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/*
* Copyright (c) 2018 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.
*/
#include "modules/audio_processing/aec3/subtractor_output.h"
#include <numeric>
namespace webrtc {
SubtractorOutput::SubtractorOutput() = default;
SubtractorOutput::~SubtractorOutput() = default;
void SubtractorOutput::Reset() {
s_main.fill(0.f);
s_shadow.fill(0.f);
e_main.fill(0.f);
e_shadow.fill(0.f);
E_main.re.fill(0.f);
E_main.im.fill(0.f);
E2_main.fill(0.f);
E2_shadow.fill(0.f);
e2_main = 0.f;
e2_shadow = 0.f;
s2_main = 0.f;
s2_shadow = 0.f;
y2 = 0.f;
}
void SubtractorOutput::UpdatePowers(rtc::ArrayView<const float> y) {
const auto sum_of_squares = [](float a, float b) { return a + b * b; };
y2 = std::accumulate(y.begin(), y.end(), 0.f, sum_of_squares);
e2_main = std::accumulate(e_main.begin(), e_main.end(), 0.f, sum_of_squares);
e2_shadow =
std::accumulate(e_shadow.begin(), e_shadow.end(), 0.f, sum_of_squares);
s2_main = std::accumulate(s_main.begin(), s_main.end(), 0.f, sum_of_squares);
s2_shadow =
std::accumulate(s_shadow.begin(), s_shadow.end(), 0.f, sum_of_squares);
}
} // namespace webrtc
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