Utilizing the AEC3 config struct for constants.

webrtc/modules/audio_processing/aec3/erle_estimator.h

 /*
  *  Copyright (c) 2017 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_PROCESSING_AEC3_ERLE_ESTIMATOR_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_ERLE_ESTIMATOR_H_
 
 #include <array>
 
 #include "webrtc/modules/audio_processing/aec3/aec3_common.h"
 #include "webrtc/rtc_base/constructormagic.h"
 
 namespace webrtc {
 
 // Estimates the echo return loss enhancement based on the signal spectra.
 class ErleEstimator {
  public:
-  ErleEstimator();
+  ErleEstimator(float min_erle, float max_erle_lf, float max_erle_hf);
   ~ErleEstimator();
 
   // Updates the ERLE estimate.
   void Update(const std::array<float, kFftLengthBy2Plus1>& render_spectrum,
               const std::array<float, kFftLengthBy2Plus1>& capture_spectrum,
               const std::array<float, kFftLengthBy2Plus1>& subtractor_spectrum);
 
   // Returns the most recent ERLE estimate.
   const std::array<float, kFftLengthBy2Plus1>& Erle() const { return erle_; }
 
  private:
   std::array<float, kFftLengthBy2Plus1> erle_;
   std::array<int, kFftLengthBy2Minus1> hold_counters_;
+  const float min_erle_;
+  const float max_erle_lf_;
+  const float max_erle_hf_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(ErleEstimator);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_ERLE_ESTIMATOR_H_