From e2509b16570e56ca4a11fffb024459d739d8aa2a Mon Sep 17 00:00:00 2001
From: Quentin Ligier <quentin.ligier@bluewin.ch>
Date: Sun, 17 Apr 2016 21:59:50 +0200
Subject: [PATCH] Import GPS coordinates from EXIF

---
 php/Modules/Photo.php            |  7 +++++--
 php/helpers/getGPSCoordinate.php | 28 ++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 2 deletions(-)
 create mode 100644 php/helpers/getGPSCoordinate.php

diff --git a/php/Modules/Photo.php b/php/Modules/Photo.php
index bb4f5e0..52dead3 100755
--- a/php/Modules/Photo.php
+++ b/php/Modules/Photo.php
@@ -819,8 +819,11 @@ final class Photo {
 			if (!empty($exif['UndefinedTag:0xA434'])) $return['lens'] = trim($exif['UndefinedTag:0xA434']);
 
 
-			$return['latitude']    = '';
-			$return['longitude']   = '';
+			// Deal with GPS coordinates
+			if (!empty($exif['GPSLatitude']) && !empty($exif['GPSLatitudeRef']))
+				$return['latitude'] = getGPSCoordinate($exif['GPSLatitude'], $exif['GPSLatitudeRef']);
+			if (!empty($exif['GPSLongitude']) && !empty($exif['GPSLongitudeRef']))
+				$return['longitude'] = getGPSCoordinate($exif['GPSLongitude'], $exif['GPSLongitudeRef']);
 
 		}
 
diff --git a/php/helpers/getGPSCoordinate.php b/php/helpers/getGPSCoordinate.php
new file mode 100644
index 0000000..391c777
--- /dev/null
+++ b/php/helpers/getGPSCoordinate.php
@@ -0,0 +1,28 @@
+<?php
+
+/**
+ * Returns the normalized coordinate from EXIF array.
+ * @return string Normalized coordinate as float number (degrees).
+ */
+function getGPSCoordinate($coordinate, $ref) {
+	$degrees = count($coordinate) > 0 ? gps2Num($coordinate[0]) : 0;
+    $minutes = count($coordinate) > 1 ? gps2Num($coordinate[1]) : 0;
+    $seconds = count($coordinate) > 2 ? gps2Num($coordinate[2]) : 0;
+
+    $flip = ($ref == 'W' || $ref == 'S') ? -1 : 1;
+
+    return $flip * ($degrees + (float)$minutes / 60 + (float)$seconds / 3600);
+}
+
+function formattedToFloatGPS($coordinate) {
+	$parts = explode('/', $coordinate, 2);
+
+    if (count($parts) <= 0)
+        return 0;
+    if (count($parts) == 1)
+        return $parts[0];
+
+    return (float)$parts[0] / $parts[1];
+}
+
+?>
\ No newline at end of file