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118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef SHAREDRGBIMAGE_H_
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#define SHAREDRGBIMAGE_H_
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#include "ImageContainer.h"
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#include "ISurfaceAllocator.h"
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namespace mozilla {
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namespace ipc {
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class Shmem;
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}
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namespace layers {
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class BufferTextureClient;
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class TextureClient;
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class ImageClient;
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already_AddRefed<Image> CreateSharedRGBImage(ImageContainer* aImageContainer,
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nsIntSize aSize,
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gfxASurface::gfxImageFormat aImageFormat);
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/**
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* Stores RGB data in shared memory
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* It is assumed that the image width and stride are equal
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*/
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class DeprecatedSharedRGBImage : public Image,
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public ISharedImage
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{
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friend already_AddRefed<Image> CreateSharedRGBImage(ImageContainer* aImageContainer,
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nsIntSize aSize,
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gfxASurface::gfxImageFormat aImageFormat);
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public:
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typedef gfxASurface::gfxImageFormat gfxImageFormat;
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struct Header {
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gfxImageFormat mImageFormat;
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};
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DeprecatedSharedRGBImage(ISurfaceAllocator *aAllocator);
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~DeprecatedSharedRGBImage();
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uint8_t *GetBuffer();
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gfxIntSize GetSize();
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size_t GetBufferSize();
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static uint8_t BytesPerPixel(gfxImageFormat aImageFormat);
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already_AddRefed<gfxASurface> GetAsSurface();
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/**
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* Setup the Surface descriptor to contain this image's shmem, while keeping
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* ownership of the shmem.
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* if the operation succeeds, return true and AddRef this DeprecatedSharedRGBImage.
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*/
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bool ToSurfaceDescriptor(SurfaceDescriptor& aResult);
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/**
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* Setup the Surface descriptor to contain this image's shmem, and loose
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* ownership of the shmem.
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* if the operation succeeds, return true (and does _not_ AddRef this
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* DeprecatedSharedRGBImage).
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*/
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bool DropToSurfaceDescriptor(SurfaceDescriptor& aResult);
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/**
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* Returns a DeprecatedSharedRGBImage* iff the descriptor was initialized with
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* ToSurfaceDescriptor.
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*/
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static DeprecatedSharedRGBImage* FromSurfaceDescriptor(const SurfaceDescriptor& aDescriptor);
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bool AllocateBuffer(nsIntSize aSize, gfxImageFormat aImageFormat);
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TextureClient* GetTextureClient() MOZ_OVERRIDE { return nullptr; }
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protected:
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gfxIntSize mSize;
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gfxImageFormat mImageFormat;
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ISurfaceAllocator* mSurfaceAllocator;
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bool mAllocated;
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ipc::Shmem *mShmem;
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};
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/**
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* Stores RGB data in shared memory
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* It is assumed that the image width and stride are equal
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*/
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class SharedRGBImage : public Image
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, public ISharedImage
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{
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typedef gfxASurface::gfxImageFormat gfxImageFormat;
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public:
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SharedRGBImage(ImageClient* aCompositable);
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~SharedRGBImage();
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virtual TextureClient* GetTextureClient() MOZ_OVERRIDE;
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virtual uint8_t* GetBuffer() MOZ_OVERRIDE;
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gfxIntSize GetSize();
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size_t GetBufferSize();
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already_AddRefed<gfxASurface> GetAsSurface();
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bool Allocate(gfx::IntSize aSize, gfx::SurfaceFormat aFormat);
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private:
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gfx::IntSize mSize;
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RefPtr<ImageClient> mCompositable;
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RefPtr<BufferTextureClient> mTextureClient;
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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