// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_ANDROID_HARDWARE_BUFFER_H_
#define GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_ANDROID_HARDWARE_BUFFER_H_

#include <memory>
#include <utility>

#include "base/containers/flat_map.h"
#include "base/synchronization/lock.h"
#include "gpu/command_buffer/service/image_factory.h"
#include "gpu/ipc/service/gpu_ipc_service_export.h"
#include "gpu/ipc/service/gpu_memory_buffer_factory.h"

namespace gl {
class GLImage;
}

namespace gpu {
class GpuMemoryBufferImplAndroidHardwareBuffer;

class GPU_IPC_SERVICE_EXPORT GpuMemoryBufferFactoryAndroidHardwareBuffer
    : public GpuMemoryBufferFactory,
      public ImageFactory {
 public:
  GpuMemoryBufferFactoryAndroidHardwareBuffer();
  ~GpuMemoryBufferFactoryAndroidHardwareBuffer() override;

  // Overridden from GpuMemoryBufferFactory:
  gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
      gfx::GpuMemoryBufferId id,
      const gfx::Size& size,
      gfx::BufferFormat format,
      gfx::BufferUsage usage,
      int client_id,
      SurfaceHandle surface_handle) override;
  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
                              int client_id) override;
  ImageFactory* AsImageFactory() override;

  // Overridden from ImageFactory:
  // TODO(khushalsagar): Add support for anonymous images.
  scoped_refptr<gl::GLImage> CreateImageForGpuMemoryBuffer(
      gfx::GpuMemoryBufferHandle handle,
      const gfx::Size& size,
      gfx::BufferFormat format,
      int client_id,
      SurfaceHandle surface_handle) override;
  unsigned RequiredTextureType() override;

 private:
  using BufferMapKey = std::pair<gfx::GpuMemoryBufferId, int>;
  using BufferMap =
      base::flat_map<BufferMapKey,
                     std::unique_ptr<GpuMemoryBufferImplAndroidHardwareBuffer>>;

  base::Lock lock_;
  BufferMap buffer_map_ GUARDED_BY(lock_);

  DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferFactoryAndroidHardwareBuffer);
};

}  // namespace gpu

#endif  // GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_ANDROID_HARDWARE_BUFFER_H_