4Generator_2 = mp4Generator.mdat; + var mp4Generator_3 = mp4Generator.moof; + var mp4Generator_4 = mp4Generator.moov; + var mp4Generator_5 = mp4Generator.initSegment; + + var mp4Generator$1 = /*#__PURE__*/Object.freeze({ + default: mp4Generator, + __moduleExports: mp4Generator, + ftyp: mp4Generator_1, + mdat: mp4Generator_2, + moof: mp4Generator_3, + moov: mp4Generator_4, + initSegment: mp4Generator_5 + }); + + /** + * mux.js + * + * Copyright (c) 2014 Brightcove + * All rights reserved. + * + * A lightweight readable stream implemention that handles event dispatching. + * Objects that inherit from streams should call init in their constructors. + */ + + var Stream$1 = function Stream() { + this.init = function () { + var listeners = {}; + /** + * Add a listener for a specified event type. + * @param type {string} the event name + * @param listener {function} the callback to be invoked when an event of + * the specified type occurs + */ + this.on = function (type, listener) { + if (!listeners[type]) { + listeners[type] = []; + } + listeners[type] = listeners[type].concat(listener); + }; + /** + * Remove a listener for a specified event type. + * @param type {string} the event name + * @param listener {function} a function previously registered for this + * type of event through `on` + */ + this.off = function (type, listener) { + var index; + if (!listeners[type]) { + return false; + } + index = listeners[type].indexOf(listener); + listeners[type] = listeners[type].slice(); + listeners[type].splice(index, 1); + return index > -1; + }; + /** + * Trigger an event of the specified type on this stream. Any additional + * arguments to this function are passed as parameters to event listeners. + * @param type {string} the event name + */ + this.trigger = function (type) { + var callbacks, i, length, args; + callbacks = listeners[type]; + if (!callbacks) { + return; + } + // Slicing the arguments on every invocation of this method + // can add a significant amount of overhead. Avoid the + // intermediate object creation for the common case of a + // single callback argument + if (arguments.length === 2) { + length = callbacks.length; + for (i = 0; i < length; ++i) { + callbacks[i].call(this, arguments[1]); + } + } else { + args = []; + i = arguments.length; + for (i = 1; i < arguments.length; ++i) { + args.push(arguments[i]); + } + length = callbacks.length; + for (i = 0; i < length; ++i) { + callbacks[i].apply(this, args); + } + } + }; + /** + * Destroys the stream and cleans up. + */ + this.dispose = function () { + listeners = {}; + }; + }; + }; + + /** + * Forwards all `data` events on this stream to the destination stream. The + * destination stream should provide a method `push` to receive the data + * events as they arrive. + * @param destination {stream} the stream that will receive all `data` events + * @param autoFlush {boolean} if false, we will not call `flush` on the destination + * when the current stream emits a 'done' event + * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options + */ + Stream$1.prototype.pipe = function (destination) { + this.on('data', function (data) { + destination.push(data); + }); + + this.on('done', function (flushSource) { + destination.flush(flushSource); + }); + + return destination; + }; + + // Default stream functions that are expected to be overridden to perform + // actual work. These are provided by the prototype as a sort of no-op + // implementation so that we don't have to check for their existence in the + // `pipe` function above. + Stream$1.prototype.push = function (data) { + this.trigger('data', data); + }; + + Stream$1.prototype.flush = function (flushSource) { + this.trigger('done', flushSource); + }; + + var stream = Stream$1; + + var stream$1 = /*#__PURE__*/Object.freeze({ + default: stream, + __moduleExports: stream + }); + + // Convert an array of nal units into an array of frames with each frame being + // composed of the nal units that make up that frame + // Also keep track of cummulative data about the frame from the nal units such + // as the frame duration, starting pts, etc. + var groupNalsIntoFrames = function groupNalsIntoFrames(nalUnits) { + var i, + currentNal, + currentFrame = [], + frames = []; + + currentFrame.byteLength = 0; + + for (i = 0; i < nalUnits.length; i++) { + currentNal = nalUnits[i]; + + // Split on 'aud'-type nal units + if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') { + // Since the very first nal unit is expected to be an AUD + // only push to the frames array when currentFrame is not empty + if (currentFrame.length) { + currentFrame.duration = currentNal.dts - currentFrame.dts; + frames.push(currentFrame); + } + currentFrame = [currentNal]; + currentFrame.byteLength = currentNal.data.byteLength; + currentFrame.pts = currentNal.pts; + currentFrame.dts = currentNal.dts; + } else { + // Specifically flag key frames for ease of use later + if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') { + currentFrame.keyFrame = true; + } + currentFrame.duration = currentNal.dts - currentFrame.dts; + currentFrame.byteLength += currentNal.data.byteLength; + currentFrame.push(currentNal); + } + } + + // For the last frame, use the duration of the previous frame if we + // have nothing better to go on + if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) { + currentFrame.duration = frames[frames.length - 1].duration; + } + + // Push the final frame + frames.push(currentFrame); + return frames; + }; + + // Convert an array of frames into an array of Gop with each Gop being composed + // of the frames that make up that Gop + // Also keep track of cummulative data about the Gop from the frames such as the + // Gop duration, starting pts, etc. + var groupFramesIntoGops = function groupFramesIntoGops(frames) { + var i, + currentFrame, + currentGop = [], + gops = []; + + // We must pre-set some of the values on the Gop since we + // keep running totals of these values + currentGop.byteLength = 0; + currentGop.nalCount = 0; + currentGop.duration = 0; + currentGop.pts = frames[0].pts; + currentGop.dts = frames[0].dts; + + // store some metadata about all the Gops + gops.byteLength = 0; + gops.nalCount = 0; + gops.duration = 0; + gops.pts = frames[0].pts; + gops.dts = frames[0].dts; + + for (i = 0; i < frames.length; i++) { + currentFrame = frames[i]; + + if (currentFrame.keyFrame) { + // Since the very first frame is expected to be an keyframe + // only push to the gops array when currentGop is not empty + if (currentGop.length) { + gops.push(currentGop); + gops.byteLength += currentGop.byteLength; + gops.nalCount += currentGop.nalCount; + gops.duration += currentGop.duration; + } + + currentGop = [currentFrame]; + currentGop.nalCount = currentFrame.length; + currentGop.byteLength = currentFrame.byteLength; + currentGop.pts = currentFrame.pts; + currentGop.dts = currentFrame.dts; + currentGop.duration = currentFrame.duration; + } else { + currentGop.duration += currentFrame.duration; + currentGop.nalCount += currentFrame.length; + currentGop.byteLength += currentFrame.byteLength; + currentGop.push(currentFrame); + } + } + + if (gops.length && currentGop.duration <= 0) { + currentGop.duration = gops[gops.length - 1].duration; + } + gops.byteLength += currentGop.byteLength; + gops.nalCount += currentGop.nalCount; + gops.duration += currentGop.duration; + + // push the final Gop + gops.push(currentGop); + return gops; + }; + + /* + * Search for the first keyframe in the GOPs and throw away all frames + * until that keyframe. Then extend the duration of the pulled keyframe + * and pull the PTS and DTS of the keyframe so that it covers the time + * range of the frames that were disposed. + * + * @param {Array} gops video GOPs + * @returns {Array} modified video GOPs + */ + var extendFirstKeyFrame = function extendFirstKeyFrame(gops) { + var currentGop; + + if (!gops[0][0].keyFrame && gops.length > 1) { + // Remove the first GOP + currentGop = gops.shift(); + + gops.byteLength -= currentGop.byteLength; + gops.nalCount -= currentGop.nalCount; + + // Extend the first frame of what is now the + // first gop to cover the time period of the + // frames we just removed + gops[0][0].dts = currentGop.dts; + gops[0][0].pts = currentGop.pts; + gops[0][0].duration += currentGop.duration; + } + + return gops; + }; + + /** + * Default sample object + * see ISO/IEC 14496-12:2012, section 8.6.4.3 + */ + var createDefaultSample = function createDefaultSample() { + return { + size: 0, + flags: { + isLeading: 0, + dependsOn: 1, + isDependedOn: 0, + hasRedundancy: 0, + degradationPriority: 0, + isNonSyncSample: 1 + } + }; + }; + + /* + * Collates information from a video frame into an object for eventual + * entry into an MP4 sample table. + * + * @param {Object} frame the video frame + * @param {Number} dataOffset the byte offset to position the sample + * @return {Object} object containing sample table info for a frame + */ + var sampleForFrame = function sampleForFrame(frame, dataOffset) { + var sample = createDefaultSample(); + + sample.dataOffset = dataOffset; + sample.compositionTimeOffset = frame.pts - frame.dts; + sample.duration = frame.duration; + sample.size = 4 * frame.length; // Space for nal unit size + sample.size += frame.byteLength; + + if (frame.keyFrame) { + sample.flags.dependsOn = 2; + sample.flags.isNonSyncSample = 0; + } + + return sample; + }; + + // generate the track's sample table from an array of gops + var generateSampleTable = function generateSampleTable(gops, baseDataOffset) { + var h, + i, + sample, + currentGop, + currentFrame, + dataOffset = baseDataOffset || 0, + samples = []; + + for (h = 0; h < gops.length; h++) { + currentGop = gops[h]; + + for (i = 0; i < currentGop.length; i++) { + currentFrame = currentGop[i]; + + sample = sampleForFrame(currentFrame, dataOffset); + + dataOffset += sample.size; + + samples.push(sample); + } + } + return samples; + }; + + // generate the track's raw mdat data from an array of gops + var concatenateNalData = function concatenateNalData(gops) { + var h, + i, + j, + currentGop, + currentFrame, + currentNal, + dataOffset = 0, + nalsByteLength = gops.byteLength, + numberOfNals = gops.nalCount, + totalByteLength = nalsByteLength + 4 * numberOfNals, + data = new Uint8Array(totalByteLength), + view = new DataView(data.buffer); + + // For each Gop.. + for (h = 0; h < gops.length; h++) { + currentGop = gops[h]; + + // For each Frame.. + for (i = 0; i < currentGop.length; i++) { + currentFrame = currentGop[i]; + + // For each NAL.. + for (j = 0; j < currentFrame.length; j++) { + currentNal = currentFrame[j]; + + view.setUint32(dataOffset, currentNal.data.byteLength); + dataOffset += 4; + data.set(currentNal.data, dataOffset); + dataOffset += currentNal.data.byteLength; + } + } + } + return data; + }; + + var frameUtils = { + groupNalsIntoFrames: groupNalsIntoFrames, + groupFramesIntoGops: groupFramesIntoGops, + extendFirstKeyFrame: extendFirstKeyFrame, + generateSampleTable: generateSampleTable, + concatenateNalData: concatenateNalData + }; + var frameUtils_1 = frameUtils.groupNalsIntoFrames; + var frameUtils_2 = frameUtils.groupFramesIntoGops; + var frameUtils_3 = frameUtils.extendFirstKeyFrame; + var frameUtils_4 = frameUtils.generateSampleTable; + var frameUtils_5 = frameUtils.concatenateNalData; + + var frameUtils$1 = /*#__PURE__*/Object.freeze({ + default: frameUtils, + __moduleExports: frameUtils, + groupNalsIntoFrames: frameUtils_1, + groupFramesIntoGops: frameUtils_2, + extendFirstKeyFrame: frameUtils_3, + generateSampleTable: frameUtils_4, + concatenateNalData: frameUtils_5 + }); + + var ONE_SECOND_IN_TS = 90000; // 90kHz clock + + /** + * Store information about the start and end of the track and the + * duration for each frame/sample we process in order to calculate + * the baseMediaDecodeTime + */ + var collectDtsInfo = function collectDtsInfo(track, data) { + if (typeof data.pts === 'number') { + if (track.timelineStartInfo.pts === undefined) { + track.timelineStartInfo.pts = data.pts; + } + + if (track.minSegmentPts === undefined) { + track.minSegmentPts = data.pts; + } else { + track.minSegmentPts = Math.min(track.minSegmentPts, data.pts); + } + + if (track.maxSegmentPts === undefined) { + track.maxSegmentPts = data.pts; + } else { + track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts); + } + } + + if (typeof data.dts === 'number') { + if (track.timelineStartInfo.dts === undefined) { + track.timelineStartInfo.dts = data.dts; + } + + if (track.minSegmentDts === undefined) { + track.minSegmentDts = data.dts; + } else { + track.minSegmentDts = Math.min(track.minSegmentDts, data.dts); + } + + if (track.maxSegmentDts === undefined) { + track.maxSegmentDts = data.dts; + } else { + track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts); + } + } + }; + + /** + * Clear values used to calculate the baseMediaDecodeTime between + * tracks + */ + var clearDtsInfo = function clearDtsInfo(track) { + delete track.minSegmentDts; + delete track.maxSegmentDts; + delete track.minSegmentPts; + delete track.maxSegmentPts; + }; + + /** + * Calculate the track's baseMediaDecodeTime based on the earliest + * DTS the transmuxer has ever seen and the minimum DTS for the + * current track + * @param track {object} track metadata configuration + * @param keepOriginalTimestamps {boolean} If true, keep the timestamps + * in the source; false to adjust the first segment to start at 0. + */ + var calculateTrackBaseMediaDecodeTime = function calculateTrackBaseMediaDecodeTime(track, keepOriginalTimestamps) { + var baseMediaDecodeTime, + scale, + minSegmentDts = track.minSegmentDts; + + // Optionally adjust the time so the first segment starts at zero. + if (!keepOriginalTimestamps) { + minSegmentDts -= track.timelineStartInfo.dts; + } + + // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where + // we want the start of the first segment to be placed + baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; + + // Add to that the distance this segment is from the very first + baseMediaDecodeTime += minSegmentDts; + + // baseMediaDecodeTime must not become negative + baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime); + + if (track.type === 'audio') { + // Audio has a different clock equal to the sampling_rate so we need to + // scale the PTS values into the clock rate of the track + scale = track.samplerate / ONE_SECOND_IN_TS; + baseMediaDecodeTime *= scale; + baseMediaDecodeTime = Math.floor(baseMediaDecodeTime); + } + + return baseMediaDecodeTime; + }; + + var trackDecodeInfo = { + clearDtsInfo: clearDtsInfo, + calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime, + collectDtsInfo: collectDtsInfo + }; + var trackDecodeInfo_1 = trackDecodeInfo.clearDtsInfo; + var trackDecodeInfo_2 = trackDecodeInfo.calculateTrackBaseMediaDecodeTime; + var trackDecodeInfo_3 = trackDecodeInfo.collectDtsInfo; + + var trackDecodeInfo$1 = /*#__PURE__*/Object.freeze({ + default: trackDecodeInfo, + __moduleExports: trackDecodeInfo, + clearDtsInfo: trackDecodeInfo_1, + calculateTrackBaseMediaDecodeTime: trackDecodeInfo_2, + collectDtsInfo: trackDecodeInfo_3 + }); + + /** + * mux.js + * + * Copyright (c) 2015 Brightcove + * All rights reserved. + * + * Reads in-band caption information from a video elementary + * stream. Captions must follow the CEA-708 standard for injection + * into an MPEG-2 transport streams. + * @see https://en.wikipedia.org/wiki/CEA-708 + * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf + */ + + // Supplemental enhancement information (SEI) NAL units have a + // payload type field to indicate how they are to be + // interpreted. CEAS-708 caption content is always transmitted with + // payload type 0x04. + + var USER_DATA_REGISTERED_ITU_T_T35 = 4, + RBSP_TRAILING_BITS = 128; + + /** + * Parse a supplemental enhancement information (SEI) NAL unit. + * Stops parsing once a message of type ITU T T35 has been found. + * + * @param bytes {Uint8Array} the bytes of a SEI NAL unit + * @return {object} the parsed SEI payload + * @see Rec. ITU-T H.264, 7.3.2.3.1 + */ + var parseSei = function parseSei(bytes) { + var i = 0, + result = { + payloadType: -1, + payloadSize: 0 + }, + payloadType = 0, + payloadSize = 0; + + // go through the sei_rbsp parsing each each individual sei_message + while (i < bytes.byteLength) { + // stop once we have hit the end of the sei_rbsp + if (bytes[i] === RBSP_TRAILING_BITS) { + break; + } + + // Parse payload type + while (bytes[i] === 0xFF) { + payloadType += 255; + i++; + } + payloadType += bytes[i++]; + + // Parse payload size + while (bytes[i] === 0xFF) { + payloadSize += 255; + i++; + } + payloadSize += bytes[i++]; + + // this sei_message is a 608/708 caption so save it and break + // there can only ever be one caption message in a frame's sei + if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) { + result.payloadType = payloadType; + result.payloadSize = payloadSize; + result.payload = bytes.subarray(i, i + payloadSize); + break; + } + + // skip the payload and parse the next message + i += payloadSize; + payloadType = 0; + payloadSize = 0; + } + + return result; + }; + + // see ANSI/SCTE 128-1 (2013), section 8.1 + var parseUserData = function parseUserData(sei) { + // itu_t_t35_contry_code must be 181 (United States) for + // captions + if (sei.payload[0] !== 181) { + return null; + } + + // itu_t_t35_provider_code should be 49 (ATSC) for captions + if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) { + return null; + } + + // the user_identifier should be "GA94" to indicate ATSC1 data + if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') { + return null; + } + + // finally, user_data_type_code should be 0x03 for caption data + if (sei.payload[7] !== 0x03) { + return null; + } + + // return the user_data_type_structure and strip the trailing + // marker bits + return sei.payload.subarray(8, sei.payload.length - 1); + }; + + // see CEA-708-D, section 4.4 + var parseCaptionPackets = function parseCaptionPackets(pts, userData) { + var results = [], + i, + count, + offset, + data; + + // if this is just filler, return immediately + if (!(userData[0] & 0x40)) { + return results; + } + + // parse out the cc_data_1 and cc_data_2 fields + count = userData[0] & 0x1f; + for (i = 0; i < count; i++) { + offset = i * 3; + data = { + type: userData[offset + 2] & 0x03, + pts: pts + }; + + // capture cc data when cc_valid is 1 + if (userData[offset + 2] & 0x04) { + data.ccData = userData[offset + 3] << 8 | userData[offset + 4]; + results.push(data); + } + } + return results; + }; + + var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) { + var length = data.byteLength, + emulationPreventionBytesPositions = [], + i = 1, + newLength, + newData; + + // Find all `Emulation Prevention Bytes` + while (i < length - 2) { + if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) { + emulationPreventionBytesPositions.push(i + 2); + i += 2; + } else { + i++; + } + } + + // If no Emulation Prevention Bytes were found just return the original + // array + if (emulationPreventionBytesPositions.length === 0) { + return data; + } + + // Create a new array to hold the NAL unit data + newLength = length - emulationPreventionBytesPositions.length; + newData = new Uint8Array(newLength); + var sourceIndex = 0; + + for (i = 0; i < newLength; sourceIndex++, i++) { + if (sourceIndex === emulationPreventionBytesPositions[0]) { + // Skip this byte + sourceIndex++; + // Remove this position index + emulationPreventionBytesPositions.shift(); + } + newData[i] = data[sourceIndex]; + } + + return newData; + }; + + // exports + var captionPacketParser = { + parseSei: parseSei, + parseUserData: parseUserData, + parseCaptionPackets: parseCaptionPackets, + discardEmulationPreventionBytes: discardEmulationPreventionBytes, + USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35 + }; + var captionPacketParser_1 = captionPacketParser.parseSei; + var captionPacketParser_2 = captionPacketParser.parseUserData; + var captionPacketParser_3 = captionPacketParser.parseCaptionPackets; + var captionPacketParser_4 = captionPacketParser.discardEmulationPreventionBytes; + var captionPacketParser_5 = captionPacketParser.USER_DATA_REGISTERED_ITU_T_T35; + + var captionPacketParser$1 = /*#__PURE__*/Object.freeze({ + default: captionPacketParser, + __moduleExports: captionPacketParser, + parseSei: captionPacketParser_1, + parseUserData: captionPacketParser_2, + parseCaptionPackets: captionPacketParser_3, + discardEmulationPreventionBytes: captionPacketParser_4, + USER_DATA_REGISTERED_ITU_T_T35: captionPacketParser_5 + }); + + var Stream$2 = ( stream$1 && stream ) || stream$1; + + var cea708Parser = ( captionPacketParser$1 && captionPacketParser ) || captionPacketParser$1; + + // ----------------- + // Link To Transport + // ----------------- + + + var CaptionStream = function CaptionStream() { + + CaptionStream.prototype.init.call(this); + + this.captionPackets_ = []; + + this.ccStreams_ = [new Cea608Stream(0, 0), // eslint-disable-line no-use-before-define + new Cea608Stream(0, 1), // eslint-disable-line no-use-before-define + new Cea608Stream(1, 0), // eslint-disable-line no-use-before-define + new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define + ]; + + this.reset(); + + // forward data and done events from CCs to this CaptionStream + this.ccStreams_.forEach(function (cc) { + cc.on('data', this.trigger.bind(this, 'data')); + cc.on('done', this.trigger.bind(this, 'done')); + }, this); + }; + + CaptionStream.prototype = new Stream$2(); + CaptionStream.prototype.push = function (event) { + var sei, userData, newCaptionPackets; + + // only examine SEI NALs + if (event.nalUnitType !== 'sei_rbsp') { + return; + } + + // parse the sei + sei = cea708Parser.parseSei(event.escapedRBSP); + + // ignore everything but user_data_registered_itu_t_t35 + if (sei.payloadType !== cea708Parser.USER_DATA_REGISTERED_ITU_T_T35) { + return; + } + + // parse out the user data payload + userData = cea708Parser.parseUserData(sei); + + // ignore unrecognized userData + if (!userData) { + return; + } + + // Sometimes, the same segment # will be downloaded twice. To stop the + // caption data from being processed twice, we track the latest dts we've + // received and ignore everything with a dts before that. However, since + // data for a specific dts can be split across packets on either side of + // a segment boundary, we need to make sure we *don't* ignore the packets + // from the *next* segment that have dts === this.latestDts_. By constantly + // tracking the number of packets received with dts === this.latestDts_, we + // know how many should be ignored once we start receiving duplicates. + if (event.dts < this.latestDts_) { + // We've started getting older data, so set the flag. + this.ignoreNextEqualDts_ = true; + return; + } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) { + this.numSameDts_--; + if (!this.numSameDts_) { + // We've received the last duplicate packet, time to start processing again + this.ignoreNextEqualDts_ = false; + } + return; + } + + // parse out CC data packets and save them for later + newCaptionPackets = cea708Parser.parseCaptionPackets(event.pts, userData); + this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets); + if (this.latestDts_ !== event.dts) { + this.numSameDts_ = 0; + } + this.numSameDts_++; + this.latestDts_ = event.dts; + }; + + CaptionStream.prototype.flush = function () { + // make sure we actually parsed captions before proceeding + if (!this.captionPackets_.length) { + this.ccStreams_.forEach(function (cc) { + cc.flush(); + }, this); + return; + } + + // In Chrome, the Array#sort function is not stable so add a + // presortIndex that we can use to ensure we get a stable-sort + this.captionPackets_.forEach(function (elem, idx) { + elem.presortIndex = idx; + }); + + // sort caption byte-pairs based on their PTS values + this.captionPackets_.sort(function (a, b) { + if (a.pts === b.pts) { + return a.presortIndex - b.presortIndex; + } + return a.pts - b.pts; + }); + + this.captionPackets_.forEach(function (packet) { + if (packet.type < 2) { + // Dispatch packet to the right Cea608Stream + this.dispatchCea608Packet(packet); + } + // this is where an 'else' would go for a dispatching packets + // to a theoretical Cea708Stream that handles SERVICEn data + }, this); + + this.captionPackets_.length = 0; + this.ccStreams_.forEach(function (cc) { + cc.flush(); + }, this); + return; + }; + + CaptionStream.prototype.reset = function () { + this.latestDts_ = null; + this.ignoreNextEqualDts_ = false; + this.numSameDts_ = 0; + this.activeCea608Channel_ = [null, null]; + this.ccStreams_.forEach(function (ccStream) { + ccStream.reset(); + }); + }; + + CaptionStream.prototype.dispatchCea608Packet = function (packet) { + // NOTE: packet.type is the CEA608 field + if (this.setsChannel1Active(packet)) { + this.activeCea608Channel_[packet.type] = 0; + } else if (this.setsChannel2Active(packet)) { + this.activeCea608Channel_[packet.type] = 1; + } + if (this.activeCea608Channel_[packet.type] === null) { + // If we haven't received anything to set the active channel, discard the + // data; we don't want jumbled captions + return; + } + this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet); + }; + + CaptionStream.prototype.setsChannel1Active = function (packet) { + return (packet.ccData & 0x7800) === 0x1000; + }; + CaptionStream.prototype.setsChannel2Active = function (packet) { + return (packet.ccData & 0x7800) === 0x1800; + }; + + // ---------------------- + // Session to Application + // ---------------------- + + // This hash maps non-ASCII, special, and extended character codes to their + // proper Unicode equivalent. The first keys that are only a single byte + // are the non-standard ASCII characters, which simply map the CEA608 byte + // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608 + // character codes, but have their MSB bitmasked with 0x03 so that a lookup + // can be performed regardless of the field and data channel on which the + // character code was received. + var CHARACTER_TRANSLATION = { + 0x2a: 0xe1, // á + 0x5c: 0xe9, // é + 0x5e: 0xed, // í + 0x5f: 0xf3, // ó + 0x60: 0xfa, // ú + 0x7b: 0xe7, // ç + 0x7c: 0xf7, // ÷ + 0x7d: 0xd1, // Ñ + 0x7e: 0xf1, // ñ + 0x7f: 0x2588, // █ + 0x0130: 0xae, // ® + 0x0131: 0xb0, // ° + 0x0132: 0xbd, // ½ + 0x0133: 0xbf, // ¿ + 0x0134: 0x2122, // ™ + 0x0135: 0xa2, // ¢ + 0x0136: 0xa3, // £ + 0x0137: 0x266a, // ♪ + 0x0138: 0xe0, // à + 0x0139: 0xa0, // + 0x013a: 0xe8, // è + 0x013b: 0xe2, // â + 0x013c: 0xea, // ê + 0x013d: 0xee, // î + 0x013e: 0xf4, // ô + 0x013f: 0xfb, // û + 0x0220: 0xc1, // Á + 0x0221: 0xc9, // É + 0x0222: 0xd3, // Ó + 0x0223: 0xda, // Ú + 0x0224: 0xdc, // Ü + 0x0225: 0xfc, // ü + 0x0226: 0x2018, // ‘ + 0x0227: 0xa1, // ¡ + 0x0228: 0x2a, // * + 0x0229: 0x27, // ' + 0x022a: 0x2014, // — + 0x022b: 0xa9, // © + 0x022c: 0x2120, // ℠ + 0x022d: 0x2022, // • + 0x022e: 0x201c, // “ + 0x022f: 0x201d, // ” + 0x0230: 0xc0, // À + 0x0231: 0xc2, // Â + 0x0232: 0xc7, // Ç + 0x0233: 0xc8, // È + 0x0234: 0xca, // Ê + 0x0235: 0xcb, // Ë + 0x0236: 0xeb, // ë + 0x0237: 0xce, // Î + 0x0238: 0xcf, // Ï + 0x0239: 0xef, // ï + 0x023a: 0xd4, // Ô + 0x023b: 0xd9, // Ù + 0x023c: 0xf9, // ù + 0x023d: 0xdb, // Û + 0x023e: 0xab, // « + 0x023f: 0xbb, // » + 0x0320: 0xc3, // Ã + 0x0321: 0xe3, // ã + 0x0322: 0xcd, // Í + 0x0323: 0xcc, // Ì + 0x0324: 0xec, // ì + 0x0325: 0xd2, // Ò + 0x0326: 0xf2, // ò + 0x0327: 0xd5, // Õ + 0x0328: 0xf5, // õ + 0x0329: 0x7b, // { + 0x032a: 0x7d, // } + 0x032b: 0x5c, // \ + 0x032c: 0x5e, // ^ + 0x032d: 0x5f, // _ + 0x032e: 0x7c, // | + 0x032f: 0x7e, // ~ + 0x0330: 0xc4, // Ä + 0x0331: 0xe4, // ä + 0x0332: 0xd6, // Ö + 0x0333: 0xf6, // ö + 0x0334: 0xdf, // ß + 0x0335: 0xa5, // ¥ + 0x0336: 0xa4, // ¤ + 0x0337: 0x2502, // │ + 0x0338: 0xc5, // Å + 0x0339: 0xe5, // å + 0x033a: 0xd8, // Ø + 0x033b: 0xf8, // ø + 0x033c: 0x250c, // ┌ + 0x033d: 0x2510, // ┐ + 0x033e: 0x2514, // └ + 0x033f: 0x2518 // ┘ + }; + + var getCharFromCode = function getCharFromCode(code) { + if (code === null) { + return ''; + } + code = CHARACTER_TRANSLATION[code] || code; + return String.fromCharCode(code); + }; + + // the index of the last row in a CEA-608 display buffer + var BOTTOM_ROW = 14; + + // This array is used for mapping PACs -> row #, since there's no way of + // getting it through bit logic. + var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; + + // CEA-608 captions are rendered onto a 34x15 matrix of character + // cells. The "bottom" row is the last element in the outer array. + var createDisplayBuffer = function createDisplayBuffer() { + var result = [], + i = BOTTOM_ROW + 1; + while (i--) { + result.push(''); + } + return result; + }; + + var Cea608Stream = function Cea608Stream(field, dataChannel) { + Cea608Stream.prototype.init.call(this); + + this.field_ = field || 0; + this.dataChannel_ = dataChannel || 0; + + this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1); + + this.setConstants(); + this.reset(); + + this.push = function (packet) { + var data, swap, char0, char1, text; + // remove the parity bits + data = packet.ccData & 0x7f7f; + + // ignore duplicate control codes; the spec demands they're sent twice + if (data === this.lastControlCode_) { + this.lastControlCode_ = null; + return; + } + + // Store control codes + if ((data & 0xf000) === 0x1000) { + this.lastControlCode_ = data; + } else if (data !== this.PADDING_) { + this.lastControlCode_ = null; + } + + char0 = data >>> 8; + char1 = data & 0xff; + + if (data === this.PADDING_) { + return; + } else if (data === this.RESUME_CAPTION_LOADING_) { + this.mode_ = 'popOn'; + } else if (data === this.END_OF_CAPTION_) { + // If an EOC is received while in paint-on mode, the displayed caption + // text should be swapped to non-displayed memory as if it was a pop-on + // caption. Because of that, we should explicitly switch back to pop-on + // mode + this.mode_ = 'popOn'; + this.clearFormatting(packet.pts); + // if a caption was being displayed, it's gone now + this.flushDisplayed(packet.pts); + + // flip memory + swap = this.displayed_; + this.displayed_ = this.nonDisplayed_; + this.nonDisplayed_ = swap; + + // start measuring the time to display the caption + this.startPts_ = packet.pts; + } else if (data === this.ROLL_UP_2_ROWS_) { + this.rollUpRows_ = 2; + this.setRollUp(packet.pts); + } else if (data === this.ROLL_UP_3_ROWS_) { + this.rollUpRows_ = 3; + this.setRollUp(packet.pts); + } else if (data === this.ROLL_UP_4_ROWS_) { + this.rollUpRows_ = 4; + this.setRollUp(packet.pts); + } else if (data === this.CARRIAGE_RETURN_) { + this.clearFormatting(packet.pts); + this.flushDisplayed(packet.pts); + this.shiftRowsUp_(); + this.startPts_ = packet.pts; + } else if (data === this.BACKSPACE_) { + if (this.mode_ === 'popOn') { + this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1); + } else { + this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1); + } + } else if (data === this.ERASE_DISPLAYED_MEMORY_) { + this.flushDisplayed(packet.pts); + this.displayed_ = createDisplayBuffer(); + } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) { + this.nonDisplayed_ = createDisplayBuffer(); + } else if (data === this.RESUME_DIRECT_CAPTIONING_) { + if (this.mode_ !== 'paintOn') { + // NOTE: This should be removed when proper caption positioning is + // implemented + this.flushDisplayed(packet.pts); + this.displayed_ = createDisplayBuffer(); + } + this.mode_ = 'paintOn'; + this.startPts_ = packet.pts; + + // Append special characters to caption text + } else if (this.isSpecialCharacter(char0, char1)) { + // Bitmask char0 so that we can apply character transformations + // regardless of field and data channel. + // Then byte-shift to the left and OR with char1 so we can pass the + // entire character code to `getCharFromCode`. + char0 = (char0 & 0x03) << 8; + text = getCharFromCode(char0 | char1); + this[this.mode_](packet.pts, text); + this.column_++; + + // Append extended characters to caption text + } else if (this.isExtCharacter(char0, char1)) { + // Extended characters always follow their "non-extended" equivalents. + // IE if a "è" is desired, you'll always receive "eè"; non-compliant + // decoders are supposed to drop the "è", while compliant decoders + // backspace the "e" and insert "è". + + // Delete the previous character + if (this.mode_ === 'popOn') { + this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1); + } else { + this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1); + } + + // Bitmask char0 so that we can apply character transformations + // regardless of field and data channel. + // Then byte-shift to the left and OR with char1 so we can pass the + // entire character code to `getCharFromCode`. + char0 = (char0 & 0x03) << 8; + text = getCharFromCode(char0 | char1); + this[this.mode_](packet.pts, text); + this.column_++; + + // Process mid-row codes + } else if (this.isMidRowCode(char0, char1)) { + // Attributes are not additive, so clear all formatting + this.clearFormatting(packet.pts); + + // According to the standard, mid-row codes + // should be replaced with spaces, so add one now + this[this.mode_](packet.pts, ' '); + this.column_++; + + if ((char1 & 0xe) === 0xe) { + this.addFormatting(packet.pts, ['i']); + } + + if ((char1 & 0x1) === 0x1) { + this.addFormatting(packet.pts, ['u']); + } + + // Detect offset control codes and adjust cursor + } else if (this.isOffsetControlCode(char0, char1)) { + // Cursor position is set by indent PAC (see below) in 4-column + // increments, with an additional offset code of 1-3 to reach any + // of the 32 columns specified by CEA-608. So all we need to do + // here is increment the column cursor by the given offset. + this.column_ += char1 & 0x03; + + // Detect PACs (Preamble Address Codes) + } else if (this.isPAC(char0, char1)) { + + // There's no logic for PAC -> row mapping, so we have to just + // find the row code in an array and use its index :( + var row = ROWS.indexOf(data & 0x1f20); + + // Configure the caption window if we're in roll-up mode + if (this.mode_ === 'rollUp') { + this.setRollUp(packet.pts, row); + } + + if (row !== this.row_) { + // formatting is only persistent for current row + this.clearFormatting(packet.pts); + this.row_ = row; + } + // All PACs can apply underline, so detect and apply + // (All odd-numbered second bytes set underline) + if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) { + this.addFormatting(packet.pts, ['u']); + } + + if ((data & 0x10) === 0x10) { + // We've got an indent level code. Each successive even number + // increments the column cursor by 4, so we can get the desired + // column position by bit-shifting to the right (to get n/2) + // and multiplying by 4. + this.column_ = ((data & 0xe) >> 1) * 4; + } + + if (this.isColorPAC(char1)) { + // it's a color code, though we only support white, which + // can be either normal or italicized. white italics can be + // either 0x4e or 0x6e depending on the row, so we just + // bitwise-and with 0xe to see if italics should be turned on + if ((char1 & 0xe) === 0xe) { + this.addFormatting(packet.pts, ['i']); + } + } + + // We have a normal character in char0, and possibly one in char1 + } else if (this.isNormalChar(char0)) { + if (char1 === 0x00) { + char1 = null; + } + text = getCharFromCode(char0); + text += getCharFromCode(char1); + this[this.mode_](packet.pts, text); + this.column_ += text.length; + } // finish data processing + }; + }; + Cea608Stream.prototype = new Stream$2(); + // Trigger a cue point that captures the current state of the + // display buffer + Cea608Stream.prototype.flushDisplayed = function (pts) { + var content = this.displayed_ + // remove spaces from the start and end of the string + .map(function (row) { + return row.trim(); + }) + // combine all text rows to display in one cue + .join('\n') + // and remove blank rows from the start and end, but not the middle + .replace(/^\n+|\n+$/g, ''); + + if (content.length) { + this.trigger('data', { + startPts: this.startPts_, + endPts: pts, + text: content, + stream: this.name_ + }); + } + }; + + /** + * Zero out the data, used for startup and on seek + */ + Cea608Stream.prototype.reset = function () { + this.mode_ = 'popOn'; + // When in roll-up mode, the index of the last row that will + // actually display captions. If a caption is shifted to a row + // with a lower index than this, it is cleared from the display + // buffer + this.topRow_ = 0; + this.startPts_ = 0; + this.displayed_ = createDisplayBuffer(); + this.nonDisplayed_ = createDisplayBuffer(); + this.lastControlCode_ = null; + + // Track row and column for proper line-breaking and spacing + this.column_ = 0; + this.row_ = BOTTOM_ROW; + this.rollUpRows_ = 2; + + // This variable holds currently-applied formatting + this.formatting_ = []; + }; + + /** + * Sets up control code and related constants for this instance + */ + Cea608Stream.prototype.setConstants = function () { + // The following attributes have these uses: + // ext_ : char0 for mid-row codes, and the base for extended + // chars (ext_+0, ext_+1, and ext_+2 are char0s for + // extended codes) + // control_: char0 for control codes, except byte-shifted to the + // left so that we can do this.control_ | CONTROL_CODE + // offset_: char0 for tab offset codes + // + // It's also worth noting that control codes, and _only_ control codes, + // differ between field 1 and field2. Field 2 control codes are always + // their field 1 value plus 1. That's why there's the "| field" on the + // control value. + if (this.dataChannel_ === 0) { + this.BASE_ = 0x10; + this.EXT_ = 0x11; + this.CONTROL_ = (0x14 | this.field_) << 8; + this.OFFSET_ = 0x17; + } else if (this.dataChannel_ === 1) { + this.BASE_ = 0x18; + this.EXT_ = 0x19; + this.CONTROL_ = (0x1c | this.field_) << 8; + this.OFFSET_ = 0x1f; + } + + // Constants for the LSByte command codes recognized by Cea608Stream. This + // list is not exhaustive. For a more comprehensive listing and semantics see + // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf + // Padding + this.PADDING_ = 0x0000; + // Pop-on Mode + this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20; + this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; + // Roll-up Mode + this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25; + this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26; + this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27; + this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; + // paint-on mode + this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; + // Erasure + this.BACKSPACE_ = this.CONTROL_ | 0x21; + this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c; + this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e; + }; + + /** + * Detects if the 2-byte packet data is a special character + * + * Special characters have a second byte in the range 0x30 to 0x3f, + * with the first byte being 0x11 (for data channel 1) or 0x19 (for + * data channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are an special character + */ + Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) { + return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f; + }; + + /** + * Detects if the 2-byte packet data is an extended character + * + * Extended characters have a second byte in the range 0x20 to 0x3f, + * with the first byte being 0x12 or 0x13 (for data channel 1) or + * 0x1a or 0x1b (for data channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are an extended character + */ + Cea608Stream.prototype.isExtCharacter = function (char0, char1) { + return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f; + }; + + /** + * Detects if the 2-byte packet is a mid-row code + * + * Mid-row codes have a second byte in the range 0x20 to 0x2f, with + * the first byte being 0x11 (for data channel 1) or 0x19 (for data + * channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are a mid-row code + */ + Cea608Stream.prototype.isMidRowCode = function (char0, char1) { + return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f; + }; + + /** + * Detects if the 2-byte packet is an offset control code + * + * Offset control codes have a second byte in the range 0x21 to 0x23, + * with the first byte being 0x17 (for data channel 1) or 0x1f (for + * data channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are an offset control code + */ + Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) { + return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23; + }; + + /** + * Detects if the 2-byte packet is a Preamble Address Code + * + * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1) + * or 0x18 to 0x1f (for data channel 2), with the second byte in the + * range 0x40 to 0x7f. + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are a PAC + */ + Cea608Stream.prototype.isPAC = function (char0, char1) { + return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f; + }; + + /** + * Detects if a packet's second byte is in the range of a PAC color code + * + * PAC color codes have the second byte be in the range 0x40 to 0x4f, or + * 0x60 to 0x6f. + * + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the byte is a color PAC + */ + Cea608Stream.prototype.isColorPAC = function (char1) { + return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f; + }; + + /** + * Detects if a single byte is in the range of a normal character + * + * Normal text bytes are in the range 0x20 to 0x7f. + * + * @param {Integer} char The byte + * @return {Boolean} Whether the byte is a normal character + */ + Cea608Stream.prototype.isNormalChar = function (char) { + return char >= 0x20 && char <= 0x7f; + }; + + /** + * Configures roll-up + * + * @param {Integer} pts Current PTS + * @param {Integer} newBaseRow Used by PACs to slide the current window to + * a new position + */ + Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) { + // Reset the base row to the bottom row when switching modes + if (this.mode_ !== 'rollUp') { + this.row_ = BOTTOM_ROW; + this.mode_ = 'rollUp'; + // Spec says to wipe memories when switching to roll-up + this.flushDisplayed(pts); + this.nonDisplayed_ = createDisplayBuffer(); + this.displayed_ = createDisplayBuffer(); + } + + if (newBaseRow !== undefined && newBaseRow !== this.row_) { + // move currently displayed captions (up or down) to the new base row + for (var i = 0; i < this.rollUpRows_; i++) { + this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i]; + this.displayed_[this.row_ - i] = ''; + } + } + + if (newBaseRow === undefined) { + newBaseRow = this.row_; + } + this.topRow_ = newBaseRow - this.rollUpRows_ + 1; + }; + + // Adds the opening HTML tag for the passed character to the caption text, + // and keeps track of it for later closing + Cea608Stream.prototype.addFormatting = function (pts, format) { + this.formatting_ = this.formatting_.concat(format); + var text = format.reduce(function (text, format) { + return text + '<' + format + '>'; + }, ''); + this[this.mode_](pts, text); + }; + + // Adds HTML closing tags for current formatting to caption text and + // clears remembered formatting + Cea608Stream.prototype.clearFormatting = function (pts) { + if (!this.formatting_.length) { + return; + } + var text = this.formatting_.reverse().reduce(function (text, format) { + return text + '</' + format + '>'; + }, ''); + this.formatting_ = []; + this[this.mode_](pts, text); + }; + + // Mode Implementations + Cea608Stream.prototype.popOn = function (pts, text) { + var baseRow = this.nonDisplayed_[this.row_]; + + // buffer characters + baseRow += text; + this.nonDisplayed_[this.row_] = baseRow; + }; + + Cea608Stream.prototype.rollUp = function (pts, text) { + var baseRow = this.displayed_[this.row_]; + + baseRow += text; + this.displayed_[this.row_] = baseRow; + }; + + Cea608Stream.prototype.shiftRowsUp_ = function () { + var i; + // clear out inactive rows + for (i = 0; i < this.topRow_; i++) { + this.displayed_[i] = ''; + } + for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) { + this.displayed_[i] = ''; + } + // shift displayed rows up + for (i = this.topRow_; i < this.row_; i++) { + this.displayed_[i] = this.displayed_[i + 1]; + } + // clear out the bottom row + this.displayed_[this.row_] = ''; + }; + + Cea608Stream.prototype.paintOn = function (pts, text) { + var baseRow = this.displayed_[this.row_]; + + baseRow += text; + this.displayed_[this.row_] = baseRow; + }; + + // exports + var captionStream = { + CaptionStream: CaptionStream, + Cea608Stream: Cea608Stream + }; + var captionStream_1 = captionStream.CaptionStream; + var captionStream_2 = captionStream.Cea608Stream; + + var captionStream$1 = /*#__PURE__*/Object.freeze({ + default: captionStream, + __moduleExports: captionStream, + CaptionStream: captionStream_1, + Cea608Stream: captionStream_2 + }); + + var streamTypes = { + H264_STREAM_TYPE: 0x1B, + ADTS_STREAM_TYPE: 0x0F, + METADATA_STREAM_TYPE: 0x15 + }; + var streamTypes_1 = streamTypes.H264_STREAM_TYPE; + var streamTypes_2 = streamTypes.ADTS_STREAM_TYPE; + var streamTypes_3 = streamTypes.METADATA_STREAM_TYPE; + + var streamTypes$1 = /*#__PURE__*/Object.freeze({ + default: streamTypes, + __moduleExports: streamTypes, + H264_STREAM_TYPE: streamTypes_1, + ADTS_STREAM_TYPE: streamTypes_2, + METADATA_STREAM_TYPE: streamTypes_3 + }); + + var MAX_TS = 8589934592; + + var RO_THRESH = 4294967296; + + var handleRollover = function handleRollover(value, reference) { + var direction = 1; + + if (value > reference) { + // If the current timestamp value is greater than our reference timestamp and we detect a + // timestamp rollover, this means the roll over is happening in the opposite direction. + // Example scenario: Enter a long stream/video just after a rollover occurred. The reference + // point will be set to a small number, e.g. 1. The user then seeks backwards over the + // rollover point. In loading this segment, the timestamp values will be very large, + // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust + // the time stamp to be `value - 2^33`. + direction = -1; + } + + // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will + // cause an incorrect adjustment. + while (Math.abs(reference - value) > RO_THRESH) { + value += direction * MAX_TS; + } + + return value; + }; + + var TimestampRolloverStream = function TimestampRolloverStream(type) { + var lastDTS, referenceDTS; + + TimestampRolloverStream.prototype.init.call(this); + + this.type_ = type; + + this.push = function (data) { + if (data.type !== this.type_) { + return; + } + + if (referenceDTS === undefined) { + referenceDTS = data.dts; + } + + data.dts = handleRollover(data.dts, referenceDTS); + data.pts = handleRollover(data.pts, referenceDTS); + + lastDTS = data.dts; + + this.trigger('data', data); + }; + + this.flush = function () { + referenceDTS = lastDTS; + this.trigger('done'); + }; + + this.discontinuity = function () { + referenceDTS = void 0; + lastDTS = void 0; + }; + }; + + TimestampRolloverStream.prototype = new Stream$2(); + + var timestampRolloverStream = { + TimestampRolloverStream: TimestampRolloverStream, + handleRollover: handleRollover + }; + var timestampRolloverStream_1 = timestampRolloverStream.TimestampRolloverStream; + var timestampRolloverStream_2 = timestampRolloverStream.handleRollover; + + var timestampRolloverStream$1 = /*#__PURE__*/Object.freeze({ + default: timestampRolloverStream, + __moduleExports: timestampRolloverStream, + TimestampRolloverStream: timestampRolloverStream_1, + handleRollover: timestampRolloverStream_2 + }); + + var StreamTypes = ( streamTypes$1 && streamTypes ) || streamTypes$1; + + var percentEncode = function percentEncode(bytes, start, end) { + var i, + result = ''; + for (i = start; i < end; i++) { + result += '%' + ('00' + bytes[i].toString(16)).slice(-2); + } + return result; + }, + + // return the string representation of the specified byte range, + // interpreted as UTf-8. + parseUtf8 = function parseUtf8(bytes, start, end) { + return decodeURIComponent(percentEncode(bytes, start, end)); + }, + + // return the string representation of the specified byte range, + // interpreted as ISO-8859-1. + parseIso88591 = function parseIso88591(bytes, start, end) { + return unescape(percentEncode(bytes, start, end)); // jshint ignore:line + }, + parseSyncSafeInteger = function parseSyncSafeInteger(data) { + return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3]; + }, + tagParsers = { + TXXX: function TXXX(tag) { + var i; + if (tag.data[0] !== 3) { + // ignore frames with unrecognized character encodings + return; + } + + for (i = 1; i < tag.data.length; i++) { + if (tag.data[i] === 0) { + // parse the text fields + tag.description = parseUtf8(tag.data, 1, i); + // do not include the null terminator in the tag value + tag.value = parseUtf8(tag.data, i + 1, tag.data.length).replace(/\0*$/, ''); + break; + } + } + tag.data = tag.value; + }, + WXXX: function WXXX(tag) { + var i; + if (tag.data[0] !== 3) { + // ignore frames with unrecognized character encodings + return; + } + + for (i = 1; i < tag.data.length; i++) { + if (tag.data[i] === 0) { + // parse the description and URL fields + tag.description = parseUtf8(tag.data, 1, i); + tag.url = parseUtf8(tag.data, i + 1, tag.data.length); + break; + } + } + }, + PRIV: function PRIV(tag) { + var i; + + for (i = 0; i < tag.data.length; i++) { + if (tag.data[i] === 0) { + // parse the description and URL fields + tag.owner = parseIso88591(tag.data, 0, i); + break; + } + } + tag.privateData = tag.data.subarray(i + 1); + tag.data = tag.privateData; + } + }, + _MetadataStream; + + _MetadataStream = function MetadataStream(options) { + var settings = { + debug: !!(options && options.debug), + + // the bytes of the program-level descriptor field in MP2T + // see ISO/IEC 13818-1:2013 (E), section 2.6 "Program and + // program element descriptors" + descriptor: options && options.descriptor + }, + + // the total size in bytes of the ID3 tag being parsed + tagSize = 0, + + // tag data that is not complete enough to be parsed + buffer = [], + + // the total number of bytes currently in the buffer + bufferSize = 0, + i; + + _MetadataStream.prototype.init.call(this); + + // calculate the text track in-band metadata track dispatch type + // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track + this.dispatchType = StreamTypes.METADATA_STREAM_TYPE.toString(16); + if (settings.descriptor) { + for (i = 0; i < settings.descriptor.length; i++) { + this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2); + } + } + + this.push = function (chunk) { + var tag, frameStart, frameSize, frame, i, frameHeader; + if (chunk.type !== 'timed-metadata') { + return; + } + + // if data_alignment_indicator is set in the PES header, + // we must have the start of a new ID3 tag. Assume anything + // remaining in the buffer was malformed and throw it out + if (chunk.dataAlignmentIndicator) { + bufferSize = 0; + buffer.length = 0; + } + + // ignore events that don't look like ID3 data + if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) { + if (settings.debug) { + // eslint-disable-next-line no-console + console.log('Skipping unrecognized metadata packet'); + } + return; + } + + // add this chunk to the data we've collected so far + + buffer.push(chunk); + bufferSize += chunk.data.byteLength; + + // grab the size of the entire frame from the ID3 header + if (buffer.length === 1) { + // the frame size is transmitted as a 28-bit integer in the + // last four bytes of the ID3 header. + // The most significant bit of each byte is dropped and the + // results concatenated to recover the actual value. + tagSize = parseSyncSafeInteger(chunk.data.subarray(6, 10)); + + // ID3 reports the tag size excluding the header but it's more + // convenient for our comparisons to include it + tagSize += 10; + } + + // if the entire frame has not arrived, wait for more data + if (bufferSize < tagSize) { + return; + } + + // collect the entire frame so it can be parsed + tag = { + data: new Uint8Array(tagSize), + frames: [], + pts: buffer[0].pts, + dts: buffer[0].dts + }; + for (i = 0; i < tagSize;) { + tag.data.set(buffer[0].data.subarray(0, tagSize - i), i); + i += buffer[0].data.byteLength; + bufferSize -= buffer[0].data.byteLength; + buffer.shift(); + } + + // find the start of the first frame and the end of the tag + frameStart = 10; + if (tag.data[5] & 0x40) { + // advance the frame start past the extended header + frameStart += 4; // header size field + frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14)); + + // clip any padding off the end + tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20)); + } + + // parse one or more ID3 frames + // http://id3.org/id3v2.3.0#ID3v2_frame_overview + do { + // determine the number of bytes in this frame + frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8)); + if (frameSize < 1) { + // eslint-disable-next-line no-console + return console.log('Malformed ID3 frame encountered. Skipping metadata parsing.'); + } + frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]); + + frame = { + id: frameHeader, + data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10) + }; + frame.key = frame.id; + if (tagParsers[frame.id]) { + tagParsers[frame.id](frame); + + // handle the special PRIV frame used to indicate the start + // time for raw AAC data + if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') { + var d = frame.data, + size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2; + + size *= 4; + size += d[7] & 0x03; + frame.timeStamp = size; + // in raw AAC, all subsequent data will be timestamped based + // on the value of this frame + // we couldn't have known the appropriate pts and dts before + // parsing this ID3 tag so set those values now + if (tag.pts === undefined && tag.dts === undefined) { + tag.pts = frame.timeStamp; + tag.dts = frame.timeStamp; + } + this.trigger('timestamp', frame); + } + } + tag.frames.push(frame); + + frameStart += 10; // advance past the frame header + frameStart += frameSize; // advance past the frame body + } while (frameStart < tagSize); + this.trigger('data', tag); + }; + }; + _MetadataStream.prototype = new Stream$2(); + + var metadataStream = _MetadataStream; + + var metadataStream$1 = /*#__PURE__*/Object.freeze({ + default: metadataStream, + __moduleExports: metadataStream + }); + + var CaptionStream$1 = ( captionStream$1 && captionStream ) || captionStream$1; + + var require$$0$2 = ( timestampRolloverStream$1 && timestampRolloverStream ) || timestampRolloverStream$1; + + var require$$1$1 = ( metadataStream$1 && metadataStream ) || metadataStream$1; + + var TimestampRolloverStream$1 = require$$0$2.TimestampRolloverStream; + + // object types + var _TransportPacketStream, _TransportParseStream, _ElementaryStream; + + // constants + var MP2T_PACKET_LENGTH = 188, + // bytes + SYNC_BYTE = 0x47; + + /** + * Splits an incoming stream of binary data into MPEG-2 Transport + * Stream packets. + */ + _TransportPacketStream = function TransportPacketStream() { + var buffer = new Uint8Array(MP2T_PACKET_LENGTH), + bytesInBuffer = 0; + + _TransportPacketStream.prototype.init.call(this); + + // Deliver new bytes to the stream. + + /** + * Split a stream of data into M2TS packets + **/ + this.push = function (bytes) { + var startIndex = 0, + endIndex = MP2T_PACKET_LENGTH, + everything; + + // If there are bytes remaining from the last segment, prepend them to the + // bytes that were pushed in + if (bytesInBuffer) { + everything = new Uint8Array(bytes.byteLength + bytesInBuffer); + everything.set(buffer.subarray(0, bytesInBuffer)); + everything.set(bytes, bytesInBuffer); + bytesInBuffer = 0; + } else { + everything = bytes; + } + + // While we have enough data for a packet + while (endIndex < everything.byteLength) { + // Look for a pair of start and end sync bytes in the data.. + if (everything[startIndex] === SYNC_BYTE && everything[endIndex] === SYNC_BYTE) { + // We found a packet so emit it and jump one whole packet forward in + // the stream + this.trigger('data', everything.subarray(startIndex, endIndex)); + startIndex += MP2T_PACKET_LENGTH; + endIndex += MP2T_PACKET_LENGTH; + continue; + } + // If we get here, we have somehow become de-synchronized and we need to step + // forward one byte at a time until we find a pair of sync bytes that denote + // a packet + startIndex++; + endIndex++; + } + + // If there was some data left over at the end of the segment that couldn't + // possibly be a whole packet, keep it because it might be the start of a packet + // that continues in the next segment + if (startIndex < everything.byteLength) { + buffer.set(everything.subarray(startIndex), 0); + bytesInBuffer = everything.byteLength - startIndex; + } + }; + + /** + * Passes identified M2TS packets to the TransportParseStream to be parsed + **/ + this.flush = function () { + // If the buffer contains a whole packet when we are being flushed, emit it + // and empty the buffer. Otherwise hold onto the data because it may be + // important for decoding the next segment + if (bytesInBuffer === MP2T_PACKET_LENGTH && buffer[0] === SYNC_BYTE) { + this.trigger('data', buffer); + bytesInBuffer = 0; + } + this.trigger('done'); + }; + }; + _TransportPacketStream.prototype = new Stream$2(); + + /** + * Accepts an MP2T TransportPacketStream and emits data events with parsed + * forms of the individual transport stream packets. + */ + _TransportParseStream = function TransportParseStream() { + var parsePsi, parsePat, parsePmt, self; + _TransportParseStream.prototype.init.call(this); + self = this; + + this.packetsWaitingForPmt = []; + this.programMapTable = undefined; + + parsePsi = function parsePsi(payload, psi) { + var offset = 0; + + // PSI packets may be split into multiple sections and those + // sections may be split into multiple packets. If a PSI + // section starts in this packet, the payload_unit_start_indicator + // will be true and the first byte of the payload will indicate + // the offset from the current position to the start of the + // section. + if (psi.payloadUnitStartIndicator) { + offset += payload[offset] + 1; + } + + if (psi.type === 'pat') { + parsePat(payload.subarray(offset), psi); + } else { + parsePmt(payload.subarray(offset), psi); + } + }; + + parsePat = function parsePat(payload, pat) { + pat.section_number = payload[7]; // eslint-disable-line camelcase + pat.last_section_number = payload[8]; // eslint-disable-line camelcase + + // skip the PSI header and parse the first PMT entry + self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11]; + pat.pmtPid = self.pmtPid; + }; + + /** + * Parse out the relevant fields of a Program Map Table (PMT). + * @param payload {Uint8Array} the PMT-specific portion of an MP2T + * packet. The first byte in this array should be the table_id + * field. + * @param pmt {object} the object that should be decorated with + * fields parsed from the PMT. + */ + parsePmt = function parsePmt(payload, pmt) { + var sectionLength, tableEnd, programInfoLength, offset; + + // PMTs can be sent ahead of the time when they should actually + // take effect. We don't believe this should ever be the case + // for HLS but we'll ignore "forward" PMT declarations if we see + // them. Future PMT declarations have the current_next_indicator + // set to zero. + if (!(payload[5] & 0x01)) { + return; + } + + // overwrite any existing program map table + self.programMapTable = { + video: null, + audio: null, + 'timed-metadata': {} + }; + + // the mapping table ends at the end of the current section + sectionLength = (payload[1] & 0x0f) << 8 | payload[2]; + tableEnd = 3 + sectionLength - 4; + + // to determine where the table is, we have to figure out how + // long the program info descriptors are + programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; + + // advance the offset to the first entry in the mapping table + offset = 12 + programInfoLength; + while (offset < tableEnd) { + var streamType = payload[offset]; + var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; + + // only map a single elementary_pid for audio and video stream types + // TODO: should this be done for metadata too? for now maintain behavior of + // multiple metadata streams + if (streamType === StreamTypes.H264_STREAM_TYPE && self.programMapTable.video === null) { + self.programMapTable.video = pid; + } else if (streamType === StreamTypes.ADTS_STREAM_TYPE && self.programMapTable.audio === null) { + self.programMapTable.audio = pid; + } else if (streamType === StreamTypes.METADATA_STREAM_TYPE) { + // map pid to stream type for metadata streams + self.programMapTable['timed-metadata'][pid] = streamType; + } + + // move to the next table entry + // skip past the elementary stream descriptors, if present + offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5; + } + + // record the map on the packet as well + pmt.programMapTable = self.programMapTable; + }; + + /** + * Deliver a new MP2T packet to the next stream in the pipeline. + */ + this.push = function (packet) { + var result = {}, + offset = 4; + + result.payloadUnitStartIndicator = !!(packet[1] & 0x40); + + // pid is a 13-bit field starting at the last bit of packet[1] + result.pid = packet[1] & 0x1f; + result.pid <<= 8; + result.pid |= packet[2]; + + // if an adaption field is present, its length is specified by the + // fifth byte of the TS packet header. The adaptation field is + // used to add stuffing to PES packets that don't fill a complete + // TS packet, and to specify some forms of timing and control data + // that we do not currently use. + if ((packet[3] & 0x30) >>> 4 > 0x01) { + offset += packet[offset] + 1; + } + + // parse the rest of the packet based on the type + if (result.pid === 0) { + result.type = 'pat'; + parsePsi(packet.subarray(offset), result); + this.trigger('data', result); + } else if (result.pid === this.pmtPid) { + result.type = 'pmt'; + parsePsi(packet.subarray(offset), result); + this.trigger('data', result); + + // if there are any packets waiting for a PMT to be found, process them now + while (this.packetsWaitingForPmt.length) { + this.processPes_.apply(this, this.packetsWaitingForPmt.shift()); + } + } else if (this.programMapTable === undefined) { + // When we have not seen a PMT yet, defer further processing of + // PES packets until one has been parsed + this.packetsWaitingForPmt.push([packet, offset, result]); + } else { + this.processPes_(packet, offset, result); + } + }; + + this.processPes_ = function (packet, offset, result) { + // set the appropriate stream type + if (result.pid === this.programMapTable.video) { + result.streamType = StreamTypes.H264_STREAM_TYPE; + } else if (result.pid === this.programMapTable.audio) { + result.streamType = StreamTypes.ADTS_STREAM_TYPE; + } else { + // if not video or audio, it is timed-metadata or unknown + // if unknown, streamType will be undefined + result.streamType = this.programMapTable['timed-metadata'][result.pid]; + } + + result.type = 'pes'; + result.data = packet.subarray(offset); + + this.trigger('data', result); + }; + }; + _TransportParseStream.prototype = new Stream$2(); + _TransportParseStream.STREAM_TYPES = { + h264: 0x1b, + adts: 0x0f + }; + + /** + * Reconsistutes program elementary stream (PES) packets from parsed + * transport stream packets. That is, if you pipe an + * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output + * events will be events which capture the bytes for individual PES + * packets plus relevant metadata that has been extracted from the + * container. + */ + _ElementaryStream = function ElementaryStream() { + var self = this, + + // PES packet fragments + video = { + data: [], + size: 0 + }, + audio = { + data: [], + size: 0 + }, + timedMetadata = { + data: [], + size: 0 + }, + parsePes = function parsePes(payload, pes) { + var ptsDtsFlags; + + // get the packet length, this will be 0 for video + pes.packetLength = 6 + (payload[4] << 8 | payload[5]); + + // find out if this packets starts a new keyframe + pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; + // PES packets may be annotated with a PTS value, or a PTS value + // and a DTS value. Determine what combination of values is + // available to work with. + ptsDtsFlags = payload[7]; + + // PTS and DTS are normally stored as a 33-bit number. Javascript + // performs all bitwise operations on 32-bit integers but javascript + // supports a much greater range (52-bits) of integer using standard + // mathematical operations. + // We construct a 31-bit value using bitwise operators over the 31 + // most significant bits and then multiply by 4 (equal to a left-shift + // of 2) before we add the final 2 least significant bits of the + // timestamp (equal to an OR.) + if (ptsDtsFlags & 0xC0) { + // the PTS and DTS are not written out directly. For information + // on how they are encoded, see + // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html + pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3; + pes.pts *= 4; // Left shift by 2 + pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs + pes.dts = pes.pts; + if (ptsDtsFlags & 0x40) { + pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3; + pes.dts *= 4; // Left shift by 2 + pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs + } + } + // the data section starts immediately after the PES header. + // pes_header_data_length specifies the number of header bytes + // that follow the last byte of the field. + pes.data = payload.subarray(9 + payload[8]); + }, + + /** + * Pass completely parsed PES packets to the next stream in the pipeline + **/ + flushStream = function flushStream(stream, type, forceFlush) { + var packetData = new Uint8Array(stream.size), + event = { + type: type + }, + i = 0, + offset = 0, + packetFlushable = false, + fragment; + + // do nothing if there is not enough buffered data for a complete + // PES header + if (!stream.data.length || stream.size < 9) { + return; + } + event.trackId = stream.data[0].pid; + + // reassemble the packet + for (i = 0; i < stream.data.length; i++) { + fragment = stream.data[i]; + + packetData.set(fragment.data, offset); + offset += fragment.data.byteLength; + } + + // parse assembled packet's PES header + parsePes(packetData, event); + + // non-video PES packets MUST have a non-zero PES_packet_length + // check that there is enough stream data to fill the packet + packetFlushable = type === 'video' || event.packetLength <= stream.size; + + // flush pending packets if the conditions are right + if (forceFlush || packetFlushable) { + stream.size = 0; + stream.data.length = 0; + } + + // only emit packets that are complete. this is to avoid assembling + // incomplete PES packets due to poor segmentation + if (packetFlushable) { + self.trigger('data', event); + } + }; + + _ElementaryStream.prototype.init.call(this); + + /** + * Identifies M2TS packet types and parses PES packets using metadata + * parsed from the PMT + **/ + this.push = function (data) { + ({ + pat: function pat() { + // we have to wait for the PMT to arrive as well before we + // have any meaningful metadata + }, + pes: function pes() { + var stream, streamType; + + switch (data.streamType) { + case StreamTypes.H264_STREAM_TYPE: + case StreamTypes.H264_STREAM_TYPE: + stream = video; + streamType = 'video'; + break; + case StreamTypes.ADTS_STREAM_TYPE: + stream = audio; + streamType = 'audio'; + break; + case StreamTypes.METADATA_STREAM_TYPE: + stream = timedMetadata; + streamType = 'timed-metadata'; + break; + default: + // ignore unknown stream types + return; + } + + // if a new packet is starting, we can flush the completed + // packet + if (data.payloadUnitStartIndicator) { + flushStream(stream, streamType, true); + } + + // buffer this fragment until we are sure we've received the + // complete payload + stream.data.push(data); + stream.size += data.data.byteLength; + }, + pmt: function pmt() { + var event = { + type: 'metadata', + tracks: [] + }, + programMapTable = data.programMapTable; + + // translate audio and video streams to tracks + if (programMapTable.video !== null) { + event.tracks.push({ + timelineStartInfo: { + baseMediaDecodeTime: 0 + }, + id: +programMapTable.video, + codec: 'avc', + type: 'video' + }); + } + if (programMapTable.audio !== null) { + event.tracks.push({ + timelineStartInfo: { + baseMediaDecodeTime: 0 + }, + id: +programMapTable.audio, + codec: 'adts', + type: 'audio' + }); + } + + self.trigger('data', event); + } + })[data.type](); + }; + + /** + * Flush any remaining input. Video PES packets may be of variable + * length. Normally, the start of a new video packet can trigger the + * finalization of the previous packet. That is not possible if no + * more video is forthcoming, however. In that case, some other + * mechanism (like the end of the file) has to be employed. When it is + * clear that no additional data is forthcoming, calling this method + * will flush the buffered packets. + */ + this.flush = function () { + // !!THIS ORDER IS IMPORTANT!! + // video first then audio + flushStream(video, 'video'); + flushStream(audio, 'audio'); + flushStream(timedMetadata, 'timed-metadata'); + this.trigger('done'); + }; + }; + _ElementaryStream.prototype = new Stream$2(); + + var m2ts = { + PAT_PID: 0x0000, + MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH, + TransportPacketStream: _TransportPacketStream, + TransportParseStream: _TransportParseStream, + ElementaryStream: _ElementaryStream, + TimestampRolloverStream: TimestampRolloverStream$1, + CaptionStream: CaptionStream$1.CaptionStream, + Cea608Stream: CaptionStream$1.Cea608Stream, + MetadataStream: require$$1$1 + }; + + for (var type$1 in StreamTypes) { + if (StreamTypes.hasOwnProperty(type$1)) { + m2ts[type$1] = StreamTypes[type$1]; + } + } + + var m2ts_1 = m2ts; + + var m2ts$1 = /*#__PURE__*/Object.freeze({ + default: m2ts_1, + __moduleExports: m2ts_1 + }); + + var _AdtsStream; + + var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350]; + + /* + * Accepts a ElementaryStream and emits data events with parsed + * AAC Audio Frames of the individual packets. Input audio in ADTS + * format is unpacked and re-emitted as AAC frames. + * + * @see http://wiki.multimedia.cx/index.php?title=ADTS + * @see http://wiki.multimedia.cx/?title=Understanding_AAC + */ + _AdtsStream = function AdtsStream() { + var buffer; + + _AdtsStream.prototype.init.call(this); + + this.push = function (packet) { + var i = 0, + frameNum = 0, + frameLength, + protectionSkipBytes, + frameEnd, + oldBuffer, + sampleCount, + adtsFrameDuration; + + if (packet.type !== 'audio') { + // ignore non-audio data + return; + } + + // Prepend any data in the buffer to the input data so that we can parse + // aac frames the cross a PES packet boundary + if (buffer) { + oldBuffer = buffer; + buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength); + buffer.set(oldBuffer); + buffer.set(packet.data, oldBuffer.byteLength); + } else { + buffer = packet.data; + } + + // unpack any ADTS frames which have been fully received + // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS + while (i + 5 < buffer.length) { + + // Loook for the start of an ADTS header.. + if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) { + // If a valid header was not found, jump one forward and attempt to + // find a valid ADTS header starting at the next byte + i++; + continue; + } + + // The protection skip bit tells us if we have 2 bytes of CRC data at the + // end of the ADTS header + protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; + + // Frame length is a 13 bit integer starting 16 bits from the + // end of the sync sequence + frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5; + + sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024; + adtsFrameDuration = sampleCount * 90000 / ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2]; + + frameEnd = i + frameLength; + + // If we don't have enough data to actually finish this ADTS frame, return + // and wait for more data + if (buffer.byteLength < frameEnd) { + return; + } + + // Otherwise, deliver the complete AAC frame + this.trigger('data', { + pts: packet.pts + frameNum * adtsFrameDuration, + dts: packet.dts + frameNum * adtsFrameDuration, + sampleCount: sampleCount, + audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1, + channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6, + samplerate: ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2], + samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2, + // assume ISO/IEC 14496-12 AudioSampleEntry default of 16 + samplesize: 16, + data: buffer.subarray(i + 7 + protectionSkipBytes, frameEnd) + }); + + // If the buffer is empty, clear it and return + if (buffer.byteLength === frameEnd) { + buffer = undefined; + return; + } + + frameNum++; + + // Remove the finished frame from the buffer and start the process again + buffer = buffer.subarray(frameEnd); + } + }; + this.flush = function () { + this.trigger('done'); + }; + }; + + _AdtsStream.prototype = new Stream$2(); + + var adts = _AdtsStream; + + var adts$1 = /*#__PURE__*/Object.freeze({ + default: adts, + __moduleExports: adts + }); + + var ExpGolomb; + + /** + * Parser for exponential Golomb codes, a variable-bitwidth number encoding + * scheme used by h264. + */ + ExpGolomb = function ExpGolomb(workingData) { + var + // the number of bytes left to examine in workingData + workingBytesAvailable = workingData.byteLength, + + + // the current word being examined + workingWord = 0, + // :uint + + // the number of bits left to examine in the current word + workingBitsAvailable = 0; // :uint; + + // ():uint + this.length = function () { + return 8 * workingBytesAvailable; + }; + + // ():uint + this.bitsAvailable = function () { + return 8 * workingBytesAvailable + workingBitsAvailable; + }; + + // ():void + this.loadWord = function () { + var position = workingData.byteLength - workingBytesAvailable, + workingBytes = new Uint8Array(4), + availableBytes = Math.min(4, workingBytesAvailable); + + if (availableBytes === 0) { + throw new Error('no bytes available'); + } + + workingBytes.set(workingData.subarray(position, position + availableBytes)); + workingWord = new DataView(workingBytes.buffer).getUint32(0); + + // track the amount of workingData that has been processed + workingBitsAvailable = availableBytes * 8; + workingBytesAvailable -= availableBytes; + }; + + // (count:int):void + this.skipBits = function (count) { + var skipBytes; // :int + if (workingBitsAvailable > count) { + workingWord <<= count; + workingBitsAvailable -= count; + } else { + count -= workingBitsAvailable; + skipBytes = Math.floor(count / 8); + + count -= skipBytes * 8; + workingBytesAvailable -= skipBytes; + + this.loadWord(); + + workingWord <<= count; + workingBitsAvailable -= count; + } + }; + + // (size:int):uint + this.readBits = function (size) { + var bits = Math.min(workingBitsAvailable, size), + // :uint + valu = workingWord >>> 32 - bits; // :uint + // if size > 31, handle error + workingBitsAvailable -= bits; + if (workingBitsAvailable > 0) { + workingWord <<= bits; + } else if (workingBytesAvailable > 0) { + this.loadWord(); + } + + bits = size - bits; + if (bits > 0) { + return valu << bits | this.readBits(bits); + } + return valu; + }; + + // ():uint + this.skipLeadingZeros = function () { + var leadingZeroCount; // :uint + for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) { + if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) { + // the first bit of working word is 1 + workingWord <<= leadingZeroCount; + workingBitsAvailable -= leadingZeroCount; + return leadingZeroCount; + } + } + + // we exhausted workingWord and still have not found a 1 + this.loadWord(); + return leadingZeroCount + this.skipLeadingZeros(); + }; + + // ():void + this.skipUnsignedExpGolomb = function () { + this.skipBits(1 + this.skipLeadingZeros()); + }; + + // ():void + this.skipExpGolomb = function () { + this.skipBits(1 + this.skipLeadingZeros()); + }; + + // ():uint + this.readUnsignedExpGolomb = function () { + var clz = this.skipLeadingZeros(); // :uint + return this.readBits(clz + 1) - 1; + }; + + // ():int + this.readExpGolomb = function () { + var valu = this.readUnsignedExpGolomb(); // :int + if (0x01 & valu) { + // the number is odd if the low order bit is set + return 1 + valu >>> 1; // add 1 to make it even, and divide by 2 + } + return -1 * (valu >>> 1); // divide by two then make it negative + }; + + // Some convenience functions + // :Boolean + this.readBoolean = function () { + return this.readBits(1) === 1; + }; + + // ():int + this.readUnsignedByte = function () { + return this.readBits(8); + }; + + this.loadWord(); + }; + + var expGolomb = ExpGolomb; + + var expGolomb$1 = /*#__PURE__*/Object.freeze({ + default: expGolomb, + __moduleExports: expGolomb + }); + + var ExpGolomb$1 = ( expGolomb$1 && expGolomb ) || expGolomb$1; + + var _H264Stream, _NalByteStream; + var PROFILES_WITH_OPTIONAL_SPS_DATA; + + /** + * Accepts a NAL unit byte stream and unpacks the embedded NAL units. + */ + _NalByteStream = function NalByteStream() { + var syncPoint = 0, + i, + buffer; + _NalByteStream.prototype.init.call(this); + + /* + * Scans a byte stream and triggers a data event with the NAL units found. + * @param {Object} data Event received from H264Stream + * @param {Uint8Array} data.data The h264 byte stream to be scanned + * + * @see H264Stream.push + */ + this.push = function (data) { + var swapBuffer; + + if (!buffer) { + buffer = data.data; + } else { + swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength); + swapBuffer.set(buffer); + swapBuffer.set(data.data, buffer.byteLength); + buffer = swapBuffer; + } + + // Rec. ITU-T H.264, Annex B + // scan for NAL unit boundaries + + // a match looks like this: + // 0 0 1 .. NAL .. 0 0 1 + // ^ sync point ^ i + // or this: + // 0 0 1 .. NAL .. 0 0 0 + // ^ sync point ^ i + + // advance the sync point to a NAL start, if necessary + for (; syncPoint < buffer.byteLength - 3; syncPoint++) { + if (buffer[syncPoint + 2] === 1) { + // the sync point is properly aligned + i = syncPoint + 5; + break; + } + } + + while (i < buffer.byteLength) { + // look at the current byte to determine if we've hit the end of + // a NAL unit boundary + switch (buffer[i]) { + case 0: + // skip past non-sync sequences + if (buffer[i - 1] !== 0) { + i += 2; + break; + } else if (buffer[i - 2] !== 0) { + i++; + break; + } + + // deliver the NAL unit if it isn't empty + if (syncPoint + 3 !== i - 2) { + this.trigger('data', buffer.subarray(syncPoint + 3, i - 2)); + } + + // drop trailing zeroes + do { + i++; + } while (buffer[i] !== 1 && i < buffer.length); + syncPoint = i - 2; + i += 3; + break; + case 1: + // skip past non-sync sequences + if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) { + i += 3; + break; + } + + // deliver the NAL unit + this.trigger('data', buffer.subarray(syncPoint + 3, i - 2)); + syncPoint = i - 2; + i += 3; + break; + default: + // the current byte isn't a one or zero, so it cannot be part + // of a sync sequence + i += 3; + break; + } + } + // filter out the NAL units that were delivered + buffer = buffer.subarray(syncPoint); + i -= syncPoint; + syncPoint = 0; + }; + + this.flush = function () { + // deliver the last buffered NAL unit + if (buffer && buffer.byteLength > 3) { + this.trigger('data', buffer.subarray(syncPoint + 3)); + } + // reset the stream state + buffer = null; + syncPoint = 0; + this.trigger('done'); + }; + }; + _NalByteStream.prototype = new Stream$2(); + + // values of profile_idc that indicate additional fields are included in the SPS + // see Recommendation ITU-T H.264 (4/2013), + // 7.3.2.1.1 Sequence parameter set data syntax + PROFILES_WITH_OPTIONAL_SPS_DATA = { + 100: true, + 110: true, + 122: true, + 244: true, + 44: true, + 83: true, + 86: true, + 118: true, + 128: true, + 138: true, + 139: true, + 134: true + }; + + /** + * Accepts input from a ElementaryStream and produces H.264 NAL unit data + * events. + */ + _H264Stream = function H264Stream() { + var nalByteStream = new _NalByteStream(), + self, + trackId, + currentPts, + currentDts, + discardEmulationPreventionBytes, + readSequenceParameterSet, + skipScalingList; + + _H264Stream.prototype.init.call(this); + self = this; + + /* + * Pushes a packet from a stream onto the NalByteStream + * + * @param {Object} packet - A packet received from a stream + * @param {Uint8Array} packet.data - The raw bytes of the packet + * @param {Number} packet.dts - Decode timestamp of the packet + * @param {Number} packet.pts - Presentation timestamp of the packet + * @param {Number} packet.trackId - The id of the h264 track this packet came from + * @param {('video'|'audio')} packet.type - The type of packet + * + */ + this.push = function (packet) { + if (packet.type !== 'video') { + return; + } + trackId = packet.trackId; + currentPts = packet.pts; + currentDts = packet.dts; + + nalByteStream.push(packet); + }; + + /* + * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps + * for the NALUs to the next stream component. + * Also, preprocess caption and sequence parameter NALUs. + * + * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push` + * @see NalByteStream.push + */ + nalByteStream.on('data', function (data) { + var event = { + trackId: trackId, + pts: currentPts, + dts: currentDts, + data: data + }; + + switch (data[0] & 0x1f) { + case 0x05: + event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr'; + break; + case 0x06: + event.nalUnitType = 'sei_rbsp'; + event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1)); + break; + case 0x07: + event.nalUnitType = 'seq_parameter_set_rbsp'; + event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1)); + event.config = readSequenceParameterSet(event.escapedRBSP); + break; + case 0x08: + event.nalUnitType = 'pic_parameter_set_rbsp'; + break; + case 0x09: + event.nalUnitType = 'access_unit_delimiter_rbsp'; + break; + + default: + break; + } + // This triggers data on the H264Stream + self.trigger('data', event); + }); + nalByteStream.on('done', function () { + self.trigger('done'); + }); + + this.flush = function () { + nalByteStream.flush(); + }; + + /** + * Advance the ExpGolomb decoder past a scaling list. The scaling + * list is optionally transmitted as part of a sequence parameter + * set and is not relevant to transmuxing. + * @param count {number} the number of entries in this scaling list + * @param expGolombDecoder {object} an ExpGolomb pointed to the + * start of a scaling list + * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1 + */ + skipScalingList = function skipScalingList(count, expGolombDecoder) { + var lastScale = 8, + nextScale = 8, + j, + deltaScale; + + for (j = 0; j < count; j++) { + if (nextScale !== 0) { + deltaScale = expGolombDecoder.readExpGolomb(); + nextScale = (lastScale + deltaScale + 256) % 256; + } + + lastScale = nextScale === 0 ? lastScale : nextScale; + } + }; + + /** + * Expunge any "Emulation Prevention" bytes from a "Raw Byte + * Sequence Payload" + * @param data {Uint8Array} the bytes of a RBSP from a NAL + * unit + * @return {Uint8Array} the RBSP without any Emulation + * Prevention Bytes + */ + discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) { + var length = data.byteLength, + emulationPreventionBytesPositions = [], + i = 1, + newLength, + newData; + + // Find all `Emulation Prevention Bytes` + while (i < length - 2) { + if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) { + emulationPreventionBytesPositions.push(i + 2); + i += 2; + } else { + i++; + } + } + + // If no Emulation Prevention Bytes were found just return the original + // array + if (emulationPreventionBytesPositions.length === 0) { + return data; + } + + // Create a new array to hold the NAL unit data + newLength = length - emulationPreventionBytesPositions.length; + newData = new Uint8Array(newLength); + var sourceIndex = 0; + + for (i = 0; i < newLength; sourceIndex++, i++) { + if (sourceIndex === emulationPreventionBytesPositions[0]) { + // Skip this byte + sourceIndex++; + // Remove this position index + emulationPreventionBytesPositions.shift(); + } + newData[i] = data[sourceIndex]; + } + + return newData; + }; + + /** + * Read a sequence parameter set and return some interesting video + * properties. A sequence parameter set is the H264 metadata that + * describes the properties of upcoming video frames. + * @param data {Uint8Array} the bytes of a sequence parameter set + * @return {object} an object with configuration parsed from the + * sequence parameter set, including the dimensions of the + * associated video frames. + */ + readSequenceParameterSet = function readSequenceParameterSet(data) { + var frameCropLeftOffset = 0, + frameCropRightOffset = 0, + frameCropTopOffset = 0, + frameCropBottomOffset = 0, + sarScale = 1, + expGolombDecoder, + profileIdc, + levelIdc, + profileCompatibility, + chromaFormatIdc, + picOrderCntType, + numRefFramesInPicOrderCntCycle, + picWidthInMbsMinus1, + picHeightInMapUnitsMinus1, + frameMbsOnlyFlag, + scalingListCount, + sarRatio, + aspectRatioIdc, + i; + + expGolombDecoder = new ExpGolomb$1(data); + profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc + profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag + levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8) + expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id + + // some profiles have more optional data we don't need + if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) { + chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb(); + if (chromaFormatIdc === 3) { + expGolombDecoder.skipBits(1); // separate_colour_plane_flag + } + expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8 + expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8 + expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag + if (expGolombDecoder.readBoolean()) { + // seq_scaling_matrix_present_flag + scalingListCount = chromaFormatIdc !== 3 ? 