Change SetOutputScaling to set a single level, not left/right levels.

talk/session/media/channel.h

 /*
  * libjingle
  * Copyright 2004 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 347 matching lines @@
   // TODO(ronghuawu): Replace PressDTMF with InsertDtmf.
   bool PressDTMF(int digit, bool playout);
   // Returns if the telephone-event has been negotiated.
   bool CanInsertDtmf();
   // Send and/or play a DTMF |event| according to the |flags|.
   // The DTMF out-of-band signal will be used on sending.
   // The |ssrc| should be either 0 or a valid send stream ssrc.
   // The valid value for the |event| are 0 which corresponding to DTMF
   // event 0-9, *, #, A-D.
   bool InsertDtmf(uint32_t ssrc, int event_code, int duration, int flags);
-  bool SetOutputScaling(uint32_t ssrc, double left, double right);
+  bool SetOutputScaling(uint32_t ssrc, double volume);

[pthatcher1, 2015/10/08 18:37:50]

Can this also (SetOutputVolume)?

[the sun, 2015/10/09 08:01:21]

Done.

   // Get statistics about the current media session.
   bool GetStats(VoiceMediaInfo* stats);
 
   // Monitoring functions
   sigslot::signal2<VoiceChannel*, const std::vector<ConnectionInfo>&>
       SignalConnectionMonitor;
 
   void StartMediaMonitor(int cms);
   void StopMediaMonitor();
   sigslot::signal2<VoiceChannel*, const VoiceMediaInfo&> SignalMediaMonitor;
@@ skipping 16 matching lines @@
   virtual void ChangeState();
   virtual const ContentInfo* GetFirstContent(const SessionDescription* sdesc);
   virtual bool SetLocalContent_w(const MediaContentDescription* content,
                                  ContentAction action,
                                  std::string* error_desc);
   virtual bool SetRemoteContent_w(const MediaContentDescription* content,
                                   ContentAction action,
                                   std::string* error_desc);
   void HandleEarlyMediaTimeout();
   bool InsertDtmf_w(uint32_t ssrc, int event, int duration, int flags);
-  bool SetOutputScaling_w(uint32_t ssrc, double left, double right);
+  bool SetOutputScaling_w(uint32_t ssrc, double volume);
   bool GetStats_w(VoiceMediaInfo* stats);
 
   virtual void OnMessage(rtc::Message* pmsg);
   virtual void GetSrtpCryptoSuiteNames(std::vector<std::string>* ciphers) const;
   virtual void OnConnectionMonitorUpdate(
       ConnectionMonitor* monitor, const std::vector<ConnectionInfo>& infos);
   virtual void OnMediaMonitorUpdate(
       VoiceMediaChannel* media_channel, const VoiceMediaInfo& info);
   void OnAudioMonitorUpdate(AudioMonitor* monitor, const AudioInfo& info);
 
@@ skipping 221 matching lines @@
   // SetSendParameters.
   DataSendParameters last_send_params_;
   // Last DataRecvParameters sent down to the media_channel() via
   // SetRecvParameters.
   DataRecvParameters last_recv_params_;
 };
 
 }  // namespace cricket
 
 #endif  // TALK_SESSION_MEDIA_CHANNEL_H_