michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0: //  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef MOZILLA_GFX_TEXTURECLIENTOGL_H
michael@0: #define MOZILLA_GFX_TEXTURECLIENTOGL_H
michael@0: 
michael@0: #include "GLContextTypes.h"             // for SharedTextureHandle, etc
michael@0: #include "gfxTypes.h"
michael@0: #include "mozilla/Attributes.h"         // for MOZ_OVERRIDE
michael@0: #include "mozilla/gfx/Point.h"          // for IntSize
michael@0: #include "mozilla/layers/CompositorTypes.h"
michael@0: #include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor
michael@0: #include "mozilla/layers/TextureClient.h"  // for TextureClient, etc
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace gfx {
michael@0: class SurfaceStream;
michael@0: }
michael@0: }
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class CompositableForwarder;
michael@0: 
michael@0: /**
michael@0:  * A TextureClient implementation to share TextureMemory that is already
michael@0:  * on the GPU, for the OpenGL backend.
michael@0:  */
michael@0: class SharedTextureClientOGL : public TextureClient
michael@0: {
michael@0: public:
michael@0:   SharedTextureClientOGL(TextureFlags aFlags);
michael@0: 
michael@0:   ~SharedTextureClientOGL();
michael@0: 
michael@0:   virtual bool IsAllocated() const MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool Lock(OpenMode mode) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual void Unlock() MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool IsLocked() const MOZ_OVERRIDE { return mIsLocked; }
michael@0: 
michael@0:   virtual bool HasInternalBuffer() const MOZ_OVERRIDE { return false; }
michael@0: 
michael@0:   void InitWith(gl::SharedTextureHandle aHandle,
michael@0:                 gfx::IntSize aSize,
michael@0:                 gl::SharedTextureShareType aShareType,
michael@0:                 bool aInverted = false);
michael@0: 
michael@0:   virtual gfx::IntSize GetSize() const { return mSize; }
michael@0: 
michael@0:   virtual TextureClientData* DropTextureData() MOZ_OVERRIDE
michael@0:   {
michael@0:     // XXX - right now the code paths using this are managing the shared texture
michael@0:     // data, although they should use a TextureClientData for this to ensure that
michael@0:     // the destruction sequence is race-free.
michael@0:     MarkInvalid();
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE
michael@0:   {
michael@0:     return gfx::SurfaceFormat::UNKNOWN;
michael@0:   }
michael@0: 
michael@0:   virtual bool AllocateForSurface(gfx::IntSize aSize, TextureAllocationFlags aFlags) MOZ_OVERRIDE
michael@0:   {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0: protected:
michael@0:   gl::SharedTextureHandle mHandle;
michael@0:   gfx::IntSize mSize;
michael@0:   gl::SharedTextureShareType mShareType;
michael@0:   bool mInverted;
michael@0:   bool mIsLocked;
michael@0: };
michael@0: 
michael@0: /**
michael@0:  * A TextureClient implementation to share SurfaceStream.
michael@0:  */
michael@0: class StreamTextureClientOGL : public TextureClient
michael@0: {
michael@0: public:
michael@0:   StreamTextureClientOGL(TextureFlags aFlags);
michael@0: 
michael@0:   ~StreamTextureClientOGL();
michael@0: 
michael@0:   virtual bool IsAllocated() const MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool Lock(OpenMode mode) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual void Unlock() MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual bool IsLocked() const MOZ_OVERRIDE { return mIsLocked; }
michael@0: 
michael@0:   virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;
michael@0: 
michael@0:   virtual TextureClientData* DropTextureData() MOZ_OVERRIDE { return nullptr; }
michael@0: 
michael@0:   virtual bool HasInternalBuffer() const MOZ_OVERRIDE { return false; }
michael@0: 
michael@0:   void InitWith(gfx::SurfaceStream* aStream);
michael@0: 
michael@0:   virtual gfx::IntSize GetSize() const { return gfx::IntSize(); }
michael@0: 
michael@0:   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE
michael@0:   {
michael@0:     return gfx::SurfaceFormat::UNKNOWN;
michael@0:   }
michael@0: 
michael@0:   virtual bool AllocateForSurface(gfx::IntSize aSize, TextureAllocationFlags aFlags) MOZ_OVERRIDE
michael@0:   {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0: protected:
michael@0:   bool mIsLocked;
michael@0:   RefPtr<gfx::SurfaceStream> mStream;
michael@0:   RefPtr<gl::GLContext> mGL;
michael@0: };
michael@0: 
michael@0: } // namespace
michael@0: } // namespace
michael@0: 
michael@0: #endif