chromium/third_party/webrtc/modules/audio_processing/aec3/filter_analyzer.cc

/*
 *  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.
 */

#include "modules/audio_processing/aec3/filter_analyzer.h"

#include <math.h>

#include <algorithm>
#include <array>
#include <numeric>

#include "modules/audio_processing/aec3/aec3_common.h"
#include "modules/audio_processing/aec3/render_buffer.h"
#include "modules/audio_processing/logging/apm_data_dumper.h"
#include "rtc_base/checks.h"

namespace webrtc {
namespace {

size_t FindPeakIndex(rtc::ArrayView<const float> filter_time_domain,
                     size_t peak_index_in,
                     size_t start_sample,
                     size_t end_sample) { … }

}  // namespace

std::atomic<int> FilterAnalyzer::instance_count_(0);

FilterAnalyzer::FilterAnalyzer(const EchoCanceller3Config& config,
                               size_t num_capture_channels)
    : … { … }

FilterAnalyzer::~FilterAnalyzer() = default;

void FilterAnalyzer::Reset() { … }

void FilterAnalyzer::Update(
    rtc::ArrayView<const std::vector<float>> filters_time_domain,
    const RenderBuffer& render_buffer,
    bool* any_filter_consistent,
    float* max_echo_path_gain) { … }

void FilterAnalyzer::AnalyzeRegion(
    rtc::ArrayView<const std::vector<float>> filters_time_domain,
    const RenderBuffer& render_buffer) { … }

void FilterAnalyzer::UpdateFilterGain(
    rtc::ArrayView<const float> filter_time_domain,
    FilterAnalysisState* st) { … }

void FilterAnalyzer::PreProcessFilters(
    rtc::ArrayView<const std::vector<float>> filters_time_domain) { … }

void FilterAnalyzer::ResetRegion() { … }

void FilterAnalyzer::SetRegionToAnalyze(size_t filter_size) { … }

FilterAnalyzer::ConsistentFilterDetector::ConsistentFilterDetector(
    const EchoCanceller3Config& config)
    : … { … }

void FilterAnalyzer::ConsistentFilterDetector::Reset() { … }

bool FilterAnalyzer::ConsistentFilterDetector::Detect(
    rtc::ArrayView<const float> filter_to_analyze,
    const FilterRegion& region,
    const Block& x_block,
    size_t peak_index,
    int delay_blocks) { … }

}  // namespace webrtc