Video/Screenshare loopback tool.

webrtc/modules/congestion_controller/delay_based_bwe.cc

Index: webrtc/modules/congestion_controller/delay_based_bwe.cc
diff --git a/webrtc/modules/congestion_controller/delay_based_bwe.cc b/webrtc/modules/congestion_controller/delay_based_bwe.cc
index dd59b8a81bea71507294182edfbbdc1ffe4d68e3..139b40fb04a0c5a52da807942fa864b18e450cec 100644
--- a/webrtc/modules/congestion_controller/delay_based_bwe.cc
+++ b/webrtc/modules/congestion_controller/delay_based_bwe.cc
@@ -217,7 +217,7 @@ DelayBasedBwe::Result DelayBasedBwe::MaybeUpdateEstimate(
   int64_t now_ms = clock_->TimeInMilliseconds();
 
   rtc::Optional<int> probe_bitrate_bps =
-      probe_bitrate_estimator_.FetchAndResetLastEstimatedBitrateBps();
+      probe_bitrate_estimator_.FetchAndResetLastEstimatedBitrateBps(50);
   // Currently overusing the bandwidth.
   if (overusing) {
     if (acked_bitrate_bps &&
@@ -249,14 +249,16 @@ DelayBasedBwe::Result DelayBasedBwe::MaybeUpdateEstimate(
       result.recovered_from_overuse = recovered_from_overuse;
     }
   }
-  if (result.updated) {
+  if (result.updated || detector_.State() != last_logged_state_) {
     BWE_TEST_LOGGING_PLOT(1, "target_bitrate_bps", now_ms,
                           result.target_bitrate_bps);
     if (event_log_ && (result.target_bitrate_bps != last_logged_bitrate_ ||
                        detector_.State() != last_logged_state_)) {
-      event_log_->LogDelayBasedBweUpdate(result.target_bitrate_bps,
-                                         detector_.State());
-      last_logged_bitrate_ = result.target_bitrate_bps;
+      uint32_t bitrate_bps =
+          result.updated ? result.target_bitrate_bps : last_logged_bitrate_;
+      event_log_->LogDelayBasedBweUpdate(bitrate_bps, detector_.State());
+      if (result.target_bitrate_bps > 0)
+        last_logged_bitrate_ = result.target_bitrate_bps;
       last_logged_state_ = detector_.State();
     }
   }