WIP: tetronomis

composer.json

@@ -1,5 +1,5 @@
 {
-  "name": "cnlpete/image-metadata-parser",
+  "name": "tetronomis/image-metadata-parser",
   "type": "library",
   "description": "An abstraction to Exif, ITPC and XMP",
   "keywords": ["php", "exif", "itpc"],

imageMetadataParser.php

@@ -14,6 +14,8 @@ class ImageMetadataParser {
   protected $sFilename;
 
   protected $aAttributes = array();
+
+  protected $aRaw;
 
   public function __construct($sFilename) {
     $this->sFilename = $sFilename;
@@ -25,10 +27,13 @@ public static function exifAvailable() {
   }
 
   public function parseExif() {
-    $aArr = exif_read_data($this->sFilename, 'IFD0,THUMBNAIL', true);
+    $aArr = @exif_read_data($this->sFilename, 'IFD0,THUMBNAIL', true);
     if ($aArr === false)
       return false;
-
+
+    // Store raw data
+    $this->aRaw = $aArr;
+
     // the date and time the image was taken
     if (isset($aArr['IFD0']['DateTime'])) {
       $iTimestamp = self::timestampFromEXIF($aArr['IFD0']['DateTime']);
@@ -66,11 +71,14 @@ public function parseExif() {
   }
 
   public function parseIPTC() {
-    $aArr = exif_read_data($this->sFilename, 'IDF0', true);
+    $aArr = @exif_read_data($this->sFilename, 'IDF0', true);
     $size = getimagesize($this->sFilename, $info);
     if(!isset($info['APP13']))
       return false;
 
+    // Store raw data
+    $this->aRaw = $aArr;
+
     $iptc = iptcparse($info['APP13']);
 
     if (isset($iptc["2#120"][0])) # caption
@@ -160,6 +168,9 @@ public function hasGPS() {
             isset($this->aAttributes['gps']['GPSLatitude'][0]);
   }
   public function getGPS(&$dLat, &$dLong) {
+    $dLong = $this->extractGPS($this->aAttributes['gps']['GPSLongitude'], $this->aAttributes['gps']['GPSLongitudeRef']);
+    $dLat = $this->extractGPS($this->aAttributes['gps']['GPSLatitude'], $this->aAttributes['gps']['GPSLatitudeRef']);
+    /*
     $latFirst  = explode("/", $this->aAttributes['gps']['GPSLatitude'][0]);
     $latSecond = explode("/", $this->aAttributes['gps']['GPSLatitude'][1]);
     $latThird  = explode("/", $this->aAttributes['gps']['GPSLatitude'][2]);
@@ -179,6 +190,7 @@ public function getGPS(&$dLat, &$dLong) {
     $longThird  = intval($longThird[0]) / intval($longThird[1]);
 
     $dLong = $longFirst + ($longSecond*60 + $longThird) / 3600;
+    */
   }
   public function getGPSArray() {
     $dLat = 0.0; $dLong = 0.0;
@@ -190,19 +202,28 @@ public function hasOrientation() {
     return isset($this->aAttributes['orientation']);
   }
   public function getOrientation() {
-    switch($this->aAttributes['orientation']) {
-      case 3:
-        return 180;
-        break;
-      case 6:
-        return -90;
-        break;
-      case 8:
-        return 90;
-        break;
-      default:
-        return 0;
-    }
+    return $this->aAttributes['orientation'];
+  }
+  public function getRaw() {
+    return $this->aRaw;
   }
+
+  private function extractGPS($exifCoord, $hemi) {
+    $degrees = count($exifCoord) > 0 ? $this->gps2Num($exifCoord[0]) : 0;
+    $minutes = count($exifCoord) > 1 ? $this->gps2Num($exifCoord[1]) : 0;
+    $seconds = count($exifCoord) > 2 ? $this->gps2Num($exifCoord[2]) : 0;
+    $flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
+    return $flip * ($degrees + $minutes / 60 + $seconds / 3600);
+  }
+
+  private function gps2Num($coordPart) {
+    $parts = explode('/', $coordPart);
+    if (count($parts) <= 0)
+        return 0;
 
+    if (count($parts) == 1)
+        return $parts[0];
+
+    return floatval($parts[0]) / floatval($parts[1]);
+}
 }