Wire up currently-received video codec to stats.

talk/media/webrtc/webrtcvideoengine2.cc

 /*
  * libjingle
  * Copyright 2014 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 2566 matching lines @@
 void WebRtcVideoChannel2::WebRtcVideoReceiveStream::SetSize(int width,
                                                             int height) {
   rtc::CritScope crit(&renderer_lock_);
   if (!renderer_->SetSize(width, height, 0)) {
     LOG(LS_ERROR) << "Could not set renderer size.";
   }
   last_width_ = width;
   last_height_ = height;
 }
 
+std::string
+WebRtcVideoChannel2::WebRtcVideoReceiveStream::GetCodecNameFromPayloadType(
+    int payload_type) {
+  for (const webrtc::VideoReceiveStream::Decoder& decoder : config_.decoders) {
+    if (decoder.payload_type == payload_type) {
+      return decoder.payload_name;
+    }
+  }
+  return "";
+}
+
 VideoReceiverInfo
 WebRtcVideoChannel2::WebRtcVideoReceiveStream::GetVideoReceiverInfo() {
   VideoReceiverInfo info;
   info.ssrc_groups = ssrc_groups_;
   info.add_ssrc(config_.rtp.remote_ssrc);
   webrtc::VideoReceiveStream::Stats stats = stream_->GetStats();
   info.bytes_rcvd = stats.rtp_stats.transmitted.payload_bytes +
                     stats.rtp_stats.transmitted.header_bytes +
                     stats.rtp_stats.transmitted.padding_bytes;
   info.packets_rcvd = stats.rtp_stats.transmitted.packets;
@@ skipping 13 matching lines @@
   }
 
   info.decode_ms = stats.decode_ms;
   info.max_decode_ms = stats.max_decode_ms;
   info.current_delay_ms = stats.current_delay_ms;
   info.target_delay_ms = stats.target_delay_ms;
   info.jitter_buffer_ms = stats.jitter_buffer_ms;
   info.min_playout_delay_ms = stats.min_playout_delay_ms;
   info.render_delay_ms = stats.render_delay_ms;
 
+  info.codec_name = GetCodecNameFromPayloadType(stats.current_payload_type);
+
   info.firs_sent = stats.rtcp_packet_type_counts.fir_packets;
   info.plis_sent = stats.rtcp_packet_type_counts.pli_packets;
   info.nacks_sent = stats.rtcp_packet_type_counts.nack_packets;
 
   return info;
 }
 
 WebRtcVideoChannel2::VideoCodecSettings::VideoCodecSettings()
     : rtx_payload_type(-1) {}
 
@@ skipping 102 matching lines @@
       video_codecs[i].rtx_payload_type = rtx_mapping[video_codecs[i].codec.id];
     }
   }
 
   return video_codecs;
 }
 
 }  // namespace cricket
 
 #endif  // HAVE_WEBRTC_VIDEO