/* -*- 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_TEXTURECLIENT_SHAREDSURFACE_H
#define MOZILLA_GFX_TEXTURECLIENT_SHAREDSURFACE_H

#include <cstddef>                      // for size_t
#include <stdint.h>                     // for uint32_t, uint8_t, uint64_t
#include "GLContextTypes.h"             // for GLContext (ptr only), etc
#include "TextureClient.h"
#include "mozilla/Assertions.h"         // for MOZ_ASSERT, etc
#include "mozilla/RefPtr.h"             // for RefPtr, RefCounted
#include "mozilla/gfx/Point.h"          // for IntSize
#include "mozilla/gfx/Types.h"          // for SurfaceFormat
#include "mozilla/layers/CompositorTypes.h"  // for TextureFlags, etc
#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor

namespace mozilla {
namespace gl {
class GLContext;
class SharedSurface;
class SurfaceFactory;
} // namespace gl

namespace layers {

class SharedSurfaceTextureClient;

class SharedSurfaceTextureData : public TextureData
{
protected:
  const UniquePtr<gl::SharedSurface> mSurf;

  friend class SharedSurfaceTextureClient;

  explicit SharedSurfaceTextureData(UniquePtr<gl::SharedSurface> surf);
public:

  ~SharedSurfaceTextureData();

  virtual bool Lock(OpenMode, FenceHandle*) override { return false; }

  virtual void Unlock() override {}

  virtual bool HasInternalBuffer() const override { return false; }

  virtual gfx::SurfaceFormat GetFormat() const override {
    return gfx::SurfaceFormat::UNKNOWN;
  }

  virtual gfx::IntSize GetSize() const override;

  virtual bool Serialize(SurfaceDescriptor& aOutDescriptor) override;

  virtual void Deallocate(ISurfaceAllocator*) override;

  gl::SharedSurface* Surf() const { return mSurf.get(); }
};

class SharedSurfaceTextureClient : public TextureClient
{
public:
  SharedSurfaceTextureClient(SharedSurfaceTextureData* aData,
                             TextureFlags aFlags,
                             ISurfaceAllocator* aAllocator);

  ~SharedSurfaceTextureClient();

  static already_AddRefed<SharedSurfaceTextureClient>
  Create(UniquePtr<gl::SharedSurface> surf, gl::SurfaceFactory* factory,
         ISurfaceAllocator* aAllocator, TextureFlags aFlags);

  virtual void SetReleaseFenceHandle(const FenceHandle& aReleaseFenceHandle) override;

  virtual FenceHandle GetAndResetReleaseFenceHandle() override;

  virtual void SetAcquireFenceHandle(const FenceHandle& aAcquireFenceHandle) override;

  virtual const FenceHandle& GetAcquireFenceHandle() const override;

  gl::SharedSurface* Surf() const {
    return static_cast<const SharedSurfaceTextureData*>(GetInternalData())->Surf();
  }
};

} // namespace layers
} // namespace mozilla

#endif // MOZILLA_GFX_TEXTURECLIENT_SHAREDSURFACE_H
