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<?php |
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namespace ProtoneMedia\LaravelFFMpeg\Exporters; |
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use Illuminate\Support\Collection; |
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use Illuminate\Support\Str; |
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use ProtoneMedia\LaravelFFMpeg\Drivers\PHPFFMpeg; |
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use ProtoneMedia\LaravelFFMpeg\Filesystem\Media; |
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use ProtoneMedia\LaravelFFMpeg\Http\DynamicHLSPlaylist; |
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use ProtoneMedia\LaravelFFMpeg\MediaOpener; |
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class HLSPlaylistGenerator implements PlaylistGenerator |
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{ |
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const PLAYLIST_START = '#EXTM3U'; |
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const PLAYLIST_END = '#EXT-X-ENDLIST'; |
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/** |
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* @var string |
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*/ |
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private $uuid; |
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/** |
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* Setter for the UUID. |
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* |
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* @param string $uuid |
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* @return self |
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*/ |
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public function setUuid(string $uuid): self |
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{ |
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$this->uuid = $uuid; |
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return $this; |
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} |
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/** |
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* Extracts the framerate from the given media and formats it in a |
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* suitable format. |
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* |
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* @param \ProtoneMedia\LaravelFFMpeg\MediaOpener $media |
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* @return mixed |
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*/ |
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private function getFrameRate(MediaOpener $media) |
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{ |
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$mediaStream = $media->getVideoStream(); |
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$frameRate = trim(Str::before(optional($mediaStream)->get('avg_frame_rate'), "/1")); |
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if (!$frameRate || Str::endsWith($frameRate, '/0')) { |
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return null; |
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} |
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if (Str::contains($frameRate, '/')) { |
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[$numerator, $denominator] = explode('/', $frameRate); |
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$frameRate = $numerator / $denominator; |
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} |
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return $frameRate ? number_format($frameRate, 3, '.', '') : null; |
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} |
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/** |
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* Return the line from the master playlist that references the given segment playlist. |
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* |
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* @param \ProtoneMedia\LaravelFFMpeg\Filesystem\Media $playlistMedia |
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* @param string $key |
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* @return string |
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*/ |
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private function getStreamInfoLine(Media $segmentPlaylistMedia, string $key): string |
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{ |
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$segmentPlaylist = $segmentPlaylistMedia->getDisk()->get( |
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$segmentPlaylistMedia->getDirectory() . HLSExporter::generateTemporarySegmentPlaylistFilename($key, $this->uuid) |
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); |
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$lines = DynamicHLSPlaylist::parseLines($segmentPlaylist)->filter(); |
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return $lines->get($lines->search($segmentPlaylistMedia->getFilename()) - 1); |
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} |
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/** |
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* Loops through all segment playlists and generates a main playlist. It finds |
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* the relative paths to the segment playlists and adds the framerate when |
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* to each playlist. |
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* |
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* @param array $segmentPlaylists |
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* @param \ProtoneMedia\LaravelFFMpeg\Drivers\PHPFFMpeg $driver |
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* @return string |
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*/ |
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public function get(array $segmentPlaylists, PHPFFMpeg $driver): string |
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{ |
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return Collection::make($segmentPlaylists)->map(function (Media $segmentPlaylist, $key) use ($driver) { |
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$streamInfoLine = $this->getStreamInfoLine($segmentPlaylist, $key); |
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$media = (new MediaOpener($segmentPlaylist->getDisk(), $driver)) |
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->openWithInputOptions($segmentPlaylist->getPath(), ['-allowed_extensions', 'ALL']); |
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if ($frameRate = $this->getFrameRate($media)) { |
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$streamInfoLine .= ",FRAME-RATE={$frameRate}"; |
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} |
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return [$streamInfoLine, $segmentPlaylist->getFilename()]; |
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})->collapse() |
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->prepend(static::PLAYLIST_START) |
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->push(static::PLAYLIST_END) |
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->implode(PHP_EOL); |
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} |
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} |
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protonemedia /
laravel-ffmpeg
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This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.