Add imagemagick support

Adds additional support for imagemagick if GD doesn't support a file
type and extends the files displayed as thumbnails to all images and
pdf files.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 37 insertions, 0 deletions

diff --git a/application/libraries/Exif.php b/application/libraries/Exif.php
new file mode 100644
index 000000000..27dd11a65
--- /dev/null
+++ b/application/libraries/Exif.php
@@ -0,0 +1,37 @@
+<?php
+/*
+ * Copyright 2014-2015 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under AGPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+namespace libraries;
+
+class Exif {
+	static public function get_exif($file)
+	{
+		// TODO: support more types (identify or exiftool? might be slow :( )
+		try {
+			$type = getimagesize($file)[2];
+		} catch (\ErrorException $e) {
+			return false;
+		}
+		switch ($type) {
+		case IMAGETYPE_JPEG:
+			getimagesize($file, $info);
+			if (isset($info["APP1"]) && strpos($info["APP1"], "http://ns.adobe.com/xap/1.0/") === 0) {
+				// ignore XMP data which makes exif_read_data throw a warning
+				// http://stackoverflow.com/a/8864064
+				return false;
+			}
+			return @exif_read_data($file);
+			break;
+		default:
+		}
+
+		return false;
+	}
+
+}