1 /* 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_AUDIO_PROCESSING_GAIN_CONTROLLER2_H_ 12 #define MODULES_AUDIO_PROCESSING_GAIN_CONTROLLER2_H_ 13 14 #include <memory> 15 #include <string> 16 17 #include "modules/audio_processing/agc2/adaptive_agc.h" 18 #include "modules/audio_processing/agc2/gain_applier.h" 19 #include "modules/audio_processing/agc2/limiter.h" 20 #include "modules/audio_processing/include/audio_processing.h" 21 #include "rtc_base/constructor_magic.h" 22 23 namespace webrtc { 24 25 class ApmDataDumper; 26 class AudioBuffer; 27 28 // Gain Controller 2 aims to automatically adjust levels by acting on the 29 // microphone gain and/or applying digital gain. 30 class GainController2 { 31 public: 32 GainController2(); 33 ~GainController2(); 34 35 void Initialize(int sample_rate_hz); 36 void Process(AudioBuffer* audio); 37 void NotifyAnalogLevel(int level); 38 39 void ApplyConfig(const AudioProcessing::Config::GainController2& config); 40 static bool Validate(const AudioProcessing::Config::GainController2& config); 41 static std::string ToString( 42 const AudioProcessing::Config::GainController2& config); 43 44 private: 45 static int instance_count_; 46 std::unique_ptr<ApmDataDumper> data_dumper_; 47 AudioProcessing::Config::GainController2 config_; 48 GainApplier gain_applier_; 49 std::unique_ptr<AdaptiveAgc> adaptive_agc_; 50 Limiter limiter_; 51 int analog_level_ = -1; 52 53 RTC_DISALLOW_COPY_AND_ASSIGN(GainController2); 54 }; 55 56 } // namespace webrtc 57 58 #endif // MODULES_AUDIO_PROCESSING_GAIN_CONTROLLER2_H_ 59