SSRC and RSID may only refer to one sink each in RtpDemuxer

webrtc/call/flexfec_receive_stream_impl.cc

 /*
  *  Copyright (c) 2016 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 140 matching lines @@
   // |receiver_| as the RtpPacketSinkInterface for this stream.
   // TODO(nisse): Passing |this| from the constructor to the RtpDemuxer, before
   // the object is fully initialized, is risky. But it works in this case
   // because locking in our caller, Call::CreateFlexfecReceiveStream, ensures
   // that the demuxer doesn't call OnRtpPacket before this object is fully
   // constructed. Registering |receiver_| instead of |this| would solve this
   // problem too.
   rtp_stream_receiver_ =
       receiver_controller->CreateReceiver(config_.remote_ssrc, this);
   for (uint32_t ssrc : config.protected_media_ssrcs)
+    // TODO(eladalon): Make sure FlexFec no longer requires this, then rebase

[eladalon, 2017/07/06 16:44:32]

The CL that remove this has been put up for review -
https://codereview.webrtc.org/2974453002/diff/1/webrtc/call/flexfec_receive_s...
I'll rebase this CL after that CL has gone through the review process. For now,
please just ignore this TODO.

+    // this CL on top of that.
     receiver_controller->AddSink(ssrc, this);
 }
 
 FlexfecReceiveStreamImpl::~FlexfecReceiveStreamImpl() {
   LOG(LS_INFO) << "~FlexfecReceiveStreamImpl: " << config_.ToString();
   Stop();
   process_thread_->DeRegisterModule(rtp_rtcp_.get());
 }
 
 void FlexfecReceiveStreamImpl::OnRtpPacket(const RtpPacketReceived& packet) {
@@ skipping 29 matching lines @@
   started_ = false;
 }
 
 // TODO(brandtr): Implement this member function when we have designed the
 // stats for FlexFEC.
 FlexfecReceiveStreamImpl::Stats FlexfecReceiveStreamImpl::GetStats() const {
   return FlexfecReceiveStream::Stats();
 }
 
 }  // namespace webrtc