Location: PHPKode > projects > GetID3 > getid3/module.graphic.jpg.php
<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <hide@address.com>               //
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
/////////////////////////////////////////////////////////////////
// See readme.txt for more details                             //
/////////////////////////////////////////////////////////////////
//                                                             //
// module.graphic.jpg.php                                      //
// module for analyzing JPEG Image files                       //
// dependencies: NONE                                          //
//                                                            ///
/////////////////////////////////////////////////////////////////


class getid3_jpg
{


	function getid3_jpg(&$fd, &$ThisFileInfo) {
		$ThisFileInfo['fileformat']                  = 'jpg';
		$ThisFileInfo['video']['dataformat']         = 'jpg';
		$ThisFileInfo['video']['lossless']           = false;
		$ThisFileInfo['video']['bits_per_sample']    = 24;
		$ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1;

		fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);

		$imageinfo = array();
		list($width, $height, $type) = getid3_lib::GetDataImageSize(fread($fd, $ThisFileInfo['filesize']), $imageinfo);

		if (isset($imageinfo['APP13'])) {
			// http://php.net/iptcparse
			// http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/IPTC.html
	        $iptc_parsed = iptcparse($imageinfo['APP13']);
	        if (is_array($iptc_parsed)) {
		        foreach ($iptc_parsed as $iptc_key_raw => $iptc_values) {
		        	list($iptc_record, $iptc_tagkey) = explode('#', $iptc_key_raw);
		        	$iptc_tagkey = intval(ltrim($iptc_tagkey, '0'));
		        	foreach ($iptc_values as $key => $value) {
		        		@$ThisFileInfo['iptc'][$this->IPTCrecordName($iptc_record)][$this->IPTCrecordTagName($iptc_record, $iptc_tagkey)][] = $value;
		        	}
		        }
		    }
//echo '<pre>'.htmlentities(print_r($iptc_parsed, true)).'</pre>';
		}

		switch ($type) {
			case 2: // JPEG
				$ThisFileInfo['video']['resolution_x'] = $width;
				$ThisFileInfo['video']['resolution_y'] = $height;

				if (version_compare(phpversion(), '4.2.0', '>=')) {

					if (function_exists('exif_read_data')) {

						ob_start();
						$ThisFileInfo['jpg']['exif'] = exif_read_data($ThisFileInfo['filenamepath'], '', true, false);
						$errors = ob_get_contents();
						if ($errors) {
							$ThisFileInfo['warning'][] = strip_tags($errors);
							unset($ThisFileInfo['jpg']['exif']);
						}
						ob_end_clean();

					} else {

						$ThisFileInfo['warning'][] = 'EXIF parsing only available when '.(GETID3_OS_ISWINDOWS ? 'php_exif.dll enabled' : 'compiled with --enable-exif');

					}

				} else {

					$ThisFileInfo['warning'][] = 'EXIF parsing only available in PHP v4.2.0 and higher compiled with --enable-exif (or php_exif.dll enabled for Windows). You are using PHP v'.phpversion();

				}

				return true;
				break;

			default:
				break;
		}

		unset($ThisFileInfo['fileformat']);
		return false;
	}


	function IPTCrecordName($iptc_record) {
		// http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/IPTC.html
		static $IPTCrecordName = array();
		if (empty($IPTCrecordName)) {
			$IPTCrecordName = array(
				1 => 'IPTCEnvelope',
				2 => 'IPTCApplication',
				3 => 'IPTCNewsPhoto',
				7 => 'IPTCPreObjectData',
				8 => 'IPTCObjectData',
				9 => 'IPTCPostObjectData',
			);
		}
		return (isset($IPTCrecordName[$iptc_record]) ? $IPTCrecordName[$iptc_record] : '');
	}


