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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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class Segments implements DumpableInterface, \Iterator, \ArrayAccess |
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{ |
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private $segments = []; |
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private $m3u8; |
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private $position = 0; |
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public function __construct(M3u8 $m3u8) |
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{ |
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$this->m3u8 = $m3u8; |
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} |
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public function rewind() |
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{ |
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$this->position = 0; |
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} |
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public function current() |
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{ |
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return $this->segments[$this->position]; |
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} |
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public function key() |
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{ |
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return $this->position; |
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} |
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public function next() |
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{ |
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++$this->position; |
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} |
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public function valid() |
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{ |
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return isset($this->segments[$this->position]); |
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} |
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public function offsetSet($offset, $value) |
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{ |
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if (!is_object($value) || !$value instanceof Segment) { |
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throw new \InvalidArgumentException('Expected $value of class Chrisyue\PhpM3u8\Segment'); |
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} |
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if (is_null($offset)) { |
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$this->add($value); |
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return; |
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} |
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$this->segments[$offset] = $value; |
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} |
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/** |
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* @return Chrisyue\PhpM3u8\Segment |
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*/ |
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public function offsetGet($offset) |
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{ |
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return $this->segments[$offset]; |
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} |
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/** |
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* @return bool |
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*/ |
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public function offsetExists($offset) |
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{ |
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return isset($this->segments[$offset]); |
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} |
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public function offsetUnset($offset) |
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{ |
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unset($this->segments[$offset]); |
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} |
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public function add(Segment $segment) |
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{ |
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$this->segments[] = $segment; |
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} |
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/** |
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* @return int|float |
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*/ |
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public function getDuration() |
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{ |
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$duration = 0; |
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foreach ($this->segments as $segment) { |
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$duration += $segment->getDuration(); |
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} |
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return $duration; |
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} |
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/** |
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* @return Chrisyue\PhpM3u8\Segment |
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*/ |
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public function getFirst() |
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{ |
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$first = reset($this->segments); |
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if (false !== $first) { |
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return $first; |
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} |
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} |
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/** |
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* @return int |
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*/ |
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public function count() |
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{ |
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return count($this->segments); |
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} |
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public function readLines(array &$lines) |
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{ |
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$mediaSequence = (int) $this->m3u8->getMediaSequence(); |
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$discontinuitySequence = (int) $this->m3u8->getDiscontinuitySequence(); |
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while (true) { |
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$segment = new Segment($this->m3u8->getVersion()); |
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$segment->readLines($lines); |
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if ($segment->isEmpty()) { |
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return; |
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} |
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$segment->setMediaSequence($mediaSequence++); |
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$segment->setDiscontinuitySequence($discontinuitySequence); |
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if ($segment->isDiscontinuity()) { |
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$segment->setDiscontinuitySequence(++$discontinuitySequence); |
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} |
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$this->segments[] = $segment; |
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} |
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} |
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public function dump() |
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{ |
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$lines = array_map(function (Segment $segment) { |
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return $segment->dump(); |
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}, $this->segments); |
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return implode("\n", $lines); |
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} |
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} |
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chrisyue /
php-m3u8
