gecko-dev/gfx/layers/opengl/GrallocTextureClient.h

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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_GFX_GRALLOCTEXTURECLIENT_H
#define MOZILLA_GFX_GRALLOCTEXTURECLIENT_H
#ifdef MOZ_WIDGET_GONK
#include "mozilla/layers/TextureClient.h"
#include "mozilla/layers/ISurfaceAllocator.h" // For IsSurfaceDescriptorValid
#include "mozilla/layers/FenceUtils.h" // for FenceHandle
#include "mozilla/layers/ShadowLayerUtilsGralloc.h"
#include <ui/GraphicBuffer.h>
namespace android {
class MediaBuffer;
};
namespace mozilla {
namespace gl {
class SharedSurface;
}
namespace layers {
/**
* A TextureClient implementation based on android::GraphicBuffer (also referred to
* as "gralloc").
*
* Gralloc lets us map texture data in memory (accessible through pointers)
* and also use it directly as an OpenGL texture without the cost of texture
* uploads.
* Gralloc buffers can also be shared accros processes.
*
* More info about Gralloc here: https://wiki.mozilla.org/Platform/GFX/Gralloc
*
* This is only used in Firefox OS
*/
class GrallocTextureClientOGL : public BufferTextureClient
{
public:
GrallocTextureClientOGL(ISurfaceAllocator* aAllocator,
gfx::SurfaceFormat aFormat,
gfx::BackendType aMoz2dBackend,
TextureFlags aFlags = TextureFlags::DEFAULT);
~GrallocTextureClientOGL();
virtual bool Lock(OpenMode aMode) override;
virtual void Unlock() override;
virtual bool ImplementsLocking() const override { return true; }
virtual bool HasInternalBuffer() const override { return false; }
virtual bool IsAllocated() const override;
virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) override;
virtual void SetRemoveFromCompositableWaiter(AsyncTransactionWaiter* aWaiter) override;
virtual void WaitForBufferOwnership(bool aWaitReleaseFence = true) override;
void SetTextureFlags(TextureFlags aFlags) { AddFlags(aFlags); }
gfx::IntSize GetSize() const override { return mSize; }
android::sp<android::GraphicBuffer> GetGraphicBuffer()
{
return mGraphicBuffer;
}
android::PixelFormat GetPixelFormat()
{
return mGraphicBuffer->getPixelFormat();
}
virtual uint8_t* GetBuffer() const override;
virtual gfx::DrawTarget* BorrowDrawTarget() override;
virtual void UpdateFromSurface(gfx::SourceSurface* aSurface) override;
virtual bool AllocateForSurface(gfx::IntSize aSize,
TextureAllocationFlags aFlags = ALLOC_DEFAULT) override;
virtual bool AllocateForYCbCr(gfx::IntSize aYSize,
gfx::IntSize aCbCrSize,
StereoMode aStereoMode) override;
bool AllocateForGLRendering(gfx::IntSize aSize);
bool AllocateGralloc(gfx::IntSize aYSize, uint32_t aAndroidFormat, uint32_t aUsage);
void SetIsOpaque(bool aIsOpaque) { mIsOpaque = aIsOpaque; }
virtual bool Allocate(uint32_t aSize) override;
virtual size_t GetBufferSize() const override;
/**
* Hold android::MediaBuffer.
* MediaBuffer needs to be add refed to keep MediaBuffer alive
* during TextureClient is in use.
*/
void SetMediaBuffer(android::MediaBuffer* aMediaBuffer)
{
mMediaBuffer = aMediaBuffer;
}
android::MediaBuffer* GetMediaBuffer()
{
return mMediaBuffer;
}
virtual already_AddRefed<TextureClient>
CreateSimilar(TextureFlags aFlags = TextureFlags::DEFAULT,
TextureAllocationFlags aAllocFlags = ALLOC_DEFAULT) const override;
static already_AddRefed<TextureClient> FromSharedSurface(gl::SharedSurface* surf,
TextureFlags flags);
protected:
/**
* Unfortunately, until bug 879681 is fixed we need to use a GrallocBufferActor.
*/
MaybeMagicGrallocBufferHandle mGrallocHandle;
RefPtr<AsyncTransactionWaiter> mRemoveFromCompositableWaiter;
android::sp<android::GraphicBuffer> mGraphicBuffer;
/**
* Points to a mapped gralloc buffer between calls to lock and unlock.
* Should be null outside of the lock-unlock pair.
*/
uint8_t* mMappedBuffer;
RefPtr<gfx::DrawTarget> mDrawTarget;
android::MediaBuffer* mMediaBuffer;
bool mIsOpaque;
};
} // namespace layers
} // namespace mozilla
#endif // MOZ_WIDGET_GONK
#endif