Make Call::OnRecoveredPacket parse RTP header and call OnRtpPacket.

webrtc/modules/rtp_rtcp/source/rtp_packet_received.h

 /*
  *  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.
  */
 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_PACKET_RECEIVED_H_
@@ skipping 19 matching lines @@
   // Time in local time base as close as it can to packet arrived on the
   // network.
   int64_t arrival_time_ms() const { return arrival_time_ms_; }
   void set_arrival_time_ms(int64_t time) { arrival_time_ms_ = time; }
 
   // Estimated from Timestamp() using rtcp Sender Reports.
   NtpTime capture_ntp_time() const { return capture_time_; }
   void set_capture_ntp_time(NtpTime time) { capture_time_ = time; }
 
   // Flag if packet arrived via rtx.
   bool retransmit() const { return retransmit_; }

[brandtr, 2017/02/15 12:20:50]

rename to 'retransmitted'/'set_retransmitted', to be consistent with the new
methods below.

[nisse-webrtc, 2017/02/15 13:59:14]

On the receive side, that verb doesn't seem quite right to me. *We* haven't
retransmitted anything; it's just that we received the packet as an rtx payload,
supposedly because the other end retransmitted it. 

[nisse-webrtc, 2017/05/09 12:37:56]

Danil suggested that we use only a single "recovered" flag, and use it for both
rtx and fec. So I'll delete retransmit. 

   void set_retransmit(bool value) { retransmit_ = value; }
 
+  // Flag if packet was recovered via fec.
+  bool recovered() const { return recovered_; }
+  void set_recovered(bool value) { recovered_ = value; }
+
   int payload_type_frequency() const { return payload_type_frequency_; }
   void set_payload_type_frequency(int value) {
     payload_type_frequency_ = value;
   }
 
  private:
   NtpTime capture_time_;
   int64_t arrival_time_ms_ = 0;
   int payload_type_frequency_ = 0;
   bool retransmit_ = false;
+  bool recovered_ = false;
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_PACKET_RECEIVED_H_