WebRtcVoiceMediaChannel::AddRecvStream: Don't call SetRecPayloadType

webrtc/modules/audio_coding/include/audio_coding_module.h

 /*
  *  Copyright (c) 2012 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 467 matching lines @@
 
   ///////////////////////////////////////////////////////////////////////////
   // int32_t PlayoutFrequency()
   // Get sampling frequency of audio played out.
   //
   // Return value:
   //   the sampling frequency in Hertz.
   //
   virtual int32_t PlayoutFrequency() const = 0;
 
+  // Replace any existing decoders with the given payload type -> decoder map.

[the sun, 2017/03/14 20:07:00]

nit: how about renaming the argument so that the comment can be removed?

[kwiberg-webrtc, 2017/03/16 10:24:12]

payload_type_to_decoder_format_map? That's a mouthful... and not as easy to read
as the comment because _ is the only available punctuation.

+  virtual void SetReceiveCodecs(
+      const std::map<int, SdpAudioFormat>& codecs) = 0;
+
   // Registers a decoder for the given payload type. Returns true iff
   // successful.
   virtual bool RegisterReceiveCodec(int rtp_payload_type,
                                     const SdpAudioFormat& audio_format) = 0;
 
   ///////////////////////////////////////////////////////////////////////////
   // int32_t RegisterReceiveCodec()
   // Register possible decoders, can be called multiple times for
   // codecs, CNG-NB, CNG-WB, CNG-SWB, AVT and RED.
   //
@@ skipping 319 matching lines @@
   virtual std::vector<uint16_t> GetNackList(
       int64_t round_trip_time_ms) const = 0;
 
   virtual void GetDecodingCallStatistics(
       AudioDecodingCallStats* call_stats) const = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_INCLUDE_AUDIO_CODING_MODULE_H_