| /* |
| * 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. |
| */ |
| |
| #ifndef MODULES_AUDIO_PROCESSING_AGC2_FIXED_GAIN_CONTROLLER_H_ |
| #define MODULES_AUDIO_PROCESSING_AGC2_FIXED_GAIN_CONTROLLER_H_ |
| |
| #include "modules/audio_processing/agc2/gain_curve_applier.h" |
| #include "modules/audio_processing/include/audio_frame_view.h" |
| |
| namespace webrtc { |
| class ApmDataDumper; |
| |
| class FixedGainController { |
| public: |
| explicit FixedGainController(ApmDataDumper* apm_data_dumper); |
| FixedGainController(ApmDataDumper* apm_data_dumper, |
| std::string histogram_name_prefix); |
| |
| void Process(AudioFrameView<float> signal); |
| |
| // Gain and sample rate may be changed at any time (but not |
| // concurrently with any other method call). |
| void SetGain(float gain_to_apply_db); |
| void SetSampleRate(size_t sample_rate_hz); |
| float LastAudioLevel() const; |
| |
| private: |
| float gain_to_apply_ = 1.f; |
| ApmDataDumper* apm_data_dumper_ = nullptr; |
| GainCurveApplier gain_curve_applier_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_AUDIO_PROCESSING_AGC2_FIXED_GAIN_CONTROLLER_H_ |