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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_refined.fill(0.f);
s_coarse.fill(0.f);
e_refined.fill(0.f);
e_coarse.fill(0.f);
E_refined.re.fill(0.f);
E_refined.im.fill(0.f);
E2_refined.fill(0.f);
E2_coarse.fill(0.f);
e2_refined = 0.f;
e2_coarse = 0.f;
s2_refined = 0.f;
s2_coarse = 0.f;
y2 = 0.f;
}
void SubtractorOutput::ComputeMetrics(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_refined =
std::accumulate(e_refined.begin(), e_refined.end(), 0.f, sum_of_squares);
e2_coarse =
std::accumulate(e_coarse.begin(), e_coarse.end(), 0.f, sum_of_squares);
s2_refined =
std::accumulate(s_refined.begin(), s_refined.end(), 0.f, sum_of_squares);
s2_coarse =
std::accumulate(s_coarse.begin(), s_coarse.end(), 0.f, sum_of_squares);
s_refined_max_abs = *std::max_element(s_refined.begin(), s_refined.end());
s_refined_max_abs =
std::max(s_refined_max_abs,
-(*std::min_element(s_refined.begin(), s_refined.end())));
s_coarse_max_abs = *std::max_element(s_coarse.begin(), s_coarse.end());
s_coarse_max_abs = std::max(
s_coarse_max_abs, -(*std::min_element(s_coarse.begin(), s_coarse.end())));
}
} // namespace webrtc