Plot acknowledged bitrate when compiled with rtc_enable_bwe_test_logging.

webrtc/modules/congestion_controller/acknowledge_bitrate_estimator.cc

 /*
  *  Copyright (c) 2017 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.
  */
 
 #include "webrtc/modules/congestion_controller/acknowledge_bitrate_estimator.h"
 
 #include <cmath>
 
+#include "webrtc/modules/remote_bitrate_estimator/test/bwe_test_logging.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 
 namespace webrtc {
 
 namespace {
 constexpr int kInitialRateWindowMs = 500;
 constexpr int kRateWindowMs = 150;
 
 bool IsInSendTimeHistory(const PacketFeedback& packet) {
   return packet.send_time_ms >= 0;
@@ skipping 41 matching lines @@
   // Update a bayesian estimate of the rate, weighting it lower if the sample
   // uncertainty is large.
   // The bitrate estimate uncertainty is increased with each update to model
   // that the bitrate changes over time.
   float pred_bitrate_estimate_var = bitrate_estimate_var_ + 5.f;
   bitrate_estimate_ = (sample_var * bitrate_estimate_ +
                        pred_bitrate_estimate_var * bitrate_sample) /
                       (sample_var + pred_bitrate_estimate_var);
   bitrate_estimate_var_ = sample_var * pred_bitrate_estimate_var /
                           (sample_var + pred_bitrate_estimate_var);
+  BWE_TEST_LOGGING_PLOT(1, "acknowledged_bitrate", now_ms,
+                        bitrate_estimate_ * 1000);
 }
 
 float AcknowledgedBitrateEstimator::UpdateWindow(int64_t now_ms,
                                                  int bytes,
                                                  int rate_window_ms) {
   // Reset if time moves backwards.
   if (now_ms < prev_time_ms_) {
     prev_time_ms_ = -1;
     sum_ = 0;
     current_win_ms_ = 0;
@@ skipping 17 matching lines @@
   return bitrate_sample;
 }
 
 rtc::Optional<uint32_t> AcknowledgedBitrateEstimator::bitrate_bps() const {
   if (bitrate_estimate_ < 0.f)
     return rtc::Optional<uint32_t>();
   return rtc::Optional<uint32_t>(bitrate_estimate_ * 1000);
 }
 
 }  // namespace webrtc