blob: 5c817cda6a4aa2ef657d9bfb33e2d3188bfe1bec [file] [log] [blame]
* 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 <stddef.h>
#include <array>
#include <memory>
#include "api/audio/echo_canceller3_config.h"
#include "modules/audio_processing/aec3/aec3_common.h"
#include "rtc_base/constructor_magic.h"
namespace webrtc {
class AdaptiveFirFilter;
class ApmDataDumper;
struct EchoPathVariability;
struct FftData;
class RenderSignalAnalyzer;
struct SubtractorOutput;
// Provides functionality for computing the adaptive gain for the main filter.
class MainFilterUpdateGain {
explicit MainFilterUpdateGain(
const EchoCanceller3Config::Filter::MainConfiguration& config,
size_t config_change_duration_blocks);
// Takes action in the case of a known echo path change.
void HandleEchoPathChange(const EchoPathVariability& echo_path_variability);
// Computes the gain.
void Compute(const std::array<float, kFftLengthBy2Plus1>& render_power,
const RenderSignalAnalyzer& render_signal_analyzer,
const SubtractorOutput& subtractor_output,
const AdaptiveFirFilter& filter,
bool saturated_capture_signal,
FftData* gain_fft);
// Sets a new config.
void SetConfig(const EchoCanceller3Config::Filter::MainConfiguration& config,
bool immediate_effect) {
if (immediate_effect) {
old_target_config_ = current_config_ = target_config_ = config;
config_change_counter_ = 0;
} else {
old_target_config_ = current_config_;
target_config_ = config;
config_change_counter_ = config_change_duration_blocks_;
static int instance_count_;
std::unique_ptr<ApmDataDumper> data_dumper_;
const int config_change_duration_blocks_;
float one_by_config_change_duration_blocks_;
EchoCanceller3Config::Filter::MainConfiguration current_config_;
EchoCanceller3Config::Filter::MainConfiguration target_config_;
EchoCanceller3Config::Filter::MainConfiguration old_target_config_;
std::array<float, kFftLengthBy2Plus1> H_error_;
size_t poor_excitation_counter_;
size_t call_counter_ = 0;
int config_change_counter_ = 0;
// Updates the current config towards the target config.
void UpdateCurrentConfig();
} // namespace webrtc