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/*
* Copyright (c) 2019 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 MODULES_AUDIO_PROCESSING_AEC3_ADAPTIVE_FIR_FILTER_ERL_H_
#define MODULES_AUDIO_PROCESSING_AEC3_ADAPTIVE_FIR_FILTER_ERL_H_
#include <stddef.h>
#include <array>
#include <vector>
#include "api/array_view.h"
#include "modules/audio_processing/aec3/aec3_common.h"
#include "rtc_base/system/arch.h"
namespace webrtc {
namespace aec3 {
// Computes and stores the echo return loss estimate of the filter, which is the
// sum of the partition frequency responses.
void ErlComputer(const std::vector<std::array<float, kFftLengthBy2Plus1>>& H2,
rtc::ArrayView<float> erl);
#if defined(WEBRTC_HAS_NEON)
void ErlComputer_NEON(
const std::vector<std::array<float, kFftLengthBy2Plus1>>& H2,
rtc::ArrayView<float> erl);
#endif
#if defined(WEBRTC_ARCH_X86_FAMILY)
void ErlComputer_SSE2(
const std::vector<std::array<float, kFftLengthBy2Plus1>>& H2,
rtc::ArrayView<float> erl);
void ErlComputer_AVX2(
const std::vector<std::array<float, kFftLengthBy2Plus1>>& H2,
rtc::ArrayView<float> erl);
#endif
} // namespace aec3
// Computes the echo return loss based on a frequency response.
void ComputeErl(const Aec3Optimization& optimization,
const std::vector<std::array<float, kFftLengthBy2Plus1>>& H2,
rtc::ArrayView<float> erl);
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_AEC3_ADAPTIVE_FIR_FILTER_ERL_H_
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