Integrate VDA with WebRTC.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 28acc8b0812cc6cfb77aa4c705e3ef8520e7f744..0362a828555ed70f1bb3ce35cc8a74c6ea25ecbb 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -62,6 +62,7 @@
 #include "content/renderer/media/media_stream_center.h"
 #include "content/renderer/media/media_stream_dependency_factory.h"
 #include "content/renderer/media/peer_connection_tracker.h"
+#include "content/renderer/media/renderer_gpu_video_decoder_factories.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
 #include "content/renderer/media/video_capture_message_filter.h"
 #include "content/renderer/memory_benchmarking_extension.h"
@@ -971,6 +972,26 @@ void RenderThreadImpl::PostponeIdleNotification() {
   idle_notifications_to_skip_ = 2;
 }
 
+RendererGpuVideoDecoderFactories* RenderThreadImpl::GetGpuFactories() {
+  const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+  RendererGpuVideoDecoderFactories* gpu_factories = NULL;
+  WebGraphicsContext3DCommandBufferImpl* context3d = NULL;
+  if (!cmd_line->HasSwitch(switches::kDisableAcceleratedVideoDecode))
+    context3d = RenderThreadImpl::current()->GetGpuVDAContext3D();
+  if (context3d) {
+    scoped_refptr<base::MessageLoopProxy> factories_loop =
+        RenderThreadImpl::current()->compositor_message_loop_proxy();
+    if (!factories_loop)
+      factories_loop = base::MessageLoopProxy::current();
+    GpuChannelHost* gpu_channel_host =
+        RenderThreadImpl::current()->EstablishGpuChannelSync(
+            CAUSE_FOR_GPU_LAUNCH_VIDEODECODEACCELERATOR_INITIALIZE);
+    gpu_factories = new RendererGpuVideoDecoderFactories(
+        gpu_channel_host, factories_loop, context3d);
+  }
+  return gpu_factories;
+}
+
 /* static */
 void RenderThreadImpl::OnGpuVDAContextLoss() {
   RenderThreadImpl* self = RenderThreadImpl::current();
@@ -1284,9 +1305,14 @@ WebKit::WebMediaStreamCenter* RenderThreadImpl::CreateMediaStreamCenter(
 MediaStreamDependencyFactory*
 RenderThreadImpl::GetMediaStreamDependencyFactory() {
 #if defined(ENABLE_WEBRTC)
+  const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+  scoped_refptr<media::GpuVideoDecoder::Factories> gpu_factories;
+  if (cmd_line->HasSwitch(switches::kEnableWebRTCHWDecoding)) {
+    gpu_factories = GetGpuFactories();
+  }
   if (!media_stream_factory_) {
     media_stream_factory_.reset(new MediaStreamDependencyFactory(
-        vc_manager_, p2p_socket_dispatcher_));
+        vc_manager_, gpu_factories, p2p_socket_dispatcher_));
   }
 #endif
   return media_stream_factory_.get();