content/browser/compositor/browser_compositor_output_surface_proxy.h

   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
  13 namespace base { class SingleThreadTaskRunner; }
  14
  15 namespace IPC { class Message; }
  16
  17 namespace content {
  18 class BrowserCompositorOutputSurface;
  19
  20 // Directs vsync updates to the appropriate BrowserCompositorOutputSurface.
  21 class 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_