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