mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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130 lines
3.8 KiB
C++
130 lines
3.8 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_GFX_GRALLOCTEXTURECLIENT_H
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#define MOZILLA_GFX_GRALLOCTEXTURECLIENT_H
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#ifdef MOZ_WIDGET_GONK
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#include "mozilla/layers/TextureClient.h"
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#include "ISurfaceAllocator.h" // For IsSurfaceDescriptorValid
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#include "mozilla/layers/ShadowLayerUtilsGralloc.h"
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#include <ui/GraphicBuffer.h>
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namespace mozilla {
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namespace layers {
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class GraphicBufferLocked;
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/**
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* A TextureClient implementation based on android::GraphicBuffer (also referred to
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* as "gralloc").
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*
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* Gralloc lets us map texture data in memory (accessible through pointers)
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* and also use it directly as an OpenGL texture without the cost of texture
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* uploads.
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* Gralloc buffers can also be shared accros processes.
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*
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* More info about Gralloc here: https://wiki.mozilla.org/Platform/GFX/Gralloc
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*
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* This is only used in Firefox OS
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*/
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class GrallocTextureClientOGL : public BufferTextureClient
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{
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public:
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GrallocTextureClientOGL(GrallocBufferActor* aActor,
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gfx::IntSize aSize,
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TextureFlags aFlags = TEXTURE_FLAGS_DEFAULT);
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GrallocTextureClientOGL(CompositableClient* aCompositable,
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gfx::SurfaceFormat aFormat,
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TextureFlags aFlags = TEXTURE_FLAGS_DEFAULT);
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~GrallocTextureClientOGL();
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virtual bool Lock(OpenMode aMode) MOZ_OVERRIDE;
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virtual void Unlock() MOZ_OVERRIDE;
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virtual bool ImplementsLocking() const MOZ_OVERRIDE { return true; }
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virtual bool IsAllocated() const MOZ_OVERRIDE;
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virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;
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virtual TextureClientData* DropTextureData() MOZ_OVERRIDE;
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void InitWith(GrallocBufferActor* aActor, gfx::IntSize aSize);
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gfx::IntSize GetSize() const MOZ_OVERRIDE { return mSize; }
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android::GraphicBuffer* GetGraphicBuffer()
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{
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return mGraphicBuffer.get();
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}
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android::PixelFormat GetPixelFormat()
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{
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return mGraphicBuffer->getPixelFormat();
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}
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/**
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* These flags are important for performances because they'll let the driver
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* optimize for the right usage.
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* Be sure to specify them before calling Lock.
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*/
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void SetGrallocOpenFlags(uint32_t aFlags)
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{
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mGrallocFlags = aFlags;
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}
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virtual uint8_t* GetBuffer() const MOZ_OVERRIDE;
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virtual bool AllocateForSurface(gfx::IntSize aSize) MOZ_OVERRIDE;
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virtual bool AllocateForYCbCr(gfx::IntSize aYSize,
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gfx::IntSize aCbCrSize,
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StereoMode aStereoMode) MOZ_OVERRIDE;
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bool AllocateGralloc(gfx::IntSize aYSize, uint32_t aAndroidFormat, uint32_t aUsage);
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virtual bool Allocate(uint32_t aSize) MOZ_OVERRIDE;
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virtual size_t GetBufferSize() const MOZ_OVERRIDE;
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void SetGraphicBufferLocked(GraphicBufferLocked* aBufferLocked);
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protected:
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/**
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* Unfortunately, until bug 879681 is fixed we need to use a GrallocBufferActor.
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*/
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GrallocBufferActor* mGrallocActor;
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RefPtr<GraphicBufferLocked> mBufferLocked;
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android::sp<android::GraphicBuffer> mGraphicBuffer;
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/**
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* Flags that are used when locking the gralloc buffer
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*/
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uint32_t mGrallocFlags;
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/**
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* Points to a mapped gralloc buffer between calls to lock and unlock.
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* Should be null outside of the lock-unlock pair.
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*/
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uint8_t* mMappedBuffer;
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/**
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* android::GraphicBuffer has a size information. But there are cases
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* that GraphicBuffer's size and actual video's size are different.
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* Extra size member is necessary. See Bug 850566.
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*/
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gfx::IntSize mSize;
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};
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} // namespace layers
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} // namespace mozilla
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#endif // MOZ_WIDGET_GONK
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#endif
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