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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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31 | 31 |
32 class LevelController { | 32 class LevelController { |
33 public: | 33 public: |
34 LevelController(); | 34 LevelController(); |
35 ~LevelController(); | 35 ~LevelController(); |
36 | 36 |
37 void Initialize(int sample_rate_hz); | 37 void Initialize(int sample_rate_hz); |
38 void Process(AudioBuffer* audio); | 38 void Process(AudioBuffer* audio); |
39 float GetLastGain() { return last_gain_; } | 39 float GetLastGain() { return last_gain_; } |
40 | 40 |
41 // Validates a config. | |
42 static bool Validate(const AudioProcessing::Config::LevelController& config); | |
43 // Dumps a config to a string. | |
44 static std::string ToString( | |
45 const AudioProcessing::Config::LevelController& config); | |
46 | |
47 private: | 41 private: |
48 class Metrics { | 42 class Metrics { |
49 public: | 43 public: |
50 Metrics() { Initialize(AudioProcessing::kSampleRate48kHz); } | 44 Metrics() { Initialize(AudioProcessing::kSampleRate48kHz); } |
51 void Initialize(int sample_rate_hz); | 45 void Initialize(int sample_rate_hz); |
52 void Update(float long_term_peak_level, | 46 void Update(float long_term_peak_level, |
53 float noise_level, | 47 float noise_level, |
54 float gain, | 48 float gain, |
55 float frame_peak_level); | 49 float frame_peak_level); |
56 | 50 |
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80 float dc_level_[2]; | 74 float dc_level_[2]; |
81 float dc_forgetting_factor_; | 75 float dc_forgetting_factor_; |
82 float last_gain_; | 76 float last_gain_; |
83 | 77 |
84 RTC_DISALLOW_COPY_AND_ASSIGN(LevelController); | 78 RTC_DISALLOW_COPY_AND_ASSIGN(LevelController); |
85 }; | 79 }; |
86 | 80 |
87 } // namespace webrtc | 81 } // namespace webrtc |
88 | 82 |
89 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LEVEL_CONTROLLER_H_ | 83 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LEVEL_CONTROLLER_H_ |
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