1// Copyright (c) 2012 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 PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
6#define PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
7
8#include "base/callback.h"
9#include "base/containers/hash_tables.h"
10#include "base/memory/scoped_ptr.h"
11#include "gpu/command_buffer/client/gpu_control.h"
12#include "gpu/command_buffer/common/command_buffer.h"
13#include "gpu/command_buffer/common/command_buffer_shared.h"
14#include "ppapi/proxy/ppapi_proxy_export.h"
15#include "ppapi/shared_impl/host_resource.h"
16
17namespace IPC {
18class Message;
19}
20
21namespace ppapi {
22namespace proxy {
23
24class ProxyChannel;
25class SerializedHandle;
26
27class PPAPI_PROXY_EXPORT PpapiCommandBufferProxy : public gpu::CommandBuffer,
28                                                   public gpu::GpuControl {
29 public:
30  PpapiCommandBufferProxy(const HostResource& resource,
31                          ProxyChannel* channel,
32                          const SerializedHandle& shared_state);
33  virtual ~PpapiCommandBufferProxy();
34
35  // gpu::CommandBuffer implementation:
36  virtual bool Initialize() OVERRIDE;
37  virtual State GetLastState() OVERRIDE;
38  virtual int32 GetLastToken() OVERRIDE;
39  virtual void Flush(int32 put_offset) OVERRIDE;
40  virtual void WaitForTokenInRange(int32 start, int32 end) OVERRIDE;
41  virtual void WaitForGetOffsetInRange(int32 start, int32 end) OVERRIDE;
42  virtual void SetGetBuffer(int32 transfer_buffer_id) OVERRIDE;
43  virtual scoped_refptr<gpu::Buffer> CreateTransferBuffer(size_t size,
44                                                          int32* id) OVERRIDE;
45  virtual void DestroyTransferBuffer(int32 id) OVERRIDE;
46
47  // gpu::GpuControl implementation:
48  virtual gpu::Capabilities GetCapabilities() OVERRIDE;
49  virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(size_t width,
50                                                      size_t height,
51                                                      unsigned internalformat,
52                                                      unsigned usage,
53                                                      int32* id) OVERRIDE;
54  virtual void DestroyGpuMemoryBuffer(int32 id) OVERRIDE;
55  virtual uint32 InsertSyncPoint() OVERRIDE;
56  virtual uint32 InsertFutureSyncPoint() OVERRIDE;
57  virtual void RetireSyncPoint(uint32 sync_point) OVERRIDE;
58  virtual void SignalSyncPoint(uint32 sync_point,
59                               const base::Closure& callback) OVERRIDE;
60  virtual void SignalQuery(uint32 query,
61                           const base::Closure& callback) OVERRIDE;
62  virtual void SetSurfaceVisible(bool visible) OVERRIDE;
63  virtual void Echo(const base::Closure& callback) OVERRIDE;
64  virtual uint32 CreateStreamTexture(uint32 texture_id) OVERRIDE;
65
66 private:
67  bool Send(IPC::Message* msg);
68  void UpdateState(const gpu::CommandBuffer::State& state, bool success);
69
70  // Try to read an updated copy of the state from shared memory.
71  void TryUpdateState();
72
73  // The shared memory area used to update state.
74  gpu::CommandBufferSharedState* shared_state() const;
75
76  State last_state_;
77  scoped_ptr<base::SharedMemory> shared_state_shm_;
78
79  HostResource resource_;
80  ProxyChannel* channel_;
81
82  base::Closure channel_error_callback_;
83
84  DISALLOW_COPY_AND_ASSIGN(PpapiCommandBufferProxy);
85};
86
87}  // namespace proxy
88}  // namespace ppapi
89
90#endif // PPAPI_PROXY_COMMAND_BUFFER_PROXY_H_
91