Protected streams report RTP messages directly to the FlexFec streams

webrtc/modules/rtp_rtcp/source/flexfec_receiver.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 41 matching lines @@
     return;
   }
   ProcessReceivedPackets();
 }
 
 FecPacketCounter FlexfecReceiver::GetPacketCounter() const {
   RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
   return packet_counter_;
 }
 
+// TODO(eladalon): Consider using packet.recovered() to avoid processing
+// recovered packets here.
 bool FlexfecReceiver::AddReceivedPacket(const RtpPacketReceived& packet) {
   RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
 
   // RTP packets with a full base header (12 bytes), but without payload,
   // could conceivably be useful in the decoding. Therefore we check
   // with a non-strict inequality here.
   RTC_DCHECK_GE(packet.size(), kRtpHeaderSize);
 
   // Demultiplex based on SSRC, and insert into erasure code decoder.
   std::unique_ptr<ReceivedPacket> received_packet(new ReceivedPacket());
@@ skipping 73 matching lines @@
           ForwardErrorCorrection::ParseSsrc(recovered_packet->pkt->data);
       LOG(LS_VERBOSE) << "Recovered media packet with SSRC: " << media_ssrc
                       << " from FlexFEC stream with SSRC: " << ssrc_ << ".";
       last_recovered_packet_ms_ = now_ms;
     }
   }
   return true;
 }
 
 }  // namespace webrtc