content/renderer/gpu/compositor_external_begin_frame_source.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/renderer/gpu/compositor_external_begin_frame_source.h"
   6
   7 #include "content/common/view_messages.h"
   8 #include "ipc/ipc_sync_channel.h"
   9 #include "ipc/ipc_sync_message_filter.h"
  10
  11 namespace content {
  12
  13 CompositorExternalBeginFrameSource::CompositorExternalBeginFrameSource(
  14     CompositorForwardingMessageFilter* filter,
  15     IPC::SyncMessageFilter* sync_message_filter,
  16     int routing_id)
  17     : begin_frame_source_filter_(filter),
  18       message_sender_(sync_message_filter),
  19       routing_id_(routing_id) {
  20   DCHECK(begin_frame_source_filter_.get());
  21   DCHECK(message_sender_.get());
  22   DetachFromThread();
  23 }
  24
  25 CompositorExternalBeginFrameSource::~CompositorExternalBeginFrameSource() {
  26   DCHECK(CalledOnValidThread());
  27   if (begin_frame_source_proxy_.get()) {
  28     begin_frame_source_proxy_->ClearBeginFrameSource();
  29     begin_frame_source_filter_->RemoveHandlerOnCompositorThread(
  30                                     routing_id_,
  31                                     begin_frame_source_filter_handler_);
  32   }
  33 }
  34
  35 void CompositorExternalBeginFrameSource::OnNeedsBeginFramesChange(
  36     bool needs_begin_frames) {
  37   DCHECK(CalledOnValidThread());
  38   Send(new ViewHostMsg_SetNeedsBeginFrames(routing_id_, needs_begin_frames));
  39 }
  40
  41 void CompositorExternalBeginFrameSource::SetClientReady() {
  42   DCHECK(CalledOnValidThread());
  43   DCHECK(!begin_frame_source_proxy_.get());
  44   begin_frame_source_proxy_ =
  45       new CompositorExternalBeginFrameSourceProxy(this);
  46   begin_frame_source_filter_handler_ = base::Bind(
  47       &CompositorExternalBeginFrameSourceProxy::OnMessageReceived,
  48       begin_frame_source_proxy_);
  49   begin_frame_source_filter_->AddHandlerOnCompositorThread(
  50       routing_id_,
  51       begin_frame_source_filter_handler_);
  52 }
  53
  54 void CompositorExternalBeginFrameSource::OnMessageReceived(
  55     const IPC::Message& message) {
  56   DCHECK(CalledOnValidThread());
  57   DCHECK(begin_frame_source_proxy_.get());
  58   IPC_BEGIN_MESSAGE_MAP(CompositorExternalBeginFrameSource, message)
  59     IPC_MESSAGE_HANDLER(ViewMsg_BeginFrame, OnBeginFrame)
  60   IPC_END_MESSAGE_MAP();
  61 }
  62
  63 void CompositorExternalBeginFrameSource::OnBeginFrame(
  64   const cc::BeginFrameArgs& args) {
  65   DCHECK(CalledOnValidThread());
  66   CallOnBeginFrame(args);
  67 }
  68
  69 bool CompositorExternalBeginFrameSource::Send(IPC::Message* message) {
  70   return message_sender_->Send(message);
  71 }
  72
  73 }  // namespace content