1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
6#define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
7
8#include <IOSurface/IOSurfaceAPI.h>
9
10#include "base/mac/scoped_cftyperef.h"
11#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
12
13namespace content {
14
15// Implementation of GPU memory buffer based on IO surfaces.
16class GpuMemoryBufferImplIOSurface : public GpuMemoryBufferImpl {
17 public:
18  static void Create(const gfx::Size& size,
19                     unsigned internalformat,
20                     unsigned usage,
21                     int client_id,
22                     const CreationCallback& callback);
23
24  static void AllocateForChildProcess(const gfx::Size& size,
25                                      unsigned internalformat,
26                                      unsigned usage,
27                                      int child_client_id,
28                                      const AllocationCallback& callback);
29
30  static scoped_ptr<GpuMemoryBufferImpl> CreateFromHandle(
31      const gfx::GpuMemoryBufferHandle& handle,
32      const gfx::Size& size,
33      unsigned internalformat,
34      const DestructionCallback& callback);
35
36  static bool IsFormatSupported(unsigned internalformat);
37  static bool IsUsageSupported(unsigned usage);
38  static bool IsConfigurationSupported(unsigned internalformat, unsigned usage);
39  static uint32 PixelFormat(unsigned internalformat);
40
41  // Overridden from gfx::GpuMemoryBuffer:
42  virtual void* Map() OVERRIDE;
43  virtual void Unmap() OVERRIDE;
44  virtual uint32 GetStride() const OVERRIDE;
45  virtual gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE;
46
47 private:
48  GpuMemoryBufferImplIOSurface(const gfx::Size& size,
49                               unsigned internalformat,
50                               const DestructionCallback& callback,
51                               IOSurfaceRef io_surface);
52  virtual ~GpuMemoryBufferImplIOSurface();
53
54  base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
55
56  DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplIOSurface);
57};
58
59}  // namespace content
60
61#endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
62