gain_controller2.cc | Explore in Territory

/*
 *  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/gain_controller2.h"

#include <memory>
#include <utility>

#include "api/audio/audio_frame.h"
#include "common_audio/include/audio_util.h"
#include "modules/audio_processing/agc2/agc2_common.h"
#include "modules/audio_processing/agc2/cpu_features.h"
#include "modules/audio_processing/audio_buffer.h"
#include "modules/audio_processing/include/audio_frame_view.h"
#include "modules/audio_processing/logging/apm_data_dumper.h"
#include "rtc_base/checks.h"
#include "rtc_base/logging.h"
#include "rtc_base/strings/string_builder.h"
#include "system_wrappers/include/field_trial.h"

namespace webrtc {
namespace {

Agc2Config;
InputVolumeControllerConfig;

constexpr int kLogLimiterStatsPeriodMs = …;
constexpr int kFrameLengthMs = …;
constexpr int kLogLimiterStatsPeriodNumFrames = …;

// Detects the available CPU features and applies any kill-switches.
AvailableCpuFeatures GetAllowedCpuFeatures() { … }

// Peak and RMS audio levels in dBFS.
struct AudioLevels { … };

// Speech level info.
struct SpeechLevel { … };

// Computes the audio levels for the first channel in `frame`.
AudioLevels ComputeAudioLevels(DeinterleavedView<float> frame,
                               ApmDataDumper& data_dumper) { … }

}  // namespace

std::atomic<int> GainController2::instance_count_(0);

GainController2::GainController2(
    const Agc2Config& config,
    const InputVolumeControllerConfig& input_volume_controller_config,
    int sample_rate_hz,
    int num_channels,
    bool use_internal_vad)
    : … { … }

GainController2::~GainController2() = default;

// TODO(webrtc:7494): Pass the flag also to the other components.
void GainController2::SetCaptureOutputUsed(bool capture_output_used) { … }

void GainController2::SetFixedGainDb(float gain_db) { … }

void GainController2::Analyze(int applied_input_volume,
                              const AudioBuffer& audio_buffer) { … }

void GainController2::Process(absl::optional<float> speech_probability,
                              bool input_volume_changed,
                              AudioBuffer* audio) { … }

bool GainController2::Validate(
    const AudioProcessing::Config::GainController2& config) { … }

}  // namespace webrtc
chromium/third_party/webrtc/modules/audio_processing/gain_controller2.cc