8 : 12; + for (i = 0; i < scalingListCount; i++) { + if (expGolombDecoder.readBoolean()) { + // seq_scaling_list_present_flag[ i ] + if (i < 6) { + skipScalingList(16, expGolombDecoder); + } else { + skipScalingList(64, expGolombDecoder); + } + } + } + } + } + + expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4 + picOrderCntType = expGolombDecoder.readUnsignedExpGolomb(); + + if (picOrderCntType === 0) { + expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4 + } else if (picOrderCntType === 1) { + expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag + expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic + expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field + numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb(); + for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) { + expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ] + } + } + + expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames + expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag + + picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb(); + picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb(); + + frameMbsOnlyFlag = expGolombDecoder.readBits(1); + if (frameMbsOnlyFlag === 0) { + expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag + } + + expGolombDecoder.skipBits(1); // direct_8x8_inference_flag + if (expGolombDecoder.readBoolean()) { + // frame_cropping_flag + frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb(); + frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb(); + frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb(); + frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb(); + } + if (expGolombDecoder.readBoolean()) { + // vui_parameters_present_flag + if (expGolombDecoder.readBoolean()) { + // aspect_ratio_info_present_flag + aspectRatioIdc = expGolombDecoder.readUnsignedByte(); + switch (aspectRatioIdc) { + case 1: + sarRatio = [1, 1];break; + case 2: + sarRatio = [12, 11];break; + case 3: + sarRatio = [10, 11];break; + case 4: + sarRatio = [16, 11];break; + case 5: + sarRatio = [40, 33];break; + case 6: + sarRatio = [24, 11];break; + case 7: + sarRatio = [20, 11];break; + case 8: + sarRatio = [32, 11];break; + case 9: + sarRatio = [80, 33];break; + case 10: + sarRatio = [18, 11];break; + case 11: + sarRatio = [15, 11];break; + case 12: + sarRatio = [64, 33];break; + case 13: + sarRatio = [160, 99];break; + case 14: + sarRatio = [4, 3];break; + case 15: + sarRatio = [3, 2];break; + case 16: + sarRatio = [2, 1];break; + case 255: + { + sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()]; + break; + } + } + if (sarRatio) { + sarScale = sarRatio[0] / sarRatio[1]; + } + } + } + return { + profileIdc: profileIdc, + levelIdc: levelIdc, + profileCompatibility: profileCompatibility, + width: Math.ceil(((picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2) * sarScale), + height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2 + }; + }; + }; + _H264Stream.prototype = new Stream$2(); + + var h264 = { + H264Stream: _H264Stream, + NalByteStream: _NalByteStream + }; + var h264_1 = h264.H264Stream; + var h264_2 = h264.NalByteStream; + + var h264$1 = /*#__PURE__*/Object.freeze({ + default: h264, + __moduleExports: h264, + H264Stream: h264_1, + NalByteStream: h264_2 + }); + + // Constants + var _AacStream; + + /** + * Splits an incoming stream of binary data into ADTS and ID3 Frames. + */ + + _AacStream = function AacStream() { + var everything = new Uint8Array(), + timeStamp = 0; + + _AacStream.prototype.init.call(this); + + this.setTimestamp = function (timestamp) { + timeStamp = timestamp; + }; + + this.parseId3TagSize = function (header, byteIndex) { + var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9], + flags = header[byteIndex + 5], + footerPresent = (flags & 16) >> 4; + + if (footerPresent) { + return returnSize + 20; + } + return returnSize + 10; + }; + + this.parseAdtsSize = function (header, byteIndex) { + var lowThree = (header[byteIndex + 5] & 0xE0) >> 5, + middle = header[byteIndex + 4] << 3, + highTwo = header[byteIndex + 3] & 0x3 << 11; + + return highTwo | middle | lowThree; + }; + + this.push = function (bytes) { + var frameSize = 0, + byteIndex = 0, + bytesLeft, + chunk, + packet, + tempLength; + + // If there are bytes remaining from the last segment, prepend them to the + // bytes that were pushed in + if (everything.length) { + tempLength = everything.length; + everything = new Uint8Array(bytes.byteLength + tempLength); + everything.set(everything.subarray(0, tempLength)); + everything.set(bytes, tempLength); + } else { + everything = bytes; + } + + while (everything.length - byteIndex >= 3) { + if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) { + + // Exit early because we don't have enough to parse + // the ID3 tag header + if (everything.length - byteIndex < 10) { + break; + } + + // check framesize + frameSize = this.parseId3TagSize(everything, byteIndex); + + // Exit early if we don't have enough in the buffer + // to emit a full packet + if (frameSize > everything.length) { + break; + } + chunk = { + type: 'timed-metadata', + data: everything.subarray(byteIndex, byteIndex + frameSize) + }; + this.trigger('data', chunk); + byteIndex += frameSize; + continue; + } else if (everything[byteIndex] & 0xff === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) { + + // Exit early because we don't have enough to parse + // the ADTS frame header + if (everything.length - byteIndex < 7) { + break; + } + + frameSize = this.parseAdtsSize(everything, byteIndex); + + // Exit early if we don't have enough in the buffer + // to emit a full packet + if (frameSize > everything.length) { + break; + } + + packet = { + type: 'audio', + data: everything.subarray(byteIndex, byteIndex + frameSize), + pts: timeStamp, + dts: timeStamp + }; + this.trigger('data', packet); + byteIndex += frameSize; + continue; + } + byteIndex++; + } + bytesLeft = everything.length - byteIndex; + + if (bytesLeft > 0) { + everything = everything.subarray(byteIndex); + } else { + everything = new Uint8Array(); + } + }; + }; + + _AacStream.prototype = new Stream$2(); + + var aac = _AacStream; + + var aac$1 = /*#__PURE__*/Object.freeze({ + default: aac, + __moduleExports: aac + }); + + var highPrefix = [33, 16, 5, 32, 164, 27]; + var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252]; + var zeroFill = function zeroFill(count) { + var a = []; + while (count--) { + a.push(0); + } + return a; + }; + + var makeTable = function makeTable(metaTable) { + return Object.keys(metaTable).reduce(function (obj, key) { + obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) { + return arr.concat(part); + }, [])); + return obj; + }, {}); + }; + + // Frames-of-silence to use for filling in missing AAC frames + var coneOfSilence = { + 96000: [highPrefix, [227, 64], zeroFill(154), [56]], + 88200: [highPrefix, [231], zeroFill(170), [56]], + 64000: [highPrefix, [248, 192], zeroFill(240), [56]], + 48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]], + 44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]], + 32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]], + 24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]], + 16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]], + 12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]], + 11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]], + 8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]] + }; + + var silence = makeTable(coneOfSilence); + + var silence$1 = /*#__PURE__*/Object.freeze({ + default: silence, + __moduleExports: silence + }); + + var ONE_SECOND_IN_TS$1 = 90000, + // 90kHz clock + secondsToVideoTs, + secondsToAudioTs, + videoTsToSeconds, + audioTsToSeconds, + audioTsToVideoTs, + videoTsToAudioTs; + + secondsToVideoTs = function secondsToVideoTs(seconds) { + return seconds * ONE_SECOND_IN_TS$1; + }; + + secondsToAudioTs = function secondsToAudioTs(seconds, sampleRate) { + return seconds * sampleRate; + }; + + videoTsToSeconds = function videoTsToSeconds(timestamp) { + return timestamp / ONE_SECOND_IN_TS$1; + }; + + audioTsToSeconds = function audioTsToSeconds(timestamp, sampleRate) { + return timestamp / sampleRate; + }; + + audioTsToVideoTs = function audioTsToVideoTs(timestamp, sampleRate) { + return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate)); + }; + + videoTsToAudioTs = function videoTsToAudioTs(timestamp, sampleRate) { + return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate); + }; + + var clock = { + secondsToVideoTs: secondsToVideoTs, + secondsToAudioTs: secondsToAudioTs, + videoTsToSeconds: videoTsToSeconds, + audioTsToSeconds: audioTsToSeconds, + audioTsToVideoTs: audioTsToVideoTs, + videoTsToAudioTs: videoTsToAudioTs + }; + var clock_1 = clock.secondsToVideoTs; + var clock_2 = clock.secondsToAudioTs; + var clock_3 = clock.videoTsToSeconds; + var clock_4 = clock.audioTsToSeconds; + var clock_5 = clock.audioTsToVideoTs; + var clock_6 = clock.videoTsToAudioTs; + + var clock$1 = /*#__PURE__*/Object.freeze({ + default: clock, + __moduleExports: clock, + secondsToVideoTs: clock_1, + secondsToAudioTs: clock_2, + videoTsToSeconds: clock_3, + audioTsToSeconds: clock_4, + audioTsToVideoTs: clock_5, + videoTsToAudioTs: clock_6 + }); + + var mp4 = ( mp4Generator$1 && mp4Generator ) || mp4Generator$1; + + var frameUtils$2 = ( frameUtils$1 && frameUtils ) || frameUtils$1; + + var trackDecodeInfo$2 = ( trackDecodeInfo$1 && trackDecodeInfo ) || trackDecodeInfo$1; + + var m2ts$2 = ( m2ts$1 && m2ts_1 ) || m2ts$1; + + var AdtsStream = ( adts$1 && adts ) || adts$1; + + var require$$0$3 = ( h264$1 && h264 ) || h264$1; + + var AacStream = ( aac$1 && aac ) || aac$1; + + var coneOfSilence$1 = ( silence$1 && silence ) || silence$1; + + var clock$2 = ( clock$1 && clock ) || clock$1; + + var H264Stream = require$$0$3.H264Stream; + + // constants + var AUDIO_PROPERTIES = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize']; + + var VIDEO_PROPERTIES = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility']; + + var ONE_SECOND_IN_TS$2 = 90000; // 90kHz clock + + // object types + var _VideoSegmentStream, _AudioSegmentStream, _Transmuxer, _CoalesceStream; + + // Helper functions + var isLikelyAacData, arrayEquals, sumFrameByteLengths; + + isLikelyAacData = function isLikelyAacData(data) { + if (data[0] === 'I'.charCodeAt(0) && data[1] === 'D'.charCodeAt(0) && data[2] === '3'.charCodeAt(0)) { + return true; + } + return false; + }; + + /** + * Compare two arrays (even typed) for same-ness + */ + arrayEquals = function arrayEquals(a, b) { + var i; + + if (a.length !== b.length) { + return false; + } + + // compare the value of each element in the array + for (i = 0; i < a.length; i++) { + if (a[i] !== b[i]) { + return false; + } + } + + return true; + }; + + /** + * Sum the `byteLength` properties of the data in each AAC frame + */ + sumFrameByteLengths = function sumFrameByteLengths(array) { + var i, + currentObj, + sum = 0; + + // sum the byteLength's all each nal unit in the frame + for (i = 0; i < array.length; i++) { + currentObj = array[i]; + sum += currentObj.data.byteLength; + } + + return sum; + }; + + /** + * Constructs a single-track, ISO BMFF media segment from AAC data + * events. The output of this stream can be fed to a SourceBuffer + * configured with a suitable initialization segment. + * @param track {object} track metadata configuration + * @param options {object} transmuxer options object + * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps + * in the source; false to adjust the first segment to start at 0. + */ + _AudioSegmentStream = function AudioSegmentStream(track, options) { + var adtsFrames = [], + sequenceNumber = 0, + earliestAllowedDts = 0, + audioAppendStartTs = 0, + videoBaseMediaDecodeTime = Infinity; + + options = options || {}; + + _AudioSegmentStream.prototype.init.call(this); + + this.push = function (data) { + trackDecodeInfo$2.collectDtsInfo(track, data); + + if (track) { + AUDIO_PROPERTIES.forEach(function (prop) { + track[prop] = data[prop]; + }); + } + + // buffer audio data until end() is called + adtsFrames.push(data); + }; + + this.setEarliestDts = function (earliestDts) { + earliestAllowedDts = earliestDts - track.timelineStartInfo.baseMediaDecodeTime; + }; + + this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) { + videoBaseMediaDecodeTime = baseMediaDecodeTime; + }; + + this.setAudioAppendStart = function (timestamp) { + audioAppendStartTs = timestamp; + }; + + this.flush = function () { + var frames, moof, mdat, boxes; + + // return early if no audio data has been observed + if (adtsFrames.length === 0) { + this.trigger('done', 'AudioSegmentStream'); + return; + } + + frames = this.trimAdtsFramesByEarliestDts_(adtsFrames); + track.baseMediaDecodeTime = trackDecodeInfo$2.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); + + this.prefixWithSilence_(track, frames); + + // we have to build the index from byte locations to + // samples (that is, adts frames) in the audio data + track.samples = this.generateSampleTable_(frames); + + // concatenate the audio data to constuct the mdat + mdat = mp4.mdat(this.concatenateFrameData_(frames)); + + adtsFrames = []; + + moof = mp4.moof(sequenceNumber, [track]); + boxes = new Uint8Array(moof.byteLength + mdat.byteLength); + + // bump the sequence number for next time + sequenceNumber++; + + boxes.set(moof); + boxes.set(mdat, moof.byteLength); + + trackDecodeInfo$2.clearDtsInfo(track); + + this.trigger('data', { track: track, boxes: boxes }); + this.trigger('done', 'AudioSegmentStream'); + }; + + // Possibly pad (prefix) the audio track with silence if appending this track + // would lead to the introduction of a gap in the audio buffer + this.prefixWithSilence_ = function (track, frames) { + var baseMediaDecodeTimeTs, + frameDuration = 0, + audioGapDuration = 0, + audioFillFrameCount = 0, + audioFillDuration = 0, + silentFrame, + i; + + if (!frames.length) { + return; + } + + baseMediaDecodeTimeTs = clock$2.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); + // determine frame clock duration based on sample rate, round up to avoid overfills + frameDuration = Math.ceil(ONE_SECOND_IN_TS$2 / (track.samplerate / 1024)); + + if (audioAppendStartTs && videoBaseMediaDecodeTime) { + // insert the shortest possible amount (audio gap or audio to video gap) + audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); + // number of full frames in the audio gap + audioFillFrameCount = Math.floor(audioGapDuration / frameDuration); + audioFillDuration = audioFillFrameCount * frameDuration; + } + + // don't attempt to fill gaps smaller than a single frame or larger + // than a half second + if (audioFillFrameCount < 1 || audioFillDuration > ONE_SECOND_IN_TS$2 / 2) { + return; + } + + silentFrame = coneOfSilence$1[track.samplerate]; + + if (!silentFrame) { + // we don't have a silent frame pregenerated for the sample rate, so use a frame + // from the content instead + silentFrame = frames[0].data; + } + + for (i = 0; i < audioFillFrameCount; i++) { + frames.splice(i, 0, { + data: silentFrame + }); + } + + track.baseMediaDecodeTime -= Math.floor(clock$2.videoTsToAudioTs(audioFillDuration, track.samplerate)); + }; + + // If the audio segment extends before the earliest allowed dts + // value, remove AAC frames until starts at or after the earliest + // allowed DTS so that we don't end up with a negative baseMedia- + // DecodeTime for the audio track + this.trimAdtsFramesByEarliestDts_ = function (adtsFrames) { + if (track.minSegmentDts >= earliestAllowedDts) { + return adtsFrames; + } + + // We will need to recalculate the earliest segment Dts + track.minSegmentDts = Infinity; + + return adtsFrames.filter(function (currentFrame) { + // If this is an allowed frame, keep it and record it's Dts + if (currentFrame.dts >= earliestAllowedDts) { + track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts); + track.minSegmentPts = track.minSegmentDts; + return true; + } + // Otherwise, discard it + return false; + }); + }; + + // generate the track's raw mdat data from an array of frames + this.generateSampleTable_ = function (frames) { + var i, + currentFrame, + samples = []; + + for (i = 0; i < frames.length; i++) { + currentFrame = frames[i]; + samples.push({ + size: currentFrame.data.byteLength, + duration: 1024 // For AAC audio, all samples contain 1024 samples + }); + } + return samples; + }; + + // generate the track's sample table from an array of frames + this.concatenateFrameData_ = function (frames) { + var i, + currentFrame, + dataOffset = 0, + data = new Uint8Array(sumFrameByteLengths(frames)); + + for (i = 0; i < frames.length; i++) { + currentFrame = frames[i]; + + data.set(currentFrame.data, dataOffset); + dataOffset += currentFrame.data.byteLength; + } + return data; + }; + }; + + _AudioSegmentStream.prototype = new Stream$2(); + + /** + * Constructs a single-track, ISO BMFF media segment from H264 data + * events. The output of this stream can be fed to a SourceBuffer + * configured with a suitable initialization segment. + * @param track {object} track metadata configuration + * @param options {object} transmuxer options object + * @param options.alignGopsAtEnd {boolean} If true, start from the end of the + * gopsToAlignWith list when attempting to align gop pts + * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps + * in the source; false to adjust the first segment to start at 0. + */ + _VideoSegmentStream = function VideoSegmentStream(track, options) { + var sequenceNumber = 0, + nalUnits = [], + gopsToAlignWith = [], + config, + pps; + + options = options || {}; + + _VideoSegmentStream.prototype.init.call(this); + + delete track.minPTS; + + this.gopCache_ = []; + + /** + * Constructs a ISO BMFF segment given H264 nalUnits + * @param {Object} nalUnit A data event representing a nalUnit + * @param {String} nalUnit.nalUnitType + * @param {Object} nalUnit.config Properties for a mp4 track + * @param {Uint8Array} nalUnit.data The nalUnit bytes + * @see lib/codecs/h264.js + **/ + this.push = function (nalUnit) { + trackDecodeInfo$2.collectDtsInfo(track, nalUnit); + + // record the track config + if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) { + config = nalUnit.config; + track.sps = [nalUnit.data]; + + VIDEO_PROPERTIES.forEach(function (prop) { + track[prop] = config[prop]; + }, this); + } + + if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) { + pps = nalUnit.data; + track.pps = [nalUnit.data]; + } + + // buffer video until flush() is called + nalUnits.push(nalUnit); + }; + + /** + * Pass constructed ISO BMFF track and boxes on to the + * next stream in the pipeline + **/ + this.flush = function () { + var frames, gopForFusion, gops, moof, mdat, boxes; + + // Throw away nalUnits at the start of the byte stream until + // we find the first AUD + while (nalUnits.length) { + if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') { + break; + } + nalUnits.shift(); + } + + // Return early if no video data has been observed + if (nalUnits.length === 0) { + this.resetStream_(); + this.trigger('done', 'VideoSegmentStream'); + return; + } + + // Organize the raw nal-units into arrays that represent + // higher-level constructs such as frames and gops + // (group-of-pictures) + frames = frameUtils$2.groupNalsIntoFrames(nalUnits); + gops = frameUtils$2.groupFramesIntoGops(frames); + + // If the first frame of this fragment is not a keyframe we have + // a problem since MSE (on Chrome) requires a leading keyframe. + // + // We have two approaches to repairing this situation: + // 1) GOP-FUSION: + // This is where we keep track of the GOPS (group-of-pictures) + // from previous fragments and attempt to find one that we can + // prepend to the current fragment in order to create a valid + // fragment. + // 2) KEYFRAME-PULLING: + // Here we search for the first keyframe in the fragment and + // throw away all the frames between the start of the fragment + // and that keyframe. We then extend the duration and pull the + // PTS of the keyframe forward so that it covers the time range + // of the frames that were disposed of. + // + // #1 is far prefereable over #2 which can cause "stuttering" but + // requires more things to be just right. + if (!gops[0][0].keyFrame) { + // Search for a gop for fusion from our gopCache + gopForFusion = this.getGopForFusion_(nalUnits[0], track); + + if (gopForFusion) { + gops.unshift(gopForFusion); + // Adjust Gops' metadata to account for the inclusion of the + // new gop at the beginning + gops.byteLength += gopForFusion.byteLength; + gops.nalCount += gopForFusion.nalCount; + gops.pts = gopForFusion.pts; + gops.dts = gopForFusion.dts; + gops.duration += gopForFusion.duration; + } else { + // If we didn't find a candidate gop fall back to keyframe-pulling + gops = frameUtils$2.extendFirstKeyFrame(gops); + } + } + + // Trim gops to align with gopsToAlignWith + if (gopsToAlignWith.length) { + var alignedGops; + + if (options.alignGopsAtEnd) { + alignedGops = this.alignGopsAtEnd_(gops); + } else { + alignedGops = this.alignGopsAtStart_(gops); + } + + if (!alignedGops) { + // save all the nals in the last GOP into the gop cache + this.gopCache_.unshift({ + gop: gops.pop(), + pps: track.pps, + sps: track.sps + }); + + // Keep a maximum of 6 GOPs in the cache + this.gopCache_.length = Math.min(6, this.gopCache_.length); + + // Clear nalUnits + nalUnits = []; + + // return early no gops can be aligned with desired gopsToAlignWith + this.resetStream_(); + this.trigger('done', 'VideoSegmentStream'); + return; + } + + // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct + // when recalculated before sending off to CoalesceStream + trackDecodeInfo$2.clearDtsInfo(track); + + gops = alignedGops; + } + + trackDecodeInfo$2.collectDtsInfo(track, gops); + + // First, we have to build the index from byte locations to + // samples (that is, frames) in the video data + track.samples = frameUtils$2.generateSampleTable(gops); + + // Concatenate the video data and construct the mdat + mdat = mp4.mdat(frameUtils$2.concatenateNalData(gops)); + + track.baseMediaDecodeTime = trackDecodeInfo$2.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); + + this.trigger('processedGopsInfo', gops.map(function (gop) { + return { + pts: gop.pts, + dts: gop.dts, + byteLength: gop.byteLength + }; + })); + + // save all the nals in the last GOP into the gop cache + this.gopCache_.unshift({ + gop: gops.pop(), + pps: track.pps, + sps: track.sps + }); + + // Keep a maximum of 6 GOPs in the cache + this.gopCache_.length = Math.min(6, this.gopCache_.length); + + // Clear nalUnits + nalUnits = []; + + this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime); + this.trigger('timelineStartInfo', track.timelineStartInfo); + + moof = mp4.moof(sequenceNumber, [track]); + + // it would be great to allocate this array up front instead of + // throwing away hundreds of media segment fragments + boxes = new Uint8Array(moof.byteLength + mdat.byteLength); + + // Bump the sequence number for next time + sequenceNumber++; + + boxes.set(moof); + boxes.set(mdat, moof.byteLength); + + this.trigger('data', { track: track, boxes: boxes }); + + this.resetStream_(); + + // Continue with the flush process now + this.trigger('done', 'VideoSegmentStream'); + }; + + this.resetStream_ = function () { + trackDecodeInfo$2.clearDtsInfo(track); + + // reset config and pps because they may differ across segments + // for instance, when we are rendition switching + config = undefined; + pps = undefined; + }; + + // Search for a candidate Gop for gop-fusion from the gop cache and + // return it or return null if no good candidate was found + this.getGopForFusion_ = function (nalUnit) { + var halfSecond = 45000, + // Half-a-second in a 90khz clock + allowableOverlap = 10000, + // About 3 frames @ 30fps + nearestDistance = Infinity, + dtsDistance, + nearestGopObj, + currentGop, + currentGopObj, + i; + + // Search for the GOP nearest to the beginning of this nal unit + for (i = 0; i < this.gopCache_.length; i++) { + currentGopObj = this.gopCache_[i]; + currentGop = currentGopObj.gop; + + // Reject Gops with different SPS or PPS + if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) { + continue; + } + + // Reject Gops that would require a negative baseMediaDecodeTime + if (currentGop.dts < track.timelineStartInfo.dts) { + continue; + } + + // The distance between the end of the gop and the start of the nalUnit + dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; + + // Only consider GOPS that start before the nal unit and end within + // a half-second of the nal unit + if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) { + + // Always use the closest GOP we found if there is more than + // one candidate + if (!nearestGopObj || nearestDistance > dtsDistance) { + nearestGopObj = currentGopObj; + nearestDistance = dtsDistance; + } + } + } + + if (nearestGopObj) { + return nearestGopObj.gop; + } + return null; + }; + + // trim gop list to the first gop found that has a matching pts with a gop in the list + // of gopsToAlignWith starting from the START of the list + this.alignGopsAtStart_ = function (gops) { + var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops; + + byteLength = gops.byteLength; + nalCount = gops.nalCount; + duration = gops.duration; + alignIndex = gopIndex = 0; + + while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) { + align = gopsToAlignWith[alignIndex]; + gop = gops[gopIndex]; + + if (align.pts === gop.pts) { + break; + } + + if (gop.pts > align.pts) { + // this current gop starts after the current gop we want to align on, so increment + // align index + alignIndex++; + continue; + } + + // current gop starts before the current gop we want to align on. so increment gop + // index + gopIndex++; + byteLength -= gop.byteLength; + nalCount -= gop.nalCount; + duration -= gop.duration; + } + + if (gopIndex === 0) { + // no gops to trim + return gops; + } + + if (gopIndex === gops.length) { + // all gops trimmed, skip appending all gops + return null; + } + + alignedGops = gops.slice(gopIndex); + alignedGops.byteLength = byteLength; + alignedGops.duration = duration; + alignedGops.nalCount = nalCount; + alignedGops.pts = alignedGops[0].pts; + alignedGops.dts = alignedGops[0].dts; + + return alignedGops; + }; + + // trim gop list to the first gop found that has a matching pts with a gop in the list + // of gopsToAlignWith starting from the END of the list + this.alignGopsAtEnd_ = function (gops) { + var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound; + + alignIndex = gopsToAlignWith.length - 1; + gopIndex = gops.length - 1; + alignEndIndex = null; + matchFound = false; + + while (alignIndex >= 0 && gopIndex >= 0) { + align = gopsToAlignWith[alignIndex]; + gop = gops[gopIndex]; + + if (align.pts === gop.pts) { + matchFound = true; + break; + } + + if (align.pts > gop.pts) { + alignIndex--; + continue; + } + + if (alignIndex === gopsToAlignWith.length - 1) { + // gop.pts is greater than the last alignment candidate. If no match is found + // by the end of this loop, we still want to append gops that come after this + // point + alignEndIndex = gopIndex; + } + + gopIndex--; + } + + if (!matchFound && alignEndIndex === null) { + return null; + } + + var trimIndex; + + if (matchFound) { + trimIndex = gopIndex; + } else { + trimIndex = alignEndIndex; + } + + if (trimIndex === 0) { + return gops; + } + + var alignedGops = gops.slice(trimIndex); + var metadata = alignedGops.reduce(function (total, gop) { + total.byteLength += gop.byteLength; + total.duration += gop.duration; + total.nalCount += gop.nalCount; + return total; + }, { byteLength: 0, duration: 0, nalCount: 0 }); + + alignedGops.byteLength = metadata.byteLength; + alignedGops.duration = metadata.duration; + alignedGops.nalCount = metadata.nalCount; + alignedGops.pts = alignedGops[0].pts; + alignedGops.dts = alignedGops[0].dts; + + return alignedGops; + }; + + this.alignGopsWith = function (newGopsToAlignWith) { + gopsToAlignWith = newGopsToAlignWith; + }; + }; + + _VideoSegmentStream.prototype = new Stream$2(); + + /** + * A Stream that can combine multiple streams (ie. audio & video) + * into a single output segment for MSE. Also supports audio-only + * and video-only streams. + */ + _CoalesceStream = function CoalesceStream(options, metadataStream) { + // Number of Tracks per output segment + // If greater than 1, we combine multiple + // tracks into a single segment + this.numberOfTracks = 0; + this.metadataStream = metadataStream; + + if (typeof options.remux !== 'undefined') { + this.remuxTracks = !!options.remux; + } else { + this.remuxTracks = true; + } + + this.pendingTracks = []; + this.videoTrack = null; + this.pendingBoxes = []; + this.pendingCaptions = []; + this.pendingMetadata = []; + this.pendingBytes = 0; + this.emittedTracks = 0; + + _CoalesceStream.prototype.init.call(this); + + // Take output from multiple + this.push = function (output) { + // buffer incoming captions until the associated video segment + // finishes + if (output.text) { + return this.pendingCaptions.push(output); + } + // buffer incoming id3 tags until the final flush + if (output.frames) { + return this.pendingMetadata.push(output); + } + + // Add this track to the list of pending tracks and store + // important information required for the construction of + // the final segment + this.pendingTracks.push(output.track); + this.pendingBoxes.push(output.boxes); + this.pendingBytes += output.boxes.byteLength; + + if (output.track.type === 'video') { + this.videoTrack = output.track; + } + if (output.track.type === 'audio') { + this.audioTrack = output.track; + } + }; + }; + + _CoalesceStream.prototype = new Stream$2(); + _CoalesceStream.prototype.flush = function (flushSource) { + var offset = 0, + event = { + captions: [], + captionStreams: {}, + metadata: [], + info: {} + }, + caption, + id3, + initSegment, + timelineStartPts = 0, + i; + + if (this.pendingTracks.length < this.numberOfTracks) { + if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') { + // Return because we haven't received a flush from a data-generating + // portion of the segment (meaning that we have only recieved meta-data + // or captions.) + return; + } else if (this.remuxTracks) { + // Return until we have enough tracks from the pipeline to remux (if we + // are remuxing audio and video into a single MP4) + return; + } else if (this.pendingTracks.length === 0) { + // In the case where we receive a flush without any data having been + // received we consider it an emitted track for the purposes of coalescing + // `done` events. + // We do this for the case where there is an audio and video track in the + // segment but no audio data. (seen in several playlists with alternate + // audio tracks and no audio present in the main TS segments.) + this.emittedTracks++; + + if (this.emittedTracks >= this.numberOfTracks) { + this.trigger('done'); + this.emittedTracks = 0; + } + return; + } + } + + if (this.videoTrack) { + timelineStartPts = this.videoTrack.timelineStartInfo.pts; + VIDEO_PROPERTIES.forEach(function (prop) { + event.info[prop] = this.videoTrack[prop]; + }, this); + } else if (this.audioTrack) { + timelineStartPts = this.audioTrack.timelineStartInfo.pts; + AUDIO_PROPERTIES.forEach(function (prop) { + event.info[prop] = this.audioTrack[prop]; + }, this); + } + + if (this.pendingTracks.length === 1) { + event.type = this.pendingTracks[0].type; + } else { + event.type = 'combined'; + } + + this.emittedTracks += this.pendingTracks.length; + + initSegment = mp4.initSegment(this.pendingTracks); + + // Create a new typed array to hold the init segment + event.initSegment = new Uint8Array(initSegment.byteLength); + + // Create an init segment containing a moov + // and track definitions + event.initSegment.set(initSegment); + + // Create a new typed array to hold the moof+mdats + event.data = new Uint8Array(this.pendingBytes); + + // Append each moof+mdat (one per track) together + for (i = 0; i < this.pendingBoxes.length; i++) { + event.data.set(this.pendingBoxes[i], offset); + offset += this.pendingBoxes[i].byteLength; + } + + // Translate caption PTS times into second offsets into the + // video timeline for the segment, and add track info + for (i = 0; i < this.pendingCaptions.length; i++) { + caption = this.pendingCaptions[i]; + caption.startTime = caption.startPts - timelineStartPts; + caption.startTime /= 90e3; + caption.endTime = caption.endPts - timelineStartPts; + caption.endTime /= 90e3; + event.captionStreams[caption.stream] = true; + event.captions.push(caption); + } + + // Translate ID3 frame PTS times into second offsets into the + // video timeline for the segment + for (i = 0; i < this.pendingMetadata.length; i++) { + id3 = this.pendingMetadata[i]; + id3.cueTime = id3.pts - timelineStartPts; + id3.cueTime /= 90e3; + event.metadata.push(id3); + } + // We add this to every single emitted segment even though we only need + // it for the first + event.metadata.dispatchType = this.metadataStream.dispatchType; + + // Reset stream state + this.pendingTracks.length = 0; + this.videoTrack = null; + this.pendingBoxes.length = 0; + this.pendingCaptions.length = 0; + this.pendingBytes = 0; + this.pendingMetadata.length = 0; + + // Emit the built segment + this.trigger('data', event); + + // Only emit `done` if all tracks have been flushed and emitted + if (this.emittedTracks >= this.numberOfTracks) { + this.trigger('done'); + this.emittedTracks = 0; + } + }; + /** + * A Stream that expects MP2T binary data as input and produces + * corresponding media segments, suitable for use with Media Source + * Extension (MSE) implementations that support the ISO BMFF byte + * stream format, like Chrome. + */ + _Transmuxer = function Transmuxer(options) { + var self = this, + hasFlushed = true, + videoTrack, + audioTrack; + + _Transmuxer.prototype.init.call(this); + + options = options || {}; + this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0; + this.transmuxPipeline_ = {}; + + this.setupAacPipeline = function () { + var pipeline = {}; + this.transmuxPipeline_ = pipeline; + + pipeline.type = 'aac'; + pipeline.metadataStream = new m2ts$2.MetadataStream(); + + // set up the parsing pipeline + pipeline.aacStream = new AacStream(); + pipeline.audioTimestampRolloverStream = new m2ts$2.TimestampRolloverStream('audio'); + pipeline.timedMetadataTimestampRolloverStream = new m2ts$2.TimestampRolloverStream('timed-metadata'); + pipeline.adtsStream = new AdtsStream(); + pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream); + pipeline.headOfPipeline = pipeline.aacStream; + + pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream); + pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); + + pipeline.metadataStream.on('timestamp', function (frame) { + pipeline.aacStream.setTimestamp(frame.timeStamp); + }); + + pipeline.aacStream.on('data', function (data) { + if (data.type === 'timed-metadata' && !pipeline.audioSegmentStream) { + audioTrack = audioTrack || { + timelineStartInfo: { + baseMediaDecodeTime: self.baseMediaDecodeTime + }, + codec: 'adts', + type: 'audio' + }; + // hook up the audio segment stream to the first track with aac data + pipeline.coalesceStream.numberOfTracks++; + pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); + // Set up the final part of the audio pipeline + pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); + } + }); + + // Re-emit any data coming from the coalesce stream to the outside world + pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); + // Let the consumer know we have finished flushing the entire pipeline + pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done')); + }; + + this.setupTsPipeline = function () { + var pipeline = {}; + this.transmuxPipeline_ = pipeline; + + pipeline.type = 'ts'; + pipeline.metadataStream = new m2ts$2.MetadataStream(); + + // set up the parsing pipeline + pipeline.packetStream = new m2ts$2.TransportPacketStream(); + pipeline.parseStream = new m2ts$2.TransportParseStream(); + pipeline.elementaryStream = new m2ts$2.ElementaryStream(); + pipeline.videoTimestampRolloverStream = new m2ts$2.TimestampRolloverStream('video'); + pipeline.audioTimestampRolloverStream = new m2ts$2.TimestampRolloverStream('audio'); + pipeline.timedMetadataTimestampRolloverStream = new m2ts$2.TimestampRolloverStream('timed-metadata'); + pipeline.adtsStream = new AdtsStream(); + pipeline.h264Stream = new H264Stream(); + pipeline.captionStream = new m2ts$2.CaptionStream(); + pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream); + pipeline.headOfPipeline = pipeline.packetStream; + + // disassemble MPEG2-TS packets into elementary streams + pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream); + + // !!THIS ORDER IS IMPORTANT!! + // demux the streams + pipeline.elementaryStream.pipe(pipeline.videoTimestampRolloverStream).pipe(pipeline.h264Stream); + pipeline.elementaryStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream); + + pipeline.elementaryStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); + + // Hook up CEA-608/708 caption stream + pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream); + + pipeline.elementaryStream.on('data', function (data) { + var i; + + if (data.type === 'metadata') { + i = data.tracks.length; + + // scan the tracks listed in the metadata + while (i--) { + if (!videoTrack && data.tracks[i].type === 'video') { + videoTrack = data.tracks[i]; + videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime; + } else if (!audioTrack && data.tracks[i].type === 'audio') { + audioTrack = data.tracks[i]; + audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime; + } + } + + // hook up the video segment stream to the first track with h264 data + if (videoTrack && !pipeline.videoSegmentStream) { + pipeline.coalesceStream.numberOfTracks++; + pipeline.videoSegmentStream = new _VideoSegmentStream(videoTrack, options); + + pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) { + // When video emits timelineStartInfo data after a flush, we forward that + // info to the AudioSegmentStream, if it exists, because video timeline + // data takes precedence. + if (audioTrack) { + audioTrack.timelineStartInfo = timelineStartInfo; + // On the first segment we trim AAC frames that exist before the + // very earliest DTS we have seen in video because Chrome will + // interpret any video track with a baseMediaDecodeTime that is + // non-zero as a gap. + pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts); + } + }); + + pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo')); + + pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) { + if (audioTrack) { + pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime); + } + }); + + // Set up the final part of the video pipeline + pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream); + } + + if (audioTrack && !pipeline.audioSegmentStream) { + // hook up the audio segment stream to the first track with aac data + pipeline.coalesceStream.numberOfTracks++; + pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); + + // Set up the final part of the audio pipeline + pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); + } + } + }); + + // Re-emit any data coming from the coalesce stream to the outside world + pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); + // Let the consumer know we have finished flushing the entire pipeline + pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done')); + }; + + // hook up the segment streams once track metadata is delivered + this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) { + var pipeline = this.transmuxPipeline_; + + this.baseMediaDecodeTime = baseMediaDecodeTime; + if (audioTrack) { + audioTrack.timelineStartInfo.dts = undefined; + audioTrack.timelineStartInfo.pts = undefined; + trackDecodeInfo$2.clearDtsInfo(audioTrack); + audioTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime; + if (pipeline.audioTimestampRolloverStream) { + pipeline.audioTimestampRolloverStream.discontinuity(); + } + } + if (videoTrack) { + if (pipeline.videoSegmentStream) { + pipeline.videoSegmentStream.gopCache_ = []; + pipeline.videoTimestampRolloverStream.discontinuity(); + } + videoTrack.timelineStartInfo.dts = undefined; + videoTrack.timelineStartInfo.pts = undefined; + trackDecodeInfo$2.clearDtsInfo(videoTrack); + pipeline.captionStream.reset(); + videoTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime; + } + + if (pipeline.timedMetadataTimestampRolloverStream) { + pipeline.timedMetadataTimestampRolloverStream.discontinuity(); + } + }; + + this.setAudioAppendStart = function (timestamp) { + if (audioTrack) { + this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp); + } + }; + + this.alignGopsWith = function (gopsToAlignWith) { + if (videoTrack && this.transmuxPipeline_.videoSegmentStream) { + this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith); + } + }; + + // feed incoming data to the front of the parsing pipeline + this.push = function (data) { + if (hasFlushed) { + var isAac = isLikelyAacData(data); + + if (isAac && this.transmuxPipeline_.type !== 'aac') { + this.setupAacPipeline(); + } else if (!isAac && this.transmuxPipeline_.type !== 'ts') { + this.setupTsPipeline(); + } + hasFlushed = false; + } + this.transmuxPipeline_.headOfPipeline.push(data); + }; + + // flush any buffered data + this.flush = function () { + hasFlushed = true; + // Start at the top of the pipeline and flush all pending work + this.transmuxPipeline_.headOfPipeline.flush(); + }; + + // Caption data has to be reset when seeking outside buffered range + this.resetCaptions = function () { + if (this.transmuxPipeline_.captionStream) { + this.transmuxPipeline_.captionStream.reset(); + } + }; + }; + _Transmuxer.prototype = new Stream$2(); + + var transmuxer = { + Transmuxer: _Transmuxer, + VideoSegmentStream: _VideoSegmentStream, + AudioSegmentStream: _AudioSegmentStream, + AUDIO_PROPERTIES: AUDIO_PROPERTIES, + VIDEO_PROPERTIES: VIDEO_PROPERTIES + }; + var transmuxer_1 = transmuxer.Transmuxer; + var transmuxer_2 = transmuxer.VideoSegmentStream; + var transmuxer_3 = transmuxer.AudioSegmentStream; + var transmuxer_4 = transmuxer.AUDIO_PROPERTIES; + var transmuxer_5 = transmuxer.VIDEO_PROPERTIES; + + var transmuxer$1 = /*#__PURE__*/Object.freeze({ + default: transmuxer, + __moduleExports: transmuxer, + Transmuxer: transmuxer_1, + VideoSegmentStream: transmuxer_2, + AudioSegmentStream: transmuxer_3, + AUDIO_PROPERTIES: transmuxer_4, + VIDEO_PROPERTIES: transmuxer_5 + }); + + var inspectMp4, + _textifyMp, + parseType$1 = probe.parseType, + parseMp4Date = function parseMp4Date(seconds) { + return new Date(seconds * 1000 - 2082844800000); + }, + parseSampleFlags = function parseSampleFlags(flags) { + return { + isLeading: (flags[0] & 0x0c) >>> 2, + dependsOn: flags[0] & 0x03, + isDependedOn: (flags[1] & 0xc0) >>> 6, + hasRedundancy: (flags[1] & 0x30) >>> 4, + paddingValue: (flags[1] & 0x0e) >>> 1, + isNonSyncSample: flags[1] & 0x01, + degradationPriority: flags[2] << 8 | flags[3] + }; + }, + nalParse = function nalParse(avcStream) { + var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength), + result = [], + i, + length; + for (i = 0; i + 4 < avcStream.length; i += length) { + length = avcView.getUint32(i); + i += 4; + + // bail if this doesn't appear to be an H264 stream + if (length <= 0) { + result.push('<span style=\'color:red;\'>MALFORMED DATA</span>'); + continue; + } + + switch (avcStream[i] & 0x1F) { + case 0x01: + result.push('slice_layer_without_partitioning_rbsp'); + break; + case 0x05: + result.push('slice_layer_without_partitioning_rbsp_idr'); + break; + case 0x06: + result.push('sei_rbsp'); + break; + case 0x07: + result.push('seq_parameter_set_rbsp'); + break; + case 0x08: + result.push('pic_parameter_set_rbsp'); + break; + case 0x09: + result.push('access_unit_delimiter_rbsp'); + break; + default: + result.push('UNKNOWN NAL - ' + avcStream[i] & 0x1F); + break; + } + } + return result; + }, + + + // registry of handlers for individual mp4 box types + parse$1 = { + // codingname, not a first-class box type. stsd entries share the + // same format as real boxes so the parsing infrastructure can be + // shared + avc1: function avc1(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + dataReferenceIndex: view.getUint16(6), + width: view.getUint16(24), + height: view.getUint16(26), + horizresolution: view.getUint16(28) + view.getUint16(30) / 16, + vertresolution: view.getUint16(32) + view.getUint16(34) / 16, + frameCount: view.getUint16(40), + depth: view.getUint16(74), + config: inspectMp4(data.subarray(78, data.byteLength)) + }; + }, + avcC: function avcC(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + configurationVersion: data[0], + avcProfileIndication: data[1], + profileCompatibility: data[2], + avcLevelIndication: data[3], + lengthSizeMinusOne: data[4] & 0x03, + sps: [], + pps: [] + }, + numOfSequenceParameterSets = data[5] & 0x1f, + numOfPictureParameterSets, + nalSize, + offset, + i; + + // iterate past any SPSs + offset = 6; + for (i = 0; i < numOfSequenceParameterSets; i++) { + nalSize = view.getUint16(offset); + offset += 2; + result.sps.push(new Uint8Array(data.subarray(offset, offset + nalSize))); + offset += nalSize; + } + // iterate past any PPSs + numOfPictureParameterSets = data[offset]; + offset++; + for (i = 0; i < numOfPictureParameterSets; i++) { + nalSize = view.getUint16(offset); + offset += 2; + result.pps.push(new Uint8Array(data.subarray(offset, offset + nalSize))); + offset += nalSize; + } + return result; + }, + btrt: function btrt(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + bufferSizeDB: view.getUint32(0), + maxBitrate: view.getUint32(4), + avgBitrate: view.getUint32(8) + }; + }, + esds: function esds(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + esId: data[6] << 8 | data[7], + streamPriority: data[8] & 0x1f, + decoderConfig: { + objectProfileIndication: data[11], + streamType: data[12] >>> 2 & 0x3f, + bufferSize: data[13] << 16 | data[14] << 8 | data[15], + maxBitrate: data[16] << 24 | data[17] << 16 | data[18] << 8 | data[19], + avgBitrate: data[20] << 24 | data[21] << 16 | data[22] << 8 | data[23], + decoderConfigDescriptor: { + tag: data[24], + length: data[25], + audioObjectType: data[26] >>> 3 & 0x1f, + samplingFrequencyIndex: (data[26] & 0x07) << 1 | data[27] >>> 7 & 0x01, + channelConfiguration: data[27] >>> 3 & 0x0f + } + } + }; + }, + ftyp: function ftyp(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + majorBrand: parseType$1(data.subarray(0, 4)), + minorVersion: view.getUint32(4), + compatibleBrands: [] + }, + i = 8; + while (i < data.byteLength) { + result.compatibleBrands.push(parseType$1(data.subarray(i, i + 4))); + i += 4; + } + return result; + }, + dinf: function dinf(data) { + return { + boxes: inspectMp4(data) + }; + }, + dref: function dref(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + dataReferences: inspectMp4(data.subarray(8)) + }; + }, + hdlr: function hdlr(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)), + handlerType: parseType$1(data.subarray(8, 12)), + name: '' + }, + i = 8; + + // parse out the name field + for (i = 24; i < data.byteLength; i++) { + if (data[i] === 0x00) { + // the name field is null-terminated + i++; + break; + } + result.name += String.fromCharCode(data[i]); + } + // decode UTF-8 to javascript's internal representation + // see http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html + result.name = decodeURIComponent(escape(result.name)); + + return result; + }, + mdat: function mdat(data) { + return { + byteLength: data.byteLength, + nals: nalParse(data) + }; + }, + mdhd: function mdhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + i = 4, + language, + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)), + language: '' + }; + if (result.version === 1) { + i += 4; + result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 8; + result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 4; + result.timescale = view.getUint32(i); + i += 8; + result.duration = view.getUint32(i); // truncating top 4 bytes + } else { + result.creationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.modificationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.timescale = view.getUint32(i); + i += 4; + result.duration = view.getUint32(i); + } + i += 4; + // language is stored as an ISO-639-2/T code in an array of three 5-bit fields + // each field is the packed difference between its ASCII value and 0x60 + language = view.getUint16(i); + result.language += String.fromCharCode((language >> 10) + 0x60); + result.language += String.fromCharCode(((language & 0x03e0) >> 5) + 0x60); + result.language += String.fromCharCode((language & 0x1f) + 0x60); + + return result; + }, + mdia: function mdia(data) { + return { + boxes: inspectMp4(data) + }; + }, + mfhd: function mfhd(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sequenceNumber: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7] + }; + }, + minf: function minf(data) { + return { + boxes: inspectMp4(data) + }; + }, + // codingname, not a first-class box type. stsd entries share the + // same format as real boxes so the parsing infrastructure can be + // shared + mp4a: function mp4a(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + // 6 bytes reserved + dataReferenceIndex: view.getUint16(6), + // 4 + 4 bytes reserved + channelcount: view.getUint16(16), + samplesize: view.getUint16(18), + // 2 bytes pre_defined + // 2 bytes reserved + samplerate: view.getUint16(24) + view.getUint16(26) / 65536 + }; + + // if there are more bytes to process, assume this is an ISO/IEC + // 14496-14 MP4AudioSampleEntry and parse the ESDBox + if (data.byteLength > 28) { + result.streamDescriptor = inspectMp4(data.subarray(28))[0]; + } + return result; + }, + moof: function moof(data) { + return { + boxes: inspectMp4(data) + }; + }, + moov: function moov(data) { + return { + boxes: inspectMp4(data) + }; + }, + mvex: function mvex(data) { + return { + boxes: inspectMp4(data) + }; + }, + mvhd: function mvhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + i = 4, + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)) + }; + + if (result.version === 1) { + i += 4; + result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 8; + result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 4; + result.timescale = view.getUint32(i); + i += 8; + result.duration = view.getUint32(i); // truncating top 4 bytes + } else { + result.creationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.modificationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.timescale = view.getUint32(i); + i += 4; + result.duration = view.getUint32(i); + } + i += 4; + + // convert fixed-point, base 16 back to a number + result.rate = view.getUint16(i) + view.getUint16(i + 2) / 16; + i += 4; + result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8; + i += 2; + i += 2; + i += 2 * 4; + result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4)); + i += 9 * 4; + i += 6 * 4; + result.nextTrackId = view.getUint32(i); + return result; + }, + pdin: function pdin(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)), + rate: view.getUint32(4), + initialDelay: view.getUint32(8) + }; + }, + sdtp: function sdtp(data) { + var result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + samples: [] + }, + i; + + for (i = 4; i < data.byteLength; i++) { + result.samples.push({ + dependsOn: (data[i] & 0x30) >> 4, + isDependedOn: (data[i] & 0x0c) >> 2, + hasRedundancy: data[i] & 0x03 + }); + } + return result; + }, + sidx: function sidx(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + references: [], + referenceId: view.getUint32(4), + timescale: view.getUint32(8), + earliestPresentationTime: view.getUint32(12), + firstOffset: view.getUint32(16) + }, + referenceCount = view.getUint16(22), + i; + + for (i = 24; referenceCount; i += 12, referenceCount--) { + result.references.push({ + referenceType: (data[i] & 0x80) >>> 7, + referencedSize: view.getUint32(i) & 0x7FFFFFFF, + subsegmentDuration: view.getUint32(i + 4), + startsWithSap: !!(data[i + 8] & 0x80), + sapType: (data[i + 8] & 0x70) >>> 4, + sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF + }); + } + + return result; + }, + smhd: function smhd(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + balance: data[4] + data[5] / 256 + }; + }, + stbl: function stbl(data) { + return { + boxes: inspectMp4(data) + }; + }, + stco: function stco(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + chunkOffsets: [] + }, + entryCount = view.getUint32(4), + i; + for (i = 8; entryCount; i += 4, entryCount--) { + result.chunkOffsets.push(view.getUint32(i)); + } + return result; + }, + stsc: function stsc(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + entryCount = view.getUint32(4), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sampleToChunks: [] + }, + i; + for (i = 8; entryCount; i += 12, entryCount--) { + result.sampleToChunks.push({ + firstChunk: view.getUint32(i), + samplesPerChunk: view.getUint32(i + 4), + sampleDescriptionIndex: view.getUint32(i + 8) + }); + } + return result; + }, + stsd: function stsd(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sampleDescriptions: inspectMp4(data.subarray(8)) + }; + }, + stsz: function stsz(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sampleSize: view.getUint32(4), + entries: [] + }, + i; + for (i = 12; i < data.byteLength; i += 4) { + result.entries.push(view.getUint32(i)); + } + return result; + }, + stts: function stts(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + timeToSamples: [] + }, + entryCount = view.getUint32(4), + i; + + for (i = 8; entryCount; i += 8, entryCount--) { + result.timeToSamples.push({ + sampleCount: view.getUint32(i), + sampleDelta: view.getUint32(i + 4) + }); + } + return result; + }, + styp: function styp(data) { + return parse$1.ftyp(data); + }, + tfdt: function tfdt(data) { + var result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + baseMediaDecodeTime: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7] + }; + if (result.version === 1) { + result.baseMediaDecodeTime *= Math.pow(2, 32); + result.baseMediaDecodeTime += data[8] << 24 | data[9] << 16 | data[10] << 8 | data[11]; + } + return result; + }, + tfhd: function tfhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + trackId: view.getUint32(4) + }, + baseDataOffsetPresent = result.flags[2] & 0x01, + sampleDescriptionIndexPresent = result.flags[2] & 0x02, + defaultSampleDurationPresent = result.flags[2] & 0x08, + defaultSampleSizePresent = result.flags[2] & 0x10, + defaultSampleFlagsPresent = result.flags[2] & 0x20, + durationIsEmpty = result.flags[0] & 0x010000, + defaultBaseIsMoof = result.flags[0] & 0x020000, + i; + + i = 8; + if (baseDataOffsetPresent) { + i += 4; // truncate top 4 bytes + // FIXME: should we read the full 64 bits? + result.baseDataOffset = view.getUint32(12); + i += 4; + } + if (sampleDescriptionIndexPresent) { + result.sampleDescriptionIndex = view.getUint32(i); + i += 4; + } + if (defaultSampleDurationPresent) { + result.defaultSampleDuration = view.getUint32(i); + i += 4; + } + if (defaultSampleSizePresent) { + result.defaultSampleSize = view.getUint32(i); + i += 4; + } + if (defaultSampleFlagsPresent) { + result.defaultSampleFlags = view.getUint32(i); + } + if (durationIsEmpty) { + result.durationIsEmpty = true; + } + if (!baseDataOffsetPresent && defaultBaseIsMoof) { + result.baseDataOffsetIsMoof = true; + } + return result; + }, + tkhd: function tkhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + i = 4, + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)) + }; + if (result.version === 1) { + i += 4; + result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 8; + result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 4; + result.trackId = view.getUint32(i); + i += 4; + i += 8; + result.duration = view.getUint32(i); // truncating top 4 bytes + } else { + result.creationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.modificationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.trackId = view.getUint32(i); + i += 4; + i += 4; + result.duration = view.getUint32(i); + } + i += 4; + i += 2 * 4; + result.layer = view.getUint16(i); + i += 2; + result.alternateGroup = view.getUint16(i); + i += 2; + // convert fixed-point, base 16 back to a number + result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8; + i += 2; + i += 2; + result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4)); + i += 9 * 4; + result.width = view.getUint16(i) + view.getUint16(i + 2) / 16; + i += 4; + result.height = view.getUint16(i) + view.getUint16(i + 2) / 16; + return result; + }, + traf: function traf(data) { + return { + boxes: inspectMp4(data) + }; + }, + trak: function trak(data) { + return { + boxes: inspectMp4(data) + }; + }, + trex: function trex(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + trackId: view.getUint32(4), + defaultSampleDescriptionIndex: view.getUint32(8), + defaultSampleDuration: view.getUint32(12), + defaultSampleSize: view.getUint32(16), + sampleDependsOn: data[20] & 0x03, + sampleIsDependedOn: (data[21] & 0xc0) >> 6, + sampleHasRedundancy: (data[21] & 0x30) >> 4, + samplePaddingValue: (data[21] & 0x0e) >> 1, + sampleIsDifferenceSample: !!(data[21] & 0x01), + sampleDegradationPriority: view.getUint16(22) + }; + }, + trun: function trun(data) { + var result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + samples: [] + }, + view = new DataView(data.buffer, data.byteOffset, data.byteLength), + + // Flag interpretation + dataOffsetPresent = result.flags[2] & 0x01, + // compare with 2nd byte of 0x1 + firstSampleFlagsPresent = result.flags[2] & 0x04, + // compare with 2nd byte of 0x4 + sampleDurationPresent = result.flags[1] & 0x01, + // compare with 2nd byte of 0x100 + sampleSizePresent = result.flags[1] & 0x02, + // compare with 2nd byte of 0x200 + sampleFlagsPresent = result.flags[1] & 0x04, + // compare with 2nd byte of 0x400 + sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08, + // compare with 2nd byte of 0x800 + sampleCount = view.getUint32(4), + offset = 8, + sample; + + if (dataOffsetPresent) { + // 32 bit signed integer + result.dataOffset = view.getInt32(offset); + offset += 4; + } + + // Overrides the flags for the first sample only. The order of + // optional values will be: duration, size, compositionTimeOffset + if (firstSampleFlagsPresent && sampleCount) { + sample = { + flags: parseSampleFlags(data.subarray(offset, offset + 4)) + }; + offset += 4; + if (sampleDurationPresent) { + sample.duration = view.getUint32(offset); + offset += 4; + } + if (sampleSizePresent) { + sample.size = view.getUint32(offset); + offset += 4; + } + if (sampleCompositionTimeOffsetPresent) { + // Note: this should be a signed int if version is 1 + sample.compositionTimeOffset = view.getUint32(offset); + offset += 4; + } + result.samples.push(sample); + sampleCount--; + } + + while (sampleCount--) { + sample = {}; + if (sampleDurationPresent) { + sample.duration = view.getUint32(offset); + offset += 4; + } + if (sampleSizePresent) { + sample.size = view.getUint32(offset); + offset += 4; + } + if (sampleFlagsPresent) { + sample.flags = parseSampleFlags(data.subarray(offset, offset + 4)); + offset += 4; + } + if (sampleCompositionTimeOffsetPresent) { + // Note: this should be a signed int if version is 1 + sample.compositionTimeOffset = view.getUint32(offset); + offset += 4; + } + result.samples.push(sample); + } + return result; + }, + 'url ': function url(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)) + }; + }, + vmhd: function vmhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + graphicsmode: view.getUint16(4), + opcolor: new Uint16Array([view.getUint16(6), view.getUint16(8), view.getUint16(10)]) + }; + } + }; + + /** + * Return a javascript array of box objects parsed from an ISO base + * media file. + * @param data {Uint8Array} the binary data of the media to be inspected + * @return {array} a javascript array of potentially nested box objects + */ + inspectMp4 = function inspectMp4(data) { + var i = 0, + result = [], + view, + size, + type, + end, + box; + + // Convert data from Uint8Array to ArrayBuffer, to follow Dataview API + var ab = new ArrayBuffer(data.length); + var v = new Uint8Array(ab); + for (var z = 0; z < data.length; ++z) { + v[z] = data[z]; + } + view = new DataView(ab); + + while (i < data.byteLength) { + // parse box data + size = view.getUint32(i); + type = parseType$1(data.subarray(i + 4, i + 8)); + end = size > 1 ? i + size : data.byteLength; + + // parse type-specific data + box = (parse$1[type] || function (data) { + return { + data: data + }; + })(data.subarray(i + 8, end)); + box.size = size; + box.type = type; + + // store this box and move to the next + result.push(box); + i = end; + } + return result; + }; + + /** + * Returns a textual representation of the javascript represtentation + * of an MP4 file. You can use it as an alternative to + * JSON.stringify() to compare inspected MP4s. + * @param inspectedMp4 {array} the parsed array of boxes in an MP4 + * file + * @param depth {number} (optional) the number of ancestor boxes of + * the elements of inspectedMp4. Assumed to be zero if unspecified. + * @return {string} a text representation of the parsed MP4 + */ + _textifyMp = function textifyMp4(inspectedMp4, depth) { + var indent; + depth = depth || 0; + indent = new Array(depth * 2 + 1).join(' '); + + // iterate over all the boxes + return inspectedMp4.map(function (box, index) { + + // list the box type first at the current indentation level + return indent + box.type + '\n' + + + // the type is already included and handle child boxes separately + Object.keys(box).filter(function (key) { + return key !== 'type' && key !== 'boxes'; + + // output all the box properties + }).map(function (key) { + var prefix = indent + ' ' + key + ': ', + value = box[key]; + + // print out raw bytes as hexademical + if (value instanceof Uint8Array || value instanceof Uint32Array) { + var bytes = Array.prototype.slice.call(new Uint8Array(value.buffer, value.byteOffset, value.byteLength)).map(function (byte) { + return ' ' + ('00' + byte.toString(16)).slice(-2); + }).join('').match(/.{1,24}/g); + if (!bytes) { + return prefix + '<>'; + } + if (bytes.length === 1) { + return prefix + '<' + bytes.join('').slice(1) + '>'; + } + return prefix + '<\n' + bytes.map(function (line) { + return indent + ' ' + line; + }).join('\n') + '\n' + indent + ' >'; + } + + // stringify generic objects + return prefix + JSON.stringify(value, null, 2).split('\n').map(function (line, index) { + if (index === 0) { + return line; + } + return indent + ' ' + line; + }).join('\n'); + }).join('\n') + ( + + // recursively textify the child boxes + box.boxes ? '\n' + _textifyMp(box.boxes, depth + 1) : ''); + }).join('\n'); + }; + + var mp4Inspector = { + inspect: inspectMp4, + textify: _textifyMp, + parseTfdt: parse$1.tfdt, + parseHdlr: parse$1.hdlr, + parseTfhd: parse$1.tfhd, + parseTrun: parse$1.trun + }; + var mp4Inspector_1 = mp4Inspector.inspect; + var mp4Inspector_2 = mp4Inspector.textify; + var mp4Inspector_3 = mp4Inspector.parseTfdt; + var mp4Inspector_4 = mp4Inspector.parseHdlr; + var mp4Inspector_5 = mp4Inspector.parseTfhd; + var mp4Inspector_6 = mp4Inspector.parseTrun; + + var mp4Inspector$1 = /*#__PURE__*/Object.freeze({ + default: mp4Inspector, + __moduleExports: mp4Inspector, + inspect: mp4Inspector_1, + textify: mp4Inspector_2, + parseTfdt: mp4Inspector_3, + parseHdlr: mp4Inspector_4, + parseTfhd: mp4Inspector_5, + parseTrun: mp4Inspector_6 + }); + + var inspect = ( mp4Inspector$1 && mp4Inspector ) || mp4Inspector$1; + + var discardEmulationPreventionBytes$1 = cea708Parser.discardEmulationPreventionBytes; + var CaptionStream$2 = CaptionStream$1.CaptionStream; + + /** + * Maps an offset in the mdat to a sample based on the the size of the samples. + * Assumes that `parseSamples` has been called first. + * + * @param {Number} offset - The offset into the mdat + * @param {Object[]} samples - An array of samples, parsed using `parseSamples` + * @return {?Object} The matching sample, or null if no match was found. + * + * @see ISO-BMFF-12/2015, Section 8.8.8 + **/ + var mapToSample = function mapToSample(offset, samples) { + var approximateOffset = offset; + + for (var i = 0; i < samples.length; i++) { + var sample = samples[i]; + + if (approximateOffset < sample.size) { + return sample; + } + + approximateOffset -= sample.size; + } + + return null; + }; + + /** + * Finds SEI nal units contained in a Media Data Box. + * Assumes that `parseSamples` has been called first. + * + * @param {Uint8Array} avcStream - The bytes of the mdat + * @param {Object[]} samples - The samples parsed out by `parseSamples` + * @param {Number} trackId - The trackId of this video track + * @return {Object[]} seiNals - the parsed SEI NALUs found. + * The contents of the seiNal should match what is expected by + * CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts) + * + * @see ISO-BMFF-12/2015, Section 8.1.1 + * @see Rec. ITU-T H.264, 7.3.2.3.1 + **/ + var findSeiNals = function findSeiNals(avcStream, samples, trackId) { + var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength), + result = [], + seiNal, + i, + length, + lastMatchedSample; + + for (i = 0; i + 4 < avcStream.length; i += length) { + length = avcView.getUint32(i); + i += 4; + + // Bail if this doesn't appear to be an H264 stream + if (length <= 0) { + continue; + } + + switch (avcStream[i] & 0x1F) { + case 0x06: + var data = avcStream.subarray(i + 1, i + 1 + length); + var matchingSample = mapToSample(i, samples); + + seiNal = { + nalUnitType: 'sei_rbsp', + size: length, + data: data, + escapedRBSP: discardEmulationPreventionBytes$1(data), + trackId: trackId + }; + + if (matchingSample) { + seiNal.pts = matchingSample.pts; + seiNal.dts = matchingSample.dts; + lastMatchedSample = matchingSample; + } else { + // If a matching sample cannot be found, use the last + // sample's values as they should be as close as possible + seiNal.pts = lastMatchedSample.pts; + seiNal.dts = lastMatchedSample.dts; + } + + result.push(seiNal); + break; + default: + break; + } + } + + return result; + }; + + /** + * Parses sample information out of Track Run Boxes and calculates + * the absolute presentation and decode timestamps of each sample. + * + * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed + * @param {Number} baseMediaDecodeTime - base media decode time from tfdt + @see ISO-BMFF-12/2015, Section 8.8.12 + * @param {Object} tfhd - The parsed Track Fragment Header + * @see inspect.parseTfhd + * @return {Object[]} the parsed samples + * + * @see ISO-BMFF-12/2015, Section 8.8.8 + **/ + var parseSamples = function parseSamples(truns, baseMediaDecodeTime, tfhd) { + var currentDts = baseMediaDecodeTime; + var defaultSampleDuration = tfhd.defaultSampleDuration || 0; + var defaultSampleSize = tfhd.defaultSampleSize || 0; + var trackId = tfhd.trackId; + var allSamples = []; + + truns.forEach(function (trun) { + // Note: We currently do not parse the sample table as well + // as the trun. It's possible some sources will require this. + // moov > trak > mdia > minf > stbl + var trackRun = inspect.parseTrun(trun); + var samples = trackRun.samples; + + samples.forEach(function (sample) { + if (sample.duration === undefined) { + sample.duration = defaultSampleDuration; + } + if (sample.size === undefined) { + sample.size = defaultSampleSize; + } + sample.trackId = trackId; + sample.dts = currentDts; + if (sample.compositionTimeOffset === undefined) { + sample.compositionTimeOffset = 0; + } + sample.pts = currentDts + sample.compositionTimeOffset; + + currentDts += sample.duration; + }); + + allSamples = allSamples.concat(samples); + }); + + return allSamples; + }; + + /** + * Parses out caption nals from an FMP4 segment's video tracks. + * + * @param {Uint8Array} segment - The bytes of a single segment + * @param {Number} videoTrackId - The trackId of a video track in the segment + * @return {Object.<Number, Object[]>} A mapping of video trackId to + * a list of seiNals found in that track + **/ + var parseCaptionNals = function parseCaptionNals(segment, videoTrackId) { + // To get the samples + var trafs = probe.findBox(segment, ['moof', 'traf']); + // To get SEI NAL units + var mdats = probe.findBox(segment, ['mdat']); + var captionNals = {}; + var mdatTrafPairs = []; + + // Pair up each traf with a mdat as moofs and mdats are in pairs + mdats.forEach(function (mdat, index) { + var matchingTraf = trafs[index]; + mdatTrafPairs.push({ + mdat: mdat, + traf: matchingTraf + }); + }); + + mdatTrafPairs.forEach(function (pair) { + var mdat = pair.mdat; + var traf = pair.traf; + var tfhd = probe.findBox(traf, ['tfhd']); + // Exactly 1 tfhd per traf + var headerInfo = inspect.parseTfhd(tfhd[0]); + var trackId = headerInfo.trackId; + var tfdt = probe.findBox(traf, ['tfdt']); + // Either 0 or 1 tfdt per traf + var baseMediaDecodeTime = tfdt.length > 0 ? inspect.parseTfdt(tfdt[0]).baseMediaDecodeTime : 0; + var truns = probe.findBox(traf, ['trun']); + var samples; + var seiNals; + + // Only parse video data for the chosen video track + if (videoTrackId === trackId && truns.length > 0) { + samples = parseSamples(truns, baseMediaDecodeTime, headerInfo); + + seiNals = findSeiNals(mdat, samples, trackId); + + if (!captionNals[trackId]) { + captionNals[trackId] = []; + } + + captionNals[trackId] = captionNals[trackId].concat(seiNals); + } + }); + + return captionNals; + }; + + /** + * Parses out inband captions from an MP4 container and returns + * caption objects that can be used by WebVTT and the TextTrack API. + * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue + * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack + * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first + * + * @param {Uint8Array} segment - The fmp4 segment containing embedded captions + * @param {Number} trackId - The id of the video track to parse + * @param {Number} timescale - The timescale for the video track from the init segment + * + * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks + * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds + * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds + * @return {String} parsedCaptions[].text - The visible content of the caption + **/ + var parseEmbeddedCaptions = function parseEmbeddedCaptions(segment, trackId, timescale) { + var seiNals; + + if (!trackId) { + return null; + } + + seiNals = parseCaptionNals(segment, trackId); + + return { + seiNals: seiNals[trackId], + timescale: timescale + }; + }; + + /** + * Converts SEI NALUs into captions that can be used by video.js + **/ + var CaptionParser = function CaptionParser() { + var isInitialized = false; + var captionStream; + + // Stores segments seen before trackId and timescale are set + var segmentCache; + // Stores video track ID of the track being parsed + var trackId; + // Stores the timescale of the track being parsed + var timescale; + // Stores captions parsed so far + var parsedCaptions; + + /** + * A method to indicate whether a CaptionParser has been initalized + * @returns {Boolean} + **/ + this.isInitialized = function () { + return isInitialized; + }; + + /** + * Initializes the underlying CaptionStream, SEI NAL parsing + * and management, and caption collection + **/ + this.init = function () { + captionStream = new CaptionStream$2(); + isInitialized = true; + + // Collect dispatched captions + captionStream.on('data', function (event) { + // Convert to seconds in the source's timescale + event.startTime = event.startPts / timescale; + event.endTime = event.endPts / timescale; + + parsedCaptions.captions.push(event); + parsedCaptions.captionStreams[event.stream] = true; + }); + }; + + /** + * Determines if a new video track will be selected + * or if the timescale changed + * @return {Boolean} + **/ + this.isNewInit = function (videoTrackIds, timescales) { + if (videoTrackIds && videoTrackIds.length === 0 || timescales && (typeof timescales === 'undefined' ? 'undefined' : _typeof(timescales)) === 'object' && Object.keys(timescales).length === 0) { + return false; + } + + return trackId !== videoTrackIds[0] || timescale !== timescales[trackId]; + }; + + /** + * Parses out SEI captions and interacts with underlying + * CaptionStream to return dispatched captions + * + * @param {Uint8Array} segment - The fmp4 segment containing embedded captions + * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment + * @param {Object.<Number, Number>} timescales - The timescales found in the init segment + * @see parseEmbeddedCaptions + * @see m2ts/caption-stream.js + **/ + this.parse = function (segment, videoTrackIds, timescales) { + var parsedData; + + if (!this.isInitialized()) { + return null; + + // This is not likely to be a video segment + } else if (!videoTrackIds || !timescales) { + return null; + } else if (this.isNewInit(videoTrackIds, timescales)) { + // Use the first video track only as there is no + // mechanism to switch to other video tracks + trackId = videoTrackIds[0]; + timescale = timescales[trackId]; + + // If an init segment has not been seen yet, hold onto segment + // data until we have one + } else if (!trackId || !timescale) { + segmentCache.push(segment); + return null; + } + + // Now that a timescale and trackId is set, parse cached segments + while (segmentCache.length > 0) { + var cachedSegment = segmentCache.shift(); + + this.parse(cachedSegment, videoTrackIds, timescales); + } + + parsedData = parseEmbeddedCaptions(segment, trackId, timescale); + + if (parsedData === null || !parsedData.seiNals) { + return null; + } + + this.pushNals(parsedData.seiNals); + // Force the parsed captions to be dispatched + this.flushStream(); + + return parsedCaptions; + }; + + /** + * Pushes SEI NALUs onto CaptionStream + * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals` + * Assumes that `parseCaptionNals` has been called first + * @see m2ts/caption-stream.js + **/ + this.pushNals = function (nals) { + if (!this.isInitialized() || !nals || nals.length === 0) { + return null; + } + + nals.forEach(function (nal) { + captionStream.push(nal); + }); + }; + + /** + * Flushes underlying CaptionStream to dispatch processed, displayable captions + * @see m2ts/caption-stream.js + **/ + this.flushStream = function () { + if (!this.isInitialized()) { + return null; + } + + captionStream.flush(); + }; + + /** + * Reset caption buckets for new data + **/ + this.clearParsedCaptions = function () { + parsedCaptions.captions = []; + parsedCaptions.captionStreams = {}; + }; + + /** + * Resets underlying CaptionStream + * @see m2ts/caption-stream.js + **/ + this.resetCaptionStream = function () { + if (!this.isInitialized()) { + return null; + } + + captionStream.reset(); + }; + + /** + * Convenience method to clear all captions flushed from the + * CaptionStream and still being parsed + * @see m2ts/caption-stream.js + **/ + this.clearAllCaptions = function () { + this.clearParsedCaptions(); + this.resetCaptionStream(); + }; + + /** + * Reset caption parser + **/ + this.reset = function () { + segmentCache = []; + trackId = null; + timescale = null; + + if (!parsedCaptions) { + parsedCaptions = { + captions: [], + // CC1, CC2, CC3, CC4 + captionStreams: {} + }; + } else { + this.clearParsedCaptions(); + } + + this.resetCaptionStream(); + }; + + this.reset(); + }; + + var captionParser = CaptionParser; + + var captionParser$1 = /*#__PURE__*/Object.freeze({ + default: captionParser, + __moduleExports: captionParser + }); + + var require$$2$1 = ( transmuxer$1 && transmuxer ) || transmuxer$1; + + var require$$3 = ( captionParser$1 && captionParser ) || captionParser$1; + + var mp4$1 = { + generator: mp4, + probe: probe, + Transmuxer: require$$2$1.Transmuxer, + AudioSegmentStream: require$$2$1.AudioSegmentStream, + VideoSegmentStream: require$$2$1.VideoSegmentStream, + CaptionParser: require$$3 + }; + var mp4_6 = mp4$1.CaptionParser; + + var parsePid = function parsePid(packet) { + var pid = packet[1] & 0x1f; + pid <<= 8; + pid |= packet[2]; + return pid; + }; + + var parsePayloadUnitStartIndicator = function parsePayloadUnitStartIndicator(packet) { + return !!(packet[1] & 0x40); + }; + + var parseAdaptionField = function parseAdaptionField(packet) { + var offset = 0; + // if an adaption field is present, its length is specified by the + // fifth byte of the TS packet header. The adaptation field is + // used to add stuffing to PES packets that don't fill a complete + // TS packet, and to specify some forms of timing and control data + // that we do not currently use. + if ((packet[3] & 0x30) >>> 4 > 0x01) { + offset += packet[4] + 1; + } + return offset; + }; + + var parseType$2 = function parseType(packet, pmtPid) { + var pid = parsePid(packet); + if (pid === 0) { + return 'pat'; + } else if (pid === pmtPid) { + return 'pmt'; + } else if (pmtPid) { + return 'pes'; + } + return null; + }; + + var parsePat = function parsePat(packet) { + var pusi = parsePayloadUnitStartIndicator(packet); + var offset = 4 + parseAdaptionField(packet); + + if (pusi) { + offset += packet[offset] + 1; + } + + return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11]; + }; + + var parsePmt = function parsePmt(packet) { + var programMapTable = {}; + var pusi = parsePayloadUnitStartIndicator(packet); + var payloadOffset = 4 + parseAdaptionField(packet); + + if (pusi) { + payloadOffset += packet[payloadOffset] + 1; + } + + // PMTs can be sent ahead of the time when they should actually + // take effect. We don't believe this should ever be the case + // for HLS but we'll ignore "forward" PMT declarations if we see + // them. Future PMT declarations have the current_next_indicator + // set to zero. + if (!(packet[payloadOffset + 5] & 0x01)) { + return; + } + + var sectionLength, tableEnd, programInfoLength; + // the mapping table ends at the end of the current section + sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2]; + tableEnd = 3 + sectionLength - 4; + + // to determine where the table is, we have to figure out how + // long the program info descriptors are + programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; + + // advance the offset to the first entry in the mapping table + var offset = 12 + programInfoLength; + while (offset < tableEnd) { + var i = payloadOffset + offset; + // add an entry that maps the elementary_pid to the stream_type + programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; + + // move to the next table entry + // skip past the elementary stream descriptors, if present + offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5; + } + return programMapTable; + }; + + var parsePesType = function parsePesType(packet, programMapTable) { + var pid = parsePid(packet); + var type = programMapTable[pid]; + switch (type) { + case StreamTypes.H264_STREAM_TYPE: + return 'video'; + case StreamTypes.ADTS_STREAM_TYPE: + return 'audio'; + case StreamTypes.METADATA_STREAM_TYPE: + return 'timed-metadata'; + default: + return null; + } + }; + + var parsePesTime = function parsePesTime(packet) { + var pusi = parsePayloadUnitStartIndicator(packet); + if (!pusi) { + return null; + } + + var offset = 4 + parseAdaptionField(packet); + + if (offset >= packet.byteLength) { + // From the H 222.0 MPEG-TS spec + // "For transport stream packets carrying PES packets, stuffing is needed when there + // is insufficient PES packet data to completely fill the transport stream packet + // payload bytes. Stuffing is accomplished by defining an adaptation field longer than + // the sum of the lengths of the data elements in it, so that the payload bytes + // remaining after the adaptation field exactly accommodates the available PES packet + // data." + // + // If the offset is >= the length of the packet, then the packet contains no data + // and instead is just adaption field stuffing bytes + return null; + } + + var pes = null; + var ptsDtsFlags; + + // PES packets may be annotated with a PTS value, or a PTS value + // and a DTS value. Determine what combination of values is + // available to work with. + ptsDtsFlags = packet[offset + 7]; + + // PTS and DTS are normally stored as a 33-bit number. Javascript + // performs all bitwise operations on 32-bit integers but javascript + // supports a much greater range (52-bits) of integer using standard + // mathematical operations. + // We construct a 31-bit value using bitwise operators over the 31 + // most significant bits and then multiply by 4 (equal to a left-shift + // of 2) before we add the final 2 least significant bits of the + // timestamp (equal to an OR.) + if (ptsDtsFlags & 0xC0) { + pes = {}; + // the PTS and DTS are not written out directly. For information + // on how they are encoded, see + // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html + pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3; + pes.pts *= 4; // Left shift by 2 + pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs + pes.dts = pes.pts; + if (ptsDtsFlags & 0x40) { + pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3; + pes.dts *= 4; // Left shift by 2 + pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs + } + } + return pes; + }; + + var parseNalUnitType = function parseNalUnitType(type) { + switch (type) { + case 0x05: + return 'slice_layer_without_partitioning_rbsp_idr'; + case 0x06: + return 'sei_rbsp'; + case 0x07: + return 'seq_parameter_set_rbsp'; + case 0x08: + return 'pic_parameter_set_rbsp'; + case 0x09: + return 'access_unit_delimiter_rbsp'; + default: + return null; + } + }; + + var videoPacketContainsKeyFrame = function videoPacketContainsKeyFrame(packet) { + var offset = 4 + parseAdaptionField(packet); + var frameBuffer = packet.subarray(offset); + var frameI = 0; + var frameSyncPoint = 0; + var foundKeyFrame = false; + var nalType; + + // advance the sync point to a NAL start, if necessary + for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) { + if (frameBuffer[frameSyncPoint + 2] === 1) { + // the sync point is properly aligned + frameI = frameSyncPoint + 5; + break; + } + } + + while (frameI < frameBuffer.byteLength) { + // look at the current byte to determine if we've hit the end of + // a NAL unit boundary + switch (frameBuffer[frameI]) { + case 0: + // skip past non-sync sequences + if (frameBuffer[frameI - 1] !== 0) { + frameI += 2; + break; + } else if (frameBuffer[frameI - 2] !== 0) { + frameI++; + break; + } + + if (frameSyncPoint + 3 !== frameI - 2) { + nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f); + if (nalType === 'slice_layer_without_partitioning_rbsp_idr') { + foundKeyFrame = true; + } + } + + // drop trailing zeroes + do { + frameI++; + } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length); + frameSyncPoint = frameI - 2; + frameI += 3; + break; + case 1: + // skip past non-sync sequences + if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) { + frameI += 3; + break; + } + + nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f); + if (nalType === 'slice_layer_without_partitioning_rbsp_idr') { + foundKeyFrame = true; + } + frameSyncPoint = frameI - 2; + frameI += 3; + break; + default: + // the current byte isn't a one or zero, so it cannot be part + // of a sync sequence + frameI += 3; + break; + } + } + frameBuffer = frameBuffer.subarray(frameSyncPoint); + frameI -= frameSyncPoint; + frameSyncPoint = 0; + // parse the final nal + if (frameBuffer && frameBuffer.byteLength > 3) { + nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f); + if (nalType === 'slice_layer_without_partitioning_rbsp_idr') { + foundKeyFrame = true; + } + } + + return foundKeyFrame; + }; + + var probe$1 = { + parseType: parseType$2, + parsePat: parsePat, + parsePmt: parsePmt, + parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator, + parsePesType: parsePesType, + parsePesTime: parsePesTime, + videoPacketContainsKeyFrame: videoPacketContainsKeyFrame + }; + var probe_1$1 = probe$1.parseType; + var probe_2$1 = probe$1.parsePat; + var probe_3$1 = probe$1.parsePmt; + var probe_4$1 = probe$1.parsePayloadUnitStartIndicator; + var probe_5$1 = probe$1.parsePesType; + var probe_6 = probe$1.parsePesTime; + var probe_7 = probe$1.videoPacketContainsKeyFrame; + + var probe$2 = /*#__PURE__*/Object.freeze({ + default: probe$1, + __moduleExports: probe$1, + parseType: probe_1$1, + parsePat: probe_2$1, + parsePmt: probe_3$1, + parsePayloadUnitStartIndicator: probe_4$1, + parsePesType: probe_5$1, + parsePesTime: probe_6, + videoPacketContainsKeyFrame: probe_7 + }); + + /** + * mux.js + * + * Copyright (c) 2016 Brightcove + * All rights reserved. + * + * Utilities to detect basic properties and metadata about Aac data. + */ + + var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350]; + + var parseSyncSafeInteger$1 = function parseSyncSafeInteger(data) { + return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3]; + }; + + // return a percent-encoded representation of the specified byte range + // @see http://en.wikipedia.org/wiki/Percent-encoding + var percentEncode$1 = function percentEncode(bytes, start, end) { + var i, + result = ''; + for (i = start; i < end; i++) { + result += '%' + ('00' + bytes[i].toString(16)).slice(-2); + } + return result; + }; + + // return the string representation of the specified byte range, + // interpreted as ISO-8859-1. + var parseIso88591$1 = function parseIso88591(bytes, start, end) { + return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line + }; + + var parseId3TagSize = function parseId3TagSize(header, byteIndex) { + var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9], + flags = header[byteIndex + 5], + footerPresent = (flags & 16) >> 4; + + if (footerPresent) { + return returnSize + 20; + } + return returnSize + 10; + }; + + var parseAdtsSize = function parseAdtsSize(header, byteIndex) { + var lowThree = (header[byteIndex + 5] & 0xE0) >> 5, + middle = header[byteIndex + 4] << 3, + highTwo = header[byteIndex + 3] & 0x3 << 11; + + return highTwo | middle | lowThree; + }; + + var parseType$3 = function parseType(header, byteIndex) { + if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) { + return 'timed-metadata'; + } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) { + return 'audio'; + } + return null; + }; + + var parseSampleRate = function parseSampleRate(packet) { + var i = 0; + + while (i + 5 < packet.length) { + if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) { + // If a valid header was not found, jump one forward and attempt to + // find a valid ADTS header starting at the next byte + i++; + continue; + } + return ADTS_SAMPLING_FREQUENCIES$1[(packet[i + 2] & 0x3c) >>> 2]; + } + + return null; + }; + + var parseAacTimestamp = function parseAacTimestamp(packet) { + var frameStart, frameSize, frame, frameHeader; + + // find the start of the first frame and the end of the tag + frameStart = 10; + if (packet[5] & 0x40) { + // advance the frame start past the extended header + frameStart += 4; // header size field + frameStart += parseSyncSafeInteger$1(packet.subarray(10, 14)); + } + + // parse one or more ID3 frames + // http://id3.org/id3v2.3.0#ID3v2_frame_overview + do { + // determine the number of bytes in this frame + frameSize = parseSyncSafeInteger$1(packet.subarray(frameStart + 4, frameStart + 8)); + if (frameSize < 1) { + return null; + } + frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]); + + if (frameHeader === 'PRIV') { + frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10); + + for (var i = 0; i < frame.byteLength; i++) { + if (frame[i] === 0) { + var owner = parseIso88591$1(frame, 0, i); + if (owner === 'com.apple.streaming.transportStreamTimestamp') { + var d = frame.subarray(i + 1); + var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2; + size *= 4; + size += d[7] & 0x03; + + return size; + } + break; + } + } + } + + frameStart += 10; // advance past the frame header + frameStart += frameSize; // advance past the frame body + } while (frameStart < packet.byteLength); + return null; + }; + + var probe$3 = { + parseId3TagSize: parseId3TagSize, + parseAdtsSize: parseAdtsSize, + parseType: parseType$3, + parseSampleRate: parseSampleRate, + parseAacTimestamp: parseAacTimestamp + }; + var probe_1$2 = probe$3.parseId3TagSize; + var probe_2$2 = probe$3.parseAdtsSize; + var probe_3$2 = probe$3.parseType; + var probe_4$2 = probe$3.parseSampleRate; + var probe_5$2 = probe$3.parseAacTimestamp; + + var probe$4 = /*#__PURE__*/Object.freeze({ + default: probe$3, + __moduleExports: probe$3, + parseId3TagSize: probe_1$2, + parseAdtsSize: probe_2$2, + parseType: probe_3$2, + parseSampleRate: probe_4$2, + parseAacTimestamp: probe_5$2 + }); + + var require$$1$2 = ( probe$2 && probe$1 ) || probe$2; + + var require$$2$2 = ( probe$4 && probe$3 ) || probe$4; + + var handleRollover$1 = require$$0$2.handleRollover; + var probe$5 = {}; + probe$5.ts = require$$1$2; + probe$5.aac = require$$2$2; + + var PES_TIMESCALE = 90000, + MP2T_PACKET_LENGTH$1 = 188, + // bytes + SYNC_BYTE$1 = 0x47; + + var isLikelyAacData$1 = function isLikelyAacData(data) { + if (data[0] === 'I'.charCodeAt(0) && data[1] === 'D'.charCodeAt(0) && data[2] === '3'.charCodeAt(0)) { + return true; + } + return false; + }; + + /** + * walks through segment data looking for pat and pmt packets to parse out + * program map table information + */ + var parsePsi_ = function parsePsi_(bytes, pmt) { + var startIndex = 0, + endIndex = MP2T_PACKET_LENGTH$1, + packet, + type; + + while (endIndex < bytes.byteLength) { + // Look for a pair of start and end sync bytes in the data.. + if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) { + // We found a packet + packet = bytes.subarray(startIndex, endIndex); + type = probe$5.ts.parseType(packet, pmt.pid); + + switch (type) { + case 'pat': + if (!pmt.pid) { + pmt.pid = probe$5.ts.parsePat(packet); + } + break; + case 'pmt': + if (!pmt.table) { + pmt.table = probe$5.ts.parsePmt(packet); + } + break; + default: + break; + } + + // Found the pat and pmt, we can stop walking the segment + if (pmt.pid && pmt.table) { + return; + } + + startIndex += MP2T_PACKET_LENGTH$1; + endIndex += MP2T_PACKET_LENGTH$1; + continue; + } + + // If we get here, we have somehow become de-synchronized and we need to step + // forward one byte at a time until we find a pair of sync bytes that denote + // a packet + startIndex++; + endIndex++; + } + }; + + /** + * walks through the segment data from the start and end to get timing information + * for the first and last audio pes packets + */ + var parseAudioPes_ = function parseAudioPes_(bytes, pmt, result) { + var startIndex = 0, + endIndex = MP2T_PACKET_LENGTH$1, + packet, + type, + pesType, + pusi, + parsed; + + var endLoop = false; + + // Start walking from start of segment to get first audio packet + while (endIndex < bytes.byteLength) { + // Look for a pair of start and end sync bytes in the data.. + if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) { + // We found a packet + packet = bytes.subarray(startIndex, endIndex); + type = probe$5.ts.parseType(packet, pmt.pid); + + switch (type) { + case 'pes': + pesType = probe$5.ts.parsePesType(packet, pmt.table); + pusi = probe$5.ts.parsePayloadUnitStartIndicator(packet); + if (pesType === 'audio' && pusi) { + parsed = probe$5.ts.parsePesTime(packet); + if (parsed) { + parsed.type = 'audio'; + result.audio.push(parsed); + endLoop = true; + } + } + break; + default: + break; + } + + if (endLoop) { + break; + } + + startIndex += MP2T_PACKET_LENGTH$1; + endIndex += MP2T_PACKET_LENGTH$1; + continue; + } + + // If we get here, we have somehow become de-synchronized and we need to step + // forward one byte at a time until we find a pair of sync bytes that denote + // a packet + startIndex++; + endIndex++; + } + + // Start walking from end of segment to get last audio packet + endIndex = bytes.byteLength; + startIndex = endIndex - MP2T_PACKET_LENGTH$1; + endLoop = false; + while (startIndex >= 0) { + // Look for a pair of start and end sync bytes in the data.. + if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) { + // We found a packet + packet = bytes.subarray(startIndex, endIndex); + type = probe$5.ts.parseType(packet, pmt.pid); + + switch (type) { + case 'pes': + pesType = probe$5.ts.parsePesType(packet, pmt.table); + pusi = probe$5.ts.parsePayloadUnitStartIndicator(packet); + if (pesType === 'audio' && pusi) { + parsed = probe$5.ts.parsePesTime(packet); + if (parsed) { + parsed.type = 'audio'; + result.audio.push(parsed); + endLoop = true; + } + } + break; + default: + break; + } + + if (endLoop) { + break; + } + + startIndex -= MP2T_PACKET_LENGTH$1; + endIndex -= MP2T_PACKET_LENGTH$1; + continue; + } + + // If we get here, we have somehow become de-synchronized and we need to step + // forward one byte at a time until we find a pair of sync bytes that denote + // a packet + startIndex--; + endIndex--; + } + }; + + /** + * walks through the segment data from the start and end to get timing information + * for the first and last video pes packets as well as timing information for the first + * key frame. + */ + var parseVideoPes_ = function parseVideoPes_(bytes, pmt, result) { + var startIndex = 0, + endIndex = MP2T_PACKET_LENGTH$1, + packet, + type, + pesType, + pusi, + parsed, + frame, + i, + pes; + + var endLoop = false; + + var currentFrame = { + data: [], + size: 0 + }; + + // Start walking from start of segment to get first video packet + while (endIndex < bytes.byteLength) { + // Look for a pair of start and end sync bytes in the data.. + if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) { + // We found a packet + packet = bytes.subarray(startIndex, endIndex); + type = probe$5.ts.parseType(packet, pmt.pid); + + switch (type) { + case 'pes': + pesType = probe$5.ts.parsePesType(packet, pmt.table); + pusi = probe$5.ts.parsePayloadUnitStartIndicator(packet); + if (pesType === 'video') { + if (pusi && !endLoop) { + parsed = probe$5.ts.parsePesTime(packet); + if (parsed) { + parsed.type = 'video'; + result.video.push(parsed); + endLoop = true; + } + } + if (!result.firstKeyFrame) { + if (pusi) { + if (currentFrame.size !