Major AEC3 render pipeline changes

webrtc/modules/audio_processing/aec3/fft_buffer.h

Index: webrtc/modules/audio_processing/aec3/fft_buffer.h
diff --git a/webrtc/modules/audio_processing/aec3/fft_buffer.h b/webrtc/modules/audio_processing/aec3/fft_buffer.h
deleted file mode 100644
index c99c9570f35e58ed6db62c522c4471ea34305bbe..0000000000000000000000000000000000000000
--- a/webrtc/modules/audio_processing/aec3/fft_buffer.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- *  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_FFT_BUFFER_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_FFT_BUFFER_H_
-
-#include <memory>
-#include <vector>
-
-#include "webrtc/base/array_view.h"
-#include "webrtc/base/constructormagic.h"
-#include "webrtc/modules/audio_processing/aec3/fft_data.h"
-
-namespace webrtc {
-
-// Provides a circular buffer for 128 point real-valued FFT data.
-class FftBuffer {
- public:
-  // The constructor takes as parameters the size of the buffer, as well as a
-  // vector containing the number of FFTs that will be included in the spectral
-  // sums in the call to SpectralSum.
-  FftBuffer(Aec3Optimization optimization,
-            size_t size,
-            const std::vector<size_t> num_ffts_for_spectral_sums);
-  ~FftBuffer();
-
-  // Insert an FFT into the buffer.
-  void Insert(const FftData& fft);
-
-  // Get the spectrum from one of the FFTs in the buffer
-  const std::array<float, kFftLengthBy2Plus1>& Spectrum(
-      size_t buffer_offset_ffts) const {
-    return spectrum_buffer_[(position_ + buffer_offset_ffts) %
-                            fft_buffer_.size()];
-  }
-
-  // Returns the sum of the spectrums for a certain number of FFTs.
-  const std::array<float, kFftLengthBy2Plus1>& SpectralSum(
-      size_t num_ffts) const {
-    RTC_DCHECK_EQ(spectral_sums_length_, num_ffts);
-    return spectral_sums_[0];
-  }
-
-  // Returns the circular buffer.
-  rtc::ArrayView<const FftData> Buffer() const { return fft_buffer_; }
-
-  // Returns the current position in the circular buffer
-  size_t Position() const { return position_; }
-
- private:
-  const Aec3Optimization optimization_;
-  std::vector<FftData> fft_buffer_;
-  std::vector<std::array<float, kFftLengthBy2Plus1>> spectrum_buffer_;
-  size_t spectral_sums_length_;
-  std::vector<std::array<float, kFftLengthBy2Plus1>> spectral_sums_;
-  size_t position_ = 0;
-
-  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(FftBuffer);
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_FFT_BUFFER_H_