diff -r 000000000000 -r 6474c204b198 image/src/ImageOps.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/image/src/ImageOps.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_IMAGELIB_IMAGEOPS_H_
+#define MOZILLA_IMAGELIB_IMAGEOPS_H_
+
+#include "nsCOMPtr.h"
+
+class imgIContainer;
+struct nsIntRect;
+
+namespace mozilla {
+namespace image {
+
+class Image;
+class Orientation;
+
+class ImageOps
+{
+public:
+  /**
+   * Creates a version of an existing image which does not animate and is frozen
+   * at the first frame.
+   *
+   * @param aImage         The existing image.
+   */
+  static already_AddRefed<Image> Freeze(Image* aImage);
+  static already_AddRefed<imgIContainer> Freeze(imgIContainer* aImage);
+
+  /**
+   * Creates a clipped version of an existing image. Animation is unaffected.
+   *
+   * @param aImage         The existing image.
+   * @param aClip          The rectangle to clip the image against.
+   */
+  static already_AddRefed<Image> Clip(Image* aImage, nsIntRect aClip);
+  static already_AddRefed<imgIContainer> Clip(imgIContainer* aImage, nsIntRect aClip);
+
+  /**
+   * Creates a version of an existing image which is rotated and/or flipped to
+   * the specified orientation.
+   *
+   * @param aImage         The existing image.
+   * @param aOrientation   The desired orientation.
+   */
+  static already_AddRefed<Image> Orient(Image* aImage, Orientation aOrientation);
+  static already_AddRefed<imgIContainer> Orient(imgIContainer* aImage, Orientation aOrientation);
+
+private:
+  // This is a static utility class, so disallow instantiation.
+  virtual ~ImageOps() = 0;
+};
+
+} // namespace image
+} // namespace mozilla
+
+#endif // MOZILLA_IMAGELIB_IMAGEOPS_H_