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<?php |
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namespace Pbmedia\LaravelFFMpeg; |
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use FFMpeg\Format\VideoInterface; |
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use Pbmedia\LaravelFFMpeg\SegmentedExporter; |
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class HLSPlaylistExporter extends MediaExporter |
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{ |
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protected $segmentedExporters = []; |
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protected $playlistPath; |
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protected $segmentLength = 10; |
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protected $saveMethod = 'savePlaylist'; |
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protected $progressCallback; |
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public function addFormat(VideoInterface $format, callable $callback = null): MediaExporter |
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{ |
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$segmentedExporter = $this->getSegmentedExporterFromFormat($format); |
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if ($callback) { |
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$callback($segmentedExporter->getMedia()); |
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} |
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$this->segmentedExporters[] = $segmentedExporter; |
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return $this; |
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} |
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public function getFormatsSorted(): array |
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{ |
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return array_map(function ($exporter) { |
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return $exporter->getFormat(); |
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}, $this->getSegmentedExportersSorted()); |
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} |
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public function getSegmentedExportersSorted(): array |
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{ |
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usort($this->segmentedExporters, function ($exportedA, $exportedB) { |
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return $exportedA->getFormat()->getKiloBitrate() <=> $exportedB->getFormat()->getKiloBitrate(); |
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}); |
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return $this->segmentedExporters; |
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} |
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public function setPlaylistPath(string $playlistPath): MediaExporter |
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{ |
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$this->playlistPath = $playlistPath; |
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return $this; |
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} |
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public function setSegmentLength(int $segmentLength): MediaExporter |
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{ |
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$this->segmentLength = $segmentLength; |
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foreach ($this->segmentedExporters as $segmentedExporter) { |
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$segmentedExporter->setSegmentLength($segmentLength); |
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} |
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return $this; |
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} |
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protected function getSegmentedExporterFromFormat(VideoInterface $format): SegmentedExporter |
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{ |
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$media = clone $this->media; |
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return (new SegmentedExporter($media)) |
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->inFormat($format); |
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} |
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public function getSegmentedExporters(): array |
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{ |
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return $this->segmentedExporters; |
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} |
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public function onProgress(callable $callback) |
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{ |
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$this->progressCallback = $callback; |
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return $this; |
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} |
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private function getSegmentedProgressCallback($key): callable |
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{ |
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return function ($video, $format, $percentage) use ($key) { |
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$previousCompletedSegments = $key / count($this->segmentedExporters) * 100; |
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call_user_func($this->progressCallback, |
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$previousCompletedSegments + ($percentage / count($this->segmentedExporters)) |
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); |
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}; |
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} |
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public function prepareSegmentedExporters() |
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{ |
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foreach ($this->segmentedExporters as $key => $segmentedExporter) { |
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if ($this->progressCallback) { |
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$segmentedExporter->getFormat()->on('progress', $this->getSegmentedProgressCallback($key)); |
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} |
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$segmentedExporter->setSegmentLength($this->segmentLength); |
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} |
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return $this; |
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} |
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protected function exportStreams() |
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{ |
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$this->prepareSegmentedExporters(); |
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foreach ($this->segmentedExporters as $key => $segmentedExporter) { |
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$segmentedExporter->saveStream($this->playlistPath); |
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} |
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} |
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protected function getMasterPlaylistContents(): string |
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{ |
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$lines = ['#EXTM3U']; |
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foreach ($this->getSegmentedExportersSorted() as $segmentedExporter) { |
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$bitrate = $segmentedExporter->getFormat()->getKiloBitrate() * 1000; |
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$lines[] = '#EXT-X-STREAM-INF:BANDWIDTH=' . $bitrate; |
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$lines[] = $segmentedExporter->getPlaylistFilename(); |
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} |
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return implode(PHP_EOL, $lines); |
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} |
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public function savePlaylist(string $playlistPath): MediaExporter |
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{ |
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$this->setPlaylistPath($playlistPath); |
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$this->exportStreams(); |
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file_put_contents( |
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$playlistPath, |
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$this->getMasterPlaylistContents() |
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); |
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return $this; |
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} |
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} |
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protonemedia /
laravel-ffmpeg