== 0) { + frame = new Uint8Array(currentFrame.size); + i = 0; + while (currentFrame.data.length) { + pes = currentFrame.data.shift(); + frame.set(pes, i); + i += pes.byteLength; + } + if (probe$5.ts.videoPacketContainsKeyFrame(frame)) { + result.firstKeyFrame = probe$5.ts.parsePesTime(frame); + result.firstKeyFrame.type = 'video'; + } + currentFrame.size = 0; + } + } + currentFrame.data.push(packet); + currentFrame.size += packet.byteLength; + } + } + break; + default: + break; + } + + if (endLoop && result.firstKeyFrame) { + break; + } + + startIndex += MP2T_PACKET_LENGTH$1; + endIndex += MP2T_PACKET_LENGTH$1; + continue; + } + + // If we get here, we have somehow become de-synchronized and we need to step + // forward one byte at a time until we find a pair of sync bytes that denote + // a packet + startIndex++; + endIndex++; + } + + // Start walking from end of segment to get last video packet + endIndex = bytes.byteLength; + startIndex = endIndex - MP2T_PACKET_LENGTH$1; + endLoop = false; + while (startIndex >= 0) { + // Look for a pair of start and end sync bytes in the data.. + if (bytes[startIndex] === SYNC_BYTE$1 && bytes[endIndex] === SYNC_BYTE$1) { + // We found a packet + packet = bytes.subarray(startIndex, endIndex); + type = probe$5.ts.parseType(packet, pmt.pid); + + switch (type) { + case 'pes': + pesType = probe$5.ts.parsePesType(packet, pmt.table); + pusi = probe$5.ts.parsePayloadUnitStartIndicator(packet); + if (pesType === 'video' && pusi) { + parsed = probe$5.ts.parsePesTime(packet); + if (parsed) { + parsed.type = 'video'; + result.video.push(parsed); + endLoop = true; + } + } + break; + default: + break; + } + + if (endLoop) { + break; + } + + startIndex -= MP2T_PACKET_LENGTH$1; + endIndex -= MP2T_PACKET_LENGTH$1; + continue; + } + + // If we get here, we have somehow become de-synchronized and we need to step + // forward one byte at a time until we find a pair of sync bytes that denote + // a packet + startIndex--; + endIndex--; + } + }; + + /** + * Adjusts the timestamp information for the segment to account for + * rollover and convert to seconds based on pes packet timescale (90khz clock) + */ + var adjustTimestamp_ = function adjustTimestamp_(segmentInfo, baseTimestamp) { + if (segmentInfo.audio && segmentInfo.audio.length) { + var audioBaseTimestamp = baseTimestamp; + if (typeof audioBaseTimestamp === 'undefined') { + audioBaseTimestamp = segmentInfo.audio[0].dts; + } + segmentInfo.audio.forEach(function (info) { + info.dts = handleRollover$1(info.dts, audioBaseTimestamp); + info.pts = handleRollover$1(info.pts, audioBaseTimestamp); + // time in seconds + info.dtsTime = info.dts / PES_TIMESCALE; + info.ptsTime = info.pts / PES_TIMESCALE; + }); + } + + if (segmentInfo.video && segmentInfo.video.length) { + var videoBaseTimestamp = baseTimestamp; + if (typeof videoBaseTimestamp === 'undefined') { + videoBaseTimestamp = segmentInfo.video[0].dts; + } + segmentInfo.video.forEach(function (info) { + info.dts = handleRollover$1(info.dts, videoBaseTimestamp); + info.pts = handleRollover$1(info.pts, videoBaseTimestamp); + // time in seconds + info.dtsTime = info.dts / PES_TIMESCALE; + info.ptsTime = info.pts / PES_TIMESCALE; + }); + if (segmentInfo.firstKeyFrame) { + var frame = segmentInfo.firstKeyFrame; + frame.dts = handleRollover$1(frame.dts, videoBaseTimestamp); + frame.pts = handleRollover$1(frame.pts, videoBaseTimestamp); + // time in seconds + frame.dtsTime = frame.dts / PES_TIMESCALE; + frame.ptsTime = frame.dts / PES_TIMESCALE; + } + } + }; + + /** + * inspects the aac data stream for start and end time information + */ + var inspectAac_ = function inspectAac_(bytes) { + var endLoop = false, + audioCount = 0, + sampleRate = null, + timestamp = null, + frameSize = 0, + byteIndex = 0, + packet; + + while (bytes.length - byteIndex >= 3) { + var type = probe$5.aac.parseType(bytes, byteIndex); + switch (type) { + case 'timed-metadata': + // Exit early because we don't have enough to parse + // the ID3 tag header + if (bytes.length - byteIndex < 10) { + endLoop = true; + break; + } + + frameSize = probe$5.aac.parseId3TagSize(bytes, byteIndex); + + // Exit early if we don't have enough in the buffer + // to emit a full packet + if (frameSize > bytes.length) { + endLoop = true; + break; + } + if (timestamp === null) { + packet = bytes.subarray(byteIndex, byteIndex + frameSize); + timestamp = probe$5.aac.parseAacTimestamp(packet); + } + byteIndex += frameSize; + break; + case 'audio': + // Exit early because we don't have enough to parse + // the ADTS frame header + if (bytes.length - byteIndex < 7) { + endLoop = true; + break; + } + + frameSize = probe$5.aac.parseAdtsSize(bytes, byteIndex); + + // Exit early if we don't have enough in the buffer + // to emit a full packet + if (frameSize > bytes.length) { + endLoop = true; + break; + } + if (sampleRate === null) { + packet = bytes.subarray(byteIndex, byteIndex + frameSize); + sampleRate = probe$5.aac.parseSampleRate(packet); + } + audioCount++; + byteIndex += frameSize; + break; + default: + byteIndex++; + break; + } + if (endLoop) { + return null; + } + } + if (sampleRate === null || timestamp === null) { + return null; + } + + var audioTimescale = PES_TIMESCALE / sampleRate; + + var result = { + audio: [{ + type: 'audio', + dts: timestamp, + pts: timestamp + }, { + type: 'audio', + dts: timestamp + audioCount * 1024 * audioTimescale, + pts: timestamp + audioCount * 1024 * audioTimescale + }] + }; + + return result; + }; + + /** + * inspects the transport stream segment data for start and end time information + * of the audio and video tracks (when present) as well as the first key frame's + * start time. + */ + var inspectTs_ = function inspectTs_(bytes) { + var pmt = { + pid: null, + table: null + }; + + var result = {}; + + parsePsi_(bytes, pmt); + + for (var pid in pmt.table) { + if (pmt.table.hasOwnProperty(pid)) { + var type = pmt.table[pid]; + switch (type) { + case StreamTypes.H264_STREAM_TYPE: + result.video = []; + parseVideoPes_(bytes, pmt, result); + if (result.video.length === 0) { + delete result.video; + } + break; + case StreamTypes.ADTS_STREAM_TYPE: + result.audio = []; + parseAudioPes_(bytes, pmt, result); + if (result.audio.length === 0) { + delete result.audio; + } + break; + default: + break; + } + } + } + return result; + }; + + /** + * Inspects segment byte data and returns an object with start and end timing information + * + * @param {Uint8Array} bytes The segment byte data + * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame + * timestamps for rollover. This value must be in 90khz clock. + * @return {Object} Object containing start and end frame timing info of segment. + */ + var inspect$1 = function inspect(bytes, baseTimestamp) { + var isAacData = isLikelyAacData$1(bytes); + + var result; + + if (isAacData) { + result = inspectAac_(bytes); + } else { + result = inspectTs_(bytes); + } + + if (!result || !result.audio && !result.video) { + return null; + } + + adjustTimestamp_(result, baseTimestamp); + + return result; + }; + + var tsInspector = { + inspect: inspect$1 + }; + + /* + * pkcs7.pad + * https://github.com/brightcove/pkcs7 + * + * Copyright (c) 2014 Brightcove + * Licensed under the apache2 license. + */ + + /** + * Returns the subarray of a Uint8Array without PKCS#7 padding. + * @param padded {Uint8Array} unencrypted bytes that have been padded + * @return {Uint8Array} the unpadded bytes + * @see http://tools.ietf.org/html/rfc5652 + */ + function unpad(padded) { + return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]); + } + + var classCallCheck$2 = function classCallCheck$$1(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + }; + + var createClass$1 = function () { + function defineProperties(target, props) { + for (var i = 0; i < props.length; i++) { + var descriptor = props[i]; + descriptor.enumerable = descriptor.enumerable || false; + descriptor.configurable = true; + if ("value" in descriptor) descriptor.writable = true; + Object.defineProperty(target, descriptor.key, descriptor); + } + } + + return function (Constructor, protoProps, staticProps) { + if (protoProps) defineProperties(Constructor.prototype, protoProps); + if (staticProps) defineProperties(Constructor, staticProps); + return Constructor; + }; + }(); + + var inherits$2 = function inherits$$1(subClass, superClass) { + if (typeof superClass !== "function" && superClass !== null) { + throw new TypeError("Super expression must either be null or a function, not " + (typeof superClass === "undefined" ? "undefined" : _typeof(superClass))); + } + + subClass.prototype = Object.create(superClass && superClass.prototype, { + constructor: { + value: subClass, + enumerable: false, + writable: true, + configurable: true + } + }); + if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; + }; + + var possibleConstructorReturn$2 = function possibleConstructorReturn$$1(self, call) { + if (!self) { + throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); + } + + return call && ((typeof call === "undefined" ? "undefined" : _typeof(call)) === "object" || typeof call === "function") ? call : self; + }; + + /** + * @file aes.js + * + * This file contains an adaptation of the AES decryption algorithm + * from the Standford Javascript Cryptography Library. That work is + * covered by the following copyright and permissions notice: + * + * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation + * are those of the authors and should not be interpreted as representing + * official policies, either expressed or implied, of the authors. + */ + + /** + * Expand the S-box tables. + * + * @private + */ + var precompute = function precompute() { + var tables = [[[], [], [], [], []], [[], [], [], [], []]]; + var encTable = tables[0]; + var decTable = tables[1]; + var sbox = encTable[4]; + var sboxInv = decTable[4]; + var i = void 0; + var x = void 0; + var xInv = void 0; + var d = []; + var th = []; + var x2 = void 0; + var x4 = void 0; + var x8 = void 0; + var s = void 0; + var tEnc = void 0; + var tDec = void 0; + + // Compute double and third tables + for (i = 0; i < 256; i++) { + th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i; + } + + for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) { + // Compute sbox + s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4; + s = s >> 8 ^ s & 255 ^ 99; + sbox[x] = s; + sboxInv[s] = x; + + // Compute MixColumns + x8 = d[x4 = d[x2 = d[x]]]; + tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100; + tEnc = d[s] * 0x101 ^ s * 0x1010100; + + for (i = 0; i < 4; i++) { + encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8; + decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8; + } + } + + // Compactify. Considerable speedup on Firefox. + for (i = 0; i < 5; i++) { + encTable[i] = encTable[i].slice(0); + decTable[i] = decTable[i].slice(0); + } + return tables; + }; + var aesTables = null; + + /** + * Schedule out an AES key for both encryption and decryption. This + * is a low-level class. Use a cipher mode to do bulk encryption. + * + * @class AES + * @param key {Array} The key as an array of 4, 6 or 8 words. + */ + + var AES = function () { + function AES(key) { + classCallCheck$2(this, AES); + + /** + * The expanded S-box and inverse S-box tables. These will be computed + * on the client so that we don't have to send them down the wire. + * + * There are two tables, _tables[0] is for encryption and + * _tables[1] is for decryption. + * + * The first 4 sub-tables are the expanded S-box with MixColumns. The + * last (_tables[01][4]) is the S-box itself. + * + * @private + */ + // if we have yet to precompute the S-box tables + // do so now + if (!aesTables) { + aesTables = precompute(); + } + // then make a copy of that object for use + this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]]; + var i = void 0; + var j = void 0; + var tmp = void 0; + var encKey = void 0; + var decKey = void 0; + var sbox = this._tables[0][4]; + var decTable = this._tables[1]; + var keyLen = key.length; + var rcon = 1; + + if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) { + throw new Error('Invalid aes key size'); + } + + encKey = key.slice(0); + decKey = []; + this._key = [encKey, decKey]; + + // schedule encryption keys + for (i = keyLen; i < 4 * keyLen + 28; i++) { + tmp = encKey[i - 1]; + + // apply sbox + if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) { + tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; + + // shift rows and add rcon + if (i % keyLen === 0) { + tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24; + rcon = rcon << 1 ^ (rcon >> 7) * 283; + } + } + + encKey[i] = encKey[i - keyLen] ^ tmp; + } + + // schedule decryption keys + for (j = 0; i; j++, i--) { + tmp = encKey[j & 3 ? i : i - 4]; + if (i <= 4 || j < 4) { + decKey[j] = tmp; + } else { + decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]]; + } + } + } + + /** + * Decrypt 16 bytes, specified as four 32-bit words. + * + * @param {Number} encrypted0 the first word to decrypt + * @param {Number} encrypted1 the second word to decrypt + * @param {Number} encrypted2 the third word to decrypt + * @param {Number} encrypted3 the fourth word to decrypt + * @param {Int32Array} out the array to write the decrypted words + * into + * @param {Number} offset the offset into the output array to start + * writing results + * @return {Array} The plaintext. + */ + + AES.prototype.decrypt = function decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) { + var key = this._key[1]; + // state variables a,b,c,d are loaded with pre-whitened data + var a = encrypted0 ^ key[0]; + var b = encrypted3 ^ key[1]; + var c = encrypted2 ^ key[2]; + var d = encrypted1 ^ key[3]; + var a2 = void 0; + var b2 = void 0; + var c2 = void 0; + + // key.length === 2 ? + var nInnerRounds = key.length / 4 - 2; + var i = void 0; + var kIndex = 4; + var table = this._tables[1]; + + // load up the tables + var table0 = table[0]; + var table1 = table[1]; + var table2 = table[2]; + var table3 = table[3]; + var sbox = table[4]; + + // Inner rounds. Cribbed from OpenSSL. + for (i = 0; i < nInnerRounds; i++) { + a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex]; + b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1]; + c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2]; + d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3]; + kIndex += 4; + a = a2;b = b2;c = c2; + } + + // Last round. + for (i = 0; i < 4; i++) { + out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++]; + a2 = a;a = b;b = c;c = d;d = a2; + } + }; + + return AES; + }(); + + /** + * @file stream.js + */ + /** + * A lightweight readable stream implemention that handles event dispatching. + * + * @class Stream + */ + var Stream$3 = function () { + function Stream() { + classCallCheck$2(this, Stream); + + this.listeners = {}; + } + + /** + * Add a listener for a specified event type. + * + * @param {String} type the event name + * @param {Function} listener the callback to be invoked when an event of + * the specified type occurs + */ + + Stream.prototype.on = function on(type, listener) { + if (!this.listeners[type]) { + this.listeners[type] = []; + } + this.listeners[type].push(listener); + }; + + /** + * Remove a listener for a specified event type. + * + * @param {String} type the event name + * @param {Function} listener a function previously registered for this + * type of event through `on` + * @return {Boolean} if we could turn it off or not + */ + + Stream.prototype.off = function off(type, listener) { + if (!this.listeners[type]) { + return false; + } + + var index = this.listeners[type].indexOf(listener); + + this.listeners[type].splice(index, 1); + return index > -1; + }; + + /** + * Trigger an event of the specified type on this stream. Any additional + * arguments to this function are passed as parameters to event listeners. + * + * @param {String} type the event name + */ + + Stream.prototype.trigger = function trigger(type) { + var callbacks = this.listeners[type]; + + if (!callbacks) { + return; + } + + // Slicing the arguments on every invocation of this method + // can add a significant amount of overhead. Avoid the + // intermediate object creation for the common case of a + // single callback argument + if (arguments.length === 2) { + var length = callbacks.length; + + for (var i = 0; i < length; ++i) { + callbacks[i].call(this, arguments[1]); + } + } else { + var args = Array.prototype.slice.call(arguments, 1); + var _length = callbacks.length; + + for (var _i = 0; _i < _length; ++_i) { + callbacks[_i].apply(this, args); + } + } + }; + + /** + * Destroys the stream and cleans up. + */ + + Stream.prototype.dispose = function dispose() { + this.listeners = {}; + }; + /** + * Forwards all `data` events on this stream to the destination stream. The + * destination stream should provide a method `push` to receive the data + * events as they arrive. + * + * @param {Stream} destination the stream that will receive all `data` events + * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options + */ + + Stream.prototype.pipe = function pipe(destination) { + this.on('data', function (data) { + destination.push(data); + }); + }; + + return Stream; + }(); + + /** + * @file async-stream.js + */ + /** + * A wrapper around the Stream class to use setTiemout + * and run stream "jobs" Asynchronously + * + * @class AsyncStream + * @extends Stream + */ + + var AsyncStream = function (_Stream) { + inherits$2(AsyncStream, _Stream); + + function AsyncStream() { + classCallCheck$2(this, AsyncStream); + + var _this = possibleConstructorReturn$2(this, _Stream.call(this, Stream$3)); + + _this.jobs = []; + _this.delay = 1; + _this.timeout_ = null; + return _this; + } + + /** + * process an async job + * + * @private + */ + + AsyncStream.prototype.processJob_ = function processJob_() { + this.jobs.shift()(); + if (this.jobs.length) { + this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay); + } else { + this.timeout_ = null; + } + }; + + /** + * push a job into the stream + * + * @param {Function} job the job to push into the stream + */ + + AsyncStream.prototype.push = function push(job) { + this.jobs.push(job); + if (!this.timeout_) { + this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay); + } + }; + + return AsyncStream; + }(Stream$3); + + /** + * @file decrypter.js + * + * An asynchronous implementation of AES-128 CBC decryption with + * PKCS#7 padding. + */ + + /** + * Convert network-order (big-endian) bytes into their little-endian + * representation. + */ + var ntoh = function ntoh(word) { + return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24; + }; + + /** + * Decrypt bytes using AES-128 with CBC and PKCS#7 padding. + * + * @param {Uint8Array} encrypted the encrypted bytes + * @param {Uint32Array} key the bytes of the decryption key + * @param {Uint32Array} initVector the initialization vector (IV) to + * use for the first round of CBC. + * @return {Uint8Array} the decrypted bytes + * + * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard + * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29 + * @see https://tools.ietf.org/html/rfc2315 + */ + var decrypt = function decrypt(encrypted, key, initVector) { + // word-level access to the encrypted bytes + var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2); + + var decipher = new AES(Array.prototype.slice.call(key)); + + // byte and word-level access for the decrypted output + var decrypted = new Uint8Array(encrypted.byteLength); + var decrypted32 = new Int32Array(decrypted.buffer); + + // temporary variables for working with the IV, encrypted, and + // decrypted data + var init0 = void 0; + var init1 = void 0; + var init2 = void 0; + var init3 = void 0; + var encrypted0 = void 0; + var encrypted1 = void 0; + var encrypted2 = void 0; + var encrypted3 = void 0; + + // iteration variable + var wordIx = void 0; + + // pull out the words of the IV to ensure we don't modify the + // passed-in reference and easier access + init0 = initVector[0]; + init1 = initVector[1]; + init2 = initVector[2]; + init3 = initVector[3]; + + // decrypt four word sequences, applying cipher-block chaining (CBC) + // to each decrypted block + for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) { + // convert big-endian (network order) words into little-endian + // (javascript order) + encrypted0 = ntoh(encrypted32[wordIx]); + encrypted1 = ntoh(encrypted32[wordIx + 1]); + encrypted2 = ntoh(encrypted32[wordIx + 2]); + encrypted3 = ntoh(encrypted32[wordIx + 3]); + + // decrypt the block + decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); + + // XOR with the IV, and restore network byte-order to obtain the + // plaintext + decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0); + decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1); + decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2); + decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); + + // setup the IV for the next round + init0 = encrypted0; + init1 = encrypted1; + init2 = encrypted2; + init3 = encrypted3; + } + + return decrypted; + }; + + /** + * The `Decrypter` class that manages decryption of AES + * data through `AsyncStream` objects and the `decrypt` + * function + * + * @param {Uint8Array} encrypted the encrypted bytes + * @param {Uint32Array} key the bytes of the decryption key + * @param {Uint32Array} initVector the initialization vector (IV) to + * @param {Function} done the function to run when done + * @class Decrypter + */ + + var Decrypter = function () { + function Decrypter(encrypted, key, initVector, done) { + classCallCheck$2(this, Decrypter); + + var step = Decrypter.STEP; + var encrypted32 = new Int32Array(encrypted.buffer); + var decrypted = new Uint8Array(encrypted.byteLength); + var i = 0; + + this.asyncStream_ = new AsyncStream(); + + // split up the encryption job and do the individual chunks asynchronously + this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted)); + for (i = step; i < encrypted32.length; i += step) { + initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]); + this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted)); + } + // invoke the done() callback when everything is finished + this.asyncStream_.push(function () { + // remove pkcs#7 padding from the decrypted bytes + done(null, unpad(decrypted)); + }); + } + + /** + * a getter for step the maximum number of bytes to process at one time + * + * @return {Number} the value of step 32000 + */ + + /** + * @private + */ + Decrypter.prototype.decryptChunk_ = function decryptChunk_(encrypted, key, initVector, decrypted) { + return function () { + var bytes = decrypt(encrypted, key, initVector); + + decrypted.set(bytes, encrypted.byteOffset); + }; + }; + + createClass$1(Decrypter, null, [{ + key: 'STEP', + get: function get$$1() { + // 4 * 8000; + return 32000; + } + }]); + return Decrypter; + }(); + + /** + * @videojs/http-streaming + * @version 1.2.6 + * @copyright 2018 Brightcove, Inc + * @license Apache-2.0 + */ + + /** + * @file resolve-url.js + */ + + var resolveUrl$1 = function resolveUrl(baseURL, relativeURL) { + // return early if we don't need to resolve + if (/^[a-z]+:/i.test(relativeURL)) { + return relativeURL; + } + + // if the base URL is relative then combine with the current location + if (!/\/\//i.test(baseURL)) { + baseURL = urlToolkit.buildAbsoluteURL(window_1.location.href, baseURL); + } + + return urlToolkit.buildAbsoluteURL(baseURL, relativeURL); + }; + + var classCallCheck$3 = function classCallCheck$$1(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + }; + + var createClass$2 = function () { + function defineProperties(target, props) { + for (var i = 0; i < props.length; i++) { + var descriptor = props[i]; + descriptor.enumerable = descriptor.enumerable || false; + descriptor.configurable = true; + if ("value" in descriptor) descriptor.writable = true; + Object.defineProperty(target, descriptor.key, descriptor); + } + } + + return function (Constructor, protoProps, staticProps) { + if (protoProps) defineProperties(Constructor.prototype, protoProps); + if (staticProps) defineProperties(Constructor, staticProps); + return Constructor; + }; + }(); + + var get$2 = function get$$1(object, property, receiver) { + if (object === null) object = Function.prototype; + var desc = Object.getOwnPropertyDescriptor(object, property); + + if (desc === undefined) { + var parent = Object.getPrototypeOf(object); + + if (parent === null) { + return undefined; + } else { + return get$$1(parent, property, receiver); + } + } else if ("value" in desc) { + return desc.value; + } else { + var getter = desc.get; + + if (getter === undefined) { + return undefined; + } + + return getter.call(receiver); + } + }; + + var inherits$3 = function inherits$$1(subClass, superClass) { + if (typeof superClass !== "function" && superClass !== null) { + throw new TypeError("Super expression must either be null or a function, not " + (typeof superClass === 'undefined' ? 'undefined' : _typeof(superClass))); + } + + subClass.prototype = Object.create(superClass && superClass.prototype, { + constructor: { + value: subClass, + enumerable: false, + writable: true, + configurable: true + } + }); + if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; + }; + + var possibleConstructorReturn$3 = function possibleConstructorReturn$$1(self, call) { + if (!self) { + throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); + } + + return call && ((typeof call === 'undefined' ? 'undefined' : _typeof(call)) === "object" || typeof call === "function") ? call : self; + }; + + var slicedToArray$1 = function () { + function sliceIterator(arr, i) { + var _arr = []; + var _n = true; + var _d = false; + var _e = undefined; + + try { + for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { + _arr.push(_s.value); + + if (i && _arr.length === i) break; + } + } catch (err) { + _d = true; + _e = err; + } finally { + try { + if (!_n && _i["return"]) _i["return"](); + } finally { + if (_d) throw _e; + } + } + + return _arr; + } + + return function (arr, i) { + if (Array.isArray(arr)) { + return arr; + } else if (Symbol.iterator in Object(arr)) { + return sliceIterator(arr, i); + } else { + throw new TypeError("Invalid attempt to destructure non-iterable instance"); + } + }; + }(); + + /** + * @file playlist-loader.js + * + * A state machine that manages the loading, caching, and updating of + * M3U8 playlists. + * + */ + + var mergeOptions$1 = videojs$1.mergeOptions, + EventTarget$1 = videojs$1.EventTarget, + log$2 = videojs$1.log; + + /** + * Loops through all supported media groups in master and calls the provided + * callback for each group + * + * @param {Object} master + * The parsed master manifest object + * @param {Function} callback + * Callback to call for each media group + */ + + var forEachMediaGroup = function forEachMediaGroup(master, callback) { + ['AUDIO', 'SUBTITLES'].forEach(function (mediaType) { + for (var groupKey in master.mediaGroups[mediaType]) { + for (var labelKey in master.mediaGroups[mediaType][groupKey]) { + var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey]; + + callback(mediaProperties, mediaType, groupKey, labelKey); + } + } + }); + }; + + /** + * Returns a new array of segments that is the result of merging + * properties from an older list of segments onto an updated + * list. No properties on the updated playlist will be overridden. + * + * @param {Array} original the outdated list of segments + * @param {Array} update the updated list of segments + * @param {Number=} offset the index of the first update + * segment in the original segment list. For non-live playlists, + * this should always be zero and does not need to be + * specified. For live playlists, it should be the difference + * between the media sequence numbers in the original and updated + * playlists. + * @return a list of merged segment objects + */ + var updateSegments = function updateSegments(original, update, offset) { + var result = update.slice(); + + offset = offset || 0; + var length = Math.min(original.length, update.length + offset); + + for (var i = offset; i < length; i++) { + result[i - offset] = mergeOptions$1(original[i], result[i - offset]); + } + return result; + }; + + var resolveSegmentUris = function resolveSegmentUris(segment, baseUri) { + if (!segment.resolvedUri) { + segment.resolvedUri = resolveUrl$1(baseUri, segment.uri); + } + if (segment.key && !segment.key.resolvedUri) { + segment.key.resolvedUri = resolveUrl$1(baseUri, segment.key.uri); + } + if (segment.map && !segment.map.resolvedUri) { + segment.map.resolvedUri = resolveUrl$1(baseUri, segment.map.uri); + } + }; + + /** + * Returns a new master playlist that is the result of merging an + * updated media playlist into the original version. If the + * updated media playlist does not match any of the playlist + * entries in the original master playlist, null is returned. + * + * @param {Object} master a parsed master M3U8 object + * @param {Object} media a parsed media M3U8 object + * @return {Object} a new object that represents the original + * master playlist with the updated media playlist merged in, or + * null if the merge produced no change. + */ + var updateMaster = function updateMaster(master, media) { + var result = mergeOptions$1(master, {}); + var playlist = result.playlists[media.uri]; + + if (!playlist) { + return null; + } + + // consider the playlist unchanged if the number of segments is equal and the media + // sequence number is unchanged + if (playlist.segments && media.segments && playlist.segments.length === media.segments.length && playlist.mediaSequence === media.mediaSequence) { + return null; + } + + var mergedPlaylist = mergeOptions$1(playlist, media); + + // if the update could overlap existing segment information, merge the two segment lists + if (playlist.segments) { + mergedPlaylist.segments = updateSegments(playlist.segments, media.segments, media.mediaSequence - playlist.mediaSequence); + } + + // resolve any segment URIs to prevent us from having to do it later + mergedPlaylist.segments.forEach(function (segment) { + resolveSegmentUris(segment, mergedPlaylist.resolvedUri); + }); + + // TODO Right now in the playlists array there are two references to each playlist, one + // that is referenced by index, and one by URI. The index reference may no longer be + // necessary. + for (var i = 0; i < result.playlists.length; i++) { + if (result.playlists[i].uri === media.uri) { + result.playlists[i] = mergedPlaylist; + } + } + result.playlists[media.uri] = mergedPlaylist; + + return result; + }; + + var setupMediaPlaylists = function setupMediaPlaylists(master) { + // setup by-URI lookups and resolve media playlist URIs + var i = master.playlists.length; + + while (i--) { + var playlist = master.playlists[i]; + + master.playlists[playlist.uri] = playlist; + playlist.resolvedUri = resolveUrl$1(master.uri, playlist.uri); + playlist.id = i; + + if (!playlist.attributes) { + // Although the spec states an #EXT-X-STREAM-INF tag MUST have a + // BANDWIDTH attribute, we can play the stream without it. This means a poorly + // formatted master playlist may not have an attribute list. An attributes + // property is added here to prevent undefined references when we encounter + // this scenario. + playlist.attributes = {}; + + log$2.warn('Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.'); + } + } + }; + + var resolveMediaGroupUris = function resolveMediaGroupUris(master) { + forEachMediaGroup(master, function (properties) { + if (properties.uri) { + properties.resolvedUri = resolveUrl$1(master.uri, properties.uri); + } + }); + }; + + /** + * Calculates the time to wait before refreshing a live playlist + * + * @param {Object} media + * The current media + * @param {Boolean} update + * True if there were any updates from the last refresh, false otherwise + * @return {Number} + * The time in ms to wait before refreshing the live playlist + */ + var refreshDelay = function refreshDelay(media, update) { + var lastSegment = media.segments[media.segments.length - 1]; + var delay = void 0; + + if (update && lastSegment && lastSegment.duration) { + delay = lastSegment.duration * 1000; + } else { + // if the playlist is unchanged since the last reload or last segment duration + // cannot be determined, try again after half the target duration + delay = (media.targetDuration || 10) * 500; + } + return delay; + }; + + /** + * Load a playlist from a remote location + * + * @class PlaylistLoader + * @extends Stream + * @param {String} srcUrl the url to start with + * @param {Boolean} withCredentials the withCredentials xhr option + * @constructor + */ + + var PlaylistLoader = function (_EventTarget) { + inherits$3(PlaylistLoader, _EventTarget); + + function PlaylistLoader(srcUrl, hls, withCredentials) { + classCallCheck$3(this, PlaylistLoader); + + var _this = possibleConstructorReturn$3(this, (PlaylistLoader.__proto__ || Object.getPrototypeOf(PlaylistLoader)).call(this)); + + _this.srcUrl = srcUrl; + _this.hls_ = hls; + _this.withCredentials = withCredentials; + + if (!_this.srcUrl) { + throw new Error('A non-empty playlist URL is required'); + } + + // initialize the loader state + _this.state = 'HAVE_NOTHING'; + + // live playlist staleness timeout + _this.on('mediaupdatetimeout', function () { + if (_this.state !== 'HAVE_METADATA') { + // only refresh the media playlist if no other activity is going on + return; + } + + _this.state = 'HAVE_CURRENT_METADATA'; + + _this.request = _this.hls_.xhr({ + uri: resolveUrl$1(_this.master.uri, _this.media().uri), + withCredentials: _this.withCredentials + }, function (error, req) { + // disposed + if (!_this.request) { + return; + } + + if (error) { + return _this.playlistRequestError(_this.request, _this.media().uri, 'HAVE_METADATA'); + } + + _this.haveMetadata(_this.request, _this.media().uri); + }); + }); + return _this; + } + + createClass$2(PlaylistLoader, [{ + key: 'playlistRequestError', + value: function playlistRequestError(xhr, url, startingState) { + // any in-flight request is now finished + this.request = null; + + if (startingState) { + this.state = startingState; + } + + this.error = { + playlist: this.master.playlists[url], + status: xhr.status, + message: 'HLS playlist request error at URL: ' + url, + responseText: xhr.responseText, + code: xhr.status >= 500 ? 4 : 2 + }; + + this.trigger('error'); + } + + // update the playlist loader's state in response to a new or + // updated playlist. + + }, { + key: 'haveMetadata', + value: function haveMetadata(xhr, url) { + var _this2 = this; + + // any in-flight request is now finished + this.request = null; + this.state = 'HAVE_METADATA'; + + var parser = new Parser(); + + parser.push(xhr.responseText); + parser.end(); + parser.manifest.uri = url; + // m3u8-parser does not attach an attributes property to media playlists so make + // sure that the property is attached to avoid undefined reference errors + parser.manifest.attributes = parser.manifest.attributes || {}; + + // merge this playlist into the master + var update = updateMaster(this.master, parser.manifest); + + this.targetDuration = parser.manifest.targetDuration; + + if (update) { + this.master = update; + this.media_ = this.master.playlists[parser.manifest.uri]; + } else { + this.trigger('playlistunchanged'); + } + + // refresh live playlists after a target duration passes + if (!this.media().endList) { + window_1.clearTimeout(this.mediaUpdateTimeout); + this.mediaUpdateTimeout = window_1.setTimeout(function () { + _this2.trigger('mediaupdatetimeout'); + }, refreshDelay(this.media(), !!update)); + } + + this.trigger('loadedplaylist'); + } + + /** + * Abort any outstanding work and clean up. + */ + + }, { + key: 'dispose', + value: function dispose() { + this.stopRequest(); + window_1.clearTimeout(this.mediaUpdateTimeout); + } + }, { + key: 'stopRequest', + value: function stopRequest() { + if (this.request) { + var oldRequest = this.request; + + this.request = null; + oldRequest.onreadystatechange = null; + oldRequest.abort(); + } + } + + /** + * When called without any arguments, returns the currently + * active media playlist. When called with a single argument, + * triggers the playlist loader to asynchronously switch to the + * specified media playlist. Calling this method while the + * loader is in the HAVE_NOTHING causes an error to be emitted + * but otherwise has no effect. + * + * @param {Object=} playlist the parsed media playlist + * object to switch to + * @return {Playlist} the current loaded media + */ + + }, { + key: 'media', + value: function media(playlist) { + var _this3 = this; + + // getter + if (!playlist) { + return this.media_; + } + + // setter + if (this.state === 'HAVE_NOTHING') { + throw new Error('Cannot switch media playlist from ' + this.state); + } + + var startingState = this.state; + + // find the playlist object if the target playlist has been + // specified by URI + if (typeof playlist === 'string') { + if (!this.master.playlists[playlist]) { + throw new Error('Unknown playlist URI: ' + playlist); + } + playlist = this.master.playlists[playlist]; + } + + var mediaChange = !this.media_ || playlist.uri !== this.media_.uri; + + // switch to fully loaded playlists immediately + if (this.master.playlists[playlist.uri].endList) { + // abort outstanding playlist requests + if (this.request) { + this.request.onreadystatechange = null; + this.request.abort(); + this.request = null; + } + this.state = 'HAVE_METADATA'; + this.media_ = playlist; + + // trigger media change if the active media has been updated + if (mediaChange) { + this.trigger('mediachanging'); + this.trigger('mediachange'); + } + return; + } + + // switching to the active playlist is a no-op + if (!mediaChange) { + return; + } + + this.state = 'SWITCHING_MEDIA'; + + // there is already an outstanding playlist request + if (this.request) { + if (resolveUrl$1(this.master.uri, playlist.uri) === this.request.url) { + // requesting to switch to the same playlist multiple times + // has no effect after the first + return; + } + this.request.onreadystatechange = null; + this.request.abort(); + this.request = null; + } + + // request the new playlist + if (this.media_) { + this.trigger('mediachanging'); + } + + this.request = this.hls_.xhr({ + uri: resolveUrl$1(this.master.uri, playlist.uri), + withCredentials: this.withCredentials + }, function (error, req) { + // disposed + if (!_this3.request) { + return; + } + + if (error) { + return _this3.playlistRequestError(_this3.request, playlist.uri, startingState); + } + + _this3.haveMetadata(req, playlist.uri); + + // fire loadedmetadata the first time a media playlist is loaded + if (startingState === 'HAVE_MASTER') { + _this3.trigger('loadedmetadata'); + } else { + _this3.trigger('mediachange'); + } + }); + } + + /** + * pause loading of the playlist + */ + + }, { + key: 'pause', + value: function pause() { + this.stopRequest(); + window_1.clearTimeout(this.mediaUpdateTimeout); + if (this.state === 'HAVE_NOTHING') { + // If we pause the loader before any data has been retrieved, its as if we never + // started, so reset to an unstarted state. + this.started = false; + } + // Need to restore state now that no activity is happening + if (this.state === 'SWITCHING_MEDIA') { + // if the loader was in the process of switching media, it should either return to + // HAVE_MASTER or HAVE_METADATA depending on if the loader has loaded a media + // playlist yet. This is determined by the existence of loader.media_ + if (this.media_) { + this.state = 'HAVE_METADATA'; + } else { + this.state = 'HAVE_MASTER'; + } + } else if (this.state === 'HAVE_CURRENT_METADATA') { + this.state = 'HAVE_METADATA'; + } + } + + /** + * start loading of the playlist + */ + + }, { + key: 'load', + value: function load(isFinalRendition) { + var _this4 = this; + + window_1.clearTimeout(this.mediaUpdateTimeout); + + var media = this.media(); + + if (isFinalRendition) { + var delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000; + + this.mediaUpdateTimeout = window_1.setTimeout(function () { + return _this4.load(); + }, delay); + return; + } + + if (!this.started) { + this.start(); + return; + } + + if (media && !media.endList) { + this.trigger('mediaupdatetimeout'); + } else { + this.trigger('loadedplaylist'); + } + } + + /** + * start loading of the playlist + */ + + }, { + key: 'start', + value: function start() { + var _this5 = this; + + this.started = true; + + // request the specified URL + this.request = this.hls_.xhr({ + uri: this.srcUrl, + withCredentials: this.withCredentials + }, function (error, req) { + // disposed + if (!_this5.request) { + return; + } + + // clear the loader's request reference + _this5.request = null; + + if (error) { + _this5.error = { + status: req.status, + message: 'HLS playlist request error at URL: ' + _this5.srcUrl, + responseText: req.responseText, + // MEDIA_ERR_NETWORK + code: 2 + }; + if (_this5.state === 'HAVE_NOTHING') { + _this5.started = false; + } + return _this5.trigger('error'); + } + + var parser = new Parser(); + + parser.push(req.responseText); + parser.end(); + + _this5.state = 'HAVE_MASTER'; + + parser.manifest.uri = _this5.srcUrl; + + // loaded a master playlist + if (parser.manifest.playlists) { + _this5.master = parser.manifest; + + setupMediaPlaylists(_this5.master); + resolveMediaGroupUris(_this5.master); + + _this5.trigger('loadedplaylist'); + if (!_this5.request) { + // no media playlist was specifically selected so start + // from the first listed one + _this5.media(parser.manifest.playlists[0]); + } + return; + } + + // loaded a media playlist + // infer a master playlist if none was previously requested + _this5.master = { + mediaGroups: { + 'AUDIO': {}, + 'VIDEO': {}, + 'CLOSED-CAPTIONS': {}, + 'SUBTITLES': {} + }, + uri: window_1.location.href, + playlists: [{ + uri: _this5.srcUrl, + id: 0 + }] + }; + _this5.master.playlists[_this5.srcUrl] = _this5.master.playlists[0]; + _this5.master.playlists[0].resolvedUri = _this5.srcUrl; + // m3u8-parser does not attach an attributes property to media playlists so make + // sure that the property is attached to avoid undefined reference errors + _this5.master.playlists[0].attributes = _this5.master.playlists[0].attributes || {}; + _this5.haveMetadata(req, _this5.srcUrl); + return _this5.trigger('loadedmetadata'); + }); + } + }]); + return PlaylistLoader; + }(EventTarget$1); + + /** + * @file playlist.js + * + * Playlist related utilities. + */ + + var createTimeRange = videojs$1.createTimeRange; + + /** + * walk backward until we find a duration we can use + * or return a failure + * + * @param {Playlist} playlist the playlist to walk through + * @param {Number} endSequence the mediaSequence to stop walking on + */ + + var backwardDuration = function backwardDuration(playlist, endSequence) { + var result = 0; + var i = endSequence - playlist.mediaSequence; + // if a start time is available for segment immediately following + // the interval, use it + var segment = playlist.segments[i]; + + // Walk backward until we find the latest segment with timeline + // information that is earlier than endSequence + if (segment) { + if (typeof segment.start !== 'undefined') { + return { result: segment.start, precise: true }; + } + if (typeof segment.end !== 'undefined') { + return { + result: segment.end - segment.duration, + precise: true + }; + } + } + while (i--) { + segment = playlist.segments[i]; + if (typeof segment.end !== 'undefined') { + return { result: result + segment.end, precise: true }; + } + + result += segment.duration; + + if (typeof segment.start !== 'undefined') { + return { result: result + segment.start, precise: true }; + } + } + return { result: result, precise: false }; + }; + + /** + * walk forward until we find a duration we can use + * or return a failure + * + * @param {Playlist} playlist the playlist to walk through + * @param {Number} endSequence the mediaSequence to stop walking on + */ + var forwardDuration = function forwardDuration(playlist, endSequence) { + var result = 0; + var segment = void 0; + var i = endSequence - playlist.mediaSequence; + // Walk forward until we find the earliest segment with timeline + // information + + for (; i < playlist.segments.length; i++) { + segment = playlist.segments[i]; + if (typeof segment.start !== 'undefined') { + return { + result: segment.start - result, + precise: true + }; + } + + result += segment.duration; + + if (typeof segment.end !== 'undefined') { + return { + result: segment.end - result, + precise: true + }; + } + } + // indicate we didn't find a useful duration estimate + return { result: -1, precise: false }; + }; + + /** + * Calculate the media duration from the segments associated with a + * playlist. The duration of a subinterval of the available segments + * may be calculated by specifying an end index. + * + * @param {Object} playlist a media playlist object + * @param {Number=} endSequence an exclusive upper boundary + * for the playlist. Defaults to playlist length. + * @param {Number} expired the amount of time that has dropped + * off the front of the playlist in a live scenario + * @return {Number} the duration between the first available segment + * and end index. + */ + var intervalDuration = function intervalDuration(playlist, endSequence, expired) { + var backward = void 0; + var forward = void 0; + + if (typeof endSequence === 'undefined') { + endSequence = playlist.mediaSequence + playlist.segments.length; + } + + if (endSequence < playlist.mediaSequence) { + return 0; + } + + // do a backward walk to estimate the duration + backward = backwardDuration(playlist, endSequence); + if (backward.precise) { + // if we were able to base our duration estimate on timing + // information provided directly from the Media Source, return + // it + return backward.result; + } + + // walk forward to see if a precise duration estimate can be made + // that way + forward = forwardDuration(playlist, endSequence); + if (forward.precise) { + // we found a segment that has been buffered and so it's + // position is known precisely + return forward.result; + } + + // return the less-precise, playlist-based duration estimate + return backward.result + expired; + }; + + /** + * Calculates the duration of a playlist. If a start and end index + * are specified, the duration will be for the subset of the media + * timeline between those two indices. The total duration for live + * playlists is always Infinity. + * + * @param {Object} playlist a media playlist object + * @param {Number=} endSequence an exclusive upper + * boundary for the playlist. Defaults to the playlist media + * sequence number plus its length. + * @param {Number=} expired the amount of time that has + * dropped off the front of the playlist in a live scenario + * @return {Number} the duration between the start index and end + * index. + */ + var duration = function duration(playlist, endSequence, expired) { + if (!playlist) { + return 0; + } + + if (typeof expired !== 'number') { + expired = 0; + } + + // if a slice of the total duration is not requested, use + // playlist-level duration indicators when they're present + if (typeof endSequence === 'undefined') { + // if present, use the duration specified in the playlist + if (playlist.totalDuration) { + return playlist.totalDuration; + } + + // duration should be Infinity for live playlists + if (!playlist.endList) { + return window_1.Infinity; + } + } + + // calculate the total duration based on the segment durations + return intervalDuration(playlist, endSequence, expired); + }; + + /** + * Calculate the time between two indexes in the current playlist + * neight the start- nor the end-index need to be within the current + * playlist in which case, the targetDuration of the playlist is used + * to approximate the durations of the segments + * + * @param {Object} playlist a media playlist object + * @param {Number} startIndex + * @param {Number} endIndex + * @return {Number} the number of seconds between startIndex and endIndex + */ + var sumDurations = function sumDurations(playlist, startIndex, endIndex) { + var durations = 0; + + if (startIndex > endIndex) { + var _ref = [endIndex, startIndex]; + startIndex = _ref[0]; + endIndex = _ref[1]; + } + + if (startIndex < 0) { + for (var i = startIndex; i < Math.min(0, endIndex); i++) { + durations += playlist.targetDuration; + } + startIndex = 0; + } + + for (var _i = startIndex; _i < endIndex; _i++) { + durations += playlist.segments[_i].duration; + } + + return durations; + }; + + /** + * Determines the media index of the segment corresponding to the safe edge of the live + * window which is the duration of the last segment plus 2 target durations from the end + * of the playlist. + * + * @param {Object} playlist + * a media playlist object + * @return {Number} + * The media index of the segment at the safe live point. 0 if there is no "safe" + * point. + * @function safeLiveIndex + */ + var safeLiveIndex = function safeLiveIndex(playlist) { + if (!playlist.segments.length) { + return 0; + } + + var i = playlist.segments.length - 1; + var distanceFromEnd = playlist.segments[i].duration || playlist.targetDuration; + var safeDistance = distanceFromEnd + playlist.targetDuration * 2; + + while (i--) { + distanceFromEnd += playlist.segments[i].duration; + + if (distanceFromEnd >= safeDistance) { + break; + } + } + + return Math.max(0, i); + }; + + /** + * Calculates the playlist end time + * + * @param {Object} playlist a media playlist object + * @param {Number=} expired the amount of time that has + * dropped off the front of the playlist in a live scenario + * @param {Boolean|false} useSafeLiveEnd a boolean value indicating whether or not the + * playlist end calculation should consider the safe live end + * (truncate the playlist end by three segments). This is normally + * used for calculating the end of the playlist's seekable range. + * @returns {Number} the end time of playlist + * @function playlistEnd + */ + var playlistEnd = function playlistEnd(playlist, expired, useSafeLiveEnd) { + if (!playlist || !playlist.segments) { + return null; + } + if (playlist.endList) { + return duration(playlist); + } + + if (expired === null) { + return null; + } + + expired = expired || 0; + + var endSequence = useSafeLiveEnd ? safeLiveIndex(playlist) : playlist.segments.length; + + return intervalDuration(playlist, playlist.mediaSequence + endSequence, expired); + }; + + /** + * Calculates the interval of time that is currently seekable in a + * playlist. The returned time ranges are relative to the earliest + * moment in the specified playlist that is still available. A full + * seekable implementation for live streams would need to offset + * these values by the duration of content that has expired from the + * stream. + * + * @param {Object} playlist a media playlist object + * dropped off the front of the playlist in a live scenario + * @param {Number=} expired the amount of time that has + * dropped off the front of the playlist in a live scenario + * @return {TimeRanges} the periods of time that are valid targets + * for seeking + */ + var seekable = function seekable(playlist, expired) { + var useSafeLiveEnd = true; + var seekableStart = expired || 0; + var seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd); + + if (seekableEnd === null) { + return createTimeRange(); + } + return createTimeRange(seekableStart, seekableEnd); + }; + + var isWholeNumber = function isWholeNumber(num) { + return num - Math.floor(num) === 0; + }; + + var roundSignificantDigit = function roundSignificantDigit(increment, num) { + // If we have a whole number, just add 1 to it + if (isWholeNumber(num)) { + return num + increment * 0.1; + } + + var numDecimalDigits = num.toString().split('.')[1].length; + + for (var i = 1; i <= numDecimalDigits; i++) { + var scale = Math.pow(10, i); + var temp = num * scale; + + if (isWholeNumber(temp) || i === numDecimalDigits) { + return (temp + increment) / scale; + } + } + }; + + var ceilLeastSignificantDigit = roundSignificantDigit.bind(null, 1); + var floorLeastSignificantDigit = roundSignificantDigit.bind(null, -1); + + /** + * Determine the index and estimated starting time of the segment that + * contains a specified playback position in a media playlist. + * + * @param {Object} playlist the media playlist to query + * @param {Number} currentTime The number of seconds since the earliest + * possible position to determine the containing segment for + * @param {Number} startIndex + * @param {Number} startTime + * @return {Object} + */ + var getMediaInfoForTime = function getMediaInfoForTime(playlist, currentTime, startIndex, startTime) { + var i = void 0; + var segment = void 0; + var numSegments = playlist.segments.length; + + var time = currentTime - startTime; + + if (time < 0) { + // Walk backward from startIndex in the playlist, adding durations + // until we find a segment that contains `time` and return it + if (startIndex > 0) { + for (i = startIndex - 1; i >= 0; i--) { + segment = playlist.segments[i]; + time += floorLeastSignificantDigit(segment.duration); + if (time > 0) { + return { + mediaIndex: i, + startTime: startTime - sumDurations(playlist, startIndex, i) + }; + } + } + } + // We were unable to find a good segment within the playlist + // so select the first segment + return { + mediaIndex: 0, + startTime: currentTime + }; + } + + // When startIndex is negative, we first walk forward to first segment + // adding target durations. If we "run out of time" before getting to + // the first segment, return the first segment + if (startIndex < 0) { + for (i = startIndex; i < 0; i++) { + time -= playlist.targetDuration; + if (time < 0) { + return { + mediaIndex: 0, + startTime: currentTime + }; + } + } + startIndex = 0; + } + + // Walk forward from startIndex in the playlist, subtracting durations + // until we find a segment that contains `time` and return it + for (i = startIndex; i < numSegments; i++) { + segment = playlist.segments[i]; + time -= ceilLeastSignificantDigit(segment.duration); + if (time < 0) { + return { + mediaIndex: i, + startTime: startTime + sumDurations(playlist, startIndex, i) + }; + } + } + + // We are out of possible candidates so load the last one... + return { + mediaIndex: numSegments - 1, + startTime: currentTime + }; + }; + + /** + * Check whether the playlist is blacklisted or not. + * + * @param {Object} playlist the media playlist object + * @return {boolean} whether the playlist is blacklisted or not + * @function isBlacklisted + */ + var isBlacklisted = function isBlacklisted(playlist) { + return playlist.excludeUntil && playlist.excludeUntil > Date.now(); + }; + + /** + * Check whether the playlist is compatible with current playback configuration or has + * been blacklisted permanently for being incompatible. + * + * @param {Object} playlist the media playlist object + * @return {boolean} whether the playlist is incompatible or not + * @function isIncompatible + */ + var isIncompatible = function isIncompatible(playlist) { + return playlist.excludeUntil && playlist.excludeUntil === Infinity; + }; + + /** + * Check whether the playlist is enabled or not. + * + * @param {Object} playlist the media playlist object + * @return {boolean} whether the playlist is enabled or not + * @function isEnabled + */ + var isEnabled = function isEnabled(playlist) { + var blacklisted = isBlacklisted(playlist); + + return !playlist.disabled && !blacklisted; + }; + + /** + * Check whether the playlist has been manually disabled through the representations api. + * + * @param {Object} playlist the media playlist object + * @return {boolean} whether the playlist is disabled manually or not + * @function isDisabled + */ + var isDisabled = function isDisabled(playlist) { + return playlist.disabled; + }; + + /** + * Returns whether the current playlist is an AES encrypted HLS stream + * + * @return {Boolean} true if it's an AES encrypted HLS stream + */ + var isAes = function isAes(media) { + for (var i = 0; i < media.segments.length; i++) { + if (media.segments[i].key) { + return true; + } + } + return false; + }; + + /** + * Returns whether the current playlist contains fMP4 + * + * @return {Boolean} true if the playlist contains fMP4 + */ + var isFmp4 = function isFmp4(media) { + for (var i = 0; i < media.segments.length; i++) { + if (media.segments[i].map) { + return true; + } + } + return false; + }; + + /** + * Checks if the playlist has a value for the specified attribute + * + * @param {String} attr + * Attribute to check for + * @param {Object} playlist + * The media playlist object + * @return {Boolean} + * Whether the playlist contains a value for the attribute or not + * @function hasAttribute + */ + var hasAttribute = function hasAttribute(attr, playlist) { + return playlist.attributes && playlist.attributes[attr]; + }; + + /** + * Estimates the time required to complete a segment download from the specified playlist + * + * @param {Number} segmentDuration + * Duration of requested segment + * @param {Number} bandwidth + * Current measured bandwidth of the player + * @param {Object} playlist + * The media playlist object + * @param {Number=} bytesReceived + * Number of bytes already received for the request. Defaults to 0 + * @return {Number|NaN} + * The estimated time to request the segment. NaN if bandwidth information for + * the given playlist is unavailable + * @function estimateSegmentRequestTime + */ + var estimateSegmentRequestTime = function estimateSegmentRequestTime(segmentDuration, bandwidth, playlist) { + var bytesReceived = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 0; + + if (!hasAttribute('BANDWIDTH', playlist)) { + return NaN; + } + + var size = segmentDuration * playlist.attributes.BANDWIDTH; + + return (size - bytesReceived * 8) / bandwidth; + }; + + /* + * Returns whether the current playlist is the lowest rendition + * + * @return {Boolean} true if on lowest rendition + */ + var isLowestEnabledRendition = function isLowestEnabledRendition(master, media) { + if (master.playlists.length === 1) { + return true; + } + + var currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE; + + return master.playlists.filter(function (playlist) { + if (!isEnabled(playlist)) { + return false; + } + + return (playlist.attributes.BANDWIDTH || 0) < currentBandwidth; + }).length === 0; + }; + + // exports + var Playlist = { + duration: duration, + seekable: seekable, + safeLiveIndex: safeLiveIndex, + getMediaInfoForTime: getMediaInfoForTime, + isEnabled: isEnabled, + isDisabled: isDisabled, + isBlacklisted: isBlacklisted, + isIncompatible: isIncompatible, + playlistEnd: playlistEnd, + isAes: isAes, + isFmp4: isFmp4, + hasAttribute: hasAttribute, + estimateSegmentRequestTime: estimateSegmentRequestTime, + isLowestEnabledRendition: isLowestEnabledRendition + }; + + /** + * @file xhr.js + */ + + var videojsXHR = videojs$1.xhr, + mergeOptions$1$1 = videojs$1.mergeOptions; + + var xhrFactory = function xhrFactory() { + var xhr = function XhrFunction(options, callback) { + // Add a default timeout for all hls requests + options = mergeOptions$1$1({ + timeout: 45e3 + }, options); + + // Allow an optional user-specified function to modify the option + // object before we construct the xhr request + var beforeRequest = XhrFunction.beforeRequest || videojs$1.Hls.xhr.beforeRequest; + + if (beforeRequest && typeof beforeRequest === 'function') { + var newOptions = beforeRequest(options); + + if (newOptions) { + options = newOptions; + } + } + + var request = videojsXHR(options, function (error, response) { + var reqResponse = request.response; + + if (!error && reqResponse) { + request.responseTime = Date.now(); + request.roundTripTime = request.responseTime - request.requestTime; + request.bytesReceived = reqResponse.byteLength || reqResponse.length; + if (!request.bandwidth) { + request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000); + } + } + + if (response.headers) { + request.responseHeaders = response.headers; + } + + // videojs.xhr now uses a specific code on the error + // object to signal that a request has timed out instead + // of setting a boolean on the request object + if (error && error.code === 'ETIMEDOUT') { + request.timedout = true; + } + + // videojs.xhr no longer considers status codes outside of 200 and 0 + // (for file uris) to be errors, but the old XHR did, so emulate that + // behavior. Status 206 may be used in response to byterange requests. + if (!error && !request.aborted && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) { + error = new Error('XHR Failed with a response of: ' + (request && (reqResponse || request.responseText))); + } + + callback(error, request); + }); + var originalAbort = request.abort; + + request.abort = function () { + request.aborted = true; + return originalAbort.apply(request, arguments); + }; + request.uri = options.uri; + request.requestTime = Date.now(); + return request; + }; + + return xhr; + }; + + /** + * @file bin-utils.js + */ + + /** + * convert a TimeRange to text + * + * @param {TimeRange} range the timerange to use for conversion + * @param {Number} i the iterator on the range to convert + */ + var textRange = function textRange(range, i) { + return range.start(i) + '-' + range.end(i); + }; + + /** + * format a number as hex string + * + * @param {Number} e The number + * @param {Number} i the iterator + */ + var formatHexString = function formatHexString(e, i) { + var value = e.toString(16); + + return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : ''); + }; + var formatAsciiString = function formatAsciiString(e) { + if (e >= 0x20 && e < 0x7e) { + return String.fromCharCode(e); + } + return '.'; + }; + + /** + * Creates an object for sending to a web worker modifying properties that are TypedArrays + * into a new object with seperated properties for the buffer, byteOffset, and byteLength. + * + * @param {Object} message + * Object of properties and values to send to the web worker + * @return {Object} + * Modified message with TypedArray values expanded + * @function createTransferableMessage + */ + var createTransferableMessage = function createTransferableMessage(message) { + var transferable = {}; + + Object.keys(message).forEach(function (key) { + var value = message[key]; + + if (ArrayBuffer.isView(value)) { + transferable[key] = { + bytes: value.buffer, + byteOffset: value.byteOffset, + byteLength: value.byteLength + }; + } else { + transferable[key] = value; + } + }); + + return transferable; + }; + + /** + * Returns a unique string identifier for a media initialization + * segment. + */ + var initSegmentId = function initSegmentId(initSegment) { + var byterange = initSegment.byterange || { + length: Infinity, + offset: 0 + }; + + return [byterange.length, byterange.offset, initSegment.resolvedUri].join(','); + }; + + /** + * utils to help dump binary data to the console + */ + var hexDump = function hexDump(data) { + var bytes = Array.prototype.slice.call(data); + var step = 16; + var result = ''; + var hex = void 0; + var ascii = void 0; + + for (var j = 0; j < bytes.length / step; j++) { + hex = bytes.slice(j * step, j * step + step).map(formatHexString).join(''); + ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join(''); + result += hex + ' ' + ascii + '\n'; + } + + return result; + }; + + var tagDump = function tagDump(_ref) { + var bytes = _ref.bytes; + return hexDump(bytes); + }; + + var textRanges = function textRanges(ranges) { + var result = ''; + var i = void 0; + + for (i = 0; i < ranges.length; i++) { + result += textRange(ranges, i) + ' '; + } + return result; + }; + + var utils = /*#__PURE__*/Object.freeze({ + createTransferableMessage: createTransferableMessage, + initSegmentId: initSegmentId, + hexDump: hexDump, + tagDump: tagDump, + textRanges: textRanges + }); + + /** + * ranges + * + * Utilities for working with TimeRanges. + * + */ + + // Fudge factor to account for TimeRanges rounding + var TIME_FUDGE_FACTOR = 1 / 30; + // Comparisons between time values such as current time and the end of the buffered range + // can be misleading because of precision differences or when the current media has poorly + // aligned audio and video, which can cause values to be slightly off from what you would + // expect. This value is what we consider to be safe to use in such comparisons to account + // for these scenarios. + var SAFE_TIME_DELTA = TIME_FUDGE_FACTOR * 3; + var filterRanges = function filterRanges(timeRanges, predicate) { + var results = []; + var i = void 0; + + if (timeRanges && timeRanges.length) { + // Search for ranges that match the predicate + for (i = 0; i < timeRanges.length; i++) { + if (predicate(timeRanges.start(i), timeRanges.end(i))) { + results.push([timeRanges.start(i), timeRanges.end(i)]); + } + } + } + + return videojs$1.createTimeRanges(results); + }; + + /** + * Attempts to find the buffered TimeRange that contains the specified + * time. + * @param {TimeRanges} buffered - the TimeRanges object to query + * @param {number} time - the time to filter on. + * @returns {TimeRanges} a new TimeRanges object + */ + var findRange = function findRange(buffered, time) { + return filterRanges(buffered, function (start, end) { + return start - TIME_FUDGE_FACTOR <= time && end + TIME_FUDGE_FACTOR >= time; + }); + }; + + /** + * Returns the TimeRanges that begin later than the specified time. + * @param {TimeRanges} timeRanges - the TimeRanges object to query + * @param {number} time - the time to filter on. + * @returns {TimeRanges} a new TimeRanges object. + */ + var findNextRange = function findNextRange(timeRanges, time) { + return filterRanges(timeRanges, function (start) { + return start - TIME_FUDGE_FACTOR >= time; + }); + }; + + /** + * Returns gaps within a list of TimeRanges + * @param {TimeRanges} buffered - the TimeRanges object + * @return {TimeRanges} a TimeRanges object of gaps + */ + var findGaps = function findGaps(buffered) { + if (buffered.length < 2) { + return videojs$1.createTimeRanges(); + } + + var ranges = []; + + for (var i = 1; i < buffered.length; i++) { + var start = buffered.end(i - 1); + var end = buffered.start(i); + + ranges.push([start, end]); + } + + return videojs$1.createTimeRanges(ranges); + }; + + /** + * Gets a human readable string for a TimeRange + * + * @param {TimeRange} range + * @returns {String} a human readable string + */ + var printableRange = function printableRange(range) { + var strArr = []; + + if (!range || !range.length) { + return ''; + } + + for (var i = 0; i < range.length; i++) { + strArr.push(range.start(i) + ' => ' + range.end(i)); + } + + return strArr.join(', '); + }; + + /** + * Calculates the amount of time left in seconds until the player hits the end of the + * buffer and causes a rebuffer + * + * @param {TimeRange} buffered + * The state of the buffer + * @param {Numnber} currentTime + * The current time of the player + * @param {Number} playbackRate + * The current playback rate of the player. Defaults to 1. + * @return {Number} + * Time until the player has to start rebuffering in seconds. + * @function timeUntilRebuffer + */ + var timeUntilRebuffer = function timeUntilRebuffer(buffered, currentTime) { + var playbackRate = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1; + + var bufferedEnd = buffered.length ? buffered.end(buffered.length - 1) : 0; + + return (bufferedEnd - currentTime) / playbackRate; + }; + + /** + * Converts a TimeRanges object into an array representation + * @param {TimeRanges} timeRanges + * @returns {Array} + */ + var timeRangesToArray = function timeRangesToArray(timeRanges) { + var timeRangesList = []; + + for (var i = 0; i < timeRanges.length; i++) { + timeRangesList.push({ + start: timeRanges.start(i), + end: timeRanges.end(i) + }); + } + + return timeRangesList; + }; + + /** + * @file create-text-tracks-if-necessary.js + */ + + /** + * Create text tracks on video.js if they exist on a segment. + * + * @param {Object} sourceBuffer the VSB or FSB + * @param {Object} mediaSource the HTML media source + * @param {Object} segment the segment that may contain the text track + * @private + */ + var createTextTracksIfNecessary = function createTextTracksIfNecessary(sourceBuffer, mediaSource, segment) { + var player = mediaSource.player_; + + // create an in-band caption track if one is present in the segment + if (segment.captions && segment.captions.length) { + if (!sourceBuffer.inbandTextTracks_) { + sourceBuffer.inbandTextTracks_ = {}; + } + + for (var trackId in segment.captionStreams) { + if (!sourceBuffer.inbandTextTracks_[trackId]) { + player.tech_.trigger({ type: 'usage', name: 'hls-608' }); + var track = player.textTracks().getTrackById(trackId); + + if (track) { + // Resuse an existing track with a CC# id because this was + // very likely created by videojs-contrib-hls from information + // in the m3u8 for us to use + sourceBuffer.inbandTextTracks_[trackId] = track; + } else { + // Otherwise, create a track with the default `CC#` label and + // without a language + sourceBuffer.inbandTextTracks_[trackId] = player.addRemoteTextTrack({ + kind: 'captions', + id: trackId, + label: trackId + }, false).track; + } + } + } + } + + if (segment.metadata && segment.metadata.length && !sourceBuffer.metadataTrack_) { + sourceBuffer.metadataTrack_ = player.addRemoteTextTrack({ + kind: 'metadata', + label: 'Timed Metadata' + }, false).track; + sourceBuffer.metadataTrack_.inBandMetadataTrackDispatchType = segment.metadata.dispatchType; + } + }; + + /** + * @file remove-cues-from-track.js + */ + + /** + * Remove cues from a track on video.js. + * + * @param {Double} start start of where we should remove the cue + * @param {Double} end end of where the we should remove the cue + * @param {Object} track the text track to remove the cues from + * @private + */ + var removeCuesFromTrack = function removeCuesFromTrack(start, end, track) { + var i = void 0; + var cue = void 0; + + if (!track) { + return; + } + + if (!track.cues) { + return; + } + + i = track.cues.length; + + while (i--) { + cue = track.cues[i]; + + // Remove any overlapping cue + if (cue.startTime <= end && cue.endTime >= start) { + track.removeCue(cue); + } + } + }; + + /** + * @file add-text-track-data.js + */ + /** + * Define properties on a cue for backwards compatability, + * but warn the user that the way that they are using it + * is depricated and will be removed at a later date. + * + * @param {Cue} cue the cue to add the properties on + * @private + */ + var deprecateOldCue = function deprecateOldCue(cue) { + Object.defineProperties(cue.frame, { + id: { + get: function get$$1() { + videojs$1.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.'); + return cue.value.key; + } + }, + value: { + get: function get$$1() { + videojs$1.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.'); + return cue.value.data; + } + }, + privateData: { + get: function get$$1() { + videojs$1.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.'); + return cue.value.data; + } + } + }); + }; + + var durationOfVideo = function durationOfVideo(duration) { + var dur = void 0; + + if (isNaN(duration) || Math.abs(duration) === Infinity) { + dur = Number.MAX_VALUE; + } else { + dur = duration; + } + return dur; + }; + /** + * Add text track data to a source handler given the captions and + * metadata from the buffer. + * + * @param {Object} sourceHandler the virtual source buffer + * @param {Array} captionArray an array of caption data + * @param {Array} metadataArray an array of meta data + * @private + */ + var addTextTrackData = function addTextTrackData(sourceHandler, captionArray, metadataArray) { + var Cue = window_1.WebKitDataCue || window_1.VTTCue; + + if (captionArray) { + captionArray.forEach(function (caption) { + var track = caption.stream; + + this.inbandTextTracks_[track].addCue(new Cue(caption.startTime + this.timestampOffset, caption.endTime + this.timestampOffset, caption.text)); + }, sourceHandler); + } + + if (metadataArray) { + var videoDuration = durationOfVideo(sourceHandler.mediaSource_.duration); + + metadataArray.forEach(function (metadata) { + var time = metadata.cueTime + this.timestampOffset; + + metadata.frames.forEach(function (frame) { + var cue = new Cue(time, time, frame.value || frame.url || frame.data || ''); + + cue.frame = frame; + cue.value = frame; + deprecateOldCue(cue); + + this.metadataTrack_.addCue(cue); + }, this); + }, sourceHandler); + + // Updating the metadeta cues so that + // the endTime of each cue is the startTime of the next cue + // the endTime of last cue is the duration of the video + if (sourceHandler.metadataTrack_ && sourceHandler.metadataTrack_.cues && sourceHandler.metadataTrack_.cues.length) { + var cues = sourceHandler.metadataTrack_.cues; + var cuesArray = []; + + // Create a copy of the TextTrackCueList... + // ...disregarding cues with a falsey value + for (var i = 0; i < cues.length; i++) { + if (cues[i]) { + cuesArray.push(cues[i]); + } + } + + // Group cues by their startTime value + var cuesGroupedByStartTime = cuesArray.reduce(function (obj, cue) { + var timeSlot = obj[cue.startTime] || []; + + timeSlot.push(cue); + obj[cue.startTime] = timeSlot; + + return obj; + }, {}); + + // Sort startTimes by ascending order + var sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort(function (a, b) { + return Number(a) - Number(b); + }); + + // Map each cue group's endTime to the next group's startTime + sortedStartTimes.forEach(function (startTime, idx) { + var cueGroup = cuesGroupedByStartTime[startTime]; + var nextTime = Number(sortedStartTimes[idx + 1]) || videoDuration; + + // Map each cue's endTime the next group's startTime + cueGroup.forEach(function (cue) { + cue.endTime = nextTime; + }); + }); + } + } + }; + + var win$1 = typeof window !== 'undefined' ? window : {}, + TARGET = typeof Symbol === 'undefined' ? '__target' : Symbol(), + SCRIPT_TYPE = 'application/javascript', + BlobBuilder = win$1.BlobBuilder || win$1.WebKitBlobBuilder || win$1.MozBlobBuilder || win$1.MSBlobBuilder, + URL = win$1.URL || win$1.webkitURL || URL && URL.msURL, + Worker = win$1.Worker; + + /** + * Returns a wrapper around Web Worker code that is constructible. + * + * @function shimWorker + * + * @param { String } filename The name of the file + * @param { Function } fn Function wrapping the code of the worker + */ + function shimWorker(filename, fn) { + return function ShimWorker(forceFallback) { + var o = this; + + if (!fn) { + return new Worker(filename); + } else if (Worker && !forceFallback) { + // Convert the function's inner code to a string to construct the worker + var source = fn.toString().replace(/^function.+?{/, '').slice(0, -1), + objURL = createSourceObject(source); + + this[TARGET] = new Worker(objURL); + wrapTerminate(this[TARGET], objURL); + return this[TARGET]; + } else { + var selfShim = { + postMessage: function postMessage(m) { + if (o.onmessage) { + setTimeout(function () { + o.onmessage({ data: m, target: selfShim }); + }); + } + } + }; + + fn.call(selfShim); + this.postMessage = function (m) { + setTimeout(function () { + selfShim.onmessage({ data: m, target: o }); + }); + }; + this.isThisThread = true; + } + }; + } + // Test Worker capabilities + if (Worker) { + var testWorker, + objURL = createSourceObject('self.onmessage = function () {}'), + testArray = new Uint8Array(1); + + try { + testWorker = new Worker(objURL); + + // Native browser on some Samsung devices throws for transferables, let's detect it + testWorker.postMessage(testArray, [testArray.buffer]); + } catch (e) { + Worker = null; + } finally { + URL.revokeObjectURL(objURL); + if (testWorker) { + testWorker.terminate(); + } + } + } + + function createSourceObject(str) { + try { + return URL.createObjectURL(new Blob([str], { type: SCRIPT_TYPE })); + } catch (e) { + var blob = new BlobBuilder(); + blob.append(str); + return URL.createObjectURL(blob.getBlob(type)); + } + } + + function wrapTerminate(worker, objURL) { + if (!worker || !objURL) return; + var term = worker.terminate; + worker.objURL = objURL; + worker.terminate = function () { + if (worker.objURL) URL.revokeObjectURL(worker.objURL); + term.call(worker); + }; + } + + var TransmuxWorker = new shimWorker("./transmuxer-worker.worker.js", function (window, document$$1) { + var self = this; + var transmuxerWorker = function () { + + /** + * mux.js + * + * Copyright (c) 2015 Brightcove + * All rights reserved. + * + * Functions that generate fragmented MP4s suitable for use with Media + * Source Extensions. + */ + + var UINT32_MAX = Math.pow(2, 32) - 1; + + var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; + + // pre-calculate constants + (function () { + var i; + types = { + avc1: [], // codingname + avcC: [], + btrt: [], + dinf: [], + dref: [], + esds: [], + ftyp: [], + hdlr: [], + mdat: [], + mdhd: [], + mdia: [], + mfhd: [], + minf: [], + moof: [], + moov: [], + mp4a: [], // codingname + mvex: [], + mvhd: [], + sdtp: [], + smhd: [], + stbl: [], + stco: [], + stsc: [], + stsd: [], + stsz: [], + stts: [], + styp: [], + tfdt: [], + tfhd: [], + traf: [], + trak: [], + trun: [], + trex: [], + tkhd: [], + vmhd: [] + }; + + // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we + // don't throw an error + if (typeof Uint8Array === 'undefined') { + return; + } + + for (i in types) { + if (types.hasOwnProperty(i)) { + types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)]; + } + } + + MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]); + AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]); + MINOR_VERSION = new Uint8Array([0, 0, 0, 1]); + VIDEO_HDLR = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00, // pre_defined + 0x76, 0x69, 0x64, 0x65, // handler_type: 'vide' + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler' + ]); + AUDIO_HDLR = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00, // pre_defined + 0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun' + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler' + ]); + HDLR_TYPES = { + video: VIDEO_HDLR, + audio: AUDIO_HDLR + }; + DREF = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x01, // entry_count + 0x00, 0x00, 0x00, 0x0c, // entry_size + 0x75, 0x72, 0x6c, 0x20, // 'url' type + 0x00, // version 0 + 0x00, 0x00, 0x01 // entry_flags + ]); + SMHD = new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, // balance, 0 means centered + 0x00, 0x00 // reserved + ]); + STCO = new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00 // entry_count + ]); + STSC = STCO; + STSZ = new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x00, // sample_size + 0x00, 0x00, 0x00, 0x00 // sample_count + ]); + STTS = STCO; + VMHD = new Uint8Array([0x00, // version + 0x00, 0x00, 0x01, // flags + 0x00, 0x00, // graphicsmode + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor + ]); + })(); + + box = function box(type) { + var payload = [], + size = 0, + i, + result, + view; + + for (i = 1; i < arguments.length; i++) { + payload.push(arguments[i]); + } + + i = payload.length; + + // calculate the total size we need to allocate + while (i--) { + size += payload[i].byteLength; + } + result = new Uint8Array(size + 8); + view = new DataView(result.buffer, result.byteOffset, result.byteLength); + view.setUint32(0, result.byteLength); + result.set(type, 4); + + // copy the payload into the result + for (i = 0, size = 8; i < payload.length; i++) { + result.set(payload[i], size); + size += payload[i].byteLength; + } + return result; + }; + + dinf = function dinf() { + return box(types.dinf, box(types.dref, DREF)); + }; + + esds = function esds(track) { + return box(types.esds, new Uint8Array([0x00, // version + 0x00, 0x00, 0x00, // flags + + // ES_Descriptor + 0x03, // tag, ES_DescrTag + 0x19, // length + 0x00, 0x00, // ES_ID + 0x00, // streamDependenceFlag, URL_flag, reserved, streamPriority + + // DecoderConfigDescriptor + 0x04, // tag, DecoderConfigDescrTag + 0x11, // length + 0x40, // object type + 0x15, // streamType + 0x00, 0x06, 0x00, // bufferSizeDB + 0x00, 0x00, 0xda, 0xc0, // maxBitrate + 0x00, 0x00, 0xda, 0xc0, // avgBitrate + + // DecoderSpecificInfo + 0x05, // tag, DecoderSpecificInfoTag + 0x02, // length + // ISO/IEC 14496-3, AudioSpecificConfig + // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35 + track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig + ])); + }; + + ftyp = function ftyp() { + return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND); + }; + + hdlr = function hdlr(type) { + return box(types.hdlr, HDLR_TYPES[type]); + }; + mdat = function mdat(data) { + return box(types.mdat, data); + }; + mdhd = function mdhd(track) { + var result = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x02, // creation_time + 0x00, 0x00, 0x00, 0x03, // modification_time + 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second + + track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF, // duration + 0x55, 0xc4, // 'und' language (undetermined) + 0x00, 0x00]); + + // Use the sample rate from the track metadata, when it is + // defined. The sample rate can be parsed out of an ADTS header, for + // instance. + if (track.samplerate) { + result[12] = track.samplerate >>> 24 & 0xFF; + result[13] = track.samplerate >>> 16 & 0xFF; + result[14] = track.samplerate >>> 8 & 0xFF; + result[15] = track.samplerate & 0xFF; + } + + return box(types.mdhd, result); + }; + mdia = function mdia(track) { + return box(types.mdia, mdhd(track), hdlr(track.type), minf(track)); + }; + mfhd = function mfhd(sequenceNumber) { + return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00, // flags + (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number + ])); + }; + minf = function minf(track) { + return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track)); + }; + moof = function moof(sequenceNumber, tracks) { + var trackFragments = [], + i = tracks.length; + // build traf boxes for each track fragment + while (i--) { + trackFragments[i] = traf(tracks[i]); + } + return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments)); + }; + /** + * Returns a movie box. + * @param tracks {array} the tracks associated with this movie + * @see ISO/IEC 14496-12:2012(E), section 8.2.1 + */ + moov = function moov(tracks) { + var i = tracks.length, + boxes = []; + + while (i--) { + boxes[i] = trak(tracks[i]); + } + + return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks))); + }; + mvex = function mvex(tracks) { + var i = tracks.length, + boxes = []; + + while (i--) { + boxes[i] = trex(tracks[i]); + } + return box.apply(null, [types.mvex].concat(boxes)); + }; + mvhd = function mvhd(duration) { + var bytes = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x01, // creation_time + 0x00, 0x00, 0x00, 0x02, // modification_time + 0x00, 0x01, 0x5f, 0x90, // timescale, 90,000 "ticks" per second + (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF, // duration + 0x00, 0x01, 0x00, 0x00, // 1.0 rate + 0x01, 0x00, // 1.0 volume + 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined + 0xff, 0xff, 0xff, 0xff // next_track_ID + ]); + return box(types.mvhd, bytes); + }; + + sdtp = function sdtp(track) { + var samples = track.samples || [], + bytes = new Uint8Array(4 + samples.length), + flags, + i; + + // leave the full box header (4 bytes) all zero + + // write the sample table + for (i = 0; i < samples.length; i++) { + flags = samples[i].flags; + + bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy; + } + + return box(types.sdtp, bytes); + }; + + stbl = function stbl(track) { + return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO)); + }; + + (function () { + var videoSample, audioSample; + + stsd = function stsd(track) { + + return box(types.stsd, new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + 0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track)); + }; + + videoSample = function videoSample(track) { + var sps = track.sps || [], + pps = track.pps || [], + sequenceParameterSets = [], + pictureParameterSets = [], + i; + + // assemble the SPSs + for (i = 0; i < sps.length; i++) { + sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8); + sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength + sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS + } + + // assemble the PPSs + for (i = 0; i < pps.length; i++) { + pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8); + pictureParameterSets.push(pps[i].byteLength & 0xFF); + pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i])); + } + + return box(types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, // data_reference_index + 0x00, 0x00, // pre_defined + 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined + (track.width & 0xff00) >> 8, track.width & 0xff, // width + (track.height & 0xff00) >> 8, track.height & 0xff, // height + 0x00, 0x48, 0x00, 0x00, // horizresolution + 0x00, 0x48, 0x00, 0x00, // vertresolution + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, // frame_count + 0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname + 0x00, 0x18, // depth = 24 + 0x11, 0x11 // pre_defined = -1 + ]), box(types.avcC, new Uint8Array([0x01, // configurationVersion + track.profileIdc, // AVCProfileIndication + track.profileCompatibility, // profile_compatibility + track.levelIdc, // AVCLevelIndication + 0xff // lengthSizeMinusOne, hard-coded to 4 bytes + ].concat([sps.length // numOfSequenceParameterSets + ]).concat(sequenceParameterSets).concat([pps.length // numOfPictureParameterSets + ]).concat(pictureParameterSets))), // "PPS" + box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB + 0x00, 0x2d, 0xc6, 0xc0, // maxBitrate + 0x00, 0x2d, 0xc6, 0xc0])) // avgBitrate + ); + }; + + audioSample = function audioSample(track) { + return box(types.mp4a, new Uint8Array([ + + // SampleEntry, ISO/IEC 14496-12 + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x01, // data_reference_index + + // AudioSampleEntry, ISO/IEC 14496-12 + 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, 0x00, 0x00, // reserved + (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff, // channelcount + + (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff, // samplesize + 0x00, 0x00, // pre_defined + 0x00, 0x00, // reserved + + (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16 + + // MP4AudioSampleEntry, ISO/IEC 14496-14 + ]), esds(track)); + }; + })(); + + tkhd = function tkhd(track) { + var result = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x07, // flags + 0x00, 0x00, 0x00, 0x00, // creation_time + 0x00, 0x00, 0x00, 0x00, // modification_time + (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID + 0x00, 0x00, 0x00, 0x00, // reserved + (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF, // duration + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved + 0x00, 0x00, // layer + 0x00, 0x00, // alternate_group + 0x01, 0x00, // non-audio track volume + 0x00, 0x00, // reserved + 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix + (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00, // width + (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height + ]); + + return box(types.tkhd, result); + }; + + /** + * Generate a track fragment (traf) box. A traf box collects metadata + * about tracks in a movie fragment (moof) box. + */ + traf = function traf(track) { + var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime; + + trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x3a, // flags + (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID + 0x00, 0x00, 0x00, 0x01, // sample_description_index + 0x00, 0x00, 0x00, 0x00, // default_sample_duration + 0x00, 0x00, 0x00, 0x00, // default_sample_size + 0x00, 0x00, 0x00, 0x00 // default_sample_flags + ])); + + upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / (UINT32_MAX + 1)); + lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % (UINT32_MAX + 1)); + + trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01, // version 1 + 0x00, 0x00, 0x00, // flags + // baseMediaDecodeTime + upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); + + // the data offset specifies the number of bytes from the start of + // the containing moof to the first payload byte of the associated + // mdat + dataOffset = 32 + // tfhd + 20 + // tfdt + 8 + // traf header + 16 + // mfhd + 8 + // moof header + 8; // mdat header + + // audio tracks require less metadata + if (track.type === 'audio') { + trackFragmentRun = trun(track, dataOffset); + return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun); + } + + // video tracks should contain an independent and disposable samples + // box (sdtp) + // generate one and adjust offsets to match + sampleDependencyTable = sdtp(track); + trackFragmentRun = trun(track, sampleDependencyTable.length + dataOffset); + return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable); + }; + + /** + * Generate a track box. + * @param track {object} a track definition + * @return {Uint8Array} the track box + */ + trak = function trak(track) { + track.duration = track.duration || 0xffffffff; + return box(types.trak, tkhd(track), mdia(track)); + }; + + trex = function trex(track) { + var result = new Uint8Array([0x00, // version 0 + 0x00, 0x00, 0x00, // flags + (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF, // track_ID + 0x00, 0x00, 0x00, 0x01, // default_sample_description_index + 0x00, 0x00, 0x00, 0x00, // default_sample_duration + 0x00, 0x00, 0x00, 0x00, // default_sample_size + 0x00, 0x01, 0x00, 0x01 // default_sample_flags + ]); + // the last two bytes of default_sample_flags is the sample + // degradation priority, a hint about the importance of this sample + // relative to others. Lower the degradation priority for all sample + // types other than video. + if (track.type !== 'video') { + result[result.length - 1] = 0x00; + } + + return box(types.trex, result); + }; + + (function () { + var audioTrun, videoTrun, trunHeader; + + // This method assumes all samples are uniform. That is, if a + // duration is present for the first sample, it will be present for + // all subsequent samples. + // see ISO/IEC 14496-12:2012, Section 8.8.8.1 + trunHeader = function trunHeader(samples, offset) { + var durationPresent = 0, + sizePresent = 0, + flagsPresent = 0, + compositionTimeOffset = 0; + + // trun flag constants + if (samples.length) { + if (samples[0].duration !== undefined) { + durationPresent = 0x1; + } + if (samples[0].size !== undefined) { + sizePresent = 0x2; + } + if (samples[0].flags !== undefined) { + flagsPresent = 0x4; + } + if (samples[0].compositionTimeOffset !