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<?php |
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declare(strict_types=1); |
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namespace Soluble\MediaTools\Video\Info; |
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use Soluble\MediaTools\Video\Exception\InvalidStreamMetadataException; |
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use Soluble\MediaTools\Video\Exception\NoStreamException; |
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final class AudioStreamCollection implements AudioStreamCollectionInterface |
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{ |
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/** @var array<int, array> */ |
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private $streamsMetadata; |
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/** @var array<int, AudioStreamInterface> */ |
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private $streams; |
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/** |
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* @param array<int, array> $audioStreamsMetadata |
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* |
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* @throws InvalidStreamMetadataException |
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*/ |
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public function __construct(array $audioStreamsMetadata) |
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{ |
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$this->streamsMetadata = $audioStreamsMetadata; |
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$this->loadStreams(); |
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} |
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/** |
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* @throws NoStreamException |
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*/ |
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public function getFirst(): AudioStreamInterface |
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{ |
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if ($this->count() === 0) { |
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throw new NoStreamException('Unable to get video first stream, none exists'); |
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} |
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return new AudioStream($this->streamsMetadata[0]); |
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} |
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public function count(): int |
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{ |
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return count($this->streamsMetadata); |
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} |
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/** |
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* @return \ArrayIterator<int, AudioStreamInterface> |
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*/ |
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public function getIterator(): \ArrayIterator |
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{ |
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return new \ArrayIterator($this->streams); |
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} |
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/** |
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* @throws InvalidStreamMetadataException |
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*/ |
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private function loadStreams(): void |
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{ |
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$this->streams = []; |
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foreach ($this->streamsMetadata as $idx => $metadata) { |
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if (!is_array($metadata)) { |
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throw new InvalidStreamMetadataException(sprintf( |
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'Invalid or unsupported metadata stream received %s', |
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(string) json_encode($metadata) |
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)); |
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} |
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$this->streams[] = new AudioStream($metadata); |
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} |
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} |
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} |
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soluble-io /
soluble-mediatools
