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/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
/* 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 SHARED_SURFACEIO_H_
#define SHARED_SURFACEIO_H_

#include "SharedSurfaceGL.h"
#include "mozilla/RefPtr.h"

class MacIOSurface;

namespace mozilla {
namespace gl {

class SharedSurface_IOSurface : public SharedSurface_GL
{
public:
    static SharedSurface_IOSurface* Create(MacIOSurface* surface, GLContext *gl, bool hasAlpha);

    ~SharedSurface_IOSurface();

    virtual void LockProdImpl() { }
    virtual void UnlockProdImpl() { }

    virtual void Fence();
    virtual bool WaitSync() { return true; }

    virtual bool ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
                            GLenum format, GLenum type, GLvoid *pixels) MOZ_OVERRIDE;

    virtual GLuint Texture() const
    {
        return mTexture;
    }

    virtual GLenum TextureTarget() const {
        return LOCAL_GL_TEXTURE_RECTANGLE_ARB;
    }

    static SharedSurface_IOSurface* Cast(SharedSurface *surf)
    {
        MOZ_ASSERT(surf->Type() == SharedSurfaceType::IOSurface);
        return static_cast<SharedSurface_IOSurface*>(surf);
    }

    MacIOSurface* GetIOSurface() { return mSurface; }

private:
    SharedSurface_IOSurface(MacIOSurface* surface, GLContext* gl, const gfxIntSize& size, bool hasAlpha);

    RefPtr<MacIOSurface> mSurface;
    nsRefPtr<gfxImageSurface> mImageSurface;
    GLuint mTexture;
};

class SurfaceFactory_IOSurface : public SurfaceFactory_GL
{
public:
    SurfaceFactory_IOSurface(GLContext* gl,
                             const SurfaceCaps& caps)
        : SurfaceFactory_GL(gl, SharedSurfaceType::IOSurface, caps)
    {
    }

protected:
    virtual SharedSurface* CreateShared(const gfxIntSize& size) MOZ_OVERRIDE;
};

} /* namespace gfx */
} /* namespace mozilla */

#endif /* SHARED_SURFACEIO_H_ */