== undefined) { + compositionTimeOffset = 0x8; + } + } + + return [0x00, // version 0 + 0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01, // flags + (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF, // sample_count + (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset + ]; + }; + + videoTrun = function videoTrun(track, offset) { + var bytes, samples, sample, i; + + samples = track.samples || []; + offset += 8 + 12 + 16 * samples.length; + + bytes = trunHeader(samples, offset); + + for (i = 0; i < samples.length; i++) { + sample = samples[i]; + bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration + (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF, // sample_size + sample.flags.isLeading << 2 | sample.flags.dependsOn, sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample, sample.flags.degradationPriority & 0xF0 << 8, sample.flags.degradationPriority & 0x0F, // sample_flags + (sample.compositionTimeOffset & 0xFF000000) >>> 24, (sample.compositionTimeOffset & 0xFF0000) >>> 16, (sample.compositionTimeOffset & 0xFF00) >>> 8, sample.compositionTimeOffset & 0xFF // sample_composition_time_offset + ]); + } + return box(types.trun, new Uint8Array(bytes)); + }; + + audioTrun = function audioTrun(track, offset) { + var bytes, samples, sample, i; + + samples = track.samples || []; + offset += 8 + 12 + 8 * samples.length; + + bytes = trunHeader(samples, offset); + + for (i = 0; i < samples.length; i++) { + sample = samples[i]; + bytes = bytes.concat([(sample.duration & 0xFF000000) >>> 24, (sample.duration & 0xFF0000) >>> 16, (sample.duration & 0xFF00) >>> 8, sample.duration & 0xFF, // sample_duration + (sample.size & 0xFF000000) >>> 24, (sample.size & 0xFF0000) >>> 16, (sample.size & 0xFF00) >>> 8, sample.size & 0xFF]); // sample_size + } + + return box(types.trun, new Uint8Array(bytes)); + }; + + trun = function trun(track, offset) { + if (track.type === 'audio') { + return audioTrun(track, offset); + } + + return videoTrun(track, offset); + }; + })(); + + var mp4Generator = { + ftyp: ftyp, + mdat: mdat, + moof: moof, + moov: moov, + initSegment: function initSegment(tracks) { + var fileType = ftyp(), + movie = moov(tracks), + result; + + result = new Uint8Array(fileType.byteLength + movie.byteLength); + result.set(fileType); + result.set(movie, fileType.byteLength); + return result; + } + }; + + var toUnsigned = function toUnsigned(value) { + return value >>> 0; + }; + + var bin = { + toUnsigned: toUnsigned + }; + + var toUnsigned$1 = bin.toUnsigned; + var _findBox, parseType, timescale, startTime, getVideoTrackIds; + + // Find the data for a box specified by its path + _findBox = function findBox(data, path) { + var results = [], + i, + size, + type, + end, + subresults; + + if (!path.length) { + // short-circuit the search for empty paths + return null; + } + + for (i = 0; i < data.byteLength;) { + size = toUnsigned$1(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]); + + type = parseType(data.subarray(i + 4, i + 8)); + + end = size > 1 ? i + size : data.byteLength; + + if (type === path[0]) { + if (path.length === 1) { + // this is the end of the path and we've found the box we were + // looking for + results.push(data.subarray(i + 8, end)); + } else { + // recursively search for the next box along the path + subresults = _findBox(data.subarray(i + 8, end), path.slice(1)); + if (subresults.length) { + results = results.concat(subresults); + } + } + } + i = end; + } + + // we've finished searching all of data + return results; + }; + + /** + * Returns the string representation of an ASCII encoded four byte buffer. + * @param buffer {Uint8Array} a four-byte buffer to translate + * @return {string} the corresponding string + */ + parseType = function parseType(buffer) { + var result = ''; + result += String.fromCharCode(buffer[0]); + result += String.fromCharCode(buffer[1]); + result += String.fromCharCode(buffer[2]); + result += String.fromCharCode(buffer[3]); + return result; + }; + + /** + * Parses an MP4 initialization segment and extracts the timescale + * values for any declared tracks. Timescale values indicate the + * number of clock ticks per second to assume for time-based values + * elsewhere in the MP4. + * + * To determine the start time of an MP4, you need two pieces of + * information: the timescale unit and the earliest base media decode + * time. Multiple timescales can be specified within an MP4 but the + * base media decode time is always expressed in the timescale from + * the media header box for the track: + * ``` + * moov > trak > mdia > mdhd.timescale + * ``` + * @param init {Uint8Array} the bytes of the init segment + * @return {object} a hash of track ids to timescale values or null if + * the init segment is malformed. + */ + timescale = function timescale(init) { + var result = {}, + traks = _findBox(init, ['moov', 'trak']); + + // mdhd timescale + return traks.reduce(function (result, trak) { + var tkhd, version, index, id, mdhd; + + tkhd = _findBox(trak, ['tkhd'])[0]; + if (!tkhd) { + return null; + } + version = tkhd[0]; + index = version === 0 ? 12 : 20; + id = toUnsigned$1(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]); + + mdhd = _findBox(trak, ['mdia', 'mdhd'])[0]; + if (!mdhd) { + return null; + } + version = mdhd[0]; + index = version === 0 ? 12 : 20; + result[id] = toUnsigned$1(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]); + return result; + }, result); + }; + + /** + * Determine the base media decode start time, in seconds, for an MP4 + * fragment. If multiple fragments are specified, the earliest time is + * returned. + * + * The base media decode time can be parsed from track fragment + * metadata: + * ``` + * moof > traf > tfdt.baseMediaDecodeTime + * ``` + * It requires the timescale value from the mdhd to interpret. + * + * @param timescale {object} a hash of track ids to timescale values. + * @return {number} the earliest base media decode start time for the + * fragment, in seconds + */ + startTime = function startTime(timescale, fragment) { + var trafs, baseTimes, result; + + // we need info from two childrend of each track fragment box + trafs = _findBox(fragment, ['moof', 'traf']); + + // determine the start times for each track + baseTimes = [].concat.apply([], trafs.map(function (traf) { + return _findBox(traf, ['tfhd']).map(function (tfhd) { + var id, scale, baseTime; + + // get the track id from the tfhd + id = toUnsigned$1(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); + // assume a 90kHz clock if no timescale was specified + scale = timescale[id] || 90e3; + + // get the base media decode time from the tfdt + baseTime = _findBox(traf, ['tfdt']).map(function (tfdt) { + var version, result; + + version = tfdt[0]; + result = toUnsigned$1(tfdt[4] << 24 | tfdt[5] << 16 | tfdt[6] << 8 | tfdt[7]); + if (version === 1) { + result *= Math.pow(2, 32); + result += toUnsigned$1(tfdt[8] << 24 | tfdt[9] << 16 | tfdt[10] << 8 | tfdt[11]); + } + return result; + })[0]; + baseTime = baseTime || Infinity; + + // convert base time to seconds + return baseTime / scale; + }); + })); + + // return the minimum + result = Math.min.apply(null, baseTimes); + return isFinite(result) ? result : 0; + }; + + /** + * Find the trackIds of the video tracks in this source. + * Found by parsing the Handler Reference and Track Header Boxes: + * moov > trak > mdia > hdlr + * moov > trak > tkhd + * + * @param {Uint8Array} init - The bytes of the init segment for this source + * @return {Number[]} A list of trackIds + * + * @see ISO-BMFF-12/2015, Section 8.4.3 + **/ + getVideoTrackIds = function getVideoTrackIds(init) { + var traks = _findBox(init, ['moov', 'trak']); + var videoTrackIds = []; + + traks.forEach(function (trak) { + var hdlrs = _findBox(trak, ['mdia', 'hdlr']); + var tkhds = _findBox(trak, ['tkhd']); + + hdlrs.forEach(function (hdlr, index) { + var handlerType = parseType(hdlr.subarray(8, 12)); + var tkhd = tkhds[index]; + var view; + var version; + var trackId; + + if (handlerType === 'vide') { + view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength); + version = view.getUint8(0); + trackId = version === 0 ? view.getUint32(12) : view.getUint32(20); + + videoTrackIds.push(trackId); + } + }); + }); + + return videoTrackIds; + }; + + var probe$$1 = { + findBox: _findBox, + parseType: parseType, + timescale: timescale, + startTime: startTime, + videoTrackIds: getVideoTrackIds + }; + + /** + * mux.js + * + * Copyright (c) 2014 Brightcove + * All rights reserved. + * + * A lightweight readable stream implemention that handles event dispatching. + * Objects that inherit from streams should call init in their constructors. + */ + + var Stream = function Stream() { + this.init = function () { + var listeners = {}; + /** + * Add a listener for a specified event type. + * @param type {string} the event name + * @param listener {function} the callback to be invoked when an event of + * the specified type occurs + */ + this.on = function (type, listener) { + if (!listeners[type]) { + listeners[type] = []; + } + listeners[type] = listeners[type].concat(listener); + }; + /** + * Remove a listener for a specified event type. + * @param type {string} the event name + * @param listener {function} a function previously registered for this + * type of event through `on` + */ + this.off = function (type, listener) { + var index; + if (!listeners[type]) { + return false; + } + index = listeners[type].indexOf(listener); + listeners[type] = listeners[type].slice(); + listeners[type].splice(index, 1); + return index > -1; + }; + /** + * Trigger an event of the specified type on this stream. Any additional + * arguments to this function are passed as parameters to event listeners. + * @param type {string} the event name + */ + this.trigger = function (type) { + var callbacks, i, length, args; + callbacks = listeners[type]; + if (!callbacks) { + return; + } + // Slicing the arguments on every invocation of this method + // can add a significant amount of overhead. Avoid the + // intermediate object creation for the common case of a + // single callback argument + if (arguments.length === 2) { + length = callbacks.length; + for (i = 0; i < length; ++i) { + callbacks[i].call(this, arguments[1]); + } + } else { + args = []; + i = arguments.length; + for (i = 1; i < arguments.length; ++i) { + args.push(arguments[i]); + } + length = callbacks.length; + for (i = 0; i < length; ++i) { + callbacks[i].apply(this, args); + } + } + }; + /** + * Destroys the stream and cleans up. + */ + this.dispose = function () { + listeners = {}; + }; + }; + }; + + /** + * Forwards all `data` events on this stream to the destination stream. The + * destination stream should provide a method `push` to receive the data + * events as they arrive. + * @param destination {stream} the stream that will receive all `data` events + * @param autoFlush {boolean} if false, we will not call `flush` on the destination + * when the current stream emits a 'done' event + * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options + */ + Stream.prototype.pipe = function (destination) { + this.on('data', function (data) { + destination.push(data); + }); + + this.on('done', function (flushSource) { + destination.flush(flushSource); + }); + + return destination; + }; + + // Default stream functions that are expected to be overridden to perform + // actual work. These are provided by the prototype as a sort of no-op + // implementation so that we don't have to check for their existence in the + // `pipe` function above. + Stream.prototype.push = function (data) { + this.trigger('data', data); + }; + + Stream.prototype.flush = function (flushSource) { + this.trigger('done', flushSource); + }; + + var stream = Stream; + + // Convert an array of nal units into an array of frames with each frame being + // composed of the nal units that make up that frame + // Also keep track of cummulative data about the frame from the nal units such + // as the frame duration, starting pts, etc. + var groupNalsIntoFrames = function groupNalsIntoFrames(nalUnits) { + var i, + currentNal, + currentFrame = [], + frames = []; + + currentFrame.byteLength = 0; + + for (i = 0; i < nalUnits.length; i++) { + currentNal = nalUnits[i]; + + // Split on 'aud'-type nal units + if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') { + // Since the very first nal unit is expected to be an AUD + // only push to the frames array when currentFrame is not empty + if (currentFrame.length) { + currentFrame.duration = currentNal.dts - currentFrame.dts; + frames.push(currentFrame); + } + currentFrame = [currentNal]; + currentFrame.byteLength = currentNal.data.byteLength; + currentFrame.pts = currentNal.pts; + currentFrame.dts = currentNal.dts; + } else { + // Specifically flag key frames for ease of use later + if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') { + currentFrame.keyFrame = true; + } + currentFrame.duration = currentNal.dts - currentFrame.dts; + currentFrame.byteLength += currentNal.data.byteLength; + currentFrame.push(currentNal); + } + } + + // For the last frame, use the duration of the previous frame if we + // have nothing better to go on + if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) { + currentFrame.duration = frames[frames.length - 1].duration; + } + + // Push the final frame + frames.push(currentFrame); + return frames; + }; + + // Convert an array of frames into an array of Gop with each Gop being composed + // of the frames that make up that Gop + // Also keep track of cummulative data about the Gop from the frames such as the + // Gop duration, starting pts, etc. + var groupFramesIntoGops = function groupFramesIntoGops(frames) { + var i, + currentFrame, + currentGop = [], + gops = []; + + // We must pre-set some of the values on the Gop since we + // keep running totals of these values + currentGop.byteLength = 0; + currentGop.nalCount = 0; + currentGop.duration = 0; + currentGop.pts = frames[0].pts; + currentGop.dts = frames[0].dts; + + // store some metadata about all the Gops + gops.byteLength = 0; + gops.nalCount = 0; + gops.duration = 0; + gops.pts = frames[0].pts; + gops.dts = frames[0].dts; + + for (i = 0; i < frames.length; i++) { + currentFrame = frames[i]; + + if (currentFrame.keyFrame) { + // Since the very first frame is expected to be an keyframe + // only push to the gops array when currentGop is not empty + if (currentGop.length) { + gops.push(currentGop); + gops.byteLength += currentGop.byteLength; + gops.nalCount += currentGop.nalCount; + gops.duration += currentGop.duration; + } + + currentGop = [currentFrame]; + currentGop.nalCount = currentFrame.length; + currentGop.byteLength = currentFrame.byteLength; + currentGop.pts = currentFrame.pts; + currentGop.dts = currentFrame.dts; + currentGop.duration = currentFrame.duration; + } else { + currentGop.duration += currentFrame.duration; + currentGop.nalCount += currentFrame.length; + currentGop.byteLength += currentFrame.byteLength; + currentGop.push(currentFrame); + } + } + + if (gops.length && currentGop.duration <= 0) { + currentGop.duration = gops[gops.length - 1].duration; + } + gops.byteLength += currentGop.byteLength; + gops.nalCount += currentGop.nalCount; + gops.duration += currentGop.duration; + + // push the final Gop + gops.push(currentGop); + return gops; + }; + + /* + * Search for the first keyframe in the GOPs and throw away all frames + * until that keyframe. Then extend the duration of the pulled keyframe + * and pull the PTS and DTS of the keyframe so that it covers the time + * range of the frames that were disposed. + * + * @param {Array} gops video GOPs + * @returns {Array} modified video GOPs + */ + var extendFirstKeyFrame = function extendFirstKeyFrame(gops) { + var currentGop; + + if (!gops[0][0].keyFrame && gops.length > 1) { + // Remove the first GOP + currentGop = gops.shift(); + + gops.byteLength -= currentGop.byteLength; + gops.nalCount -= currentGop.nalCount; + + // Extend the first frame of what is now the + // first gop to cover the time period of the + // frames we just removed + gops[0][0].dts = currentGop.dts; + gops[0][0].pts = currentGop.pts; + gops[0][0].duration += currentGop.duration; + } + + return gops; + }; + + /** + * Default sample object + * see ISO/IEC 14496-12:2012, section 8.6.4.3 + */ + var createDefaultSample = function createDefaultSample() { + return { + size: 0, + flags: { + isLeading: 0, + dependsOn: 1, + isDependedOn: 0, + hasRedundancy: 0, + degradationPriority: 0, + isNonSyncSample: 1 + } + }; + }; + + /* + * Collates information from a video frame into an object for eventual + * entry into an MP4 sample table. + * + * @param {Object} frame the video frame + * @param {Number} dataOffset the byte offset to position the sample + * @return {Object} object containing sample table info for a frame + */ + var sampleForFrame = function sampleForFrame(frame, dataOffset) { + var sample = createDefaultSample(); + + sample.dataOffset = dataOffset; + sample.compositionTimeOffset = frame.pts - frame.dts; + sample.duration = frame.duration; + sample.size = 4 * frame.length; // Space for nal unit size + sample.size += frame.byteLength; + + if (frame.keyFrame) { + sample.flags.dependsOn = 2; + sample.flags.isNonSyncSample = 0; + } + + return sample; + }; + + // generate the track's sample table from an array of gops + var generateSampleTable = function generateSampleTable(gops, baseDataOffset) { + var h, + i, + sample, + currentGop, + currentFrame, + dataOffset = baseDataOffset || 0, + samples = []; + + for (h = 0; h < gops.length; h++) { + currentGop = gops[h]; + + for (i = 0; i < currentGop.length; i++) { + currentFrame = currentGop[i]; + + sample = sampleForFrame(currentFrame, dataOffset); + + dataOffset += sample.size; + + samples.push(sample); + } + } + return samples; + }; + + // generate the track's raw mdat data from an array of gops + var concatenateNalData = function concatenateNalData(gops) { + var h, + i, + j, + currentGop, + currentFrame, + currentNal, + dataOffset = 0, + nalsByteLength = gops.byteLength, + numberOfNals = gops.nalCount, + totalByteLength = nalsByteLength + 4 * numberOfNals, + data = new Uint8Array(totalByteLength), + view = new DataView(data.buffer); + + // For each Gop.. + for (h = 0; h < gops.length; h++) { + currentGop = gops[h]; + + // For each Frame.. + for (i = 0; i < currentGop.length; i++) { + currentFrame = currentGop[i]; + + // For each NAL.. + for (j = 0; j < currentFrame.length; j++) { + currentNal = currentFrame[j]; + + view.setUint32(dataOffset, currentNal.data.byteLength); + dataOffset += 4; + data.set(currentNal.data, dataOffset); + dataOffset += currentNal.data.byteLength; + } + } + } + return data; + }; + + var frameUtils = { + groupNalsIntoFrames: groupNalsIntoFrames, + groupFramesIntoGops: groupFramesIntoGops, + extendFirstKeyFrame: extendFirstKeyFrame, + generateSampleTable: generateSampleTable, + concatenateNalData: concatenateNalData + }; + + var ONE_SECOND_IN_TS = 90000; // 90kHz clock + + /** + * Store information about the start and end of the track and the + * duration for each frame/sample we process in order to calculate + * the baseMediaDecodeTime + */ + var collectDtsInfo = function collectDtsInfo(track, data) { + if (typeof data.pts === 'number') { + if (track.timelineStartInfo.pts === undefined) { + track.timelineStartInfo.pts = data.pts; + } + + if (track.minSegmentPts === undefined) { + track.minSegmentPts = data.pts; + } else { + track.minSegmentPts = Math.min(track.minSegmentPts, data.pts); + } + + if (track.maxSegmentPts === undefined) { + track.maxSegmentPts = data.pts; + } else { + track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts); + } + } + + if (typeof data.dts === 'number') { + if (track.timelineStartInfo.dts === undefined) { + track.timelineStartInfo.dts = data.dts; + } + + if (track.minSegmentDts === undefined) { + track.minSegmentDts = data.dts; + } else { + track.minSegmentDts = Math.min(track.minSegmentDts, data.dts); + } + + if (track.maxSegmentDts === undefined) { + track.maxSegmentDts = data.dts; + } else { + track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts); + } + } + }; + + /** + * Clear values used to calculate the baseMediaDecodeTime between + * tracks + */ + var clearDtsInfo = function clearDtsInfo(track) { + delete track.minSegmentDts; + delete track.maxSegmentDts; + delete track.minSegmentPts; + delete track.maxSegmentPts; + }; + + /** + * Calculate the track's baseMediaDecodeTime based on the earliest + * DTS the transmuxer has ever seen and the minimum DTS for the + * current track + * @param track {object} track metadata configuration + * @param keepOriginalTimestamps {boolean} If true, keep the timestamps + * in the source; false to adjust the first segment to start at 0. + */ + var calculateTrackBaseMediaDecodeTime = function calculateTrackBaseMediaDecodeTime(track, keepOriginalTimestamps) { + var baseMediaDecodeTime, + scale, + minSegmentDts = track.minSegmentDts; + + // Optionally adjust the time so the first segment starts at zero. + if (!keepOriginalTimestamps) { + minSegmentDts -= track.timelineStartInfo.dts; + } + + // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where + // we want the start of the first segment to be placed + baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; + + // Add to that the distance this segment is from the very first + baseMediaDecodeTime += minSegmentDts; + + // baseMediaDecodeTime must not become negative + baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime); + + if (track.type === 'audio') { + // Audio has a different clock equal to the sampling_rate so we need to + // scale the PTS values into the clock rate of the track + scale = track.samplerate / ONE_SECOND_IN_TS; + baseMediaDecodeTime *= scale; + baseMediaDecodeTime = Math.floor(baseMediaDecodeTime); + } + + return baseMediaDecodeTime; + }; + + var trackDecodeInfo = { + clearDtsInfo: clearDtsInfo, + calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime, + collectDtsInfo: collectDtsInfo + }; + + /** + * mux.js + * + * Copyright (c) 2015 Brightcove + * All rights reserved. + * + * Reads in-band caption information from a video elementary + * stream. Captions must follow the CEA-708 standard for injection + * into an MPEG-2 transport streams. + * @see https://en.wikipedia.org/wiki/CEA-708 + * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf + */ + + // Supplemental enhancement information (SEI) NAL units have a + // payload type field to indicate how they are to be + // interpreted. CEAS-708 caption content is always transmitted with + // payload type 0x04. + + var USER_DATA_REGISTERED_ITU_T_T35 = 4, + RBSP_TRAILING_BITS = 128; + + /** + * Parse a supplemental enhancement information (SEI) NAL unit. + * Stops parsing once a message of type ITU T T35 has been found. + * + * @param bytes {Uint8Array} the bytes of a SEI NAL unit + * @return {object} the parsed SEI payload + * @see Rec. ITU-T H.264, 7.3.2.3.1 + */ + var parseSei = function parseSei(bytes) { + var i = 0, + result = { + payloadType: -1, + payloadSize: 0 + }, + payloadType = 0, + payloadSize = 0; + + // go through the sei_rbsp parsing each each individual sei_message + while (i < bytes.byteLength) { + // stop once we have hit the end of the sei_rbsp + if (bytes[i] === RBSP_TRAILING_BITS) { + break; + } + + // Parse payload type + while (bytes[i] === 0xFF) { + payloadType += 255; + i++; + } + payloadType += bytes[i++]; + + // Parse payload size + while (bytes[i] === 0xFF) { + payloadSize += 255; + i++; + } + payloadSize += bytes[i++]; + + // this sei_message is a 608/708 caption so save it and break + // there can only ever be one caption message in a frame's sei + if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) { + result.payloadType = payloadType; + result.payloadSize = payloadSize; + result.payload = bytes.subarray(i, i + payloadSize); + break; + } + + // skip the payload and parse the next message + i += payloadSize; + payloadType = 0; + payloadSize = 0; + } + + return result; + }; + + // see ANSI/SCTE 128-1 (2013), section 8.1 + var parseUserData = function parseUserData(sei) { + // itu_t_t35_contry_code must be 181 (United States) for + // captions + if (sei.payload[0] !== 181) { + return null; + } + + // itu_t_t35_provider_code should be 49 (ATSC) for captions + if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) { + return null; + } + + // the user_identifier should be "GA94" to indicate ATSC1 data + if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') { + return null; + } + + // finally, user_data_type_code should be 0x03 for caption data + if (sei.payload[7] !== 0x03) { + return null; + } + + // return the user_data_type_structure and strip the trailing + // marker bits + return sei.payload.subarray(8, sei.payload.length - 1); + }; + + // see CEA-708-D, section 4.4 + var parseCaptionPackets = function parseCaptionPackets(pts, userData) { + var results = [], + i, + count, + offset, + data; + + // if this is just filler, return immediately + if (!(userData[0] & 0x40)) { + return results; + } + + // parse out the cc_data_1 and cc_data_2 fields + count = userData[0] & 0x1f; + for (i = 0; i < count; i++) { + offset = i * 3; + data = { + type: userData[offset + 2] & 0x03, + pts: pts + }; + + // capture cc data when cc_valid is 1 + if (userData[offset + 2] & 0x04) { + data.ccData = userData[offset + 3] << 8 | userData[offset + 4]; + results.push(data); + } + } + return results; + }; + + var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) { + var length = data.byteLength, + emulationPreventionBytesPositions = [], + i = 1, + newLength, + newData; + + // Find all `Emulation Prevention Bytes` + while (i < length - 2) { + if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) { + emulationPreventionBytesPositions.push(i + 2); + i += 2; + } else { + i++; + } + } + + // If no Emulation Prevention Bytes were found just return the original + // array + if (emulationPreventionBytesPositions.length === 0) { + return data; + } + + // Create a new array to hold the NAL unit data + newLength = length - emulationPreventionBytesPositions.length; + newData = new Uint8Array(newLength); + var sourceIndex = 0; + + for (i = 0; i < newLength; sourceIndex++, i++) { + if (sourceIndex === emulationPreventionBytesPositions[0]) { + // Skip this byte + sourceIndex++; + // Remove this position index + emulationPreventionBytesPositions.shift(); + } + newData[i] = data[sourceIndex]; + } + + return newData; + }; + + // exports + var captionPacketParser = { + parseSei: parseSei, + parseUserData: parseUserData, + parseCaptionPackets: parseCaptionPackets, + discardEmulationPreventionBytes: discardEmulationPreventionBytes, + USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35 + }; + + // ----------------- + // Link To Transport + // ----------------- + + + var CaptionStream = function CaptionStream() { + + CaptionStream.prototype.init.call(this); + + this.captionPackets_ = []; + + this.ccStreams_ = [new Cea608Stream(0, 0), // eslint-disable-line no-use-before-define + new Cea608Stream(0, 1), // eslint-disable-line no-use-before-define + new Cea608Stream(1, 0), // eslint-disable-line no-use-before-define + new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define + ]; + + this.reset(); + + // forward data and done events from CCs to this CaptionStream + this.ccStreams_.forEach(function (cc) { + cc.on('data', this.trigger.bind(this, 'data')); + cc.on('done', this.trigger.bind(this, 'done')); + }, this); + }; + + CaptionStream.prototype = new stream(); + CaptionStream.prototype.push = function (event) { + var sei, userData, newCaptionPackets; + + // only examine SEI NALs + if (event.nalUnitType !== 'sei_rbsp') { + return; + } + + // parse the sei + sei = captionPacketParser.parseSei(event.escapedRBSP); + + // ignore everything but user_data_registered_itu_t_t35 + if (sei.payloadType !== captionPacketParser.USER_DATA_REGISTERED_ITU_T_T35) { + return; + } + + // parse out the user data payload + userData = captionPacketParser.parseUserData(sei); + + // ignore unrecognized userData + if (!userData) { + return; + } + + // Sometimes, the same segment # will be downloaded twice. To stop the + // caption data from being processed twice, we track the latest dts we've + // received and ignore everything with a dts before that. However, since + // data for a specific dts can be split across packets on either side of + // a segment boundary, we need to make sure we *don't* ignore the packets + // from the *next* segment that have dts === this.latestDts_. By constantly + // tracking the number of packets received with dts === this.latestDts_, we + // know how many should be ignored once we start receiving duplicates. + if (event.dts < this.latestDts_) { + // We've started getting older data, so set the flag. + this.ignoreNextEqualDts_ = true; + return; + } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) { + this.numSameDts_--; + if (!this.numSameDts_) { + // We've received the last duplicate packet, time to start processing again + this.ignoreNextEqualDts_ = false; + } + return; + } + + // parse out CC data packets and save them for later + newCaptionPackets = captionPacketParser.parseCaptionPackets(event.pts, userData); + this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets); + if (this.latestDts_ !== event.dts) { + this.numSameDts_ = 0; + } + this.numSameDts_++; + this.latestDts_ = event.dts; + }; + + CaptionStream.prototype.flush = function () { + // make sure we actually parsed captions before proceeding + if (!this.captionPackets_.length) { + this.ccStreams_.forEach(function (cc) { + cc.flush(); + }, this); + return; + } + + // In Chrome, the Array#sort function is not stable so add a + // presortIndex that we can use to ensure we get a stable-sort + this.captionPackets_.forEach(function (elem, idx) { + elem.presortIndex = idx; + }); + + // sort caption byte-pairs based on their PTS values + this.captionPackets_.sort(function (a, b) { + if (a.pts === b.pts) { + return a.presortIndex - b.presortIndex; + } + return a.pts - b.pts; + }); + + this.captionPackets_.forEach(function (packet) { + if (packet.type < 2) { + // Dispatch packet to the right Cea608Stream + this.dispatchCea608Packet(packet); + } + // this is where an 'else' would go for a dispatching packets + // to a theoretical Cea708Stream that handles SERVICEn data + }, this); + + this.captionPackets_.length = 0; + this.ccStreams_.forEach(function (cc) { + cc.flush(); + }, this); + return; + }; + + CaptionStream.prototype.reset = function () { + this.latestDts_ = null; + this.ignoreNextEqualDts_ = false; + this.numSameDts_ = 0; + this.activeCea608Channel_ = [null, null]; + this.ccStreams_.forEach(function (ccStream) { + ccStream.reset(); + }); + }; + + CaptionStream.prototype.dispatchCea608Packet = function (packet) { + // NOTE: packet.type is the CEA608 field + if (this.setsChannel1Active(packet)) { + this.activeCea608Channel_[packet.type] = 0; + } else if (this.setsChannel2Active(packet)) { + this.activeCea608Channel_[packet.type] = 1; + } + if (this.activeCea608Channel_[packet.type] === null) { + // If we haven't received anything to set the active channel, discard the + // data; we don't want jumbled captions + return; + } + this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet); + }; + + CaptionStream.prototype.setsChannel1Active = function (packet) { + return (packet.ccData & 0x7800) === 0x1000; + }; + CaptionStream.prototype.setsChannel2Active = function (packet) { + return (packet.ccData & 0x7800) === 0x1800; + }; + + // ---------------------- + // Session to Application + // ---------------------- + + // This hash maps non-ASCII, special, and extended character codes to their + // proper Unicode equivalent. The first keys that are only a single byte + // are the non-standard ASCII characters, which simply map the CEA608 byte + // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608 + // character codes, but have their MSB bitmasked with 0x03 so that a lookup + // can be performed regardless of the field and data channel on which the + // character code was received. + var CHARACTER_TRANSLATION = { + 0x2a: 0xe1, // á + 0x5c: 0xe9, // é + 0x5e: 0xed, // í + 0x5f: 0xf3, // ó + 0x60: 0xfa, // ú + 0x7b: 0xe7, // ç + 0x7c: 0xf7, // ÷ + 0x7d: 0xd1, // Ñ + 0x7e: 0xf1, // ñ + 0x7f: 0x2588, // █ + 0x0130: 0xae, // ® + 0x0131: 0xb0, // ° + 0x0132: 0xbd, // ½ + 0x0133: 0xbf, // ¿ + 0x0134: 0x2122, // ™ + 0x0135: 0xa2, // ¢ + 0x0136: 0xa3, // £ + 0x0137: 0x266a, // ♪ + 0x0138: 0xe0, // à + 0x0139: 0xa0, // + 0x013a: 0xe8, // è + 0x013b: 0xe2, // â + 0x013c: 0xea, // ê + 0x013d: 0xee, // î + 0x013e: 0xf4, // ô + 0x013f: 0xfb, // û + 0x0220: 0xc1, // Á + 0x0221: 0xc9, // É + 0x0222: 0xd3, // Ó + 0x0223: 0xda, // Ú + 0x0224: 0xdc, // Ü + 0x0225: 0xfc, // ü + 0x0226: 0x2018, // ‘ + 0x0227: 0xa1, // ¡ + 0x0228: 0x2a, // * + 0x0229: 0x27, // ' + 0x022a: 0x2014, // — + 0x022b: 0xa9, // © + 0x022c: 0x2120, // ℠ + 0x022d: 0x2022, // • + 0x022e: 0x201c, // “ + 0x022f: 0x201d, // ” + 0x0230: 0xc0, // À + 0x0231: 0xc2, // Â + 0x0232: 0xc7, // Ç + 0x0233: 0xc8, // È + 0x0234: 0xca, // Ê + 0x0235: 0xcb, // Ë + 0x0236: 0xeb, // ë + 0x0237: 0xce, // Î + 0x0238: 0xcf, // Ï + 0x0239: 0xef, // ï + 0x023a: 0xd4, // Ô + 0x023b: 0xd9, // Ù + 0x023c: 0xf9, // ù + 0x023d: 0xdb, // Û + 0x023e: 0xab, // « + 0x023f: 0xbb, // » + 0x0320: 0xc3, // Ã + 0x0321: 0xe3, // ã + 0x0322: 0xcd, // Í + 0x0323: 0xcc, // Ì + 0x0324: 0xec, // ì + 0x0325: 0xd2, // Ò + 0x0326: 0xf2, // ò + 0x0327: 0xd5, // Õ + 0x0328: 0xf5, // õ + 0x0329: 0x7b, // { + 0x032a: 0x7d, // } + 0x032b: 0x5c, // \ + 0x032c: 0x5e, // ^ + 0x032d: 0x5f, // _ + 0x032e: 0x7c, // | + 0x032f: 0x7e, // ~ + 0x0330: 0xc4, // Ä + 0x0331: 0xe4, // ä + 0x0332: 0xd6, // Ö + 0x0333: 0xf6, // ö + 0x0334: 0xdf, // ß + 0x0335: 0xa5, // ¥ + 0x0336: 0xa4, // ¤ + 0x0337: 0x2502, // │ + 0x0338: 0xc5, // Å + 0x0339: 0xe5, // å + 0x033a: 0xd8, // Ø + 0x033b: 0xf8, // ø + 0x033c: 0x250c, // ┌ + 0x033d: 0x2510, // ┐ + 0x033e: 0x2514, // └ + 0x033f: 0x2518 // ┘ + }; + + var getCharFromCode = function getCharFromCode(code) { + if (code === null) { + return ''; + } + code = CHARACTER_TRANSLATION[code] || code; + return String.fromCharCode(code); + }; + + // the index of the last row in a CEA-608 display buffer + var BOTTOM_ROW = 14; + + // This array is used for mapping PACs -> row #, since there's no way of + // getting it through bit logic. + var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; + + // CEA-608 captions are rendered onto a 34x15 matrix of character + // cells. The "bottom" row is the last element in the outer array. + var createDisplayBuffer = function createDisplayBuffer() { + var result = [], + i = BOTTOM_ROW + 1; + while (i--) { + result.push(''); + } + return result; + }; + + var Cea608Stream = function Cea608Stream(field, dataChannel) { + Cea608Stream.prototype.init.call(this); + + this.field_ = field || 0; + this.dataChannel_ = dataChannel || 0; + + this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1); + + this.setConstants(); + this.reset(); + + this.push = function (packet) { + var data, swap, char0, char1, text; + // remove the parity bits + data = packet.ccData & 0x7f7f; + + // ignore duplicate control codes; the spec demands they're sent twice + if (data === this.lastControlCode_) { + this.lastControlCode_ = null; + return; + } + + // Store control codes + if ((data & 0xf000) === 0x1000) { + this.lastControlCode_ = data; + } else if (data !== this.PADDING_) { + this.lastControlCode_ = null; + } + + char0 = data >>> 8; + char1 = data & 0xff; + + if (data === this.PADDING_) { + return; + } else if (data === this.RESUME_CAPTION_LOADING_) { + this.mode_ = 'popOn'; + } else if (data === this.END_OF_CAPTION_) { + // If an EOC is received while in paint-on mode, the displayed caption + // text should be swapped to non-displayed memory as if it was a pop-on + // caption. Because of that, we should explicitly switch back to pop-on + // mode + this.mode_ = 'popOn'; + this.clearFormatting(packet.pts); + // if a caption was being displayed, it's gone now + this.flushDisplayed(packet.pts); + + // flip memory + swap = this.displayed_; + this.displayed_ = this.nonDisplayed_; + this.nonDisplayed_ = swap; + + // start measuring the time to display the caption + this.startPts_ = packet.pts; + } else if (data === this.ROLL_UP_2_ROWS_) { + this.rollUpRows_ = 2; + this.setRollUp(packet.pts); + } else if (data === this.ROLL_UP_3_ROWS_) { + this.rollUpRows_ = 3; + this.setRollUp(packet.pts); + } else if (data === this.ROLL_UP_4_ROWS_) { + this.rollUpRows_ = 4; + this.setRollUp(packet.pts); + } else if (data === this.CARRIAGE_RETURN_) { + this.clearFormatting(packet.pts); + this.flushDisplayed(packet.pts); + this.shiftRowsUp_(); + this.startPts_ = packet.pts; + } else if (data === this.BACKSPACE_) { + if (this.mode_ === 'popOn') { + this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1); + } else { + this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1); + } + } else if (data === this.ERASE_DISPLAYED_MEMORY_) { + this.flushDisplayed(packet.pts); + this.displayed_ = createDisplayBuffer(); + } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) { + this.nonDisplayed_ = createDisplayBuffer(); + } else if (data === this.RESUME_DIRECT_CAPTIONING_) { + if (this.mode_ !== 'paintOn') { + // NOTE: This should be removed when proper caption positioning is + // implemented + this.flushDisplayed(packet.pts); + this.displayed_ = createDisplayBuffer(); + } + this.mode_ = 'paintOn'; + this.startPts_ = packet.pts; + + // Append special characters to caption text + } else if (this.isSpecialCharacter(char0, char1)) { + // Bitmask char0 so that we can apply character transformations + // regardless of field and data channel. + // Then byte-shift to the left and OR with char1 so we can pass the + // entire character code to `getCharFromCode`. + char0 = (char0 & 0x03) << 8; + text = getCharFromCode(char0 | char1); + this[this.mode_](packet.pts, text); + this.column_++; + + // Append extended characters to caption text + } else if (this.isExtCharacter(char0, char1)) { + // Extended characters always follow their "non-extended" equivalents. + // IE if a "è" is desired, you'll always receive "eè"; non-compliant + // decoders are supposed to drop the "è", while compliant decoders + // backspace the "e" and insert "è". + + // Delete the previous character + if (this.mode_ === 'popOn') { + this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1); + } else { + this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1); + } + + // Bitmask char0 so that we can apply character transformations + // regardless of field and data channel. + // Then byte-shift to the left and OR with char1 so we can pass the + // entire character code to `getCharFromCode`. + char0 = (char0 & 0x03) << 8; + text = getCharFromCode(char0 | char1); + this[this.mode_](packet.pts, text); + this.column_++; + + // Process mid-row codes + } else if (this.isMidRowCode(char0, char1)) { + // Attributes are not additive, so clear all formatting + this.clearFormatting(packet.pts); + + // According to the standard, mid-row codes + // should be replaced with spaces, so add one now + this[this.mode_](packet.pts, ' '); + this.column_++; + + if ((char1 & 0xe) === 0xe) { + this.addFormatting(packet.pts, ['i']); + } + + if ((char1 & 0x1) === 0x1) { + this.addFormatting(packet.pts, ['u']); + } + + // Detect offset control codes and adjust cursor + } else if (this.isOffsetControlCode(char0, char1)) { + // Cursor position is set by indent PAC (see below) in 4-column + // increments, with an additional offset code of 1-3 to reach any + // of the 32 columns specified by CEA-608. So all we need to do + // here is increment the column cursor by the given offset. + this.column_ += char1 & 0x03; + + // Detect PACs (Preamble Address Codes) + } else if (this.isPAC(char0, char1)) { + + // There's no logic for PAC -> row mapping, so we have to just + // find the row code in an array and use its index :( + var row = ROWS.indexOf(data & 0x1f20); + + // Configure the caption window if we're in roll-up mode + if (this.mode_ === 'rollUp') { + this.setRollUp(packet.pts, row); + } + + if (row !== this.row_) { + // formatting is only persistent for current row + this.clearFormatting(packet.pts); + this.row_ = row; + } + // All PACs can apply underline, so detect and apply + // (All odd-numbered second bytes set underline) + if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) { + this.addFormatting(packet.pts, ['u']); + } + + if ((data & 0x10) === 0x10) { + // We've got an indent level code. Each successive even number + // increments the column cursor by 4, so we can get the desired + // column position by bit-shifting to the right (to get n/2) + // and multiplying by 4. + this.column_ = ((data & 0xe) >> 1) * 4; + } + + if (this.isColorPAC(char1)) { + // it's a color code, though we only support white, which + // can be either normal or italicized. white italics can be + // either 0x4e or 0x6e depending on the row, so we just + // bitwise-and with 0xe to see if italics should be turned on + if ((char1 & 0xe) === 0xe) { + this.addFormatting(packet.pts, ['i']); + } + } + + // We have a normal character in char0, and possibly one in char1 + } else if (this.isNormalChar(char0)) { + if (char1 === 0x00) { + char1 = null; + } + text = getCharFromCode(char0); + text += getCharFromCode(char1); + this[this.mode_](packet.pts, text); + this.column_ += text.length; + } // finish data processing + }; + }; + Cea608Stream.prototype = new stream(); + // Trigger a cue point that captures the current state of the + // display buffer + Cea608Stream.prototype.flushDisplayed = function (pts) { + var content = this.displayed_ + // remove spaces from the start and end of the string + .map(function (row) { + return row.trim(); + }) + // combine all text rows to display in one cue + .join('\n') + // and remove blank rows from the start and end, but not the middle + .replace(/^\n+|\n+$/g, ''); + + if (content.length) { + this.trigger('data', { + startPts: this.startPts_, + endPts: pts, + text: content, + stream: this.name_ + }); + } + }; + + /** + * Zero out the data, used for startup and on seek + */ + Cea608Stream.prototype.reset = function () { + this.mode_ = 'popOn'; + // When in roll-up mode, the index of the last row that will + // actually display captions. If a caption is shifted to a row + // with a lower index than this, it is cleared from the display + // buffer + this.topRow_ = 0; + this.startPts_ = 0; + this.displayed_ = createDisplayBuffer(); + this.nonDisplayed_ = createDisplayBuffer(); + this.lastControlCode_ = null; + + // Track row and column for proper line-breaking and spacing + this.column_ = 0; + this.row_ = BOTTOM_ROW; + this.rollUpRows_ = 2; + + // This variable holds currently-applied formatting + this.formatting_ = []; + }; + + /** + * Sets up control code and related constants for this instance + */ + Cea608Stream.prototype.setConstants = function () { + // The following attributes have these uses: + // ext_ : char0 for mid-row codes, and the base for extended + // chars (ext_+0, ext_+1, and ext_+2 are char0s for + // extended codes) + // control_: char0 for control codes, except byte-shifted to the + // left so that we can do this.control_ | CONTROL_CODE + // offset_: char0 for tab offset codes + // + // It's also worth noting that control codes, and _only_ control codes, + // differ between field 1 and field2. Field 2 control codes are always + // their field 1 value plus 1. That's why there's the "| field" on the + // control value. + if (this.dataChannel_ === 0) { + this.BASE_ = 0x10; + this.EXT_ = 0x11; + this.CONTROL_ = (0x14 | this.field_) << 8; + this.OFFSET_ = 0x17; + } else if (this.dataChannel_ === 1) { + this.BASE_ = 0x18; + this.EXT_ = 0x19; + this.CONTROL_ = (0x1c | this.field_) << 8; + this.OFFSET_ = 0x1f; + } + + // Constants for the LSByte command codes recognized by Cea608Stream. This + // list is not exhaustive. For a more comprehensive listing and semantics see + // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf + // Padding + this.PADDING_ = 0x0000; + // Pop-on Mode + this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20; + this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; + // Roll-up Mode + this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25; + this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26; + this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27; + this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; + // paint-on mode + this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; + // Erasure + this.BACKSPACE_ = this.CONTROL_ | 0x21; + this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c; + this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e; + }; + + /** + * Detects if the 2-byte packet data is a special character + * + * Special characters have a second byte in the range 0x30 to 0x3f, + * with the first byte being 0x11 (for data channel 1) or 0x19 (for + * data channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are an special character + */ + Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) { + return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f; + }; + + /** + * Detects if the 2-byte packet data is an extended character + * + * Extended characters have a second byte in the range 0x20 to 0x3f, + * with the first byte being 0x12 or 0x13 (for data channel 1) or + * 0x1a or 0x1b (for data channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are an extended character + */ + Cea608Stream.prototype.isExtCharacter = function (char0, char1) { + return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f; + }; + + /** + * Detects if the 2-byte packet is a mid-row code + * + * Mid-row codes have a second byte in the range 0x20 to 0x2f, with + * the first byte being 0x11 (for data channel 1) or 0x19 (for data + * channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are a mid-row code + */ + Cea608Stream.prototype.isMidRowCode = function (char0, char1) { + return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f; + }; + + /** + * Detects if the 2-byte packet is an offset control code + * + * Offset control codes have a second byte in the range 0x21 to 0x23, + * with the first byte being 0x17 (for data channel 1) or 0x1f (for + * data channel 2). + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are an offset control code + */ + Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) { + return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23; + }; + + /** + * Detects if the 2-byte packet is a Preamble Address Code + * + * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1) + * or 0x18 to 0x1f (for data channel 2), with the second byte in the + * range 0x40 to 0x7f. + * + * @param {Integer} char0 The first byte + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the 2 bytes are a PAC + */ + Cea608Stream.prototype.isPAC = function (char0, char1) { + return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f; + }; + + /** + * Detects if a packet's second byte is in the range of a PAC color code + * + * PAC color codes have the second byte be in the range 0x40 to 0x4f, or + * 0x60 to 0x6f. + * + * @param {Integer} char1 The second byte + * @return {Boolean} Whether the byte is a color PAC + */ + Cea608Stream.prototype.isColorPAC = function (char1) { + return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f; + }; + + /** + * Detects if a single byte is in the range of a normal character + * + * Normal text bytes are in the range 0x20 to 0x7f. + * + * @param {Integer} char The byte + * @return {Boolean} Whether the byte is a normal character + */ + Cea608Stream.prototype.isNormalChar = function (char) { + return char >= 0x20 && char <= 0x7f; + }; + + /** + * Configures roll-up + * + * @param {Integer} pts Current PTS + * @param {Integer} newBaseRow Used by PACs to slide the current window to + * a new position + */ + Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) { + // Reset the base row to the bottom row when switching modes + if (this.mode_ !== 'rollUp') { + this.row_ = BOTTOM_ROW; + this.mode_ = 'rollUp'; + // Spec says to wipe memories when switching to roll-up + this.flushDisplayed(pts); + this.nonDisplayed_ = createDisplayBuffer(); + this.displayed_ = createDisplayBuffer(); + } + + if (newBaseRow !== undefined && newBaseRow !== this.row_) { + // move currently displayed captions (up or down) to the new base row + for (var i = 0; i < this.rollUpRows_; i++) { + this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i]; + this.displayed_[this.row_ - i] = ''; + } + } + + if (newBaseRow === undefined) { + newBaseRow = this.row_; + } + this.topRow_ = newBaseRow - this.rollUpRows_ + 1; + }; + + // Adds the opening HTML tag for the passed character to the caption text, + // and keeps track of it for later closing + Cea608Stream.prototype.addFormatting = function (pts, format) { + this.formatting_ = this.formatting_.concat(format); + var text = format.reduce(function (text, format) { + return text + '<' + format + '>'; + }, ''); + this[this.mode_](pts, text); + }; + + // Adds HTML closing tags for current formatting to caption text and + // clears remembered formatting + Cea608Stream.prototype.clearFormatting = function (pts) { + if (!this.formatting_.length) { + return; + } + var text = this.formatting_.reverse().reduce(function (text, format) { + return text + '</' + format + '>'; + }, ''); + this.formatting_ = []; + this[this.mode_](pts, text); + }; + + // Mode Implementations + Cea608Stream.prototype.popOn = function (pts, text) { + var baseRow = this.nonDisplayed_[this.row_]; + + // buffer characters + baseRow += text; + this.nonDisplayed_[this.row_] = baseRow; + }; + + Cea608Stream.prototype.rollUp = function (pts, text) { + var baseRow = this.displayed_[this.row_]; + + baseRow += text; + this.displayed_[this.row_] = baseRow; + }; + + Cea608Stream.prototype.shiftRowsUp_ = function () { + var i; + // clear out inactive rows + for (i = 0; i < this.topRow_; i++) { + this.displayed_[i] = ''; + } + for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) { + this.displayed_[i] = ''; + } + // shift displayed rows up + for (i = this.topRow_; i < this.row_; i++) { + this.displayed_[i] = this.displayed_[i + 1]; + } + // clear out the bottom row + this.displayed_[this.row_] = ''; + }; + + Cea608Stream.prototype.paintOn = function (pts, text) { + var baseRow = this.displayed_[this.row_]; + + baseRow += text; + this.displayed_[this.row_] = baseRow; + }; + + // exports + var captionStream = { + CaptionStream: CaptionStream, + Cea608Stream: Cea608Stream + }; + + var streamTypes = { + H264_STREAM_TYPE: 0x1B, + ADTS_STREAM_TYPE: 0x0F, + METADATA_STREAM_TYPE: 0x15 + }; + + var MAX_TS = 8589934592; + + var RO_THRESH = 4294967296; + + var handleRollover = function handleRollover(value, reference) { + var direction = 1; + + if (value > reference) { + // If the current timestamp value is greater than our reference timestamp and we detect a + // timestamp rollover, this means the roll over is happening in the opposite direction. + // Example scenario: Enter a long stream/video just after a rollover occurred. The reference + // point will be set to a small number, e.g. 1. The user then seeks backwards over the + // rollover point. In loading this segment, the timestamp values will be very large, + // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust + // the time stamp to be `value - 2^33`. + direction = -1; + } + + // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will + // cause an incorrect adjustment. + while (Math.abs(reference - value) > RO_THRESH) { + value += direction * MAX_TS; + } + + return value; + }; + + var TimestampRolloverStream = function TimestampRolloverStream(type) { + var lastDTS, referenceDTS; + + TimestampRolloverStream.prototype.init.call(this); + + this.type_ = type; + + this.push = function (data) { + if (data.type !== this.type_) { + return; + } + + if (referenceDTS === undefined) { + referenceDTS = data.dts; + } + + data.dts = handleRollover(data.dts, referenceDTS); + data.pts = handleRollover(data.pts, referenceDTS); + + lastDTS = data.dts; + + this.trigger('data', data); + }; + + this.flush = function () { + referenceDTS = lastDTS; + this.trigger('done'); + }; + + this.discontinuity = function () { + referenceDTS = void 0; + lastDTS = void 0; + }; + }; + + TimestampRolloverStream.prototype = new stream(); + + var timestampRolloverStream = { + TimestampRolloverStream: TimestampRolloverStream, + handleRollover: handleRollover + }; + + var percentEncode = function percentEncode(bytes, start, end) { + var i, + result = ''; + for (i = start; i < end; i++) { + result += '%' + ('00' + bytes[i].toString(16)).slice(-2); + } + return result; + }, + + + // return the string representation of the specified byte range, + // interpreted as UTf-8. + parseUtf8 = function parseUtf8(bytes, start, end) { + return decodeURIComponent(percentEncode(bytes, start, end)); + }, + + + // return the string representation of the specified byte range, + // interpreted as ISO-8859-1. + parseIso88591 = function parseIso88591(bytes, start, end) { + return unescape(percentEncode(bytes, start, end)); // jshint ignore:line + }, + parseSyncSafeInteger = function parseSyncSafeInteger(data) { + return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3]; + }, + tagParsers = { + TXXX: function TXXX(tag) { + var i; + if (tag.data[0] !== 3) { + // ignore frames with unrecognized character encodings + return; + } + + for (i = 1; i < tag.data.length; i++) { + if (tag.data[i] === 0) { + // parse the text fields + tag.description = parseUtf8(tag.data, 1, i); + // do not include the null terminator in the tag value + tag.value = parseUtf8(tag.data, i + 1, tag.data.length).replace(/\0*$/, ''); + break; + } + } + tag.data = tag.value; + }, + WXXX: function WXXX(tag) { + var i; + if (tag.data[0] !== 3) { + // ignore frames with unrecognized character encodings + return; + } + + for (i = 1; i < tag.data.length; i++) { + if (tag.data[i] === 0) { + // parse the description and URL fields + tag.description = parseUtf8(tag.data, 1, i); + tag.url = parseUtf8(tag.data, i + 1, tag.data.length); + break; + } + } + }, + PRIV: function PRIV(tag) { + var i; + + for (i = 0; i < tag.data.length; i++) { + if (tag.data[i] === 0) { + // parse the description and URL fields + tag.owner = parseIso88591(tag.data, 0, i); + break; + } + } + tag.privateData = tag.data.subarray(i + 1); + tag.data = tag.privateData; + } + }, + _MetadataStream; + + _MetadataStream = function MetadataStream(options) { + var settings = { + debug: !!(options && options.debug), + + // the bytes of the program-level descriptor field in MP2T + // see ISO/IEC 13818-1:2013 (E), section 2.6 "Program and + // program element descriptors" + descriptor: options && options.descriptor + }, + + + // the total size in bytes of the ID3 tag being parsed + tagSize = 0, + + + // tag data that is not complete enough to be parsed + buffer = [], + + + // the total number of bytes currently in the buffer + bufferSize = 0, + i; + + _MetadataStream.prototype.init.call(this); + + // calculate the text track in-band metadata track dispatch type + // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track + this.dispatchType = streamTypes.METADATA_STREAM_TYPE.toString(16); + if (settings.descriptor) { + for (i = 0; i < settings.descriptor.length; i++) { + this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2); + } + } + + this.push = function (chunk) { + var tag, frameStart, frameSize, frame, i, frameHeader; + if (chunk.type !== 'timed-metadata') { + return; + } + + // if data_alignment_indicator is set in the PES header, + // we must have the start of a new ID3 tag. Assume anything + // remaining in the buffer was malformed and throw it out + if (chunk.dataAlignmentIndicator) { + bufferSize = 0; + buffer.length = 0; + } + + // ignore events that don't look like ID3 data + if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) { + if (settings.debug) { + // eslint-disable-next-line no-console + console.log('Skipping unrecognized metadata packet'); + } + return; + } + + // add this chunk to the data we've collected so far + + buffer.push(chunk); + bufferSize += chunk.data.byteLength; + + // grab the size of the entire frame from the ID3 header + if (buffer.length === 1) { + // the frame size is transmitted as a 28-bit integer in the + // last four bytes of the ID3 header. + // The most significant bit of each byte is dropped and the + // results concatenated to recover the actual value. + tagSize = parseSyncSafeInteger(chunk.data.subarray(6, 10)); + + // ID3 reports the tag size excluding the header but it's more + // convenient for our comparisons to include it + tagSize += 10; + } + + // if the entire frame has not arrived, wait for more data + if (bufferSize < tagSize) { + return; + } + + // collect the entire frame so it can be parsed + tag = { + data: new Uint8Array(tagSize), + frames: [], + pts: buffer[0].pts, + dts: buffer[0].dts + }; + for (i = 0; i < tagSize;) { + tag.data.set(buffer[0].data.subarray(0, tagSize - i), i); + i += buffer[0].data.byteLength; + bufferSize -= buffer[0].data.byteLength; + buffer.shift(); + } + + // find the start of the first frame and the end of the tag + frameStart = 10; + if (tag.data[5] & 0x40) { + // advance the frame start past the extended header + frameStart += 4; // header size field + frameStart += parseSyncSafeInteger(tag.data.subarray(10, 14)); + + // clip any padding off the end + tagSize -= parseSyncSafeInteger(tag.data.subarray(16, 20)); + } + + // parse one or more ID3 frames + // http://id3.org/id3v2.3.0#ID3v2_frame_overview + do { + // determine the number of bytes in this frame + frameSize = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8)); + if (frameSize < 1) { + // eslint-disable-next-line no-console + return console.log('Malformed ID3 frame encountered. Skipping metadata parsing.'); + } + frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]); + + frame = { + id: frameHeader, + data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10) + }; + frame.key = frame.id; + if (tagParsers[frame.id]) { + tagParsers[frame.id](frame); + + // handle the special PRIV frame used to indicate the start + // time for raw AAC data + if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') { + var d = frame.data, + size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2; + + size *= 4; + size += d[7] & 0x03; + frame.timeStamp = size; + // in raw AAC, all subsequent data will be timestamped based + // on the value of this frame + // we couldn't have known the appropriate pts and dts before + // parsing this ID3 tag so set those values now + if (tag.pts === undefined && tag.dts === undefined) { + tag.pts = frame.timeStamp; + tag.dts = frame.timeStamp; + } + this.trigger('timestamp', frame); + } + } + tag.frames.push(frame); + + frameStart += 10; // advance past the frame header + frameStart += frameSize; // advance past the frame body + } while (frameStart < tagSize); + this.trigger('data', tag); + }; + }; + _MetadataStream.prototype = new stream(); + + var metadataStream = _MetadataStream; + + var TimestampRolloverStream$1 = timestampRolloverStream.TimestampRolloverStream; + + // object types + var _TransportPacketStream, _TransportParseStream, _ElementaryStream; + + // constants + var MP2T_PACKET_LENGTH = 188, + + + // bytes + SYNC_BYTE = 0x47; + + /** + * Splits an incoming stream of binary data into MPEG-2 Transport + * Stream packets. + */ + _TransportPacketStream = function TransportPacketStream() { + var buffer = new Uint8Array(MP2T_PACKET_LENGTH), + bytesInBuffer = 0; + + _TransportPacketStream.prototype.init.call(this); + + // Deliver new bytes to the stream. + + /** + * Split a stream of data into M2TS packets + **/ + this.push = function (bytes) { + var startIndex = 0, + endIndex = MP2T_PACKET_LENGTH, + everything; + + // If there are bytes remaining from the last segment, prepend them to the + // bytes that were pushed in + if (bytesInBuffer) { + everything = new Uint8Array(bytes.byteLength + bytesInBuffer); + everything.set(buffer.subarray(0, bytesInBuffer)); + everything.set(bytes, bytesInBuffer); + bytesInBuffer = 0; + } else { + everything = bytes; + } + + // While we have enough data for a packet + while (endIndex < everything.byteLength) { + // Look for a pair of start and end sync bytes in the data.. + if (everything[startIndex] === SYNC_BYTE && everything[endIndex] === SYNC_BYTE) { + // We found a packet so emit it and jump one whole packet forward in + // the stream + this.trigger('data', everything.subarray(startIndex, endIndex)); + startIndex += MP2T_PACKET_LENGTH; + endIndex += MP2T_PACKET_LENGTH; + continue; + } + // If we get here, we have somehow become de-synchronized and we need to step + // forward one byte at a time until we find a pair of sync bytes that denote + // a packet + startIndex++; + endIndex++; + } + + // If there was some data left over at the end of the segment that couldn't + // possibly be a whole packet, keep it because it might be the start of a packet + // that continues in the next segment + if (startIndex < everything.byteLength) { + buffer.set(everything.subarray(startIndex), 0); + bytesInBuffer = everything.byteLength - startIndex; + } + }; + + /** + * Passes identified M2TS packets to the TransportParseStream to be parsed + **/ + this.flush = function () { + // If the buffer contains a whole packet when we are being flushed, emit it + // and empty the buffer. Otherwise hold onto the data because it may be + // important for decoding the next segment + if (bytesInBuffer === MP2T_PACKET_LENGTH && buffer[0] === SYNC_BYTE) { + this.trigger('data', buffer); + bytesInBuffer = 0; + } + this.trigger('done'); + }; + }; + _TransportPacketStream.prototype = new stream(); + + /** + * Accepts an MP2T TransportPacketStream and emits data events with parsed + * forms of the individual transport stream packets. + */ + _TransportParseStream = function TransportParseStream() { + var parsePsi, parsePat, parsePmt, self; + _TransportParseStream.prototype.init.call(this); + self = this; + + this.packetsWaitingForPmt = []; + this.programMapTable = undefined; + + parsePsi = function parsePsi(payload, psi) { + var offset = 0; + + // PSI packets may be split into multiple sections and those + // sections may be split into multiple packets. If a PSI + // section starts in this packet, the payload_unit_start_indicator + // will be true and the first byte of the payload will indicate + // the offset from the current position to the start of the + // section. + if (psi.payloadUnitStartIndicator) { + offset += payload[offset] + 1; + } + + if (psi.type === 'pat') { + parsePat(payload.subarray(offset), psi); + } else { + parsePmt(payload.subarray(offset), psi); + } + }; + + parsePat = function parsePat(payload, pat) { + pat.section_number = payload[7]; // eslint-disable-line camelcase + pat.last_section_number = payload[8]; // eslint-disable-line camelcase + + // skip the PSI header and parse the first PMT entry + self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11]; + pat.pmtPid = self.pmtPid; + }; + + /** + * Parse out the relevant fields of a Program Map Table (PMT). + * @param payload {Uint8Array} the PMT-specific portion of an MP2T + * packet. The first byte in this array should be the table_id + * field. + * @param pmt {object} the object that should be decorated with + * fields parsed from the PMT. + */ + parsePmt = function parsePmt(payload, pmt) { + var sectionLength, tableEnd, programInfoLength, offset; + + // PMTs can be sent ahead of the time when they should actually + // take effect. We don't believe this should ever be the case + // for HLS but we'll ignore "forward" PMT declarations if we see + // them. Future PMT declarations have the current_next_indicator + // set to zero. + if (!(payload[5] & 0x01)) { + return; + } + + // overwrite any existing program map table + self.programMapTable = { + video: null, + audio: null, + 'timed-metadata': {} + }; + + // the mapping table ends at the end of the current section + sectionLength = (payload[1] & 0x0f) << 8 | payload[2]; + tableEnd = 3 + sectionLength - 4; + + // to determine where the table is, we have to figure out how + // long the program info descriptors are + programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; + + // advance the offset to the first entry in the mapping table + offset = 12 + programInfoLength; + while (offset < tableEnd) { + var streamType = payload[offset]; + var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; + + // only map a single elementary_pid for audio and video stream types + // TODO: should this be done for metadata too? for now maintain behavior of + // multiple metadata streams + if (streamType === streamTypes.H264_STREAM_TYPE && self.programMapTable.video === null) { + self.programMapTable.video = pid; + } else if (streamType === streamTypes.ADTS_STREAM_TYPE && self.programMapTable.audio === null) { + self.programMapTable.audio = pid; + } else if (streamType === streamTypes.METADATA_STREAM_TYPE) { + // map pid to stream type for metadata streams + self.programMapTable['timed-metadata'][pid] = streamType; + } + + // move to the next table entry + // skip past the elementary stream descriptors, if present + offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5; + } + + // record the map on the packet as well + pmt.programMapTable = self.programMapTable; + }; + + /** + * Deliver a new MP2T packet to the next stream in the pipeline. + */ + this.push = function (packet) { + var result = {}, + offset = 4; + + result.payloadUnitStartIndicator = !!(packet[1] & 0x40); + + // pid is a 13-bit field starting at the last bit of packet[1] + result.pid = packet[1] & 0x1f; + result.pid <<= 8; + result.pid |= packet[2]; + + // if an adaption field is present, its length is specified by the + // fifth byte of the TS packet header. The adaptation field is + // used to add stuffing to PES packets that don't fill a complete + // TS packet, and to specify some forms of timing and control data + // that we do not currently use. + if ((packet[3] & 0x30) >>> 4 > 0x01) { + offset += packet[offset] + 1; + } + + // parse the rest of the packet based on the type + if (result.pid === 0) { + result.type = 'pat'; + parsePsi(packet.subarray(offset), result); + this.trigger('data', result); + } else if (result.pid === this.pmtPid) { + result.type = 'pmt'; + parsePsi(packet.subarray(offset), result); + this.trigger('data', result); + + // if there are any packets waiting for a PMT to be found, process them now + while (this.packetsWaitingForPmt.length) { + this.processPes_.apply(this, this.packetsWaitingForPmt.shift()); + } + } else if (this.programMapTable === undefined) { + // When we have not seen a PMT yet, defer further processing of + // PES packets until one has been parsed + this.packetsWaitingForPmt.push([packet, offset, result]); + } else { + this.processPes_(packet, offset, result); + } + }; + + this.processPes_ = function (packet, offset, result) { + // set the appropriate stream type + if (result.pid === this.programMapTable.video) { + result.streamType = streamTypes.H264_STREAM_TYPE; + } else if (result.pid === this.programMapTable.audio) { + result.streamType = streamTypes.ADTS_STREAM_TYPE; + } else { + // if not video or audio, it is timed-metadata or unknown + // if unknown, streamType will be undefined + result.streamType = this.programMapTable['timed-metadata'][result.pid]; + } + + result.type = 'pes'; + result.data = packet.subarray(offset); + + this.trigger('data', result); + }; + }; + _TransportParseStream.prototype = new stream(); + _TransportParseStream.STREAM_TYPES = { + h264: 0x1b, + adts: 0x0f + }; + + /** + * Reconsistutes program elementary stream (PES) packets from parsed + * transport stream packets. That is, if you pipe an + * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output + * events will be events which capture the bytes for individual PES + * packets plus relevant metadata that has been extracted from the + * container. + */ + _ElementaryStream = function ElementaryStream() { + var self = this, + + + // PES packet fragments + video = { + data: [], + size: 0 + }, + audio = { + data: [], + size: 0 + }, + timedMetadata = { + data: [], + size: 0 + }, + parsePes = function parsePes(payload, pes) { + var ptsDtsFlags; + + // get the packet length, this will be 0 for video + pes.packetLength = 6 + (payload[4] << 8 | payload[5]); + + // find out if this packets starts a new keyframe + pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; + // PES packets may be annotated with a PTS value, or a PTS value + // and a DTS value. Determine what combination of values is + // available to work with. + ptsDtsFlags = payload[7]; + + // PTS and DTS are normally stored as a 33-bit number. Javascript + // performs all bitwise operations on 32-bit integers but javascript + // supports a much greater range (52-bits) of integer using standard + // mathematical operations. + // We construct a 31-bit value using bitwise operators over the 31 + // most significant bits and then multiply by 4 (equal to a left-shift + // of 2) before we add the final 2 least significant bits of the + // timestamp (equal to an OR.) + if (ptsDtsFlags & 0xC0) { + // the PTS and DTS are not written out directly. For information + // on how they are encoded, see + // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html + pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3; + pes.pts *= 4; // Left shift by 2 + pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs + pes.dts = pes.pts; + if (ptsDtsFlags & 0x40) { + pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3; + pes.dts *= 4; // Left shift by 2 + pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs + } + } + // the data section starts immediately after the PES header. + // pes_header_data_length specifies the number of header bytes + // that follow the last byte of the field. + pes.data = payload.subarray(9 + payload[8]); + }, + + + /** + * Pass completely parsed PES packets to the next stream in the pipeline + **/ + flushStream = function flushStream(stream$$1, type, forceFlush) { + var packetData = new Uint8Array(stream$$1.size), + event = { + type: type + }, + i = 0, + offset = 0, + packetFlushable = false, + fragment; + + // do nothing if there is not enough buffered data for a complete + // PES header + if (!stream$$1.data.length || stream$$1.size < 9) { + return; + } + event.trackId = stream$$1.data[0].pid; + + // reassemble the packet + for (i = 0; i < stream$$1.data.length; i++) { + fragment = stream$$1.data[i]; + + packetData.set(fragment.data, offset); + offset += fragment.data.byteLength; + } + + // parse assembled packet's PES header + parsePes(packetData, event); + + // non-video PES packets MUST have a non-zero PES_packet_length + // check that there is enough stream data to fill the packet + packetFlushable = type === 'video' || event.packetLength <= stream$$1.size; + + // flush pending packets if the conditions are right + if (forceFlush || packetFlushable) { + stream$$1.size = 0; + stream$$1.data.length = 0; + } + + // only emit packets that are complete. this is to avoid assembling + // incomplete PES packets due to poor segmentation + if (packetFlushable) { + self.trigger('data', event); + } + }; + + _ElementaryStream.prototype.init.call(this); + + /** + * Identifies M2TS packet types and parses PES packets using metadata + * parsed from the PMT + **/ + this.push = function (data) { + ({ + pat: function pat() { + // we have to wait for the PMT to arrive as well before we + // have any meaningful metadata + }, + pes: function pes() { + var stream$$1, streamType; + + switch (data.streamType) { + case streamTypes.H264_STREAM_TYPE: + case streamTypes.H264_STREAM_TYPE: + stream$$1 = video; + streamType = 'video'; + break; + case streamTypes.ADTS_STREAM_TYPE: + stream$$1 = audio; + streamType = 'audio'; + break; + case streamTypes.METADATA_STREAM_TYPE: + stream$$1 = timedMetadata; + streamType = 'timed-metadata'; + break; + default: + // ignore unknown stream types + return; + } + + // if a new packet is starting, we can flush the completed + // packet + if (data.payloadUnitStartIndicator) { + flushStream(stream$$1, streamType, true); + } + + // buffer this fragment until we are sure we've received the + // complete payload + stream$$1.data.push(data); + stream$$1.size += data.data.byteLength; + }, + pmt: function pmt() { + var event = { + type: 'metadata', + tracks: [] + }, + programMapTable = data.programMapTable; + + // translate audio and video streams to tracks + if (programMapTable.video !== null) { + event.tracks.push({ + timelineStartInfo: { + baseMediaDecodeTime: 0 + }, + id: +programMapTable.video, + codec: 'avc', + type: 'video' + }); + } + if (programMapTable.audio !== null) { + event.tracks.push({ + timelineStartInfo: { + baseMediaDecodeTime: 0 + }, + id: +programMapTable.audio, + codec: 'adts', + type: 'audio' + }); + } + + self.trigger('data', event); + } + })[data.type](); + }; + + /** + * Flush any remaining input. Video PES packets may be of variable + * length. Normally, the start of a new video packet can trigger the + * finalization of the previous packet. That is not possible if no + * more video is forthcoming, however. In that case, some other + * mechanism (like the end of the file) has to be employed. When it is + * clear that no additional data is forthcoming, calling this method + * will flush the buffered packets. + */ + this.flush = function () { + // !!THIS ORDER IS IMPORTANT!! + // video first then audio + flushStream(video, 'video'); + flushStream(audio, 'audio'); + flushStream(timedMetadata, 'timed-metadata'); + this.trigger('done'); + }; + }; + _ElementaryStream.prototype = new stream(); + + var m2ts = { + PAT_PID: 0x0000, + MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH, + TransportPacketStream: _TransportPacketStream, + TransportParseStream: _TransportParseStream, + ElementaryStream: _ElementaryStream, + TimestampRolloverStream: TimestampRolloverStream$1, + CaptionStream: captionStream.CaptionStream, + Cea608Stream: captionStream.Cea608Stream, + MetadataStream: metadataStream + }; + + for (var type in streamTypes) { + if (streamTypes.hasOwnProperty(type)) { + m2ts[type] = streamTypes[type]; + } + } + + var m2ts_1 = m2ts; + + var _AdtsStream; + + var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350]; + + /* + * Accepts a ElementaryStream and emits data events with parsed + * AAC Audio Frames of the individual packets. Input audio in ADTS + * format is unpacked and re-emitted as AAC frames. + * + * @see http://wiki.multimedia.cx/index.php?title=ADTS + * @see http://wiki.multimedia.cx/?title=Understanding_AAC + */ + _AdtsStream = function AdtsStream() { + var buffer; + + _AdtsStream.prototype.init.call(this); + + this.push = function (packet) { + var i = 0, + frameNum = 0, + frameLength, + protectionSkipBytes, + frameEnd, + oldBuffer, + sampleCount, + adtsFrameDuration; + + if (packet.type !== 'audio') { + // ignore non-audio data + return; + } + + // Prepend any data in the buffer to the input data so that we can parse + // aac frames the cross a PES packet boundary + if (buffer) { + oldBuffer = buffer; + buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength); + buffer.set(oldBuffer); + buffer.set(packet.data, oldBuffer.byteLength); + } else { + buffer = packet.data; + } + + // unpack any ADTS frames which have been fully received + // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS + while (i + 5 < buffer.length) { + + // Loook for the start of an ADTS header.. + if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) { + // If a valid header was not found, jump one forward and attempt to + // find a valid ADTS header starting at the next byte + i++; + continue; + } + + // The protection skip bit tells us if we have 2 bytes of CRC data at the + // end of the ADTS header + protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; + + // Frame length is a 13 bit integer starting 16 bits from the + // end of the sync sequence + frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5; + + sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024; + adtsFrameDuration = sampleCount * 90000 / ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2]; + + frameEnd = i + frameLength; + + // If we don't have enough data to actually finish this ADTS frame, return + // and wait for more data + if (buffer.byteLength < frameEnd) { + return; + } + + // Otherwise, deliver the complete AAC frame + this.trigger('data', { + pts: packet.pts + frameNum * adtsFrameDuration, + dts: packet.dts + frameNum * adtsFrameDuration, + sampleCount: sampleCount, + audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1, + channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6, + samplerate: ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2], + samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2, + // assume ISO/IEC 14496-12 AudioSampleEntry default of 16 + samplesize: 16, + data: buffer.subarray(i + 7 + protectionSkipBytes, frameEnd) + }); + + // If the buffer is empty, clear it and return + if (buffer.byteLength === frameEnd) { + buffer = undefined; + return; + } + + frameNum++; + + // Remove the finished frame from the buffer and start the process again + buffer = buffer.subarray(frameEnd); + } + }; + this.flush = function () { + this.trigger('done'); + }; + }; + + _AdtsStream.prototype = new stream(); + + var adts = _AdtsStream; + + var ExpGolomb; + + /** + * Parser for exponential Golomb codes, a variable-bitwidth number encoding + * scheme used by h264. + */ + ExpGolomb = function ExpGolomb(workingData) { + var + // the number of bytes left to examine in workingData + workingBytesAvailable = workingData.byteLength, + + + // the current word being examined + workingWord = 0, + + + // :uint + + // the number of bits left to examine in the current word + workingBitsAvailable = 0; // :uint; + + // ():uint + this.length = function () { + return 8 * workingBytesAvailable; + }; + + // ():uint + this.bitsAvailable = function () { + return 8 * workingBytesAvailable + workingBitsAvailable; + }; + + // ():void + this.loadWord = function () { + var position = workingData.byteLength - workingBytesAvailable, + workingBytes = new Uint8Array(4), + availableBytes = Math.min(4, workingBytesAvailable); + + if (availableBytes === 0) { + throw new Error('no bytes available'); + } + + workingBytes.set(workingData.subarray(position, position + availableBytes)); + workingWord = new DataView(workingBytes.buffer).getUint32(0); + + // track the amount of workingData that has been processed + workingBitsAvailable = availableBytes * 8; + workingBytesAvailable -= availableBytes; + }; + + // (count:int):void + this.skipBits = function (count) { + var skipBytes; // :int + if (workingBitsAvailable > count) { + workingWord <<= count; + workingBitsAvailable -= count; + } else { + count -= workingBitsAvailable; + skipBytes = Math.floor(count / 8); + + count -= skipBytes * 8; + workingBytesAvailable -= skipBytes; + + this.loadWord(); + + workingWord <<= count; + workingBitsAvailable -= count; + } + }; + + // (size:int):uint + this.readBits = function (size) { + var bits = Math.min(workingBitsAvailable, size), + + + // :uint + valu = workingWord >>> 32 - bits; // :uint + // if size > 31, handle error + workingBitsAvailable -= bits; + if (workingBitsAvailable > 0) { + workingWord <<= bits; + } else if (workingBytesAvailable > 0) { + this.loadWord(); + } + + bits = size - bits; + if (bits > 0) { + return valu << bits | this.readBits(bits); + } + return valu; + }; + + // ():uint + this.skipLeadingZeros = function () { + var leadingZeroCount; // :uint + for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) { + if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) { + // the first bit of working word is 1 + workingWord <<= leadingZeroCount; + workingBitsAvailable -= leadingZeroCount; + return leadingZeroCount; + } + } + + // we exhausted workingWord and still have not found a 1 + this.loadWord(); + return leadingZeroCount + this.skipLeadingZeros(); + }; + + // ():void + this.skipUnsignedExpGolomb = function () { + this.skipBits(1 + this.skipLeadingZeros()); + }; + + // ():void + this.skipExpGolomb = function () { + this.skipBits(1 + this.skipLeadingZeros()); + }; + + // ():uint + this.readUnsignedExpGolomb = function () { + var clz = this.skipLeadingZeros(); // :uint + return this.readBits(clz + 1) - 1; + }; + + // ():int + this.readExpGolomb = function () { + var valu = this.readUnsignedExpGolomb(); // :int + if (0x01 & valu) { + // the number is odd if the low order bit is set + return 1 + valu >>> 1; // add 1 to make it even, and divide by 2 + } + return -1 * (valu >>> 1); // divide by two then make it negative + }; + + // Some convenience functions + // :Boolean + this.readBoolean = function () { + return this.readBits(1) === 1; + }; + + // ():int + this.readUnsignedByte = function () { + return this.readBits(8); + }; + + this.loadWord(); + }; + + var expGolomb = ExpGolomb; + + var _H264Stream, _NalByteStream; + var PROFILES_WITH_OPTIONAL_SPS_DATA; + + /** + * Accepts a NAL unit byte stream and unpacks the embedded NAL units. + */ + _NalByteStream = function NalByteStream() { + var syncPoint = 0, + i, + buffer; + _NalByteStream.prototype.init.call(this); + + /* + * Scans a byte stream and triggers a data event with the NAL units found. + * @param {Object} data Event received from H264Stream + * @param {Uint8Array} data.data The h264 byte stream to be scanned + * + * @see H264Stream.push + */ + this.push = function (data) { + var swapBuffer; + + if (!buffer) { + buffer = data.data; + } else { + swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength); + swapBuffer.set(buffer); + swapBuffer.set(data.data, buffer.byteLength); + buffer = swapBuffer; + } + + // Rec. ITU-T H.264, Annex B + // scan for NAL unit boundaries + + // a match looks like this: + // 0 0 1 .. NAL .. 0 0 1 + // ^ sync point ^ i + // or this: + // 0 0 1 .. NAL .. 0 0 0 + // ^ sync point ^ i + + // advance the sync point to a NAL start, if necessary + for (; syncPoint < buffer.byteLength - 3; syncPoint++) { + if (buffer[syncPoint + 2] === 1) { + // the sync point is properly aligned + i = syncPoint + 5; + break; + } + } + + while (i < buffer.byteLength) { + // look at the current byte to determine if we've hit the end of + // a NAL unit boundary + switch (buffer[i]) { + case 0: + // skip past non-sync sequences + if (buffer[i - 1] !== 0) { + i += 2; + break; + } else if (buffer[i - 2] !== 0) { + i++; + break; + } + + // deliver the NAL unit if it isn't empty + if (syncPoint + 3 !== i - 2) { + this.trigger('data', buffer.subarray(syncPoint + 3, i - 2)); + } + + // drop trailing zeroes + do { + i++; + } while (buffer[i] !== 1 && i < buffer.length); + syncPoint = i - 2; + i += 3; + break; + case 1: + // skip past non-sync sequences + if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) { + i += 3; + break; + } + + // deliver the NAL unit + this.trigger('data', buffer.subarray(syncPoint + 3, i - 2)); + syncPoint = i - 2; + i += 3; + break; + default: + // the current byte isn't a one or zero, so it cannot be part + // of a sync sequence + i += 3; + break; + } + } + // filter out the NAL units that were delivered + buffer = buffer.subarray(syncPoint); + i -= syncPoint; + syncPoint = 0; + }; + + this.flush = function () { + // deliver the last buffered NAL unit + if (buffer && buffer.byteLength > 3) { + this.trigger('data', buffer.subarray(syncPoint + 3)); + } + // reset the stream state + buffer = null; + syncPoint = 0; + this.trigger('done'); + }; + }; + _NalByteStream.prototype = new stream(); + + // values of profile_idc that indicate additional fields are included in the SPS + // see Recommendation ITU-T H.264 (4/2013), + // 7.3.2.1.1 Sequence parameter set data syntax + PROFILES_WITH_OPTIONAL_SPS_DATA = { + 100: true, + 110: true, + 122: true, + 244: true, + 44: true, + 83: true, + 86: true, + 118: true, + 128: true, + 138: true, + 139: true, + 134: true + }; + + /** + * Accepts input from a ElementaryStream and produces H.264 NAL unit data + * events. + */ + _H264Stream = function H264Stream() { + var nalByteStream = new _NalByteStream(), + self, + trackId, + currentPts, + currentDts, + discardEmulationPreventionBytes, + readSequenceParameterSet, + skipScalingList; + + _H264Stream.prototype.init.call(this); + self = this; + + /* + * Pushes a packet from a stream onto the NalByteStream + * + * @param {Object} packet - A packet received from a stream + * @param {Uint8Array} packet.data - The raw bytes of the packet + * @param {Number} packet.dts - Decode timestamp of the packet + * @param {Number} packet.pts - Presentation timestamp of the packet + * @param {Number} packet.trackId - The id of the h264 track this packet came from + * @param {('video'|'audio')} packet.type - The type of packet + * + */ + this.push = function (packet) { + if (packet.type !== 'video') { + return; + } + trackId = packet.trackId; + currentPts = packet.pts; + currentDts = packet.dts; + + nalByteStream.push(packet); + }; + + /* + * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps + * for the NALUs to the next stream component. + * Also, preprocess caption and sequence parameter NALUs. + * + * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push` + * @see NalByteStream.push + */ + nalByteStream.on('data', function (data) { + var event = { + trackId: trackId, + pts: currentPts, + dts: currentDts, + data: data + }; + + switch (data[0] & 0x1f) { + case 0x05: + event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr'; + break; + case 0x06: + event.nalUnitType = 'sei_rbsp'; + event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1)); + break; + case 0x07: + event.nalUnitType = 'seq_parameter_set_rbsp'; + event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1)); + event.config = readSequenceParameterSet(event.escapedRBSP); + break; + case 0x08: + event.nalUnitType = 'pic_parameter_set_rbsp'; + break; + case 0x09: + event.nalUnitType = 'access_unit_delimiter_rbsp'; + break; + + default: + break; + } + // This triggers data on the H264Stream + self.trigger('data', event); + }); + nalByteStream.on('done', function () { + self.trigger('done'); + }); + + this.flush = function () { + nalByteStream.flush(); + }; + + /** + * Advance the ExpGolomb decoder past a scaling list. The scaling + * list is optionally transmitted as part of a sequence parameter + * set and is not relevant to transmuxing. + * @param count {number} the number of entries in this scaling list + * @param expGolombDecoder {object} an ExpGolomb pointed to the + * start of a scaling list + * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1 + */ + skipScalingList = function skipScalingList(count, expGolombDecoder) { + var lastScale = 8, + nextScale = 8, + j, + deltaScale; + + for (j = 0; j < count; j++) { + if (nextScale !== 0) { + deltaScale = expGolombDecoder.readExpGolomb(); + nextScale = (lastScale + deltaScale + 256) % 256; + } + + lastScale = nextScale === 0 ? lastScale : nextScale; + } + }; + + /** + * Expunge any "Emulation Prevention" bytes from a "Raw Byte + * Sequence Payload" + * @param data {Uint8Array} the bytes of a RBSP from a NAL + * unit + * @return {Uint8Array} the RBSP without any Emulation + * Prevention Bytes + */ + discardEmulationPreventionBytes = function discardEmulationPreventionBytes(data) { + var length = data.byteLength, + emulationPreventionBytesPositions = [], + i = 1, + newLength, + newData; + + // Find all `Emulation Prevention Bytes` + while (i < length - 2) { + if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) { + emulationPreventionBytesPositions.push(i + 2); + i += 2; + } else { + i++; + } + } + + // If no Emulation Prevention Bytes were found just return the original + // array + if (emulationPreventionBytesPositions.length === 0) { + return data; + } + + // Create a new array to hold the NAL unit data + newLength = length - emulationPreventionBytesPositions.length; + newData = new Uint8Array(newLength); + var sourceIndex = 0; + + for (i = 0; i < newLength; sourceIndex++, i++) { + if (sourceIndex === emulationPreventionBytesPositions[0]) { + // Skip this byte + sourceIndex++; + // Remove this position index + emulationPreventionBytesPositions.shift(); + } + newData[i] = data[sourceIndex]; + } + + return newData; + }; + + /** + * Read a sequence parameter set and return some interesting video + * properties. A sequence parameter set is the H264 metadata that + * describes the properties of upcoming video frames. + * @param data {Uint8Array} the bytes of a sequence parameter set + * @return {object} an object with configuration parsed from the + * sequence parameter set, including the dimensions of the + * associated video frames. + */ + readSequenceParameterSet = function readSequenceParameterSet(data) { + var frameCropLeftOffset = 0, + frameCropRightOffset = 0, + frameCropTopOffset = 0, + frameCropBottomOffset = 0, + sarScale = 1, + expGolombDecoder, + profileIdc, + levelIdc, + profileCompatibility, + chromaFormatIdc, + picOrderCntType, + numRefFramesInPicOrderCntCycle, + picWidthInMbsMinus1, + picHeightInMapUnitsMinus1, + frameMbsOnlyFlag, + scalingListCount, + sarRatio, + aspectRatioIdc, + i; + + expGolombDecoder = new expGolomb(data); + profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc + profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag + levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8) + expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id + + // some profiles have more optional data we don't need + if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) { + chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb(); + if (chromaFormatIdc === 3) { + expGolombDecoder.skipBits(1); // separate_colour_plane_flag + } + expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8 + expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8 + expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag + if (expGolombDecoder.readBoolean()) { + // seq_scaling_matrix_present_flag + scalingListCount = chromaFormatIdc !== 3 ? 