blob: 7b242445d5304399bfb9017f52582823e7cddb47 [file] [log] [blame]
/*
* 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/agc2/adaptive_agc.h"
#include <algorithm>
#include <numeric>
#include "common_audio/include/audio_util.h"
#include "modules/audio_processing/agc2/vad_with_level.h"
#include "modules/audio_processing/logging/apm_data_dumper.h"
namespace webrtc {
AdaptiveAgc::AdaptiveAgc(ApmDataDumper* apm_data_dumper)
: speech_level_estimator_(apm_data_dumper),
gain_applier_(apm_data_dumper),
apm_data_dumper_(apm_data_dumper),
noise_level_estimator_(apm_data_dumper) {
RTC_DCHECK(apm_data_dumper);
}
AdaptiveAgc::~AdaptiveAgc() = default;
void AdaptiveAgc::Process(AudioFrameView<float> float_frame) {
// TODO(webrtc:7494): Remove this loop. Remove the vectors from
// VadWithData after we move to a VAD that outputs an estimate every
// kFrameDurationMs ms.
//
// Some VADs are 'bursty'. They return several estimates for some
// frames, and no estimates for other frames. We want to feed all to
// the level estimator, but only care about the last level it
// produces.
const VadWithLevel::LevelAndProbability vad_result =
vad_.AnalyzeFrame(float_frame);
apm_data_dumper_->DumpRaw("agc2_vad_probability",
vad_result.speech_probability);
apm_data_dumper_->DumpRaw("agc2_vad_rms_dbfs", vad_result.speech_rms_dbfs);
apm_data_dumper_->DumpRaw("agc2_vad_peak_dbfs", vad_result.speech_peak_dbfs);
speech_level_estimator_.UpdateEstimation(vad_result);
const float speech_level_dbfs = speech_level_estimator_.LatestLevelEstimate();
const float noise_level_dbfs = noise_level_estimator_.Analyze(float_frame);
apm_data_dumper_->DumpRaw("agc2_noise_estimate_dbfs", noise_level_dbfs);
// The gain applier applies the gain.
gain_applier_.Process(speech_level_dbfs, noise_level_dbfs, vad_result,
float_frame);
}
} // namespace webrtc