port of reds geotag feature

include/photos.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * @file include/photos.php
+ * @brief Functions related to photo handling.
+ */
+
+function getGps($exifCoord, $hemi) {
+	$degrees = count($exifCoord) > 0 ? gps2Num($exifCoord[0]) : 0;
+	$minutes = count($exifCoord) > 1 ? gps2Num($exifCoord[1]) : 0;
+	$seconds = count($exifCoord) > 2 ? gps2Num($exifCoord[2]) : 0;
+
+	$flip = ($hemi == 'W' or $hemi == 'S') ? -1 : 1;
+
+	return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
+}
+
+function gps2Num($coordPart) {
+	$parts = explode('/', $coordPart);
+
+	if (count($parts) <= 0)
+		return 0;
+
+	if (count($parts) == 1)
+		return $parts[0];
+
+	return floatval($parts[0]) / floatval($parts[1]);
+}