Instantly pass network changes to controllers in audio network adaptor.

webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h

 /*
  *  Copyright (c) 2016 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 46 matching lines @@
            const Threshold& fec_disabling_threshold,
            int time_constant_ms,
            const Clock* clock);
     bool initial_fec_enabled;
     Threshold fec_enabling_threshold;
     Threshold fec_disabling_threshold;
     int time_constant_ms;
     const Clock* clock;
   };
 
-  explicit FecController(const Config& config);
-
   // Dependency injection for testing.
   FecController(const Config& config,
                 std::unique_ptr<SmoothingFilter> smoothing_filter);
 
+  explicit FecController(const Config& config);
+
   ~FecController() override;
 
-  void MakeDecision(const NetworkMetrics& metrics,
-                    AudioNetworkAdaptor::EncoderRuntimeConfig* config) override;
+  void UpdateNetworkMetrics(const NetworkMetrics& network_metrics) override;
+
+  void MakeDecision(AudioNetworkAdaptor::EncoderRuntimeConfig* config) override;
 
  private:
   // Characterize Threshold with packet_loss = slope * bandwidth + offset.
   struct ThresholdInfo {
     explicit ThresholdInfo(const Config::Threshold& threshold);
     float slope;
     float offset;
   };
 
   float GetPacketLossThreshold(int bandwidth_bps,
                                const Config::Threshold& threshold,
                                const ThresholdInfo& threshold_info) const;
 
-  bool FecEnablingDecision(const NetworkMetrics& metrics,
-                           const rtc::Optional<float>& packet_loss) const;
-  bool FecDisablingDecision(const NetworkMetrics& metrics,
-                            const rtc::Optional<float>& packet_loss) const;
+  bool FecEnablingDecision(const rtc::Optional<float>& packet_loss) const;
+  bool FecDisablingDecision(const rtc::Optional<float>& packet_loss) const;
 
   const Config config_;
   bool fec_enabled_;
-  std::unique_ptr<SmoothingFilter> packet_loss_smoothed_;
+  rtc::Optional<int> uplink_bandwidth_bps_;
+  const std::unique_ptr<SmoothingFilter> packet_loss_smoother_;
 
   const ThresholdInfo fec_enabling_threshold_info_;
   const ThresholdInfo fec_disabling_threshold_info_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(FecController);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_H_