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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\Representation; |
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use Streaming\Utiles; |
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class HLSFilter extends Filter |
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{ |
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/** @var \Streaming\HLS */ |
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private $hls; |
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/** @var string */ |
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private $dirname; |
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/** @var string */ |
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private $filename; |
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/** @var string */ |
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private $seg_sub_dir; |
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/** @var string */ |
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private $base_url; |
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/** @var string */ |
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private $seg_filename; |
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/** |
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* @param |
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* @return array |
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*/ |
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private function getFormats(): array |
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{ |
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$format = ['-c:v', $this->hls->getFormat()->getVideoCodec()]; |
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$audio_format = $this->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 Representation $rep |
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* @param bool $not_last |
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* @return array |
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*/ |
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private function playlistPath(Representation $rep, bool $not_last): array |
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{ |
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return $not_last ? [$this->dirname . "/" . $this->filename . "_" . $rep->getHeight() . "p.m3u8"] : []; |
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} |
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/** |
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* @param Representation $rep |
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* @return array |
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*/ |
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private function getAudioBitrate(Representation $rep): array |
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{ |
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return $rep->getAudioKiloBitrate() ? ["-b:a", $rep->getAudioKiloBitrate() . "k"] : []; |
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} |
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/** |
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* @return array |
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*/ |
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private function getBaseURL(): array |
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{ |
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return $this->base_url ? ["-hls_base_url", $this->base_url] : []; |
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} |
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/** |
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* @param |
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* @return array |
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*/ |
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private function getKeyInfo(): array |
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{ |
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return $this->hls->getHlsKeyInfoFile() ? ["-hls_key_info_file", $this->hls->getHlsKeyInfoFile()] : []; |
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} |
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/** |
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* @return string |
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*/ |
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private function getInitFilename(): string |
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{ |
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return $this->seg_sub_dir . $this->filename . "_" . $this->hls->getHlsFmp4InitFilename(); |
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} |
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/** |
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* @param Representation $rep |
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* @return string |
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*/ |
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private function getSegmentFilename(Representation $rep): string |
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{ |
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$ext = ($this->hls->getHlsFmp4InitFilename() === "fmp4") ? "m4s" : "ts"; |
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return $this->seg_filename . "_" . $rep->getHeight() . "p_%04d." . $ext; |
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} |
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/** |
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* @param Representation $rep |
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* @return array |
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*/ |
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private function initArgs(Representation $rep): array |
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{ |
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return [ |
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"-s:v", $rep->getResize(), |
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"-crf", "20", |
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"-sc_threshold", "0", |
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"-g", "48", |
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"-keyint_min", "48", |
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"-hls_list_size", $this->hls->getHlsListSize(), |
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"-hls_time", $this->hls->getHlsTime(), |
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"-hls_allow_cache", (int)$this->hls->isHlsAllowCache(), |
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"-b:v", $rep->getKiloBitrate() . "k", |
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"-maxrate", intval($rep->getKiloBitrate() * 1.2) . "k", |
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"-hls_segment_type", $this->hls->getHlsSegmentType(), |
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"-hls_fmp4_init_filename", $this->getInitFilename(), |
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"-hls_segment_filename", $this->getSegmentFilename($rep) |
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]; |
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} |
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/** |
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* @param Representation $rep |
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* @param bool $not_last |
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*/ |
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private function getArgs(Representation $rep, bool $not_last): void |
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{ |
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$this->filter = array_merge( |
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$this->filter, |
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$this->initArgs($rep), |
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$this->getAudioBitrate($rep), |
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$this->getBaseURL(), |
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$this->getKeyInfo(), |
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$this->hls->getAdditionalParams(), |
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["-strict", $this->hls->getStrict()], |
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$this->playlistPath($rep, $not_last) |
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); |
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} |
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/** |
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* set segments paths |
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*/ |
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private function segmentPaths() |
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{ |
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if ($this->hls->getTsSubDirectory()) { |
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File::makeDir($this->dirname . "/" . $this->hls->getTsSubDirectory() . "/"); |
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} |
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$base = Utiles::appendSlash($this->hls->getHlsBaseUrl()); |
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$this->seg_sub_dir = Utiles::appendSlash($this->hls->getTsSubDirectory()); |
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$this->seg_filename = $this->dirname . "/" . $this->seg_sub_dir . $this->filename; |
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$this->base_url = $base . $this->seg_sub_dir; |
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} |
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/** |
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* set paths |
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*/ |
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private function setPaths(): void |
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{ |
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$this->dirname = str_replace("\\", "/", $this->hls->getPathInfo(PATHINFO_DIRNAME)); |
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$this->filename = $this->hls->getPathInfo(PATHINFO_FILENAME); |
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$this->segmentPaths(); |
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} |
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/** |
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* @param $media |
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* @return void |
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*/ |
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public function setFilter($media): void |
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{ |
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$this->hls = $media; |
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$this->setPaths(); |
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$reps = $this->hls->getRepresentations(); |
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foreach ($reps as $key => $rep) { |
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if ($key) { |
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$this->filter = array_merge($this->filter, $this->getFormats()); |
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} |
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$this->getArgs($rep, end($reps) !== $rep); |
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} |
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} |
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} |