Remove ViEEncoder::SetNetworkStatus

webrtc/modules/congestion_controller/congestion_controller.cc

Index: webrtc/modules/congestion_controller/congestion_controller.cc
diff --git a/webrtc/modules/congestion_controller/congestion_controller.cc b/webrtc/modules/congestion_controller/congestion_controller.cc
index 157258291ae92df4ea30a85a8206729886123dd7..ab3a90c2ecc6ee42efedf7086e971f8fbd5edef5 100644
--- a/webrtc/modules/congestion_controller/congestion_controller.cc
+++ b/webrtc/modules/congestion_controller/congestion_controller.cc
@@ -151,7 +151,10 @@ CongestionController::CongestionController(
       remote_estimator_proxy_(clock_, packet_router_.get()),
       transport_feedback_adapter_(bitrate_controller_.get(), clock_),
       min_bitrate_bps_(RemoteBitrateEstimator::kDefaultMinBitrateBps),
-      send_queue_is_full_(false) {
+      last_reported_bitrate_bps_(0),
+      last_reported_fraction_loss_(0),
+      last_reported_rtt_(0),
+      network_state_(kNetworkUp) {
   Init();
 }
 
@@ -170,7 +173,10 @@ CongestionController::CongestionController(
       remote_estimator_proxy_(clock_, packet_router_.get()),
       transport_feedback_adapter_(bitrate_controller_.get(), clock_),
       min_bitrate_bps_(RemoteBitrateEstimator::kDefaultMinBitrateBps),
-      send_queue_is_full_(false) {
+      last_reported_bitrate_bps_(0),
+      last_reported_fraction_loss_(0),
+      last_reported_rtt_(0),
+      network_state_(kNetworkUp) {
   Init();
 }
 
@@ -192,7 +198,10 @@ CongestionController::CongestionController(
       remote_estimator_proxy_(clock_, packet_router_.get()),
       transport_feedback_adapter_(bitrate_controller_.get(), clock_),
       min_bitrate_bps_(RemoteBitrateEstimator::kDefaultMinBitrateBps),
-      send_queue_is_full_(false) {
+      last_reported_bitrate_bps_(0),
+      last_reported_fraction_loss_(0),
+      last_reported_rtt_(0),
+      network_state_(kNetworkUp) {
   Init();
 }
 
@@ -265,6 +274,11 @@ void CongestionController::SignalNetworkState(NetworkState state) {
   } else {
     pacer_->Pause();
   }
+  {
+    rtc::CritScope cs(&critsect_);
+    network_state_ = state;
+  }
+  MaybeTriggerOnNetworkChanged();
 }
 
 void CongestionController::OnSentPacket(const rtc::SentPacket& sent_packet) {
@@ -297,24 +311,40 @@ void CongestionController::MaybeTriggerOnNetworkChanged() {
   uint32_t bitrate_bps;
   uint8_t fraction_loss;
   int64_t rtt;
-  bool network_changed = bitrate_controller_->GetNetworkParameters(
+  bool estimate_changed = bitrate_controller_->GetNetworkParameters(
       &bitrate_bps, &fraction_loss, &rtt);
-  if (network_changed)
+  if (estimate_changed)
     pacer_->SetEstimatedBitrate(bitrate_bps);
-  bool send_queue_is_full =
-      pacer_->ExpectedQueueTimeMs() > PacedSender::kMaxQueueLengthMs;
-  bitrate_bps = send_queue_is_full ? 0 : bitrate_bps;
-  if ((network_changed && !send_queue_is_full) ||
-      UpdateSendQueueStatus(send_queue_is_full)) {
+
+  bitrate_bps = IsNetworkDown() || IsSendQueueFull() ? 0 : bitrate_bps;
+
+  if (HasNetworkParametersToReportChanged(bitrate_bps, fraction_loss, rtt)) {
     observer_->OnNetworkChanged(bitrate_bps, fraction_loss, rtt);
   }
 }
 
-bool CongestionController::UpdateSendQueueStatus(bool send_queue_is_full) {
+bool CongestionController::HasNetworkParametersToReportChanged(
+    uint32_t bitrate_bps,
+    uint8_t fraction_loss,
+    int64_t rtt) {
+  rtc::CritScope cs(&critsect_);
+  bool changed =
+      last_reported_bitrate_bps_ != bitrate_bps ||
+      (bitrate_bps > 0 && (last_reported_fraction_loss_ != fraction_loss ||
+                           last_reported_rtt_ != rtt));
+  last_reported_bitrate_bps_ = bitrate_bps;
+  last_reported_fraction_loss_ = fraction_loss;
+  last_reported_rtt_ = rtt;
+  return changed;
+}
+
+bool CongestionController::IsSendQueueFull() const {
+  return pacer_->ExpectedQueueTimeMs() > PacedSender::kMaxQueueLengthMs;
+}
+
+bool CongestionController::IsNetworkDown() const {
   rtc::CritScope cs(&critsect_);
-  bool result = send_queue_is_full_ != send_queue_is_full;
-  send_queue_is_full_ = send_queue_is_full;
-  return result;
+  return network_state_ == kNetworkDown;
 }
 
 }  // namespace webrtc