src/content/browser/aura/browser_compositor_output_surface_proxy.h

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