/* 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/gfx/2D.h"
#include "mozilla/gfx/Types.h"
#include "mozilla/layers/TextureClient.h"
namespace mozilla {
namespace layers {
class BufferTextureData : public TextureData {
public:
// ShmemAllocator needs to implement IShmemAllocator and IsSameProcess,
// as done in LayersIPCChannel and ISurfaceAllocator.
template <typename ShmemAllocator>
static BufferTextureData* Create(
gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::ColorSpace2 aColorSpace, gfx::TransferFunction aTransferFunction,
gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags,
ShmemAllocator aAllocator);
static BufferTextureData* CreateForYCbCr(
KnowsCompositor* aAllocator,
const gfx::IntRect& aDisplay,
const gfx::IntSize& aYSize, uint32_t aYStride,
const gfx::IntSize& aCbCrSize, uint32_t aCbCrStride,
StereoMode aStereoMode, gfx::ColorDepth aColorDepth,
gfx::YUVColorSpace aYUVColorSpace, gfx::ColorRange aColorRange,
gfx::TransferFunction aTransferFunction,
gfx::ChromaSubsampling aSubsampling, TextureFlags aTextureFlags,
const Maybe<gfx::HDRMetadata>& aHDRMetadata = Nothing());
bool Lock(OpenMode aMode) override {
return true; }
void Unlock() override { mIsClear =
false; }
void FillInfo(TextureData::Info& aInfo)
const override;
already_AddRefed<gfx::DrawTarget> BorrowDrawTarget() override;
bool BorrowMappedData(MappedTextureData& aMap) override;
bool BorrowMappedYCbCrData(MappedYCbCrTextureData& aMap) override;
// use TextureClient's default implementation
bool UpdateFromSurface(gfx::SourceSurface* aSurface) override;
BufferTextureData* AsBufferTextureData() override {
return this; }
Maybe<gfx::IntSize> GetYSize()
const;
Maybe<gfx::IntSize> GetCbCrSize()
const;
Maybe<int32_t> GetYStride()
const;
Maybe<int32_t> GetCbCrStride()
const;
Maybe<gfx::ColorSpace2> GetColorSpace2()
const;
Maybe<gfx::YUVColorSpace> GetYUVColorSpace()
const;
Maybe<gfx::ColorDepth> GetColorDepth()
const;
Maybe<gfx::TransferFunction> GetTransferFunction()
const;
Maybe<StereoMode> GetStereoMode()
const;
Maybe<gfx::ChromaSubsampling> GetChromaSubsampling()
const;
gfx::IntRect GetPictureRect()
const;
gfx::IntSize GetSize()
const;
gfx::SurfaceFormat GetFormat()
const;
virtual size_t GetBufferSize() =
0;
virtual
void OnBorrowDrawTarget(gfx::DrawTarget* aDrawTarget) {}
protected:
static BufferTextureData* Create(
gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::ColorSpace2 aColorSpace, gfx::TransferFunction aTransferFunction,
gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags,
LayersIPCChannel* aAllocator,
bool aIsSameProcess);
static BufferTextureData* CreateInternal(LayersIPCChannel* aAllocator,
const BufferDescriptor& aDesc,
gfx::BackendType aMoz2DBackend,
int32_t aBufferSize,
TextureFlags aTextureFlags);
virtual uint8_t* GetBuffer() =
0;
BufferTextureData(
const BufferDescriptor& aDescriptor,
gfx::BackendType aMoz2DBackend,
bool aIsClear =
false)
: mDescriptor(aDescriptor),
mMoz2DBackend(aMoz2DBackend),
mIsClear(aIsClear) {}
~BufferTextureData() override =
default;
BufferDescriptor mDescriptor;
gfx::BackendType mMoz2DBackend;
bool mIsClear =
false;
};
template <typename ShmemAllocator>
inline BufferTextureData* BufferTextureData::Create(
gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::ColorSpace2 aColorSpace, gfx::TransferFunction aTransferFunction,
gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags,
ShmemAllocator aAllocator) {
return Create(aSize, aFormat, aColorSpace, aTransferFunction, aMoz2DBackend,
aLayersBackend, aFlags, aAllocFlags, aAllocator,
aAllocator->IsSameProcess());
}
// nullptr allocator specialization
template <>
inline BufferTextureData* BufferTextureData::Create(
gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::ColorSpace2 aColorSpace, gfx::TransferFunction aTransferFunction,
gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags, std::nullptr_t) {
return Create(aSize, aFormat, aColorSpace, aTransferFunction, aMoz2DBackend,
aLayersBackend, aFlags, aAllocFlags, nullptr, true);
}
}
// namespace layers
}
// namespace mozilla
#endif