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7d182a2102
Please contact Bas Schouten <bschouten@mozilla.com>, Nicolas Silva <nsilva@mozilla.com> or Nicholas Cameron <ncameron@mozilla.com> with general questions. Below is a rough list of authors to contact with specific questions. Authors: gfx/layers/Compositor.* gfx/layers/Effects.h - Compositor Interface - bas,nrc,nical gfx/layers/d3d* - D3D9/D3D10 - bas gfx/layers/ThebesLayer* - ThebesLayers - nrc,bas gfx/layers/composite/* - CompositeLayers - nrc,nical gfx/layers/client/* - Client - nrc,nical,bas gfx/layers/*Image* - nical gfx/layers/ipc ipc - IPC - nical gfx/layers/opengl - CompositorOGL - nrc,nical gfx/2d - bas,nrc gfx/gl - GLContext - bjacob dom/* layout/* - DOM - mattwoodrow
79 lines
2.1 KiB
C++
79 lines
2.1 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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/**
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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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{
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typedef gfxASurface::gfxImageFormat gfxImageFormat;
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public:
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struct Header {
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gfxImageFormat mImageFormat;
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};
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SharedRGBImage(ISurfaceAllocator *aAllocator);
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~SharedRGBImage();
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static already_AddRefed<SharedRGBImage> Create(ImageContainer* aImageContainer,
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nsIntSize aSize,
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gfxImageFormat aImageFormat);
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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 SharedRGBImage.
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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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* SharedRGBImage).
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*/
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bool DropToSurfaceDescriptor(SurfaceDescriptor& aResult);
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/**
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* Returns a SharedRGBImage* iff the descriptor was initialized with
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* ToSurfaceDescriptor.
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*/
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static SharedRGBImage* FromSurfaceDescriptor(const SurfaceDescriptor& aDescriptor);
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private:
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bool AllocateBuffer(nsIntSize aSize, gfxImageFormat aImageFormat);
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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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} // namespace layers
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} // namespace mozilla
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#endif
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