74f16767e7
Hope I did this in an ok fashion. svn merge --re-integrate was giving me issues so I just essentially over-wrote my working copy with the version at img_metadata.
140 lines
3.1 KiB
PHP
140 lines
3.1 KiB
PHP
<?php
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/**
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* Handler for GIF images.
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*
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* @file
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* @ingroup Media
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*/
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/**
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* Handler for GIF images.
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*
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* @ingroup Media
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*/
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class GIFHandler extends BitmapHandler {
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const BROKEN_FILE = '0'; // value to store in img_metadata if error extracting metadata.
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function getMetadata( $image, $filename ) {
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try {
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$parsedGIFMetadata = BitmapMetadataHandler::GIF( $filename );
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} catch( Exception $e ) {
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// Broken file?
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wfDebug( __METHOD__ . ': ' . $e->getMessage() . "\n" );
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return self::BROKEN_FILE;
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}
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return serialize($parsedGIFMetadata);
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}
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function formatMetadata( $image ) {
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$meta = $image->getMetadata();
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if ( !$meta ) {
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return false;
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}
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$meta = unserialize( $meta );
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if ( !isset( $meta['metadata'] ) || count( $meta['metadata'] ) <= 1 ) {
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return false;
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}
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if ( isset( $meta['metadata']['_MW_GIF_VERSION'] ) ) {
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unset( $meta['metadata']['_MW_GIF_VERSION'] );
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}
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return $this->formatMetadataHelper( $meta['metadata'] );
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}
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/**
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* @param $image File
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* @param $width
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* @param $height
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* @return
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*/
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function getImageArea( $image, $width, $height ) {
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$ser = $image->getMetadata();
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if ( $ser ) {
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$metadata = unserialize( $ser );
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return $width * $height * $metadata['frameCount'];
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} else {
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return $width * $height;
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}
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}
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/**
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* @param $image File
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* @return bool
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*/
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function isAnimatedImage( $image ) {
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$ser = $image->getMetadata();
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if ( $ser ) {
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$metadata = unserialize($ser);
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if( $metadata['frameCount'] > 1 ) {
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return true;
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}
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}
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return false;
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}
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function getMetadataType( $image ) {
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return 'parsed-gif';
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}
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function isMetadataValid( $image, $metadata ) {
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if ( $metadata === self::BROKEN_FILE ) {
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// Do not repetitivly regenerate metadata on broken file.
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return self::METADATA_GOOD;
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}
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wfSuppressWarnings();
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$data = unserialize( $metadata );
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wfRestoreWarnings();
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if ( !$data || !is_array( $data ) ) {
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wfDebug(__METHOD__ . ' invalid GIF metadata' );
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return self::METADATA_BAD;
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}
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if ( !isset( $data['metadata']['_MW_GIF_VERSION'] )
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|| $data['metadata']['_MW_GIF_VERSION'] != GIFMetadataExtractor::VERSION ) {
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wfDebug(__METHOD__ . ' old but compatible GIF metadata' );
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return self::METADATA_COMPATIBLE;
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}
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return self::METADATA_GOOD;
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}
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/**
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* @param $image File
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* @return string
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*/
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function getLongDesc( $image ) {
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global $wgLang;
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$original = parent::getLongDesc( $image );
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wfSuppressWarnings();
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$metadata = unserialize($image->getMetadata());
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wfRestoreWarnings();
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if (!$metadata || $metadata['frameCount'] <= 1) {
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return $original;
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}
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/* Preserve original image info string, but strip the last char ')' so we can add even more */
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$info = array();
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$info[] = $original;
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if ( $metadata['looped'] ) {
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$info[] = wfMsgExt( 'file-info-gif-looped', 'parseinline' );
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}
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if ( $metadata['frameCount'] > 1 ) {
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$info[] = wfMsgExt( 'file-info-gif-frames', 'parseinline', $metadata['frameCount'] );
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}
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if ( $metadata['duration'] ) {
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$info[] = $wgLang->formatTimePeriod( $metadata['duration'] );
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}
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return $wgLang->commaList( $info );
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}
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}
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