Integrate VDA with WebRTC.

content/renderer/media/media_stream_dependency_factory.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/media_stream_dependency_factory.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/waitable_event.h"
 #include "content/public/common/content_switches.h"
 #include "content/renderer/media/media_stream_source_extra_data.h"
 #include "content/renderer/media/rtc_media_constraints.h"
 #include "content/renderer/media/rtc_peer_connection_handler.h"
 #include "content/renderer/media/rtc_video_capturer.h"
+#include "content/renderer/media/rtc_video_decoder_factory.h"
 #include "content/renderer/media/video_capture_impl_manager.h"
 #include "content/renderer/media/webaudio_capturer_source.h"
 #include "content/renderer/media/webrtc_audio_device_impl.h"
 #include "content/renderer/media/webrtc_local_audio_track.h"
 #include "content/renderer/media/webrtc_logging_initializer.h"
 #include "content/renderer/media/webrtc_uma_histograms.h"
 #include "content/renderer/p2p/ipc_network_manager.h"
 #include "content/renderer/p2p/ipc_socket_factory.h"
 #include "content/renderer/p2p/port_allocator.h"
 #include "content/renderer/render_thread_impl.h"
 #include "jingle/glue/thread_wrapper.h"
+#include "media/filters/gpu_video_decoder.h"
 #include "third_party/WebKit/public/platform/WebMediaConstraints.h"
 #include "third_party/WebKit/public/platform/WebMediaStream.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 
 #if defined(USE_OPENSSL)
 #include "third_party/libjingle/source/talk/base/ssladapter.h"
@@ skipping 439 matching lines @@
       native_stream->RemoveTrack(native_stream->FindAudioTrack(track_id)) :
       native_stream->RemoveTrack(native_stream->FindVideoTrack(track_id));
 }
 
 bool MediaStreamDependencyFactory::CreatePeerConnectionFactory() {
   DVLOG(1) << "MediaStreamDependencyFactory::CreatePeerConnectionFactory()";
   if (!pc_factory_.get()) {
     DCHECK(!audio_device_.get());
     audio_device_ = new WebRtcAudioDeviceImpl();
 
-    cricket::WebRtcVideoDecoderFactory* decoder_factory = NULL;
+    scoped_ptr<cricket::WebRtcVideoDecoderFactory> decoder_factory;
 #if defined(GOOGLE_TV)
     // PeerConnectionFactory will hold the ownership of this
     // VideoDecoderFactory.
-    decoder_factory = decoder_factory_tv_ = new RTCVideoDecoderFactoryTv;
+    decoder_factory.reset(decoder_factory_tv_ = new RTCVideoDecoderFactoryTv);
 #endif
+    const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+    if (cmd_line->HasSwitch(switches::kEnableWebRTCHWDecoding)) {
+      scoped_refptr<media::GpuVideoDecoder::Factories> gpu_factories =
+          RenderThreadImpl::current()->GetGpuFactories();
+      if (gpu_factories.get() != NULL)

[Ami GONE FROM CHROMIUM, 2013/06/19 18:28:58]

Is the .get() really required?  

[wuchengli, 2013/06/20 07:27:04]

Some people are changing refptr to get() universally then bool conversion later.
See http://crbug.com/110610

+        decoder_factory.reset(new RTCVideoDecoderFactory(gpu_factories));
+    }
 
     scoped_refptr<webrtc::PeerConnectionFactoryInterface> factory(
         webrtc::CreatePeerConnectionFactory(worker_thread_,
                                             signaling_thread_,
                                             audio_device_.get(),
                                             NULL,
-                                            decoder_factory));
+                                            decoder_factory.release()));
     if (factory.get())
       pc_factory_ = factory;
     else
       audio_device_ = NULL;
   }
   return pc_factory_.get() != NULL;
 }
 
 bool MediaStreamDependencyFactory::PeerConnectionFactoryCreated() {
   return pc_factory_.get() != NULL;
@@ skipping 285 matching lines @@
       // processed before returning. We wait for the above task to finish before
       // letting the the function continue to avoid any potential race issues.
       chrome_worker_thread_.Stop();
     } else {
       NOTREACHED() << "Worker thread not running.";
     }
   }
 }
 
 }  // namespace content