8 : 12; + for (i = 0; i < scalingListCount; i++) { + if (expGolombDecoder.readBoolean()) { + // seq_scaling_list_present_flag[ i ] + if (i < 6) { + skipScalingList(16, expGolombDecoder); + } else { + skipScalingList(64, expGolombDecoder); + } + } + } + } + } + + expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4 + picOrderCntType = expGolombDecoder.readUnsignedExpGolomb(); + + if (picOrderCntType === 0) { + expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4 + } else if (picOrderCntType === 1) { + expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag + expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic + expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field + numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb(); + for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) { + expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ] + } + } + + expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames + expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag + + picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb(); + picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb(); + + frameMbsOnlyFlag = expGolombDecoder.readBits(1); + if (frameMbsOnlyFlag === 0) { + expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag + } + + expGolombDecoder.skipBits(1); // direct_8x8_inference_flag + if (expGolombDecoder.readBoolean()) { + // frame_cropping_flag + frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb(); + frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb(); + frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb(); + frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb(); + } + if (expGolombDecoder.readBoolean()) { + // vui_parameters_present_flag + if (expGolombDecoder.readBoolean()) { + // aspect_ratio_info_present_flag + aspectRatioIdc = expGolombDecoder.readUnsignedByte(); + switch (aspectRatioIdc) { + case 1: + sarRatio = [1, 1];break; + case 2: + sarRatio = [12, 11];break; + case 3: + sarRatio = [10, 11];break; + case 4: + sarRatio = [16, 11];break; + case 5: + sarRatio = [40, 33];break; + case 6: + sarRatio = [24, 11];break; + case 7: + sarRatio = [20, 11];break; + case 8: + sarRatio = [32, 11];break; + case 9: + sarRatio = [80, 33];break; + case 10: + sarRatio = [18, 11];break; + case 11: + sarRatio = [15, 11];break; + case 12: + sarRatio = [64, 33];break; + case 13: + sarRatio = [160, 99];break; + case 14: + sarRatio = [4, 3];break; + case 15: + sarRatio = [3, 2];break; + case 16: + sarRatio = [2, 1];break; + case 255: + { + sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()]; + break; + } + } + if (sarRatio) { + sarScale = sarRatio[0] / sarRatio[1]; + } + } + } + return { + profileIdc: profileIdc, + levelIdc: levelIdc, + profileCompatibility: profileCompatibility, + width: Math.ceil(((picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2) * sarScale), + height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2 + }; + }; + }; + _H264Stream.prototype = new stream(); + + var h264 = { + H264Stream: _H264Stream, + NalByteStream: _NalByteStream + }; + + // Constants + var _AacStream; + + /** + * Splits an incoming stream of binary data into ADTS and ID3 Frames. + */ + + _AacStream = function AacStream() { + var everything = new Uint8Array(), + timeStamp = 0; + + _AacStream.prototype.init.call(this); + + this.setTimestamp = function (timestamp) { + timeStamp = timestamp; + }; + + this.parseId3TagSize = function (header, byteIndex) { + var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9], + flags = header[byteIndex + 5], + footerPresent = (flags & 16) >> 4; + + if (footerPresent) { + return returnSize + 20; + } + return returnSize + 10; + }; + + this.parseAdtsSize = function (header, byteIndex) { + var lowThree = (header[byteIndex + 5] & 0xE0) >> 5, + middle = header[byteIndex + 4] << 3, + highTwo = header[byteIndex + 3] & 0x3 << 11; + + return highTwo | middle | lowThree; + }; + + this.push = function (bytes) { + var frameSize = 0, + byteIndex = 0, + bytesLeft, + chunk, + packet, + tempLength; + + // If there are bytes remaining from the last segment, prepend them to the + // bytes that were pushed in + if (everything.length) { + tempLength = everything.length; + everything = new Uint8Array(bytes.byteLength + tempLength); + everything.set(everything.subarray(0, tempLength)); + everything.set(bytes, tempLength); + } else { + everything = bytes; + } + + while (everything.length - byteIndex >= 3) { + if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) { + + // Exit early because we don't have enough to parse + // the ID3 tag header + if (everything.length - byteIndex < 10) { + break; + } + + // check framesize + frameSize = this.parseId3TagSize(everything, byteIndex); + + // Exit early if we don't have enough in the buffer + // to emit a full packet + if (frameSize > everything.length) { + break; + } + chunk = { + type: 'timed-metadata', + data: everything.subarray(byteIndex, byteIndex + frameSize) + }; + this.trigger('data', chunk); + byteIndex += frameSize; + continue; + } else if (everything[byteIndex] & 0xff === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) { + + // Exit early because we don't have enough to parse + // the ADTS frame header + if (everything.length - byteIndex < 7) { + break; + } + + frameSize = this.parseAdtsSize(everything, byteIndex); + + // Exit early if we don't have enough in the buffer + // to emit a full packet + if (frameSize > everything.length) { + break; + } + + packet = { + type: 'audio', + data: everything.subarray(byteIndex, byteIndex + frameSize), + pts: timeStamp, + dts: timeStamp + }; + this.trigger('data', packet); + byteIndex += frameSize; + continue; + } + byteIndex++; + } + bytesLeft = everything.length - byteIndex; + + if (bytesLeft > 0) { + everything = everything.subarray(byteIndex); + } else { + everything = new Uint8Array(); + } + }; + }; + + _AacStream.prototype = new stream(); + + var aac = _AacStream; + + var highPrefix = [33, 16, 5, 32, 164, 27]; + var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252]; + var zeroFill = function zeroFill(count) { + var a = []; + while (count--) { + a.push(0); + } + return a; + }; + + var makeTable = function makeTable(metaTable) { + return Object.keys(metaTable).reduce(function (obj, key) { + obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) { + return arr.concat(part); + }, [])); + return obj; + }, {}); + }; + + // Frames-of-silence to use for filling in missing AAC frames + var coneOfSilence = { + 96000: [highPrefix, [227, 64], zeroFill(154), [56]], + 88200: [highPrefix, [231], zeroFill(170), [56]], + 64000: [highPrefix, [248, 192], zeroFill(240), [56]], + 48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]], + 44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]], + 32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]], + 24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]], + 16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]], + 12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]], + 11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]], + 8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]] + }; + + var silence = makeTable(coneOfSilence); + + var ONE_SECOND_IN_TS$1 = 90000, + + + // 90kHz clock + secondsToVideoTs, + secondsToAudioTs, + videoTsToSeconds, + audioTsToSeconds, + audioTsToVideoTs, + videoTsToAudioTs; + + secondsToVideoTs = function secondsToVideoTs(seconds) { + return seconds * ONE_SECOND_IN_TS$1; + }; + + secondsToAudioTs = function secondsToAudioTs(seconds, sampleRate) { + return seconds * sampleRate; + }; + + videoTsToSeconds = function videoTsToSeconds(timestamp) { + return timestamp / ONE_SECOND_IN_TS$1; + }; + + audioTsToSeconds = function audioTsToSeconds(timestamp, sampleRate) { + return timestamp / sampleRate; + }; + + audioTsToVideoTs = function audioTsToVideoTs(timestamp, sampleRate) { + return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate)); + }; + + videoTsToAudioTs = function videoTsToAudioTs(timestamp, sampleRate) { + return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate); + }; + + var clock = { + secondsToVideoTs: secondsToVideoTs, + secondsToAudioTs: secondsToAudioTs, + videoTsToSeconds: videoTsToSeconds, + audioTsToSeconds: audioTsToSeconds, + audioTsToVideoTs: audioTsToVideoTs, + videoTsToAudioTs: videoTsToAudioTs + }; + + var H264Stream = h264.H264Stream; + + // constants + var AUDIO_PROPERTIES = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize']; + + var VIDEO_PROPERTIES = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility']; + + var ONE_SECOND_IN_TS$2 = 90000; // 90kHz clock + + // object types + var _VideoSegmentStream, _AudioSegmentStream, _Transmuxer, _CoalesceStream; + + // Helper functions + var isLikelyAacData, arrayEquals, sumFrameByteLengths; + + isLikelyAacData = function isLikelyAacData(data) { + if (data[0] === 'I'.charCodeAt(0) && data[1] === 'D'.charCodeAt(0) && data[2] === '3'.charCodeAt(0)) { + return true; + } + return false; + }; + + /** + * Compare two arrays (even typed) for same-ness + */ + arrayEquals = function arrayEquals(a, b) { + var i; + + if (a.length !== b.length) { + return false; + } + + // compare the value of each element in the array + for (i = 0; i < a.length; i++) { + if (a[i] !== b[i]) { + return false; + } + } + + return true; + }; + + /** + * Sum the `byteLength` properties of the data in each AAC frame + */ + sumFrameByteLengths = function sumFrameByteLengths(array) { + var i, + currentObj, + sum = 0; + + // sum the byteLength's all each nal unit in the frame + for (i = 0; i < array.length; i++) { + currentObj = array[i]; + sum += currentObj.data.byteLength; + } + + return sum; + }; + + /** + * Constructs a single-track, ISO BMFF media segment from AAC data + * events. The output of this stream can be fed to a SourceBuffer + * configured with a suitable initialization segment. + * @param track {object} track metadata configuration + * @param options {object} transmuxer options object + * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps + * in the source; false to adjust the first segment to start at 0. + */ + _AudioSegmentStream = function AudioSegmentStream(track, options) { + var adtsFrames = [], + sequenceNumber = 0, + earliestAllowedDts = 0, + audioAppendStartTs = 0, + videoBaseMediaDecodeTime = Infinity; + + options = options || {}; + + _AudioSegmentStream.prototype.init.call(this); + + this.push = function (data) { + trackDecodeInfo.collectDtsInfo(track, data); + + if (track) { + AUDIO_PROPERTIES.forEach(function (prop) { + track[prop] = data[prop]; + }); + } + + // buffer audio data until end() is called + adtsFrames.push(data); + }; + + this.setEarliestDts = function (earliestDts) { + earliestAllowedDts = earliestDts - track.timelineStartInfo.baseMediaDecodeTime; + }; + + this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) { + videoBaseMediaDecodeTime = baseMediaDecodeTime; + }; + + this.setAudioAppendStart = function (timestamp) { + audioAppendStartTs = timestamp; + }; + + this.flush = function () { + var frames, moof, mdat, boxes; + + // return early if no audio data has been observed + if (adtsFrames.length === 0) { + this.trigger('done', 'AudioSegmentStream'); + return; + } + + frames = this.trimAdtsFramesByEarliestDts_(adtsFrames); + track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); + + this.prefixWithSilence_(track, frames); + + // we have to build the index from byte locations to + // samples (that is, adts frames) in the audio data + track.samples = this.generateSampleTable_(frames); + + // concatenate the audio data to constuct the mdat + mdat = mp4Generator.mdat(this.concatenateFrameData_(frames)); + + adtsFrames = []; + + moof = mp4Generator.moof(sequenceNumber, [track]); + boxes = new Uint8Array(moof.byteLength + mdat.byteLength); + + // bump the sequence number for next time + sequenceNumber++; + + boxes.set(moof); + boxes.set(mdat, moof.byteLength); + + trackDecodeInfo.clearDtsInfo(track); + + this.trigger('data', { track: track, boxes: boxes }); + this.trigger('done', 'AudioSegmentStream'); + }; + + // Possibly pad (prefix) the audio track with silence if appending this track + // would lead to the introduction of a gap in the audio buffer + this.prefixWithSilence_ = function (track, frames) { + var baseMediaDecodeTimeTs, + frameDuration = 0, + audioGapDuration = 0, + audioFillFrameCount = 0, + audioFillDuration = 0, + silentFrame, + i; + + if (!frames.length) { + return; + } + + baseMediaDecodeTimeTs = clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); + // determine frame clock duration based on sample rate, round up to avoid overfills + frameDuration = Math.ceil(ONE_SECOND_IN_TS$2 / (track.samplerate / 1024)); + + if (audioAppendStartTs && videoBaseMediaDecodeTime) { + // insert the shortest possible amount (audio gap or audio to video gap) + audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); + // number of full frames in the audio gap + audioFillFrameCount = Math.floor(audioGapDuration / frameDuration); + audioFillDuration = audioFillFrameCount * frameDuration; + } + + // don't attempt to fill gaps smaller than a single frame or larger + // than a half second + if (audioFillFrameCount < 1 || audioFillDuration > ONE_SECOND_IN_TS$2 / 2) { + return; + } + + silentFrame = silence[track.samplerate]; + + if (!silentFrame) { + // we don't have a silent frame pregenerated for the sample rate, so use a frame + // from the content instead + silentFrame = frames[0].data; + } + + for (i = 0; i < audioFillFrameCount; i++) { + frames.splice(i, 0, { + data: silentFrame + }); + } + + track.baseMediaDecodeTime -= Math.floor(clock.videoTsToAudioTs(audioFillDuration, track.samplerate)); + }; + + // If the audio segment extends before the earliest allowed dts + // value, remove AAC frames until starts at or after the earliest + // allowed DTS so that we don't end up with a negative baseMedia- + // DecodeTime for the audio track + this.trimAdtsFramesByEarliestDts_ = function (adtsFrames) { + if (track.minSegmentDts >= earliestAllowedDts) { + return adtsFrames; + } + + // We will need to recalculate the earliest segment Dts + track.minSegmentDts = Infinity; + + return adtsFrames.filter(function (currentFrame) { + // If this is an allowed frame, keep it and record it's Dts + if (currentFrame.dts >= earliestAllowedDts) { + track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts); + track.minSegmentPts = track.minSegmentDts; + return true; + } + // Otherwise, discard it + return false; + }); + }; + + // generate the track's raw mdat data from an array of frames + this.generateSampleTable_ = function (frames) { + var i, + currentFrame, + samples = []; + + for (i = 0; i < frames.length; i++) { + currentFrame = frames[i]; + samples.push({ + size: currentFrame.data.byteLength, + duration: 1024 // For AAC audio, all samples contain 1024 samples + }); + } + return samples; + }; + + // generate the track's sample table from an array of frames + this.concatenateFrameData_ = function (frames) { + var i, + currentFrame, + dataOffset = 0, + data = new Uint8Array(sumFrameByteLengths(frames)); + + for (i = 0; i < frames.length; i++) { + currentFrame = frames[i]; + + data.set(currentFrame.data, dataOffset); + dataOffset += currentFrame.data.byteLength; + } + return data; + }; + }; + + _AudioSegmentStream.prototype = new stream(); + + /** + * Constructs a single-track, ISO BMFF media segment from H264 data + * events. The output of this stream can be fed to a SourceBuffer + * configured with a suitable initialization segment. + * @param track {object} track metadata configuration + * @param options {object} transmuxer options object + * @param options.alignGopsAtEnd {boolean} If true, start from the end of the + * gopsToAlignWith list when attempting to align gop pts + * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps + * in the source; false to adjust the first segment to start at 0. + */ + _VideoSegmentStream = function VideoSegmentStream(track, options) { + var sequenceNumber = 0, + nalUnits = [], + gopsToAlignWith = [], + config, + pps; + + options = options || {}; + + _VideoSegmentStream.prototype.init.call(this); + + delete track.minPTS; + + this.gopCache_ = []; + + /** + * Constructs a ISO BMFF segment given H264 nalUnits + * @param {Object} nalUnit A data event representing a nalUnit + * @param {String} nalUnit.nalUnitType + * @param {Object} nalUnit.config Properties for a mp4 track + * @param {Uint8Array} nalUnit.data The nalUnit bytes + * @see lib/codecs/h264.js + **/ + this.push = function (nalUnit) { + trackDecodeInfo.collectDtsInfo(track, nalUnit); + + // record the track config + if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) { + config = nalUnit.config; + track.sps = [nalUnit.data]; + + VIDEO_PROPERTIES.forEach(function (prop) { + track[prop] = config[prop]; + }, this); + } + + if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) { + pps = nalUnit.data; + track.pps = [nalUnit.data]; + } + + // buffer video until flush() is called + nalUnits.push(nalUnit); + }; + + /** + * Pass constructed ISO BMFF track and boxes on to the + * next stream in the pipeline + **/ + this.flush = function () { + var frames, gopForFusion, gops, moof, mdat, boxes; + + // Throw away nalUnits at the start of the byte stream until + // we find the first AUD + while (nalUnits.length) { + if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') { + break; + } + nalUnits.shift(); + } + + // Return early if no video data has been observed + if (nalUnits.length === 0) { + this.resetStream_(); + this.trigger('done', 'VideoSegmentStream'); + return; + } + + // Organize the raw nal-units into arrays that represent + // higher-level constructs such as frames and gops + // (group-of-pictures) + frames = frameUtils.groupNalsIntoFrames(nalUnits); + gops = frameUtils.groupFramesIntoGops(frames); + + // If the first frame of this fragment is not a keyframe we have + // a problem since MSE (on Chrome) requires a leading keyframe. + // + // We have two approaches to repairing this situation: + // 1) GOP-FUSION: + // This is where we keep track of the GOPS (group-of-pictures) + // from previous fragments and attempt to find one that we can + // prepend to the current fragment in order to create a valid + // fragment. + // 2) KEYFRAME-PULLING: + // Here we search for the first keyframe in the fragment and + // throw away all the frames between the start of the fragment + // and that keyframe. We then extend the duration and pull the + // PTS of the keyframe forward so that it covers the time range + // of the frames that were disposed of. + // + // #1 is far prefereable over #2 which can cause "stuttering" but + // requires more things to be just right. + if (!gops[0][0].keyFrame) { + // Search for a gop for fusion from our gopCache + gopForFusion = this.getGopForFusion_(nalUnits[0], track); + + if (gopForFusion) { + gops.unshift(gopForFusion); + // Adjust Gops' metadata to account for the inclusion of the + // new gop at the beginning + gops.byteLength += gopForFusion.byteLength; + gops.nalCount += gopForFusion.nalCount; + gops.pts = gopForFusion.pts; + gops.dts = gopForFusion.dts; + gops.duration += gopForFusion.duration; + } else { + // If we didn't find a candidate gop fall back to keyframe-pulling + gops = frameUtils.extendFirstKeyFrame(gops); + } + } + + // Trim gops to align with gopsToAlignWith + if (gopsToAlignWith.length) { + var alignedGops; + + if (options.alignGopsAtEnd) { + alignedGops = this.alignGopsAtEnd_(gops); + } else { + alignedGops = this.alignGopsAtStart_(gops); + } + + if (!alignedGops) { + // save all the nals in the last GOP into the gop cache + this.gopCache_.unshift({ + gop: gops.pop(), + pps: track.pps, + sps: track.sps + }); + + // Keep a maximum of 6 GOPs in the cache + this.gopCache_.length = Math.min(6, this.gopCache_.length); + + // Clear nalUnits + nalUnits = []; + + // return early no gops can be aligned with desired gopsToAlignWith + this.resetStream_(); + this.trigger('done', 'VideoSegmentStream'); + return; + } + + // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct + // when recalculated before sending off to CoalesceStream + trackDecodeInfo.clearDtsInfo(track); + + gops = alignedGops; + } + + trackDecodeInfo.collectDtsInfo(track, gops); + + // First, we have to build the index from byte locations to + // samples (that is, frames) in the video data + track.samples = frameUtils.generateSampleTable(gops); + + // Concatenate the video data and construct the mdat + mdat = mp4Generator.mdat(frameUtils.concatenateNalData(gops)); + + track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); + + this.trigger('processedGopsInfo', gops.map(function (gop) { + return { + pts: gop.pts, + dts: gop.dts, + byteLength: gop.byteLength + }; + })); + + // save all the nals in the last GOP into the gop cache + this.gopCache_.unshift({ + gop: gops.pop(), + pps: track.pps, + sps: track.sps + }); + + // Keep a maximum of 6 GOPs in the cache + this.gopCache_.length = Math.min(6, this.gopCache_.length); + + // Clear nalUnits + nalUnits = []; + + this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime); + this.trigger('timelineStartInfo', track.timelineStartInfo); + + moof = mp4Generator.moof(sequenceNumber, [track]); + + // it would be great to allocate this array up front instead of + // throwing away hundreds of media segment fragments + boxes = new Uint8Array(moof.byteLength + mdat.byteLength); + + // Bump the sequence number for next time + sequenceNumber++; + + boxes.set(moof); + boxes.set(mdat, moof.byteLength); + + this.trigger('data', { track: track, boxes: boxes }); + + this.resetStream_(); + + // Continue with the flush process now + this.trigger('done', 'VideoSegmentStream'); + }; + + this.resetStream_ = function () { + trackDecodeInfo.clearDtsInfo(track); + + // reset config and pps because they may differ across segments + // for instance, when we are rendition switching + config = undefined; + pps = undefined; + }; + + // Search for a candidate Gop for gop-fusion from the gop cache and + // return it or return null if no good candidate was found + this.getGopForFusion_ = function (nalUnit) { + var halfSecond = 45000, + + + // Half-a-second in a 90khz clock + allowableOverlap = 10000, + + + // About 3 frames @ 30fps + nearestDistance = Infinity, + dtsDistance, + nearestGopObj, + currentGop, + currentGopObj, + i; + + // Search for the GOP nearest to the beginning of this nal unit + for (i = 0; i < this.gopCache_.length; i++) { + currentGopObj = this.gopCache_[i]; + currentGop = currentGopObj.gop; + + // Reject Gops with different SPS or PPS + if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) { + continue; + } + + // Reject Gops that would require a negative baseMediaDecodeTime + if (currentGop.dts < track.timelineStartInfo.dts) { + continue; + } + + // The distance between the end of the gop and the start of the nalUnit + dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; + + // Only consider GOPS that start before the nal unit and end within + // a half-second of the nal unit + if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) { + + // Always use the closest GOP we found if there is more than + // one candidate + if (!nearestGopObj || nearestDistance > dtsDistance) { + nearestGopObj = currentGopObj; + nearestDistance = dtsDistance; + } + } + } + + if (nearestGopObj) { + return nearestGopObj.gop; + } + return null; + }; + + // trim gop list to the first gop found that has a matching pts with a gop in the list + // of gopsToAlignWith starting from the START of the list + this.alignGopsAtStart_ = function (gops) { + var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops; + + byteLength = gops.byteLength; + nalCount = gops.nalCount; + duration = gops.duration; + alignIndex = gopIndex = 0; + + while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) { + align = gopsToAlignWith[alignIndex]; + gop = gops[gopIndex]; + + if (align.pts === gop.pts) { + break; + } + + if (gop.pts > align.pts) { + // this current gop starts after the current gop we want to align on, so increment + // align index + alignIndex++; + continue; + } + + // current gop starts before the current gop we want to align on. so increment gop + // index + gopIndex++; + byteLength -= gop.byteLength; + nalCount -= gop.nalCount; + duration -= gop.duration; + } + + if (gopIndex === 0) { + // no gops to trim + return gops; + } + + if (gopIndex === gops.length) { + // all gops trimmed, skip appending all gops + return null; + } + + alignedGops = gops.slice(gopIndex); + alignedGops.byteLength = byteLength; + alignedGops.duration = duration; + alignedGops.nalCount = nalCount; + alignedGops.pts = alignedGops[0].pts; + alignedGops.dts = alignedGops[0].dts; + + return alignedGops; + }; + + // trim gop list to the first gop found that has a matching pts with a gop in the list + // of gopsToAlignWith starting from the END of the list + this.alignGopsAtEnd_ = function (gops) { + var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound; + + alignIndex = gopsToAlignWith.length - 1; + gopIndex = gops.length - 1; + alignEndIndex = null; + matchFound = false; + + while (alignIndex >= 0 && gopIndex >= 0) { + align = gopsToAlignWith[alignIndex]; + gop = gops[gopIndex]; + + if (align.pts === gop.pts) { + matchFound = true; + break; + } + + if (align.pts > gop.pts) { + alignIndex--; + continue; + } + + if (alignIndex === gopsToAlignWith.length - 1) { + // gop.pts is greater than the last alignment candidate. If no match is found + // by the end of this loop, we still want to append gops that come after this + // point + alignEndIndex = gopIndex; + } + + gopIndex--; + } + + if (!matchFound && alignEndIndex === null) { + return null; + } + + var trimIndex; + + if (matchFound) { + trimIndex = gopIndex; + } else { + trimIndex = alignEndIndex; + } + + if (trimIndex === 0) { + return gops; + } + + var alignedGops = gops.slice(trimIndex); + var metadata = alignedGops.reduce(function (total, gop) { + total.byteLength += gop.byteLength; + total.duration += gop.duration; + total.nalCount += gop.nalCount; + return total; + }, { byteLength: 0, duration: 0, nalCount: 0 }); + + alignedGops.byteLength = metadata.byteLength; + alignedGops.duration = metadata.duration; + alignedGops.nalCount = metadata.nalCount; + alignedGops.pts = alignedGops[0].pts; + alignedGops.dts = alignedGops[0].dts; + + return alignedGops; + }; + + this.alignGopsWith = function (newGopsToAlignWith) { + gopsToAlignWith = newGopsToAlignWith; + }; + }; + + _VideoSegmentStream.prototype = new stream(); + + /** + * A Stream that can combine multiple streams (ie. audio & video) + * into a single output segment for MSE. Also supports audio-only + * and video-only streams. + */ + _CoalesceStream = function CoalesceStream(options, metadataStream) { + // Number of Tracks per output segment + // If greater than 1, we combine multiple + // tracks into a single segment + this.numberOfTracks = 0; + this.metadataStream = metadataStream; + + if (typeof options.remux !== 'undefined') { + this.remuxTracks = !!options.remux; + } else { + this.remuxTracks = true; + } + + this.pendingTracks = []; + this.videoTrack = null; + this.pendingBoxes = []; + this.pendingCaptions = []; + this.pendingMetadata = []; + this.pendingBytes = 0; + this.emittedTracks = 0; + + _CoalesceStream.prototype.init.call(this); + + // Take output from multiple + this.push = function (output) { + // buffer incoming captions until the associated video segment + // finishes + if (output.text) { + return this.pendingCaptions.push(output); + } + // buffer incoming id3 tags until the final flush + if (output.frames) { + return this.pendingMetadata.push(output); + } + + // Add this track to the list of pending tracks and store + // important information required for the construction of + // the final segment + this.pendingTracks.push(output.track); + this.pendingBoxes.push(output.boxes); + this.pendingBytes += output.boxes.byteLength; + + if (output.track.type === 'video') { + this.videoTrack = output.track; + } + if (output.track.type === 'audio') { + this.audioTrack = output.track; + } + }; + }; + + _CoalesceStream.prototype = new stream(); + _CoalesceStream.prototype.flush = function (flushSource) { + var offset = 0, + event = { + captions: [], + captionStreams: {}, + metadata: [], + info: {} + }, + caption, + id3, + initSegment, + timelineStartPts = 0, + i; + + if (this.pendingTracks.length < this.numberOfTracks) { + if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') { + // Return because we haven't received a flush from a data-generating + // portion of the segment (meaning that we have only recieved meta-data + // or captions.) + return; + } else if (this.remuxTracks) { + // Return until we have enough tracks from the pipeline to remux (if we + // are remuxing audio and video into a single MP4) + return; + } else if (this.pendingTracks.length === 0) { + // In the case where we receive a flush without any data having been + // received we consider it an emitted track for the purposes of coalescing + // `done` events. + // We do this for the case where there is an audio and video track in the + // segment but no audio data. (seen in several playlists with alternate + // audio tracks and no audio present in the main TS segments.) + this.emittedTracks++; + + if (this.emittedTracks >= this.numberOfTracks) { + this.trigger('done'); + this.emittedTracks = 0; + } + return; + } + } + + if (this.videoTrack) { + timelineStartPts = this.videoTrack.timelineStartInfo.pts; + VIDEO_PROPERTIES.forEach(function (prop) { + event.info[prop] = this.videoTrack[prop]; + }, this); + } else if (this.audioTrack) { + timelineStartPts = this.audioTrack.timelineStartInfo.pts; + AUDIO_PROPERTIES.forEach(function (prop) { + event.info[prop] = this.audioTrack[prop]; + }, this); + } + + if (this.pendingTracks.length === 1) { + event.type = this.pendingTracks[0].type; + } else { + event.type = 'combined'; + } + + this.emittedTracks += this.pendingTracks.length; + + initSegment = mp4Generator.initSegment(this.pendingTracks); + + // Create a new typed array to hold the init segment + event.initSegment = new Uint8Array(initSegment.byteLength); + + // Create an init segment containing a moov + // and track definitions + event.initSegment.set(initSegment); + + // Create a new typed array to hold the moof+mdats + event.data = new Uint8Array(this.pendingBytes); + + // Append each moof+mdat (one per track) together + for (i = 0; i < this.pendingBoxes.length; i++) { + event.data.set(this.pendingBoxes[i], offset); + offset += this.pendingBoxes[i].byteLength; + } + + // Translate caption PTS times into second offsets into the + // video timeline for the segment, and add track info + for (i = 0; i < this.pendingCaptions.length; i++) { + caption = this.pendingCaptions[i]; + caption.startTime = caption.startPts - timelineStartPts; + caption.startTime /= 90e3; + caption.endTime = caption.endPts - timelineStartPts; + caption.endTime /= 90e3; + event.captionStreams[caption.stream] = true; + event.captions.push(caption); + } + + // Translate ID3 frame PTS times into second offsets into the + // video timeline for the segment + for (i = 0; i < this.pendingMetadata.length; i++) { + id3 = this.pendingMetadata[i]; + id3.cueTime = id3.pts - timelineStartPts; + id3.cueTime /= 90e3; + event.metadata.push(id3); + } + // We add this to every single emitted segment even though we only need + // it for the first + event.metadata.dispatchType = this.metadataStream.dispatchType; + + // Reset stream state + this.pendingTracks.length = 0; + this.videoTrack = null; + this.pendingBoxes.length = 0; + this.pendingCaptions.length = 0; + this.pendingBytes = 0; + this.pendingMetadata.length = 0; + + // Emit the built segment + this.trigger('data', event); + + // Only emit `done` if all tracks have been flushed and emitted + if (this.emittedTracks >= this.numberOfTracks) { + this.trigger('done'); + this.emittedTracks = 0; + } + }; + /** + * A Stream that expects MP2T binary data as input and produces + * corresponding media segments, suitable for use with Media Source + * Extension (MSE) implementations that support the ISO BMFF byte + * stream format, like Chrome. + */ + _Transmuxer = function Transmuxer(options) { + var self = this, + hasFlushed = true, + videoTrack, + audioTrack; + + _Transmuxer.prototype.init.call(this); + + options = options || {}; + this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0; + this.transmuxPipeline_ = {}; + + this.setupAacPipeline = function () { + var pipeline = {}; + this.transmuxPipeline_ = pipeline; + + pipeline.type = 'aac'; + pipeline.metadataStream = new m2ts_1.MetadataStream(); + + // set up the parsing pipeline + pipeline.aacStream = new aac(); + pipeline.audioTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('audio'); + pipeline.timedMetadataTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('timed-metadata'); + pipeline.adtsStream = new adts(); + pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream); + pipeline.headOfPipeline = pipeline.aacStream; + + pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream); + pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); + + pipeline.metadataStream.on('timestamp', function (frame) { + pipeline.aacStream.setTimestamp(frame.timeStamp); + }); + + pipeline.aacStream.on('data', function (data) { + if (data.type === 'timed-metadata' && !pipeline.audioSegmentStream) { + audioTrack = audioTrack || { + timelineStartInfo: { + baseMediaDecodeTime: self.baseMediaDecodeTime + }, + codec: 'adts', + type: 'audio' + }; + // hook up the audio segment stream to the first track with aac data + pipeline.coalesceStream.numberOfTracks++; + pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); + // Set up the final part of the audio pipeline + pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); + } + }); + + // Re-emit any data coming from the coalesce stream to the outside world + pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); + // Let the consumer know we have finished flushing the entire pipeline + pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done')); + }; + + this.setupTsPipeline = function () { + var pipeline = {}; + this.transmuxPipeline_ = pipeline; + + pipeline.type = 'ts'; + pipeline.metadataStream = new m2ts_1.MetadataStream(); + + // set up the parsing pipeline + pipeline.packetStream = new m2ts_1.TransportPacketStream(); + pipeline.parseStream = new m2ts_1.TransportParseStream(); + pipeline.elementaryStream = new m2ts_1.ElementaryStream(); + pipeline.videoTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('video'); + pipeline.audioTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('audio'); + pipeline.timedMetadataTimestampRolloverStream = new m2ts_1.TimestampRolloverStream('timed-metadata'); + pipeline.adtsStream = new adts(); + pipeline.h264Stream = new H264Stream(); + pipeline.captionStream = new m2ts_1.CaptionStream(); + pipeline.coalesceStream = new _CoalesceStream(options, pipeline.metadataStream); + pipeline.headOfPipeline = pipeline.packetStream; + + // disassemble MPEG2-TS packets into elementary streams + pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream); + + // !!THIS ORDER IS IMPORTANT!! + // demux the streams + pipeline.elementaryStream.pipe(pipeline.videoTimestampRolloverStream).pipe(pipeline.h264Stream); + pipeline.elementaryStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream); + + pipeline.elementaryStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); + + // Hook up CEA-608/708 caption stream + pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream); + + pipeline.elementaryStream.on('data', function (data) { + var i; + + if (data.type === 'metadata') { + i = data.tracks.length; + + // scan the tracks listed in the metadata + while (i--) { + if (!videoTrack && data.tracks[i].type === 'video') { + videoTrack = data.tracks[i]; + videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime; + } else if (!audioTrack && data.tracks[i].type === 'audio') { + audioTrack = data.tracks[i]; + audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime; + } + } + + // hook up the video segment stream to the first track with h264 data + if (videoTrack && !pipeline.videoSegmentStream) { + pipeline.coalesceStream.numberOfTracks++; + pipeline.videoSegmentStream = new _VideoSegmentStream(videoTrack, options); + + pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) { + // When video emits timelineStartInfo data after a flush, we forward that + // info to the AudioSegmentStream, if it exists, because video timeline + // data takes precedence. + if (audioTrack) { + audioTrack.timelineStartInfo = timelineStartInfo; + // On the first segment we trim AAC frames that exist before the + // very earliest DTS we have seen in video because Chrome will + // interpret any video track with a baseMediaDecodeTime that is + // non-zero as a gap. + pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts); + } + }); + + pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo')); + + pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) { + if (audioTrack) { + pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime); + } + }); + + // Set up the final part of the video pipeline + pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream); + } + + if (audioTrack && !pipeline.audioSegmentStream) { + // hook up the audio segment stream to the first track with aac data + pipeline.coalesceStream.numberOfTracks++; + pipeline.audioSegmentStream = new _AudioSegmentStream(audioTrack, options); + + // Set up the final part of the audio pipeline + pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); + } + } + }); + + // Re-emit any data coming from the coalesce stream to the outside world + pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); + // Let the consumer know we have finished flushing the entire pipeline + pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done')); + }; + + // hook up the segment streams once track metadata is delivered + this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) { + var pipeline = this.transmuxPipeline_; + + this.baseMediaDecodeTime = baseMediaDecodeTime; + if (audioTrack) { + audioTrack.timelineStartInfo.dts = undefined; + audioTrack.timelineStartInfo.pts = undefined; + trackDecodeInfo.clearDtsInfo(audioTrack); + audioTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime; + if (pipeline.audioTimestampRolloverStream) { + pipeline.audioTimestampRolloverStream.discontinuity(); + } + } + if (videoTrack) { + if (pipeline.videoSegmentStream) { + pipeline.videoSegmentStream.gopCache_ = []; + pipeline.videoTimestampRolloverStream.discontinuity(); + } + videoTrack.timelineStartInfo.dts = undefined; + videoTrack.timelineStartInfo.pts = undefined; + trackDecodeInfo.clearDtsInfo(videoTrack); + pipeline.captionStream.reset(); + videoTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime; + } + + if (pipeline.timedMetadataTimestampRolloverStream) { + pipeline.timedMetadataTimestampRolloverStream.discontinuity(); + } + }; + + this.setAudioAppendStart = function (timestamp) { + if (audioTrack) { + this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp); + } + }; + + this.alignGopsWith = function (gopsToAlignWith) { + if (videoTrack && this.transmuxPipeline_.videoSegmentStream) { + this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith); + } + }; + + // feed incoming data to the front of the parsing pipeline + this.push = function (data) { + if (hasFlushed) { + var isAac = isLikelyAacData(data); + + if (isAac && this.transmuxPipeline_.type !== 'aac') { + this.setupAacPipeline(); + } else if (!isAac && this.transmuxPipeline_.type !== 'ts') { + this.setupTsPipeline(); + } + hasFlushed = false; + } + this.transmuxPipeline_.headOfPipeline.push(data); + }; + + // flush any buffered data + this.flush = function () { + hasFlushed = true; + // Start at the top of the pipeline and flush all pending work + this.transmuxPipeline_.headOfPipeline.flush(); + }; + + // Caption data has to be reset when seeking outside buffered range + this.resetCaptions = function () { + if (this.transmuxPipeline_.captionStream) { + this.transmuxPipeline_.captionStream.reset(); + } + }; + }; + _Transmuxer.prototype = new stream(); + + var transmuxer = { + Transmuxer: _Transmuxer, + VideoSegmentStream: _VideoSegmentStream, + AudioSegmentStream: _AudioSegmentStream, + AUDIO_PROPERTIES: AUDIO_PROPERTIES, + VIDEO_PROPERTIES: VIDEO_PROPERTIES + }; + + var inspectMp4, + _textifyMp, + parseType$1 = probe$$1.parseType, + parseMp4Date = function parseMp4Date(seconds) { + return new Date(seconds * 1000 - 2082844800000); + }, + parseSampleFlags = function parseSampleFlags(flags) { + return { + isLeading: (flags[0] & 0x0c) >>> 2, + dependsOn: flags[0] & 0x03, + isDependedOn: (flags[1] & 0xc0) >>> 6, + hasRedundancy: (flags[1] & 0x30) >>> 4, + paddingValue: (flags[1] & 0x0e) >>> 1, + isNonSyncSample: flags[1] & 0x01, + degradationPriority: flags[2] << 8 | flags[3] + }; + }, + nalParse = function nalParse(avcStream) { + var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength), + result = [], + i, + length; + for (i = 0; i + 4 < avcStream.length; i += length) { + length = avcView.getUint32(i); + i += 4; + + // bail if this doesn't appear to be an H264 stream + if (length <= 0) { + result.push('<span style=\'color:red;\'>MALFORMED DATA</span>'); + continue; + } + + switch (avcStream[i] & 0x1F) { + case 0x01: + result.push('slice_layer_without_partitioning_rbsp'); + break; + case 0x05: + result.push('slice_layer_without_partitioning_rbsp_idr'); + break; + case 0x06: + result.push('sei_rbsp'); + break; + case 0x07: + result.push('seq_parameter_set_rbsp'); + break; + case 0x08: + result.push('pic_parameter_set_rbsp'); + break; + case 0x09: + result.push('access_unit_delimiter_rbsp'); + break; + default: + result.push('UNKNOWN NAL - ' + avcStream[i] & 0x1F); + break; + } + } + return result; + }, + + + // registry of handlers for individual mp4 box types + parse$$1 = { + // codingname, not a first-class box type. stsd entries share the + // same format as real boxes so the parsing infrastructure can be + // shared + avc1: function avc1(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + dataReferenceIndex: view.getUint16(6), + width: view.getUint16(24), + height: view.getUint16(26), + horizresolution: view.getUint16(28) + view.getUint16(30) / 16, + vertresolution: view.getUint16(32) + view.getUint16(34) / 16, + frameCount: view.getUint16(40), + depth: view.getUint16(74), + config: inspectMp4(data.subarray(78, data.byteLength)) + }; + }, + avcC: function avcC(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + configurationVersion: data[0], + avcProfileIndication: data[1], + profileCompatibility: data[2], + avcLevelIndication: data[3], + lengthSizeMinusOne: data[4] & 0x03, + sps: [], + pps: [] + }, + numOfSequenceParameterSets = data[5] & 0x1f, + numOfPictureParameterSets, + nalSize, + offset, + i; + + // iterate past any SPSs + offset = 6; + for (i = 0; i < numOfSequenceParameterSets; i++) { + nalSize = view.getUint16(offset); + offset += 2; + result.sps.push(new Uint8Array(data.subarray(offset, offset + nalSize))); + offset += nalSize; + } + // iterate past any PPSs + numOfPictureParameterSets = data[offset]; + offset++; + for (i = 0; i < numOfPictureParameterSets; i++) { + nalSize = view.getUint16(offset); + offset += 2; + result.pps.push(new Uint8Array(data.subarray(offset, offset + nalSize))); + offset += nalSize; + } + return result; + }, + btrt: function btrt(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + bufferSizeDB: view.getUint32(0), + maxBitrate: view.getUint32(4), + avgBitrate: view.getUint32(8) + }; + }, + esds: function esds(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + esId: data[6] << 8 | data[7], + streamPriority: data[8] & 0x1f, + decoderConfig: { + objectProfileIndication: data[11], + streamType: data[12] >>> 2 & 0x3f, + bufferSize: data[13] << 16 | data[14] << 8 | data[15], + maxBitrate: data[16] << 24 | data[17] << 16 | data[18] << 8 | data[19], + avgBitrate: data[20] << 24 | data[21] << 16 | data[22] << 8 | data[23], + decoderConfigDescriptor: { + tag: data[24], + length: data[25], + audioObjectType: data[26] >>> 3 & 0x1f, + samplingFrequencyIndex: (data[26] & 0x07) << 1 | data[27] >>> 7 & 0x01, + channelConfiguration: data[27] >>> 3 & 0x0f + } + } + }; + }, + ftyp: function ftyp(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + majorBrand: parseType$1(data.subarray(0, 4)), + minorVersion: view.getUint32(4), + compatibleBrands: [] + }, + i = 8; + while (i < data.byteLength) { + result.compatibleBrands.push(parseType$1(data.subarray(i, i + 4))); + i += 4; + } + return result; + }, + dinf: function dinf(data) { + return { + boxes: inspectMp4(data) + }; + }, + dref: function dref(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + dataReferences: inspectMp4(data.subarray(8)) + }; + }, + hdlr: function hdlr(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)), + handlerType: parseType$1(data.subarray(8, 12)), + name: '' + }, + i = 8; + + // parse out the name field + for (i = 24; i < data.byteLength; i++) { + if (data[i] === 0x00) { + // the name field is null-terminated + i++; + break; + } + result.name += String.fromCharCode(data[i]); + } + // decode UTF-8 to javascript's internal representation + // see http://ecmanaut.blogspot.com/2006/07/encoding-decoding-utf8-in-javascript.html + result.name = decodeURIComponent(escape(result.name)); + + return result; + }, + mdat: function mdat(data) { + return { + byteLength: data.byteLength, + nals: nalParse(data) + }; + }, + mdhd: function mdhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + i = 4, + language, + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)), + language: '' + }; + if (result.version === 1) { + i += 4; + result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 8; + result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 4; + result.timescale = view.getUint32(i); + i += 8; + result.duration = view.getUint32(i); // truncating top 4 bytes + } else { + result.creationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.modificationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.timescale = view.getUint32(i); + i += 4; + result.duration = view.getUint32(i); + } + i += 4; + // language is stored as an ISO-639-2/T code in an array of three 5-bit fields + // each field is the packed difference between its ASCII value and 0x60 + language = view.getUint16(i); + result.language += String.fromCharCode((language >> 10) + 0x60); + result.language += String.fromCharCode(((language & 0x03e0) >> 5) + 0x60); + result.language += String.fromCharCode((language & 0x1f) + 0x60); + + return result; + }, + mdia: function mdia(data) { + return { + boxes: inspectMp4(data) + }; + }, + mfhd: function mfhd(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sequenceNumber: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7] + }; + }, + minf: function minf(data) { + return { + boxes: inspectMp4(data) + }; + }, + // codingname, not a first-class box type. stsd entries share the + // same format as real boxes so the parsing infrastructure can be + // shared + mp4a: function mp4a(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + // 6 bytes reserved + dataReferenceIndex: view.getUint16(6), + // 4 + 4 bytes reserved + channelcount: view.getUint16(16), + samplesize: view.getUint16(18), + // 2 bytes pre_defined + // 2 bytes reserved + samplerate: view.getUint16(24) + view.getUint16(26) / 65536 + }; + + // if there are more bytes to process, assume this is an ISO/IEC + // 14496-14 MP4AudioSampleEntry and parse the ESDBox + if (data.byteLength > 28) { + result.streamDescriptor = inspectMp4(data.subarray(28))[0]; + } + return result; + }, + moof: function moof(data) { + return { + boxes: inspectMp4(data) + }; + }, + moov: function moov(data) { + return { + boxes: inspectMp4(data) + }; + }, + mvex: function mvex(data) { + return { + boxes: inspectMp4(data) + }; + }, + mvhd: function mvhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + i = 4, + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)) + }; + + if (result.version === 1) { + i += 4; + result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 8; + result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 4; + result.timescale = view.getUint32(i); + i += 8; + result.duration = view.getUint32(i); // truncating top 4 bytes + } else { + result.creationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.modificationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.timescale = view.getUint32(i); + i += 4; + result.duration = view.getUint32(i); + } + i += 4; + + // convert fixed-point, base 16 back to a number + result.rate = view.getUint16(i) + view.getUint16(i + 2) / 16; + i += 4; + result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8; + i += 2; + i += 2; + i += 2 * 4; + result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4)); + i += 9 * 4; + i += 6 * 4; + result.nextTrackId = view.getUint32(i); + return result; + }, + pdin: function pdin(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)), + rate: view.getUint32(4), + initialDelay: view.getUint32(8) + }; + }, + sdtp: function sdtp(data) { + var result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + samples: [] + }, + i; + + for (i = 4; i < data.byteLength; i++) { + result.samples.push({ + dependsOn: (data[i] & 0x30) >> 4, + isDependedOn: (data[i] & 0x0c) >> 2, + hasRedundancy: data[i] & 0x03 + }); + } + return result; + }, + sidx: function sidx(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + references: [], + referenceId: view.getUint32(4), + timescale: view.getUint32(8), + earliestPresentationTime: view.getUint32(12), + firstOffset: view.getUint32(16) + }, + referenceCount = view.getUint16(22), + i; + + for (i = 24; referenceCount; i += 12, referenceCount--) { + result.references.push({ + referenceType: (data[i] & 0x80) >>> 7, + referencedSize: view.getUint32(i) & 0x7FFFFFFF, + subsegmentDuration: view.getUint32(i + 4), + startsWithSap: !!(data[i + 8] & 0x80), + sapType: (data[i + 8] & 0x70) >>> 4, + sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF + }); + } + + return result; + }, + smhd: function smhd(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + balance: data[4] + data[5] / 256 + }; + }, + stbl: function stbl(data) { + return { + boxes: inspectMp4(data) + }; + }, + stco: function stco(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + chunkOffsets: [] + }, + entryCount = view.getUint32(4), + i; + for (i = 8; entryCount; i += 4, entryCount--) { + result.chunkOffsets.push(view.getUint32(i)); + } + return result; + }, + stsc: function stsc(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + entryCount = view.getUint32(4), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sampleToChunks: [] + }, + i; + for (i = 8; entryCount; i += 12, entryCount--) { + result.sampleToChunks.push({ + firstChunk: view.getUint32(i), + samplesPerChunk: view.getUint32(i + 4), + sampleDescriptionIndex: view.getUint32(i + 8) + }); + } + return result; + }, + stsd: function stsd(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sampleDescriptions: inspectMp4(data.subarray(8)) + }; + }, + stsz: function stsz(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + sampleSize: view.getUint32(4), + entries: [] + }, + i; + for (i = 12; i < data.byteLength; i += 4) { + result.entries.push(view.getUint32(i)); + } + return result; + }, + stts: function stts(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + timeToSamples: [] + }, + entryCount = view.getUint32(4), + i; + + for (i = 8; entryCount; i += 8, entryCount--) { + result.timeToSamples.push({ + sampleCount: view.getUint32(i), + sampleDelta: view.getUint32(i + 4) + }); + } + return result; + }, + styp: function styp(data) { + return parse$$1.ftyp(data); + }, + tfdt: function tfdt(data) { + var result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + baseMediaDecodeTime: data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7] + }; + if (result.version === 1) { + result.baseMediaDecodeTime *= Math.pow(2, 32); + result.baseMediaDecodeTime += data[8] << 24 | data[9] << 16 | data[10] << 8 | data[11]; + } + return result; + }, + tfhd: function tfhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + trackId: view.getUint32(4) + }, + baseDataOffsetPresent = result.flags[2] & 0x01, + sampleDescriptionIndexPresent = result.flags[2] & 0x02, + defaultSampleDurationPresent = result.flags[2] & 0x08, + defaultSampleSizePresent = result.flags[2] & 0x10, + defaultSampleFlagsPresent = result.flags[2] & 0x20, + durationIsEmpty = result.flags[0] & 0x010000, + defaultBaseIsMoof = result.flags[0] & 0x020000, + i; + + i = 8; + if (baseDataOffsetPresent) { + i += 4; // truncate top 4 bytes + // FIXME: should we read the full 64 bits? + result.baseDataOffset = view.getUint32(12); + i += 4; + } + if (sampleDescriptionIndexPresent) { + result.sampleDescriptionIndex = view.getUint32(i); + i += 4; + } + if (defaultSampleDurationPresent) { + result.defaultSampleDuration = view.getUint32(i); + i += 4; + } + if (defaultSampleSizePresent) { + result.defaultSampleSize = view.getUint32(i); + i += 4; + } + if (defaultSampleFlagsPresent) { + result.defaultSampleFlags = view.getUint32(i); + } + if (durationIsEmpty) { + result.durationIsEmpty = true; + } + if (!baseDataOffsetPresent && defaultBaseIsMoof) { + result.baseDataOffsetIsMoof = true; + } + return result; + }, + tkhd: function tkhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength), + i = 4, + result = { + version: view.getUint8(0), + flags: new Uint8Array(data.subarray(1, 4)) + }; + if (result.version === 1) { + i += 4; + result.creationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 8; + result.modificationTime = parseMp4Date(view.getUint32(i)); // truncating top 4 bytes + i += 4; + result.trackId = view.getUint32(i); + i += 4; + i += 8; + result.duration = view.getUint32(i); // truncating top 4 bytes + } else { + result.creationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.modificationTime = parseMp4Date(view.getUint32(i)); + i += 4; + result.trackId = view.getUint32(i); + i += 4; + i += 4; + result.duration = view.getUint32(i); + } + i += 4; + i += 2 * 4; + result.layer = view.getUint16(i); + i += 2; + result.alternateGroup = view.getUint16(i); + i += 2; + // convert fixed-point, base 16 back to a number + result.volume = view.getUint8(i) + view.getUint8(i + 1) / 8; + i += 2; + i += 2; + result.matrix = new Uint32Array(data.subarray(i, i + 9 * 4)); + i += 9 * 4; + result.width = view.getUint16(i) + view.getUint16(i + 2) / 16; + i += 4; + result.height = view.getUint16(i) + view.getUint16(i + 2) / 16; + return result; + }, + traf: function traf(data) { + return { + boxes: inspectMp4(data) + }; + }, + trak: function trak(data) { + return { + boxes: inspectMp4(data) + }; + }, + trex: function trex(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + trackId: view.getUint32(4), + defaultSampleDescriptionIndex: view.getUint32(8), + defaultSampleDuration: view.getUint32(12), + defaultSampleSize: view.getUint32(16), + sampleDependsOn: data[20] & 0x03, + sampleIsDependedOn: (data[21] & 0xc0) >> 6, + sampleHasRedundancy: (data[21] & 0x30) >> 4, + samplePaddingValue: (data[21] & 0x0e) >> 1, + sampleIsDifferenceSample: !!(data[21] & 0x01), + sampleDegradationPriority: view.getUint16(22) + }; + }, + trun: function trun(data) { + var result = { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + samples: [] + }, + view = new DataView(data.buffer, data.byteOffset, data.byteLength), + + + // Flag interpretation + dataOffsetPresent = result.flags[2] & 0x01, + + + // compare with 2nd byte of 0x1 + firstSampleFlagsPresent = result.flags[2] & 0x04, + + + // compare with 2nd byte of 0x4 + sampleDurationPresent = result.flags[1] & 0x01, + + + // compare with 2nd byte of 0x100 + sampleSizePresent = result.flags[1] & 0x02, + + + // compare with 2nd byte of 0x200 + sampleFlagsPresent = result.flags[1] & 0x04, + + + // compare with 2nd byte of 0x400 + sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08, + + + // compare with 2nd byte of 0x800 + sampleCount = view.getUint32(4), + offset = 8, + sample; + + if (dataOffsetPresent) { + // 32 bit signed integer + result.dataOffset = view.getInt32(offset); + offset += 4; + } + + // Overrides the flags for the first sample only. The order of + // optional values will be: duration, size, compositionTimeOffset + if (firstSampleFlagsPresent && sampleCount) { + sample = { + flags: parseSampleFlags(data.subarray(offset, offset + 4)) + }; + offset += 4; + if (sampleDurationPresent) { + sample.duration = view.getUint32(offset); + offset += 4; + } + if (sampleSizePresent) { + sample.size = view.getUint32(offset); + offset += 4; + } + if (sampleCompositionTimeOffsetPresent) { + // Note: this should be a signed int if version is 1 + sample.compositionTimeOffset = view.getUint32(offset); + offset += 4; + } + result.samples.push(sample); + sampleCount--; + } + + while (sampleCount--) { + sample = {}; + if (sampleDurationPresent) { + sample.duration = view.getUint32(offset); + offset += 4; + } + if (sampleSizePresent) { + sample.size = view.getUint32(offset); + offset += 4; + } + if (sampleFlagsPresent) { + sample.flags = parseSampleFlags(data.subarray(offset, offset + 4)); + offset += 4; + } + if (sampleCompositionTimeOffsetPresent) { + // Note: this should be a signed int if version is 1 + sample.compositionTimeOffset = view.getUint32(offset); + offset += 4; + } + result.samples.push(sample); + } + return result; + }, + 'url ': function url(data) { + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)) + }; + }, + vmhd: function vmhd(data) { + var view = new DataView(data.buffer, data.byteOffset, data.byteLength); + return { + version: data[0], + flags: new Uint8Array(data.subarray(1, 4)), + graphicsmode: view.getUint16(4), + opcolor: new Uint16Array([view.getUint16(6), view.getUint16(8), view.getUint16(10)]) + }; + } + }; + + /** + * Return a javascript array of box objects parsed from an ISO base + * media file. + * @param data {Uint8Array} the binary data of the media to be inspected + * @return {array} a javascript array of potentially nested box objects + */ + inspectMp4 = function inspectMp4(data) { + var i = 0, + result = [], + view, + size, + type, + end, + box; + + // Convert data from Uint8Array to ArrayBuffer, to follow Dataview API + var ab = new ArrayBuffer(data.length); + var v = new Uint8Array(ab); + for (var z = 0; z < data.length; ++z) { + v[z] = data[z]; + } + view = new DataView(ab); + + while (i < data.byteLength) { + // parse box data + size = view.getUint32(i); + type = parseType$1(data.subarray(i + 4, i + 8)); + end = size > 1 ? i + size : data.byteLength; + + // parse type-specific data + box = (parse$$1[type] || function (data) { + return { + data: data + }; + })(data.subarray(i + 8, end)); + box.size = size; + box.type = type; + + // store this box and move to the next + result.push(box); + i = end; + } + return result; + }; + + /** + * Returns a textual representation of the javascript represtentation + * of an MP4 file. You can use it as an alternative to + * JSON.stringify() to compare inspected MP4s. + * @param inspectedMp4 {array} the parsed array of boxes in an MP4 + * file + * @param depth {number} (optional) the number of ancestor boxes of + * the elements of inspectedMp4. Assumed to be zero if unspecified. + * @return {string} a text representation of the parsed MP4 + */ + _textifyMp = function textifyMp4(inspectedMp4, depth) { + var indent; + depth = depth || 0; + indent = new Array(depth * 2 + 1).join(' '); + + // iterate over all the boxes + return inspectedMp4.map(function (box, index) { + + // list the box type first at the current indentation level + return indent + box.type + '\n' + + + // the type is already included and handle child boxes separately + Object.keys(box).filter(function (key) { + return key !== 'type' && key !== 'boxes'; + + // output all the box properties + }).map(function (key) { + var prefix = indent + ' ' + key + ': ', + value = box[key]; + + // print out raw bytes as hexademical + if (value instanceof Uint8Array || value instanceof Uint32Array) { + var bytes = Array.prototype.slice.call(new Uint8Array(value.buffer, value.byteOffset, value.byteLength)).map(function (byte) { + return ' ' + ('00' + byte.toString(16)).slice(-2); + }).join('').match(/.{1,24}/g); + if (!bytes) { + return prefix + '<>'; + } + if (bytes.length === 1) { + return prefix + '<' + bytes.join('').slice(1) + '>'; + } + return prefix + '<\n' + bytes.map(function (line) { + return indent + ' ' + line; + }).join('\n') + '\n' + indent + ' >'; + } + + // stringify generic objects + return prefix + JSON.stringify(value, null, 2).split('\n').map(function (line, index) { + if (index === 0) { + return line; + } + return indent + ' ' + line; + }).join('\n'); + }).join('\n') + ( + + // recursively textify the child boxes + box.boxes ? '\n' + _textifyMp(box.boxes, depth + 1) : ''); + }).join('\n'); + }; + + var mp4Inspector = { + inspect: inspectMp4, + textify: _textifyMp, + parseTfdt: parse$$1.tfdt, + parseHdlr: parse$$1.hdlr, + parseTfhd: parse$$1.tfhd, + parseTrun: parse$$1.trun + }; + + var discardEmulationPreventionBytes$1 = captionPacketParser.discardEmulationPreventionBytes; + var CaptionStream$1 = captionStream.CaptionStream; + + /** + * Maps an offset in the mdat to a sample based on the the size of the samples. + * Assumes that `parseSamples` has been called first. + * + * @param {Number} offset - The offset into the mdat + * @param {Object[]} samples - An array of samples, parsed using `parseSamples` + * @return {?Object} The matching sample, or null if no match was found. + * + * @see ISO-BMFF-12/2015, Section 8.8.8 + **/ + var mapToSample = function mapToSample(offset, samples) { + var approximateOffset = offset; + + for (var i = 0; i < samples.length; i++) { + var sample = samples[i]; + + if (approximateOffset < sample.size) { + return sample; + } + + approximateOffset -= sample.size; + } + + return null; + }; + + /** + * Finds SEI nal units contained in a Media Data Box. + * Assumes that `parseSamples` has been called first. + * + * @param {Uint8Array} avcStream - The bytes of the mdat + * @param {Object[]} samples - The samples parsed out by `parseSamples` + * @param {Number} trackId - The trackId of this video track + * @return {Object[]} seiNals - the parsed SEI NALUs found. + * The contents of the seiNal should match what is expected by + * CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts) + * + * @see ISO-BMFF-12/2015, Section 8.1.1 + * @see Rec. ITU-T H.264, 7.3.2.3.1 + **/ + var findSeiNals = function findSeiNals(avcStream, samples, trackId) { + var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength), + result = [], + seiNal, + i, + length, + lastMatchedSample; + + for (i = 0; i + 4 < avcStream.length; i += length) { + length = avcView.getUint32(i); + i += 4; + + // Bail if this doesn't appear to be an H264 stream + if (length <= 0) { + continue; + } + + switch (avcStream[i] & 0x1F) { + case 0x06: + var data = avcStream.subarray(i + 1, i + 1 + length); + var matchingSample = mapToSample(i, samples); + + seiNal = { + nalUnitType: 'sei_rbsp', + size: length, + data: data, + escapedRBSP: discardEmulationPreventionBytes$1(data), + trackId: trackId + }; + + if (matchingSample) { + seiNal.pts = matchingSample.pts; + seiNal.dts = matchingSample.dts; + lastMatchedSample = matchingSample; + } else { + // If a matching sample cannot be found, use the last + // sample's values as they should be as close as possible + seiNal.pts = lastMatchedSample.pts; + seiNal.dts = lastMatchedSample.dts; + } + + result.push(seiNal); + break; + default: + break; + } + } + + return result; + }; + + /** + * Parses sample information out of Track Run Boxes and calculates + * the absolute presentation and decode timestamps of each sample. + * + * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed + * @param {Number} baseMediaDecodeTime - base media decode time from tfdt + @see ISO-BMFF-12/2015, Section 8.8.12 + * @param {Object} tfhd - The parsed Track Fragment Header + * @see inspect.parseTfhd + * @return {Object[]} the parsed samples + * + * @see ISO-BMFF-12/2015, Section 8.8.8 + **/ + var parseSamples = function parseSamples(truns, baseMediaDecodeTime, tfhd) { + var currentDts = baseMediaDecodeTime; + var defaultSampleDuration = tfhd.defaultSampleDuration || 0; + var defaultSampleSize = tfhd.defaultSampleSize || 0; + var trackId = tfhd.trackId; + var allSamples = []; + + truns.forEach(function (trun) { + // Note: We currently do not parse the sample table as well + // as the trun. It's possible some sources will require this. + // moov > trak > mdia > minf > stbl + var trackRun = mp4Inspector.parseTrun(trun); + var samples = trackRun.samples; + + samples.forEach(function (sample) { + if (sample.duration === undefined) { + sample.duration = defaultSampleDuration; + } + if (sample.size === undefined) { + sample.size = defaultSampleSize; + } + sample.trackId = trackId; + sample.dts = currentDts; + if (sample.compositionTimeOffset === undefined) { + sample.compositionTimeOffset = 0; + } + sample.pts = currentDts + sample.compositionTimeOffset; + + currentDts += sample.duration; + }); + + allSamples = allSamples.concat(samples); + }); + + return allSamples; + }; + + /** + * Parses out caption nals from an FMP4 segment's video tracks. + * + * @param {Uint8Array} segment - The bytes of a single segment + * @param {Number} videoTrackId - The trackId of a video track in the segment + * @return {Object.<Number, Object[]>} A mapping of video trackId to + * a list of seiNals found in that track + **/ + var parseCaptionNals = function parseCaptionNals(segment, videoTrackId) { + // To get the samples + var trafs = probe$$1.findBox(segment, ['moof', 'traf']); + // To get SEI NAL units + var mdats = probe$$1.findBox(segment, ['mdat']); + var captionNals = {}; + var mdatTrafPairs = []; + + // Pair up each traf with a mdat as moofs and mdats are in pairs + mdats.forEach(function (mdat, index) { + var matchingTraf = trafs[index]; + mdatTrafPairs.push({ + mdat: mdat, + traf: matchingTraf + }); + }); + + mdatTrafPairs.forEach(function (pair) { + var mdat = pair.mdat; + var traf = pair.traf; + var tfhd = probe$$1.findBox(traf, ['tfhd']); + // Exactly 1 tfhd per traf + var headerInfo = mp4Inspector.parseTfhd(tfhd[0]); + var trackId = headerInfo.trackId; + var tfdt = probe$$1.findBox(traf, ['tfdt']); + // Either 0 or 1 tfdt per traf + var baseMediaDecodeTime = tfdt.length > 0 ? mp4Inspector.parseTfdt(tfdt[0]).baseMediaDecodeTime : 0; + var truns = probe$$1.findBox(traf, ['trun']); + var samples; + var seiNals; + + // Only parse video data for the chosen video track + if (videoTrackId === trackId && truns.length > 0) { + samples = parseSamples(truns, baseMediaDecodeTime, headerInfo); + + seiNals = findSeiNals(mdat, samples, trackId); + + if (!captionNals[trackId]) { + captionNals[trackId] = []; + } + + captionNals[trackId] = captionNals[trackId].concat(seiNals); + } + }); + + return captionNals; + }; + + /** + * Parses out inband captions from an MP4 container and returns + * caption objects that can be used by WebVTT and the TextTrack API. + * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue + * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack + * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first + * + * @param {Uint8Array} segment - The fmp4 segment containing embedded captions + * @param {Number} trackId - The id of the video track to parse + * @param {Number} timescale - The timescale for the video track from the init segment + * + * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks + * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds + * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds + * @return {String} parsedCaptions[].text - The visible content of the caption + **/ + var parseEmbeddedCaptions = function parseEmbeddedCaptions(segment, trackId, timescale) { + var seiNals; + + if (!trackId) { + return null; + } + + seiNals = parseCaptionNals(segment, trackId); + + return { + seiNals: seiNals[trackId], + timescale: timescale + }; + }; + + /** + * Converts SEI NALUs into captions that can be used by video.js + **/ + var CaptionParser$$1 = function CaptionParser$$1() { + var isInitialized = false; + var captionStream$$1; + + // Stores segments seen before trackId and timescale are set + var segmentCache; + // Stores video track ID of the track being parsed + var trackId; + // Stores the timescale of the track being parsed + var timescale; + // Stores captions parsed so far + var parsedCaptions; + + /** + * A method to indicate whether a CaptionParser has been initalized + * @returns {Boolean} + **/ + this.isInitialized = function () { + return isInitialized; + }; + + /** + * Initializes the underlying CaptionStream, SEI NAL parsing + * and management, and caption collection + **/ + this.init = function () { + captionStream$$1 = new CaptionStream$1(); + isInitialized = true; + + // Collect dispatched captions + captionStream$$1.on('data', function (event) { + // Convert to seconds in the source's timescale + event.startTime = event.startPts / timescale; + event.endTime = event.endPts / timescale; + + parsedCaptions.captions.push(event); + parsedCaptions.captionStreams[event.stream] = true; + }); + }; + + /** + * Determines if a new video track will be selected + * or if the timescale changed + * @return {Boolean} + **/ + this.isNewInit = function (videoTrackIds, timescales) { + if (videoTrackIds && videoTrackIds.length === 0 || timescales && (typeof timescales === 'undefined' ? 'undefined' : _typeof(timescales)) === 'object' && Object.keys(timescales).length === 0) { + return false; + } + + return trackId !== videoTrackIds[0] || timescale !== timescales[trackId]; + }; + + /** + * Parses out SEI captions and interacts with underlying + * CaptionStream to return dispatched captions + * + * @param {Uint8Array} segment - The fmp4 segment containing embedded captions + * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment + * @param {Object.<Number, Number>} timescales - The timescales found in the init segment + * @see parseEmbeddedCaptions + * @see m2ts/caption-stream.js + **/ + this.parse = function (segment, videoTrackIds, timescales) { + var parsedData; + + if (!this.isInitialized()) { + return null; + + // This is not likely to be a video segment + } else if (!videoTrackIds || !timescales) { + return null; + } else if (this.isNewInit(videoTrackIds, timescales)) { + // Use the first video track only as there is no + // mechanism to switch to other video tracks + trackId = videoTrackIds[0]; + timescale = timescales[trackId]; + + // If an init segment has not been seen yet, hold onto segment + // data until we have one + } else if (!trackId || !timescale) { + segmentCache.push(segment); + return null; + } + + // Now that a timescale and trackId is set, parse cached segments + while (segmentCache.length > 0) { + var cachedSegment = segmentCache.shift(); + + this.parse(cachedSegment, videoTrackIds, timescales); + } + + parsedData = parseEmbeddedCaptions(segment, trackId, timescale); + + if (parsedData === null || !parsedData.seiNals) { + return null; + } + + this.pushNals(parsedData.seiNals); + // Force the parsed captions to be dispatched + this.flushStream(); + + return parsedCaptions; + }; + + /** + * Pushes SEI NALUs onto CaptionStream + * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals` + * Assumes that `parseCaptionNals` has been called first + * @see m2ts/caption-stream.js + **/ + this.pushNals = function (nals) { + if (!this.isInitialized() || !nals || nals.length === 0) { + return null; + } + + nals.forEach(function (nal) { + captionStream$$1.push(nal); + }); + }; + + /** + * Flushes underlying CaptionStream to dispatch processed, displayable captions + * @see m2ts/caption-stream.js + **/ + this.flushStream = function () { + if (!this.isInitialized()) { + return null; + } + + captionStream$$1.flush(); + }; + + /** + * Reset caption buckets for new data + **/ + this.clearParsedCaptions = function () { + parsedCaptions.captions = []; + parsedCaptions.captionStreams = {}; + }; + + /** + * Resets underlying CaptionStream + * @see m2ts/caption-stream.js + **/ + this.resetCaptionStream = function () { + if (!this.isInitialized()) { + return null; + } + + captionStream$$1.reset(); + }; + + /** + * Convenience method to clear all captions flushed from the + * CaptionStream and still being parsed + * @see m2ts/caption-stream.js + **/ + this.clearAllCaptions = function () { + this.clearParsedCaptions(); + this.resetCaptionStream(); + }; + + /** + * Reset caption parser + **/ + this.reset = function () { + segmentCache = []; + trackId = null; + timescale = null; + + if (!parsedCaptions) { + parsedCaptions = { + captions: [], + // CC1, CC2, CC3, CC4 + captionStreams: {} + }; + } else { + this.clearParsedCaptions(); + } + + this.resetCaptionStream(); + }; + + this.reset(); + }; + + var captionParser = CaptionParser$$1; + + var mp4 = { + generator: mp4Generator, + probe: probe$$1, + Transmuxer: transmuxer.Transmuxer, + AudioSegmentStream: transmuxer.AudioSegmentStream, + VideoSegmentStream: transmuxer.VideoSegmentStream, + CaptionParser: captionParser + }; + + var classCallCheck$$1 = function classCallCheck$$1(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + }; + + var createClass$$1 = function () { + function defineProperties(target, props) { + for (var i = 0; i < props.length; i++) { + var descriptor = props[i]; + descriptor.enumerable = descriptor.enumerable || false; + descriptor.configurable = true; + if ("value" in descriptor) descriptor.writable = true; + Object.defineProperty(target, descriptor.key, descriptor); + } + } + + return function (Constructor, protoProps, staticProps) { + if (protoProps) defineProperties(Constructor.prototype, protoProps); + if (staticProps) defineProperties(Constructor, staticProps); + return Constructor; + }; + }(); + + /** + * @file transmuxer-worker.js + */ + + /** + * Re-emits transmuxer events by converting them into messages to the + * world outside the worker. + * + * @param {Object} transmuxer the transmuxer to wire events on + * @private + */ + var wireTransmuxerEvents = function wireTransmuxerEvents(self, transmuxer) { + transmuxer.on('data', function (segment) { + // transfer ownership of the underlying ArrayBuffer + // instead of doing a copy to save memory + // ArrayBuffers are transferable but generic TypedArrays are not + // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects) + var initArray = segment.initSegment; + + segment.initSegment = { + data: initArray.buffer, + byteOffset: initArray.byteOffset, + byteLength: initArray.byteLength + }; + + var typedArray = segment.data; + + segment.data = typedArray.buffer; + self.postMessage({ + action: 'data', + segment: segment, + byteOffset: typedArray.byteOffset, + byteLength: typedArray.byteLength + }, [segment.data]); + }); + + if (transmuxer.captionStream) { + transmuxer.captionStream.on('data', function (caption) { + self.postMessage({ + action: 'caption', + data: caption + }); + }); + } + + transmuxer.on('done', function (data) { + self.postMessage({ action: 'done' }); + }); + + transmuxer.on('gopInfo', function (gopInfo) { + self.postMessage({ + action: 'gopInfo', + gopInfo: gopInfo + }); + }); + }; + + /** + * All incoming messages route through this hash. If no function exists + * to handle an incoming message, then we ignore the message. + * + * @class MessageHandlers + * @param {Object} options the options to initialize with + */ + + var MessageHandlers = function () { + function MessageHandlers(self, options) { + classCallCheck$$1(this, MessageHandlers); + + this.options = options || {}; + this.self = self; + this.init(); + } + + /** + * initialize our web worker and wire all the events. + */ + + createClass$$1(MessageHandlers, [{ + key: 'init', + value: function init() { + if (this.transmuxer) { + this.transmuxer.dispose(); + } + this.transmuxer = new mp4.Transmuxer(this.options); + wireTransmuxerEvents(this.self, this.transmuxer); + } + + /** + * Adds data (a ts segment) to the start of the transmuxer pipeline for + * processing. + * + * @param {ArrayBuffer} data data to push into the muxer + */ + + }, { + key: 'push', + value: function push(data) { + // Cast array buffer to correct type for transmuxer + var segment = new Uint8Array(data.data, data.byteOffset, data.byteLength); + + this.transmuxer.push(segment); + } + + /** + * Recreate the transmuxer so that the next segment added via `push` + * start with a fresh transmuxer. + */ + + }, { + key: 'reset', + value: function reset() { + this.init(); + } + + /** + * Set the value that will be used as the `baseMediaDecodeTime` time for the + * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime` + * set relative to the first based on the PTS values. + * + * @param {Object} data used to set the timestamp offset in the muxer + */ + + }, { + key: 'setTimestampOffset', + value: function setTimestampOffset(data) { + var timestampOffset = data.timestampOffset || 0; + + this.transmuxer.setBaseMediaDecodeTime(Math.round(timestampOffset * 90000)); + } + }, { + key: 'setAudioAppendStart', + value: function setAudioAppendStart(data) { + this.transmuxer.setAudioAppendStart(Math.ceil(data.appendStart * 90000)); + } + + /** + * Forces the pipeline to finish processing the last segment and emit it's + * results. + * + * @param {Object} data event data, not really used + */ + + }, { + key: 'flush', + value: function flush(data) { + this.transmuxer.flush(); + } + }, { + key: 'resetCaptions', + value: function resetCaptions() { + this.transmuxer.resetCaptions(); + } + }, { + key: 'alignGopsWith', + value: function alignGopsWith(data) { + this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice()); + } + }]); + return MessageHandlers; + }(); + + /** + * Our web wroker interface so that things can talk to mux.js + * that will be running in a web worker. the scope is passed to this by + * webworkify. + * + * @param {Object} self the scope for the web worker + */ + + var TransmuxerWorker = function TransmuxerWorker(self) { + self.onmessage = function (event) { + if (event.data.action === 'init' && event.data.options) { + this.messageHandlers = new MessageHandlers(self, event.data.options); + return; + } + + if (!this.messageHandlers) { + this.messageHandlers = new MessageHandlers(self); + } + + if (event.data && event.data.action && event.data.action !== 'init') { + if (this.messageHandlers[event.data.action]) { + this.messageHandlers[event.data.action](event.data); + } + } + }; + }; + + var transmuxerWorker = new TransmuxerWorker(self); + + return transmuxerWorker; + }(); + }); + + /** + * @file - codecs.js - Handles tasks regarding codec strings such as translating them to + * codec strings, or translating codec strings into objects that can be examined. + */ + + // Default codec parameters if none were provided for video and/or audio + var defaultCodecs = { + videoCodec: 'avc1', + videoObjectTypeIndicator: '.4d400d', + // AAC-LC + audioProfile: '2' + }; + + /** + * Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard + * `avc1.<hhhhhh>` + * + * @param {Array} codecs an array of codec strings to fix + * @return {Array} the translated codec array + * @private + */ + var translateLegacyCodecs = function translateLegacyCodecs(codecs) { + return codecs.map(function (codec) { + return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) { + var profileHex = ('00' + Number(profile).toString(16)).slice(-2); + var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2); + + return 'avc1.' + profileHex + '00' + avcLevelHex; + }); + }); + }; + + /** + * Parses a codec string to retrieve the number of codecs specified, + * the video codec and object type indicator, and the audio profile. + */ + + var parseCodecs = function parseCodecs() { + var codecs = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ''; + + var result = { + codecCount: 0 + }; + var parsed = void 0; + + result.codecCount = codecs.split(',').length; + result.codecCount = result.codecCount || 2; + + // parse the video codec + parsed = /(^|\s|,)+(avc[13])([^ ,]*)/i.exec(codecs); + if (parsed) { + result.videoCodec = parsed[2]; + result.videoObjectTypeIndicator = parsed[3]; + } + + // parse the last field of the audio codec + result.audioProfile = /(^|\s|,)+mp4a.[0-9A-Fa-f]+\.([0-9A-Fa-f]+)/i.exec(codecs); + result.audioProfile = result.audioProfile && result.audioProfile[2]; + + return result; + }; + + /** + * Replace codecs in the codec string with the old apple-style `avc1.<dd>.<dd>` to the + * standard `avc1.<hhhhhh>`. + * + * @param codecString {String} the codec string + * @return {String} the codec string with old apple-style codecs replaced + * + * @private + */ + var mapLegacyAvcCodecs = function mapLegacyAvcCodecs(codecString) { + return codecString.replace(/avc1\.(\d+)\.(\d+)/i, function (match) { + return translateLegacyCodecs([match])[0]; + }); + }; + + /** + * Build a media mime-type string from a set of parameters + * @param {String} type either 'audio' or 'video' + * @param {String} container either 'mp2t' or 'mp4' + * @param {Array} codecs an array of codec strings to add + * @return {String} a valid media mime-type + */ + var makeMimeTypeString = function makeMimeTypeString(type, container, codecs) { + // The codecs array is filtered so that falsey values are + // dropped and don't cause Array#join to create spurious + // commas + return type + '/' + container + '; codecs="' + codecs.filter(function (c) { + return !!c; + }).join(', ') + '"'; + }; + + /** + * Returns the type container based on information in the playlist + * @param {Playlist} media the current media playlist + * @return {String} a valid media container type + */ + var getContainerType = function getContainerType(media) { + // An initialization segment means the media playlist is an iframe + // playlist or is using the mp4 container. We don't currently + // support iframe playlists, so assume this is signalling mp4 + // fragments. + if (media.segments && media.segments.length && media.segments[0].map) { + return 'mp4'; + } + return 'mp2t'; + }; + + /** + * Returns a set of codec strings parsed from the playlist or the default + * codec strings if no codecs were specified in the playlist + * @param {Playlist} media the current media playlist + * @return {Object} an object with the video and audio codecs + */ + var getCodecs = function getCodecs(media) { + // if the codecs were explicitly specified, use them instead of the + // defaults + var mediaAttributes = media.attributes || {}; + + if (mediaAttributes.CODECS) { + return parseCodecs(mediaAttributes.CODECS); + } + return defaultCodecs; + }; + + var audioProfileFromDefault = function audioProfileFromDefault(master, audioGroupId) { + if (!master.mediaGroups.AUDIO || !audioGroupId) { + return null; + } + + var audioGroup = master.mediaGroups.AUDIO[audioGroupId]; + + if (!audioGroup) { + return null; + } + + for (var name in audioGroup) { + var audioType = audioGroup[name]; + + if (audioType.default && audioType.playlists) { + // codec should be the same for all playlists within the audio type + return parseCodecs(audioType.playlists[0].attributes.CODECS).audioProfile; + } + } + + return null; + }; + + /** + * Calculates the MIME type strings for a working configuration of + * SourceBuffers to play variant streams in a master playlist. If + * there is no possible working configuration, an empty array will be + * returned. + * + * @param master {Object} the m3u8 object for the master playlist + * @param media {Object} the m3u8 object for the variant playlist + * @return {Array} the MIME type strings. If the array has more than + * one entry, the first element should be applied to the video + * SourceBuffer and the second to the audio SourceBuffer. + * + * @private + */ + var mimeTypesForPlaylist = function mimeTypesForPlaylist(master, media) { + var containerType = getContainerType(media); + var codecInfo = getCodecs(media); + var mediaAttributes = media.attributes || {}; + // Default condition for a traditional HLS (no demuxed audio/video) + var isMuxed = true; + var isMaat = false; + + if (!media) { + // Not enough information + return []; + } + + if (master.mediaGroups.AUDIO && mediaAttributes.AUDIO) { + var audioGroup = master.mediaGroups.AUDIO[mediaAttributes.AUDIO]; + + // Handle the case where we are in a multiple-audio track scenario + if (audioGroup) { + isMaat = true; + // Start with the everything demuxed then... + isMuxed = false; + // ...check to see if any audio group tracks are muxed (ie. lacking a uri) + for (var groupId in audioGroup) { + // either a uri is present (if the case of HLS and an external playlist), or + // playlists is present (in the case of DASH where we don't have external audio + // playlists) + if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) { + isMuxed = true; + break; + } + } + } + } + + // HLS with multiple-audio tracks must always get an audio codec. + // Put another way, there is no way to have a video-only multiple-audio HLS! + if (isMaat && !codecInfo.audioProfile) { + if (!isMuxed) { + // It is possible for codecs to be specified on the audio media group playlist but + // not on the rendition playlist. This is mostly the case for DASH, where audio and + // video are always separate (and separately specified). + codecInfo.audioProfile = audioProfileFromDefault(master, mediaAttributes.AUDIO); + } + + if (!codecInfo.audioProfile) { + videojs$1.log.warn('Multiple audio tracks present but no audio codec string is specified. ' + 'Attempting to use the default audio codec (mp4a.40.2)'); + codecInfo.audioProfile = defaultCodecs.audioProfile; + } + } + + // Generate the final codec strings from the codec object generated above + var codecStrings = {}; + + if (codecInfo.videoCodec) { + codecStrings.video = '' + codecInfo.videoCodec + codecInfo.videoObjectTypeIndicator; + } + + if (codecInfo.audioProfile) { + codecStrings.audio = 'mp4a.40.' + codecInfo.audioProfile; + } + + // Finally, make and return an array with proper mime-types depending on + // the configuration + var justAudio = makeMimeTypeString('audio', containerType, [codecStrings.audio]); + var justVideo = makeMimeTypeString('video', containerType, [codecStrings.video]); + var bothVideoAudio = makeMimeTypeString('video', containerType, [codecStrings.video, codecStrings.audio]); + + if (isMaat) { + if (!isMuxed && codecStrings.video) { + return [justVideo, justAudio]; + } + + if (!isMuxed && !codecStrings.video) { + // There is no muxed content and no video codec string, so this is an audio only + // stream with alternate audio. + return [justAudio, justAudio]; + } + + // There exists the possiblity that this will return a `video/container` + // mime-type for the first entry in the array even when there is only audio. + // This doesn't appear to be a problem and simplifies the code. + return [bothVideoAudio, justAudio]; + } + + // If there is no video codec at all, always just return a single + // audio/<container> mime-type + if (!codecStrings.video) { + return [justAudio]; + } + + // When not using separate audio media groups, audio and video is + // *always* muxed + return [bothVideoAudio]; + }; + + /** + * Parse a content type header into a type and parameters + * object + * + * @param {String} type the content type header + * @return {Object} the parsed content-type + * @private + */ + var parseContentType = function parseContentType(type) { + var object = { type: '', parameters: {} }; + var parameters = type.trim().split(';'); + + // first parameter should always be content-type + object.type = parameters.shift().trim(); + parameters.forEach(function (parameter) { + var pair = parameter.trim().split('='); + + if (pair.length > 1) { + var name = pair[0].replace(/"/g, '').trim(); + var value = pair[1].replace(/"/g, '').trim(); + + object.parameters[name] = value; + } + }); + + return object; + }; + + /** + * Check if a codec string refers to an audio codec. + * + * @param {String} codec codec string to check + * @return {Boolean} if this is an audio codec + * @private + */ + var isAudioCodec = function isAudioCodec(codec) { + return (/mp4a\.\d+.\d+/i.test(codec) + ); + }; + + /** + * Check if a codec string refers to a video codec. + * + * @param {String} codec codec string to check + * @return {Boolean} if this is a video codec + * @private + */ + var isVideoCodec = function isVideoCodec(codec) { + return (/avc1\.[\da-f]+/i.test(codec) + ); + }; + + /** + * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in + * front of current time. + * + * @param {Array} buffer + * The current buffer of gop information + * @param {Number} currentTime + * The current time + * @param {Double} mapping + * Offset to map display time to stream presentation time + * @return {Array} + * List of gops considered safe to append over + */ + var gopsSafeToAlignWith = function gopsSafeToAlignWith(buffer, currentTime, mapping) { + if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) { + return []; + } + + // pts value for current time + 3 seconds to give a bit more wiggle room + var currentTimePts = Math.ceil((currentTime - mapping + 3) * 90000); + + var i = void 0; + + for (i = 0; i < buffer.length; i++) { + if (buffer[i].pts > currentTimePts) { + break; + } + } + + return buffer.slice(i); + }; + + /** + * Appends gop information (timing and byteLength) received by the transmuxer for the + * gops appended in the last call to appendBuffer + * + * @param {Array} buffer + * The current buffer of gop information + * @param {Array} gops + * List of new gop information + * @param {boolean} replace + * If true, replace the buffer with the new gop information. If false, append the + * new gop information to the buffer in the right location of time. + * @return {Array} + * Updated list of gop information + */ + var updateGopBuffer = function updateGopBuffer(buffer, gops, replace) { + if (!gops.length) { + return buffer; + } + + if (replace) { + // If we are in safe append mode, then completely overwrite the gop buffer + // with the most recent appeneded data. This will make sure that when appending + // future segments, we only try to align with gops that are both ahead of current + // time and in the last segment appended. + return gops.slice(); + } + + var start = gops[0].pts; + + var i = 0; + + for (i; i < buffer.length; i++) { + if (buffer[i].pts >= start) { + break; + } + } + + return buffer.slice(0, i).concat(gops); + }; + + /** + * Removes gop information in buffer that overlaps with provided start and end + * + * @param {Array} buffer + * The current buffer of gop information + * @param {Double} start + * position to start the remove at + * @param {Double} end + * position to end the remove at + * @param {Double} mapping + * Offset to map display time to stream presentation time + */ + var removeGopBuffer = function removeGopBuffer(buffer, start, end, mapping) { + var startPts = Math.ceil((start - mapping) * 90000); + var endPts = Math.ceil((end - mapping) * 90000); + var updatedBuffer = buffer.slice(); + + var i = buffer.length; + + while (i--) { + if (buffer[i].pts <= endPts) { + break; + } + } + + if (i === -1) { + // no removal because end of remove range is before start of buffer + return updatedBuffer; + } + + var j = i + 1; + + while (j--) { + if (buffer[j].pts <= startPts) { + break; + } + } + + // clamp remove range start to 0 index + j = Math.max(j, 0); + + updatedBuffer.splice(j, i - j + 1); + + return updatedBuffer; + }; + + var buffered = function buffered(videoBuffer, audioBuffer, audioDisabled) { + var start = null; + var end = null; + var arity = 0; + var extents = []; + var ranges = []; + + // neither buffer has been created yet + if (!videoBuffer && !audioBuffer) { + return videojs$1.createTimeRange(); + } + + // only one buffer is configured + if (!videoBuffer) { + return audioBuffer.buffered; + } + if (!audioBuffer) { + return videoBuffer.buffered; + } + + // both buffers are configured + if (audioDisabled) { + return videoBuffer.buffered; + } + + // both buffers are empty + if (videoBuffer.buffered.length === 0 && audioBuffer.buffered.length === 0) { + return videojs$1.createTimeRange(); + } + + // Handle the case where we have both buffers and create an + // intersection of the two + var videoBuffered = videoBuffer.buffered; + var audioBuffered = audioBuffer.buffered; + var count = videoBuffered.length; + + // A) Gather up all start and end times + while (count--) { + extents.push({ time: videoBuffered.start(count), type: 'start' }); + extents.push({ time: videoBuffered.end(count), type: 'end' }); + } + count = audioBuffered.length; + while (count--) { + extents.push({ time: audioBuffered.start(count), type: 'start' }); + extents.push({ time: audioBuffered.end(count), type: 'end' }); + } + // B) Sort them by time + extents.sort(function (a, b) { + return a.time - b.time; + }); + + // C) Go along one by one incrementing arity for start and decrementing + // arity for ends + for (count = 0; count < extents.length; count++) { + if (extents[count].type === 'start') { + arity++; + + // D) If arity is ever incremented to 2 we are entering an + // overlapping range + if (arity === 2) { + start = extents[count].time; + } + } else if (extents[count].type === 'end') { + arity--; + + // E) If arity is ever decremented to 1 we leaving an + // overlapping range + if (arity === 1) { + end = extents[count].time; + } + } + + // F) Record overlapping ranges + if (start !== null && end !