1 files changed, 0 insertions, 147 deletions
diff --git a/libtransport/src/protocols/rtc/trendline_estimator.h b/libtransport/src/protocols/rtc/trendline_estimator.h
deleted file mode 100644
index 372acbc67..000000000
--- a/libtransport/src/protocols/rtc/trendline_estimator.h
+++ /dev/null
@@ -1,147 +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.
- */
-
-// FROM
-// https://source.chromium.org/chromium/chromium/src/+/master:third_party/webrtc/modules/congestion_controller/goog_cc/trendline_estimator.h
-
-#ifndef MODULES_CONGESTION_CONTROLLER_GOOG_CC_TRENDLINE_ESTIMATOR_H_
-#define MODULES_CONGESTION_CONTROLLER_GOOG_CC_TRENDLINE_ESTIMATOR_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include <algorithm>
-#include <deque>
-#include <memory>
-#include <utility>
-
-namespace transport {
-
-namespace protocol {
-
-namespace rtc {
-
-class OptionalDouble {
- public:
-  OptionalDouble() : val(0), has_val(false){};
-  OptionalDouble(double val) : val(val), has_val(true){};
-
-  double value() { return val; }
-  bool has_value() { return has_val; }
-
- private:
-  double val;
-  bool has_val;
-};
-
-enum class BandwidthUsage {
-  kBwNormal = 0,
-  kBwUnderusing = 1,
-  kBwOverusing = 2,
-  kLast
-};
-
-struct TrendlineEstimatorSettings {
-  static constexpr char kKey[] = "WebRTC-Bwe-TrendlineEstimatorSettings";
-  static constexpr unsigned kDefaultTrendlineWindowSize = 20;
-
-  // TrendlineEstimatorSettings() = delete;
-  TrendlineEstimatorSettings(
-      /*const WebRtcKeyValueConfig* key_value_config*/);
-
-  // Sort the packets in the window. Should be redundant,
-  // but then almost no cost.
-  bool enable_sort = false;
-
-  // Cap the trendline slope based on the minimum delay seen
-  // in the beginning_packets and end_packets respectively.
-  bool enable_cap = false;
-  unsigned beginning_packets = 7;
-  unsigned end_packets = 7;
-  double cap_uncertainty = 0.0;
-
-  // Size (in packets) of the window.
-  unsigned window_size = kDefaultTrendlineWindowSize;
-
-  // std::unique_ptr<StructParametersParser> Parser();
-};
-
-class TrendlineEstimator /*: public DelayIncreaseDetectorInterface */ {
- public:
-  TrendlineEstimator(/*const WebRtcKeyValueConfig* key_value_config,
-                     NetworkStatePredictor* network_state_predictor*/);
-
-  ~TrendlineEstimator();
-
-  // Update the estimator with a new sample. The deltas should represent deltas
-  // between timestamp groups as defined by the InterArrival class.
-  void Update(double recv_delta_ms, double send_delta_ms, int64_t send_time_ms,
-              int64_t arrival_time_ms, size_t packet_size,
-              bool calculated_deltas);
-
-  void UpdateTrendline(double recv_delta_ms, double send_delta_ms,
-                       int64_t send_time_ms, int64_t arrival_time_ms,
-                       size_t packet_size);
-
-  BandwidthUsage State() const;
-
-  struct PacketTiming {
-    PacketTiming(double arrival_time_ms, double smoothed_delay_ms,
-                 double raw_delay_ms)
-        : arrival_time_ms(arrival_time_ms),
-          smoothed_delay_ms(smoothed_delay_ms),
-          raw_delay_ms(raw_delay_ms) {}
-    double arrival_time_ms;
-    double smoothed_delay_ms;
-    double raw_delay_ms;
-  };
-
- private:
-  // friend class GoogCcStatePrinter;
-  void Detect(double trend, double ts_delta, int64_t now_ms);
-
-  void UpdateThreshold(double modified_offset, int64_t now_ms);
-
-  // Parameters.
-  TrendlineEstimatorSettings settings_;
-  const double smoothing_coef_;
-  const double threshold_gain_;
-  // Used by the existing threshold.
-  int num_of_deltas_;
-  // Keep the arrival times small by using the change from the first packet.
-  int64_t first_arrival_time_ms_;
-  // Exponential backoff filtering.
-  double accumulated_delay_;
-  double smoothed_delay_;
-  // Linear least squares regression.
-  std::deque<PacketTiming> delay_hist_;
-
-  const double k_up_;
-  const double k_down_;
-  double overusing_time_threshold_;
-  double threshold_;
-  double prev_modified_trend_;
-  int64_t last_update_ms_;
-  double prev_trend_;
-  double time_over_using_;
-  int overuse_counter_;
-  BandwidthUsage hypothesis_;
-  // BandwidthUsage hypothesis_predicted_;
-  // NetworkStatePredictor* network_state_predictor_;
-
-  // RTC_DISALLOW_COPY_AND_ASSIGN(TrendlineEstimator);
-};
-
-}  // namespace rtc
-
-}  // end namespace protocol
-
-}  // end namespace transport
-#endif  // MODULES_CONGESTION_CONTROLLER_GOOG_CC_TRENDLINE_ESTIMATOR_H_