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<?php
namespace YoutubeDownloader;
/**
* StreamMap
*/
class StreamMap
{
/**
* Creates a StreamMap from VideoInfo
*
* @param VideoInfo $video_info
* @return StreamMap
*/
public static function createFromVideoInfo(VideoInfo $video_info)
{
// get the url_encoded_fmt_stream_map, and explode on comma
$streams = explode(',', $video_info->getStreamMapString());
$formats = explode(',', $video_info->getAdaptiveFormatsString());
return new self($streams, $formats);
}
private $streams = [];
private $formats = [];
/**
* Creates a StreamMap from streams and formats arrays
*
* @param array $streams
* @param array $formats
* @return self
*/
private function __construct(array $streams, array $formats)
{
$this->streams = $this->parseStreams($streams);
$this->formats = $this->parseStreams($formats);
}
/**
* Parses an array of streams
*
* @param array $streams
* @return array
*/
private function parseStreams(array $streams)
{
$formats = [];
if (count($streams) === 1 and $streams[0] === '' )
{
return $formats;
}
foreach ($streams as $format)
{
parse_str($format, $format_info);
parse_str(urldecode($format_info['url']), $url_info);
if (isset($format_info['bitrate']))
{
$quality = isset($format_info['quality_label']) ? $format_info['quality_label'] : round($format_info['bitrate']/1000).'k';
}
else
{
$quality = isset($format_info['quality']) ? $format_info['quality'] : '';
}
$type = explode(';', $format_info['type']);
$formats[] = [
'itag' => $format_info['itag'],
'quality' => $quality,
'type' => $type[0],
'url' => $format_info['url'],
'expires' => isset($url_info['expire']) ? date("G:i:s T", $url_info['expire']) : '',
'ipbits' => isset($url_info['ipbits']) ? $url_info['ipbits'] : '',
'ip' => isset($url_info['ip']) ? $url_info['ip'] : '',
];
}
return $formats;
}
/**
* Get the streams
*
* @return string
*/
public function getStreams()
{
return $this->streams;
}
/**
* Get the formats
*
* @return string
*/
public function getFormats()
{
return $this->formats;
}
}