== null) { + ranges.push([start, end]); + start = null; + end = null; + } + } + + return videojs$1.createTimeRanges(ranges); + }; + + /** + * @file virtual-source-buffer.js + */ + + // We create a wrapper around the SourceBuffer so that we can manage the + // state of the `updating` property manually. We have to do this because + // Firefox changes `updating` to false long before triggering `updateend` + // events and that was causing strange problems in videojs-contrib-hls + var makeWrappedSourceBuffer = function makeWrappedSourceBuffer(mediaSource, mimeType) { + var sourceBuffer = mediaSource.addSourceBuffer(mimeType); + var wrapper = Object.create(null); + + wrapper.updating = false; + wrapper.realBuffer_ = sourceBuffer; + + var _loop = function _loop(key) { + if (typeof sourceBuffer[key] === 'function') { + wrapper[key] = function () { + return sourceBuffer[key].apply(sourceBuffer, arguments); + }; + } else if (typeof wrapper[key] === 'undefined') { + Object.defineProperty(wrapper, key, { + get: function get$$1() { + return sourceBuffer[key]; + }, + set: function set$$1(v) { + return sourceBuffer[key] = v; + } + }); + } + }; + + for (var key in sourceBuffer) { + _loop(key); + } + + return wrapper; + }; + + /** + * VirtualSourceBuffers exist so that we can transmux non native formats + * into a native format, but keep the same api as a native source buffer. + * It creates a transmuxer, that works in its own thread (a web worker) and + * that transmuxer muxes the data into a native format. VirtualSourceBuffer will + * then send all of that data to the naive sourcebuffer so that it is + * indestinguishable from a natively supported format. + * + * @param {HtmlMediaSource} mediaSource the parent mediaSource + * @param {Array} codecs array of codecs that we will be dealing with + * @class VirtualSourceBuffer + * @extends video.js.EventTarget + */ + + var VirtualSourceBuffer = function (_videojs$EventTarget) { + inherits$3(VirtualSourceBuffer, _videojs$EventTarget); + + function VirtualSourceBuffer(mediaSource, codecs) { + classCallCheck$3(this, VirtualSourceBuffer); + + var _this = possibleConstructorReturn$3(this, (VirtualSourceBuffer.__proto__ || Object.getPrototypeOf(VirtualSourceBuffer)).call(this, videojs$1.EventTarget)); + + _this.timestampOffset_ = 0; + _this.pendingBuffers_ = []; + _this.bufferUpdating_ = false; + + _this.mediaSource_ = mediaSource; + _this.codecs_ = codecs; + _this.audioCodec_ = null; + _this.videoCodec_ = null; + _this.audioDisabled_ = false; + _this.appendAudioInitSegment_ = true; + _this.gopBuffer_ = []; + _this.timeMapping_ = 0; + _this.safeAppend_ = videojs$1.browser.IE_VERSION >= 11; + + var options = { + remux: false, + alignGopsAtEnd: _this.safeAppend_ + }; + + _this.codecs_.forEach(function (codec) { + if (isAudioCodec(codec)) { + _this.audioCodec_ = codec; + } else if (isVideoCodec(codec)) { + _this.videoCodec_ = codec; + } + }); + + // append muxed segments to their respective native buffers as + // soon as they are available + _this.transmuxer_ = new TransmuxWorker(); + _this.transmuxer_.postMessage({ action: 'init', options: options }); + + _this.transmuxer_.onmessage = function (event) { + if (event.data.action === 'data') { + return _this.data_(event); + } + + if (event.data.action === 'done') { + return _this.done_(event); + } + + if (event.data.action === 'gopInfo') { + return _this.appendGopInfo_(event); + } + }; + + // this timestampOffset is a property with the side-effect of resetting + // baseMediaDecodeTime in the transmuxer on the setter + Object.defineProperty(_this, 'timestampOffset', { + get: function get$$1() { + return this.timestampOffset_; + }, + set: function set$$1(val) { + if (typeof val === 'number' && val >= 0) { + this.timestampOffset_ = val; + this.appendAudioInitSegment_ = true; + + // reset gop buffer on timestampoffset as this signals a change in timeline + this.gopBuffer_.length = 0; + this.timeMapping_ = 0; + + // We have to tell the transmuxer to set the baseMediaDecodeTime to + // the desired timestampOffset for the next segment + this.transmuxer_.postMessage({ + action: 'setTimestampOffset', + timestampOffset: val + }); + } + } + }); + + // setting the append window affects both source buffers + Object.defineProperty(_this, 'appendWindowStart', { + get: function get$$1() { + return (this.videoBuffer_ || this.audioBuffer_).appendWindowStart; + }, + set: function set$$1(start) { + if (this.videoBuffer_) { + this.videoBuffer_.appendWindowStart = start; + } + if (this.audioBuffer_) { + this.audioBuffer_.appendWindowStart = start; + } + } + }); + + // this buffer is "updating" if either of its native buffers are + Object.defineProperty(_this, 'updating', { + get: function get$$1() { + return !!(this.bufferUpdating_ || !this.audioDisabled_ && this.audioBuffer_ && this.audioBuffer_.updating || this.videoBuffer_ && this.videoBuffer_.updating); + } + }); + + // the buffered property is the intersection of the buffered + // ranges of the native source buffers + Object.defineProperty(_this, 'buffered', { + get: function get$$1() { + return buffered(this.videoBuffer_, this.audioBuffer_, this.audioDisabled_); + } + }); + return _this; + } + + /** + * When we get a data event from the transmuxer + * we call this function and handle the data that + * was sent to us + * + * @private + * @param {Event} event the data event from the transmuxer + */ + + createClass$2(VirtualSourceBuffer, [{ + key: 'data_', + value: function data_(event) { + var segment = event.data.segment; + + // Cast ArrayBuffer to TypedArray + segment.data = new Uint8Array(segment.data, event.data.byteOffset, event.data.byteLength); + + segment.initSegment = new Uint8Array(segment.initSegment.data, segment.initSegment.byteOffset, segment.initSegment.byteLength); + + createTextTracksIfNecessary(this, this.mediaSource_, segment); + + // Add the segments to the pendingBuffers array + this.pendingBuffers_.push(segment); + return; + } + + /** + * When we get a done event from the transmuxer + * we call this function and we process all + * of the pending data that we have been saving in the + * data_ function + * + * @private + * @param {Event} event the done event from the transmuxer + */ + + }, { + key: 'done_', + value: function done_(event) { + // Don't process and append data if the mediaSource is closed + if (this.mediaSource_.readyState === 'closed') { + this.pendingBuffers_.length = 0; + return; + } + + // All buffers should have been flushed from the muxer + // start processing anything we have received + this.processPendingSegments_(); + return; + } + + /** + * Create our internal native audio/video source buffers and add + * event handlers to them with the following conditions: + * 1. they do not already exist on the mediaSource + * 2. this VSB has a codec for them + * + * @private + */ + + }, { + key: 'createRealSourceBuffers_', + value: function createRealSourceBuffers_() { + var _this2 = this; + + var types = ['audio', 'video']; + + types.forEach(function (type) { + // Don't create a SourceBuffer of this type if we don't have a + // codec for it + if (!_this2[type + 'Codec_']) { + return; + } + + // Do nothing if a SourceBuffer of this type already exists + if (_this2[type + 'Buffer_']) { + return; + } + + var buffer = null; + + // If the mediasource already has a SourceBuffer for the codec + // use that + if (_this2.mediaSource_[type + 'Buffer_']) { + buffer = _this2.mediaSource_[type + 'Buffer_']; + // In multiple audio track cases, the audio source buffer is disabled + // on the main VirtualSourceBuffer by the HTMLMediaSource much earlier + // than createRealSourceBuffers_ is called to create the second + // VirtualSourceBuffer because that happens as a side-effect of + // videojs-contrib-hls starting the audioSegmentLoader. As a result, + // the audioBuffer is essentially "ownerless" and no one will toggle + // the `updating` state back to false once the `updateend` event is received + // + // Setting `updating` to false manually will work around this + // situation and allow work to continue + buffer.updating = false; + } else { + var codecProperty = type + 'Codec_'; + var mimeType = type + '/mp4;codecs="' + _this2[codecProperty] + '"'; + + buffer = makeWrappedSourceBuffer(_this2.mediaSource_.nativeMediaSource_, mimeType); + + _this2.mediaSource_[type + 'Buffer_'] = buffer; + } + + _this2[type + 'Buffer_'] = buffer; + + // Wire up the events to the SourceBuffer + ['update', 'updatestart', 'updateend'].forEach(function (event) { + buffer.addEventListener(event, function () { + // if audio is disabled + if (type === 'audio' && _this2.audioDisabled_) { + return; + } + + if (event === 'updateend') { + _this2[type + 'Buffer_'].updating = false; + } + + var shouldTrigger = types.every(function (t) { + // skip checking audio's updating status if audio + // is not enabled + if (t === 'audio' && _this2.audioDisabled_) { + return true; + } + // if the other type if updating we don't trigger + if (type !== t && _this2[t + 'Buffer_'] && _this2[t + 'Buffer_'].updating) { + return false; + } + return true; + }); + + if (shouldTrigger) { + return _this2.trigger(event); + } + }); + }); + }); + } + + /** + * Emulate the native mediasource function, but our function will + * send all of the proposed segments to the transmuxer so that we + * can transmux them before we append them to our internal + * native source buffers in the correct format. + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer + * @param {Uint8Array} segment the segment to append to the buffer + */ + + }, { + key: 'appendBuffer', + value: function appendBuffer(segment) { + // Start the internal "updating" state + this.bufferUpdating_ = true; + + if (this.audioBuffer_ && this.audioBuffer_.buffered.length) { + var audioBuffered = this.audioBuffer_.buffered; + + this.transmuxer_.postMessage({ + action: 'setAudioAppendStart', + appendStart: audioBuffered.end(audioBuffered.length - 1) + }); + } + + if (this.videoBuffer_) { + this.transmuxer_.postMessage({ + action: 'alignGopsWith', + gopsToAlignWith: gopsSafeToAlignWith(this.gopBuffer_, this.mediaSource_.player_ ? this.mediaSource_.player_.currentTime() : null, this.timeMapping_) + }); + } + + this.transmuxer_.postMessage({ + action: 'push', + // Send the typed-array of data as an ArrayBuffer so that + // it can be sent as a "Transferable" and avoid the costly + // memory copy + data: segment.buffer, + + // To recreate the original typed-array, we need information + // about what portion of the ArrayBuffer it was a view into + byteOffset: segment.byteOffset, + byteLength: segment.byteLength + }, [segment.buffer]); + this.transmuxer_.postMessage({ action: 'flush' }); + } + + /** + * Appends gop information (timing and byteLength) received by the transmuxer for the + * gops appended in the last call to appendBuffer + * + * @param {Event} event + * The gopInfo event from the transmuxer + * @param {Array} event.data.gopInfo + * List of gop info to append + */ + + }, { + key: 'appendGopInfo_', + value: function appendGopInfo_(event) { + this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, event.data.gopInfo, this.safeAppend_); + } + + /** + * Emulate the native mediasource function and remove parts + * of the buffer from any of our internal buffers that exist + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove + * @param {Double} start position to start the remove at + * @param {Double} end position to end the remove at + */ + + }, { + key: 'remove', + value: function remove(start, end) { + if (this.videoBuffer_) { + this.videoBuffer_.updating = true; + this.videoBuffer_.remove(start, end); + this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_); + } + if (!this.audioDisabled_ && this.audioBuffer_) { + this.audioBuffer_.updating = true; + this.audioBuffer_.remove(start, end); + } + + // Remove Metadata Cues (id3) + removeCuesFromTrack(start, end, this.metadataTrack_); + + // Remove Any Captions + if (this.inbandTextTracks_) { + for (var track in this.inbandTextTracks_) { + removeCuesFromTrack(start, end, this.inbandTextTracks_[track]); + } + } + } + + /** + * Process any segments that the muxer has output + * Concatenate segments together based on type and append them into + * their respective sourceBuffers + * + * @private + */ + + }, { + key: 'processPendingSegments_', + value: function processPendingSegments_() { + var sortedSegments = { + video: { + segments: [], + bytes: 0 + }, + audio: { + segments: [], + bytes: 0 + }, + captions: [], + metadata: [] + }; + + // Sort segments into separate video/audio arrays and + // keep track of their total byte lengths + sortedSegments = this.pendingBuffers_.reduce(function (segmentObj, segment) { + var type = segment.type; + var data = segment.data; + var initSegment = segment.initSegment; + + segmentObj[type].segments.push(data); + segmentObj[type].bytes += data.byteLength; + + segmentObj[type].initSegment = initSegment; + + // Gather any captions into a single array + if (segment.captions) { + segmentObj.captions = segmentObj.captions.concat(segment.captions); + } + + if (segment.info) { + segmentObj[type].info = segment.info; + } + + // Gather any metadata into a single array + if (segment.metadata) { + segmentObj.metadata = segmentObj.metadata.concat(segment.metadata); + } + + return segmentObj; + }, sortedSegments); + + // Create the real source buffers if they don't exist by now since we + // finally are sure what tracks are contained in the source + if (!this.videoBuffer_ && !this.audioBuffer_) { + // Remove any codecs that may have been specified by default but + // are no longer applicable now + if (sortedSegments.video.bytes === 0) { + this.videoCodec_ = null; + } + if (sortedSegments.audio.bytes === 0) { + this.audioCodec_ = null; + } + + this.createRealSourceBuffers_(); + } + + if (sortedSegments.audio.info) { + this.mediaSource_.trigger({ type: 'audioinfo', info: sortedSegments.audio.info }); + } + if (sortedSegments.video.info) { + this.mediaSource_.trigger({ type: 'videoinfo', info: sortedSegments.video.info }); + } + + if (this.appendAudioInitSegment_) { + if (!this.audioDisabled_ && this.audioBuffer_) { + sortedSegments.audio.segments.unshift(sortedSegments.audio.initSegment); + sortedSegments.audio.bytes += sortedSegments.audio.initSegment.byteLength; + } + this.appendAudioInitSegment_ = false; + } + + var triggerUpdateend = false; + + // Merge multiple video and audio segments into one and append + if (this.videoBuffer_ && sortedSegments.video.bytes) { + sortedSegments.video.segments.unshift(sortedSegments.video.initSegment); + sortedSegments.video.bytes += sortedSegments.video.initSegment.byteLength; + this.concatAndAppendSegments_(sortedSegments.video, this.videoBuffer_); + // TODO: are video tracks the only ones with text tracks? + addTextTrackData(this, sortedSegments.captions, sortedSegments.metadata); + } else if (this.videoBuffer_ && (this.audioDisabled_ || !this.audioBuffer_)) { + // The transmuxer did not return any bytes of video, meaning it was all trimmed + // for gop alignment. Since we have a video buffer and audio is disabled, updateend + // will never be triggered by this source buffer, which will cause contrib-hls + // to be stuck forever waiting for updateend. If audio is not disabled, updateend + // will be triggered by the audio buffer, which will be sent upwards since the video + // buffer will not be in an updating state. + triggerUpdateend = true; + } + + if (!this.audioDisabled_ && this.audioBuffer_) { + this.concatAndAppendSegments_(sortedSegments.audio, this.audioBuffer_); + } + + this.pendingBuffers_.length = 0; + + if (triggerUpdateend) { + this.trigger('updateend'); + } + + // We are no longer in the internal "updating" state + this.bufferUpdating_ = false; + } + + /** + * Combine all segments into a single Uint8Array and then append them + * to the destination buffer + * + * @param {Object} segmentObj + * @param {SourceBuffer} destinationBuffer native source buffer to append data to + * @private + */ + + }, { + key: 'concatAndAppendSegments_', + value: function concatAndAppendSegments_(segmentObj, destinationBuffer) { + var offset = 0; + var tempBuffer = void 0; + + if (segmentObj.bytes) { + tempBuffer = new Uint8Array(segmentObj.bytes); + + // Combine the individual segments into one large typed-array + segmentObj.segments.forEach(function (segment) { + tempBuffer.set(segment, offset); + offset += segment.byteLength; + }); + + try { + destinationBuffer.updating = true; + destinationBuffer.appendBuffer(tempBuffer); + } catch (error) { + if (this.mediaSource_.player_) { + this.mediaSource_.player_.error({ + code: -3, + type: 'APPEND_BUFFER_ERR', + message: error.message, + originalError: error + }); + } + } + } + } + + /** + * Emulate the native mediasource function. abort any soureBuffer + * actions and throw out any un-appended data. + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort + */ + + }, { + key: 'abort', + value: function abort() { + if (this.videoBuffer_) { + this.videoBuffer_.abort(); + } + if (!this.audioDisabled_ && this.audioBuffer_) { + this.audioBuffer_.abort(); + } + if (this.transmuxer_) { + this.transmuxer_.postMessage({ action: 'reset' }); + } + this.pendingBuffers_.length = 0; + this.bufferUpdating_ = false; + } + }]); + return VirtualSourceBuffer; + }(videojs$1.EventTarget); + + /** + * @file html-media-source.js + */ + + /** + * Our MediaSource implementation in HTML, mimics native + * MediaSource where/if possible. + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource + * @class HtmlMediaSource + * @extends videojs.EventTarget + */ + + var HtmlMediaSource = function (_videojs$EventTarget) { + inherits$3(HtmlMediaSource, _videojs$EventTarget); + + function HtmlMediaSource() { + classCallCheck$3(this, HtmlMediaSource); + + var _this = possibleConstructorReturn$3(this, (HtmlMediaSource.__proto__ || Object.getPrototypeOf(HtmlMediaSource)).call(this)); + + var property = void 0; + + _this.nativeMediaSource_ = new window_1.MediaSource(); + // delegate to the native MediaSource's methods by default + for (property in _this.nativeMediaSource_) { + if (!(property in HtmlMediaSource.prototype) && typeof _this.nativeMediaSource_[property] === 'function') { + _this[property] = _this.nativeMediaSource_[property].bind(_this.nativeMediaSource_); + } + } + + // emulate `duration` and `seekable` until seeking can be + // handled uniformly for live streams + // see https://github.com/w3c/media-source/issues/5 + _this.duration_ = NaN; + Object.defineProperty(_this, 'duration', { + get: function get$$1() { + if (this.duration_ === Infinity) { + return this.duration_; + } + return this.nativeMediaSource_.duration; + }, + set: function set$$1(duration) { + this.duration_ = duration; + if (duration !== Infinity) { + this.nativeMediaSource_.duration = duration; + return; + } + } + }); + Object.defineProperty(_this, 'seekable', { + get: function get$$1() { + if (this.duration_ === Infinity) { + return videojs$1.createTimeRanges([[0, this.nativeMediaSource_.duration]]); + } + return this.nativeMediaSource_.seekable; + } + }); + + Object.defineProperty(_this, 'readyState', { + get: function get$$1() { + return this.nativeMediaSource_.readyState; + } + }); + + Object.defineProperty(_this, 'activeSourceBuffers', { + get: function get$$1() { + return this.activeSourceBuffers_; + } + }); + + // the list of virtual and native SourceBuffers created by this + // MediaSource + _this.sourceBuffers = []; + + _this.activeSourceBuffers_ = []; + + /** + * update the list of active source buffers based upon various + * imformation from HLS and video.js + * + * @private + */ + _this.updateActiveSourceBuffers_ = function () { + // Retain the reference but empty the array + _this.activeSourceBuffers_.length = 0; + + // If there is only one source buffer, then it will always be active and audio will + // be disabled based on the codec of the source buffer + if (_this.sourceBuffers.length === 1) { + var sourceBuffer = _this.sourceBuffers[0]; + + sourceBuffer.appendAudioInitSegment_ = true; + sourceBuffer.audioDisabled_ = !sourceBuffer.audioCodec_; + _this.activeSourceBuffers_.push(sourceBuffer); + return; + } + + // There are 2 source buffers, a combined (possibly video only) source buffer and + // and an audio only source buffer. + // By default, the audio in the combined virtual source buffer is enabled + // and the audio-only source buffer (if it exists) is disabled. + var disableCombined = false; + var disableAudioOnly = true; + + // TODO: maybe we can store the sourcebuffers on the track objects? + // safari may do something like this + for (var i = 0; i < _this.player_.audioTracks().length; i++) { + var track = _this.player_.audioTracks()[i]; + + if (track.enabled && track.kind !== 'main') { + // The enabled track is an alternate audio track so disable the audio in + // the combined source buffer and enable the audio-only source buffer. + disableCombined = true; + disableAudioOnly = false; + break; + } + } + + _this.sourceBuffers.forEach(function (sourceBuffer, index) { + /* eslinst-disable */ + // TODO once codecs are required, we can switch to using the codecs to determine + // what stream is the video stream, rather than relying on videoTracks + /* eslinst-enable */ + + sourceBuffer.appendAudioInitSegment_ = true; + + if (sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) { + // combined + sourceBuffer.audioDisabled_ = disableCombined; + } else if (sourceBuffer.videoCodec_ && !sourceBuffer.audioCodec_) { + // If the "combined" source buffer is video only, then we do not want + // disable the audio-only source buffer (this is mostly for demuxed + // audio and video hls) + sourceBuffer.audioDisabled_ = true; + disableAudioOnly = false; + } else if (!sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) { + // audio only + // In the case of audio only with alternate audio and disableAudioOnly is true + // this means we want to disable the audio on the alternate audio sourcebuffer + // but not the main "combined" source buffer. The "combined" source buffer is + // always at index 0, so this ensures audio won't be disabled in both source + // buffers. + sourceBuffer.audioDisabled_ = index ? disableAudioOnly : !disableAudioOnly; + if (sourceBuffer.audioDisabled_) { + return; + } + } + + _this.activeSourceBuffers_.push(sourceBuffer); + }); + }; + + _this.onPlayerMediachange_ = function () { + _this.sourceBuffers.forEach(function (sourceBuffer) { + sourceBuffer.appendAudioInitSegment_ = true; + }); + }; + + _this.onHlsReset_ = function () { + _this.sourceBuffers.forEach(function (sourceBuffer) { + if (sourceBuffer.transmuxer_) { + sourceBuffer.transmuxer_.postMessage({ action: 'resetCaptions' }); + } + }); + }; + + _this.onHlsSegmentTimeMapping_ = function (event) { + _this.sourceBuffers.forEach(function (buffer) { + return buffer.timeMapping_ = event.mapping; + }); + }; + + // Re-emit MediaSource events on the polyfill + ['sourceopen', 'sourceclose', 'sourceended'].forEach(function (eventName) { + this.nativeMediaSource_.addEventListener(eventName, this.trigger.bind(this)); + }, _this); + + // capture the associated player when the MediaSource is + // successfully attached + _this.on('sourceopen', function (event) { + // Get the player this MediaSource is attached to + var video = document_1.querySelector('[src="' + _this.url_ + '"]'); + + if (!video) { + return; + } + + _this.player_ = videojs$1(video.parentNode); + + // hls-reset is fired by videojs.Hls on to the tech after the main SegmentLoader + // resets its state and flushes the buffer + _this.player_.tech_.on('hls-reset', _this.onHlsReset_); + // hls-segment-time-mapping is fired by videojs.Hls on to the tech after the main + // SegmentLoader inspects an MTS segment and has an accurate stream to display + // time mapping + _this.player_.tech_.on('hls-segment-time-mapping', _this.onHlsSegmentTimeMapping_); + + if (_this.player_.audioTracks && _this.player_.audioTracks()) { + _this.player_.audioTracks().on('change', _this.updateActiveSourceBuffers_); + _this.player_.audioTracks().on('addtrack', _this.updateActiveSourceBuffers_); + _this.player_.audioTracks().on('removetrack', _this.updateActiveSourceBuffers_); + } + + _this.player_.on('mediachange', _this.onPlayerMediachange_); + }); + + _this.on('sourceended', function (event) { + var duration = durationOfVideo(_this.duration); + + for (var i = 0; i < _this.sourceBuffers.length; i++) { + var sourcebuffer = _this.sourceBuffers[i]; + var cues = sourcebuffer.metadataTrack_ && sourcebuffer.metadataTrack_.cues; + + if (cues && cues.length) { + cues[cues.length - 1].endTime = duration; + } + } + }); + + // explicitly terminate any WebWorkers that were created + // by SourceHandlers + _this.on('sourceclose', function (event) { + this.sourceBuffers.forEach(function (sourceBuffer) { + if (sourceBuffer.transmuxer_) { + sourceBuffer.transmuxer_.terminate(); + } + }); + + this.sourceBuffers.length = 0; + if (!this.player_) { + return; + } + + if (this.player_.audioTracks && this.player_.audioTracks()) { + this.player_.audioTracks().off('change', this.updateActiveSourceBuffers_); + this.player_.audioTracks().off('addtrack', this.updateActiveSourceBuffers_); + this.player_.audioTracks().off('removetrack', this.updateActiveSourceBuffers_); + } + + // We can only change this if the player hasn't been disposed of yet + // because `off` eventually tries to use the el_ property. If it has + // been disposed of, then don't worry about it because there are no + // event handlers left to unbind anyway + if (this.player_.el_) { + this.player_.off('mediachange', this.onPlayerMediachange_); + this.player_.tech_.off('hls-reset', this.onHlsReset_); + this.player_.tech_.off('hls-segment-time-mapping', this.onHlsSegmentTimeMapping_); + } + }); + return _this; + } + + /** + * Add a range that that can now be seeked to. + * + * @param {Double} start where to start the addition + * @param {Double} end where to end the addition + * @private + */ + + createClass$2(HtmlMediaSource, [{ + key: 'addSeekableRange_', + value: function addSeekableRange_(start, end) { + var error = void 0; + + if (this.duration !== Infinity) { + error = new Error('MediaSource.addSeekableRange() can only be invoked ' + 'when the duration is Infinity'); + error.name = 'InvalidStateError'; + error.code = 11; + throw error; + } + + if (end > this.nativeMediaSource_.duration || isNaN(this.nativeMediaSource_.duration)) { + this.nativeMediaSource_.duration = end; + } + } + + /** + * Add a source buffer to the media source. + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/addSourceBuffer + * @param {String} type the content-type of the content + * @return {Object} the created source buffer + */ + + }, { + key: 'addSourceBuffer', + value: function addSourceBuffer(type) { + var buffer = void 0; + var parsedType = parseContentType(type); + + // Create a VirtualSourceBuffer to transmux MPEG-2 transport + // stream segments into fragmented MP4s + if (/^(video|audio)\/mp2t$/i.test(parsedType.type)) { + var codecs = []; + + if (parsedType.parameters && parsedType.parameters.codecs) { + codecs = parsedType.parameters.codecs.split(','); + codecs = translateLegacyCodecs(codecs); + codecs = codecs.filter(function (codec) { + return isAudioCodec(codec) || isVideoCodec(codec); + }); + } + + if (codecs.length === 0) { + codecs = ['avc1.4d400d', 'mp4a.40.2']; + } + + buffer = new VirtualSourceBuffer(this, codecs); + + if (this.sourceBuffers.length !== 0) { + // If another VirtualSourceBuffer already exists, then we are creating a + // SourceBuffer for an alternate audio track and therefore we know that + // the source has both an audio and video track. + // That means we should trigger the manual creation of the real + // SourceBuffers instead of waiting for the transmuxer to return data + this.sourceBuffers[0].createRealSourceBuffers_(); + buffer.createRealSourceBuffers_(); + + // Automatically disable the audio on the first source buffer if + // a second source buffer is ever created + this.sourceBuffers[0].audioDisabled_ = true; + } + } else { + // delegate to the native implementation + buffer = this.nativeMediaSource_.addSourceBuffer(type); + } + + this.sourceBuffers.push(buffer); + return buffer; + } + }]); + return HtmlMediaSource; + }(videojs$1.EventTarget); + + /** + * @file videojs-contrib-media-sources.js + */ + var urlCount = 0; + + // ------------ + // Media Source + // ------------ + + // store references to the media sources so they can be connected + // to a video element (a swf object) + // TODO: can we store this somewhere local to this module? + videojs$1.mediaSources = {}; + + /** + * Provide a method for a swf object to notify JS that a + * media source is now open. + * + * @param {String} msObjectURL string referencing the MSE Object URL + * @param {String} swfId the swf id + */ + var open = function open(msObjectURL, swfId) { + var mediaSource = videojs$1.mediaSources[msObjectURL]; + + if (mediaSource) { + mediaSource.trigger({ type: 'sourceopen', swfId: swfId }); + } else { + throw new Error('Media Source not found (Video.js)'); + } + }; + + /** + * Check to see if the native MediaSource object exists and supports + * an MP4 container with both H.264 video and AAC-LC audio. + * + * @return {Boolean} if native media sources are supported + */ + var supportsNativeMediaSources = function supportsNativeMediaSources() { + return !!window_1.MediaSource && !!window_1.MediaSource.isTypeSupported && window_1.MediaSource.isTypeSupported('video/mp4;codecs="avc1.4d400d,mp4a.40.2"'); + }; + + /** + * An emulation of the MediaSource API so that we can support + * native and non-native functionality. returns an instance of + * HtmlMediaSource. + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/MediaSource + */ + var MediaSource = function MediaSource() { + this.MediaSource = { + open: open, + supportsNativeMediaSources: supportsNativeMediaSources + }; + + if (supportsNativeMediaSources()) { + return new HtmlMediaSource(); + } + + throw new Error('Cannot use create a virtual MediaSource for this video'); + }; + + MediaSource.open = open; + MediaSource.supportsNativeMediaSources = supportsNativeMediaSources; + + /** + * A wrapper around the native URL for our MSE object + * implementation, this object is exposed under videojs.URL + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/URL/URL + */ + var URL$1 = { + /** + * A wrapper around the native createObjectURL for our objects. + * This function maps a native or emulated mediaSource to a blob + * url so that it can be loaded into video.js + * + * @link https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL + * @param {MediaSource} object the object to create a blob url to + */ + createObjectURL: function createObjectURL(object) { + var objectUrlPrefix = 'blob:vjs-media-source/'; + var url = void 0; + + // use the native MediaSource to generate an object URL + if (object instanceof HtmlMediaSource) { + url = window_1.URL.createObjectURL(object.nativeMediaSource_); + object.url_ = url; + return url; + } + // if the object isn't an emulated MediaSource, delegate to the + // native implementation + if (!(object instanceof HtmlMediaSource)) { + url = window_1.URL.createObjectURL(object); + object.url_ = url; + return url; + } + + // build a URL that can be used to map back to the emulated + // MediaSource + url = objectUrlPrefix + urlCount; + + urlCount++; + + // setup the mapping back to object + videojs$1.mediaSources[url] = object; + + return url; + } + }; + + videojs$1.MediaSource = MediaSource; + videojs$1.URL = URL$1; + + var EventTarget$1$1 = videojs$1.EventTarget, + mergeOptions$2 = videojs$1.mergeOptions; + + /** + * Returns a new master manifest that is the result of merging an updated master manifest + * into the original version. + * + * @param {Object} oldMaster + * The old parsed mpd object + * @param {Object} newMaster + * The updated parsed mpd object + * @return {Object} + * A new object representing the original master manifest with the updated media + * playlists merged in + */ + + var updateMaster$1 = function updateMaster$$1(oldMaster, newMaster) { + var update = mergeOptions$2(oldMaster, { + // These are top level properties that can be updated + duration: newMaster.duration, + minimumUpdatePeriod: newMaster.minimumUpdatePeriod + }); + + // First update the playlists in playlist list + for (var i = 0; i < newMaster.playlists.length; i++) { + var playlistUpdate = updateMaster(update, newMaster.playlists[i]); + + if (playlistUpdate) { + update = playlistUpdate; + } + } + + // Then update media group playlists + forEachMediaGroup(newMaster, function (properties, type, group, label) { + if (properties.playlists && properties.playlists.length) { + var uri = properties.playlists[0].uri; + var _playlistUpdate = updateMaster(update, properties.playlists[0]); + + if (_playlistUpdate) { + update = _playlistUpdate; + // update the playlist reference within media groups + update.mediaGroups[type][group][label].playlists[0] = update.playlists[uri]; + } + } + }); + + return update; + }; + + var DashPlaylistLoader = function (_EventTarget) { + inherits$3(DashPlaylistLoader, _EventTarget); + + // DashPlaylistLoader must accept either a src url or a playlist because subsequent + // playlist loader setups from media groups will expect to be able to pass a playlist + // (since there aren't external URLs to media playlists with DASH) + function DashPlaylistLoader(srcUrlOrPlaylist, hls, withCredentials, masterPlaylistLoader) { + classCallCheck$3(this, DashPlaylistLoader); + + var _this = possibleConstructorReturn$3(this, (DashPlaylistLoader.__proto__ || Object.getPrototypeOf(DashPlaylistLoader)).call(this)); + + _this.hls_ = hls; + _this.withCredentials = withCredentials; + + if (!srcUrlOrPlaylist) { + throw new Error('A non-empty playlist URL or playlist is required'); + } + + // event naming? + _this.on('minimumUpdatePeriod', function () { + _this.refreshXml_(); + }); + + // live playlist staleness timeout + _this.on('mediaupdatetimeout', function () { + _this.refreshMedia_(); + }); + + // initialize the loader state + if (typeof srcUrlOrPlaylist === 'string') { + _this.srcUrl = srcUrlOrPlaylist; + _this.state = 'HAVE_NOTHING'; + return possibleConstructorReturn$3(_this); + } + + _this.masterPlaylistLoader_ = masterPlaylistLoader; + + _this.state = 'HAVE_METADATA'; + _this.started = true; + // we only should have one playlist so select it + _this.media(srcUrlOrPlaylist); + // trigger async to mimic behavior of HLS, where it must request a playlist + window_1.setTimeout(function () { + _this.trigger('loadedmetadata'); + }, 0); + return _this; + } + + createClass$2(DashPlaylistLoader, [{ + key: 'dispose', + value: function dispose() { + this.stopRequest(); + window_1.clearTimeout(this.mediaUpdateTimeout); + } + }, { + key: 'stopRequest', + value: function stopRequest() { + if (this.request) { + var oldRequest = this.request; + + this.request = null; + oldRequest.onreadystatechange = null; + oldRequest.abort(); + } + } + }, { + key: 'media', + value: function media(playlist) { + // getter + if (!playlist) { + return this.media_; + } + + // setter + if (this.state === 'HAVE_NOTHING') { + throw new Error('Cannot switch media playlist from ' + this.state); + } + + var startingState = this.state; + + // find the playlist object if the target playlist has been specified by URI + if (typeof playlist === 'string') { + if (!this.master.playlists[playlist]) { + throw new Error('Unknown playlist URI: ' + playlist); + } + playlist = this.master.playlists[playlist]; + } + + var mediaChange = !this.media_ || playlist.uri !== this.media_.uri; + + this.state = 'HAVE_METADATA'; + + // switching to the active playlist is a no-op + if (!mediaChange) { + return; + } + + // switching from an already loaded playlist + if (this.media_) { + this.trigger('mediachanging'); + } + + this.media_ = playlist; + + this.refreshMedia_(); + + // trigger media change if the active media has been updated + if (startingState !== 'HAVE_MASTER') { + this.trigger('mediachange'); + } + } + }, { + key: 'pause', + value: function pause() { + this.stopRequest(); + if (this.state === 'HAVE_NOTHING') { + // If we pause the loader before any data has been retrieved, its as if we never + // started, so reset to an unstarted state. + this.started = false; + } + } + }, { + key: 'load', + value: function load() { + // because the playlists are internal to the manifest, load should either load the + // main manifest, or do nothing but trigger an event + if (!this.started) { + this.start(); + return; + } + + this.trigger('loadedplaylist'); + } + + /** + * Parses the master xml string and updates playlist uri references + * + * @return {Object} + * The parsed mpd manifest object + */ + + }, { + key: 'parseMasterXml', + value: function parseMasterXml() { + var master = parse(this.masterXml_, { + manifestUri: this.srcUrl, + clientOffset: this.clientOffset_ + }); + + master.uri = this.srcUrl; + + // Set up phony URIs for the playlists since we won't have external URIs for DASH + // but reference playlists by their URI throughout the project + // TODO: Should we create the dummy uris in mpd-parser as well (leaning towards yes). + for (var i = 0; i < master.playlists.length; i++) { + var phonyUri = 'placeholder-uri-' + i; + + master.playlists[i].uri = phonyUri; + // set up by URI references + master.playlists[phonyUri] = master.playlists[i]; + } + + // set up phony URIs for the media group playlists since we won't have external + // URIs for DASH but reference playlists by their URI throughout the project + forEachMediaGroup(master, function (properties, mediaType, groupKey, labelKey) { + if (properties.playlists && properties.playlists.length) { + var _phonyUri = 'placeholder-uri-' + mediaType + '-' + groupKey + '-' + labelKey; + + properties.playlists[0].uri = _phonyUri; + // setup URI references + master.playlists[_phonyUri] = properties.playlists[0]; + } + }); + + setupMediaPlaylists(master); + resolveMediaGroupUris(master); + + return master; + } + }, { + key: 'start', + value: function start() { + var _this2 = this; + + this.started = true; + + // request the specified URL + this.request = this.hls_.xhr({ + uri: this.srcUrl, + withCredentials: this.withCredentials + }, function (error, req) { + // disposed + if (!_this2.request) { + return; + } + + // clear the loader's request reference + _this2.request = null; + + if (error) { + _this2.error = { + status: req.status, + message: 'DASH playlist request error at URL: ' + _this2.srcUrl, + responseText: req.responseText, + // MEDIA_ERR_NETWORK + code: 2 + }; + if (_this2.state === 'HAVE_NOTHING') { + _this2.started = false; + } + return _this2.trigger('error'); + } + + _this2.masterXml_ = req.responseText; + + if (req.responseHeaders && req.responseHeaders.date) { + _this2.masterLoaded_ = Date.parse(req.responseHeaders.date); + } else { + _this2.masterLoaded_ = Date.now(); + } + + _this2.syncClientServerClock_(_this2.onClientServerClockSync_.bind(_this2)); + }); + } + + /** + * Parses the master xml for UTCTiming node to sync the client clock to the server + * clock. If the UTCTiming node requires a HEAD or GET request, that request is made. + * + * @param {Function} done + * Function to call when clock sync has completed + */ + + }, { + key: 'syncClientServerClock_', + value: function syncClientServerClock_(done) { + var _this3 = this; + + var utcTiming = parseUTCTiming(this.masterXml_); + + // No UTCTiming element found in the mpd. Use Date header from mpd request as the + // server clock + if (utcTiming === null) { + this.clientOffset_ = this.masterLoaded_ - Date.now(); + return done(); + } + + if (utcTiming.method === 'DIRECT') { + this.clientOffset_ = utcTiming.value - Date.now(); + return done(); + } + + this.request = this.hls_.xhr({ + uri: resolveUrl$1(this.srcUrl, utcTiming.value), + method: utcTiming.method, + withCredentials: this.withCredentials + }, function (error, req) { + // disposed + if (!_this3.request) { + return; + } + + if (error) { + // sync request failed, fall back to using date header from mpd + // TODO: log warning + _this3.clientOffset_ = _this3.masterLoaded_ - Date.now(); + return done(); + } + + var serverTime = void 0; + + if (utcTiming.method === 'HEAD') { + if (!req.responseHeaders || !req.responseHeaders.date) { + // expected date header not preset, fall back to using date header from mpd + // TODO: log warning + serverTime = _this3.masterLoaded_; + } else { + serverTime = Date.parse(req.responseHeaders.date); + } + } else { + serverTime = Date.parse(req.responseText); + } + + _this3.clientOffset_ = serverTime - Date.now(); + + done(); + }); + } + + /** + * Handler for after client/server clock synchronization has happened. Sets up + * xml refresh timer if specificed by the manifest. + */ + + }, { + key: 'onClientServerClockSync_', + value: function onClientServerClockSync_() { + var _this4 = this; + + this.master = this.parseMasterXml(); + + this.state = 'HAVE_MASTER'; + + this.trigger('loadedplaylist'); + + if (!this.media_) { + // no media playlist was specifically selected so start + // from the first listed one + this.media(this.master.playlists[0]); + } + // trigger loadedmetadata to resolve setup of media groups + // trigger async to mimic behavior of HLS, where it must request a playlist + window_1.setTimeout(function () { + _this4.trigger('loadedmetadata'); + }, 0); + + // TODO: minimumUpdatePeriod can have a value of 0. Currently the manifest will not + // be refreshed when this is the case. The inter-op guide says that when the + // minimumUpdatePeriod is 0, the manifest should outline all currently available + // segments, but future segments may require an update. I think a good solution + // would be to update the manifest at the same rate that the media playlists + // are "refreshed", i.e. every targetDuration. + if (this.master.minimumUpdatePeriod) { + window_1.setTimeout(function () { + _this4.trigger('minimumUpdatePeriod'); + }, this.master.minimumUpdatePeriod); + } + } + + /** + * Sends request to refresh the master xml and updates the parsed master manifest + * TODO: Does the client offset need to be recalculated when the xml is refreshed? + */ + + }, { + key: 'refreshXml_', + value: function refreshXml_() { + var _this5 = this; + + this.request = this.hls_.xhr({ + uri: this.srcUrl, + withCredentials: this.withCredentials + }, function (error, req) { + // disposed + if (!_this5.request) { + return; + } + + // clear the loader's request reference + _this5.request = null; + + if (error) { + _this5.error = { + status: req.status, + message: 'DASH playlist request error at URL: ' + _this5.srcUrl, + responseText: req.responseText, + // MEDIA_ERR_NETWORK + code: 2 + }; + if (_this5.state === 'HAVE_NOTHING') { + _this5.started = false; + } + return _this5.trigger('error'); + } + + _this5.masterXml_ = req.responseText; + + var newMaster = _this5.parseMasterXml(); + + _this5.master = updateMaster$1(_this5.master, newMaster); + + window_1.setTimeout(function () { + _this5.trigger('minimumUpdatePeriod'); + }, _this5.master.minimumUpdatePeriod); + }); + } + + /** + * Refreshes the media playlist by re-parsing the master xml and updating playlist + * references. If this is an alternate loader, the updated parsed manifest is retrieved + * from the master loader. + */ + + }, { + key: 'refreshMedia_', + value: function refreshMedia_() { + var _this6 = this; + + var oldMaster = void 0; + var newMaster = void 0; + + if (this.masterPlaylistLoader_) { + oldMaster = this.masterPlaylistLoader_.master; + newMaster = this.masterPlaylistLoader_.parseMasterXml(); + } else { + oldMaster = this.master; + newMaster = this.parseMasterXml(); + } + + var updatedMaster = updateMaster$1(oldMaster, newMaster); + + if (updatedMaster) { + if (this.masterPlaylistLoader_) { + this.masterPlaylistLoader_.master = updatedMaster; + } else { + this.master = updatedMaster; + } + this.media_ = updatedMaster.playlists[this.media_.uri]; + } else { + this.trigger('playlistunchanged'); + } + + if (!this.media().endList) { + this.mediaUpdateTimeout = window_1.setTimeout(function () { + _this6.trigger('mediaupdatetimeout'); + }, refreshDelay(this.media(), !!updatedMaster)); + } + + this.trigger('loadedplaylist'); + } + }]); + return DashPlaylistLoader; + }(EventTarget$1$1); + + var logger = function logger(source) { + if (videojs$1.log.debug) { + return videojs$1.log.debug.bind(videojs$1, 'VHS:', source + ' >'); + } + + return function () {}; + }; + + function noop$1() {} + + /** + * @file source-updater.js + */ + + /** + * A queue of callbacks to be serialized and applied when a + * MediaSource and its associated SourceBuffers are not in the + * updating state. It is used by the segment loader to update the + * underlying SourceBuffers when new data is loaded, for instance. + * + * @class SourceUpdater + * @param {MediaSource} mediaSource the MediaSource to create the + * SourceBuffer from + * @param {String} mimeType the desired MIME type of the underlying + * SourceBuffer + * @param {Object} sourceBufferEmitter an event emitter that fires when a source buffer is + * added to the media source + */ + + var SourceUpdater = function () { + function SourceUpdater(mediaSource, mimeType, type, sourceBufferEmitter) { + classCallCheck$3(this, SourceUpdater); + + this.callbacks_ = []; + this.pendingCallback_ = null; + this.timestampOffset_ = 0; + this.mediaSource = mediaSource; + this.processedAppend_ = false; + this.type_ = type; + this.mimeType_ = mimeType; + this.logger_ = logger('SourceUpdater[' + type + '][' + mimeType + ']'); + + if (mediaSource.readyState === 'closed') { + mediaSource.addEventListener('sourceopen', this.createSourceBuffer_.bind(this, mimeType, sourceBufferEmitter)); + } else { + this.createSourceBuffer_(mimeType, sourceBufferEmitter); + } + } + + createClass$2(SourceUpdater, [{ + key: 'createSourceBuffer_', + value: function createSourceBuffer_(mimeType, sourceBufferEmitter) { + var _this = this; + + this.sourceBuffer_ = this.mediaSource.addSourceBuffer(mimeType); + + this.logger_('created SourceBuffer'); + + if (sourceBufferEmitter) { + sourceBufferEmitter.trigger('sourcebufferadded'); + + if (this.mediaSource.sourceBuffers.length < 2) { + // There's another source buffer we must wait for before we can start updating + // our own (or else we can get into a bad state, i.e., appending video/audio data + // before the other video/audio source buffer is available and leading to a video + // or audio only buffer). + sourceBufferEmitter.on('sourcebufferadded', function () { + _this.start_(); + }); + return; + } + } + + this.start_(); + } + }, { + key: 'start_', + value: function start_() { + var _this2 = this; + + this.started_ = true; + + // run completion handlers and process callbacks as updateend + // events fire + this.onUpdateendCallback_ = function () { + var pendingCallback = _this2.pendingCallback_; + + _this2.pendingCallback_ = null; + + _this2.logger_('buffered [' + printableRange(_this2.buffered()) + ']'); + + if (pendingCallback) { + pendingCallback(); + } + + _this2.runCallback_(); + }; + + this.sourceBuffer_.addEventListener('updateend', this.onUpdateendCallback_); + + this.runCallback_(); + } + + /** + * Aborts the current segment and resets the segment parser. + * + * @param {Function} done function to call when done + * @see http://w3c.github.io/media-source/#widl-SourceBuffer-abort-void + */ + + }, { + key: 'abort', + value: function abort(done) { + var _this3 = this; + + if (this.processedAppend_) { + this.queueCallback_(function () { + _this3.sourceBuffer_.abort(); + }, done); + } + } + + /** + * Queue an update to append an ArrayBuffer. + * + * @param {ArrayBuffer} bytes + * @param {Function} done the function to call when done + * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data + */ + + }, { + key: 'appendBuffer', + value: function appendBuffer(bytes, done) { + var _this4 = this; + + this.processedAppend_ = true; + this.queueCallback_(function () { + _this4.sourceBuffer_.appendBuffer(bytes); + }, done); + } + + /** + * Indicates what TimeRanges are buffered in the managed SourceBuffer. + * + * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-buffered + */ + + }, { + key: 'buffered', + value: function buffered() { + if (!this.sourceBuffer_) { + return videojs$1.createTimeRanges(); + } + return this.sourceBuffer_.buffered; + } + + /** + * Queue an update to remove a time range from the buffer. + * + * @param {Number} start where to start the removal + * @param {Number} end where to end the removal + * @param {Function} [done=noop] optional callback to be executed when the remove + * operation is complete + * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end + */ + + }, { + key: 'remove', + value: function remove(start, end) { + var _this5 = this; + + var done = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : noop$1; + + if (this.processedAppend_) { + this.queueCallback_(function () { + _this5.logger_('remove [' + start + ' => ' + end + ']'); + _this5.sourceBuffer_.remove(start, end); + }, done); + } + } + + /** + * Whether the underlying sourceBuffer is updating or not + * + * @return {Boolean} the updating status of the SourceBuffer + */ + + }, { + key: 'updating', + value: function updating() { + return !this.sourceBuffer_ || this.sourceBuffer_.updating || this.pendingCallback_; + } + + /** + * Set/get the timestampoffset on the SourceBuffer + * + * @return {Number} the timestamp offset + */ + + }, { + key: 'timestampOffset', + value: function timestampOffset(offset) { + var _this6 = this; + + if (typeof offset !== 'undefined') { + this.queueCallback_(function () { + _this6.sourceBuffer_.timestampOffset = offset; + }); + this.timestampOffset_ = offset; + } + return this.timestampOffset_; + } + + /** + * Queue a callback to run + */ + + }, { + key: 'queueCallback_', + value: function queueCallback_(callback, done) { + this.callbacks_.push([callback.bind(this), done]); + this.runCallback_(); + } + + /** + * Run a queued callback + */ + + }, { + key: 'runCallback_', + value: function runCallback_() { + var callbacks = void 0; + + if (!this.updating() && this.callbacks_.length && this.started_) { + callbacks = this.callbacks_.shift(); + this.pendingCallback_ = callbacks[1]; + callbacks[0](); + } + } + + /** + * dispose of the source updater and the underlying sourceBuffer + */ + + }, { + key: 'dispose', + value: function dispose() { + this.sourceBuffer_.removeEventListener('updateend', this.onUpdateendCallback_); + if (this.sourceBuffer_ && this.mediaSource.readyState === 'open') { + this.sourceBuffer_.abort(); + } + } + }]); + return SourceUpdater; + }(); + + var Config = { + GOAL_BUFFER_LENGTH: 30, + MAX_GOAL_BUFFER_LENGTH: 60, + GOAL_BUFFER_LENGTH_RATE: 1, + // A fudge factor to apply to advertised playlist bitrates to account for + // temporary flucations in client bandwidth + BANDWIDTH_VARIANCE: 1.2, + // How much of the buffer must be filled before we consider upswitching + BUFFER_LOW_WATER_LINE: 0, + MAX_BUFFER_LOW_WATER_LINE: 30, + BUFFER_LOW_WATER_LINE_RATE: 1 + }; + + var REQUEST_ERRORS = { + FAILURE: 2, + TIMEOUT: -101, + ABORTED: -102 + }; + + /** + * Turns segment byterange into a string suitable for use in + * HTTP Range requests + * + * @param {Object} byterange - an object with two values defining the start and end + * of a byte-range + */ + var byterangeStr = function byterangeStr(byterange) { + var byterangeStart = void 0; + var byterangeEnd = void 0; + + // `byterangeEnd` is one less than `offset + length` because the HTTP range + // header uses inclusive ranges + byterangeEnd = byterange.offset + byterange.length - 1; + byterangeStart = byterange.offset; + return 'bytes=' + byterangeStart + '-' + byterangeEnd; + }; + + /** + * Defines headers for use in the xhr request for a particular segment. + * + * @param {Object} segment - a simplified copy of the segmentInfo object + * from SegmentLoader + */ + var segmentXhrHeaders = function segmentXhrHeaders(segment) { + var headers = {}; + + if (segment.byterange) { + headers.Range = byterangeStr(segment.byterange); + } + return headers; + }; + + /** + * Abort all requests + * + * @param {Object} activeXhrs - an object that tracks all XHR requests + */ + var abortAll = function abortAll(activeXhrs) { + activeXhrs.forEach(function (xhr) { + xhr.abort(); + }); + }; + + /** + * Gather important bandwidth stats once a request has completed + * + * @param {Object} request - the XHR request from which to gather stats + */ + var getRequestStats = function getRequestStats(request) { + return { + bandwidth: request.bandwidth, + bytesReceived: request.bytesReceived || 0, + roundTripTime: request.roundTripTime || 0 + }; + }; + + /** + * If possible gather bandwidth stats as a request is in + * progress + * + * @param {Event} progressEvent - an event object from an XHR's progress event + */ + var getProgressStats = function getProgressStats(progressEvent) { + var request = progressEvent.target; + var roundTripTime = Date.now() - request.requestTime; + var stats = { + bandwidth: Infinity, + bytesReceived: 0, + roundTripTime: roundTripTime || 0 + }; + + stats.bytesReceived = progressEvent.loaded; + // This can result in Infinity if stats.roundTripTime is 0 but that is ok + // because we should only use bandwidth stats on progress to determine when + // abort a request early due to insufficient bandwidth + stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000); + + return stats; + }; + + /** + * Handle all error conditions in one place and return an object + * with all the information + * + * @param {Error|null} error - if non-null signals an error occured with the XHR + * @param {Object} request - the XHR request that possibly generated the error + */ + var handleErrors = function handleErrors(error, request) { + if (request.timedout) { + return { + status: request.status, + message: 'HLS request timed-out at URL: ' + request.uri, + code: REQUEST_ERRORS.TIMEOUT, + xhr: request + }; + } + + if (request.aborted) { + return { + status: request.status, + message: 'HLS request aborted at URL: ' + request.uri, + code: REQUEST_ERRORS.ABORTED, + xhr: request + }; + } + + if (error) { + return { + status: request.status, + message: 'HLS request errored at URL: ' + request.uri, + code: REQUEST_ERRORS.FAILURE, + xhr: request + }; + } + + return null; + }; + + /** + * Handle responses for key data and convert the key data to the correct format + * for the decryption step later + * + * @param {Object} segment - a simplified copy of the segmentInfo object + * from SegmentLoader + * @param {Function} finishProcessingFn - a callback to execute to continue processing + * this request + */ + var handleKeyResponse = function handleKeyResponse(segment, finishProcessingFn) { + return function (error, request) { + var response = request.response; + var errorObj = handleErrors(error, request); + + if (errorObj) { + return finishProcessingFn(errorObj, segment); + } + + if (response.byteLength !== 16) { + return finishProcessingFn({ + status: request.status, + message: 'Invalid HLS key at URL: ' + request.uri, + code: REQUEST_ERRORS.FAILURE, + xhr: request + }, segment); + } + + var view = new DataView(response); + + segment.key.bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]); + return finishProcessingFn(null, segment); + }; + }; + + /** + * Handle init-segment responses + * + * @param {Object} segment - a simplified copy of the segmentInfo object + * from SegmentLoader + * @param {Function} finishProcessingFn - a callback to execute to continue processing + * this request + */ + var handleInitSegmentResponse = function handleInitSegmentResponse(segment, captionParser, finishProcessingFn) { + return function (error, request) { + var response = request.response; + var errorObj = handleErrors(error, request); + + if (errorObj) { + return finishProcessingFn(errorObj, segment); + } + + // stop processing if received empty content + if (response.byteLength === 0) { + return finishProcessingFn({ + status: request.status, + message: 'Empty HLS segment content at URL: ' + request.uri, + code: REQUEST_ERRORS.FAILURE, + xhr: request + }, segment); + } + + segment.map.bytes = new Uint8Array(request.response); + + // Initialize CaptionParser if it hasn't been yet + if (!captionParser.isInitialized()) { + captionParser.init(); + } + + segment.map.timescales = probe.timescale(segment.map.bytes); + segment.map.videoTrackIds = probe.videoTrackIds(segment.map.bytes); + + return finishProcessingFn(null, segment); + }; + }; + + /** + * Response handler for segment-requests being sure to set the correct + * property depending on whether the segment is encryped or not + * Also records and keeps track of stats that are used for ABR purposes + * + * @param {Object} segment - a simplified copy of the segmentInfo object + * from SegmentLoader + * @param {Function} finishProcessingFn - a callback to execute to continue processing + * this request + */ + var handleSegmentResponse = function handleSegmentResponse(segment, captionParser, finishProcessingFn) { + return function (error, request) { + var response = request.response; + var errorObj = handleErrors(error, request); + var parsed = void 0; + + if (errorObj) { + return finishProcessingFn(errorObj, segment); + } + + // stop processing if received empty content + if (response.byteLength === 0) { + return finishProcessingFn({ + status: request.status, + message: 'Empty HLS segment content at URL: ' + request.uri, + code: REQUEST_ERRORS.FAILURE, + xhr: request + }, segment); + } + + segment.stats = getRequestStats(request); + + if (segment.key) { + segment.encryptedBytes = new Uint8Array(request.response); + } else { + segment.bytes = new Uint8Array(request.response); + } + + // This is likely an FMP4 and has the init segment. + // Run through the CaptionParser in case there are captions. + if (segment.map && segment.map.bytes) { + // Initialize CaptionParser if it hasn't been yet + if (!captionParser.isInitialized()) { + captionParser.init(); + } + + parsed = captionParser.parse(segment.bytes, segment.map.videoTrackIds, segment.map.timescales); + + if (parsed && parsed.captions) { + segment.captionStreams = parsed.captionStreams; + segment.fmp4Captions = parsed.captions; + } + } + + return finishProcessingFn(null, segment); + }; + }; + + /** + * Decrypt the segment via the decryption web worker + * + * @param {WebWorker} decrypter - a WebWorker interface to AES-128 decryption routines + * @param {Object} segment - a simplified copy of the segmentInfo object + * from SegmentLoader + * @param {Function} doneFn - a callback that is executed after decryption has completed + */ + var decryptSegment = function decryptSegment(decrypter, segment, doneFn) { + var decryptionHandler = function decryptionHandler(event) { + if (event.data.source === segment.requestId) { + decrypter.removeEventListener('message', decryptionHandler); + var decrypted = event.data.decrypted; + + segment.bytes = new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength); + return doneFn(null, segment); + } + }; + + decrypter.addEventListener('message', decryptionHandler); + + // this is an encrypted segment + // incrementally decrypt the segment + decrypter.postMessage(createTransferableMessage({ + source: segment.requestId, + encrypted: segment.encryptedBytes, + key: segment.key.bytes, + iv: segment.key.iv + }), [segment.encryptedBytes.buffer, segment.key.bytes.buffer]); + }; + + /** + * The purpose of this function is to get the most pertinent error from the + * array of errors. + * For instance if a timeout and two aborts occur, then the aborts were + * likely triggered by the timeout so return that error object. + */ + var getMostImportantError = function getMostImportantError(errors) { + return errors.reduce(function (prev, err) { + return err.code > prev.code ? err : prev; + }); + }; + + /** + * This function waits for all XHRs to finish (with either success or failure) + * before continueing processing via it's callback. The function gathers errors + * from each request into a single errors array so that the error status for + * each request can be examined later. + * + * @param {Object} activeXhrs - an object that tracks all XHR requests + * @param {WebWorker} decrypter - a WebWorker interface to AES-128 decryption routines + * @param {Function} doneFn - a callback that is executed after all resources have been + * downloaded and any decryption completed + */ + var waitForCompletion = function waitForCompletion(activeXhrs, decrypter, doneFn) { + var errors = []; + var count = 0; + + return function (error, segment) { + if (error) { + // If there are errors, we have to abort any outstanding requests + abortAll(activeXhrs); + errors.push(error); + } + count += 1; + + if (count === activeXhrs.length) { + // Keep track of when *all* of the requests have completed + segment.endOfAllRequests = Date.now(); + + if (errors.length > 0) { + var worstError = getMostImportantError(errors); + + return doneFn(worstError, segment); + } + if (segment.encryptedBytes) { + return decryptSegment(decrypter, segment, doneFn); + } + // Otherwise, everything is ready just continue + return doneFn(null, segment); + } + }; + }; + + /** + * Simple progress event callback handler that gathers some stats before + * executing a provided callback with the `segment` object + * + * @param {Object} segment - a simplified copy of the segmentInfo object + * from SegmentLoader + * @param {Function} progressFn - a callback that is executed each time a progress event + * is received + * @param {Event} event - the progress event object from XMLHttpRequest + */ + var handleProgress = function handleProgress(segment, progressFn) { + return function (event) { + segment.stats = videojs$1.mergeOptions(segment.stats, getProgressStats(event)); + + // record the time that we receive the first byte of data + if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) { + segment.stats.firstBytesReceivedAt = Date.now(); + } + + return progressFn(event, segment); + }; + }; + + /** + * Load all resources and does any processing necessary for a media-segment + * + * Features: + * decrypts the media-segment if it has a key uri and an iv + * aborts *all* requests if *any* one request fails + * + * The segment object, at minimum, has the following format: + * { + * resolvedUri: String, + * [byterange]: { + * offset: Number, + * length: Number + * }, + * [key]: { + * resolvedUri: String + * [byterange]: { + * offset: Number, + * length: Number + * }, + * iv: { + * bytes: Uint32Array + * } + * }, + * [map]: { + * resolvedUri: String, + * [byterange]: { + * offset: Number, + * length: Number + * }, + * [bytes]: Uint8Array + * } + * } + * ...where [name] denotes optional properties + * + * @param {Function} xhr - an instance of the xhr wrapper in xhr.js + * @param {Object} xhrOptions - the base options to provide to all xhr requests + * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 + * decryption routines + * @param {Object} segment - a simplified copy of the segmentInfo object + * from SegmentLoader + * @param {Function} progressFn - a callback that receives progress events from the main + * segment's xhr request + * @param {Function} doneFn - a callback that is executed only once all requests have + * succeeded or failed + * @returns {Function} a function that, when invoked, immediately aborts all + * outstanding requests + */ + var mediaSegmentRequest = function mediaSegmentRequest(xhr, xhrOptions, decryptionWorker, captionParser, segment, progressFn, doneFn) { + var activeXhrs = []; + var finishProcessingFn = waitForCompletion(activeXhrs, decryptionWorker, doneFn); + + // optionally, request the decryption key + if (segment.key) { + var keyRequestOptions = videojs$1.mergeOptions(xhrOptions, { + uri: segment.key.resolvedUri, + responseType: 'arraybuffer' + }); + var keyRequestCallback = handleKeyResponse(segment, finishProcessingFn); + var keyXhr = xhr(keyRequestOptions, keyRequestCallback); + + activeXhrs.push(keyXhr); + } + + // optionally, request the associated media init segment + if (segment.map && !segment.map.bytes) { + var initSegmentOptions = videojs$1.mergeOptions(xhrOptions, { + uri: segment.map.resolvedUri, + responseType: 'arraybuffer', + headers: segmentXhrHeaders(segment.map) + }); + var initSegmentRequestCallback = handleInitSegmentResponse(segment, captionParser, finishProcessingFn); + var initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback); + + activeXhrs.push(initSegmentXhr); + } + + var segmentRequestOptions = videojs$1.mergeOptions(xhrOptions, { + uri: segment.resolvedUri, + responseType: 'arraybuffer', + headers: segmentXhrHeaders(segment) + }); + var segmentRequestCallback = handleSegmentResponse(segment, captionParser, finishProcessingFn); + var segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback); + + segmentXhr.addEventListener('progress', handleProgress(segment, progressFn)); + activeXhrs.push(segmentXhr); + + return function () { + return abortAll(activeXhrs); + }; + }; + + // Utilities + + /** + * Returns the CSS value for the specified property on an element + * using `getComputedStyle`. Firefox has a long-standing issue where + * getComputedStyle() may return null when running in an iframe with + * `display: none`. + * + * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397 + * @param {HTMLElement} el the htmlelement to work on + * @param {string} the proprety to get the style for + */ + var safeGetComputedStyle = function safeGetComputedStyle(el, property) { + var result = void 0; + + if (!el) { + return ''; + } + + result = window_1.getComputedStyle(el); + if (!result) { + return ''; + } + + return result[property]; + }; + + /** + * Resuable stable sort function + * + * @param {Playlists} array + * @param {Function} sortFn Different comparators + * @function stableSort + */ + var stableSort = function stableSort(array, sortFn) { + var newArray = array.slice(); + + array.sort(function (left, right) { + var cmp = sortFn(left, right); + + if (cmp === 0) { + return newArray.indexOf(left) - newArray.indexOf(right); + } + return cmp; + }); + }; + + /** + * A comparator function to sort two playlist object by bandwidth. + * + * @param {Object} left a media playlist object + * @param {Object} right a media playlist object + * @return {Number} Greater than zero if the bandwidth attribute of + * left is greater than the corresponding attribute of right. Less + * than zero if the bandwidth of right is greater than left and + * exactly zero if the two are equal. + */ + var comparePlaylistBandwidth = function comparePlaylistBandwidth(left, right) { + var leftBandwidth = void 0; + var rightBandwidth = void 0; + + if (left.attributes.BANDWIDTH) { + leftBandwidth = left.attributes.BANDWIDTH; + } + leftBandwidth = leftBandwidth || window_1.Number.MAX_VALUE; + if (right.attributes.BANDWIDTH) { + rightBandwidth = right.attributes.BANDWIDTH; + } + rightBandwidth = rightBandwidth || window_1.Number.MAX_VALUE; + + return leftBandwidth - rightBandwidth; + }; + + /** + * A comparator function to sort two playlist object by resolution (width). + * @param {Object} left a media playlist object + * @param {Object} right a media playlist object + * @return {Number} Greater than zero if the resolution.width attribute of + * left is greater than the corresponding attribute of right. Less + * than zero if the resolution.width of right is greater than left and + * exactly zero if the two are equal. + */ + var comparePlaylistResolution = function comparePlaylistResolution(left, right) { + var leftWidth = void 0; + var rightWidth = void 0; + + if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) { + leftWidth = left.attributes.RESOLUTION.width; + } + + leftWidth = leftWidth || window_1.Number.MAX_VALUE; + + if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) { + rightWidth = right.attributes.RESOLUTION.width; + } + + rightWidth = rightWidth || window_1.Number.MAX_VALUE; + + // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions + // have the same media dimensions/ resolution + if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) { + return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH; + } + return leftWidth - rightWidth; + }; + + /** + * Chooses the appropriate media playlist based on bandwidth and player size + * + * @param {Object} master + * Object representation of the master manifest + * @param {Number} playerBandwidth + * Current calculated bandwidth of the player + * @param {Number} playerWidth + * Current width of the player element + * @param {Number} playerHeight + * Current height of the player element + * @return {Playlist} the highest bitrate playlist less than the + * currently detected bandwidth, accounting for some amount of + * bandwidth variance + */ + var simpleSelector = function simpleSelector(master, playerBandwidth, playerWidth, playerHeight) { + // convert the playlists to an intermediary representation to make comparisons easier + var sortedPlaylistReps = master.playlists.map(function (playlist) { + var width = void 0; + var height = void 0; + var bandwidth = void 0; + + width = playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width; + height = playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height; + bandwidth = playlist.attributes.BANDWIDTH; + + bandwidth = bandwidth || window_1.Number.MAX_VALUE; + + return { + bandwidth: bandwidth, + width: width, + height: height, + playlist: playlist + }; + }); + + stableSort(sortedPlaylistReps, function (left, right) { + return left.bandwidth - right.bandwidth; + }); + + // filter out any playlists that have been excluded due to + // incompatible configurations + sortedPlaylistReps = sortedPlaylistReps.filter(function (rep) { + return !Playlist.isIncompatible(rep.playlist); + }); + + // filter out any playlists that have been disabled manually through the representations + // api or blacklisted temporarily due to playback errors. + var enabledPlaylistReps = sortedPlaylistReps.filter(function (rep) { + return Playlist.isEnabled(rep.playlist); + }); + + if (!enabledPlaylistReps.length) { + // if there are no enabled playlists, then they have all been blacklisted or disabled + // by the user through the representations api. In this case, ignore blacklisting and + // fallback to what the user wants by using playlists the user has not disabled. + enabledPlaylistReps = sortedPlaylistReps.filter(function (rep) { + return !Playlist.isDisabled(rep.playlist); + }); + } + + // filter out any variant that has greater effective bitrate + // than the current estimated bandwidth + var bandwidthPlaylistReps = enabledPlaylistReps.filter(function (rep) { + return rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth; + }); + + var highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; + + // get all of the renditions with the same (highest) bandwidth + // and then taking the very first element + var bandwidthBestRep = bandwidthPlaylistReps.filter(function (rep) { + return rep.bandwidth === highestRemainingBandwidthRep.bandwidth; + })[0]; + + // filter out playlists without resolution information + var haveResolution = bandwidthPlaylistReps.filter(function (rep) { + return rep.width && rep.height; + }); + + // sort variants by resolution + stableSort(haveResolution, function (left, right) { + return left.width - right.width; + }); + + // if we have the exact resolution as the player use it + var resolutionBestRepList = haveResolution.filter(function (rep) { + return rep.width === playerWidth && rep.height === playerHeight; + }); + + highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; + // ensure that we pick the highest bandwidth variant that have exact resolution + var resolutionBestRep = resolutionBestRepList.filter(function (rep) { + return rep.bandwidth === highestRemainingBandwidthRep.bandwidth; + })[0]; + + var resolutionPlusOneList = void 0; + var resolutionPlusOneSmallest = void 0; + var resolutionPlusOneRep = void 0; + + // find the smallest variant that is larger than the player + // if there is no match of exact resolution + if (!resolutionBestRep) { + resolutionPlusOneList = haveResolution.filter(function (rep) { + return rep.width > playerWidth || rep.height > playerHeight; + }); + + // find all the variants have the same smallest resolution + resolutionPlusOneSmallest = resolutionPlusOneList.filter(function (rep) { + return rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height; + }); + + // ensure that we also pick the highest bandwidth variant that + // is just-larger-than the video player + highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1]; + resolutionPlusOneRep = resolutionPlusOneSmallest.filter(function (rep) { + return rep.bandwidth === highestRemainingBandwidthRep.bandwidth; + })[0]; + } + + // fallback chain of variants + var chosenRep = resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0]; + + return chosenRep ? chosenRep.playlist : null; + }; + + // Playlist Selectors + + /** + * Chooses the appropriate media playlist based on the most recent + * bandwidth estimate and the player size. + * + * Expects to be called within the context of an instance of HlsHandler + * + * @return {Playlist} the highest bitrate playlist less than the + * currently detected bandwidth, accounting for some amount of + * bandwidth variance + */ + var lastBandwidthSelector = function lastBandwidthSelector() { + return simpleSelector(this.playlists.master, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10), parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10)); + }; + + /** + * Chooses the appropriate media playlist based on the potential to rebuffer + * + * @param {Object} settings + * Object of information required to use this selector + * @param {Object} settings.master + * Object representation of the master manifest + * @param {Number} settings.currentTime + * The current time of the player + * @param {Number} settings.bandwidth + * Current measured bandwidth + * @param {Number} settings.duration + * Duration of the media + * @param {Number} settings.segmentDuration + * Segment duration to be used in round trip time calculations + * @param {Number} settings.timeUntilRebuffer + * Time left in seconds until the player has to rebuffer + * @param {Number} settings.currentTimeline + * The current timeline segments are being loaded from + * @param {SyncController} settings.syncController + * SyncController for determining if we have a sync point for a given playlist + * @return {Object|null} + * {Object} return.playlist + * The highest bandwidth playlist with the least amount of rebuffering + * {Number} return.rebufferingImpact + * The amount of time in seconds switching to this playlist will rebuffer. A + * negative value means that switching will cause zero rebuffering. + */ + var minRebufferMaxBandwidthSelector = function minRebufferMaxBandwidthSelector(settings) { + var master = settings.master, + currentTime = settings.currentTime, + bandwidth = settings.bandwidth, + duration$$1 = settings.duration, + segmentDuration = settings.segmentDuration, + timeUntilRebuffer = settings.timeUntilRebuffer, + currentTimeline = settings.currentTimeline, + syncController = settings.syncController; + + // filter out any playlists that have been excluded due to + // incompatible configurations + + var compatiblePlaylists = master.playlists.filter(function (playlist) { + return !Playlist.isIncompatible(playlist); + }); + + // filter out any playlists that have been disabled manually through the representations + // api or blacklisted temporarily due to playback errors. + var enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled); + + if (!enabledPlaylists.length) { + // if there are no enabled playlists, then they have all been blacklisted or disabled + // by the user through the representations api. In this case, ignore blacklisting and + // fallback to what the user wants by using playlists the user has not disabled. + enabledPlaylists = compatiblePlaylists.filter(function (playlist) { + return !Playlist.isDisabled(playlist); + }); + } + + var bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH')); + + var rebufferingEstimates = bandwidthPlaylists.map(function (playlist) { + var syncPoint = syncController.getSyncPoint(playlist, duration$$1, currentTimeline, currentTime); + // If there is no sync point for this playlist, switching to it will require a + // sync request first. This will double the request time + var numRequests = syncPoint ? 1 : 2; + var requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist); + var rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer; + + return { + playlist: playlist, + rebufferingImpact: rebufferingImpact + }; + }); + + var noRebufferingPlaylists = rebufferingEstimates.filter(function (estimate) { + return estimate.rebufferingImpact <= 0; + }); + + // Sort by bandwidth DESC + stableSort(noRebufferingPlaylists, function (a, b) { + return comparePlaylistBandwidth(b.playlist, a.playlist); + }); + + if (noRebufferingPlaylists.length) { + return noRebufferingPlaylists[0]; + } + + stableSort(rebufferingEstimates, function (a, b) { + return a.rebufferingImpact - b.rebufferingImpact; + }); + + return rebufferingEstimates[0] || null; + }; + + /** + * Chooses the appropriate media playlist, which in this case is the lowest bitrate + * one with video. If no renditions with video exist, return the lowest audio rendition. + * + * Expects to be called within the context of an instance of HlsHandler + * + * @return {Object|null} + * {Object} return.playlist + * The lowest bitrate playlist that contains a video codec. If no such rendition + * exists pick the lowest audio rendition. + */ + var lowestBitrateCompatibleVariantSelector = function lowestBitrateCompatibleVariantSelector() { + // filter out any playlists that have been excluded due to + // incompatible configurations or playback errors + var playlists = this.playlists.master.playlists.filter(Playlist.isEnabled); + + // Sort ascending by bitrate + stableSort(playlists, function (a, b) { + return comparePlaylistBandwidth(a, b); + }); + + // Parse and assume that playlists with no video codec have no video + // (this is not necessarily true, although it is generally true). + // + // If an entire manifest has no valid videos everything will get filtered + // out. + var playlistsWithVideo = playlists.filter(function (playlist) { + return parseCodecs(playlist.attributes.CODECS).videoCodec; + }); + + return playlistsWithVideo[0] || null; + }; + + /** + * Create captions text tracks on video.js if they do not exist + * + * @param {Object} inbandTextTracks a reference to current inbandTextTracks + * @param {Object} tech the video.js tech + * @param {Object} captionStreams the caption streams to create + * @private + */ + var createCaptionsTrackIfNotExists = function createCaptionsTrackIfNotExists(inbandTextTracks, tech, captionStreams) { + for (var trackId in captionStreams) { + if (!inbandTextTracks[trackId]) { + tech.trigger({ type: 'usage', name: 'hls-608' }); + var track = tech.textTracks().getTrackById(trackId); + + if (track) { + // Resuse an existing track with a CC# id because this was + // very likely created by videojs-contrib-hls from information + // in the m3u8 for us to use + inbandTextTracks[trackId] = track; + } else { + // Otherwise, create a track with the default `CC#` label and + // without a language + inbandTextTracks[trackId] = tech.addRemoteTextTrack({ + kind: 'captions', + id: trackId, + label: trackId + }, false).track; + } + } + } + }; + + var addCaptionData = function addCaptionData(_ref) { + var inbandTextTracks = _ref.inbandTextTracks, + captionArray = _ref.captionArray, + timestampOffset = _ref.timestampOffset; + + if (!captionArray) { + return; + } + + var Cue = window.WebKitDataCue || window.VTTCue; + + captionArray.forEach(function (caption) { + var track = caption.stream; + var startTime = caption.startTime; + var endTime = caption.endTime; + + if (!inbandTextTracks[track]) { + return; + } + + startTime += timestampOffset; + endTime += timestampOffset; + + inbandTextTracks[track].addCue(new Cue(startTime, endTime, caption.text)); + }); + }; + + /** + * @file segment-loader.js + */ + + // in ms + var CHECK_BUFFER_DELAY = 500; + + /** + * Determines if we should call endOfStream on the media source based + * on the state of the buffer or if appened segment was the final + * segment in the playlist. + * + * @param {Object} playlist a media playlist object + * @param {Object} mediaSource the MediaSource object + * @param {Number} segmentIndex the index of segment we last appended + * @returns {Boolean} do we need to call endOfStream on the MediaSource + */ + var detectEndOfStream = function detectEndOfStream(playlist, mediaSource, segmentIndex) { + if (!playlist || !mediaSource) { + return false; + } + + var segments = playlist.segments; + + // determine a few boolean values to help make the branch below easier + // to read + var appendedLastSegment = segmentIndex === segments.length; + + // if we've buffered to the end of the video, we need to call endOfStream + // so that MediaSources can trigger the `ended` event when it runs out of + // buffered data instead of waiting for me + return playlist.endList && mediaSource.readyState === 'open' && appendedLastSegment; + }; + + var finite = function finite(num) { + return typeof num === 'number' && isFinite(num); + }; + + var illegalMediaSwitch = function illegalMediaSwitch(loaderType, startingMedia, newSegmentMedia) { + // Although these checks should most likely cover non 'main' types, for now it narrows + // the scope of our checks. + if (loaderType !== 'main' || !startingMedia || !newSegmentMedia) { + return null; + } + + if (!newSegmentMedia.containsAudio && !newSegmentMedia.containsVideo) { + return 'Neither audio nor video found in segment.'; + } + + if (startingMedia.containsVideo && !newSegmentMedia.containsVideo) { + return 'Only audio found in segment when we expected video.' + ' We can\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.'; + } + + if (!startingMedia.containsVideo && newSegmentMedia.containsVideo) { + return 'Video found in segment when we expected only audio.' + ' We can\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.'; + } + + return null; + }; + + /** + * Calculates a time value that is safe to remove from the back buffer without interupting + * playback. + * + * @param {TimeRange} seekable + * The current seekable range + * @param {Number} currentTime + * The current time of the player + * @param {Number} targetDuration + * The target duration of the current playlist + * @return {Number} + * Time that is safe to remove from the back buffer without interupting playback + */ + var safeBackBufferTrimTime = function safeBackBufferTrimTime(seekable$$1, currentTime, targetDuration) { + var removeToTime = void 0; + + if (seekable$$1.length && seekable$$1.start(0) > 0 && seekable$$1.start(0) < currentTime) { + // If we have a seekable range use that as the limit for what can be removed safely + removeToTime = seekable$$1.start(0); + } else { + // otherwise remove anything older than 30 seconds before the current play head + removeToTime = currentTime - 30; + } + + // Don't allow removing from the buffer within target duration of current time + // to avoid the possibility of removing the GOP currently being played which could + // cause playback stalls. + return Math.min(removeToTime, currentTime - targetDuration); + }; + + var segmentInfoString = function segmentInfoString(segmentInfo) { + var _segmentInfo$segment = segmentInfo.segment, + start = _segmentInfo$segment.start, + end = _segmentInfo$segment.end, + _segmentInfo$playlist = segmentInfo.playlist, + seq = _segmentInfo$playlist.mediaSequence, + id = _segmentInfo$playlist.id, + _segmentInfo$playlist2 = _segmentInfo$playlist.segments, + segments = _segmentInfo$playlist2 === undefined ? [] : _segmentInfo$playlist2, + index = segmentInfo.mediaIndex, + timeline = segmentInfo.timeline; + + return ['appending [' + index + '] of [' + seq + ', ' + (seq + segments.length) + '] from playlist [' + id + ']', '[' + start + ' => ' + end + '] in timeline [' + timeline + ']'].join(' '); + }; + + /** + * An object that manages segment loading and appending. + * + * @class SegmentLoader + * @param {Object} options required and optional options + * @extends videojs.EventTarget + */ + + var SegmentLoader = function (_videojs$EventTarget) { + inherits$3(SegmentLoader, _videojs$EventTarget); + + function SegmentLoader(settings) { + classCallCheck$3(this, SegmentLoader); + + // check pre-conditions + var _this = possibleConstructorReturn$3(this, (SegmentLoader.__proto__ || Object.getPrototypeOf(SegmentLoader)).call(this)); + + if (!settings) { + throw new TypeError('Initialization settings are required'); + } + if (typeof settings.currentTime !== 'function') { + throw new TypeError('No currentTime getter specified'); + } + if (!settings.mediaSource) { + throw new TypeError('No MediaSource specified'); + } + // public properties + _this.bandwidth = settings.bandwidth; + _this.throughput = { rate: 0, count: 0 }; + _this.roundTrip = NaN; + _this.resetStats_(); + _this.mediaIndex = null; + + // private settings + _this.hasPlayed_ = settings.hasPlayed; + _this.currentTime_ = settings.currentTime; + _this.seekable_ = settings.seekable; + _this.seeking_ = settings.seeking; + _this.duration_ = settings.duration; + _this.mediaSource_ = settings.mediaSource; + _this.hls_ = settings.hls; + _this.loaderType_ = settings.loaderType; + _this.startingMedia_ = void 0; + _this.segmentMetadataTrack_ = settings.segmentMetadataTrack; + _this.goalBufferLength_ = settings.goalBufferLength; + _this.sourceType_ = settings.sourceType; + _this.inbandTextTracks_ = settings.inbandTextTracks; + _this.state_ = 'INIT'; + + // private instance variables + _this.checkBufferTimeout_ = null; + _this.error_ = void 0; + _this.currentTimeline_ = -1; + _this.pendingSegment_ = null; + _this.mimeType_ = null; + _this.sourceUpdater_ = null; + _this.xhrOptions_ = null; + + // Fragmented mp4 playback + _this.activeInitSegmentId_ = null; + _this.initSegments_ = {}; + // Fmp4 CaptionParser + _this.captionParser_ = new mp4_6(); + + _this.decrypter_ = settings.decrypter; + + // Manages the tracking and generation of sync-points, mappings + // between a time in the display time and a segment index within + // a playlist + _this.syncController_ = settings.syncController; + _this.syncPoint_ = { + segmentIndex: 0, + time: 0 + }; + + _this.syncController_.on('syncinfoupdate', function () { + return _this.trigger('syncinfoupdate'); + }); + + _this.mediaSource_.addEventListener('sourceopen', function () { + return _this.ended_ = false; + }); + + // ...for determining the fetch location + _this.fetchAtBuffer_ = false; + + _this.logger_ = logger('SegmentLoader[' + _this.loaderType_ + ']'); + + Object.defineProperty(_this, 'state', { + get: function get$$1() { + return this.state_; + }, + set: function set$$1(newState) { + if (newState !== this.state_) { + this.logger_(this.state_ + ' -> ' + newState); + this.state_ = newState; + } + } + }); + return _this; + } + + /** + * reset all of our media stats + * + * @private + */ + + createClass$2(SegmentLoader, [{ + key: 'resetStats_', + value: function resetStats_() { + this.mediaBytesTransferred = 0; + this.mediaRequests = 0; + this.mediaRequestsAborted = 0; + this.mediaRequestsTimedout = 0; + this.mediaRequestsErrored = 0; + this.mediaTransferDuration = 0; + this.mediaSecondsLoaded = 0; + } + + /** + * dispose of the SegmentLoader and reset to the default state + */ + + }, { + key: 'dispose', + value: function dispose() { + this.state = 'DISPOSED'; + this.pause(); + this.abort_(); + if (this.sourceUpdater_) { + this.sourceUpdater_.dispose(); + } + this.resetStats_(); + this.captionParser_.reset(); + } + + /** + * abort anything that is currently doing on with the SegmentLoader + * and reset to a default state + */ + + }, { + key: 'abort', + value: function abort() { + if (this.state !== 'WAITING') { + if (this.pendingSegment_) { + this.pendingSegment_ = null; + } + return; + } + + this.abort_(); + + // We aborted the requests we were waiting on, so reset the loader's state to READY + // since we are no longer "waiting" on any requests. XHR callback is not always run + // when the request is aborted. This will prevent the loader from being stuck in the + // WAITING state indefinitely. + this.state = 'READY'; + + // don't wait for buffer check timeouts to begin fetching the + // next segment + if (!this.paused()) { + this.monitorBuffer_(); + } + } + + /** + * abort all pending xhr requests and null any pending segements + * + * @private + */ + + }, { + key: 'abort_', + value: function abort_() { + if (this.pendingSegment_) { + this.pendingSegment_.abortRequests(); + } + + // clear out the segment being processed + this.pendingSegment_ = null; + } + + /** + * set an error on the segment loader and null out any pending segements + * + * @param {Error} error the error to set on the SegmentLoader + * @return {Error} the error that was set or that is currently set + */ + + }, { + key: 'error', + value: function error(_error) { + if (typeof _error !