зеркало из https://github.com/mozilla/gecko-dev.git
152 строки
4.3 KiB
C++
152 строки
4.3 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 "mozilla/layers/ISurfaceAllocator.h" // For IsSurfaceDescriptorValid
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#include "mozilla/layers/FenceUtils.h" // for FenceHandle
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#include "mozilla/layers/ShadowLayerUtilsGralloc.h"
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#include <ui/GraphicBuffer.h>
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namespace android {
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class MediaBuffer;
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};
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namespace mozilla {
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namespace gl {
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class SharedSurface;
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}
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namespace layers {
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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(ISurfaceAllocator* aAllocator,
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gfx::SurfaceFormat aFormat,
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gfx::BackendType aMoz2dBackend,
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TextureFlags aFlags = TextureFlags::DEFAULT);
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~GrallocTextureClientOGL();
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virtual bool Lock(OpenMode aMode) override;
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virtual void Unlock() override;
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virtual bool ImplementsLocking() const override { return true; }
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virtual bool HasInternalBuffer() const override { return false; }
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virtual bool IsAllocated() const override;
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virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) override;
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virtual void SetRemoveFromCompositableWaiter(AsyncTransactionWaiter* aWaiter) override;
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virtual void WaitForBufferOwnership(bool aWaitReleaseFence = true) override;
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void SetTextureFlags(TextureFlags aFlags) { AddFlags(aFlags); }
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gfx::IntSize GetSize() const override { return mSize; }
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android::sp<android::GraphicBuffer> GetGraphicBuffer()
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{
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return mGraphicBuffer;
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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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virtual uint8_t* GetBuffer() const override;
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virtual gfx::DrawTarget* BorrowDrawTarget() override;
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virtual bool AllocateForSurface(gfx::IntSize aSize,
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TextureAllocationFlags aFlags = ALLOC_DEFAULT) override;
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virtual bool AllocateForYCbCr(gfx::IntSize aYSize,
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gfx::IntSize aCbCrSize,
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StereoMode aStereoMode) override;
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bool AllocateForGLRendering(gfx::IntSize aSize);
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bool AllocateGralloc(gfx::IntSize aYSize, uint32_t aAndroidFormat, uint32_t aUsage);
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void SetIsOpaque(bool aIsOpaque) { mIsOpaque = aIsOpaque; }
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virtual bool Allocate(uint32_t aSize) override;
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virtual size_t GetBufferSize() const override;
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/**
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* Hold android::MediaBuffer.
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* MediaBuffer needs to be add refed to keep MediaBuffer alive
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* during TextureClient is in use.
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*/
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void SetMediaBuffer(android::MediaBuffer* aMediaBuffer)
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{
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mMediaBuffer = aMediaBuffer;
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}
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android::MediaBuffer* GetMediaBuffer()
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{
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return mMediaBuffer;
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}
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virtual already_AddRefed<TextureClient>
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CreateSimilar(TextureFlags aFlags = TextureFlags::DEFAULT,
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TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
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static already_AddRefed<TextureClient> FromSharedSurface(gl::SharedSurface* surf,
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TextureFlags flags);
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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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MaybeMagicGrallocBufferHandle mGrallocHandle;
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RefPtr<AsyncTransactionWaiter> mRemoveFromCompositableWaiter;
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android::sp<android::GraphicBuffer> mGraphicBuffer;
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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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RefPtr<gfx::DrawTarget> mDrawTarget;
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android::MediaBuffer* mMediaBuffer;
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bool mIsOpaque;
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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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