1 files changed, 61 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/codec/SkCodecAnimation.h b/gfx/skia/skia/include/codec/SkCodecAnimation.h
new file mode 100644
index 0000000000..c5883e2af2
--- /dev/null
+++ b/gfx/skia/skia/include/codec/SkCodecAnimation.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkCodecAnimation_DEFINED
+#define SkCodecAnimation_DEFINED
+
+namespace SkCodecAnimation {
+    /**
+     *  This specifies how the next frame is based on this frame.
+     *
+     *  Names are based on the GIF 89a spec.
+     *
+     *  The numbers correspond to values in a GIF.
+     */
+    enum class DisposalMethod {
+        /**
+         *  The next frame should be drawn on top of this one.
+         *
+         *  In a GIF, a value of 0 (not specified) is also treated as Keep.
+         */
+        kKeep               = 1,
+
+        /**
+         *  Similar to Keep, except the area inside this frame's rectangle
+         *  should be cleared to the BackGround color (transparent) before
+         *  drawing the next frame.
+         */
+        kRestoreBGColor     = 2,
+
+        /**
+         *  The next frame should be drawn on top of the previous frame - i.e.
+         *  disregarding this one.
+         *
+         *  In a GIF, a value of 4 is also treated as RestorePrevious.
+         */
+        kRestorePrevious    = 3,
+    };
+
+    /**
+     * How to blend the current frame.
+     */
+    enum class Blend {
+        /**
+         *  Blend with the prior frame as if using SkBlendMode::kSrcOver.
+         */
+        kSrcOver,
+
+        /**
+         *  Blend with the prior frame as if using SkBlendMode::kSrc.
+         *
+         *  This frame's pixels replace the destination pixels.
+         */
+        kSrc,
+    };
+
+} // namespace SkCodecAnimation
+#endif // SkCodecAnimation_DEFINED