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<?php |
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/* |
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* This file is part of the PhpM3u8 package. |
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* |
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* (c) Chrisyue <http://chrisyue.com/> |
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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 Chrisyue\PhpM3u8; |
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use Chrisyue\PhpM3u8\Loader\LoaderInterface; |
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use Chrisyue\PhpM3u8\M3u8\M3u8; |
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use Chrisyue\PhpM3u8\M3u8\MediaSegment; |
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use Chrisyue\PhpM3u8\M3u8\Playlist; |
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class Parser |
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{ |
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private $loader; |
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public function setLoader(LoaderInterface $loader) |
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{ |
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$this->loader = $loader; |
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return $this; |
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} |
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public function parseFromUri($uri) |
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{ |
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if (null === $this->loader) { |
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throw new \BadMethodCallException('You should set an m3u8 loader first'); |
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} |
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return $this->parse($this->loader->load($uri)); |
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} |
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public function parse($content) |
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{ |
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$tokens = $this->lex($content); |
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if (!isset($tokens['version'])) { |
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$tokens['version'] = 3; |
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} |
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if (!isset($tokens['mediaSequence'])) { |
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$tokens['mediaSequence'] = 0; |
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} |
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if (!isset($tokens['discontinuitySequence'])) { |
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$tokens['discontinuitySequence'] = null; |
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} |
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if (!isset($tokens['isEndless'])) { |
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$tokens['isEndless'] = true; |
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} |
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$mediaSegments = array(); |
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foreach ($tokens['playlist'] as $index => $row) { |
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$mediaSegment = new MediaSegment( |
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$row['uri'], |
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$row['duration'], |
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$tokens['mediaSequence'] + $index, |
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!empty($row['isDiscontinuity']), |
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empty($row['title']) ? null : $row['title'], |
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empty($row['byteRange']) ? null : $row['byteRange'] |
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); |
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$mediaSegments[] = $mediaSegment; |
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} |
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$playlist = new Playlist($mediaSegments, $tokens['isEndless']); |
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return new M3u8($playlist, $tokens['version'], $tokens['targetDuration'], $tokens['discontinuitySequence']); |
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} |
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private function lex($content) |
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{ |
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$tokens = array(); |
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$mediaSequence = 0; |
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$lines = explode("\n", $content); |
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foreach ($lines as $line) { |
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$line = trim($line); |
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if (preg_match('/^#EXT-X-VERSION:(\d+)/', $line, $matches)) { |
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$tokens['version'] = $matches[1]; |
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continue; |
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} |
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if (preg_match('/^#EXT-X-TARGETDURATION:(\d+)/', $line, $matches)) { |
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$tokens['targetDuration'] = (int) $matches[1]; |
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continue; |
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} |
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if (preg_match('/^#EXT-X-MEDIA-SEQUENCE:(\d+)/', $line, $matches)) { |
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$tokens['mediaSequence'] = (int) $matches[1]; |
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continue; |
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} |
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if (preg_match('/^#EXT-X-DISCONTINUITY-SEQUENCE:(\d+)/', $line, $matches)) { |
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$tokens['discontinuitySequence'] = (int) $matches[1]; |
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continue; |
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} |
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if (preg_match('/^#EXT-X-DISCONTINUITY/', $line)) { |
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$tokens['playlist'][$mediaSequence]['isDiscontinuity'] = true; |
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continue; |
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} |
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if (preg_match('/^#EXTINF:(.+),(.*)$/', $line, $matches)) { |
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$tokens['playlist'][$mediaSequence]['duration'] = $matches[1]; |
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if (isset($matches[2])) { |
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$tokens['playlist'][$mediaSequence]['title'] = $matches[2]; |
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} |
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continue; |
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} |
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if (preg_match('/^#EXT-X-BYTERANGE:(\d+)(@(\d+))?$/', $line, $matches)) { |
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$byteRange = new \SplFixedArray(2); |
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$byteRange[0] = (int) $matches[1]; |
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if (!empty($matches[3])) { |
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$byteRange[1] = (int) $matches[3]; |
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} |
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$tokens['playlist'][$mediaSequence]['byteRange'] = $byteRange; |
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continue; |
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} |
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if (preg_match('/^[^#]+/', $line, $matches)) { |
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$tokens['playlist'][$mediaSequence]['uri'] = $matches[0]; |
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++$mediaSequence; |
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continue; |
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} |
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if ('#EXT-X-ENDLIST' === $line) { |
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$tokens['isEndless'] = false; |
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break; |
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} |
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} |
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return $tokens; |
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} |
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} |
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chrisyue /
php-m3u8
