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<?php
class Stream
{
public function __construct(Room $room, $selection, $language, $translation_label = null)
{
$this->room = $room;
$this->selection = $selection;
$this->language = $language;
$this->translation_label = (empty($translation_label)) ? $language : $translation_label;
}
public function getRoom()
{
return $this->room;
}
public function getSelection()
{
return $this->selection;
}
public function getLanguage()
{
return $this->language;
}
public function getTranslationLabel()
{
return $this->translation_label;
}
public function isTranslated()
{
return !empty($this->getLanguage()) &&
$this->getLanguage() !== 'native';
}
public function getVideoSize()
{
switch($this->getSelection())
{
case 'sd':
return array(1024, 576);
case 'slides':
case 'hd':
return array(1920, 1080);
default:
return null;
}
}
public function getVideoWidth()
{
$sz = $this->getVideoSize();
return $sz[0];
}
public function getVideoHeight()
{
$sz = $this->getVideoSize();
return $sz[1];
}
public function getTab()
{
switch($this->getSelection())
{
case 'sd':
case 'hd':
return 'video';
default:
return $this->getSelection();
}
}
public function getPlayerType()
{
return $this->getTab();
}
public function getDisplay()
{
$display = $this->getRoom()->getDisplay().' ';
switch($this->getSelection())
{
case 'hd':
$display .= 'FullHD Video';
break;
case 'sd':
$display .= 'SD Video';
break;
case 'music':
$display .= 'Radio';
break;
case 'dash':
# no special attribution, this is the "normal" stream
break;
default:
$display .= ucfirst($this->getSelection());
break;
}
if($this->isTranslated())
$display .= ' ('. $this->getTranslationLabel() .')';
return $display;
}
public function getEmbedUrl()
{
return joinpath([
baseurl(),
$this->getRoom()->getConference()->getSlug(),
'embed',
rawurlencode($this->getRoom()->getSlug()),
rawurlencode($this->getSelection()),
rawurlencode($this->getLanguage()),
]);
}
public function getVideoUrl($proto, $selection=null)
{
if (!$selection) {
$selection = $this->getSelection();
}
switch($proto)
{
case 'webm':
return proto().'://'.joinpath([$GLOBALS['CONFIG']['CDN'], rawurlencode($this->getRoom()->getStream()).'_'.rawurlencode($this->getLanguage()).'_'.rawurlencode($selection).'.webm']);
case 'hls':
return proto().'://'.joinpath([$GLOBALS['CONFIG']['CDN'], 'hls', rawurlencode($this->getRoom()->getStream()).'/'.rawurlencode($this->getLanguage()).'_'.rawurlencode($selection).'.m3u8']);
}
return null;
}
public function getVideoTech($proto)
{
switch($proto)
{
case 'webm':
if($this->getSelection() == 'hd')
return '1920x1080, VP9+Opus in WebM, 3.5 MBit/s';
else if($this->getSelection() == 'sd')
return '1024x576, VP9+Opus in WebM, 1 MBit/s';
case 'hls':
if($this->getSelection() == 'hd')
return '1920x1080, h264+AAC im MPEG-TS-Container via HTTP, 3 MBit/s';
else if($this->getSelection() == 'sd')
return '1024x576, h264+AAC im MPEG-TS-Container via HTTP, 800 kBit/s';
case 'dash':
return 'VP9+Opus mit WebM-Segmenten';
}
return null;
}
public static function getVideoProtos()
{
return array(
'webm' => 'WebM',
'hls' => 'HLS',
);
}
public function getSlidesUrl($proto)
{
return $this->getVideoUrl($proto);
}
public function getSlidesTech($proto)
{
switch($proto)
{
case 'webm':
return '1024x576, VP8+Vorbis in WebM, 400 kBit/s';
case 'hls':
return '1024x576, h264+AAC im MPEG-TS-Container via HTTP, 400 kBit/s';
}
return null;
}
public static function getSlidesProtos()
{
return Stream::getVideoProtos();
}
public function getAudioUrl($proto)
{
switch($proto)
{
case 'mp3':
return proto().'://'.joinpath([$GLOBALS['CONFIG']['CDN'], rawurlencode($this->getRoom()->getStream()).'_'.rawurlencode($this->getLanguage()).'.mp3']);
case 'opus':
return proto().'://'.joinpath([$GLOBALS['CONFIG']['CDN'], rawurlencode($this->getRoom()->getStream()).'_'.rawurlencode($this->getLanguage()).'.opus']);
}
return null;
}
public function getAudioTech($proto)
{
switch($proto)
{
case 'mp3':
return 'MP3-Audio, 96 kBit/s';
case 'opus':
return 'Opus-Audio, 64 kBit/s';
}
return null;
}
public static function getAudioProtos()
{
return array(
'mp3' => 'MP3',
'opus' => 'Opus',
);
}
public function getMusicUrl($proto)
{
switch($proto)
{
case 'mp3':
return proto().'://'.joinpath([$GLOBALS['CONFIG']['CDN'], rawurlencode($this->getRoom()->getStream()).'.mp3']);
case 'opus':
return proto().'://'.joinpath([$GLOBALS['CONFIG']['CDN'], rawurlencode($this->getRoom()->getStream()).'.opus']);
default:
return null;
}
}
public function getMusicTech($proto)
{
switch($proto)
{
case 'mp3':
return 'MP3-Audio, 192 kBit/s';
case 'opus':
return 'Opus-Audio, 96 kBit/s';
}
return null;
}
public static function getMusicProtos()
{
return array(
'mp3' => 'MP3',
'opus' => 'Opus',
);
}
public function getPoster() {
return proto().'://'.joinpath([$GLOBALS['CONFIG']['CDN'], 'thumbnail', $this->getRoom()->getStream(), 'poster.jpeg']);
}
}
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