Support for two audio codec lists down into WebRtcVoiceEngine.

webrtc/pc/channelmanager.h

 /*
  *  Copyright 2004 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 43 matching lines @@
   bool set_worker_thread(rtc::Thread* thread) {
     if (initialized_) return false;
     worker_thread_ = thread;
     return true;
   }
 
   MediaEngineInterface* media_engine() { return media_engine_.get(); }
 
   // Retrieves the list of supported audio & video codec types.
   // Can be called before starting the media engine.
-  void GetSupportedAudioCodecs(std::vector<AudioCodec>* codecs) const;
+  void GetSupportedAudioSendCodecs(std::vector<AudioCodec>* codecs) const;

[ossu, 2016/05/26 14:18:50]

Is this an interface change that needs backwards compatibility?

[pthatcher1, 2016/05/31 18:26:48]

This is only used by MediaSessionDescriptionFactory, so as long as you change
MediaSessionDescriptionFactory, which you do, then we should be fine.

[ossu, 2016/06/01 08:34:12]

Acknowledged.

+  void GetSupportedAudioReceiveCodecs(std::vector<AudioCodec>* codecs) const;
   void GetSupportedAudioRtpHeaderExtensions(RtpHeaderExtensions* ext) const;
   void GetSupportedVideoCodecs(std::vector<VideoCodec>* codecs) const;
   void GetSupportedVideoRtpHeaderExtensions(RtpHeaderExtensions* ext) const;
   void GetSupportedDataCodecs(std::vector<DataCodec>* codecs) const;
 
   // Indicates whether the media engine is started.
   bool initialized() const { return initialized_; }
   // Starts up the media engine.
   bool Init();
   // Shuts down the media engine.
@@ skipping 99 matching lines @@
 
   int audio_output_volume_;
   bool enable_rtx_;
 
   bool capturing_;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_PC_CHANNELMANAGER_H_