== 'undefined') { + this.error_ = _error; + } + + this.pendingSegment_ = null; + return this.error_; + } + }, { + key: 'endOfStream', + value: function endOfStream() { + this.ended_ = true; + this.pause(); + this.trigger('ended'); + } + + /** + * Indicates which time ranges are buffered + * + * @return {TimeRange} + * TimeRange object representing the current buffered ranges + */ + + }, { + key: 'buffered_', + value: function buffered_() { + if (!this.sourceUpdater_) { + return videojs$1.createTimeRanges(); + } + + return this.sourceUpdater_.buffered(); + } + + /** + * Gets and sets init segment for the provided map + * + * @param {Object} map + * The map object representing the init segment to get or set + * @param {Boolean=} set + * If true, the init segment for the provided map should be saved + * @return {Object} + * map object for desired init segment + */ + + }, { + key: 'initSegment', + value: function initSegment(map) { + var set$$1 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false; + + if (!map) { + return null; + } + + var id = initSegmentId(map); + var storedMap = this.initSegments_[id]; + + if (set$$1 && !storedMap && map.bytes) { + this.initSegments_[id] = storedMap = { + resolvedUri: map.resolvedUri, + byterange: map.byterange, + bytes: map.bytes, + timescales: map.timescales, + videoTrackIds: map.videoTrackIds + }; + } + + return storedMap || map; + } + + /** + * Returns true if all configuration required for loading is present, otherwise false. + * + * @return {Boolean} True if the all configuration is ready for loading + * @private + */ + + }, { + key: 'couldBeginLoading_', + value: function couldBeginLoading_() { + return this.playlist_ && ( + // the source updater is created when init_ is called, so either having a + // source updater or being in the INIT state with a mimeType is enough + // to say we have all the needed configuration to start loading. + this.sourceUpdater_ || this.mimeType_ && this.state === 'INIT') && !this.paused(); + } + + /** + * load a playlist and start to fill the buffer + */ + + }, { + key: 'load', + value: function load() { + // un-pause + this.monitorBuffer_(); + + // if we don't have a playlist yet, keep waiting for one to be + // specified + if (!this.playlist_) { + return; + } + + // not sure if this is the best place for this + this.syncController_.setDateTimeMapping(this.playlist_); + + // if all the configuration is ready, initialize and begin loading + if (this.state === 'INIT' && this.couldBeginLoading_()) { + return this.init_(); + } + + // if we're in the middle of processing a segment already, don't + // kick off an additional segment request + if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') { + return; + } + + this.state = 'READY'; + } + + /** + * Once all the starting parameters have been specified, begin + * operation. This method should only be invoked from the INIT + * state. + * + * @private + */ + + }, { + key: 'init_', + value: function init_() { + this.state = 'READY'; + this.sourceUpdater_ = new SourceUpdater(this.mediaSource_, this.mimeType_, this.loaderType_, this.sourceBufferEmitter_); + this.resetEverything(); + return this.monitorBuffer_(); + } + + /** + * set a playlist on the segment loader + * + * @param {PlaylistLoader} media the playlist to set on the segment loader + */ + + }, { + key: 'playlist', + value: function playlist(newPlaylist) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + if (!newPlaylist) { + return; + } + + var oldPlaylist = this.playlist_; + var segmentInfo = this.pendingSegment_; + + this.playlist_ = newPlaylist; + this.xhrOptions_ = options; + + // when we haven't started playing yet, the start of a live playlist + // is always our zero-time so force a sync update each time the playlist + // is refreshed from the server + if (!this.hasPlayed_()) { + newPlaylist.syncInfo = { + mediaSequence: newPlaylist.mediaSequence, + time: 0 + }; + } + + var oldId = oldPlaylist ? oldPlaylist.id : null; + + this.logger_('playlist update [' + oldId + ' => ' + newPlaylist.id + ']'); + + // in VOD, this is always a rendition switch (or we updated our syncInfo above) + // in LIVE, we always want to update with new playlists (including refreshes) + this.trigger('syncinfoupdate'); + + // if we were unpaused but waiting for a playlist, start + // buffering now + if (this.state === 'INIT' && this.couldBeginLoading_()) { + return this.init_(); + } + + if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) { + if (this.mediaIndex !== null) { + // we must "resync" the segment loader when we switch renditions and + // the segment loader is already synced to the previous rendition + this.resyncLoader(); + } + + // the rest of this function depends on `oldPlaylist` being defined + return; + } + + // we reloaded the same playlist so we are in a live scenario + // and we will likely need to adjust the mediaIndex + var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; + + this.logger_('live window shift [' + mediaSequenceDiff + ']'); + + // update the mediaIndex on the SegmentLoader + // this is important because we can abort a request and this value must be + // equal to the last appended mediaIndex + if (this.mediaIndex !== null) { + this.mediaIndex -= mediaSequenceDiff; + } + + // update the mediaIndex on the SegmentInfo object + // this is important because we will update this.mediaIndex with this value + // in `handleUpdateEnd_` after the segment has been successfully appended + if (segmentInfo) { + segmentInfo.mediaIndex -= mediaSequenceDiff; + + // we need to update the referenced segment so that timing information is + // saved for the new playlist's segment, however, if the segment fell off the + // playlist, we can leave the old reference and just lose the timing info + if (segmentInfo.mediaIndex >= 0) { + segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex]; + } + } + + this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist); + } + + /** + * Prevent the loader from fetching additional segments. If there + * is a segment request outstanding, it will finish processing + * before the loader halts. A segment loader can be unpaused by + * calling load(). + */ + + }, { + key: 'pause', + value: function pause() { + if (this.checkBufferTimeout_) { + window_1.clearTimeout(this.checkBufferTimeout_); + + this.checkBufferTimeout_ = null; + } + } + + /** + * Returns whether the segment loader is fetching additional + * segments when given the opportunity. This property can be + * modified through calls to pause() and load(). + */ + + }, { + key: 'paused', + value: function paused() { + return this.checkBufferTimeout_ === null; + } + + /** + * create/set the following mimetype on the SourceBuffer through a + * SourceUpdater + * + * @param {String} mimeType the mime type string to use + * @param {Object} sourceBufferEmitter an event emitter that fires when a source buffer + * is added to the media source + */ + + }, { + key: 'mimeType', + value: function mimeType(_mimeType, sourceBufferEmitter) { + if (this.mimeType_) { + return; + } + + this.mimeType_ = _mimeType; + this.sourceBufferEmitter_ = sourceBufferEmitter; + // if we were unpaused but waiting for a sourceUpdater, start + // buffering now + if (this.state === 'INIT' && this.couldBeginLoading_()) { + this.init_(); + } + } + + /** + * Delete all the buffered data and reset the SegmentLoader + * @param {Function} [done] an optional callback to be executed when the remove + * operation is complete + */ + + }, { + key: 'resetEverything', + value: function resetEverything(done) { + this.ended_ = false; + this.resetLoader(); + this.remove(0, this.duration_(), done); + // clears fmp4 captions + this.captionParser_.clearAllCaptions(); + this.trigger('reseteverything'); + } + + /** + * Force the SegmentLoader to resync and start loading around the currentTime instead + * of starting at the end of the buffer + * + * Useful for fast quality changes + */ + + }, { + key: 'resetLoader', + value: function resetLoader() { + this.fetchAtBuffer_ = false; + this.resyncLoader(); + } + + /** + * Force the SegmentLoader to restart synchronization and make a conservative guess + * before returning to the simple walk-forward method + */ + + }, { + key: 'resyncLoader', + value: function resyncLoader() { + this.mediaIndex = null; + this.syncPoint_ = null; + this.abort(); + } + + /** + * Remove any data in the source buffer between start and end times + * @param {Number} start - the start time of the region to remove from the buffer + * @param {Number} end - the end time of the region to remove from the buffer + * @param {Function} [done] - an optional callback to be executed when the remove + * operation is complete + */ + + }, { + key: 'remove', + value: function remove(start, end, done) { + if (this.sourceUpdater_) { + this.sourceUpdater_.remove(start, end, done); + } + removeCuesFromTrack(start, end, this.segmentMetadataTrack_); + + if (this.inbandTextTracks_) { + for (var id in this.inbandTextTracks_) { + removeCuesFromTrack(start, end, this.inbandTextTracks_[id]); + } + } + } + + /** + * (re-)schedule monitorBufferTick_ to run as soon as possible + * + * @private + */ + + }, { + key: 'monitorBuffer_', + value: function monitorBuffer_() { + if (this.checkBufferTimeout_) { + window_1.clearTimeout(this.checkBufferTimeout_); + } + + this.checkBufferTimeout_ = window_1.setTimeout(this.monitorBufferTick_.bind(this), 1); + } + + /** + * As long as the SegmentLoader is in the READY state, periodically + * invoke fillBuffer_(). + * + * @private + */ + + }, { + key: 'monitorBufferTick_', + value: function monitorBufferTick_() { + if (this.state === 'READY') { + this.fillBuffer_(); + } + + if (this.checkBufferTimeout_) { + window_1.clearTimeout(this.checkBufferTimeout_); + } + + this.checkBufferTimeout_ = window_1.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY); + } + + /** + * fill the buffer with segements unless the sourceBuffers are + * currently updating + * + * Note: this function should only ever be called by monitorBuffer_ + * and never directly + * + * @private + */ + + }, { + key: 'fillBuffer_', + value: function fillBuffer_() { + if (this.sourceUpdater_.updating()) { + return; + } + + if (!this.syncPoint_) { + this.syncPoint_ = this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_()); + } + + // see if we need to begin loading immediately + var segmentInfo = this.checkBuffer_(this.buffered_(), this.playlist_, this.mediaIndex, this.hasPlayed_(), this.currentTime_(), this.syncPoint_); + + if (!segmentInfo) { + return; + } + + var isEndOfStream = detectEndOfStream(this.playlist_, this.mediaSource_, segmentInfo.mediaIndex); + + if (isEndOfStream) { + this.endOfStream(); + return; + } + + if (segmentInfo.mediaIndex === this.playlist_.segments.length - 1 && this.mediaSource_.readyState === 'ended' && !this.seeking_()) { + return; + } + + // We will need to change timestampOffset of the sourceBuffer if either of + // the following conditions are true: + // - The segment.timeline !== this.currentTimeline + // (we are crossing a discontinuity somehow) + // - The "timestampOffset" for the start of this segment is less than + // the currently set timestampOffset + // Also, clear captions if we are crossing a discontinuity boundary + if (segmentInfo.timeline !== this.currentTimeline_ || segmentInfo.startOfSegment !== null && segmentInfo.startOfSegment < this.sourceUpdater_.timestampOffset()) { + this.syncController_.reset(); + segmentInfo.timestampOffset = segmentInfo.startOfSegment; + this.captionParser_.clearAllCaptions(); + } + + this.loadSegment_(segmentInfo); + } + + /** + * Determines what segment request should be made, given current playback + * state. + * + * @param {TimeRanges} buffered - the state of the buffer + * @param {Object} playlist - the playlist object to fetch segments from + * @param {Number} mediaIndex - the previous mediaIndex fetched or null + * @param {Boolean} hasPlayed - a flag indicating whether we have played or not + * @param {Number} currentTime - the playback position in seconds + * @param {Object} syncPoint - a segment info object that describes the + * @returns {Object} a segment request object that describes the segment to load + */ + + }, { + key: 'checkBuffer_', + value: function checkBuffer_(buffered, playlist, mediaIndex, hasPlayed, currentTime, syncPoint) { + var lastBufferedEnd = 0; + var startOfSegment = void 0; + + if (buffered.length) { + lastBufferedEnd = buffered.end(buffered.length - 1); + } + + var bufferedTime = Math.max(0, lastBufferedEnd - currentTime); + + if (!playlist.segments.length) { + return null; + } + + // if there is plenty of content buffered, and the video has + // been played before relax for awhile + if (bufferedTime >= this.goalBufferLength_()) { + return null; + } + + // if the video has not yet played once, and we already have + // one segment downloaded do nothing + if (!hasPlayed && bufferedTime >= 1) { + return null; + } + + // When the syncPoint is null, there is no way of determining a good + // conservative segment index to fetch from + // The best thing to do here is to get the kind of sync-point data by + // making a request + if (syncPoint === null) { + mediaIndex = this.getSyncSegmentCandidate_(playlist); + return this.generateSegmentInfo_(playlist, mediaIndex, null, true); + } + + // Under normal playback conditions fetching is a simple walk forward + if (mediaIndex !== null) { + var segment = playlist.segments[mediaIndex]; + + if (segment && segment.end) { + startOfSegment = segment.end; + } else { + startOfSegment = lastBufferedEnd; + } + return this.generateSegmentInfo_(playlist, mediaIndex + 1, startOfSegment, false); + } + + // There is a sync-point but the lack of a mediaIndex indicates that + // we need to make a good conservative guess about which segment to + // fetch + if (this.fetchAtBuffer_) { + // Find the segment containing the end of the buffer + var mediaSourceInfo = Playlist.getMediaInfoForTime(playlist, lastBufferedEnd, syncPoint.segmentIndex, syncPoint.time); + + mediaIndex = mediaSourceInfo.mediaIndex; + startOfSegment = mediaSourceInfo.startTime; + } else { + // Find the segment containing currentTime + var _mediaSourceInfo = Playlist.getMediaInfoForTime(playlist, currentTime, syncPoint.segmentIndex, syncPoint.time); + + mediaIndex = _mediaSourceInfo.mediaIndex; + startOfSegment = _mediaSourceInfo.startTime; + } + + return this.generateSegmentInfo_(playlist, mediaIndex, startOfSegment, false); + } + + /** + * The segment loader has no recourse except to fetch a segment in the + * current playlist and use the internal timestamps in that segment to + * generate a syncPoint. This function returns a good candidate index + * for that process. + * + * @param {Object} playlist - the playlist object to look for a + * @returns {Number} An index of a segment from the playlist to load + */ + + }, { + key: 'getSyncSegmentCandidate_', + value: function getSyncSegmentCandidate_(playlist) { + var _this2 = this; + + if (this.currentTimeline_ === -1) { + return 0; + } + + var segmentIndexArray = playlist.segments.map(function (s, i) { + return { + timeline: s.timeline, + segmentIndex: i + }; + }).filter(function (s) { + return s.timeline === _this2.currentTimeline_; + }); + + if (segmentIndexArray.length) { + return segmentIndexArray[Math.min(segmentIndexArray.length - 1, 1)].segmentIndex; + } + + return Math.max(playlist.segments.length - 1, 0); + } + }, { + key: 'generateSegmentInfo_', + value: function generateSegmentInfo_(playlist, mediaIndex, startOfSegment, isSyncRequest) { + if (mediaIndex < 0 || mediaIndex >= playlist.segments.length) { + return null; + } + + var segment = playlist.segments[mediaIndex]; + + return { + requestId: 'segment-loader-' + Math.random(), + // resolve the segment URL relative to the playlist + uri: segment.resolvedUri, + // the segment's mediaIndex at the time it was requested + mediaIndex: mediaIndex, + // whether or not to update the SegmentLoader's state with this + // segment's mediaIndex + isSyncRequest: isSyncRequest, + startOfSegment: startOfSegment, + // the segment's playlist + playlist: playlist, + // unencrypted bytes of the segment + bytes: null, + // when a key is defined for this segment, the encrypted bytes + encryptedBytes: null, + // The target timestampOffset for this segment when we append it + // to the source buffer + timestampOffset: null, + // The timeline that the segment is in + timeline: segment.timeline, + // The expected duration of the segment in seconds + duration: segment.duration, + // retain the segment in case the playlist updates while doing an async process + segment: segment + }; + } + + /** + * Determines if the network has enough bandwidth to complete the current segment + * request in a timely manner. If not, the request will be aborted early and bandwidth + * updated to trigger a playlist switch. + * + * @param {Object} stats + * Object containing stats about the request timing and size + * @return {Boolean} True if the request was aborted, false otherwise + * @private + */ + + }, { + key: 'abortRequestEarly_', + value: function abortRequestEarly_(stats) { + if (this.hls_.tech_.paused() || + // Don't abort if the current playlist is on the lowestEnabledRendition + // TODO: Replace using timeout with a boolean indicating whether this playlist is + // the lowestEnabledRendition. + !this.xhrOptions_.timeout || + // Don't abort if we have no bandwidth information to estimate segment sizes + !this.playlist_.attributes.BANDWIDTH) { + return false; + } + + // Wait at least 1 second since the first byte of data has been received before + // using the calculated bandwidth from the progress event to allow the bitrate + // to stabilize + if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) { + return false; + } + + var currentTime = this.currentTime_(); + var measuredBandwidth = stats.bandwidth; + var segmentDuration = this.pendingSegment_.duration; + + var requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); + + // Subtract 1 from the timeUntilRebuffer so we still consider an early abort + // if we are only left with less than 1 second when the request completes. + // A negative timeUntilRebuffering indicates we are already rebuffering + var timeUntilRebuffer$$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.hls_.tech_.playbackRate()) - 1; + + // Only consider aborting early if the estimated time to finish the download + // is larger than the estimated time until the player runs out of forward buffer + if (requestTimeRemaining <= timeUntilRebuffer$$1) { + return false; + } + + var switchCandidate = minRebufferMaxBandwidthSelector({ + master: this.hls_.playlists.master, + currentTime: currentTime, + bandwidth: measuredBandwidth, + duration: this.duration_(), + segmentDuration: segmentDuration, + timeUntilRebuffer: timeUntilRebuffer$$1, + currentTimeline: this.currentTimeline_, + syncController: this.syncController_ + }); + + if (!switchCandidate) { + return; + } + + var rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$$1; + + var timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact; + + var minimumTimeSaving = 0.5; + + // If we are already rebuffering, increase the amount of variance we add to the + // potential round trip time of the new request so that we are not too aggressive + // with switching to a playlist that might save us a fraction of a second. + if (timeUntilRebuffer$$1 <= TIME_FUDGE_FACTOR) { + minimumTimeSaving = 1; + } + + if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) { + return false; + } + + // set the bandwidth to that of the desired playlist being sure to scale by + // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it + // don't trigger a bandwidthupdate as the bandwidth is artifial + this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1; + this.abort(); + this.trigger('earlyabort'); + return true; + } + + /** + * XHR `progress` event handler + * + * @param {Event} + * The XHR `progress` event + * @param {Object} simpleSegment + * A simplified segment object copy + * @private + */ + + }, { + key: 'handleProgress_', + value: function handleProgress_(event, simpleSegment) { + if (!this.pendingSegment_ || simpleSegment.requestId !== this.pendingSegment_.requestId || this.abortRequestEarly_(simpleSegment.stats)) { + return; + } + + this.trigger('progress'); + } + + /** + * load a specific segment from a request into the buffer + * + * @private + */ + + }, { + key: 'loadSegment_', + value: function loadSegment_(segmentInfo) { + this.state = 'WAITING'; + this.pendingSegment_ = segmentInfo; + this.trimBackBuffer_(segmentInfo); + + segmentInfo.abortRequests = mediaSegmentRequest(this.hls_.xhr, this.xhrOptions_, this.decrypter_, this.captionParser_, this.createSimplifiedSegmentObj_(segmentInfo), + // progress callback + this.handleProgress_.bind(this), this.segmentRequestFinished_.bind(this)); + } + + /** + * trim the back buffer so that we don't have too much data + * in the source buffer + * + * @private + * + * @param {Object} segmentInfo - the current segment + */ + + }, { + key: 'trimBackBuffer_', + value: function trimBackBuffer_(segmentInfo) { + var removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); + + // Chrome has a hard limit of 150MB of + // buffer and a very conservative "garbage collector" + // We manually clear out the old buffer to ensure + // we don't trigger the QuotaExceeded error + // on the source buffer during subsequent appends + + if (removeToTime > 0) { + this.remove(0, removeToTime); + } + } + + /** + * created a simplified copy of the segment object with just the + * information necessary to perform the XHR and decryption + * + * @private + * + * @param {Object} segmentInfo - the current segment + * @returns {Object} a simplified segment object copy + */ + + }, { + key: 'createSimplifiedSegmentObj_', + value: function createSimplifiedSegmentObj_(segmentInfo) { + var segment = segmentInfo.segment; + var simpleSegment = { + resolvedUri: segment.resolvedUri, + byterange: segment.byterange, + requestId: segmentInfo.requestId + }; + + if (segment.key) { + // if the media sequence is greater than 2^32, the IV will be incorrect + // assuming 10s segments, that would be about 1300 years + var iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]); + + simpleSegment.key = { + resolvedUri: segment.key.resolvedUri, + iv: iv + }; + } + + if (segment.map) { + simpleSegment.map = this.initSegment(segment.map); + } + + return simpleSegment; + } + + /** + * Handle the callback from the segmentRequest function and set the + * associated SegmentLoader state and errors if necessary + * + * @private + */ + + }, { + key: 'segmentRequestFinished_', + value: function segmentRequestFinished_(error, simpleSegment) { + // every request counts as a media request even if it has been aborted + // or canceled due to a timeout + this.mediaRequests += 1; + + if (simpleSegment.stats) { + this.mediaBytesTransferred += simpleSegment.stats.bytesReceived; + this.mediaTransferDuration += simpleSegment.stats.roundTripTime; + } + + // The request was aborted and the SegmentLoader has already been reset + if (!this.pendingSegment_) { + this.mediaRequestsAborted += 1; + return; + } + + // the request was aborted and the SegmentLoader has already started + // another request. this can happen when the timeout for an aborted + // request triggers due to a limitation in the XHR library + // do not count this as any sort of request or we risk double-counting + if (simpleSegment.requestId !== this.pendingSegment_.requestId) { + return; + } + + // an error occurred from the active pendingSegment_ so reset everything + if (error) { + this.pendingSegment_ = null; + this.state = 'READY'; + + // the requests were aborted just record the aborted stat and exit + // this is not a true error condition and nothing corrective needs + // to be done + if (error.code === REQUEST_ERRORS.ABORTED) { + this.mediaRequestsAborted += 1; + return; + } + + this.pause(); + + // the error is really just that at least one of the requests timed-out + // set the bandwidth to a very low value and trigger an ABR switch to + // take emergency action + if (error.code === REQUEST_ERRORS.TIMEOUT) { + this.mediaRequestsTimedout += 1; + this.bandwidth = 1; + this.roundTrip = NaN; + this.trigger('bandwidthupdate'); + return; + } + + // if control-flow has arrived here, then the error is real + // emit an error event to blacklist the current playlist + this.mediaRequestsErrored += 1; + this.error(error); + this.trigger('error'); + return; + } + + // the response was a success so set any bandwidth stats the request + // generated for ABR purposes + this.bandwidth = simpleSegment.stats.bandwidth; + this.roundTrip = simpleSegment.stats.roundTripTime; + + // if this request included an initialization segment, save that data + // to the initSegment cache + if (simpleSegment.map) { + simpleSegment.map = this.initSegment(simpleSegment.map, true); + } + + this.processSegmentResponse_(simpleSegment); + } + + /** + * Move any important data from the simplified segment object + * back to the real segment object for future phases + * + * @private + */ + + }, { + key: 'processSegmentResponse_', + value: function processSegmentResponse_(simpleSegment) { + var segmentInfo = this.pendingSegment_; + + segmentInfo.bytes = simpleSegment.bytes; + if (simpleSegment.map) { + segmentInfo.segment.map.bytes = simpleSegment.map.bytes; + } + + segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests; + + // This has fmp4 captions, add them to text tracks + if (simpleSegment.fmp4Captions) { + createCaptionsTrackIfNotExists(this.inbandTextTracks_, this.hls_.tech_, simpleSegment.captionStreams); + addCaptionData({ + inbandTextTracks: this.inbandTextTracks_, + captionArray: simpleSegment.fmp4Captions, + // fmp4s will not have a timestamp offset + timestampOffset: 0 + }); + // Reset stored captions since we added parsed + // captions to a text track at this point + this.captionParser_.clearParsedCaptions(); + } + + this.handleSegment_(); + } + + /** + * append a decrypted segement to the SourceBuffer through a SourceUpdater + * + * @private + */ + + }, { + key: 'handleSegment_', + value: function handleSegment_() { + var _this3 = this; + + if (!this.pendingSegment_) { + this.state = 'READY'; + return; + } + + var segmentInfo = this.pendingSegment_; + var segment = segmentInfo.segment; + var timingInfo = this.syncController_.probeSegmentInfo(segmentInfo); + + // When we have our first timing info, determine what media types this loader is + // dealing with. Although we're maintaining extra state, it helps to preserve the + // separation of segment loader from the actual source buffers. + if (typeof this.startingMedia_ === 'undefined' && timingInfo && ( + // Guard against cases where we're not getting timing info at all until we are + // certain that all streams will provide it. + timingInfo.containsAudio || timingInfo.containsVideo)) { + this.startingMedia_ = { + containsAudio: timingInfo.containsAudio, + containsVideo: timingInfo.containsVideo + }; + } + + var illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.startingMedia_, timingInfo); + + if (illegalMediaSwitchError) { + this.error({ + message: illegalMediaSwitchError, + blacklistDuration: Infinity + }); + this.trigger('error'); + return; + } + + if (segmentInfo.isSyncRequest) { + this.trigger('syncinfoupdate'); + this.pendingSegment_ = null; + this.state = 'READY'; + return; + } + + if (segmentInfo.timestampOffset !== null && segmentInfo.timestampOffset !== this.sourceUpdater_.timestampOffset()) { + this.sourceUpdater_.timestampOffset(segmentInfo.timestampOffset); + // fired when a timestamp offset is set in HLS (can also identify discontinuities) + this.trigger('timestampoffset'); + } + + var timelineMapping = this.syncController_.mappingForTimeline(segmentInfo.timeline); + + if (timelineMapping !== null) { + this.trigger({ + type: 'segmenttimemapping', + mapping: timelineMapping + }); + } + + this.state = 'APPENDING'; + + // if the media initialization segment is changing, append it + // before the content segment + if (segment.map) { + var initId = initSegmentId(segment.map); + + if (!this.activeInitSegmentId_ || this.activeInitSegmentId_ !== initId) { + var initSegment = this.initSegment(segment.map); + + this.sourceUpdater_.appendBuffer(initSegment.bytes, function () { + _this3.activeInitSegmentId_ = initId; + }); + } + } + + segmentInfo.byteLength = segmentInfo.bytes.byteLength; + if (typeof segment.start === 'number' && typeof segment.end === 'number') { + this.mediaSecondsLoaded += segment.end - segment.start; + } else { + this.mediaSecondsLoaded += segment.duration; + } + + this.logger_(segmentInfoString(segmentInfo)); + + this.sourceUpdater_.appendBuffer(segmentInfo.bytes, this.handleUpdateEnd_.bind(this)); + } + + /** + * callback to run when appendBuffer is finished. detects if we are + * in a good state to do things with the data we got, or if we need + * to wait for more + * + * @private + */ + + }, { + key: 'handleUpdateEnd_', + value: function handleUpdateEnd_() { + if (!this.pendingSegment_) { + this.state = 'READY'; + if (!this.paused()) { + this.monitorBuffer_(); + } + return; + } + + var segmentInfo = this.pendingSegment_; + var segment = segmentInfo.segment; + var isWalkingForward = this.mediaIndex !== null; + + this.pendingSegment_ = null; + this.recordThroughput_(segmentInfo); + this.addSegmentMetadataCue_(segmentInfo); + + this.state = 'READY'; + + this.mediaIndex = segmentInfo.mediaIndex; + this.fetchAtBuffer_ = true; + this.currentTimeline_ = segmentInfo.timeline; + + // We must update the syncinfo to recalculate the seekable range before + // the following conditional otherwise it may consider this a bad "guess" + // and attempt to resync when the post-update seekable window and live + // point would mean that this was the perfect segment to fetch + this.trigger('syncinfoupdate'); + + // If we previously appended a segment that ends more than 3 targetDurations before + // the currentTime_ that means that our conservative guess was too conservative. + // In that case, reset the loader state so that we try to use any information gained + // from the previous request to create a new, more accurate, sync-point. + if (segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3) { + this.resetEverything(); + return; + } + + // Don't do a rendition switch unless we have enough time to get a sync segment + // and conservatively guess + if (isWalkingForward) { + this.trigger('bandwidthupdate'); + } + this.trigger('progress'); + + // any time an update finishes and the last segment is in the + // buffer, end the stream. this ensures the "ended" event will + // fire if playback reaches that point. + var isEndOfStream = detectEndOfStream(segmentInfo.playlist, this.mediaSource_, segmentInfo.mediaIndex + 1); + + if (isEndOfStream) { + this.endOfStream(); + } + + if (!this.paused()) { + this.monitorBuffer_(); + } + } + + /** + * Records the current throughput of the decrypt, transmux, and append + * portion of the semgment pipeline. `throughput.rate` is a the cumulative + * moving average of the throughput. `throughput.count` is the number of + * data points in the average. + * + * @private + * @param {Object} segmentInfo the object returned by loadSegment + */ + + }, { + key: 'recordThroughput_', + value: function recordThroughput_(segmentInfo) { + var rate = this.throughput.rate; + // Add one to the time to ensure that we don't accidentally attempt to divide + // by zero in the case where the throughput is ridiculously high + var segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; + // Multiply by 8000 to convert from bytes/millisecond to bits/second + var segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); + + // This is just a cumulative moving average calculation: + // newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1) + this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count; + } + + /** + * Adds a cue to the segment-metadata track with some metadata information about the + * segment + * + * @private + * @param {Object} segmentInfo + * the object returned by loadSegment + * @method addSegmentMetadataCue_ + */ + + }, { + key: 'addSegmentMetadataCue_', + value: function addSegmentMetadataCue_(segmentInfo) { + if (!this.segmentMetadataTrack_) { + return; + } + + var segment = segmentInfo.segment; + var start = segment.start; + var end = segment.end; + + // Do not try adding the cue if the start and end times are invalid. + if (!finite(start) || !finite(end)) { + return; + } + + removeCuesFromTrack(start, end, this.segmentMetadataTrack_); + + var Cue = window_1.WebKitDataCue || window_1.VTTCue; + var value = { + bandwidth: segmentInfo.playlist.attributes.BANDWIDTH, + resolution: segmentInfo.playlist.attributes.RESOLUTION, + codecs: segmentInfo.playlist.attributes.CODECS, + byteLength: segmentInfo.byteLength, + uri: segmentInfo.uri, + timeline: segmentInfo.timeline, + playlist: segmentInfo.playlist.uri, + start: start, + end: end + }; + var data = JSON.stringify(value); + var cue = new Cue(start, end, data); + + // Attach the metadata to the value property of the cue to keep consistency between + // the differences of WebKitDataCue in safari and VTTCue in other browsers + cue.value = value; + + this.segmentMetadataTrack_.addCue(cue); + } + }]); + return SegmentLoader; + }(videojs$1.EventTarget); + + var uint8ToUtf8 = function uint8ToUtf8(uintArray) { + return decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray))); + }; + + /** + * @file vtt-segment-loader.js + */ + + var VTT_LINE_TERMINATORS = new Uint8Array('\n\n'.split('').map(function (char) { + return char.charCodeAt(0); + })); + + /** + * An object that manages segment loading and appending. + * + * @class VTTSegmentLoader + * @param {Object} options required and optional options + * @extends videojs.EventTarget + */ + + var VTTSegmentLoader = function (_SegmentLoader) { + inherits$3(VTTSegmentLoader, _SegmentLoader); + + function VTTSegmentLoader(settings) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + classCallCheck$3(this, VTTSegmentLoader); + + // SegmentLoader requires a MediaSource be specified or it will throw an error; + // however, VTTSegmentLoader has no need of a media source, so delete the reference + var _this = possibleConstructorReturn$3(this, (VTTSegmentLoader.__proto__ || Object.getPrototypeOf(VTTSegmentLoader)).call(this, settings, options)); + + _this.mediaSource_ = null; + + _this.subtitlesTrack_ = null; + return _this; + } + + /** + * Indicates which time ranges are buffered + * + * @return {TimeRange} + * TimeRange object representing the current buffered ranges + */ + + createClass$2(VTTSegmentLoader, [{ + key: 'buffered_', + value: function buffered_() { + if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues.length) { + return videojs$1.createTimeRanges(); + } + + var cues = this.subtitlesTrack_.cues; + var start = cues[0].startTime; + var end = cues[cues.length - 1].startTime; + + return videojs$1.createTimeRanges([[start, end]]); + } + + /** + * Gets and sets init segment for the provided map + * + * @param {Object} map + * The map object representing the init segment to get or set + * @param {Boolean=} set + * If true, the init segment for the provided map should be saved + * @return {Object} + * map object for desired init segment + */ + + }, { + key: 'initSegment', + value: function initSegment(map) { + var set$$1 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false; + + if (!map) { + return null; + } + + var id = initSegmentId(map); + var storedMap = this.initSegments_[id]; + + if (set$$1 && !storedMap && map.bytes) { + // append WebVTT line terminators to the media initialization segment if it exists + // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that + // requires two or more WebVTT line terminators between the WebVTT header and the + // rest of the file + var combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength; + var combinedSegment = new Uint8Array(combinedByteLength); + + combinedSegment.set(map.bytes); + combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength); + + this.initSegments_[id] = storedMap = { + resolvedUri: map.resolvedUri, + byterange: map.byterange, + bytes: combinedSegment + }; + } + + return storedMap || map; + } + + /** + * Returns true if all configuration required for loading is present, otherwise false. + * + * @return {Boolean} True if the all configuration is ready for loading + * @private + */ + + }, { + key: 'couldBeginLoading_', + value: function couldBeginLoading_() { + return this.playlist_ && this.subtitlesTrack_ && !this.paused(); + } + + /** + * Once all the starting parameters have been specified, begin + * operation. This method should only be invoked from the INIT + * state. + * + * @private + */ + + }, { + key: 'init_', + value: function init_() { + this.state = 'READY'; + this.resetEverything(); + return this.monitorBuffer_(); + } + + /** + * Set a subtitle track on the segment loader to add subtitles to + * + * @param {TextTrack=} track + * The text track to add loaded subtitles to + * @return {TextTrack} + * Returns the subtitles track + */ + + }, { + key: 'track', + value: function track(_track) { + if (typeof _track === 'undefined') { + return this.subtitlesTrack_; + } + + this.subtitlesTrack_ = _track; + + // if we were unpaused but waiting for a sourceUpdater, start + // buffering now + if (this.state === 'INIT' && this.couldBeginLoading_()) { + this.init_(); + } + + return this.subtitlesTrack_; + } + + /** + * Remove any data in the source buffer between start and end times + * @param {Number} start - the start time of the region to remove from the buffer + * @param {Number} end - the end time of the region to remove from the buffer + */ + + }, { + key: 'remove', + value: function remove(start, end) { + removeCuesFromTrack(start, end, this.subtitlesTrack_); + } + + /** + * fill the buffer with segements unless the sourceBuffers are + * currently updating + * + * Note: this function should only ever be called by monitorBuffer_ + * and never directly + * + * @private + */ + + }, { + key: 'fillBuffer_', + value: function fillBuffer_() { + var _this2 = this; + + if (!this.syncPoint_) { + this.syncPoint_ = this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_()); + } + + // see if we need to begin loading immediately + var segmentInfo = this.checkBuffer_(this.buffered_(), this.playlist_, this.mediaIndex, this.hasPlayed_(), this.currentTime_(), this.syncPoint_); + + segmentInfo = this.skipEmptySegments_(segmentInfo); + + if (!segmentInfo) { + return; + } + + if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) { + // We don't have the timestamp offset that we need to sync subtitles. + // Rerun on a timestamp offset or user interaction. + var checkTimestampOffset = function checkTimestampOffset() { + _this2.state = 'READY'; + if (!_this2.paused()) { + // if not paused, queue a buffer check as soon as possible + _this2.monitorBuffer_(); + } + }; + + this.syncController_.one('timestampoffset', checkTimestampOffset); + this.state = 'WAITING_ON_TIMELINE'; + return; + } + + this.loadSegment_(segmentInfo); + } + + /** + * Prevents the segment loader from requesting segments we know contain no subtitles + * by walking forward until we find the next segment that we don't know whether it is + * empty or not. + * + * @param {Object} segmentInfo + * a segment info object that describes the current segment + * @return {Object} + * a segment info object that describes the current segment + */ + + }, { + key: 'skipEmptySegments_', + value: function skipEmptySegments_(segmentInfo) { + while (segmentInfo && segmentInfo.segment.empty) { + segmentInfo = this.generateSegmentInfo_(segmentInfo.playlist, segmentInfo.mediaIndex + 1, segmentInfo.startOfSegment + segmentInfo.duration, segmentInfo.isSyncRequest); + } + return segmentInfo; + } + + /** + * append a decrypted segement to the SourceBuffer through a SourceUpdater + * + * @private + */ + + }, { + key: 'handleSegment_', + value: function handleSegment_() { + var _this3 = this; + + if (!this.pendingSegment_ || !this.subtitlesTrack_) { + this.state = 'READY'; + return; + } + + this.state = 'APPENDING'; + + var segmentInfo = this.pendingSegment_; + var segment = segmentInfo.segment; + + // Make sure that vttjs has loaded, otherwise, wait till it finished loading + if (typeof window_1.WebVTT !== 'function' && this.subtitlesTrack_ && this.subtitlesTrack_.tech_) { + + var loadHandler = function loadHandler() { + _this3.handleSegment_(); + }; + + this.state = 'WAITING_ON_VTTJS'; + this.subtitlesTrack_.tech_.one('vttjsloaded', loadHandler); + this.subtitlesTrack_.tech_.one('vttjserror', function () { + _this3.subtitlesTrack_.tech_.off('vttjsloaded', loadHandler); + _this3.error({ + message: 'Error loading vtt.js' + }); + _this3.state = 'READY'; + _this3.pause(); + _this3.trigger('error'); + }); + + return; + } + + segment.requested = true; + + try { + this.parseVTTCues_(segmentInfo); + } catch (e) { + this.error({ + message: e.message + }); + this.state = 'READY'; + this.pause(); + return this.trigger('error'); + } + + this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_); + + if (segmentInfo.isSyncRequest) { + this.trigger('syncinfoupdate'); + this.pendingSegment_ = null; + this.state = 'READY'; + return; + } + + segmentInfo.byteLength = segmentInfo.bytes.byteLength; + + this.mediaSecondsLoaded += segment.duration; + + if (segmentInfo.cues.length) { + // remove any overlapping cues to prevent doubling + this.remove(segmentInfo.cues[0].endTime, segmentInfo.cues[segmentInfo.cues.length - 1].endTime); + } + + segmentInfo.cues.forEach(function (cue) { + _this3.subtitlesTrack_.addCue(cue); + }); + + this.handleUpdateEnd_(); + } + + /** + * Uses the WebVTT parser to parse the segment response + * + * @param {Object} segmentInfo + * a segment info object that describes the current segment + * @private + */ + + }, { + key: 'parseVTTCues_', + value: function parseVTTCues_(segmentInfo) { + var decoder = void 0; + var decodeBytesToString = false; + + if (typeof window_1.TextDecoder === 'function') { + decoder = new window_1.TextDecoder('utf8'); + } else { + decoder = window_1.WebVTT.StringDecoder(); + decodeBytesToString = true; + } + + var parser = new window_1.WebVTT.Parser(window_1, window_1.vttjs, decoder); + + segmentInfo.cues = []; + segmentInfo.timestampmap = { MPEGTS: 0, LOCAL: 0 }; + + parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues); + parser.ontimestampmap = function (map) { + return segmentInfo.timestampmap = map; + }; + parser.onparsingerror = function (error) { + videojs$1.log.warn('Error encountered when parsing cues: ' + error.message); + }; + + if (segmentInfo.segment.map) { + var mapData = segmentInfo.segment.map.bytes; + + if (decodeBytesToString) { + mapData = uint8ToUtf8(mapData); + } + + parser.parse(mapData); + } + + var segmentData = segmentInfo.bytes; + + if (decodeBytesToString) { + segmentData = uint8ToUtf8(segmentData); + } + + parser.parse(segmentData); + parser.flush(); + } + + /** + * Updates the start and end times of any cues parsed by the WebVTT parser using + * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping + * from the SyncController + * + * @param {Object} segmentInfo + * a segment info object that describes the current segment + * @param {Object} mappingObj + * object containing a mapping from TS to media time + * @param {Object} playlist + * the playlist object containing the segment + * @private + */ + + }, { + key: 'updateTimeMapping_', + value: function updateTimeMapping_(segmentInfo, mappingObj, playlist) { + var segment = segmentInfo.segment; + + if (!mappingObj) { + // If the sync controller does not have a mapping of TS to Media Time for the + // timeline, then we don't have enough information to update the cue + // start/end times + return; + } + + if (!segmentInfo.cues.length) { + // If there are no cues, we also do not have enough information to figure out + // segment timing. Mark that the segment contains no cues so we don't re-request + // an empty segment. + segment.empty = true; + return; + } + + var timestampmap = segmentInfo.timestampmap; + var diff = timestampmap.MPEGTS / 90000 - timestampmap.LOCAL + mappingObj.mapping; + + segmentInfo.cues.forEach(function (cue) { + // First convert cue time to TS time using the timestamp-map provided within the vtt + cue.startTime += diff; + cue.endTime += diff; + }); + + if (!playlist.syncInfo) { + var firstStart = segmentInfo.cues[0].startTime; + var lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime; + + playlist.syncInfo = { + mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex, + time: Math.min(firstStart, lastStart - segment.duration) + }; + } + } + }]); + return VTTSegmentLoader; + }(SegmentLoader); + + /** + * @file ad-cue-tags.js + */ + + /** + * Searches for an ad cue that overlaps with the given mediaTime + */ + var findAdCue = function findAdCue(track, mediaTime) { + var cues = track.cues; + + for (var i = 0; i < cues.length; i++) { + var cue = cues[i]; + + if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) { + return cue; + } + } + return null; + }; + + var updateAdCues = function updateAdCues(media, track) { + var offset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0; + + if (!media.segments) { + return; + } + + var mediaTime = offset; + var cue = void 0; + + for (var i = 0; i < media.segments.length; i++) { + var segment = media.segments[i]; + + if (!cue) { + // Since the cues will span for at least the segment duration, adding a fudge + // factor of half segment duration will prevent duplicate cues from being + // created when timing info is not exact (e.g. cue start time initialized + // at 10.006677, but next call mediaTime is 10.003332 ) + cue = findAdCue(track, mediaTime + segment.duration / 2); + } + + if (cue) { + if ('cueIn' in segment) { + // Found a CUE-IN so end the cue + cue.endTime = mediaTime; + cue.adEndTime = mediaTime; + mediaTime += segment.duration; + cue = null; + continue; + } + + if (mediaTime < cue.endTime) { + // Already processed this mediaTime for this cue + mediaTime += segment.duration; + continue; + } + + // otherwise extend cue until a CUE-IN is found + cue.endTime += segment.duration; + } else { + if ('cueOut' in segment) { + cue = new window_1.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut); + cue.adStartTime = mediaTime; + // Assumes tag format to be + // #EXT-X-CUE-OUT:30 + cue.adEndTime = mediaTime + parseFloat(segment.cueOut); + track.addCue(cue); + } + + if ('cueOutCont' in segment) { + // Entered into the middle of an ad cue + var adOffset = void 0; + var adTotal = void 0; + + // Assumes tag formate to be + // #EXT-X-CUE-OUT-CONT:10/30 + + var _segment$cueOutCont$s = segment.cueOutCont.split('/').map(parseFloat); + + var _segment$cueOutCont$s2 = slicedToArray$1(_segment$cueOutCont$s, 2); + + adOffset = _segment$cueOutCont$s2[0]; + adTotal = _segment$cueOutCont$s2[1]; + + cue = new window_1.VTTCue(mediaTime, mediaTime + segment.duration, ''); + cue.adStartTime = mediaTime - adOffset; + cue.adEndTime = cue.adStartTime + adTotal; + track.addCue(cue); + } + } + mediaTime += segment.duration; + } + }; + + /** + * @file sync-controller.js + */ + + var tsprobe = tsInspector.inspect; + + var syncPointStrategies = [ + // Stategy "VOD": Handle the VOD-case where the sync-point is *always* + // the equivalence display-time 0 === segment-index 0 + { + name: 'VOD', + run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) { + if (duration$$1 !== Infinity) { + var syncPoint = { + time: 0, + segmentIndex: 0 + }; + + return syncPoint; + } + return null; + } + }, + // Stategy "ProgramDateTime": We have a program-date-time tag in this playlist + { + name: 'ProgramDateTime', + run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) { + if (!syncController.datetimeToDisplayTime) { + return null; + } + + var segments = playlist.segments || []; + var syncPoint = null; + var lastDistance = null; + + currentTime = currentTime || 0; + + for (var i = 0; i < segments.length; i++) { + var segment = segments[i]; + + if (segment.dateTimeObject) { + var segmentTime = segment.dateTimeObject.getTime() / 1000; + var segmentStart = segmentTime + syncController.datetimeToDisplayTime; + var distance = Math.abs(currentTime - segmentStart); + + // Once the distance begins to increase, we have passed + // currentTime and can stop looking for better candidates + if (lastDistance !== null && lastDistance < distance) { + break; + } + + lastDistance = distance; + syncPoint = { + time: segmentStart, + segmentIndex: i + }; + } + } + return syncPoint; + } + }, + // Stategy "Segment": We have a known time mapping for a timeline and a + // segment in the current timeline with timing data + { + name: 'Segment', + run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) { + var segments = playlist.segments || []; + var syncPoint = null; + var lastDistance = null; + + currentTime = currentTime || 0; + + for (var i = 0; i < segments.length; i++) { + var segment = segments[i]; + + if (segment.timeline === currentTimeline && typeof segment.start !== 'undefined') { + var distance = Math.abs(currentTime - segment.start); + + // Once the distance begins to increase, we have passed + // currentTime and can stop looking for better candidates + if (lastDistance !== null && lastDistance < distance) { + break; + } + + if (!syncPoint || lastDistance === null || lastDistance >= distance) { + lastDistance = distance; + syncPoint = { + time: segment.start, + segmentIndex: i + }; + } + } + } + return syncPoint; + } + }, + // Stategy "Discontinuity": We have a discontinuity with a known + // display-time + { + name: 'Discontinuity', + run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) { + var syncPoint = null; + + currentTime = currentTime || 0; + + if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) { + var lastDistance = null; + + for (var i = 0; i < playlist.discontinuityStarts.length; i++) { + var segmentIndex = playlist.discontinuityStarts[i]; + var discontinuity = playlist.discontinuitySequence + i + 1; + var discontinuitySync = syncController.discontinuities[discontinuity]; + + if (discontinuitySync) { + var distance = Math.abs(currentTime - discontinuitySync.time); + + // Once the distance begins to increase, we have passed + // currentTime and can stop looking for better candidates + if (lastDistance !== null && lastDistance < distance) { + break; + } + + if (!syncPoint || lastDistance === null || lastDistance >= distance) { + lastDistance = distance; + syncPoint = { + time: discontinuitySync.time, + segmentIndex: segmentIndex + }; + } + } + } + } + return syncPoint; + } + }, + // Stategy "Playlist": We have a playlist with a known mapping of + // segment index to display time + { + name: 'Playlist', + run: function run(syncController, playlist, duration$$1, currentTimeline, currentTime) { + if (playlist.syncInfo) { + var syncPoint = { + time: playlist.syncInfo.time, + segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence + }; + + return syncPoint; + } + return null; + } + }]; + + var SyncController = function (_videojs$EventTarget) { + inherits$3(SyncController, _videojs$EventTarget); + + function SyncController() { + classCallCheck$3(this, SyncController); + + // Segment Loader state variables... + // ...for synching across variants + var _this = possibleConstructorReturn$3(this, (SyncController.__proto__ || Object.getPrototypeOf(SyncController)).call(this)); + + _this.inspectCache_ = undefined; + + // ...for synching across variants + _this.timelines = []; + _this.discontinuities = []; + _this.datetimeToDisplayTime = null; + + _this.logger_ = logger('SyncController'); + return _this; + } + + /** + * Find a sync-point for the playlist specified + * + * A sync-point is defined as a known mapping from display-time to + * a segment-index in the current playlist. + * + * @param {Playlist} playlist + * The playlist that needs a sync-point + * @param {Number} duration + * Duration of the MediaSource (Infinite if playing a live source) + * @param {Number} currentTimeline + * The last timeline from which a segment was loaded + * @returns {Object} + * A sync-point object + */ + + createClass$2(SyncController, [{ + key: 'getSyncPoint', + value: function getSyncPoint(playlist, duration$$1, currentTimeline, currentTime) { + var syncPoints = this.runStrategies_(playlist, duration$$1, currentTimeline, currentTime); + + if (!syncPoints.length) { + // Signal that we need to attempt to get a sync-point manually + // by fetching a segment in the playlist and constructing + // a sync-point from that information + return null; + } + + // Now find the sync-point that is closest to the currentTime because + // that should result in the most accurate guess about which segment + // to fetch + return this.selectSyncPoint_(syncPoints, { key: 'time', value: currentTime }); + } + + /** + * Calculate the amount of time that has expired off the playlist during playback + * + * @param {Playlist} playlist + * Playlist object to calculate expired from + * @param {Number} duration + * Duration of the MediaSource (Infinity if playling a live source) + * @returns {Number|null} + * The amount of time that has expired off the playlist during playback. Null + * if no sync-points for the playlist can be found. + */ + + }, { + key: 'getExpiredTime', + value: function getExpiredTime(playlist, duration$$1) { + if (!playlist || !playlist.segments) { + return null; + } + + var syncPoints = this.runStrategies_(playlist, duration$$1, playlist.discontinuitySequence, 0); + + // Without sync-points, there is not enough information to determine the expired time + if (!syncPoints.length) { + return null; + } + + var syncPoint = this.selectSyncPoint_(syncPoints, { + key: 'segmentIndex', + value: 0 + }); + + // If the sync-point is beyond the start of the playlist, we want to subtract the + // duration from index 0 to syncPoint.segmentIndex instead of adding. + if (syncPoint.segmentIndex > 0) { + syncPoint.time *= -1; + } + + return Math.abs(syncPoint.time + sumDurations(playlist, syncPoint.segmentIndex, 0)); + } + + /** + * Runs each sync-point strategy and returns a list of sync-points returned by the + * strategies + * + * @private + * @param {Playlist} playlist + * The playlist that needs a sync-point + * @param {Number} duration + * Duration of the MediaSource (Infinity if playing a live source) + * @param {Number} currentTimeline + * The last timeline from which a segment was loaded + * @returns {Array} + * A list of sync-point objects + */ + + }, { + key: 'runStrategies_', + value: function runStrategies_(playlist, duration$$1, currentTimeline, currentTime) { + var syncPoints = []; + + // Try to find a sync-point in by utilizing various strategies... + for (var i = 0; i < syncPointStrategies.length; i++) { + var strategy = syncPointStrategies[i]; + var syncPoint = strategy.run(this, playlist, duration$$1, currentTimeline, currentTime); + + if (syncPoint) { + syncPoint.strategy = strategy.name; + syncPoints.push({ + strategy: strategy.name, + syncPoint: syncPoint + }); + } + } + + return syncPoints; + } + + /** + * Selects the sync-point nearest the specified target + * + * @private + * @param {Array} syncPoints + * List of sync-points to select from + * @param {Object} target + * Object specifying the property and value we are targeting + * @param {String} target.key + * Specifies the property to target. Must be either 'time' or 'segmentIndex' + * @param {Number} target.value + * The value to target for the specified key. + * @returns {Object} + * The sync-point nearest the target + */ + + }, { + key: 'selectSyncPoint_', + value: function selectSyncPoint_(syncPoints, target) { + var bestSyncPoint = syncPoints[0].syncPoint; + var bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value); + var bestStrategy = syncPoints[0].strategy; + + for (var i = 1; i < syncPoints.length; i++) { + var newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value); + + if (newDistance < bestDistance) { + bestDistance = newDistance; + bestSyncPoint = syncPoints[i].syncPoint; + bestStrategy = syncPoints[i].strategy; + } + } + + this.logger_('syncPoint for [' + target.key + ': ' + target.value + '] chosen with strategy' + (' [' + bestStrategy + ']: [time:' + bestSyncPoint.time + ',') + (' segmentIndex:' + bestSyncPoint.segmentIndex + ']')); + + return bestSyncPoint; + } + + /** + * Save any meta-data present on the segments when segments leave + * the live window to the playlist to allow for synchronization at the + * playlist level later. + * + * @param {Playlist} oldPlaylist - The previous active playlist + * @param {Playlist} newPlaylist - The updated and most current playlist + */ + + }, { + key: 'saveExpiredSegmentInfo', + value: function saveExpiredSegmentInfo(oldPlaylist, newPlaylist) { + var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; + + // When a segment expires from the playlist and it has a start time + // save that information as a possible sync-point reference in future + for (var i = mediaSequenceDiff - 1; i >= 0; i--) { + var lastRemovedSegment = oldPlaylist.segments[i]; + + if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') { + newPlaylist.syncInfo = { + mediaSequence: oldPlaylist.mediaSequence + i, + time: lastRemovedSegment.start + }; + this.logger_('playlist refresh sync: [time:' + newPlaylist.syncInfo.time + ',' + (' mediaSequence: ' + newPlaylist.syncInfo.mediaSequence + ']')); + this.trigger('syncinfoupdate'); + break; + } + } + } + + /** + * Save the mapping from playlist's ProgramDateTime to display. This should + * only ever happen once at the start of playback. + * + * @param {Playlist} playlist - The currently active playlist + */ + + }, { + key: 'setDateTimeMapping', + value: function setDateTimeMapping(playlist) { + if (!this.datetimeToDisplayTime && playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) { + var playlistTimestamp = playlist.segments[0].dateTimeObject.getTime() / 1000; + + this.datetimeToDisplayTime = -playlistTimestamp; + } + } + + /** + * Reset the state of the inspection cache when we do a rendition + * switch + */ + + }, { + key: 'reset', + value: function reset() { + this.inspectCache_ = undefined; + } + + /** + * Probe or inspect a fmp4 or an mpeg2-ts segment to determine the start + * and end of the segment in it's internal "media time". Used to generate + * mappings from that internal "media time" to the display time that is + * shown on the player. + * + * @param {SegmentInfo} segmentInfo - The current active request information + */ + + }, { + key: 'probeSegmentInfo', + value: function probeSegmentInfo(segmentInfo) { + var segment = segmentInfo.segment; + var playlist = segmentInfo.playlist; + var timingInfo = void 0; + + if (segment.map) { + timingInfo = this.probeMp4Segment_(segmentInfo); + } else { + timingInfo = this.probeTsSegment_(segmentInfo); + } + + if (timingInfo) { + if (this.calculateSegmentTimeMapping_(segmentInfo, timingInfo)) { + this.saveDiscontinuitySyncInfo_(segmentInfo); + + // If the playlist does not have sync information yet, record that information + // now with segment timing information + if (!playlist.syncInfo) { + playlist.syncInfo = { + mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex, + time: segment.start + }; + } + } + } + + return timingInfo; + } + + /** + * Probe an fmp4 or an mpeg2-ts segment to determine the start of the segment + * in it's internal "media time". + * + * @private + * @param {SegmentInfo} segmentInfo - The current active request information + * @return {object} The start and end time of the current segment in "media time" + */ + + }, { + key: 'probeMp4Segment_', + value: function probeMp4Segment_(segmentInfo) { + var segment = segmentInfo.segment; + var timescales = probe.timescale(segment.map.bytes); + var startTime = probe.startTime(timescales, segmentInfo.bytes); + + if (segmentInfo.timestampOffset !== null) { + segmentInfo.timestampOffset -= startTime; + } + + return { + start: startTime, + end: startTime + segment.duration + }; + } + + /** + * Probe an mpeg2-ts segment to determine the start and end of the segment + * in it's internal "media time". + * + * @private + * @param {SegmentInfo} segmentInfo - The current active request information + * @return {object} The start and end time of the current segment in "media time" + */ + + }, { + key: 'probeTsSegment_', + value: function probeTsSegment_(segmentInfo) { + var timeInfo = tsprobe(segmentInfo.bytes, this.inspectCache_); + var segmentStartTime = void 0; + var segmentEndTime = void 0; + + if (!timeInfo) { + return null; + } + + if (timeInfo.video && timeInfo.video.length === 2) { + this.inspectCache_ = timeInfo.video[1].dts; + segmentStartTime = timeInfo.video[0].dtsTime; + segmentEndTime = timeInfo.video[1].dtsTime; + } else if (timeInfo.audio && timeInfo.audio.length === 2) { + this.inspectCache_ = timeInfo.audio[1].dts; + segmentStartTime = timeInfo.audio[0].dtsTime; + segmentEndTime = timeInfo.audio[1].dtsTime; + } + + return { + start: segmentStartTime, + end: segmentEndTime, + containsVideo: timeInfo.video && timeInfo.video.length === 2, + containsAudio: timeInfo.audio && timeInfo.audio.length === 2 + }; + } + }, { + key: 'timestampOffsetForTimeline', + value: function timestampOffsetForTimeline(timeline) { + if (typeof this.timelines[timeline] === 'undefined') { + return null; + } + return this.timelines[timeline].time; + } + }, { + key: 'mappingForTimeline', + value: function mappingForTimeline(timeline) { + if (typeof this.timelines[timeline] === 'undefined') { + return null; + } + return this.timelines[timeline].mapping; + } + + /** + * Use the "media time" for a segment to generate a mapping to "display time" and + * save that display time to the segment. + * + * @private + * @param {SegmentInfo} segmentInfo + * The current active request information + * @param {object} timingInfo + * The start and end time of the current segment in "media time" + * @returns {Boolean} + * Returns false if segment time mapping could not be calculated + */ + + }, { + key: 'calculateSegmentTimeMapping_', + value: function calculateSegmentTimeMapping_(segmentInfo, timingInfo) { + var segment = segmentInfo.segment; + var mappingObj = this.timelines[segmentInfo.timeline]; + + if (segmentInfo.timestampOffset !== null) { + mappingObj = { + time: segmentInfo.startOfSegment, + mapping: segmentInfo.startOfSegment - timingInfo.start + }; + this.timelines[segmentInfo.timeline] = mappingObj; + this.trigger('timestampoffset'); + + this.logger_('time mapping for timeline ' + segmentInfo.timeline + ': ' + ('[time: ' + mappingObj.time + '] [mapping: ' + mappingObj.mapping + ']')); + + segment.start = segmentInfo.startOfSegment; + segment.end = timingInfo.end + mappingObj.mapping; + } else if (mappingObj) { + segment.start = timingInfo.start + mappingObj.mapping; + segment.end = timingInfo.end + mappingObj.mapping; + } else { + return false; + } + + return true; + } + + /** + * Each time we have discontinuity in the playlist, attempt to calculate the location + * in display of the start of the discontinuity and save that. We also save an accuracy + * value so that we save values with the most accuracy (closest to 0.) + * + * @private + * @param {SegmentInfo} segmentInfo - The current active request information + */ + + }, { + key: 'saveDiscontinuitySyncInfo_', + value: function saveDiscontinuitySyncInfo_(segmentInfo) { + var playlist = segmentInfo.playlist; + var segment = segmentInfo.segment; + + // If the current segment is a discontinuity then we know exactly where + // the start of the range and it's accuracy is 0 (greater accuracy values + // mean more approximation) + if (segment.discontinuity) { + this.discontinuities[segment.timeline] = { + time: segment.start, + accuracy: 0 + }; + } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) { + // Search for future discontinuities that we can provide better timing + // information for and save that information for sync purposes + for (var i = 0; i < playlist.discontinuityStarts.length; i++) { + var segmentIndex = playlist.discontinuityStarts[i]; + var discontinuity = playlist.discontinuitySequence + i + 1; + var mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex; + var accuracy = Math.abs(mediaIndexDiff); + + if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) { + var time = void 0; + + if (mediaIndexDiff < 0) { + time = segment.start - sumDurations(playlist, segmentInfo.mediaIndex, segmentIndex); + } else { + time = segment.end + sumDurations(playlist, segmentInfo.mediaIndex + 1, segmentIndex); + } + + this.discontinuities[discontinuity] = { + time: time, + accuracy: accuracy + }; + } + } + } + } + }]); + return SyncController; + }(videojs$1.EventTarget); + + var Decrypter$1 = new shimWorker("./decrypter-worker.worker.js", function (window, document$$1) { + var self = this; + var decrypterWorker = function () { + + /* + * pkcs7.pad + * https://github.com/brightcove/pkcs7 + * + * Copyright (c) 2014 Brightcove + * Licensed under the apache2 license. + */ + + /** + * Returns the subarray of a Uint8Array without PKCS#7 padding. + * @param padded {Uint8Array} unencrypted bytes that have been padded + * @return {Uint8Array} the unpadded bytes + * @see http://tools.ietf.org/html/rfc5652 + */ + + function unpad(padded) { + return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]); + } + + var classCallCheck$$1 = function classCallCheck$$1(instance, Constructor) { + if (!(instance instanceof Constructor)) { + throw new TypeError("Cannot call a class as a function"); + } + }; + + var createClass$$1 = function () { + function defineProperties(target, props) { + for (var i = 0; i < props.length; i++) { + var descriptor = props[i]; + descriptor.enumerable = descriptor.enumerable || false; + descriptor.configurable = true; + if ("value" in descriptor) descriptor.writable = true; + Object.defineProperty(target, descriptor.key, descriptor); + } + } + + return function (Constructor, protoProps, staticProps) { + if (protoProps) defineProperties(Constructor.prototype, protoProps); + if (staticProps) defineProperties(Constructor, staticProps); + return Constructor; + }; + }(); + + var inherits$$1 = function inherits$$1(subClass, superClass) { + if (typeof superClass !== "function" && superClass !== null) { + throw new TypeError("Super expression must either be null or a function, not " + (typeof superClass === 'undefined' ? 'undefined' : _typeof(superClass))); + } + + subClass.prototype = Object.create(superClass && superClass.prototype, { + constructor: { + value: subClass, + enumerable: false, + writable: true, + configurable: true + } + }); + if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; + }; + + var possibleConstructorReturn$$1 = function possibleConstructorReturn$$1(self, call) { + if (!self) { + throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); + } + + return call && ((typeof call === 'undefined' ? 'undefined' : _typeof(call)) === "object" || typeof call === "function") ? call : self; + }; + + /** + * @file aes.js + * + * This file contains an adaptation of the AES decryption algorithm + * from the Standford Javascript Cryptography Library. That work is + * covered by the following copyright and permissions notice: + * + * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation + * are those of the authors and should not be interpreted as representing + * official policies, either expressed or implied, of the authors. + */ + + /** + * Expand the S-box tables. + * + * @private + */ + var precompute = function precompute() { + var tables = [[[], [], [], [], []], [[], [], [], [], []]]; + var encTable = tables[0]; + var decTable = tables[1]; + var sbox = encTable[4]; + var sboxInv = decTable[4]; + var i = void 0; + var x = void 0; + var xInv = void 0; + var d = []; + var th = []; + var x2 = void 0; + var x4 = void 0; + var x8 = void 0; + var s = void 0; + var tEnc = void 0; + var tDec = void 0; + + // Compute double and third tables + for (i = 0; i < 256; i++) { + th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i; + } + + for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) { + // Compute sbox + s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4; + s = s >> 8 ^ s & 255 ^ 99; + sbox[x] = s; + sboxInv[s] = x; + + // Compute MixColumns + x8 = d[x4 = d[x2 = d[x]]]; + tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100; + tEnc = d[s] * 0x101 ^ s * 0x1010100; + + for (i = 0; i < 4; i++) { + encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8; + decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8; + } + } + + // Compactify. Considerable speedup on Firefox. + for (i = 0; i < 5; i++) { + encTable[i] = encTable[i].slice(0); + decTable[i] = decTable[i].slice(0); + } + return tables; + }; + var aesTables = null; + + /** + * Schedule out an AES key for both encryption and decryption. This + * is a low-level class. Use a cipher mode to do bulk encryption. + * + * @class AES + * @param key {Array} The key as an array of 4, 6 or 8 words. + */ + + var AES = function () { + function AES(key) { + classCallCheck$$1(this, AES); + + /** + * The expanded S-box and inverse S-box tables. These will be computed + * on the client so that we don't have to send them down the wire. + * + * There are two tables, _tables[0] is for encryption and + * _tables[1] is for decryption. + * + * The first 4 sub-tables are the expanded S-box with MixColumns. The + * last (_tables[01][4]) is the S-box itself. + * + * @private + */ + // if we have yet to precompute the S-box tables + // do so now + if (!aesTables) { + aesTables = precompute(); + } + // then make a copy of that object for use + this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]]; + var i = void 0; + var j = void 0; + var tmp = void 0; + var encKey = void 0; + var decKey = void 0; + var sbox = this._tables[0][4]; + var decTable = this._tables[1]; + var keyLen = key.length; + var rcon = 1; + + if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) { + throw new Error('Invalid aes key size'); + } + + encKey = key.slice(0); + decKey = []; + this._key = [encKey, decKey]; + + // schedule encryption keys + for (i = keyLen; i < 4 * keyLen + 28; i++) { + tmp = encKey[i - 1]; + + // apply sbox + if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) { + tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; + + // shift rows and add rcon + if (i % keyLen === 0) { + tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24; + rcon = rcon << 1 ^ (rcon >> 7) * 283; + } + } + + encKey[i] = encKey[i - keyLen] ^ tmp; + } + + // schedule decryption keys + for (j = 0; i; j++, i--) { + tmp = encKey[j & 3 ? i : i - 4]; + if (i <= 4 || j < 4) { + decKey[j] = tmp; + } else { + decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]]; + } + } + } + + /** + * Decrypt 16 bytes, specified as four 32-bit words. + * + * @param {Number} encrypted0 the first word to decrypt + * @param {Number} encrypted1 the second word to decrypt + * @param {Number} encrypted2 the third word to decrypt + * @param {Number} encrypted3 the fourth word to decrypt + * @param {Int32Array} out the array to write the decrypted words + * into + * @param {Number} offset the offset into the output array to start + * writing results + * @return {Array} The plaintext. + */ + + AES.prototype.decrypt = function decrypt$$1(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) { + var key = this._key[1]; + // state variables a,b,c,d are loaded with pre-whitened data + var a = encrypted0 ^ key[0]; + var b = encrypted3 ^ key[1]; + var c = encrypted2 ^ key[2]; + var d = encrypted1 ^ key[3]; + var a2 = void 0; + var b2 = void 0; + var c2 = void 0; + + // key.length === 2 ? + var nInnerRounds = key.length / 4 - 2; + var i = void 0; + var kIndex = 4; + var table = this._tables[1]; + + // load up the tables + var table0 = table[0]; + var table1 = table[1]; + var table2 = table[2]; + var table3 = table[3]; + var sbox = table[4]; + + // Inner rounds. Cribbed from OpenSSL. + for (i = 0; i < nInnerRounds; i++) { + a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex]; + b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1]; + c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2]; + d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3]; + kIndex += 4; + a = a2;b = b2;c = c2; + } + + // Last round. + for (i = 0; i < 4; i++) { + out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++]; + a2 = a;a = b;b = c;c = d;d = a2; + } + }; + + return AES; + }(); + + /** + * @file stream.js + */ + /** + * A lightweight readable stream implemention that handles event dispatching. + * + * @class Stream + */ + var Stream = function () { + function Stream() { + classCallCheck$$1(this, Stream); + + this.listeners = {}; + } + + /** + * Add a listener for a specified event type. + * + * @param {String} type the event name + * @param {Function} listener the callback to be invoked when an event of + * the specified type occurs + */ + + Stream.prototype.on = function on(type, listener) { + if (!this.listeners[type]) { + this.listeners[type] = []; + } + this.listeners[type].push(listener); + }; + + /** + * Remove a listener for a specified event type. + * + * @param {String} type the event name + * @param {Function} listener a function previously registered for this + * type of event through `on` + * @return {Boolean} if we could turn it off or not + */ + + Stream.prototype.off = function off(type, listener) { + if (!this.listeners[type]) { + return false; + } + + var index = this.listeners[type].indexOf(listener); + + this.listeners[type].splice(index, 1); + return index > -1; + }; + + /** + * Trigger an event of the specified type on this stream. Any additional + * arguments to this function are passed as parameters to event listeners. + * + * @param {String} type the event name + */ + + Stream.prototype.trigger = function trigger(type) { + var callbacks = this.listeners[type]; + + if (!callbacks) { + return; + } + + // Slicing the arguments on every invocation of this method + // can add a significant amount of overhead. Avoid the + // intermediate object creation for the common case of a + // single callback argument + if (arguments.length === 2) { + var length = callbacks.length; + + for (var i = 0; i < length; ++i) { + callbacks[i].call(this, arguments[1]); + } + } else { + var args = Array.prototype.slice.call(arguments, 1); + var _length = callbacks.length; + + for (var _i = 0; _i < _length; ++_i) { + callbacks[_i].apply(this, args); + } + } + }; + + /** + * Destroys the stream and cleans up. + */ + + Stream.prototype.dispose = function dispose() { + this.listeners = {}; + }; + /** + * Forwards all `data` events on this stream to the destination stream. The + * destination stream should provide a method `push` to receive the data + * events as they arrive. + * + * @param {Stream} destination the stream that will receive all `data` events + * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options + */ + + Stream.prototype.pipe = function pipe(destination) { + this.on('data', function (data) { + destination.push(data); + }); + }; + + return Stream; + }(); + + /** + * @file async-stream.js + */ + /** + * A wrapper around the Stream class to use setTiemout + * and run stream "jobs" Asynchronously + * + * @class AsyncStream + * @extends Stream + */ + + var AsyncStream$$1 = function (_Stream) { + inherits$$1(AsyncStream$$1, _Stream); + + function AsyncStream$$1() { + classCallCheck$$1(this, AsyncStream$$1); + + var _this = possibleConstructorReturn$$1(this, _Stream.call(this, Stream)); + + _this.jobs = []; + _this.delay = 1; + _this.timeout_ = null; + return _this; + } + + /** + * process an async job + * + * @private + */ + + AsyncStream$$1.prototype.processJob_ = function processJob_() { + this.jobs.shift()(); + if (this.jobs.length) { + this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay); + } else { + this.timeout_ = null; + } + }; + + /** + * push a job into the stream + * + * @param {Function} job the job to push into the stream + */ + + AsyncStream$$1.prototype.push = function push(job) { + this.jobs.push(job); + if (!this.timeout_) { + this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay); + } + }; + + return AsyncStream$$1; + }(Stream); + + /** + * @file decrypter.js + * + * An asynchronous implementation of AES-128 CBC decryption with + * PKCS#7 padding. + */ + + /** + * Convert network-order (big-endian) bytes into their little-endian + * representation. + */ + var ntoh = function ntoh(word) { + return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24; + }; + + /** + * Decrypt bytes using AES-128 with CBC and PKCS#7 padding. + * + * @param {Uint8Array} encrypted the encrypted bytes + * @param {Uint32Array} key the bytes of the decryption key + * @param {Uint32Array} initVector the initialization vector (IV) to + * use for the first round of CBC. + * @return {Uint8Array} the decrypted bytes + * + * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard + * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29 + * @see https://tools.ietf.org/html/rfc2315 + */ + var decrypt$$1 = function decrypt$$1(encrypted, key, initVector) { + // word-level access to the encrypted bytes + var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2); + + var decipher = new AES(Array.prototype.slice.call(key)); + + // byte and word-level access for the decrypted output + var decrypted = new Uint8Array(encrypted.byteLength); + var decrypted32 = new Int32Array(decrypted.buffer); + + // temporary variables for working with the IV, encrypted, and + // decrypted data + var init0 = void 0; + var init1 = void 0; + var init2 = void 0; + var init3 = void 0; + var encrypted0 = void 0; + var encrypted1 = void 0; + var encrypted2 = void 0; + var encrypted3 = void 0; + + // iteration variable + var wordIx = void 0; + + // pull out the words of the IV to ensure we don't modify the + // passed-in reference and easier access + init0 = initVector[0]; + init1 = initVector[1]; + init2 = initVector[2]; + init3 = initVector[3]; + + // decrypt four word sequences, applying cipher-block chaining (CBC) + // to each decrypted block + for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) { + // convert big-endian (network order) words into little-endian + // (javascript order) + encrypted0 = ntoh(encrypted32[wordIx]); + encrypted1 = ntoh(encrypted32[wordIx + 1]); + encrypted2 = ntoh(encrypted32[wordIx + 2]); + encrypted3 = ntoh(encrypted32[wordIx + 3]); + + // decrypt the block + decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); + + // XOR with the IV, and restore network byte-order to obtain the + // plaintext + decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0); + decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1); + decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2); + decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); + + // setup the IV for the next round + init0 = encrypted0; + init1 = encrypted1; + init2 = encrypted2; + init3 = encrypted3; + } + + return decrypted; + }; + + /** + * The `Decrypter` class that manages decryption of AES + * data through `AsyncStream` objects and the `decrypt` + * function + * + * @param {Uint8Array} encrypted the encrypted bytes + * @param {Uint32Array} key the bytes of the decryption key + * @param {Uint32Array} initVector the initialization vector (IV) to + * @param {Function} done the function to run when done + * @class Decrypter + */ + + var Decrypter$$1 = function () { + function Decrypter$$1(encrypted, key, initVector, done) { + classCallCheck$$1(this, Decrypter$$1); + + var step = Decrypter$$1.STEP; + var encrypted32 = new Int32Array(encrypted.buffer); + var decrypted = new Uint8Array(encrypted.byteLength); + var i = 0; + + this.asyncStream_ = new AsyncStream$$1(); + + // split up the encryption job and do the individual chunks asynchronously + this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted)); + for (i = step; i < encrypted32.length; i += step) { + initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]); + this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted)); + } + // invoke the done() callback when everything is finished + this.asyncStream_.push(function () { + // remove pkcs#7 padding from the decrypted bytes + done(null, unpad(decrypted)); + }); + } + + /** + * a getter for step the maximum number of bytes to process at one time + * + * @return {Number} the value of step 32000 + */ + + /** + * @private + */ + Decrypter$$1.prototype.decryptChunk_ = function decryptChunk_(encrypted, key, initVector, decrypted) { + return function () { + var bytes = decrypt$$1(encrypted, key, initVector); + + decrypted.set(bytes, encrypted.byteOffset); + }; + }; + + createClass$$1(Decrypter$$1, null, [{ + key: 'STEP', + get: function get$$1() { + // 4 * 8000; + return 32000; + } + }]); + return Decrypter$$1; + }(); + + /** + * @file bin-utils.js + */ + + /** + * Creates an object for sending to a web worker modifying properties that are TypedArrays + * into a new object with seperated properties for the buffer, byteOffset, and byteLength. + * + * @param {Object} message + * Object of properties and values to send to the web worker + * @return {Object} + * Modified message with TypedArray values expanded + * @function createTransferableMessage + */ + var createTransferableMessage = function createTransferableMessage(message) { + var transferable = {}; + + Object.keys(message).forEach(function (key) { + var value = message[key]; + + if (ArrayBuffer.isView(value)) { + transferable[key] = { + bytes: value.buffer, + byteOffset: value.byteOffset, + byteLength: value.byteLength + }; + } else { + transferable[key] = value; + } + }); + + return transferable; + }; + + /** + * Our web worker interface so that things can talk to aes-decrypter + * that will be running in a web worker. the scope is passed to this by + * webworkify. + * + * @param {Object} self + * the scope for the web worker + */ + var DecrypterWorker = function DecrypterWorker(self) { + self.onmessage = function (event) { + var data = event.data; + var encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength); + var key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4); + var iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4); + + /* eslint-disable no-new, handle-callback-err */ + new Decrypter$$1(encrypted, key, iv, function (err, bytes) { + self.postMessage(createTransferableMessage({ + source: data.source, + decrypted: bytes + }), [bytes.buffer]); + }); + /* eslint-enable */ + }; + }; + + var decrypterWorker = new DecrypterWorker(self); + + return decrypterWorker; + }(); + }); + + /** + * Convert the properties of an HLS track into an audioTrackKind. + * + * @private + */ + var audioTrackKind_ = function audioTrackKind_(properties) { + var kind = properties.default ? 'main' : 'alternative'; + + if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) { + kind = 'main-desc'; + } + + return kind; + }; + + /** + * Pause provided segment loader and playlist loader if active + * + * @param {SegmentLoader} segmentLoader + * SegmentLoader to pause + * @param {Object} mediaType + * Active media type + * @function stopLoaders + */ + var stopLoaders = function stopLoaders(segmentLoader, mediaType) { + segmentLoader.abort(); + segmentLoader.pause(); + + if (mediaType && mediaType.activePlaylistLoader) { + mediaType.activePlaylistLoader.pause(); + mediaType.activePlaylistLoader = null; + } + }; + + /** + * Start loading provided segment loader and playlist loader + * + * @param {PlaylistLoader} playlistLoader + * PlaylistLoader to start loading + * @param {Object} mediaType + * Active media type + * @function startLoaders + */ + var startLoaders = function startLoaders(playlistLoader, mediaType) { + // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the + // playlist loader + mediaType.activePlaylistLoader = playlistLoader; + playlistLoader.load(); + }; + + /** + * Returns a function to be called when the media group changes. It performs a + * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a + * change of group is merely a rendition switch of the same content at another encoding, + * rather than a change of content, such as switching audio from English to Spanish. + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @return {Function} + * Handler for a non-destructive resync of SegmentLoader when the active media + * group changes. + * @function onGroupChanged + */ + var onGroupChanged = function onGroupChanged(type, settings) { + return function () { + var _settings$segmentLoad = settings.segmentLoaders, + segmentLoader = _settings$segmentLoad[type], + mainSegmentLoader = _settings$segmentLoad.main, + mediaType = settings.mediaTypes[type]; + + var activeTrack = mediaType.activeTrack(); + var activeGroup = mediaType.activeGroup(activeTrack); + var previousActiveLoader = mediaType.activePlaylistLoader; + + stopLoaders(segmentLoader, mediaType); + + if (!activeGroup) { + // there is no group active + return; + } + + if (!activeGroup.playlistLoader) { + if (previousActiveLoader) { + // The previous group had a playlist loader but the new active group does not + // this means we are switching from demuxed to muxed audio. In this case we want to + // do a destructive reset of the main segment loader and not restart the audio + // loaders. + mainSegmentLoader.resetEverything(); + } + return; + } + + // Non-destructive resync + segmentLoader.resyncLoader(); + + startLoaders(activeGroup.playlistLoader, mediaType); + }; + }; + + /** + * Returns a function to be called when the media track changes. It performs a + * destructive reset of the SegmentLoader to ensure we start loading as close to + * currentTime as possible. + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @return {Function} + * Handler for a destructive reset of SegmentLoader when the active media + * track changes. + * @function onTrackChanged + */ + var onTrackChanged = function onTrackChanged(type, settings) { + return function () { + var _settings$segmentLoad2 = settings.segmentLoaders, + segmentLoader = _settings$segmentLoad2[type], + mainSegmentLoader = _settings$segmentLoad2.main, + mediaType = settings.mediaTypes[type]; + + var activeTrack = mediaType.activeTrack(); + var activeGroup = mediaType.activeGroup(activeTrack); + var previousActiveLoader = mediaType.activePlaylistLoader; + + stopLoaders(segmentLoader, mediaType); + + if (!activeGroup) { + // there is no group active so we do not want to restart loaders + return; + } + + if (!activeGroup.playlistLoader) { + // when switching from demuxed audio/video to muxed audio/video (noted by no playlist + // loader for the audio group), we want to do a destructive reset of the main segment + // loader and not restart the audio loaders + mainSegmentLoader.resetEverything(); + return; + } + + if (previousActiveLoader === activeGroup.playlistLoader) { + // Nothing has actually changed. This can happen because track change events can fire + // multiple times for a "single" change. One for enabling the new active track, and + // one for disabling the track that was active + startLoaders(activeGroup.playlistLoader, mediaType); + return; + } + + if (segmentLoader.track) { + // For WebVTT, set the new text track in the segmentloader + segmentLoader.track(activeTrack); + } + + // destructive reset + segmentLoader.resetEverything(); + + startLoaders(activeGroup.playlistLoader, mediaType); + }; + }; + + var onError = { + /** + * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters + * an error. + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @return {Function} + * Error handler. Logs warning (or error if the playlist is blacklisted) to + * console and switches back to default audio track. + * @function onError.AUDIO + */ + AUDIO: function AUDIO(type, settings) { + return function () { + var segmentLoader = settings.segmentLoaders[type], + mediaType = settings.mediaTypes[type], + blacklistCurrentPlaylist = settings.blacklistCurrentPlaylist; + + stopLoaders(segmentLoader, mediaType); + + // switch back to default audio track + var activeTrack = mediaType.activeTrack(); + var activeGroup = mediaType.activeGroup(); + var id = (activeGroup.filter(function (group) { + return group.default; + })[0] || activeGroup[0]).id; + var defaultTrack = mediaType.tracks[id]; + + if (activeTrack === defaultTrack) { + // Default track encountered an error. All we can do now is blacklist the current + // rendition and hope another will switch audio groups + blacklistCurrentPlaylist({ + message: 'Problem encountered loading the default audio track.' + }); + return; + } + + videojs$1.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.'); + + for (var trackId in mediaType.tracks) { + mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack; + } + + mediaType.onTrackChanged(); + }; + }, + /** + * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters + * an error. + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @return {Function} + * Error handler. Logs warning to console and disables the active subtitle track + * @function onError.SUBTITLES + */ + SUBTITLES: function SUBTITLES(type, settings) { + return function () { + var segmentLoader = settings.segmentLoaders[type], + mediaType = settings.mediaTypes[type]; + + videojs$1.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.'); + + stopLoaders(segmentLoader, mediaType); + + var track = mediaType.activeTrack(); + + if (track) { + track.mode = 'disabled'; + } + + mediaType.onTrackChanged(); + }; + } + }; + + var setupListeners = { + /** + * Setup event listeners for audio playlist loader + * + * @param {String} type + * MediaGroup type + * @param {PlaylistLoader|null} playlistLoader + * PlaylistLoader to register listeners on + * @param {Object} settings + * Object containing required information for media groups + * @function setupListeners.AUDIO + */ + AUDIO: function AUDIO(type, playlistLoader, settings) { + if (!playlistLoader) { + // no playlist loader means audio will be muxed with the video + return; + } + + var tech = settings.tech, + requestOptions = settings.requestOptions, + segmentLoader = settings.segmentLoaders[type]; + + playlistLoader.on('loadedmetadata', function () { + var media = playlistLoader.media(); + + segmentLoader.playlist(media, requestOptions); + + // if the video is already playing, or if this isn't a live video and preload + // permits, start downloading segments + if (!tech.paused() || media.endList && tech.preload() !== 'none') { + segmentLoader.load(); + } + }); + + playlistLoader.on('loadedplaylist', function () { + segmentLoader.playlist(playlistLoader.media(), requestOptions); + + // If the player isn't paused, ensure that the segment loader is running + if (!tech.paused()) { + segmentLoader.load(); + } + }); + + playlistLoader.on('error', onError[type](type, settings)); + }, + /** + * Setup event listeners for subtitle playlist loader + * + * @param {String} type + * MediaGroup type + * @param {PlaylistLoader|null} playlistLoader + * PlaylistLoader to register listeners on + * @param {Object} settings + * Object containing required information for media groups + * @function setupListeners.SUBTITLES + */ + SUBTITLES: function SUBTITLES(type, playlistLoader, settings) { + var tech = settings.tech, + requestOptions = settings.requestOptions, + segmentLoader = settings.segmentLoaders[type], + mediaType = settings.mediaTypes[type]; + + playlistLoader.on('loadedmetadata', function () { + var media = playlistLoader.media(); + + segmentLoader.playlist(media, requestOptions); + segmentLoader.track(mediaType.activeTrack()); + + // if the video is already playing, or if this isn't a live video and preload + // permits, start downloading segments + if (!tech.paused() || media.endList && tech.preload() !