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<?php |
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/** |
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* (c) Kitodo. Key to digital objects e.V. <[email protected]> |
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* |
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* This file is part of the Kitodo and TYPO3 projects. |
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* |
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* @license GNU General Public License version 3 or later. |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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*/ |
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namespace Kitodo\Dlf\Format; |
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/** |
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* Process AudioMD and VideoMD metadata. |
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* |
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* The technical reason for handling both formats here is that this makes it slightly more |
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* straightforward to extract `duration` as either video duration or audio duration. |
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* |
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* @author Kajetan Dvoracek <[email protected]> |
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* @package TYPO3 |
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* @subpackage dlf |
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* @access public |
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*/ |
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class AudioVideoMD implements \Kitodo\Dlf\Common\MetadataInterface |
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{ |
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/** |
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* Extract some essential AudioMD/VideoMD metadata. |
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* |
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* @access public |
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* |
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* @param \SimpleXMLElement $xml: The XML to extract the metadata from |
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* @param array &$metadata: The metadata array to fill |
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* |
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* @return void |
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*/ |
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public function extractMetadata(\SimpleXMLElement $xml, array &$metadata) |
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{ |
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$xml->registerXPathNamespace('audiomd', 'http://www.loc.gov/audioMD/'); |
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$xml->registerXPathNamespace('videomd', 'http://www.loc.gov/videoMD/'); |
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if (!empty($audioDuration = (string) $xml->xpath('./audiomd:audioInfo/audiomd:duration')[0])) { |
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$metadata['audio_duration'] = [$audioDuration]; |
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} |
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if (!empty($videoDuration = (string) $xml->xpath('./videomd:videoInfo/videomd:duration')[0])) { |
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$metadata['video_duration'] = [$videoDuration]; |
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} |
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$metadata['duration'] = $metadata['video_duration'] ?: $metadata['audio_duration'] ?: []; |
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if (!empty($videoFrameRate = (string) $xml->xpath('./videomd:fileData/videomd:frameRate[@mode="Fixed"]')[0])) { |
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$metadata['video_frame_rate'] = [$videoFrameRate]; |
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} |
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} |
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} |
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kitodo /
kitodo-presentation
