Simplify {,Set}UlpfecConfig interface.

webrtc/video/rtp_stream_receiver.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 160 matching lines @@
     VideoCodec red_codec = {};
     red_codec.codecType = kVideoCodecRED;
     strncpy(red_codec.plName, "red", sizeof(red_codec.plName));
     red_codec.plType = config_.rtp.ulpfec.red_payload_type;
     RTC_CHECK(SetReceiveCodec(red_codec));
     if (config_.rtp.ulpfec.red_rtx_payload_type != -1) {
       rtp_payload_registry_.SetRtxPayloadType(
           config_.rtp.ulpfec.red_rtx_payload_type,
           config_.rtp.ulpfec.red_payload_type);
     }
-
-    rtp_rtcp_->SetUlpfecConfig(true, config_.rtp.ulpfec.red_payload_type,
+    // TODO(brandtr): It doesn't seem that |rtp_rtcp_| is used for sending any
+    // RTP packets. Investigate if this is the case, and if so, remove this
+    // call, since there are no RTP packets to protect with RED+ULPFEC.
+    rtp_rtcp_->SetUlpfecConfig(config_.rtp.ulpfec.red_payload_type,
                                config_.rtp.ulpfec.ulpfec_payload_type);
   }
 
   if (config_.rtp.rtcp_xr.receiver_reference_time_report)
     rtp_rtcp_->SetRtcpXrRrtrStatus(true);
 
   // Stats callback for CNAME changes.
   rtp_rtcp_->RegisterRtcpStatisticsCallback(receive_stats_proxy);
 
   process_thread_->RegisterModule(rtp_rtcp_.get());
@@ skipping 343 matching lines @@
     const std::string& extension, int id) {
   // One-byte-extension local identifiers are in the range 1-14 inclusive.
   RTC_DCHECK_GE(id, 1);
   RTC_DCHECK_LE(id, 14);
   RTC_DCHECK(RtpExtension::IsSupportedForVideo(extension));
   RTC_CHECK(rtp_header_parser_->RegisterRtpHeaderExtension(
       StringToRtpExtensionType(extension), id));
 }
 
 }  // namespace webrtc