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<?php |
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namespace Jackal\Giffhanger\FFMpeg\ext\Filters; |
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use FFMpeg\Filters\Video\VideoFilterInterface; |
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use FFMpeg\Format\VideoInterface; |
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use FFMpeg\Media\Video; |
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class CropCenterFilter implements VideoFilterInterface |
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{ |
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protected $priority; |
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protected $cropRatio; |
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public function __construct($cropRatio, $priority = 0) |
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{ |
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$this->priority = $priority; |
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$this->cropRatio = $cropRatio; |
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} |
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/** |
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* Returns the priority of the filter. |
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* |
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* @return integer |
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*/ |
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public function getPriority() |
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{ |
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return $this->priority; |
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} |
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/** |
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* Applies the filter on the the Video media given an format. |
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* |
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* @param Video $video |
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* @param VideoInterface $format |
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* |
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* @return array An array of arguments |
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*/ |
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public function apply(Video $video, VideoInterface $format) |
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{ |
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$videoWidth = 0; |
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$videoHeight = 0; |
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$videoRatio = 0; |
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foreach ($video->getStreams()->videos() as $stream) { |
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if ($stream->has('width') && $stream->has('height')) { |
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$videoWidth = $stream->get('width'); |
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$videoHeight = $stream->get('height'); |
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$videoRatio = $videoWidth / $videoHeight; |
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break; |
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} |
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} |
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if ($this->cropRatio > $videoRatio) { |
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$cropWidth = $videoWidth; |
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$cropHeight = round($videoWidth / $this->cropRatio); |
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} else { |
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$cropHeight = $videoHeight; |
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$cropWidth = round($videoHeight * $this->cropRatio); |
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} |
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$cropX = round(($videoWidth - $cropWidth) / 2); |
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$cropY = round(($videoHeight - $cropHeight) / 2); |
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foreach ($video->getStreams()->videos() as $stream) { |
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if ($stream->has('width') && $stream->has('height')) { |
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$stream->set('width', $cropWidth); |
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$stream->set('height', $cropHeight); |
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} |
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} |
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return [ |
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'-filter:v', |
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'crop=' . |
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$cropWidth . ':' . $cropHeight . ':' . $cropX . ':' . $cropY, |
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]; |
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} |
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} |
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lucajackal85 /
Giffhanger
