1// Copyright 2014 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_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_OUTPUT_SURFACE_PROXY_H_
6#define CONTENT_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_OUTPUT_SURFACE_PROXY_H_
7
8#include "base/id_map.h"
9#include "base/memory/ref_counted.h"
10#include "base/time/time.h"
11#include "content/common/content_export.h"
12
13namespace base { class SingleThreadTaskRunner; }
14
15namespace IPC { class Message; }
16
17namespace content {
18class BrowserCompositorOutputSurface;
19
20// Directs vsync updates to the appropriate BrowserCompositorOutputSurface.
21class CONTENT_EXPORT BrowserCompositorOutputSurfaceProxy
22    : public base::RefCountedThreadSafe<BrowserCompositorOutputSurfaceProxy> {
23 public:
24  BrowserCompositorOutputSurfaceProxy(
25      IDMap<BrowserCompositorOutputSurface>* surface_map);
26
27  // Call this before each OutputSurface is created to ensure that the
28  // proxy is connected to the current host.
29  void ConnectToGpuProcessHost(
30      base::SingleThreadTaskRunner* compositor_thread_task_runner);
31
32 private:
33  friend class base::RefCountedThreadSafe<BrowserCompositorOutputSurfaceProxy>;
34  friend class SoftwareBrowserCompositorOutputSurface;
35  ~BrowserCompositorOutputSurfaceProxy();
36
37  void OnMessageReceivedOnCompositorThread(const IPC::Message& message);
38
39  void OnUpdateVSyncParametersOnCompositorThread(int surface_id,
40                                                 base::TimeTicks timebase,
41                                                 base::TimeDelta interval);
42
43  IDMap<BrowserCompositorOutputSurface>* surface_map_;
44  int connected_to_gpu_process_host_id_;
45
46  DISALLOW_COPY_AND_ASSIGN(BrowserCompositorOutputSurfaceProxy);
47};
48
49}  // namespace content
50
51#endif  // CONTENT_BROWSER_COMPOSITOR_BROWSER_COMPOSITOR_OUTPUT_SURFACE_PROXY_H_
52