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<?php |
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/** |
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* This file is part of the PHP-FFmpeg-video-streaming package. |
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* |
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* (c) Amin Yazdanpanah <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Streaming\Filters; |
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use Streaming\File; |
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use Streaming\HLS; |
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use Streaming\Representation; |
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use Streaming\Utilities; |
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class HLSFilter extends Filter |
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{ |
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/** |
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* @param $media |
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* @return mixed|void |
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*/ |
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public function setFilter($media): void |
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{ |
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$this->filter = $this->HLSFilter($media); |
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} |
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/** |
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* @param HLS $hls |
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* @return array |
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*/ |
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private function HLSFilter(HLS $hls): array |
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{ |
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$filter = []; |
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$representations = $hls->getRepresentations(); |
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$path_parts = $hls->getPathInfo(); |
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$dirname = str_replace("\\", "/", $path_parts["dirname"]); |
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list($ts_sub_dir, $base_url) = $this->getSubDirectory($hls, $dirname); |
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foreach ($representations as $key => $representation) { |
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if ($key) { |
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$filter = array_merge($filter, $this->getFormats($hls)); |
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} |
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$filter[] = "-s:v"; |
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$filter[] = $representation->getResize(); |
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$filter[] = "-crf"; |
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$filter[] = "20"; |
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$filter[] = "-sc_threshold"; |
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$filter[] = "0"; |
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$filter[] = "-g"; |
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$filter[] = "48"; |
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$filter[] = "-keyint_min"; |
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$filter[] = "48"; |
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$filter[] = "-hls_list_size"; |
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$filter[] = "0"; |
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$filter[] = "-hls_time"; |
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$filter[] = $hls->getHlsTime(); |
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$filter[] = "-hls_allow_cache"; |
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$filter[] = (int)$hls->isHlsAllowCache(); |
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$filter[] = "-b:v"; |
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$filter[] = $representation->getKiloBitrate() . "k"; |
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$filter = array_merge($filter, $this->getAudioBitrate($representation)); |
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$filter[] = "-maxrate"; |
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$filter[] = intval($representation->getKiloBitrate() * 1.2) . "k"; |
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$filter[] = "-hls_segment_filename"; |
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$filter[] = $dirname . "/" . $ts_sub_dir . $path_parts["filename"] . "_" . $representation->getHeight() . "p_%04d.ts"; |
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$filter = array_merge($filter, $this->getBaseURL($base_url)); |
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$filter = array_merge($filter, $this->getKeyInfo($hls)); |
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$filter[] = "-strict"; |
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$filter[] = $hls->getStrict(); |
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if (end($representations) !== $representation) { |
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$filter[] = $dirname . "/" . $path_parts["filename"] . "_" . $representation->getHeight() . "p.m3u8"; |
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} |
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} |
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return $filter; |
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} |
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/** |
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* @param HLS $hls |
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* @param $dirname |
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* @return array |
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*/ |
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private function getSubDirectory(HLS $hls, $dirname): array |
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{ |
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$ts_sub_dir = Utilities::appendSlash($hls->getTsSubDirectory()); |
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$base_url = Utilities::appendSlash($hls->getHlsBaseUrl()); |
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if ($ts_sub_dir) { |
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File::makeDir($dirname . DIRECTORY_SEPARATOR . $ts_sub_dir); |
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$base_url = $base_url . $hls->getTsSubDirectory() . "/"; |
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} |
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return [$ts_sub_dir, $base_url]; |
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} |
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/** |
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* @param HLS $hls |
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* @return array |
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*/ |
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private function getFormats(HLS $hls): array |
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{ |
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$format = ['-c:v', $hls->getFormat()->getVideoCodec()]; |
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$audio_format = $hls->getFormat()->getAudioCodec(); |
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return $audio_format ? array_merge($format, ['-c:a', $audio_format]) : $format; |
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} |
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/** |
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* @param $base_url |
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* @return array |
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*/ |
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private function getBaseURL($base_url): array |
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{ |
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return $base_url ? ["-hls_base_url", $base_url] : []; |
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} |
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/** |
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* @param HLS $hls |
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* @return array |
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*/ |
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private function getKeyInfo(HLS $hls): array |
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{ |
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return $hls->getHlsKeyInfoFile() ? ["-hls_key_info_file", $hls->getHlsKeyInfoFile()] : []; |
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} |
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/** |
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* @param Representation $representation |
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* @return array |
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*/ |
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private function getAudioBitrate(Representation $representation): array |
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{ |
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return $representation->getAudioKiloBitrate() ? ["-b:a", $representation->getAudioKiloBitrate() . "k"] : []; |
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} |
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} |
aminyazdanpanah /
PHP-FFmpeg-video-streaming
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