content/browser/compositor/browser_compositor_output_surface_proxy.cc

   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 #include "content/browser/compositor/browser_compositor_output_surface_proxy.h"
   6
   7 #include "base/bind.h"
   8 #include "content/browser/compositor/browser_compositor_output_surface.h"
   9 #include "content/browser/gpu/browser_gpu_channel_host_factory.h"
  10 #include "content/common/gpu/gpu_messages.h"
  11
  12 namespace content {
  13
  14 BrowserCompositorOutputSurfaceProxy::BrowserCompositorOutputSurfaceProxy(
  15     IDMap<BrowserCompositorOutputSurface>* surface_map)
  16     : surface_map_(surface_map),
  17       connected_to_gpu_process_host_id_(0) {}
  18
  19 BrowserCompositorOutputSurfaceProxy::~BrowserCompositorOutputSurfaceProxy() {}
  20
  21 void BrowserCompositorOutputSurfaceProxy::ConnectToGpuProcessHost(
  22     base::SingleThreadTaskRunner* compositor_thread_task_runner) {
  23   BrowserGpuChannelHostFactory* factory =
  24       BrowserGpuChannelHostFactory::instance();
  25
  26   int gpu_process_host_id = factory->GpuProcessHostId();
  27   if (connected_to_gpu_process_host_id_ == gpu_process_host_id)
  28     return;
  29
  30   const uint32 kMessagesToFilter[] = { GpuHostMsg_UpdateVSyncParameters::ID };
  31   factory->SetHandlerForControlMessages(
  32       kMessagesToFilter,
  33       arraysize(kMessagesToFilter),
  34       base::Bind(&BrowserCompositorOutputSurfaceProxy::
  35                      OnMessageReceivedOnCompositorThread,
  36                  this),
  37       compositor_thread_task_runner);
  38   connected_to_gpu_process_host_id_ = gpu_process_host_id;
  39 }
  40
  41 void BrowserCompositorOutputSurfaceProxy::OnMessageReceivedOnCompositorThread(
  42     const IPC::Message& message) {
  43   IPC_BEGIN_MESSAGE_MAP(BrowserCompositorOutputSurfaceProxy, message)
  44       IPC_MESSAGE_HANDLER(GpuHostMsg_UpdateVSyncParameters,
  45                           OnUpdateVSyncParametersOnCompositorThread);
  46   IPC_END_MESSAGE_MAP()
  47 }
  48
  49 void
  50 BrowserCompositorOutputSurfaceProxy::OnUpdateVSyncParametersOnCompositorThread(
  51     int surface_id,
  52     base::TimeTicks timebase,
  53     base::TimeDelta interval) {
  54   BrowserCompositorOutputSurface* surface = surface_map_->Lookup(surface_id);
  55   if (surface)
  56     surface->OnUpdateVSyncParametersFromGpu(timebase, interval);
  57 }
  58 }  // namespace content