Add a 'remote' property to MediaSourceInterface. Also adding an implementation to the relevant sour…

talk/app/webrtc/audiotrack.h

 /*
  * libjingle
  * Copyright 2011 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 10 matching lines @@
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef TALK_APP_WEBRTC_AUDIOTRACK_H_
 #define TALK_APP_WEBRTC_AUDIOTRACK_H_
 
+#include <string>
+
 #include "talk/app/webrtc/mediastreaminterface.h"
 #include "talk/app/webrtc/mediastreamtrack.h"
 #include "talk/app/webrtc/notifier.h"
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/base/scoped_ref_ptr.h"
+#include "webrtc/base/thread_checker.h"
 
 namespace webrtc {
 
-class AudioTrack : public MediaStreamTrack<AudioTrackInterface> {
+class AudioTrack : public MediaStreamTrack<AudioTrackInterface>,
+                   public ObserverInterface {
+ protected:
+  // Protected ctor to force use of factory method.
+  AudioTrack(const std::string& label,
+             const rtc::scoped_refptr<AudioSourceInterface>& source);
+  ~AudioTrack() override;
+
  public:
   static rtc::scoped_refptr<AudioTrack> Create(
-      const std::string& id, AudioSourceInterface* source);
+      const std::string& id,
+      const rtc::scoped_refptr<AudioSourceInterface>& source);
 
-  // AudioTrackInterface implementation.
-  AudioSourceInterface* GetSource() const override {
-    return audio_source_.get();
-  }
-  // TODO(xians): Implement these methods.
-  void AddSink(AudioTrackSinkInterface* sink) override {}
-  void RemoveSink(AudioTrackSinkInterface* sink) override {}
-  bool GetSignalLevel(int* level) override { return false; }
-  rtc::scoped_refptr<AudioProcessorInterface> GetAudioProcessor() override {
-    return NULL;
-  }
-  cricket::AudioRenderer* GetRenderer() override { return NULL; }
-
+ private:
   // MediaStreamTrack implementation.
   std::string kind() const override;
 
- protected:
-  AudioTrack(const std::string& label, AudioSourceInterface* audio_source);
+  // AudioTrackInterface implementation.
+  AudioSourceInterface* GetSource() const override;
+
+  void AddSink(AudioTrackSinkInterface* sink) override;
+  void RemoveSink(AudioTrackSinkInterface* sink) override;
+
+  // ObserverInterface implementation.
+  void OnChanged() override;
 
  private:
-  rtc::scoped_refptr<AudioSourceInterface> audio_source_;
+  const rtc::scoped_refptr<AudioSourceInterface> audio_source_;
+  rtc::ThreadChecker thread_checker_;
+  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(AudioTrack);
 };
 
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_AUDIOTRACK_H_