Major AEC3 render pipeline changes

webrtc/modules/audio_processing/aec3/power_echo_model.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_POWER_ECHO_MODEL_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_POWER_ECHO_MODEL_H_
 
 #include <array>
 
 #include "webrtc/base/constructormagic.h"
 #include "webrtc/base/optional.h"
 #include "webrtc/modules/audio_processing/aec3/aec3_common.h"
 #include "webrtc/modules/audio_processing/aec3/aec_state.h"
 #include "webrtc/modules/audio_processing/aec3/echo_path_variability.h"
-#include "webrtc/modules/audio_processing/aec3/fft_buffer.h"
+#include "webrtc/modules/audio_processing/aec3/render_buffer.h"
 
 namespace webrtc {
 
 // Provides an echo model based on power spectral estimates that estimates the
 // echo spectrum.
 class PowerEchoModel {
  public:
   PowerEchoModel();
   ~PowerEchoModel();
 
   // Ajusts the model according to echo path changes.
   void HandleEchoPathChange(const EchoPathVariability& variability);
 
   // Updates the echo model and estimates the echo spectrum.
   void EstimateEcho(
-      const FftBuffer& render_buffer,
+      const RenderBuffer& render_buffer,
       const std::array<float, kFftLengthBy2Plus1>& capture_spectrum,
       const AecState& aec_state,
       std::array<float, kFftLengthBy2Plus1>* echo_spectrum);
 
   // Returns the minimum required farend buffer length.
   size_t MinFarendBufferLength() const { return kRenderBufferSize; }
 
  private:
   // Provides a float value that is coupled with a counter.
   struct CountedFloat {
     CountedFloat() : value(0.f), counter(0) {}
     CountedFloat(float value, int counter) : value(value), counter(counter) {}
     float value;
     int counter;
   };
 
   const size_t kRenderBufferSize = 100;
   std::array<CountedFloat, kFftLengthBy2Plus1> H2_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(PowerEchoModel);
 };
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_POWER_ECHO_MODEL_H_