Modification of EXIF extraction

php/Modules/Photo.php

@@ -307,7 +307,7 @@ final class Photo {
 		$newUrl2x  = LYCHEE_UPLOADS_THUMB . $photoName[0] . '@2x.jpeg';
 
 		// Create thumbnails with Imagick
-		if(extension_loaded('imagick')&&Settings::get()['imagick']==='1') {
+		if(Settings::hasImagick()) {
 
 			// Read image
 			$thumb = new Imagick();
@@ -727,48 +727,61 @@ final class Photo {
 		$info      = getimagesize($url, $iptcArray);
 
 		// General information
-		$return['type']   = $info['mime'];
+		$return['type']        = $info['mime'];
-		$return['width']  = $info[0];
+		$return['width']       = $info[0];
-		$return['height'] = $info[1];
+		$return['height']      = $info[1];
+		$return['title']       = '';
+		$return['description'] = '';
+		$return['orientation'] = '';
+		$return['iso']         = '';
+		$return['aperture']    = '';
+		$return['make']        = '';
+		$return['model']       = '';
+		$return['shutter']     = '';
+		$return['focal']       = '';
+		$return['takestamp']   = 0;
+		$return['lens']        = '';
+		$return['tags']        = array();
+		$return['position']    = '';
+		$return['latitude']    = '';
+		$return['longitude']   = '';
+		$return['altitude']    = '';
 
 		// Size
 		$size = filesize($url)/1024;
 		if ($size>=1024) $return['size'] = round($size/1024, 1) . ' MB';
 		else $return['size'] = round($size, 1) . ' KB';
 
-		// IPTC Metadata Fallback
-		$return['title']       = '';
-		$return['description'] = '';
-
 		// IPTC Metadata
+		// See https://www.iptc.org/std/IIM/4.2/specification/IIMV4.2.pdf for mapping
 		if(isset($iptcArray['APP13'])) {
 
 			$iptcInfo = iptcparse($iptcArray['APP13']);
 			if (is_array($iptcInfo)) {
 
-				$temp = @$iptcInfo['2#105'][0];
+				// Title
-				if (isset($temp)&&strlen($temp)>0) $return['title'] = $temp;
+				if (!empty($iptcInfo['2#105'][0])) $return['title'] = $iptcInfo['2#105'][0];
+				else if (!empty($iptcInfo['2#005'][0])) $return['title'] = $iptcInfo['2#005'][0];
+
+				// Description
+				if (!empty($iptcInfo['2#120'][0])) $return['description'] = $iptcInfo['2#120'][0];
 
-				$temp = @$iptcInfo['2#120'][0];
+				// Tags
-				if (isset($temp)&&strlen($temp)>0) $return['description'] = $temp;
+				if (!empty($iptcInfo['2#025'])) $return['tags'] = $iptcInfo['2#025'];
 
-				$temp = @$iptcInfo['2#005'][0];
+				// Position
-				if (isset($temp)&&strlen($temp)>0&&$return['title']==='') $return['title'] = $temp;
+				$fields = array();
+				if (!empty($iptcInfo['2#090'])) $fields[] = trim($iptcInfo['2#090']);
+				if (!empty($iptcInfo['2#092'])) $fields[] = trim($iptcInfo['2#092']);
+				if (!empty($iptcInfo['2#095'])) $fields[] = trim($iptcInfo['2#095']);
+				if (!empty($iptcInfo['2#101'])) $fields[] = trim($iptcInfo['2#101']);
+
+				if (!empty($fields)) $return['position'] = implode(', ', $fields);
 
 			}
 
 		}
 
-		// EXIF Metadata Fallback
-		$return['orientation'] = '';
-		$return['iso']         = '';
-		$return['aperture']    = '';
-		$return['make']        = '';
-		$return['model']       = '';
-		$return['shutter']     = '';
-		$return['focal']       = '';
-		$return['takestamp']   = 0;
-
 		// Read EXIF
 		if ($info['mime']=='image/jpeg') $exif = @exif_read_data($url, 'EXIF', 0);
 		else $exif = false;
@@ -779,24 +792,19 @@ final class Photo {
 			if (isset($exif['Orientation'])) $return['orientation'] = $exif['Orientation'];
 			else if (isset($exif['IFD0']['Orientation'])) $return['orientation'] = $exif['IFD0']['Orientation'];
 
-			$temp = @$exif['ISOSpeedRatings'];
+			if (!empty($exif['ISOSpeedRatings'])) $return['iso'] = $exif['ISOSpeedRatings'];
-			if (isset($temp)) $return['iso'] = $temp;
 
-			$temp = @$exif['COMPUTED']['ApertureFNumber'];
+			if (!empty($exif['COMPUTED']['ApertureFNumber'])) $return['aperture'] = $exif['COMPUTED']['ApertureFNumber'];
-			if (isset($temp)) $return['aperture'] = $temp;
 
-			$temp = @$exif['Make'];
+			if (!empty($exif['Make'])) $return['make'] = trim($exif['Make']);
-			if (isset($temp)) $return['make'] = trim($temp);
 
-			$temp = @$exif['Model'];
+			if (!empty($exif['Model'])) $return['model'] = trim($exif['Model']);
-			if (isset($temp)) $return['model'] = trim($temp);
 
-			$temp = @$exif['ExposureTime'];
+			if (!empty($exif['ExposureTime'])) $return['shutter'] = $exif['ExposureTime'] . ' s';
-			if (isset($temp)) $return['shutter'] = $exif['ExposureTime'] . ' s';
 
 			$temp = @$exif['FocalLength'];
 			if (isset($temp)) {
-				if (strpos($temp, '/')!==FALSE) {
+				if (strpos($temp, '/')!==false) {
 					$temp = explode('/', $temp, 2);
 					$temp = $temp[0] / $temp[1];
 					$temp = round($temp, 1);
@@ -805,8 +813,14 @@ final class Photo {
 				$return['focal'] = $temp . ' mm';
 			}
 
-			$temp = @$exif['DateTimeOriginal'];
+			if (!empty($exif['DateTimeOriginal'])) $return['takestamp'] = strtotime($exif['DateTimeOriginal']);
-			if (isset($temp)) $return['takestamp'] = strtotime($temp);
+
+			// Lens field from Lightroom
+			if (!empty($exif['UndefinedTag:0xA434'])) $return['lens'] = trim($exif['UndefinedTag:0xA434']);
+
+
+			$return['latitude']    = '';
+			$return['longitude']   = '';
 
 		}
 

php/Modules/Settings.php

@@ -221,6 +221,13 @@ final class Settings {
 
 	}
 
+	/**
+	 * @return array Returns the settings of Lychee.
+	 */
+	public static function hasImagick() {
+		return (bool)(extension_loaded('imagick')&&self::get()['imagick']==='1');
+	}
+
 }
 
 ?>