	function IPTCrecordTagName($iptc_record, $iptc_tagkey) {
		// http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/IPTC.html
		static $IPTCrecordTagName = array();
		if (empty($IPTCrecordTagName)) {
			$IPTCrecordTagName = array(
				1 => array( // IPTC EnvelopeRecord Tags
					0   => 'EnvelopeRecordVersion',
					5   => 'Destination',
					20  => 'FileFormat',
					22  => 'FileVersion',
					30  => 'ServiceIdentifier',
					40  => 'EnvelopeNumber',
					50  => 'ProductID',
					60  => 'EnvelopePriority',
					70  => 'DateSent',
					80  => 'TimeSent',
					90  => 'CodedCharacterSet',
					100 => 'UniqueObjectName',
					120 => 'ARMIdentifier',
					122 => 'ARMVersion',
				),
				2 => array( // IPTC ApplicationRecord Tags
					0   => 'ApplicationRecordVersion',
					3   => 'ObjectTypeReference',
					4   => 'ObjectAttributeReference',
					5   => 'ObjectName',
					7   => 'EditStatus',
					8   => 'EditorialUpdate',
					10  => 'Urgency',
					12  => 'SubjectReference',
					15  => 'Category',
					20  => 'SupplementalCategories',
					22  => 'FixtureIdentifier',
					25  => 'Keywords',
					26  => 'ContentLocationCode',
					27  => 'ContentLocationName',
					30  => 'ReleaseDate',
					35  => 'ReleaseTime',
					37  => 'ExpirationDate',
					38  => 'ExpirationTime',
					40  => 'SpecialInstructions',
					42  => 'ActionAdvised',
					45  => 'ReferenceService',
					47  => 'ReferenceDate',
					50  => 'ReferenceNumber',
					55  => 'DateCreated',
					60  => 'TimeCreated',
					62  => 'DigitalCreationDate',
					63  => 'DigitalCreationTime',
					65  => 'OriginatingProgram',
					70  => 'ProgramVersion',
					75  => 'ObjectCycle',
					80  => 'By-line',
					85  => 'By-lineTitle',
					90  => 'City',
					92  => 'Sub-location',
					95  => 'Province-State',
					100 => 'Country-PrimaryLocationCode',
					101 => 'Country-PrimaryLocationName',
					103 => 'OriginalTransmissionReference',
					105 => 'Headline',
					110 => 'Credit',
					115 => 'Source',
					116 => 'CopyrightNotice',
					118 => 'Contact',
					120 => 'Caption-Abstract',
					121 => 'LocalCaption',
					122 => 'Writer-Editor',
					125 => 'RasterizedCaption',
					130 => 'ImageType',
					131 => 'ImageOrientation',
					135 => 'LanguageIdentifier',
					150 => 'AudioType',
					151 => 'AudioSamplingRate',
					152 => 'AudioSamplingResolution',
					153 => 'AudioDuration',
					154 => 'AudioOutcue',
					184 => 'JobID',
					185 => 'MasterDocumentID',
					186 => 'ShortDocumentID',
					187 => 'UniqueDocumentID',
					188 => 'OwnerID',
					200 => 'ObjectPreviewFileFormat',
					201 => 'ObjectPreviewFileVersion',
					202 => 'ObjectPreviewData',
					221 => 'Prefs',
					225 => 'ClassifyState',
					228 => 'SimilarityIndex',
					230 => 'DocumentNotes',
					231 => 'DocumentHistory',
					232 => 'ExifCameraInfo',
				),
				3 => array( // IPTC NewsPhoto Tags
					0   => 'NewsPhotoVersion',
					10  => 'IPTCPictureNumber',
					20  => 'IPTCImageWidth',
					30  => 'IPTCImageHeight',
					40  => 'IPTCPixelWidth',
					50  => 'IPTCPixelHeight',
					55  => 'SupplementalType',
					60  => 'ColorRepresentation',
					64  => 'InterchangeColorSpace',
					65  => 'ColorSequence',
					66  => 'ICC_Profile',
					70  => 'ColorCalibrationMatrix',
					80  => 'LookupTable',
					84  => 'NumIndexEntries',
					85  => 'ColorPalette',
					86  => 'IPTCBitsPerSample',
					90  => 'SampleStructure',
					100 => 'ScanningDirection',
					102 => 'IPTCImageRotation',
					110 => 'DataCompressionMethod',
					120 => 'QuantizationMethod',
					125 => 'EndPoints',
					130 => 'ExcursionTolerance',
					135 => 'BitsPerComponent',
					140 => 'MaximumDensityRange',
					145 => 'GammaCompensatedValue',
				),
				7 => array( // IPTC PreObjectData Tags
					10  => 'SizeMode',
					20  => 'MaxSubfileSize',
					90  => 'ObjectSizeAnnounced',
					95  => 'MaximumObjectSize',
				),
				8 => array( // IPTC ObjectData Tags
					10  => 'SubFile',
				),
				9 => array( // IPTC PostObjectData Tags
					10  => 'ConfirmedObjectSize',
				),
			);

		}
		return (isset($IPTCrecordTagName[$iptc_record][$iptc_tagkey]) ? $IPTCrecordTagName[$iptc_record][$iptc_tagkey] : $iptc_tagkey);
	}

}


?>
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