зеркало из https://github.com/mozilla/gecko-dev.git
116 строки
3.6 KiB
C++
116 строки
3.6 KiB
C++
/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
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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 SHARED_SURFACE_GRALLOC_H_
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#define SHARED_SURFACE_GRALLOC_H_
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#include "SharedSurfaceGL.h"
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#include "mozilla/layers/LayersSurfaces.h"
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#include "mozilla/layers/ISurfaceAllocator.h"
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namespace mozilla {
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namespace layers {
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class ISurfaceAllocator;
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class SurfaceDescriptorGralloc;
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}
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namespace gl {
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class GLContext;
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class GLLibraryEGL;
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class SharedSurface_Gralloc
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: public SharedSurface_GL
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{
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public:
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static SharedSurface_Gralloc* Create(GLContext* prodGL,
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const GLFormats& formats,
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const gfxIntSize& size,
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bool hasAlpha,
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layers::ISurfaceAllocator* allocator);
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static SharedSurface_Gralloc* Cast(SharedSurface* surf) {
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MOZ_ASSERT(surf->Type() == SharedSurfaceType::Gralloc);
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return (SharedSurface_Gralloc*)surf;
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}
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protected:
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GLLibraryEGL* const mEGL;
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RefPtr<layers::ISurfaceAllocator> mAllocator;
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// We keep the SurfaceDescriptor around, because we'll end up
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// using it often and it's handy to do so. The actual
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// GraphicBuffer is kept alive by the sp<GraphicBuffer> in
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// GrallocBufferActor; the actor will stay alive until we
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// explicitly destroy this descriptor (and thus deallocate the
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// actor) it in the destructor of this class. This is okay to do
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// on the client, but is very bad to do on the server (because on
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// the client, the actor has no chance of going away unless the
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// whole app died).
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layers::SurfaceDescriptorGralloc mDesc;
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const GLuint mProdTex;
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SharedSurface_Gralloc(GLContext* prodGL,
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const gfxIntSize& size,
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bool hasAlpha,
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GLLibraryEGL* egl,
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layers::ISurfaceAllocator* allocator,
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layers::SurfaceDescriptorGralloc& desc,
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GLuint prodTex)
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: SharedSurface_GL(SharedSurfaceType::Gralloc,
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AttachmentType::GLTexture,
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prodGL,
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size,
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hasAlpha)
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, mEGL(egl)
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, mAllocator(allocator)
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, mDesc(desc)
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, mProdTex(prodTex)
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{}
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static bool HasExtensions(GLLibraryEGL* egl, GLContext* gl);
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public:
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virtual ~SharedSurface_Gralloc();
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virtual void Fence();
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virtual bool WaitSync();
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virtual void LockProdImpl();
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virtual void UnlockProdImpl();
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virtual GLuint Texture() const {
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return mProdTex;
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}
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layers::SurfaceDescriptorGralloc& GetDescriptor() {
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return mDesc;
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}
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};
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class SurfaceFactory_Gralloc
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: public SurfaceFactory_GL
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{
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protected:
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RefPtr<layers::ISurfaceAllocator> mAllocator;
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public:
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SurfaceFactory_Gralloc(GLContext* prodGL,
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const SurfaceCaps& caps,
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layers::ISurfaceAllocator* allocator = nullptr);
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virtual SharedSurface* CreateShared(const gfxIntSize& size) {
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bool hasAlpha = mReadCaps.alpha;
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if (!mAllocator) {
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return nullptr;
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}
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return SharedSurface_Gralloc::Create(mGL, mFormats, size, hasAlpha, mAllocator);
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}
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};
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} /* namespace gl */
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} /* namespace mozilla */
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#endif /* SHARED_SURFACE_GRALLOC_H_ */
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