Update talk to 61538839.
TBR=mallinath
Review URL: https://webrtc-codereview.appspot.com/8669005
git-svn-id: http://webrtc.googlecode.com/svn/trunk@5548 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/app/webrtc/mediastreaminterface.h b/talk/app/webrtc/mediastreaminterface.h
index 96d0942..fa0572e 100644
--- a/talk/app/webrtc/mediastreaminterface.h
+++ b/talk/app/webrtc/mediastreaminterface.h
@@ -142,9 +142,24 @@
// AudioSourceInterface is a reference counted source used for AudioTracks.
// The same source can be used in multiple AudioTracks.
-// TODO(perkj): Extend this class with necessary methods to allow separate
-// sources for each audio track.
class AudioSourceInterface : public MediaSourceInterface {
+ public:
+ class AudioObserver {
+ public:
+ virtual void OnSetVolume(double volume) = 0;
+
+ protected:
+ virtual ~AudioObserver() {}
+ };
+
+ // TODO(xians): Makes all the interface pure virtual after Chrome has their
+ // implementations.
+ // Sets the volume to the source. |volume| is in the range of [0, 10].
+ virtual void SetVolume(double volume) {}
+
+ // Registers/unregisters observer to the audio source.
+ virtual void RegisterAudioObserver(AudioObserver* observer) {}
+ virtual void UnregisterAudioObserver(AudioObserver* observer) {}
};
// Interface for receiving audio data from a AudioTrack.
