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      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
     59