gecko-dev/gfx/layers/ipc/LayersSurfaces.ipdlh

/* 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/. */

include protocol PGrallocBuffer;

include "gfxipc/ShadowLayerUtils.h";

using gfx3DMatrix;
using gfxIntSize;
using gfxPoint;
using gfxRGBA;
using nsIntPoint;
using nsIntRect;
using nsIntRegion;
using nsIntSize;
using mozilla::gfxContentType;
using mozilla::GraphicsFilterType;
using mozilla::layers::FrameMetrics;
using mozilla::layers::MagicGrallocBufferHandle;
using mozilla::layers::SurfaceDescriptorX11;
using mozilla::null_t;
using mozilla::WindowsHandle;
using mozilla::gl::SharedTextureHandle;
using mozilla::gl::GLContext::SharedTextureShareType;
using mozilla::gfx::SurfaceStreamHandle;

namespace mozilla {
namespace layers {

union MaybeMagicGrallocBufferHandle {
  MagicGrallocBufferHandle;
  null_t;
};

struct SurfaceDescriptorD3D10 {
  WindowsHandle handle;
  bool hasAlpha;
};

struct SharedTextureDescriptor {
  SharedTextureShareType shareType;
  SharedTextureHandle handle;
  nsIntSize size;
  bool inverted;
};

struct SurfaceDescriptorGralloc {
  PGrallocBuffer buffer;
  /**
   * android::GraphicBuffer has a size information. But there are cases
   * that GraphicBuffer's size and actual video's size are different.
   * Extra size member is necessary. See Bug 850566.
   */
  nsIntSize size;

  /**
   * We can have one source producing gralloc buffers and sharing them
   * with another source that may also produce its own gralloc buffers.
   * This happens for camera preview buffers sent to video code.  When
   * that happens, the producer can mark the buffer as "external" to
   * prevent its consumer from mistakenly freeing the buffer.
   */
  bool external;

  /**
   * This gralloc buffer will be treated as if the RB bytes are swapped.
   * This is useful for rendering using Cairo/Thebes, because there is no
   * BGRX Android pixel format, and so we have to do byte swapping.
   *
   * For example, if the GraphicBuffer has an Android pixel format of
   * PIXEL_FORMAT_RGBA_8888 and isRBSwapped is true, when it is sampled
   * (for example, with GL), a BGRA shader should be used.
   */
  bool isRBSwapped;
};

struct SurfaceStreamDescriptor {
  SurfaceStreamHandle handle;
  bool yflip;
};

struct YCbCrImage {
  Shmem data;
  uint64_t owner;
};

// XXX remove RGBImage (see bug 847914)
struct RGBImage {
  Shmem data;
  nsIntRect picture;
  uint32_t rgbFormat;
  uint64_t owner;
};

struct MemoryImage {
  uintptr_t data;
  gfxIntSize size;
  uint32_t stride;
  uint32_t format;
};

union SurfaceDescriptor {
  Shmem;
  SurfaceDescriptorD3D10;
  SurfaceDescriptorGralloc;
  SurfaceDescriptorX11;
  YCbCrImage;
  RGBImage;
  SharedTextureDescriptor;
  SurfaceStreamDescriptor;
  MemoryImage;
  null_t;
};

} // namespace
} // namespace