Add periodic logging of video stats.

webrtc/video/video_receive_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 91 matching lines @@
   for (size_t i = 0; i < extensions.size(); ++i) {
     ss << extensions[i].ToString();
     if (i != extensions.size() - 1)
       ss << ", ";
   }
   ss << ']';
   ss << '}';
   return ss.str();
 }
 
+std::string VideoReceiveStream::Stats::ToString(int64_t time_ms) const {
+  std::stringstream ss;
+  ss << "VideoReceiveStream stats:" << time_ms << ",{ssrc:" << ssrc << ",";
+  ss << "[tot_bps:" << total_bitrate_bps << "],";

[pbos-webrtc, 2016/07/10 16:58:51]

Remove []s unless this format is from somewhere. Also can we have total_bps or
do these strings come from somewhere?

Same with w: and h: etc, these would be more readable as decode_fps etc. instead
of being shortened.

[åsapersson, 2016/08/01 15:55:22]

Done.

+  ss << "[w:" << width << "],";
+  ss << "[h:" << height << "],";
+  ss << "[network_fps:" << network_frame_rate << "],";
+  ss << "[dec_fps:" << decode_frame_rate << "],";
+  ss << "[render_fps:" << render_frame_rate << "],";
+  ss << "[dec_ms:" << decode_ms << "],";
+  ss << "[max_dec_ms:" << max_decode_ms << "],";
+  ss << "[cur_delay_ms:" << current_delay_ms << "],";
+  ss << "[targ_delay_ms:" << target_delay_ms << "],";
+  ss << "[jb_delay_ms:" << jitter_buffer_ms << "],";
+  ss << "[min_playout_delay_ms:" << min_playout_delay_ms << "],";
+  ss << "[discarded:" << discarded_packets << "]";
+  ss << '}';
+  return ss.str();
+}
+
 namespace {
 VideoCodec CreateDecoderVideoCodec(const VideoReceiveStream::Decoder& decoder) {
   VideoCodec codec;
   memset(&codec, 0, sizeof(codec));
 
   codec.plType = decoder.payload_type;
   strncpy(codec.plName, decoder.payload_name.c_str(), sizeof(codec.plName));
   if (decoder.payload_name == "VP8") {
     codec.codecType = kVideoCodecVP8;
   } else if (decoder.payload_name == "VP9") {
@@ skipping 237 matching lines @@
     const std::vector<uint16_t>& sequence_numbers) {
   rtp_stream_receiver_.RequestPacketRetransmit(sequence_numbers);
 }
 
 void VideoReceiveStream::RequestKeyFrame() {
   rtp_stream_receiver_.RequestKeyFrame();
 }
 
 }  // namespace internal
 }  // namespace webrtc