100 lines
3.6 KiB
C++
100 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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// * 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 MOZILLA_LAYERS_BUFFERETEXTURE
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#define MOZILLA_LAYERS_BUFFERETEXTURE
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#include "mozilla/layers/TextureClient.h"
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#include "mozilla/ipc/SharedMemory.h"
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#include "mozilla/gfx/Types.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/RefPtr.h"
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namespace mozilla {
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namespace layers {
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bool ComputeHasIntermediateBuffer(gfx::SurfaceFormat aFormat,
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LayersBackend aLayersBackend);
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class BufferTextureData : public TextureData
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{
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public:
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static BufferTextureData* Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
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gfx::BackendType aMoz2DBackend,
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LayersBackend aLayersBackend,
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TextureFlags aFlags,
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TextureAllocationFlags aAllocFlags,
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LayersIPCChannel* aAllocator);
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static BufferTextureData* CreateForYCbCr(KnowsCompositor* aAllocator,
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gfx::IntSize aYSize,
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gfx::IntSize aCbCrSize,
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StereoMode aStereoMode,
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YUVColorSpace aYUVColorSpace,
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TextureFlags aTextureFlags);
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// It is generally better to use CreateForYCbCr instead.
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// This creates a half-initialized texture since we don't know the sizes and
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// offsets in the buffer.
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static BufferTextureData* CreateForYCbCrWithBufferSize(KnowsCompositor* aAllocator,
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int32_t aSize,
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YUVColorSpace aYUVColorSpace,
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TextureFlags aTextureFlags);
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virtual bool Lock(OpenMode aMode) override { return true; }
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virtual void Unlock() override {}
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virtual void FillInfo(TextureData::Info& aInfo) const override;
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virtual already_AddRefed<gfx::DrawTarget> BorrowDrawTarget() override;
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virtual bool BorrowMappedData(MappedTextureData& aMap) override;
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virtual bool BorrowMappedYCbCrData(MappedYCbCrTextureData& aMap) override;
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// use TextureClient's default implementation
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virtual bool UpdateFromSurface(gfx::SourceSurface* aSurface) override;
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virtual BufferTextureData* AsBufferTextureData() override { return this; }
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// Don't use this.
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void SetDesciptor(const BufferDescriptor& aDesc);
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Maybe<gfx::IntSize> GetCbCrSize() const;
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Maybe<YUVColorSpace> GetYUVColorSpace() const;
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Maybe<StereoMode> GetStereoMode() const;
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protected:
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gfx::IntSize GetSize() const;
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gfx::SurfaceFormat GetFormat() const;
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static BufferTextureData* CreateInternal(LayersIPCChannel* aAllocator,
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const BufferDescriptor& aDesc,
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gfx::BackendType aMoz2DBackend,
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int32_t aBufferSize,
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TextureFlags aTextureFlags);
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virtual uint8_t* GetBuffer() = 0;
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virtual size_t GetBufferSize() = 0;
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BufferTextureData(const BufferDescriptor& aDescriptor, gfx::BackendType aMoz2DBackend)
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: mDescriptor(aDescriptor)
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, mMoz2DBackend(aMoz2DBackend)
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{}
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RefPtr<gfx::DrawTarget> mDrawTarget;
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BufferDescriptor mDescriptor;
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gfx::BackendType mMoz2DBackend;
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};
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} // namespace
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} // namespace
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#endif
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