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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
#ifndef MOZILLA_LAYERS_BUFFERETEXTURE
#define MOZILLA_LAYERS_BUFFERETEXTURE
#include "mozilla/RefPtr.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Types.h"
#include "mozilla/ipc/SharedMemory.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::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::ChromaSubsampling aSubsampling, TextureFlags aTextureFlags);
bool Lock(OpenMode aMode) override { return true; }
void Unlock() override {}
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::YUVColorSpace> GetYUVColorSpace() const;
Maybe<gfx::ColorDepth> GetColorDepth() 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;
protected:
static BufferTextureData* Create(
gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags,
mozilla::ipc::IShmemAllocator* 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)
: mDescriptor(aDescriptor), mMoz2DBackend(aMoz2DBackend) {}
~BufferTextureData() override = default;
BufferDescriptor mDescriptor;
gfx::BackendType mMoz2DBackend;
};
template <typename ShmemAllocator>
inline BufferTextureData* BufferTextureData::Create(
gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags,
ShmemAllocator aAllocator) {
return Create(aSize, aFormat, aMoz2DBackend, aLayersBackend, aFlags,
aAllocFlags, aAllocator, aAllocator->IsSameProcess());
}
// nullptr allocator specialization
template <>
inline BufferTextureData* BufferTextureData::Create(
gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::BackendType aMoz2DBackend, LayersBackend aLayersBackend,
TextureFlags aFlags, TextureAllocationFlags aAllocFlags, std::nullptr_t) {
return Create(aSize, aFormat, aMoz2DBackend, aLayersBackend, aFlags,
aAllocFlags, nullptr, true);
}
} // namespace layers
} // namespace mozilla
#endif