129 lines
4.8 KiB
PHP
129 lines
4.8 KiB
PHP
<?php
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declare(strict_types=1);
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namespace OCA\Memories\Db;
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use OCA\Memories\Exif;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\Files\File;
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use OCP\IDBConnection;
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class LivePhoto
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{
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protected IDBConnection $connection;
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public function __construct(IDBConnection $connection)
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{
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$this->connection = $connection;
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}
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/** Check if a given Exif data is the video part of a live photo */
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public function isVideoPart(array &$exif)
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{
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return \array_key_exists('MIMEType', $exif)
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&& 'video/quicktime' === $exif['MIMEType']
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&& \array_key_exists('ContentIdentifier', $exif);
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}
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/** Get liveid from photo part */
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public function getLivePhotoId(File &$file, array &$exif)
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{
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// Apple JPEG (MOV has ContentIdentifier)
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if (\array_key_exists('MediaGroupUUID', $exif)) {
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return $exif['MediaGroupUUID'];
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}
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// Samsung JPEG
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if (\array_key_exists('EmbeddedVideoType', $exif) && str_contains($exif['EmbeddedVideoType'], 'MotionPhoto')) {
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return 'self__embeddedvideo';
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}
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// Google JPEG and Samsung HEIC (Apple?)
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if (\array_key_exists('MotionPhoto', $exif)) {
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if ('image/jpeg' === $exif['MIMEType']) {
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// Google Motion Photo JPEG
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// We need to read the DirectoryItemLength key to get the length of the video
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// These keys are duplicate, one for the image and one for the video
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// With exiftool -G4, we get the following:
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//
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// "Unknown:DirectoryItemSemantic": "Primary"
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// "Unknown:DirectoryItemLength": 0
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// "Copy1:DirectoryItemSemantic": "MotionPhoto"
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// "Copy1:DirectoryItemLength": 3011435 // <-- this is the length of the video
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//
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// The video is then located at the end of the file, so we can get the offset.
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// Match each DirectoryItemSemantic to find MotionPhoto, then get the length.
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$path = $file->getStorage()->getLocalFile($file->getInternalPath());
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$extExif = Exif::getExifWithDuplicates($path);
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foreach ($extExif as $key => $value) {
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if (str_ends_with($key, ':DirectoryItemSemantic')) {
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if ('MotionPhoto' === $value) {
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$videoLength = $extExif[str_replace('Semantic', 'Length', $key)];
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if (\is_int($videoLength) && $videoLength > 0) {
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$videoOffset = $file->getSize() - $videoLength;
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return 'self__traileroffset='.((string) $videoOffset);
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}
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}
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}
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}
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// Fallback: video should hopefully be in trailer
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return 'self__trailer';
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}
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if ('image/heic' === $exif['MIMEType']) {
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// Samsung HEIC -- no way to get this out yet
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return '';
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}
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}
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return '';
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}
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public function processVideoPart(File &$file, array &$exif)
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{
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$fileId = $file->getId();
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$mtime = $file->getMTime();
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$liveid = $exif['ContentIdentifier'];
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if (empty($liveid)) {
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return;
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}
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$query = $this->connection->getQueryBuilder();
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$query->select('fileid')
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->from('memories_livephoto')
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->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)))
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;
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$cursor = $query->executeQuery();
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$prevRow = $cursor->fetch();
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$cursor->closeCursor();
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if ($prevRow) {
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// Update existing row
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$query->update('memories_livephoto')
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->set('liveid', $query->createNamedParameter($liveid, IQueryBuilder::PARAM_STR))
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->set('mtime', $query->createNamedParameter($mtime, IQueryBuilder::PARAM_INT))
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->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT)))
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;
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$query->executeStatement();
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} else {
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// Try to create new row
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try {
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$query->insert('memories_livephoto')
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->values([
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'liveid' => $query->createNamedParameter($liveid, IQueryBuilder::PARAM_STR),
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'mtime' => $query->createNamedParameter($mtime, IQueryBuilder::PARAM_INT),
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'fileid' => $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT),
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])
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;
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$query->executeStatement();
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} catch (\Exception $ex) {
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error_log('Failed to create memories_livephoto record: '.$ex->getMessage());
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}
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}
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}
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}
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