1 files changed, 48 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/data/Exif.java b/src/com/android/gallery3d/data/Exif.java
new file mode 100644
index 000000000..950e7de18
--- /dev/null
+++ b/src/com/android/gallery3d/data/Exif.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.gallery3d.data;
+
+import android.util.Log;
+
+import com.android.gallery3d.exif.ExifInterface;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class Exif {
+    private static final String TAG = "CameraExif";
+
+    // Returns the degrees in clockwise. Values are 0, 90, 180, or 270.
+    public static int getOrientation(InputStream is) {
+        if (is == null) {
+            return 0;
+        }
+        ExifInterface exif = new ExifInterface();
+        try {
+            exif.readExif(is);
+            Integer val = exif.getTagIntValue(ExifInterface.TAG_ORIENTATION);
+            if (val == null) {
+                return 0;
+            } else {
+                return ExifInterface.getRotationForOrientationValue(val.shortValue());
+            }
+        } catch (IOException e) {
+            Log.w(TAG, "Failed to read EXIF orientation", e);
+            return 0;
+        }
+    }
+}