Wire-up audio BWE with overhead.

webrtc/voice_engine/channel.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 126 matching lines @@
 
 class Channel
     : public RtpData,
       public RtpFeedback,
       public FileCallback,  // receiving notification from file player &
                             // recorder
       public Transport,
       public AudioPacketizationCallback,  // receive encoded packets from the
                                           // ACM
       public ACMVADCallback,              // receive voice activity from the ACM
-      public MixerParticipant  // supplies output mixer with audio frames
-{
+      public MixerParticipant,  // supplies output mixer with audio frames
+      public OverheadObserver {
  public:
   friend class VoERtcpObserver;
 
   enum { KNumSocketThreads = 1 };
   enum { KNumberOfSocketBuffers = 8 };
   virtual ~Channel();
   static int32_t CreateChannel(
       Channel*& channel,
       int32_t channelId,
       uint32_t instanceId,
@@ skipping 251 matching lines @@
   void set_associate_send_channel(const ChannelOwner& channel);
   // Disassociate a send channel if it was associated.
   void DisassociateSendChannel(int channel_id);
 
   // Set a RtcEventLog logging object.
   void SetRtcEventLog(RtcEventLog* event_log);
 
   void SetRtcpRttStats(RtcpRttStats* rtcp_rtt_stats);
   void SetTransportOverhead(int transport_overhead_per_packet);
 
+  // From OverheadObserver in the RTP/RTCP module

[stefan-webrtc, 2016/12/14 11:44:20]

End with "."

+  void OnOverheadChanged(size_t overhead_bytes_per_packet) override;
+
  protected:
   void OnIncomingFractionLoss(int fraction_lost);
 
  private:
   bool ReceivePacket(const uint8_t* packet,
                      size_t packet_length,
                      const RTPHeader& header,
                      bool in_order);
   bool HandleRtxPacket(const uint8_t* packet,
                        size_t packet_length,
@@ skipping 118 matching lines @@
   // TODO(ossu): Remove once GetAudioDecoderFactory() is no longer needed.
   rtc::scoped_refptr<AudioDecoderFactory> decoder_factory_;
 
   SmoothingFilterImpl bitrate_smoother_;
 };
 
 }  // namespace voe
 }  // namespace webrtc
 
 #endif  // WEBRTC_VOICE_ENGINE_CHANNEL_H_