image/AnimationParams.h
author Mike Hommey <mh+mozilla@glandium.org>
Thu, 05 Jul 2018 14:58:09 +0900
changeset 425426 531b966781e6b2c086a798b18cec231a26a9d3e5
parent 420212 259ee94de92ca9c586cfa02cb92db331aace64d1
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1469091 - Build the clang plugin as a host shared library. r=ted This adds just enough host shared library support for this one use case, but also takes shortcuts, because fully supporting host shared library is a deep rabbit hole I'm not ready to take just to fix --enable-lto --enable-clang-plugin on mac builds. One downside is that one my machine the plugin now takes > 80s to build, instead of 15s before, thanks to the lack of unified sources.

/* -*- 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
{
  gfx::IntRect mBlendRect;
  FrameTimeout mTimeout;
  uint32_t mFrameNum;
  BlendMethod mBlendMethod;
  DisposalMethod mDisposalMethod;
};

} // namespace image
} // namespace mozilla

#endif // mozilla_image_AnimationParams_h