start/stop the source of the capturer when 1st audiotrack/last audiotrack is added/removed

content/renderer/media/mock_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/mock_media_stream_dependency_factory.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "content/renderer/media/mock_peer_connection_impl.h"
+#include "content/renderer/media/webrtc_audio_capturer.h"
+#include "content/renderer/media/webrtc_local_audio_track.h"
 #include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
 #include "third_party/libjingle/source/talk/base/scoped_ref_ptr.h"
 #include "third_party/libjingle/source/talk/media/base/videocapturer.h"
 
 using webrtc::AudioSourceInterface;
 using webrtc::AudioTrackInterface;
 using webrtc::AudioTrackVector;
 using webrtc::IceCandidateCollection;
 using webrtc::IceCandidateInterface;
 using webrtc::MediaStreamInterface;
@@ skipping 249 matching lines @@
 
 void MockLocalVideoTrack::UnregisterObserver(ObserverInterface* observer) {
   DCHECK(observer_ == observer);
   observer_ = NULL;
 }
 
 VideoSourceInterface* MockLocalVideoTrack::GetSource() const {
   return source_.get();
 }
 
-std::string MockLocalAudioTrack::kind() const {
-  NOTIMPLEMENTED();
-  return std::string();
-}
-
-std::string MockLocalAudioTrack::id() const { return id_; }
-
-bool MockLocalAudioTrack::enabled() const { return enabled_; }
-
-MockLocalAudioTrack::TrackState MockLocalAudioTrack::state() const {
-  return state_;
-}
-
-bool MockLocalAudioTrack::set_enabled(bool enable) {
-  enabled_ = enable;
-  return true;
-}
-
-bool MockLocalAudioTrack::set_state(TrackState new_state) {
-  state_ = new_state;
-  if (observer_)
-    observer_->OnChanged();
-  return true;
-}
-
-void MockLocalAudioTrack::RegisterObserver(ObserverInterface* observer) {
-  observer_ = observer;
-}
-
-void MockLocalAudioTrack::UnregisterObserver(ObserverInterface* observer) {
-  DCHECK(observer_ == observer);
-  observer_ = NULL;
-}
-
-AudioSourceInterface* MockLocalAudioTrack::GetSource() const {
-  NOTIMPLEMENTED();
-  return NULL;
-}
-
 class MockSessionDescription : public SessionDescriptionInterface {
  public:
   MockSessionDescription(const std::string& type,
                          const std::string& sdp)
       : type_(type),
         sdp_(sdp) {
   }
   virtual ~MockSessionDescription() {}
   virtual cricket::SessionDescription* description() OVERRIDE {
     NOTIMPLEMENTED();
@@ skipping 155 matching lines @@
   source->SetVideoCapturer(capturer);
 
   return new talk_base::RefCountedObject<MockLocalVideoTrack>(id, source);
 }
 
 scoped_refptr<webrtc::AudioTrackInterface>
 MockMediaStreamDependencyFactory::CreateLocalAudioTrack(
     const std::string& id,
     webrtc::AudioSourceInterface* source) {
   DCHECK(mock_pc_factory_created_);
-  scoped_refptr<webrtc::AudioTrackInterface> track(
-      new talk_base::RefCountedObject<MockLocalAudioTrack>(id));
-  return track;
+  scoped_refptr<WebRtcAudioCapturer> capturer(
+      WebRtcAudioCapturer::CreateCapturer());
+  return WebRtcLocalAudioTrack::Create(id, capturer, source);
 }
 
 SessionDescriptionInterface*
 MockMediaStreamDependencyFactory::CreateSessionDescription(
     const std::string& type,
     const std::string& sdp,
     webrtc::SdpParseError* error) {
   return new MockSessionDescription(type, sdp);
 }
 
 webrtc::IceCandidateInterface*
 MockMediaStreamDependencyFactory::CreateIceCandidate(
     const std::string& sdp_mid,
     int sdp_mline_index,
     const std::string& sdp) {
   return new MockIceCandidate(sdp_mid, sdp_mline_index, sdp);
 }
 
 }  // namespace content