Wire-up audio BWE with overhead.

webrtc/voice_engine/channel.cc

 /*
  *  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 922 matching lines @@
   AudioCodingModule::Config acm_config(config.acm_config);
   acm_config.id = VoEModuleId(instanceId, channelId);
   acm_config.neteq_config.enable_muted_state = true;
   audio_coding_.reset(AudioCodingModule::Create(acm_config));
 
   _outputAudioLevel.Clear();
 
   RtpRtcp::Configuration configuration;
   configuration.audio = true;
   configuration.outgoing_transport = this;
+  configuration.overhead_observer = this;
   configuration.receive_statistics = rtp_receive_statistics_.get();
   configuration.bandwidth_callback = rtcp_observer_.get();
   if (pacing_enabled_) {
     configuration.paced_sender = rtp_packet_sender_proxy_.get();
     configuration.transport_sequence_number_allocator =
         seq_num_allocator_proxy_.get();
     configuration.transport_feedback_callback = feedback_observer_proxy_.get();
   }
   configuration.event_log = &(*event_log_proxy_);
   configuration.rtt_stats = &(*rtcp_rtt_stats_proxy_);
@@ skipping 1921 matching lines @@
 }
 
 void Channel::SetRtcpRttStats(RtcpRttStats* rtcp_rtt_stats) {
   rtcp_rtt_stats_proxy_->SetRtcpRttStats(rtcp_rtt_stats);
 }
 
 void Channel::SetTransportOverhead(int transport_overhead_per_packet) {
   _rtpRtcpModule->SetTransportOverhead(transport_overhead_per_packet);
 }
 
+void Channel::OnOverheadChanged(size_t overhead_bytes_per_packet) {
+  audio_coding_->ModifyEncoder([&](std::unique_ptr<AudioEncoder>* encoder) {
+    if (*encoder) {
+      (*encoder)->OnReceivedOverhead(overhead_bytes_per_packet);
+    }
+  });
+}
+
 int Channel::RegisterExternalMediaProcessing(ProcessingTypes type,
                                              VoEMediaProcess& processObject) {
   WEBRTC_TRACE(kTraceInfo, kTraceVoice, VoEId(_instanceId, _channelId),
                "Channel::RegisterExternalMediaProcessing()");
 
   rtc::CritScope cs(&_callbackCritSect);
 
   if (kPlaybackPerChannel == type) {
     if (_outputExternalMediaCallbackPtr) {
       _engineStatisticsPtr->SetLastError(
@@ skipping 385 matching lines @@
   int64_t min_rtt = 0;
   if (_rtpRtcpModule->RTT(remoteSSRC, &rtt, &avg_rtt, &min_rtt, &max_rtt) !=
       0) {
     return 0;
   }
   return rtt;
 }
 
 }  // namespace voe
 }  // namespace webrtc