1 files changed, 55 insertions, 0 deletions
diff --git a/image/AnimationParams.h b/image/AnimationParams.h
new file mode 100644
index 0000000000..1e20eea04a
--- /dev/null
+++ b/image/AnimationParams.h
@@ -0,0 +1,55 @@
+/* -*- 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_image_AnimationParams_h
+#define mozilla_image_AnimationParams_h
+
+#include <stdint.h>
+#include "mozilla/gfx/Rect.h"
+#include "FrameTimeout.h"
+
+namespace mozilla {
+namespace image {
+
+enum class BlendMethod : int8_t {
+  // All color components of the frame, including alpha, overwrite the current
+  // contents of the frame's output buffer region.
+  SOURCE,
+
+  // The frame should be composited onto the output buffer based on its alpha,
+  // using a simple OVER operation.
+  OVER
+};
+
+enum class DisposalMethod : int8_t {
+  CLEAR_ALL = -1,   // Clear the whole image, revealing what's underneath.
+  NOT_SPECIFIED,    // Leave the frame and let the new frame draw on top.
+  KEEP,             // Leave the frame and let the new frame draw on top.
+  CLEAR,            // Clear the frame's area, revealing what's underneath.
+  RESTORE_PREVIOUS  // Restore the previous (composited) frame.
+};
+
+struct AnimationParams {
+  AnimationParams(const gfx::IntRect& aBlendRect, const FrameTimeout& aTimeout,
+                  uint32_t aFrameNum, BlendMethod aBlendMethod,
+                  DisposalMethod aDisposalMethod)
+      : mBlendRect(aBlendRect),
+        mTimeout(aTimeout),
+        mFrameNum(aFrameNum),
+        mBlendMethod(aBlendMethod),
+        mDisposalMethod(aDisposalMethod) {}
+
+  gfx::IntRect mBlendRect;
+  FrameTimeout mTimeout;
+  uint32_t mFrameNum;
+  BlendMethod mBlendMethod;
+  DisposalMethod mDisposalMethod;
+};
+
+}  // namespace image
+}  // namespace mozilla
+
+#endif  // mozilla_image_AnimationParams_h