Add periodic logging of video stats.

webrtc/video/video_send_stream.cc

 /*
  *  Copyright (c) 2013 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 144 matching lines @@
   ss << ", local_renderer: "
      << (local_renderer ? "(VideoRenderer)" : "nullptr");
   ss << ", render_delay_ms: " << render_delay_ms;
   ss << ", target_delay_ms: " << target_delay_ms;
   ss << ", suspend_below_min_bitrate: " << (suspend_below_min_bitrate ? "on"
                                                                       : "off");
   ss << '}';
   return ss.str();
 }
 
+std::string VideoSendStream::Stats::ToString(int64_t time_ms) const {
+  std::stringstream ss;
+  ss << "VideoSendStream stats:" << time_ms << ", {";
+  ss << "input_fps:" << input_frame_rate << ", ";
+  ss << "encode_fps:" << encode_frame_rate << ", ";
+  ss << "encode_ms:" << avg_encode_time_ms << ", ";
+  ss << "encode_usage_perc:" << encode_usage_percent << ", ";
+  ss << "target_bps:" << target_media_bitrate_bps << ", ";
+  ss << "media_bps:" << media_bitrate_bps << ", ";
+  ss << "suspended:" << (suspended ? "true" : "false") << ", ";
+  ss << "bw_adapted:" << (bw_limited_resolution ? "true" : "false") << "";
+  ss << '}';
+  for (const auto& substream : substreams) {
+    ss << " {ssrc:" << substream.first << ", ";
+    ss << substream.second.ToString();
+    ss << '}';
+  }
+  return ss.str();
+}
+
+std::string VideoSendStream::StreamStats::ToString() const {
+  std::stringstream ss;
+  ss << "width:" << width << ", ";
+  ss << "height:" << height << ", ";
+  ss << "key:" << frame_counts.key_frames << ", ";
+  ss << "delta:" << frame_counts.delta_frames << ", ";
+  ss << "total_bps:" << total_bitrate_bps << ", ";
+  ss << "retransmit_bps:" << retransmit_bitrate_bps << ", ";
+  ss << "avg_delay_ms:" << avg_delay_ms << ", ";
+  ss << "max_delay_ms:" << max_delay_ms << ", ";
+  ss << "nack:" << rtcp_packet_type_counts.nack_packets << ", ";
+  ss << "fir:" << rtcp_packet_type_counts.fir_packets << ", ";
+  ss << "pli:" << rtcp_packet_type_counts.pli_packets;
+  return ss.str();
+}
+
 namespace {
 
 VideoCodecType PayloadNameToCodecType(const std::string& payload_name) {
   if (payload_name == "VP8")
     return kVideoCodecVP8;
   if (payload_name == "VP9")
     return kVideoCodecVP9;
   if (payload_name == "H264")
     return kVideoCodecH264;
   return kVideoCodecGeneric;
@@ skipping 755 matching lines @@
                           &module_nack_rate);
     *sent_video_rate_bps += module_video_rate;
     *sent_nack_rate_bps += module_nack_rate;
     *sent_fec_rate_bps += module_fec_rate;
   }
   return 0;
 }
 
 }  // namespace internal
 }  // namespace webrtc