== 'none') { + segmentLoader.load(); + } + }); + + playlistLoader.on('loadedplaylist', function () { + segmentLoader.playlist(playlistLoader.media(), requestOptions); + + // If the player isn't paused, ensure that the segment loader is running + if (!tech.paused()) { + segmentLoader.load(); + } + }); + + playlistLoader.on('error', onError[type](type, settings)); + } + }; + + var byGroupId = function byGroupId(type, groupId) { + return function (playlist) { + return playlist.attributes[type] === groupId; + }; + }; + + var byResolvedUri = function byResolvedUri(resolvedUri) { + return function (playlist) { + return playlist.resolvedUri === resolvedUri; + }; + }; + + var initialize = { + /** + * Setup PlaylistLoaders and AudioTracks for the audio groups + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @function initialize.AUDIO + */ + 'AUDIO': function AUDIO(type, settings) { + var hls = settings.hls, + sourceType = settings.sourceType, + segmentLoader = settings.segmentLoaders[type], + withCredentials = settings.requestOptions.withCredentials, + _settings$master = settings.master, + mediaGroups = _settings$master.mediaGroups, + playlists = _settings$master.playlists, + _settings$mediaTypes$ = settings.mediaTypes[type], + groups = _settings$mediaTypes$.groups, + tracks = _settings$mediaTypes$.tracks, + masterPlaylistLoader = settings.masterPlaylistLoader; + + // force a default if we have none + + if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) { + mediaGroups[type] = { main: { default: { default: true } } }; + } + + for (var groupId in mediaGroups[type]) { + if (!groups[groupId]) { + groups[groupId] = []; + } + + // List of playlists that have an AUDIO attribute value matching the current + // group ID + var groupPlaylists = playlists.filter(byGroupId(type, groupId)); + + for (var variantLabel in mediaGroups[type][groupId]) { + var properties = mediaGroups[type][groupId][variantLabel]; + + // List of playlists for the current group ID that have a matching uri with + // this alternate audio variant + var matchingPlaylists = groupPlaylists.filter(byResolvedUri(properties.resolvedUri)); + + if (matchingPlaylists.length) { + // If there is a playlist that has the same uri as this audio variant, assume + // that the playlist is audio only. We delete the resolvedUri property here + // to prevent a playlist loader from being created so that we don't have + // both the main and audio segment loaders loading the same audio segments + // from the same playlist. + delete properties.resolvedUri; + } + + var playlistLoader = void 0; + + if (properties.resolvedUri) { + playlistLoader = new PlaylistLoader(properties.resolvedUri, hls, withCredentials); + } else if (properties.playlists && sourceType === 'dash') { + playlistLoader = new DashPlaylistLoader(properties.playlists[0], hls, withCredentials, masterPlaylistLoader); + } else { + // no resolvedUri means the audio is muxed with the video when using this + // audio track + playlistLoader = null; + } + + properties = videojs$1.mergeOptions({ id: variantLabel, playlistLoader: playlistLoader }, properties); + + setupListeners[type](type, properties.playlistLoader, settings); + + groups[groupId].push(properties); + + if (typeof tracks[variantLabel] === 'undefined') { + var track = new videojs$1.AudioTrack({ + id: variantLabel, + kind: audioTrackKind_(properties), + enabled: false, + language: properties.language, + default: properties.default, + label: variantLabel + }); + + tracks[variantLabel] = track; + } + } + } + + // setup single error event handler for the segment loader + segmentLoader.on('error', onError[type](type, settings)); + }, + /** + * Setup PlaylistLoaders and TextTracks for the subtitle groups + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @function initialize.SUBTITLES + */ + 'SUBTITLES': function SUBTITLES(type, settings) { + var tech = settings.tech, + hls = settings.hls, + sourceType = settings.sourceType, + segmentLoader = settings.segmentLoaders[type], + withCredentials = settings.requestOptions.withCredentials, + mediaGroups = settings.master.mediaGroups, + _settings$mediaTypes$2 = settings.mediaTypes[type], + groups = _settings$mediaTypes$2.groups, + tracks = _settings$mediaTypes$2.tracks, + masterPlaylistLoader = settings.masterPlaylistLoader; + + for (var groupId in mediaGroups[type]) { + if (!groups[groupId]) { + groups[groupId] = []; + } + + for (var variantLabel in mediaGroups[type][groupId]) { + if (mediaGroups[type][groupId][variantLabel].forced) { + // Subtitle playlists with the forced attribute are not selectable in Safari. + // According to Apple's HLS Authoring Specification: + // If content has forced subtitles and regular subtitles in a given language, + // the regular subtitles track in that language MUST contain both the forced + // subtitles and the regular subtitles for that language. + // Because of this requirement and that Safari does not add forced subtitles, + // forced subtitles are skipped here to maintain consistent experience across + // all platforms + continue; + } + + var properties = mediaGroups[type][groupId][variantLabel]; + + var playlistLoader = void 0; + + if (sourceType === 'hls') { + playlistLoader = new PlaylistLoader(properties.resolvedUri, hls, withCredentials); + } else if (sourceType === 'dash') { + playlistLoader = new DashPlaylistLoader(properties.playlists[0], hls, withCredentials, masterPlaylistLoader); + } + + properties = videojs$1.mergeOptions({ + id: variantLabel, + playlistLoader: playlistLoader + }, properties); + + setupListeners[type](type, properties.playlistLoader, settings); + + groups[groupId].push(properties); + + if (typeof tracks[variantLabel] === 'undefined') { + var track = tech.addRemoteTextTrack({ + id: variantLabel, + kind: 'subtitles', + enabled: false, + language: properties.language, + label: variantLabel + }, false).track; + + tracks[variantLabel] = track; + } + } + } + + // setup single error event handler for the segment loader + segmentLoader.on('error', onError[type](type, settings)); + }, + /** + * Setup TextTracks for the closed-caption groups + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @function initialize['CLOSED-CAPTIONS'] + */ + 'CLOSED-CAPTIONS': function CLOSEDCAPTIONS(type, settings) { + var tech = settings.tech, + mediaGroups = settings.master.mediaGroups, + _settings$mediaTypes$3 = settings.mediaTypes[type], + groups = _settings$mediaTypes$3.groups, + tracks = _settings$mediaTypes$3.tracks; + + for (var groupId in mediaGroups[type]) { + if (!groups[groupId]) { + groups[groupId] = []; + } + + for (var variantLabel in mediaGroups[type][groupId]) { + var properties = mediaGroups[type][groupId][variantLabel]; + + // We only support CEA608 captions for now, so ignore anything that + // doesn't use a CCx INSTREAM-ID + if (!properties.instreamId.match(/CC\d/)) { + continue; + } + + // No PlaylistLoader is required for Closed-Captions because the captions are + // embedded within the video stream + groups[groupId].push(videojs$1.mergeOptions({ id: variantLabel }, properties)); + + if (typeof tracks[variantLabel] === 'undefined') { + var track = tech.addRemoteTextTrack({ + id: properties.instreamId, + kind: 'captions', + enabled: false, + language: properties.language, + label: variantLabel + }, false).track; + + tracks[variantLabel] = track; + } + } + } + } + }; + + /** + * Returns a function used to get the active group of the provided type + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @return {Function} + * Function that returns the active media group for the provided type. Takes an + * optional parameter {TextTrack} track. If no track is provided, a list of all + * variants in the group, otherwise the variant corresponding to the provided + * track is returned. + * @function activeGroup + */ + var activeGroup = function activeGroup(type, settings) { + return function (track) { + var masterPlaylistLoader = settings.masterPlaylistLoader, + groups = settings.mediaTypes[type].groups; + + var media = masterPlaylistLoader.media(); + + if (!media) { + return null; + } + + var variants = null; + + if (media.attributes[type]) { + variants = groups[media.attributes[type]]; + } + + variants = variants || groups.main; + + if (typeof track === 'undefined') { + return variants; + } + + if (track === null) { + // An active track was specified so a corresponding group is expected. track === null + // means no track is currently active so there is no corresponding group + return null; + } + + return variants.filter(function (props) { + return props.id === track.id; + })[0] || null; + }; + }; + + var activeTrack = { + /** + * Returns a function used to get the active track of type provided + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @return {Function} + * Function that returns the active media track for the provided type. Returns + * null if no track is active + * @function activeTrack.AUDIO + */ + AUDIO: function AUDIO(type, settings) { + return function () { + var tracks = settings.mediaTypes[type].tracks; + + for (var id in tracks) { + if (tracks[id].enabled) { + return tracks[id]; + } + } + + return null; + }; + }, + /** + * Returns a function used to get the active track of type provided + * + * @param {String} type + * MediaGroup type + * @param {Object} settings + * Object containing required information for media groups + * @return {Function} + * Function that returns the active media track for the provided type. Returns + * null if no track is active + * @function activeTrack.SUBTITLES + */ + SUBTITLES: function SUBTITLES(type, settings) { + return function () { + var tracks = settings.mediaTypes[type].tracks; + + for (var id in tracks) { + if (tracks[id].mode === 'showing') { + return tracks[id]; + } + } + + return null; + }; + } + }; + + /** + * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles, + * Closed-Captions) specified in the master manifest. + * + * @param {Object} settings + * Object containing required information for setting up the media groups + * @param {SegmentLoader} settings.segmentLoaders.AUDIO + * Audio segment loader + * @param {SegmentLoader} settings.segmentLoaders.SUBTITLES + * Subtitle segment loader + * @param {SegmentLoader} settings.segmentLoaders.main + * Main segment loader + * @param {Tech} settings.tech + * The tech of the player + * @param {Object} settings.requestOptions + * XHR request options used by the segment loaders + * @param {PlaylistLoader} settings.masterPlaylistLoader + * PlaylistLoader for the master source + * @param {HlsHandler} settings.hls + * HLS SourceHandler + * @param {Object} settings.master + * The parsed master manifest + * @param {Object} settings.mediaTypes + * Object to store the loaders, tracks, and utility methods for each media type + * @param {Function} settings.blacklistCurrentPlaylist + * Blacklists the current rendition and forces a rendition switch. + * @function setupMediaGroups + */ + var setupMediaGroups = function setupMediaGroups(settings) { + ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(function (type) { + initialize[type](type, settings); + }); + + var mediaTypes = settings.mediaTypes, + masterPlaylistLoader = settings.masterPlaylistLoader, + tech = settings.tech, + hls = settings.hls; + + // setup active group and track getters and change event handlers + + ['AUDIO', 'SUBTITLES'].forEach(function (type) { + mediaTypes[type].activeGroup = activeGroup(type, settings); + mediaTypes[type].activeTrack = activeTrack[type](type, settings); + mediaTypes[type].onGroupChanged = onGroupChanged(type, settings); + mediaTypes[type].onTrackChanged = onTrackChanged(type, settings); + }); + + // DO NOT enable the default subtitle or caption track. + // DO enable the default audio track + var audioGroup = mediaTypes.AUDIO.activeGroup(); + var groupId = (audioGroup.filter(function (group) { + return group.default; + })[0] || audioGroup[0]).id; + + mediaTypes.AUDIO.tracks[groupId].enabled = true; + mediaTypes.AUDIO.onTrackChanged(); + + masterPlaylistLoader.on('mediachange', function () { + ['AUDIO', 'SUBTITLES'].forEach(function (type) { + return mediaTypes[type].onGroupChanged(); + }); + }); + + // custom audio track change event handler for usage event + var onAudioTrackChanged = function onAudioTrackChanged() { + mediaTypes.AUDIO.onTrackChanged(); + tech.trigger({ type: 'usage', name: 'hls-audio-change' }); + }; + + tech.audioTracks().addEventListener('change', onAudioTrackChanged); + tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged); + + hls.on('dispose', function () { + tech.audioTracks().removeEventListener('change', onAudioTrackChanged); + tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged); + }); + + // clear existing audio tracks and add the ones we just created + tech.clearTracks('audio'); + + for (var id in mediaTypes.AUDIO.tracks) { + tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]); + } + }; + + /** + * Creates skeleton object used to store the loaders, tracks, and utility methods for each + * media type + * + * @return {Object} + * Object to store the loaders, tracks, and utility methods for each media type + * @function createMediaTypes + */ + var createMediaTypes = function createMediaTypes() { + var mediaTypes = {}; + + ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(function (type) { + mediaTypes[type] = { + groups: {}, + tracks: {}, + activePlaylistLoader: null, + activeGroup: noop$1, + activeTrack: noop$1, + onGroupChanged: noop$1, + onTrackChanged: noop$1 + }; + }); + + return mediaTypes; + }; + + /** + * @file master-playlist-controller.js + */ + + var ABORT_EARLY_BLACKLIST_SECONDS = 60 * 2; + + var Hls = void 0; + + // SegmentLoader stats that need to have each loader's + // values summed to calculate the final value + var loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred']; + var sumLoaderStat = function sumLoaderStat(stat) { + return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat]; + }; + + /** + * the master playlist controller controller all interactons + * between playlists and segmentloaders. At this time this mainly + * involves a master playlist and a series of audio playlists + * if they are available + * + * @class MasterPlaylistController + * @extends videojs.EventTarget + */ + var MasterPlaylistController = function (_videojs$EventTarget) { + inherits$3(MasterPlaylistController, _videojs$EventTarget); + + function MasterPlaylistController(options) { + classCallCheck$3(this, MasterPlaylistController); + + var _this = possibleConstructorReturn$3(this, (MasterPlaylistController.__proto__ || Object.getPrototypeOf(MasterPlaylistController)).call(this)); + + var url = options.url, + withCredentials = options.withCredentials, + tech = options.tech, + bandwidth = options.bandwidth, + externHls = options.externHls, + useCueTags = options.useCueTags, + blacklistDuration = options.blacklistDuration, + enableLowInitialPlaylist = options.enableLowInitialPlaylist, + sourceType = options.sourceType, + seekTo = options.seekTo; + + if (!url) { + throw new Error('A non-empty playlist URL is required'); + } + + Hls = externHls; + + _this.withCredentials = withCredentials; + _this.tech_ = tech; + _this.hls_ = tech.hls; + _this.seekTo_ = seekTo; + _this.sourceType_ = sourceType; + _this.useCueTags_ = useCueTags; + _this.blacklistDuration = blacklistDuration; + _this.enableLowInitialPlaylist = enableLowInitialPlaylist; + if (_this.useCueTags_) { + _this.cueTagsTrack_ = _this.tech_.addTextTrack('metadata', 'ad-cues'); + _this.cueTagsTrack_.inBandMetadataTrackDispatchType = ''; + } + + _this.requestOptions_ = { + withCredentials: _this.withCredentials, + timeout: null + }; + + _this.mediaTypes_ = createMediaTypes(); + + _this.mediaSource = new videojs$1.MediaSource(); + + // load the media source into the player + _this.mediaSource.addEventListener('sourceopen', _this.handleSourceOpen_.bind(_this)); + + _this.seekable_ = videojs$1.createTimeRanges(); + _this.hasPlayed_ = function () { + return false; + }; + + _this.syncController_ = new SyncController(options); + _this.segmentMetadataTrack_ = tech.addRemoteTextTrack({ + kind: 'metadata', + label: 'segment-metadata' + }, false).track; + + _this.decrypter_ = new Decrypter$1(); + _this.inbandTextTracks_ = {}; + + var segmentLoaderSettings = { + hls: _this.hls_, + mediaSource: _this.mediaSource, + currentTime: _this.tech_.currentTime.bind(_this.tech_), + seekable: function seekable$$1() { + return _this.seekable(); + }, + seeking: function seeking() { + return _this.tech_.seeking(); + }, + duration: function duration$$1() { + return _this.mediaSource.duration; + }, + hasPlayed: function hasPlayed() { + return _this.hasPlayed_(); + }, + goalBufferLength: function goalBufferLength() { + return _this.goalBufferLength(); + }, + bandwidth: bandwidth, + syncController: _this.syncController_, + decrypter: _this.decrypter_, + sourceType: _this.sourceType_, + inbandTextTracks: _this.inbandTextTracks_ + }; + + _this.masterPlaylistLoader_ = _this.sourceType_ === 'dash' ? new DashPlaylistLoader(url, _this.hls_, _this.withCredentials) : new PlaylistLoader(url, _this.hls_, _this.withCredentials); + _this.setupMasterPlaylistLoaderListeners_(); + + // setup segment loaders + // combined audio/video or just video when alternate audio track is selected + _this.mainSegmentLoader_ = new SegmentLoader(videojs$1.mergeOptions(segmentLoaderSettings, { + segmentMetadataTrack: _this.segmentMetadataTrack_, + loaderType: 'main' + }), options); + + // alternate audio track + _this.audioSegmentLoader_ = new SegmentLoader(videojs$1.mergeOptions(segmentLoaderSettings, { + loaderType: 'audio' + }), options); + + _this.subtitleSegmentLoader_ = new VTTSegmentLoader(videojs$1.mergeOptions(segmentLoaderSettings, { + loaderType: 'vtt' + }), options); + + _this.setupSegmentLoaderListeners_(); + + // Create SegmentLoader stat-getters + loaderStats.forEach(function (stat) { + _this[stat + '_'] = sumLoaderStat.bind(_this, stat); + }); + + _this.logger_ = logger('MPC'); + + _this.masterPlaylistLoader_.load(); + return _this; + } + + /** + * Register event handlers on the master playlist loader. A helper + * function for construction time. + * + * @private + */ + + createClass$2(MasterPlaylistController, [{ + key: 'setupMasterPlaylistLoaderListeners_', + value: function setupMasterPlaylistLoaderListeners_() { + var _this2 = this; + + this.masterPlaylistLoader_.on('loadedmetadata', function () { + var media = _this2.masterPlaylistLoader_.media(); + var requestTimeout = _this2.masterPlaylistLoader_.targetDuration * 1.5 * 1000; + + // If we don't have any more available playlists, we don't want to + // timeout the request. + if (isLowestEnabledRendition(_this2.masterPlaylistLoader_.master, _this2.masterPlaylistLoader_.media())) { + _this2.requestOptions_.timeout = 0; + } else { + _this2.requestOptions_.timeout = requestTimeout; + } + + // if this isn't a live video and preload permits, start + // downloading segments + if (media.endList && _this2.tech_.preload() !== 'none') { + _this2.mainSegmentLoader_.playlist(media, _this2.requestOptions_); + _this2.mainSegmentLoader_.load(); + } + + setupMediaGroups({ + sourceType: _this2.sourceType_, + segmentLoaders: { + AUDIO: _this2.audioSegmentLoader_, + SUBTITLES: _this2.subtitleSegmentLoader_, + main: _this2.mainSegmentLoader_ + }, + tech: _this2.tech_, + requestOptions: _this2.requestOptions_, + masterPlaylistLoader: _this2.masterPlaylistLoader_, + hls: _this2.hls_, + master: _this2.master(), + mediaTypes: _this2.mediaTypes_, + blacklistCurrentPlaylist: _this2.blacklistCurrentPlaylist.bind(_this2) + }); + + _this2.triggerPresenceUsage_(_this2.master(), media); + + try { + _this2.setupSourceBuffers_(); + } catch (e) { + videojs$1.log.warn('Failed to create SourceBuffers', e); + return _this2.mediaSource.endOfStream('decode'); + } + _this2.setupFirstPlay(); + + _this2.trigger('selectedinitialmedia'); + }); + + this.masterPlaylistLoader_.on('loadedplaylist', function () { + var updatedPlaylist = _this2.masterPlaylistLoader_.media(); + + if (!updatedPlaylist) { + // blacklist any variants that are not supported by the browser before selecting + // an initial media as the playlist selectors do not consider browser support + _this2.excludeUnsupportedVariants_(); + + var selectedMedia = void 0; + + if (_this2.enableLowInitialPlaylist) { + selectedMedia = _this2.selectInitialPlaylist(); + } + + if (!selectedMedia) { + selectedMedia = _this2.selectPlaylist(); + } + + _this2.initialMedia_ = selectedMedia; + _this2.masterPlaylistLoader_.media(_this2.initialMedia_); + return; + } + + if (_this2.useCueTags_) { + _this2.updateAdCues_(updatedPlaylist); + } + + // TODO: Create a new event on the PlaylistLoader that signals + // that the segments have changed in some way and use that to + // update the SegmentLoader instead of doing it twice here and + // on `mediachange` + _this2.mainSegmentLoader_.playlist(updatedPlaylist, _this2.requestOptions_); + _this2.updateDuration(); + + // If the player isn't paused, ensure that the segment loader is running, + // as it is possible that it was temporarily stopped while waiting for + // a playlist (e.g., in case the playlist errored and we re-requested it). + if (!_this2.tech_.paused()) { + _this2.mainSegmentLoader_.load(); + if (_this2.audioSegmentLoader_) { + _this2.audioSegmentLoader_.load(); + } + } + + if (!updatedPlaylist.endList) { + var addSeekableRange = function addSeekableRange() { + var seekable$$1 = _this2.seekable(); + + if (seekable$$1.length !== 0) { + _this2.mediaSource.addSeekableRange_(seekable$$1.start(0), seekable$$1.end(0)); + } + }; + + if (_this2.duration() !== Infinity) { + var onDurationchange = function onDurationchange() { + if (_this2.duration() === Infinity) { + addSeekableRange(); + } else { + _this2.tech_.one('durationchange', onDurationchange); + } + }; + + _this2.tech_.one('durationchange', onDurationchange); + } else { + addSeekableRange(); + } + } + }); + + this.masterPlaylistLoader_.on('error', function () { + _this2.blacklistCurrentPlaylist(_this2.masterPlaylistLoader_.error); + }); + + this.masterPlaylistLoader_.on('mediachanging', function () { + _this2.mainSegmentLoader_.abort(); + _this2.mainSegmentLoader_.pause(); + }); + + this.masterPlaylistLoader_.on('mediachange', function () { + var media = _this2.masterPlaylistLoader_.media(); + var requestTimeout = _this2.masterPlaylistLoader_.targetDuration * 1.5 * 1000; + + // If we don't have any more available playlists, we don't want to + // timeout the request. + if (isLowestEnabledRendition(_this2.masterPlaylistLoader_.master, _this2.masterPlaylistLoader_.media())) { + _this2.requestOptions_.timeout = 0; + } else { + _this2.requestOptions_.timeout = requestTimeout; + } + + // TODO: Create a new event on the PlaylistLoader that signals + // that the segments have changed in some way and use that to + // update the SegmentLoader instead of doing it twice here and + // on `loadedplaylist` + _this2.mainSegmentLoader_.playlist(media, _this2.requestOptions_); + + _this2.mainSegmentLoader_.load(); + + _this2.tech_.trigger({ + type: 'mediachange', + bubbles: true + }); + }); + + this.masterPlaylistLoader_.on('playlistunchanged', function () { + var updatedPlaylist = _this2.masterPlaylistLoader_.media(); + var playlistOutdated = _this2.stuckAtPlaylistEnd_(updatedPlaylist); + + if (playlistOutdated) { + // Playlist has stopped updating and we're stuck at its end. Try to + // blacklist it and switch to another playlist in the hope that that + // one is updating (and give the player a chance to re-adjust to the + // safe live point). + _this2.blacklistCurrentPlaylist({ + message: 'Playlist no longer updating.' + }); + // useful for monitoring QoS + _this2.tech_.trigger('playliststuck'); + } + }); + + this.masterPlaylistLoader_.on('renditiondisabled', function () { + _this2.tech_.trigger({ type: 'usage', name: 'hls-rendition-disabled' }); + }); + this.masterPlaylistLoader_.on('renditionenabled', function () { + _this2.tech_.trigger({ type: 'usage', name: 'hls-rendition-enabled' }); + }); + } + + /** + * A helper function for triggerring presence usage events once per source + * + * @private + */ + + }, { + key: 'triggerPresenceUsage_', + value: function triggerPresenceUsage_(master, media) { + var mediaGroups = master.mediaGroups || {}; + var defaultDemuxed = true; + var audioGroupKeys = Object.keys(mediaGroups.AUDIO); + + for (var mediaGroup in mediaGroups.AUDIO) { + for (var label in mediaGroups.AUDIO[mediaGroup]) { + var properties = mediaGroups.AUDIO[mediaGroup][label]; + + if (!properties.uri) { + defaultDemuxed = false; + } + } + } + + if (defaultDemuxed) { + this.tech_.trigger({ type: 'usage', name: 'hls-demuxed' }); + } + + if (Object.keys(mediaGroups.SUBTITLES).length) { + this.tech_.trigger({ type: 'usage', name: 'hls-webvtt' }); + } + + if (Hls.Playlist.isAes(media)) { + this.tech_.trigger({ type: 'usage', name: 'hls-aes' }); + } + + if (Hls.Playlist.isFmp4(media)) { + this.tech_.trigger({ type: 'usage', name: 'hls-fmp4' }); + } + + if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) { + this.tech_.trigger({ type: 'usage', name: 'hls-alternate-audio' }); + } + + if (this.useCueTags_) { + this.tech_.trigger({ type: 'usage', name: 'hls-playlist-cue-tags' }); + } + } + /** + * Register event handlers on the segment loaders. A helper function + * for construction time. + * + * @private + */ + + }, { + key: 'setupSegmentLoaderListeners_', + value: function setupSegmentLoaderListeners_() { + var _this3 = this; + + this.mainSegmentLoader_.on('bandwidthupdate', function () { + var nextPlaylist = _this3.selectPlaylist(); + var currentPlaylist = _this3.masterPlaylistLoader_.media(); + var buffered = _this3.tech_.buffered(); + var forwardBuffer = buffered.length ? buffered.end(buffered.length - 1) - _this3.tech_.currentTime() : 0; + + var bufferLowWaterLine = _this3.bufferLowWaterLine(); + + // If the playlist is live, then we want to not take low water line into account. + // This is because in LIVE, the player plays 3 segments from the end of the + // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble + // in those segments, a viewer will never experience a rendition upswitch. + if (!currentPlaylist.endList || + // For the same reason as LIVE, we ignore the low water line when the VOD + // duration is below the max potential low water line + _this3.duration() < Config.MAX_BUFFER_LOW_WATER_LINE || + // we want to switch down to lower resolutions quickly to continue playback, but + nextPlaylist.attributes.BANDWIDTH < currentPlaylist.attributes.BANDWIDTH || + // ensure we have some buffer before we switch up to prevent us running out of + // buffer while loading a higher rendition. + forwardBuffer >= bufferLowWaterLine) { + _this3.masterPlaylistLoader_.media(nextPlaylist); + } + + _this3.tech_.trigger('bandwidthupdate'); + }); + this.mainSegmentLoader_.on('progress', function () { + _this3.trigger('progress'); + }); + + this.mainSegmentLoader_.on('error', function () { + _this3.blacklistCurrentPlaylist(_this3.mainSegmentLoader_.error()); + }); + + this.mainSegmentLoader_.on('syncinfoupdate', function () { + _this3.onSyncInfoUpdate_(); + }); + + this.mainSegmentLoader_.on('timestampoffset', function () { + _this3.tech_.trigger({ type: 'usage', name: 'hls-timestamp-offset' }); + }); + this.audioSegmentLoader_.on('syncinfoupdate', function () { + _this3.onSyncInfoUpdate_(); + }); + + this.mainSegmentLoader_.on('ended', function () { + _this3.onEndOfStream(); + }); + + this.mainSegmentLoader_.on('earlyabort', function () { + _this3.blacklistCurrentPlaylist({ + message: 'Aborted early because there isn\'t enough bandwidth to complete the ' + 'request without rebuffering.' + }, ABORT_EARLY_BLACKLIST_SECONDS); + }); + + this.mainSegmentLoader_.on('reseteverything', function () { + // If playing an MTS stream, a videojs.MediaSource is listening for + // hls-reset to reset caption parsing state in the transmuxer + _this3.tech_.trigger('hls-reset'); + }); + + this.mainSegmentLoader_.on('segmenttimemapping', function (event) { + // If playing an MTS stream in html, a videojs.MediaSource is listening for + // hls-segment-time-mapping update its internal mapping of stream to display time + _this3.tech_.trigger({ + type: 'hls-segment-time-mapping', + mapping: event.mapping + }); + }); + + this.audioSegmentLoader_.on('ended', function () { + _this3.onEndOfStream(); + }); + } + }, { + key: 'mediaSecondsLoaded_', + value: function mediaSecondsLoaded_() { + return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded); + } + + /** + * Call load on our SegmentLoaders + */ + + }, { + key: 'load', + value: function load() { + this.mainSegmentLoader_.load(); + if (this.mediaTypes_.AUDIO.activePlaylistLoader) { + this.audioSegmentLoader_.load(); + } + if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) { + this.subtitleSegmentLoader_.load(); + } + } + + /** + * Re-tune playback quality level for the current player + * conditions without performing destructive actions, like + * removing already buffered content + * + * @private + */ + + }, { + key: 'smoothQualityChange_', + value: function smoothQualityChange_() { + var media = this.selectPlaylist(); + + if (media !== this.masterPlaylistLoader_.media()) { + this.masterPlaylistLoader_.media(media); + + this.mainSegmentLoader_.resetLoader(); + // don't need to reset audio as it is reset when media changes + } + } + + /** + * Re-tune playback quality level for the current player + * conditions. This method will perform destructive actions like removing + * already buffered content in order to readjust the currently active + * playlist quickly. This is good for manual quality changes + * + * @private + */ + + }, { + key: 'fastQualityChange_', + value: function fastQualityChange_() { + var _this4 = this; + + var media = this.selectPlaylist(); + + if (media === this.masterPlaylistLoader_.media()) { + return; + } + + this.masterPlaylistLoader_.media(media); + + // Delete all buffered data to allow an immediate quality switch, then seek to give + // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds + // ahead is roughly the minimum that will accomplish this across a variety of content + // in IE and Edge, but seeking in place is sufficient on all other browsers) + // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/ + // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904 + this.mainSegmentLoader_.resetEverything(function () { + // Since this is not a typical seek, we avoid the seekTo method which can cause segments + // from the previously enabled rendition to load before the new playlist has finished loading + if (videojs$1.browser.IE_VERSION || videojs$1.browser.IS_EDGE) { + _this4.tech_.setCurrentTime(_this4.tech_.currentTime() + 0.04); + } else { + _this4.tech_.setCurrentTime(_this4.tech_.currentTime()); + } + }); + + // don't need to reset audio as it is reset when media changes + } + + /** + * Begin playback. + */ + + }, { + key: 'play', + value: function play() { + if (this.setupFirstPlay()) { + return; + } + + if (this.tech_.ended()) { + this.seekTo_(0); + } + + if (this.hasPlayed_()) { + this.load(); + } + + var seekable$$1 = this.tech_.seekable(); + + // if the viewer has paused and we fell out of the live window, + // seek forward to the live point + if (this.tech_.duration() === Infinity) { + if (this.tech_.currentTime() < seekable$$1.start(0)) { + return this.seekTo_(seekable$$1.end(seekable$$1.length - 1)); + } + } + } + + /** + * Seek to the latest media position if this is a live video and the + * player and video are loaded and initialized. + */ + + }, { + key: 'setupFirstPlay', + value: function setupFirstPlay() { + var _this5 = this; + + var media = this.masterPlaylistLoader_.media(); + + // Check that everything is ready to begin buffering for the first call to play + // If 1) there is no active media + // 2) the player is paused + // 3) the first play has already been setup + // then exit early + if (!media || this.tech_.paused() || this.hasPlayed_()) { + return false; + } + + // when the video is a live stream + if (!media.endList) { + var seekable$$1 = this.seekable(); + + if (!seekable$$1.length) { + // without a seekable range, the player cannot seek to begin buffering at the live + // point + return false; + } + + if (videojs$1.browser.IE_VERSION && this.tech_.readyState() === 0) { + // IE11 throws an InvalidStateError if you try to set currentTime while the + // readyState is 0, so it must be delayed until the tech fires loadedmetadata. + this.tech_.one('loadedmetadata', function () { + _this5.trigger('firstplay'); + _this5.seekTo_(seekable$$1.end(0)); + _this5.hasPlayed_ = function () { + return true; + }; + }); + + return false; + } + + // trigger firstplay to inform the source handler to ignore the next seek event + this.trigger('firstplay'); + // seek to the live point + this.seekTo_(seekable$$1.end(0)); + } + + this.hasPlayed_ = function () { + return true; + }; + // we can begin loading now that everything is ready + this.load(); + return true; + } + + /** + * handle the sourceopen event on the MediaSource + * + * @private + */ + + }, { + key: 'handleSourceOpen_', + value: function handleSourceOpen_() { + // Only attempt to create the source buffer if none already exist. + // handleSourceOpen is also called when we are "re-opening" a source buffer + // after `endOfStream` has been called (in response to a seek for instance) + try { + this.setupSourceBuffers_(); + } catch (e) { + videojs$1.log.warn('Failed to create Source Buffers', e); + return this.mediaSource.endOfStream('decode'); + } + + // if autoplay is enabled, begin playback. This is duplicative of + // code in video.js but is required because play() must be invoked + // *after* the media source has opened. + if (this.tech_.autoplay()) { + var playPromise = this.tech_.play(); + + // Catch/silence error when a pause interrupts a play request + // on browsers which return a promise + if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') { + playPromise.then(null, function (e) {}); + } + } + + this.trigger('sourceopen'); + } + + /** + * Calls endOfStream on the media source when all active stream types have called + * endOfStream + * + * @param {string} streamType + * Stream type of the segment loader that called endOfStream + * @private + */ + + }, { + key: 'onEndOfStream', + value: function onEndOfStream() { + var isEndOfStream = this.mainSegmentLoader_.ended_; + + if (this.mediaTypes_.AUDIO.activePlaylistLoader) { + // if the audio playlist loader exists, then alternate audio is active + if (!this.mainSegmentLoader_.startingMedia_ || this.mainSegmentLoader_.startingMedia_.containsVideo) { + // if we do not know if the main segment loader contains video yet or if we + // definitively know the main segment loader contains video, then we need to wait + // for both main and audio segment loaders to call endOfStream + isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_; + } else { + // otherwise just rely on the audio loader + isEndOfStream = this.audioSegmentLoader_.ended_; + } + } + + if (isEndOfStream) { + this.mediaSource.endOfStream(); + } + } + + /** + * Check if a playlist has stopped being updated + * @param {Object} playlist the media playlist object + * @return {boolean} whether the playlist has stopped being updated or not + */ + + }, { + key: 'stuckAtPlaylistEnd_', + value: function stuckAtPlaylistEnd_(playlist) { + var seekable$$1 = this.seekable(); + + if (!seekable$$1.length) { + // playlist doesn't have enough information to determine whether we are stuck + return false; + } + + var expired = this.syncController_.getExpiredTime(playlist, this.mediaSource.duration); + + if (expired === null) { + return false; + } + + // does not use the safe live end to calculate playlist end, since we + // don't want to say we are stuck while there is still content + var absolutePlaylistEnd = Hls.Playlist.playlistEnd(playlist, expired); + var currentTime = this.tech_.currentTime(); + var buffered = this.tech_.buffered(); + + if (!buffered.length) { + // return true if the playhead reached the absolute end of the playlist + return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA; + } + var bufferedEnd = buffered.end(buffered.length - 1); + + // return true if there is too little buffer left and buffer has reached absolute + // end of playlist + return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA; + } + + /** + * Blacklists a playlist when an error occurs for a set amount of time + * making it unavailable for selection by the rendition selection algorithm + * and then forces a new playlist (rendition) selection. + * + * @param {Object=} error an optional error that may include the playlist + * to blacklist + * @param {Number=} blacklistDuration an optional number of seconds to blacklist the + * playlist + */ + + }, { + key: 'blacklistCurrentPlaylist', + value: function blacklistCurrentPlaylist() { + var error = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + var blacklistDuration = arguments[1]; + + var currentPlaylist = void 0; + var nextPlaylist = void 0; + + // If the `error` was generated by the playlist loader, it will contain + // the playlist we were trying to load (but failed) and that should be + // blacklisted instead of the currently selected playlist which is likely + // out-of-date in this scenario + currentPlaylist = error.playlist || this.masterPlaylistLoader_.media(); + + blacklistDuration = blacklistDuration || error.blacklistDuration || this.blacklistDuration; + + // If there is no current playlist, then an error occurred while we were + // trying to load the master OR while we were disposing of the tech + if (!currentPlaylist) { + this.error = error; + + try { + return this.mediaSource.endOfStream('network'); + } catch (e) { + return this.trigger('error'); + } + } + + var isFinalRendition = this.masterPlaylistLoader_.master.playlists.filter(isEnabled).length === 1; + + if (isFinalRendition) { + // Never blacklisting this playlist because it's final rendition + videojs$1.log.warn('Problem encountered with the current ' + 'HLS playlist. Trying again since it is the final playlist.'); + + this.tech_.trigger('retryplaylist'); + return this.masterPlaylistLoader_.load(isFinalRendition); + } + // Blacklist this playlist + currentPlaylist.excludeUntil = Date.now() + blacklistDuration * 1000; + this.tech_.trigger('blacklistplaylist'); + this.tech_.trigger({ type: 'usage', name: 'hls-rendition-blacklisted' }); + + // Select a new playlist + nextPlaylist = this.selectPlaylist(); + videojs$1.log.warn('Problem encountered with the current HLS playlist.' + (error.message ? ' ' + error.message : '') + ' Switching to another playlist.'); + + return this.masterPlaylistLoader_.media(nextPlaylist); + } + + /** + * Pause all segment loaders + */ + + }, { + key: 'pauseLoading', + value: function pauseLoading() { + this.mainSegmentLoader_.pause(); + if (this.mediaTypes_.AUDIO.activePlaylistLoader) { + this.audioSegmentLoader_.pause(); + } + if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) { + this.subtitleSegmentLoader_.pause(); + } + } + + /** + * set the current time on all segment loaders + * + * @param {TimeRange} currentTime the current time to set + * @return {TimeRange} the current time + */ + + }, { + key: 'setCurrentTime', + value: function setCurrentTime(currentTime) { + var buffered = findRange(this.tech_.buffered(), currentTime); + + if (!(this.masterPlaylistLoader_ && this.masterPlaylistLoader_.media())) { + // return immediately if the metadata is not ready yet + return 0; + } + + // it's clearly an edge-case but don't thrown an error if asked to + // seek within an empty playlist + if (!this.masterPlaylistLoader_.media().segments) { + return 0; + } + + // In flash playback, the segment loaders should be reset on every seek, even + // in buffer seeks. If the seek location is already buffered, continue buffering as + // usual + // TODO: redo this comment + if (buffered && buffered.length) { + return currentTime; + } + + // cancel outstanding requests so we begin buffering at the new + // location + this.mainSegmentLoader_.resetEverything(); + this.mainSegmentLoader_.abort(); + if (this.mediaTypes_.AUDIO.activePlaylistLoader) { + this.audioSegmentLoader_.resetEverything(); + this.audioSegmentLoader_.abort(); + } + if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) { + this.subtitleSegmentLoader_.resetEverything(); + this.subtitleSegmentLoader_.abort(); + } + + // start segment loader loading in case they are paused + this.load(); + } + + /** + * get the current duration + * + * @return {TimeRange} the duration + */ + + }, { + key: 'duration', + value: function duration$$1() { + if (!this.masterPlaylistLoader_) { + return 0; + } + + if (this.mediaSource) { + return this.mediaSource.duration; + } + + return Hls.Playlist.duration(this.masterPlaylistLoader_.media()); + } + + /** + * check the seekable range + * + * @return {TimeRange} the seekable range + */ + + }, { + key: 'seekable', + value: function seekable$$1() { + return this.seekable_; + } + }, { + key: 'onSyncInfoUpdate_', + value: function onSyncInfoUpdate_() { + var mainSeekable = void 0; + var audioSeekable = void 0; + + if (!this.masterPlaylistLoader_) { + return; + } + + var media = this.masterPlaylistLoader_.media(); + + if (!media) { + return; + } + + var expired = this.syncController_.getExpiredTime(media, this.mediaSource.duration); + + if (expired === null) { + // not enough information to update seekable + return; + } + + mainSeekable = Hls.Playlist.seekable(media, expired); + + if (mainSeekable.length === 0) { + return; + } + + if (this.mediaTypes_.AUDIO.activePlaylistLoader) { + media = this.mediaTypes_.AUDIO.activePlaylistLoader.media(); + expired = this.syncController_.getExpiredTime(media, this.mediaSource.duration); + + if (expired === null) { + return; + } + + audioSeekable = Hls.Playlist.seekable(media, expired); + + if (audioSeekable.length === 0) { + return; + } + } + + if (!audioSeekable) { + // seekable has been calculated based on buffering video data so it + // can be returned directly + this.seekable_ = mainSeekable; + } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) { + // seekables are pretty far off, rely on main + this.seekable_ = mainSeekable; + } else { + this.seekable_ = videojs$1.createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]); + } + + this.logger_('seekable updated [' + printableRange(this.seekable_) + ']'); + + this.tech_.trigger('seekablechanged'); + } + + /** + * Update the player duration + */ + + }, { + key: 'updateDuration', + value: function updateDuration() { + var _this6 = this; + + var oldDuration = this.mediaSource.duration; + var newDuration = Hls.Playlist.duration(this.masterPlaylistLoader_.media()); + var buffered = this.tech_.buffered(); + var setDuration = function setDuration() { + _this6.mediaSource.duration = newDuration; + _this6.tech_.trigger('durationchange'); + + _this6.mediaSource.removeEventListener('sourceopen', setDuration); + }; + + if (buffered.length > 0) { + newDuration = Math.max(newDuration, buffered.end(buffered.length - 1)); + } + + // if the duration has changed, invalidate the cached value + if (oldDuration !== newDuration) { + // update the duration + if (this.mediaSource.readyState !== 'open') { + this.mediaSource.addEventListener('sourceopen', setDuration); + } else { + setDuration(); + } + } + } + + /** + * dispose of the MasterPlaylistController and everything + * that it controls + */ + + }, { + key: 'dispose', + value: function dispose() { + var _this7 = this; + + this.decrypter_.terminate(); + this.masterPlaylistLoader_.dispose(); + this.mainSegmentLoader_.dispose(); + + ['AUDIO', 'SUBTITLES'].forEach(function (type) { + var groups = _this7.mediaTypes_[type].groups; + + for (var id in groups) { + groups[id].forEach(function (group) { + if (group.playlistLoader) { + group.playlistLoader.dispose(); + } + }); + } + }); + + this.audioSegmentLoader_.dispose(); + this.subtitleSegmentLoader_.dispose(); + } + + /** + * return the master playlist object if we have one + * + * @return {Object} the master playlist object that we parsed + */ + + }, { + key: 'master', + value: function master() { + return this.masterPlaylistLoader_.master; + } + + /** + * return the currently selected playlist + * + * @return {Object} the currently selected playlist object that we parsed + */ + + }, { + key: 'media', + value: function media() { + // playlist loader will not return media if it has not been fully loaded + return this.masterPlaylistLoader_.media() || this.initialMedia_; + } + + /** + * setup our internal source buffers on our segment Loaders + * + * @private + */ + + }, { + key: 'setupSourceBuffers_', + value: function setupSourceBuffers_() { + var media = this.masterPlaylistLoader_.media(); + var mimeTypes = void 0; + + // wait until a media playlist is available and the Media Source is + // attached + if (!media || this.mediaSource.readyState !== 'open') { + return; + } + + mimeTypes = mimeTypesForPlaylist(this.masterPlaylistLoader_.master, media); + if (mimeTypes.length < 1) { + this.error = 'No compatible SourceBuffer configuration for the variant stream:' + media.resolvedUri; + return this.mediaSource.endOfStream('decode'); + } + + this.configureLoaderMimeTypes_(mimeTypes); + // exclude any incompatible variant streams from future playlist + // selection + this.excludeIncompatibleVariants_(media); + } + }, { + key: 'configureLoaderMimeTypes_', + value: function configureLoaderMimeTypes_(mimeTypes) { + // If the content is demuxed, we can't start appending segments to a source buffer + // until both source buffers are set up, or else the browser may not let us add the + // second source buffer (it will assume we are playing either audio only or video + // only). + var sourceBufferEmitter = + // If there is more than one mime type + mimeTypes.length > 1 && + // and the first mime type does not have muxed video and audio + mimeTypes[0].indexOf(',') === -1 && + // and the two mime types are different (they can be the same in the case of audio + // only with alternate audio) + mimeTypes[0] !== mimeTypes[1] ? + // then we want to wait on the second source buffer + new videojs$1.EventTarget() : + // otherwise there is no need to wait as the content is either audio only, + // video only, or muxed content. + null; + + this.mainSegmentLoader_.mimeType(mimeTypes[0], sourceBufferEmitter); + if (mimeTypes[1]) { + this.audioSegmentLoader_.mimeType(mimeTypes[1], sourceBufferEmitter); + } + } + + /** + * Blacklists playlists with codecs that are unsupported by the browser. + */ + + }, { + key: 'excludeUnsupportedVariants_', + value: function excludeUnsupportedVariants_() { + this.master().playlists.forEach(function (variant) { + if (variant.attributes.CODECS && window_1.MediaSource && window_1.MediaSource.isTypeSupported && !window_1.MediaSource.isTypeSupported('video/mp4; codecs="' + mapLegacyAvcCodecs(variant.attributes.CODECS) + '"')) { + variant.excludeUntil = Infinity; + } + }); + } + + /** + * Blacklist playlists that are known to be codec or + * stream-incompatible with the SourceBuffer configuration. For + * instance, Media Source Extensions would cause the video element to + * stall waiting for video data if you switched from a variant with + * video and audio to an audio-only one. + * + * @param {Object} media a media playlist compatible with the current + * set of SourceBuffers. Variants in the current master playlist that + * do not appear to have compatible codec or stream configurations + * will be excluded from the default playlist selection algorithm + * indefinitely. + * @private + */ + + }, { + key: 'excludeIncompatibleVariants_', + value: function excludeIncompatibleVariants_(media) { + var codecCount = 2; + var videoCodec = null; + var codecs = void 0; + + if (media.attributes.CODECS) { + codecs = parseCodecs(media.attributes.CODECS); + videoCodec = codecs.videoCodec; + codecCount = codecs.codecCount; + } + + this.master().playlists.forEach(function (variant) { + var variantCodecs = { + codecCount: 2, + videoCodec: null + }; + + if (variant.attributes.CODECS) { + variantCodecs = parseCodecs(variant.attributes.CODECS); + } + + // if the streams differ in the presence or absence of audio or + // video, they are incompatible + if (variantCodecs.codecCount !== codecCount) { + variant.excludeUntil = Infinity; + } + + // if h.264 is specified on the current playlist, some flavor of + // it must be specified on all compatible variants + if (variantCodecs.videoCodec !== videoCodec) { + variant.excludeUntil = Infinity; + } + }); + } + }, { + key: 'updateAdCues_', + value: function updateAdCues_(media) { + var offset = 0; + var seekable$$1 = this.seekable(); + + if (seekable$$1.length) { + offset = seekable$$1.start(0); + } + + updateAdCues(media, this.cueTagsTrack_, offset); + } + + /** + * Calculates the desired forward buffer length based on current time + * + * @return {Number} Desired forward buffer length in seconds + */ + + }, { + key: 'goalBufferLength', + value: function goalBufferLength() { + var currentTime = this.tech_.currentTime(); + var initial = Config.GOAL_BUFFER_LENGTH; + var rate = Config.GOAL_BUFFER_LENGTH_RATE; + var max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH); + + return Math.min(initial + currentTime * rate, max); + } + + /** + * Calculates the desired buffer low water line based on current time + * + * @return {Number} Desired buffer low water line in seconds + */ + + }, { + key: 'bufferLowWaterLine', + value: function bufferLowWaterLine() { + var currentTime = this.tech_.currentTime(); + var initial = Config.BUFFER_LOW_WATER_LINE; + var rate = Config.BUFFER_LOW_WATER_LINE_RATE; + var max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE); + + return Math.min(initial + currentTime * rate, max); + } + }]); + return MasterPlaylistController; + }(videojs$1.EventTarget); + + /** + * Returns a function that acts as the Enable/disable playlist function. + * + * @param {PlaylistLoader} loader - The master playlist loader + * @param {String} playlistUri - uri of the playlist + * @param {Function} changePlaylistFn - A function to be called after a + * playlist's enabled-state has been changed. Will NOT be called if a + * playlist's enabled-state is unchanged + * @param {Boolean=} enable - Value to set the playlist enabled-state to + * or if undefined returns the current enabled-state for the playlist + * @return {Function} Function for setting/getting enabled + */ + var enableFunction = function enableFunction(loader, playlistUri, changePlaylistFn) { + return function (enable) { + var playlist = loader.master.playlists[playlistUri]; + var incompatible = isIncompatible(playlist); + var currentlyEnabled = isEnabled(playlist); + + if (typeof enable === 'undefined') { + return currentlyEnabled; + } + + if (enable) { + delete playlist.disabled; + } else { + playlist.disabled = true; + } + + if (enable !== currentlyEnabled && !incompatible) { + // Ensure the outside world knows about our changes + changePlaylistFn(); + if (enable) { + loader.trigger('renditionenabled'); + } else { + loader.trigger('renditiondisabled'); + } + } + return enable; + }; + }; + + /** + * The representation object encapsulates the publicly visible information + * in a media playlist along with a setter/getter-type function (enabled) + * for changing the enabled-state of a particular playlist entry + * + * @class Representation + */ + + var Representation = function Representation(hlsHandler, playlist, id) { + classCallCheck$3(this, Representation); + + // Get a reference to a bound version of fastQualityChange_ + var fastChangeFunction = hlsHandler.masterPlaylistController_.fastQualityChange_.bind(hlsHandler.masterPlaylistController_); + + // some playlist attributes are optional + if (playlist.attributes.RESOLUTION) { + var resolution = playlist.attributes.RESOLUTION; + + this.width = resolution.width; + this.height = resolution.height; + } + + this.bandwidth = playlist.attributes.BANDWIDTH; + + // The id is simply the ordinality of the media playlist + // within the master playlist + this.id = id; + + // Partially-apply the enableFunction to create a playlist- + // specific variant + this.enabled = enableFunction(hlsHandler.playlists, playlist.uri, fastChangeFunction); + }; + + /** + * A mixin function that adds the `representations` api to an instance + * of the HlsHandler class + * @param {HlsHandler} hlsHandler - An instance of HlsHandler to add the + * representation API into + */ + + var renditionSelectionMixin = function renditionSelectionMixin(hlsHandler) { + var playlists = hlsHandler.playlists; + + // Add a single API-specific function to the HlsHandler instance + hlsHandler.representations = function () { + return playlists.master.playlists.filter(function (media) { + return !isIncompatible(media); + }).map(function (e, i) { + return new Representation(hlsHandler, e, e.uri); + }); + }; + }; + + /** + * @file playback-watcher.js + * + * Playback starts, and now my watch begins. It shall not end until my death. I shall + * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns + * and win no glory. I shall live and die at my post. I am the corrector of the underflow. + * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge + * my life and honor to the Playback Watch, for this Player and all the Players to come. + */ + + // Set of events that reset the playback-watcher time check logic and clear the timeout + var timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error']; + + /** + * @class PlaybackWatcher + */ + + var PlaybackWatcher = function () { + /** + * Represents an PlaybackWatcher object. + * @constructor + * @param {object} options an object that includes the tech and settings + */ + function PlaybackWatcher(options) { + var _this = this; + + classCallCheck$3(this, PlaybackWatcher); + + this.tech_ = options.tech; + this.seekable = options.seekable; + this.seekTo = options.seekTo; + + this.consecutiveUpdates = 0; + this.lastRecordedTime = null; + this.timer_ = null; + this.checkCurrentTimeTimeout_ = null; + this.logger_ = logger('PlaybackWatcher'); + + this.logger_('initialize'); + + var canPlayHandler = function canPlayHandler() { + return _this.monitorCurrentTime_(); + }; + var waitingHandler = function waitingHandler() { + return _this.techWaiting_(); + }; + var cancelTimerHandler = function cancelTimerHandler() { + return _this.cancelTimer_(); + }; + var fixesBadSeeksHandler = function fixesBadSeeksHandler() { + return _this.fixesBadSeeks_(); + }; + + this.tech_.on('seekablechanged', fixesBadSeeksHandler); + this.tech_.on('waiting', waitingHandler); + this.tech_.on(timerCancelEvents, cancelTimerHandler); + this.tech_.on('canplay', canPlayHandler); + + // Define the dispose function to clean up our events + this.dispose = function () { + _this.logger_('dispose'); + _this.tech_.off('seekablechanged', fixesBadSeeksHandler); + _this.tech_.off('waiting', waitingHandler); + _this.tech_.off(timerCancelEvents, cancelTimerHandler); + _this.tech_.off('canplay', canPlayHandler); + if (_this.checkCurrentTimeTimeout_) { + window_1.clearTimeout(_this.checkCurrentTimeTimeout_); + } + _this.cancelTimer_(); + }; + } + + /** + * Periodically check current time to see if playback stopped + * + * @private + */ + + createClass$2(PlaybackWatcher, [{ + key: 'monitorCurrentTime_', + value: function monitorCurrentTime_() { + this.checkCurrentTime_(); + + if (this.checkCurrentTimeTimeout_) { + window_1.clearTimeout(this.checkCurrentTimeTimeout_); + } + + // 42 = 24 fps // 250 is what Webkit uses // FF uses 15 + this.checkCurrentTimeTimeout_ = window_1.setTimeout(this.monitorCurrentTime_.bind(this), 250); + } + + /** + * The purpose of this function is to emulate the "waiting" event on + * browsers that do not emit it when they are waiting for more + * data to continue playback + * + * @private + */ + + }, { + key: 'checkCurrentTime_', + value: function checkCurrentTime_() { + if (this.tech_.seeking() && this.fixesBadSeeks_()) { + this.consecutiveUpdates = 0; + this.lastRecordedTime = this.tech_.currentTime(); + return; + } + + if (this.tech_.paused() || this.tech_.seeking()) { + return; + } + + var currentTime = this.tech_.currentTime(); + var buffered = this.tech_.buffered(); + + if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) { + // If current time is at the end of the final buffered region, then any playback + // stall is most likely caused by buffering in a low bandwidth environment. The tech + // should fire a `waiting` event in this scenario, but due to browser and tech + // inconsistencies. Calling `techWaiting_` here allows us to simulate + // responding to a native `waiting` event when the tech fails to emit one. + return this.techWaiting_(); + } + + if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) { + this.consecutiveUpdates++; + this.waiting_(); + } else if (currentTime === this.lastRecordedTime) { + this.consecutiveUpdates++; + } else { + this.consecutiveUpdates = 0; + this.lastRecordedTime = currentTime; + } + } + + /** + * Cancels any pending timers and resets the 'timeupdate' mechanism + * designed to detect that we are stalled + * + * @private + */ + + }, { + key: 'cancelTimer_', + value: function cancelTimer_() { + this.consecutiveUpdates = 0; + + if (this.timer_) { + this.logger_('cancelTimer_'); + clearTimeout(this.timer_); + } + + this.timer_ = null; + } + + /** + * Fixes situations where there's a bad seek + * + * @return {Boolean} whether an action was taken to fix the seek + * @private + */ + + }, { + key: 'fixesBadSeeks_', + value: function fixesBadSeeks_() { + var seeking = this.tech_.seeking(); + var seekable = this.seekable(); + var currentTime = this.tech_.currentTime(); + var seekTo = void 0; + + if (seeking && this.afterSeekableWindow_(seekable, currentTime)) { + var seekableEnd = seekable.end(seekable.length - 1); + + // sync to live point (if VOD, our seekable was updated and we're simply adjusting) + seekTo = seekableEnd; + } + + if (seeking && this.beforeSeekableWindow_(seekable, currentTime)) { + var seekableStart = seekable.start(0); + + // sync to the beginning of the live window + // provide a buffer of .1 seconds to handle rounding/imprecise numbers + seekTo = seekableStart + SAFE_TIME_DELTA; + } + + if (typeof seekTo !== 'undefined') { + this.logger_('Trying to seek outside of seekable at time ' + currentTime + ' with ' + ('seekable range ' + printableRange(seekable) + '. Seeking to ') + (seekTo + '.')); + + this.seekTo(seekTo); + return true; + } + + return false; + } + + /** + * Handler for situations when we determine the player is waiting. + * + * @private + */ + + }, { + key: 'waiting_', + value: function waiting_() { + if (this.techWaiting_()) { + return; + } + + // All tech waiting checks failed. Use last resort correction + var currentTime = this.tech_.currentTime(); + var buffered = this.tech_.buffered(); + var currentRange = findRange(buffered, currentTime); + + // Sometimes the player can stall for unknown reasons within a contiguous buffered + // region with no indication that anything is amiss (seen in Firefox). Seeking to + // currentTime is usually enough to kickstart the player. This checks that the player + // is currently within a buffered region before attempting a corrective seek. + // Chrome does not appear to continue `timeupdate` events after a `waiting` event + // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also + // make sure there is ~3 seconds of forward buffer before taking any corrective action + // to avoid triggering an `unknownwaiting` event when the network is slow. + if (currentRange.length && currentTime + 3 <= currentRange.end(0)) { + this.cancelTimer_(); + this.seekTo(currentTime); + + this.logger_('Stopped at ' + currentTime + ' while inside a buffered region ' + ('[' + currentRange.start(0) + ' -> ' + currentRange.end(0) + ']. Attempting to resume ') + 'playback by seeking to the current time.'); + + // unknown waiting corrections may be useful for monitoring QoS + this.tech_.trigger({ type: 'usage', name: 'hls-unknown-waiting' }); + return; + } + } + + /** + * Handler for situations when the tech fires a `waiting` event + * + * @return {Boolean} + * True if an action (or none) was needed to correct the waiting. False if no + * checks passed + * @private + */ + + }, { + key: 'techWaiting_', + value: function techWaiting_() { + var seekable = this.seekable(); + var currentTime = this.tech_.currentTime(); + + if (this.tech_.seeking() && this.fixesBadSeeks_()) { + // Tech is seeking or bad seek fixed, no action needed + return true; + } + + if (this.tech_.seeking() || this.timer_ !== null) { + // Tech is seeking or already waiting on another action, no action needed + return true; + } + + if (this.beforeSeekableWindow_(seekable, currentTime)) { + var livePoint = seekable.end(seekable.length - 1); + + this.logger_('Fell out of live window at time ' + currentTime + '. Seeking to ' + ('live point (seekable end) ' + livePoint)); + this.cancelTimer_(); + this.seekTo(livePoint); + + // live window resyncs may be useful for monitoring QoS + this.tech_.trigger({ type: 'usage', name: 'hls-live-resync' }); + return true; + } + + var buffered = this.tech_.buffered(); + var nextRange = findNextRange(buffered, currentTime); + + if (this.videoUnderflow_(nextRange, buffered, currentTime)) { + // Even though the video underflowed and was stuck in a gap, the audio overplayed + // the gap, leading currentTime into a buffered range. Seeking to currentTime + // allows the video to catch up to the audio position without losing any audio + // (only suffering ~3 seconds of frozen video and a pause in audio playback). + this.cancelTimer_(); + this.seekTo(currentTime); + + // video underflow may be useful for monitoring QoS + this.tech_.trigger({ type: 'usage', name: 'hls-video-underflow' }); + return true; + } + + // check for gap + if (nextRange.length > 0) { + var difference = nextRange.start(0) - currentTime; + + this.logger_('Stopped at ' + currentTime + ', setting timer for ' + difference + ', seeking ' + ('to ' + nextRange.start(0))); + + this.timer_ = setTimeout(this.skipTheGap_.bind(this), difference * 1000, currentTime); + return true; + } + + // All checks failed. Returning false to indicate failure to correct waiting + return false; + } + }, { + key: 'afterSeekableWindow_', + value: function afterSeekableWindow_(seekable, currentTime) { + if (!seekable.length) { + // we can't make a solid case if there's no seekable, default to false + return false; + } + + if (currentTime > seekable.end(seekable.length - 1) + SAFE_TIME_DELTA) { + return true; + } + + return false; + } + }, { + key: 'beforeSeekableWindow_', + value: function beforeSeekableWindow_(seekable, currentTime) { + if (seekable.length && + // can't fall before 0 and 0 seekable start identifies VOD stream + seekable.start(0) > 0 && currentTime < seekable.start(0) - SAFE_TIME_DELTA) { + return true; + } + + return false; + } + }, { + key: 'videoUnderflow_', + value: function videoUnderflow_(nextRange, buffered, currentTime) { + if (nextRange.length === 0) { + // Even if there is no available next range, there is still a possibility we are + // stuck in a gap due to video underflow. + var gap = this.gapFromVideoUnderflow_(buffered, currentTime); + + if (gap) { + this.logger_('Encountered a gap in video from ' + gap.start + ' to ' + gap.end + '. ' + ('Seeking to current time ' + currentTime)); + + return true; + } + } + + return false; + } + + /** + * Timer callback. If playback still has not proceeded, then we seek + * to the start of the next buffered region. + * + * @private + */ + + }, { + key: 'skipTheGap_', + value: function skipTheGap_(scheduledCurrentTime) { + var buffered = this.tech_.buffered(); + var currentTime = this.tech_.currentTime(); + var nextRange = findNextRange(buffered, currentTime); + + this.cancelTimer_(); + + if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) { + return; + } + + this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); + + // only seek if we still have not played + this.seekTo(nextRange.start(0) + TIME_FUDGE_FACTOR); + + this.tech_.trigger({ type: 'usage', name: 'hls-gap-skip' }); + } + }, { + key: 'gapFromVideoUnderflow_', + value: function gapFromVideoUnderflow_(buffered, currentTime) { + // At least in Chrome, if there is a gap in the video buffer, the audio will continue + // playing for ~3 seconds after the video gap starts. This is done to account for + // video buffer underflow/underrun (note that this is not done when there is audio + // buffer underflow/underrun -- in that case the video will stop as soon as it + // encounters the gap, as audio stalls are more noticeable/jarring to a user than + // video stalls). The player's time will reflect the playthrough of audio, so the + // time will appear as if we are in a buffered region, even if we are stuck in a + // "gap." + // + // Example: + // video buffer: 0 => 10.1, 10.2 => 20 + // audio buffer: 0 => 20 + // overall buffer: 0 => 10.1, 10.2 => 20 + // current time: 13 + // + // Chrome's video froze at 10 seconds, where the video buffer encountered the gap, + // however, the audio continued playing until it reached ~3 seconds past the gap + // (13 seconds), at which point it stops as well. Since current time is past the + // gap, findNextRange will return no ranges. + // + // To check for this issue, we see if there is a gap that starts somewhere within + // a 3 second range (3 seconds +/- 1 second) back from our current time. + var gaps = findGaps(buffered); + + for (var i = 0; i < gaps.length; i++) { + var start = gaps.start(i); + var end = gaps.end(i); + + // gap is starts no more than 4 seconds back + if (currentTime - start < 4 && currentTime - start > 2) { + return { + start: start, + end: end + }; + } + } + + return null; + } + }]); + return PlaybackWatcher; + }(); + + var defaultOptions = { + errorInterval: 30, + getSource: function getSource(next) { + var tech = this.tech({ IWillNotUseThisInPlugins: true }); + var sourceObj = tech.currentSource_; + + return next(sourceObj); + } + }; + + /** + * Main entry point for the plugin + * + * @param {Player} player a reference to a videojs Player instance + * @param {Object} [options] an object with plugin options + * @private + */ + var initPlugin = function initPlugin(player, options) { + var lastCalled = 0; + var seekTo = 0; + var localOptions = videojs$1.mergeOptions(defaultOptions, options); + + player.ready(function () { + player.trigger({ type: 'usage', name: 'hls-error-reload-initialized' }); + }); + + /** + * Player modifications to perform that must wait until `loadedmetadata` + * has been triggered + * + * @private + */ + var loadedMetadataHandler = function loadedMetadataHandler() { + if (seekTo) { + player.currentTime(seekTo); + } + }; + + /** + * Set the source on the player element, play, and seek if necessary + * + * @param {Object} sourceObj An object specifying the source url and mime-type to play + * @private + */ + var setSource = function setSource(sourceObj) { + if (sourceObj === null || sourceObj === undefined) { + return; + } + seekTo = player.duration() !== Infinity && player.currentTime() || 0; + + player.one('loadedmetadata', loadedMetadataHandler); + + player.src(sourceObj); + player.trigger({ type: 'usage', name: 'hls-error-reload' }); + player.play(); + }; + + /** + * Attempt to get a source from either the built-in getSource function + * or a custom function provided via the options + * + * @private + */ + var errorHandler = function errorHandler() { + // Do not attempt to reload the source if a source-reload occurred before + // 'errorInterval' time has elapsed since the last source-reload + if (Date.now() - lastCalled < localOptions.errorInterval * 1000) { + player.trigger({ type: 'usage', name: 'hls-error-reload-canceled' }); + return; + } + + if (!localOptions.getSource || typeof localOptions.getSource !== 'function') { + videojs$1.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!'); + return; + } + lastCalled = Date.now(); + + return localOptions.getSource.call(player, setSource); + }; + + /** + * Unbind any event handlers that were bound by the plugin + * + * @private + */ + var cleanupEvents = function cleanupEvents() { + player.off('loadedmetadata', loadedMetadataHandler); + player.off('error', errorHandler); + player.off('dispose', cleanupEvents); + }; + + /** + * Cleanup before re-initializing the plugin + * + * @param {Object} [newOptions] an object with plugin options + * @private + */ + var reinitPlugin = function reinitPlugin(newOptions) { + cleanupEvents(); + initPlugin(player, newOptions); + }; + + player.on('error', errorHandler); + player.on('dispose', cleanupEvents); + + // Overwrite the plugin function so that we can correctly cleanup before + // initializing the plugin + player.reloadSourceOnError = reinitPlugin; + }; + + /** + * Reload the source when an error is detected as long as there + * wasn't an error previously within the last 30 seconds + * + * @param {Object} [options] an object with plugin options + */ + var reloadSourceOnError = function reloadSourceOnError(options) { + initPlugin(this, options); + }; + + var version$3 = "1.2.6"; + + // since VHS handles HLS and DASH (and in the future, more types), use * to capture all + videojs$1.use('*', function (player) { + return { + setSource: function setSource(srcObj, next) { + // pass null as the first argument to indicate that the source is not rejected + next(null, srcObj); + }, + + // VHS needs to know when seeks happen. For external seeks (generated at the player + // level), this middleware will capture the action. For internal seeks (generated at + // the tech level), we use a wrapped function so that we can handle it on our own + // (specified elsewhere). + setCurrentTime: function setCurrentTime(time) { + if (player.vhs && player.currentSource().src === player.vhs.source_.src) { + player.vhs.setCurrentTime(time); + } + + return time; + }, + + // Sync VHS after play requests. + // This specifically handles replay where the order of actions is + // play, video element will seek to 0 (skipping the setCurrentTime middleware) + // then triggers a play event. + play: function play() { + if (player.vhs && player.currentSource().src === player.vhs.source_.src) { + player.vhs.setCurrentTime(player.currentTime()); + } + } + }; + }); + + /** + * @file videojs-http-streaming.js + * + * The main file for the HLS project. + * License: https://github.com/videojs/videojs-http-streaming/blob/master/LICENSE + */ + + var Hls$1 = { + PlaylistLoader: PlaylistLoader, + Playlist: Playlist, + Decrypter: Decrypter, + AsyncStream: AsyncStream, + decrypt: decrypt, + utils: utils, + + STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector, + INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector, + comparePlaylistBandwidth: comparePlaylistBandwidth, + comparePlaylistResolution: comparePlaylistResolution, + + xhr: xhrFactory() + }; + + // 0.5 MB/s + var INITIAL_BANDWIDTH = 4194304; + + // Define getter/setters for config properites + ['GOAL_BUFFER_LENGTH', 'MAX_GOAL_BUFFER_LENGTH', 'GOAL_BUFFER_LENGTH_RATE', 'BUFFER_LOW_WATER_LINE', 'MAX_BUFFER_LOW_WATER_LINE', 'BUFFER_LOW_WATER_LINE_RATE', 'BANDWIDTH_VARIANCE'].forEach(function (prop) { + Object.defineProperty(Hls$1, prop, { + get: function get$$1() { + videojs$1.log.warn('using Hls.' + prop + ' is UNSAFE be sure you know what you are doing'); + return Config[prop]; + }, + set: function set$$1(value) { + videojs$1.log.warn('using Hls.' + prop + ' is UNSAFE be sure you know what you are doing'); + + if (typeof value !== 'number' || value < 0) { + videojs$1.log.warn('value of Hls.' + prop + ' must be greater than or equal to 0'); + return; + } + + Config[prop] = value; + } + }); + }); + + var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) { + var mpegurlRE = /^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i; + + if (mpegurlRE.test(type)) { + return 'hls'; + } + + var dashRE = /^application\/dash\+xml/i; + + if (dashRE.test(type)) { + return 'dash'; + } + + return null; + }; + + /** + * Updates the selectedIndex of the QualityLevelList when a mediachange happens in hls. + * + * @param {QualityLevelList} qualityLevels The QualityLevelList to update. + * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info. + * @function handleHlsMediaChange + */ + var handleHlsMediaChange = function handleHlsMediaChange(qualityLevels, playlistLoader) { + var newPlaylist = playlistLoader.media(); + var selectedIndex = -1; + + for (var i = 0; i < qualityLevels.length; i++) { + if (qualityLevels[i].id === newPlaylist.uri) { + selectedIndex = i; + break; + } + } + + qualityLevels.selectedIndex_ = selectedIndex; + qualityLevels.trigger({ + selectedIndex: selectedIndex, + type: 'change' + }); + }; + + /** + * Adds quality levels to list once playlist metadata is available + * + * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to. + * @param {Object} hls Hls object to listen to for media events. + * @function handleHlsLoadedMetadata + */ + var handleHlsLoadedMetadata = function handleHlsLoadedMetadata(qualityLevels, hls) { + hls.representations().forEach(function (rep) { + qualityLevels.addQualityLevel(rep); + }); + handleHlsMediaChange(qualityLevels, hls.playlists); + }; + + // HLS is a source handler, not a tech. Make sure attempts to use it + // as one do not cause exceptions. + Hls$1.canPlaySource = function () { + return videojs$1.log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.'); + }; + + var emeKeySystems = function emeKeySystems(keySystemOptions, videoPlaylist, audioPlaylist) { + if (!keySystemOptions) { + return keySystemOptions; + } + + // upsert the content types based on the selected playlist + var keySystemContentTypes = {}; + + for (var keySystem in keySystemOptions) { + keySystemContentTypes[keySystem] = { + audioContentType: 'audio/mp4; codecs="' + audioPlaylist.attributes.CODECS + '"', + videoContentType: 'video/mp4; codecs="' + videoPlaylist.attributes.CODECS + '"' + }; + + if (videoPlaylist.contentProtection && videoPlaylist.contentProtection[keySystem] && videoPlaylist.contentProtection[keySystem].pssh) { + keySystemContentTypes[keySystem].pssh = videoPlaylist.contentProtection[keySystem].pssh; + } + + // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url' + // so we need to prevent overwriting the URL entirely + if (typeof keySystemOptions[keySystem] === 'string') { + keySystemContentTypes[keySystem].url = keySystemOptions[keySystem]; + } + } + + return videojs$1.mergeOptions(keySystemOptions, keySystemContentTypes); + }; + + var setupEmeOptions = function setupEmeOptions(hlsHandler) { + if (hlsHandler.options_.sourceType !== 'dash') { + return; + } + var player = videojs$1.players[hlsHandler.tech_.options_.playerId]; + + if (player.eme) { + var sourceOptions = emeKeySystems(hlsHandler.source_.keySystems, hlsHandler.playlists.media(), hlsHandler.masterPlaylistController_.mediaTypes_.AUDIO.activePlaylistLoader.media()); + + if (sourceOptions) { + player.currentSource().keySystems = sourceOptions; + } + } + }; + + /** + * Whether the browser has built-in HLS support. + */ + Hls$1.supportsNativeHls = function () { + var video = document_1.createElement('video'); + + // native HLS is definitely not supported if HTML5 video isn't + if (!videojs$1.getTech('Html5').isSupported()) { + return false; + } + + // HLS manifests can go by many mime-types + var canPlay = [ + // Apple santioned + 'application/vnd.apple.mpegurl', + // Apple sanctioned for backwards compatibility + 'audio/mpegurl', + // Very common + 'audio/x-mpegurl', + // Very common + 'application/x-mpegurl', + // Included for completeness + 'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl']; + + return canPlay.some(function (canItPlay) { + return (/maybe|probably/i.test(video.canPlayType(canItPlay)) + ); + }); + }(); + + Hls$1.supportsNativeDash = function () { + if (!videojs$1.getTech('Html5').isSupported()) { + return false; + } + + return (/maybe|probably/i.test(document_1.createElement('video').canPlayType('application/dash+xml')) + ); + }(); + + Hls$1.supportsTypeNatively = function (type) { + if (type === 'hls') { + return Hls$1.supportsNativeHls; + } + + if (type === 'dash') { + return Hls$1.supportsNativeDash; + } + + return false; + }; + + /** + * HLS is a source handler, not a tech. Make sure attempts to use it + * as one do not cause exceptions. + */ + Hls$1.isSupported = function () { + return videojs$1.log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.'); + }; + + var Component$1 = videojs$1.getComponent('Component'); + + /** + * The Hls Handler object, where we orchestrate all of the parts + * of HLS to interact with video.js + * + * @class HlsHandler + * @extends videojs.Component + * @param {Object} source the soruce object + * @param {Tech} tech the parent tech object + * @param {Object} options optional and required options + */ + + var HlsHandler = function (_Component) { + inherits$3(HlsHandler, _Component); + + function HlsHandler(source, tech, options) { + classCallCheck$3(this, HlsHandler); + + // tech.player() is deprecated but setup a reference to HLS for + // backwards-compatibility + var _this = possibleConstructorReturn$3(this, (HlsHandler.__proto__ || Object.getPrototypeOf(HlsHandler)).call(this, tech, options.hls)); + + if (tech.options_ && tech.options_.playerId) { + var _player = videojs$1(tech.options_.playerId); + + if (!_player.hasOwnProperty('hls')) { + Object.defineProperty(_player, 'hls', { + get: function get$$1() { + videojs$1.log.warn('player.hls is deprecated. Use player.tech().hls instead.'); + tech.trigger({ type: 'usage', name: 'hls-player-access' }); + return _this; + } + }); + } + + // Set up a reference to the HlsHandler from player.vhs. This allows users to start + // migrating from player.tech_.hls... to player.vhs... for API access. Although this + // isn't the most appropriate form of reference for video.js (since all APIs should + // be provided through core video.js), it is a common pattern for plugins, and vhs + // will act accordingly. + _player.vhs = _this; + // deprecated, for backwards compatibility + _player.dash = _this; + } + + _this.tech_ = tech; + _this.source_ = source; + _this.stats = {}; + _this.setOptions_(); + + if (_this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) { + tech.overrideNativeAudioTracks(true); + tech.overrideNativeVideoTracks(true); + } else if (_this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) { + // overriding native HLS only works if audio tracks have been emulated + // error early if we're misconfigured + throw new Error('Overriding native HLS requires emulated tracks. ' + 'See https://git.io/vMpjB'); + } + + // listen for fullscreenchange events for this player so that we + // can adjust our quality selection quickly + _this.on(document_1, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], function (event) { + var fullscreenElement = document_1.fullscreenElement || document_1.webkitFullscreenElement || document_1.mozFullScreenElement || document_1.msFullscreenElement; + + if (fullscreenElement && fullscreenElement.contains(_this.tech_.el())) { + _this.masterPlaylistController_.smoothQualityChange_(); + } + }); + _this.on(_this.tech_, 'error', function () { + if (this.masterPlaylistController_) { + this.masterPlaylistController_.pauseLoading(); + } + }); + + _this.on(_this.tech_, 'play', _this.play); + return _this; + } + + createClass$2(HlsHandler, [{ + key: 'setOptions_', + value: function setOptions_() { + var _this2 = this; + + // defaults + this.options_.withCredentials = this.options_.withCredentials || false; + + if (typeof this.options_.blacklistDuration !== 'number') { + this.options_.blacklistDuration = 5 * 60; + } + + // start playlist selection at a reasonable bandwidth for + // broadband internet (0.5 MB/s) or mobile (0.0625 MB/s) + if (typeof this.options_.bandwidth !== 'number') { + this.options_.bandwidth = INITIAL_BANDWIDTH; + } + + // If the bandwidth number is unchanged from the initial setting + // then this takes precedence over the enableLowInitialPlaylist option + this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === INITIAL_BANDWIDTH; + + // grab options passed to player.src + ['withCredentials', 'bandwidth'].forEach(function (option) { + if (typeof _this2.source_[option] !== 'undefined') { + _this2.options_[option] = _this2.source_[option]; + } + }); + + this.bandwidth = this.options_.bandwidth; + } + /** + * called when player.src gets called, handle a new source + * + * @param {Object} src the source object to handle + */ + + }, { + key: 'src', + value: function src(_src, type) { + var _this3 = this; + + // do nothing if the src is falsey + if (!_src) { + return; + } + this.setOptions_(); + // add master playlist controller options + this.options_.url = this.source_.src; + this.options_.tech = this.tech_; + this.options_.externHls = Hls$1; + this.options_.sourceType = simpleTypeFromSourceType(type); + // Whenever we seek internally, we should update both the tech and call our own + // setCurrentTime function. This is needed because "seeking" events aren't always + // reliable. External seeks (via the player object) are handled via middleware. + this.options_.seekTo = function (time) { + _this3.tech_.setCurrentTime(time); + _this3.setCurrentTime(time); + }; + + this.masterPlaylistController_ = new MasterPlaylistController(this.options_); + this.playbackWatcher_ = new PlaybackWatcher(videojs$1.mergeOptions(this.options_, { + seekable: function seekable$$1() { + return _this3.seekable(); + } + })); + + this.masterPlaylistController_.on('error', function () { + var player = videojs$1.players[_this3.tech_.options_.playerId]; + + player.error(_this3.masterPlaylistController_.error); + }); + + // `this` in selectPlaylist should be the HlsHandler for backwards + // compatibility with < v2 + this.masterPlaylistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : Hls$1.STANDARD_PLAYLIST_SELECTOR.bind(this); + + this.masterPlaylistController_.selectInitialPlaylist = Hls$1.INITIAL_PLAYLIST_SELECTOR.bind(this); + + // re-expose some internal objects for backwards compatibility with < v2 + this.playlists = this.masterPlaylistController_.masterPlaylistLoader_; + this.mediaSource = this.masterPlaylistController_.mediaSource; + + // Proxy assignment of some properties to the master playlist + // controller. Using a custom property for backwards compatibility + // with < v2 + Object.defineProperties(this, { + selectPlaylist: { + get: function get$$1() { + return this.masterPlaylistController_.selectPlaylist; + }, + set: function set$$1(selectPlaylist) { + this.masterPlaylistController_.selectPlaylist = selectPlaylist.bind(this); + } + }, + throughput: { + get: function get$$1() { + return this.masterPlaylistController_.mainSegmentLoader_.throughput.rate; + }, + set: function set$$1(throughput) { + this.masterPlaylistController_.mainSegmentLoader_.throughput.rate = throughput; + // By setting `count` to 1 the throughput value becomes the starting value + // for the cumulative average + this.masterPlaylistController_.mainSegmentLoader_.throughput.count = 1; + } + }, + bandwidth: { + get: function get$$1() { + return this.masterPlaylistController_.mainSegmentLoader_.bandwidth; + }, + set: function set$$1(bandwidth) { + this.masterPlaylistController_.mainSegmentLoader_.bandwidth = bandwidth; + // setting the bandwidth manually resets the throughput counter + // `count` is set to zero that current value of `rate` isn't included + // in the cumulative average + this.masterPlaylistController_.mainSegmentLoader_.throughput = { + rate: 0, + count: 0 + }; + } + }, + /** + * `systemBandwidth` is a combination of two serial processes bit-rates. The first + * is the network bitrate provided by `bandwidth` and the second is the bitrate of + * the entire process after that - decryption, transmuxing, and appending - provided + * by `throughput`. + * + * Since the two process are serial, the overall system bandwidth is given by: + * sysBandwidth = 1 / (1 / bandwidth + 1 / throughput) + */ + systemBandwidth: { + get: function get$$1() { + var invBandwidth = 1 / (this.bandwidth || 1); + var invThroughput = void 0; + + if (this.throughput > 0) { + invThroughput = 1 / this.throughput; + } else { + invThroughput = 0; + } + + var systemBitrate = Math.floor(1 / (invBandwidth + invThroughput)); + + return systemBitrate; + }, + set: function set$$1() { + videojs$1.log.error('The "systemBandwidth" property is read-only'); + } + } + }); + + Object.defineProperties(this.stats, { + bandwidth: { + get: function get$$1() { + return _this3.bandwidth || 0; + }, + enumerable: true + }, + mediaRequests: { + get: function get$$1() { + return _this3.masterPlaylistController_.mediaRequests_() || 0; + }, + enumerable: true + }, + mediaRequestsAborted: { + get: function get$$1() { + return _this3.masterPlaylistController_.mediaRequestsAborted_() || 0; + }, + enumerable: true + }, + mediaRequestsTimedout: { + get: function get$$1() { + return _this3.masterPlaylistController_.mediaRequestsTimedout_() || 0; + }, + enumerable: true + }, + mediaRequestsErrored: { + get: function get$$1() { + return _this3.masterPlaylistController_.mediaRequestsErrored_() || 0; + }, + enumerable: true + }, + mediaTransferDuration: { + get: function get$$1() { + return _this3.masterPlaylistController_.mediaTransferDuration_() || 0; + }, + enumerable: true + }, + mediaBytesTransferred: { + get: function get$$1() { + return _this3.masterPlaylistController_.mediaBytesTransferred_() || 0; + }, + enumerable: true + }, + mediaSecondsLoaded: { + get: function get$$1() { + return _this3.masterPlaylistController_.mediaSecondsLoaded_() || 0; + }, + enumerable: true + }, + buffered: { + get: function get$$1() { + return timeRangesToArray(_this3.tech_.buffered()); + }, + enumerable: true + }, + currentTime: { + get: function get$$1() { + return _this3.tech_.currentTime(); + }, + enumerable: true + }, + currentSource: { + get: function get$$1() { + return _this3.tech_.currentSource_; + }, + enumerable: true + }, + currentTech: { + get: function get$$1() { + return _this3.tech_.name_; + }, + enumerable: true + }, + duration: { + get: function get$$1() { + return _this3.tech_.duration(); + }, + enumerable: true + }, + master: { + get: function get$$1() { + return _this3.playlists.master; + }, + enumerable: true + }, + playerDimensions: { + get: function get$$1() { + return _this3.tech_.currentDimensions(); + }, + enumerable: true + }, + seekable: { + get: function get$$1() { + return timeRangesToArray(_this3.tech_.seekable()); + }, + enumerable: true + }, + timestamp: { + get: function get$$1() { + return Date.now(); + }, + enumerable: true + }, + videoPlaybackQuality: { + get: function get$$1() { + return _this3.tech_.getVideoPlaybackQuality(); + }, + enumerable: true + } + }); + + this.tech_.one('canplay', this.masterPlaylistController_.setupFirstPlay.bind(this.masterPlaylistController_)); + + this.masterPlaylistController_.on('selectedinitialmedia', function () { + // Add the manual rendition mix-in to HlsHandler + renditionSelectionMixin(_this3); + setupEmeOptions(_this3); + }); + + // the bandwidth of the primary segment loader is our best + // estimate of overall bandwidth + this.on(this.masterPlaylistController_, 'progress', function () { + this.tech_.trigger('progress'); + }); + + this.tech_.ready(function () { + return _this3.setupQualityLevels_(); + }); + + // do nothing if the tech has been disposed already + // this can occur if someone sets the src in player.ready(), for instance + if (!this.tech_.el()) { + return; + } + + this.tech_.src(videojs$1.URL.createObjectURL(this.masterPlaylistController_.mediaSource)); + } + + /** + * Initializes the quality levels and sets listeners to update them. + * + * @method setupQualityLevels_ + * @private + */ + + }, { + key: 'setupQualityLevels_', + value: function setupQualityLevels_() { + var _this4 = this; + + var player = videojs$1.players[this.tech_.options_.playerId]; + + if (player && player.qualityLevels) { + this.qualityLevels_ = player.qualityLevels(); + + this.masterPlaylistController_.on('selectedinitialmedia', function () { + handleHlsLoadedMetadata(_this4.qualityLevels_, _this4); + }); + + this.playlists.on('mediachange', function () { + handleHlsMediaChange(_this4.qualityLevels_, _this4.playlists); + }); + } + } + + /** + * Begin playing the video. + */ + + }, { + key: 'play', + value: function play() { + this.masterPlaylistController_.play(); + } + + /** + * a wrapper around the function in MasterPlaylistController + */ + + }, { + key: 'setCurrentTime', + value: function setCurrentTime(currentTime) { + this.masterPlaylistController_.setCurrentTime(currentTime); + } + + /** + * a wrapper around the function in MasterPlaylistController + */ + + }, { + key: 'duration', + value: function duration$$1() { + return this.masterPlaylistController_.duration(); + } + + /** + * a wrapper around the function in MasterPlaylistController + */ + + }, { + key: 'seekable', + value: function seekable$$1() { + return this.masterPlaylistController_.seekable(); + } + + /** + * Abort all outstanding work and cleanup. + */ + + }, { + key: 'dispose', + value: function dispose() { + if (this.playbackWatcher_) { + this.playbackWatcher_.dispose(); + } + if (this.masterPlaylistController_) { + this.masterPlaylistController_.dispose(); + } + if (this.qualityLevels_) { + this.qualityLevels_.dispose(); + } + get$2(HlsHandler.prototype.__proto__ || Object.getPrototypeOf(HlsHandler.prototype), 'dispose', this).call(this); + } + }]); + return HlsHandler; + }(Component$1); + + /** + * The Source Handler object, which informs video.js what additional + * MIME types are supported and sets up playback. It is registered + * automatically to the appropriate tech based on the capabilities of + * the browser it is running in. It is not necessary to use or modify + * this object in normal usage. + */ + + var HlsSourceHandler = { + name: 'videojs-http-streaming', + VERSION: version$3, + canHandleSource: function canHandleSource(srcObj) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + var localOptions = videojs$1.mergeOptions(videojs$1.options, options); + + return HlsSourceHandler.canPlayType(srcObj.type, localOptions); + }, + handleSource: function handleSource(source, tech) { + var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {}; + + var localOptions = videojs$1.mergeOptions(videojs$1.options, options); + + tech.hls = new HlsHandler(source, tech, localOptions); + tech.hls.xhr = xhrFactory(); + + tech.hls.src(source.src, source.type); + return tech.hls; + }, + canPlayType: function canPlayType(type) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + var _videojs$mergeOptions = videojs$1.mergeOptions(videojs$1.options, options), + overrideNative = _videojs$mergeOptions.hls.overrideNative; + + var supportedType = simpleTypeFromSourceType(type); + var canUseMsePlayback = supportedType && (!Hls$1.supportsTypeNatively(supportedType) || overrideNative); + + return canUseMsePlayback ? 'maybe' : ''; + } + }; + + if (typeof videojs$1.MediaSource === 'undefined' || typeof videojs$1.URL === 'undefined') { + videojs$1.MediaSource = MediaSource; + videojs$1.URL = URL$1; + } + + // register source handlers with the appropriate techs + if (MediaSource.supportsNativeMediaSources()) { + videojs$1.getTech('Html5').registerSourceHandler(HlsSourceHandler, 0); + } + + videojs$1.HlsHandler = HlsHandler; + videojs$1.HlsSourceHandler = HlsSourceHandler; + videojs$1.Hls = Hls$1; + if (!videojs$1.use) { + videojs$1.registerComponent('Hls', Hls$1); + } + videojs$1.options.hls = videojs$1.options.hls || {}; + + if (videojs$1.registerPlugin) { + videojs$1.registerPlugin('reloadSourceOnError', reloadSourceOnError); + } else { + videojs$1.plugin('reloadSourceOnError', reloadSourceOnError); + } + + return videojs$1; + +}))); |