Introduce FecControllerRplrBased

webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h

Index: webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h b/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h
deleted file mode 100644
index 8d9cbb03f9cf590d7d7e235b25fdcc2213ca2af8..0000000000000000000000000000000000000000
--- a/webrtc/modules/audio_coding/audio_network_adaptor/fec_controller.h
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- *  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.
- */
-
-#ifndef WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_H_
-#define WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_FEC_CONTROLLER_H_
-
-#include <memory>
-
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/common_audio/smoothing_filter.h"
-#include "webrtc/modules/audio_coding/audio_network_adaptor/controller.h"
-
-namespace webrtc {
-
-class FecController final : public Controller {
- public:
-  struct Config {
-    struct Threshold {
-      // Threshold defines a curve in the bandwidth/packet-loss domain. The
-      // curve is characterized by the two conjunction points: A and B.
-      //
-      // packet ^  |
-      //  loss  | A|
-      //        |   \        A: (low_bandwidth_bps, low_bandwidth_packet_loss)
-      //        |    \       B: (high_bandwidth_bps, high_bandwidth_packet_loss)
-      //        |    B\________
-      //        |---------------> bandwidth
-      Threshold(int low_bandwidth_bps,
-                float low_bandwidth_packet_loss,
-                int high_bandwidth_bps,
-                float high_bandwidth_packet_loss);
-      int low_bandwidth_bps;
-      float low_bandwidth_packet_loss;
-      int high_bandwidth_bps;
-      float high_bandwidth_packet_loss;
-    };
-
-    // |fec_enabling_threshold| defines a curve, above which FEC should be
-    // enabled. |fec_disabling_threshold| defines a curve, under which FEC
-    // should be disabled. See below
-    //
-    // packet-loss ^   |  |
-    //             |   |  |   FEC
-    //             |    \  \   ON
-    //             | FEC \  \_______ fec_enabling_threshold
-    //             | OFF  \_________ fec_disabling_threshold
-    //             |-----------------> bandwidth
-    Config(bool initial_fec_enabled,
-           const Threshold& fec_enabling_threshold,
-           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;
-  };
-
-  // Dependency injection for testing.
-  FecController(const Config& config,
-                std::unique_ptr<SmoothingFilter> smoothing_filter);
-
-  explicit FecController(const Config& config);
-
-  ~FecController() 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 rtc::Optional<float>& packet_loss) const;
-  bool FecDisablingDecision(const rtc::Optional<float>& packet_loss) const;
-
-  const Config config_;
-  bool fec_enabled_;
-  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_