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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 | 
| 11 #include "webrtc/modules/audio_processing/level_controller/level_controller.h" | 11 #include "webrtc/modules/audio_processing/level_controller/level_controller.h" | 
| 12 | 12 | 
| 13 #include <math.h> | 13 #include <math.h> | 
| 14 #include <algorithm> | 14 #include <algorithm> | 
| 15 #include <numeric> | 15 #include <numeric> | 
| 16 | 16 | 
| 17 #include "webrtc/base/array_view.h" | 17 #include "webrtc/base/array_view.h" | 
| 18 #include "webrtc/base/arraysize.h" | 18 #include "webrtc/base/arraysize.h" | 
| 19 #include "webrtc/base/checks.h" | 19 #include "webrtc/base/checks.h" | 
|  | 20 #include "webrtc/base/logging.h" | 
| 20 #include "webrtc/modules/audio_processing/audio_buffer.h" | 21 #include "webrtc/modules/audio_processing/audio_buffer.h" | 
| 21 #include "webrtc/modules/audio_processing/level_controller/gain_applier.h" | 22 #include "webrtc/modules/audio_processing/level_controller/gain_applier.h" | 
| 22 #include "webrtc/modules/audio_processing/level_controller/gain_selector.h" | 23 #include "webrtc/modules/audio_processing/level_controller/gain_selector.h" | 
| 23 #include "webrtc/modules/audio_processing/level_controller/noise_level_estimator
     .h" | 24 #include "webrtc/modules/audio_processing/level_controller/noise_level_estimator
     .h" | 
| 24 #include "webrtc/modules/audio_processing/level_controller/peak_level_estimator.
     h" | 25 #include "webrtc/modules/audio_processing/level_controller/peak_level_estimator.
     h" | 
| 25 #include "webrtc/modules/audio_processing/level_controller/saturating_gain_estim
     ator.h" | 26 #include "webrtc/modules/audio_processing/level_controller/saturating_gain_estim
     ator.h" | 
| 26 #include "webrtc/modules/audio_processing/level_controller/signal_classifier.h" | 27 #include "webrtc/modules/audio_processing/level_controller/signal_classifier.h" | 
| 27 #include "webrtc/modules/audio_processing/logging/apm_data_dumper.h" | 28 #include "webrtc/modules/audio_processing/logging/apm_data_dumper.h" | 
| 28 #include "webrtc/system_wrappers/include/logging.h" |  | 
| 29 #include "webrtc/system_wrappers/include/metrics.h" | 29 #include "webrtc/system_wrappers/include/metrics.h" | 
| 30 | 30 | 
| 31 namespace webrtc { | 31 namespace webrtc { | 
| 32 namespace { | 32 namespace { | 
| 33 | 33 | 
| 34 void UpdateAndRemoveDcLevel(float forgetting_factor, | 34 void UpdateAndRemoveDcLevel(float forgetting_factor, | 
| 35                             float* dc_level, | 35                             float* dc_level, | 
| 36                             rtc::ArrayView<float> x) { | 36                             rtc::ArrayView<float> x) { | 
| 37   RTC_DCHECK(!x.empty()); | 37   RTC_DCHECK(!x.empty()); | 
| 38   float mean = | 38   float mean = | 
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| 284 | 284 | 
| 285 bool LevelController::Validate( | 285 bool LevelController::Validate( | 
| 286     const AudioProcessing::Config::LevelController& config) { | 286     const AudioProcessing::Config::LevelController& config) { | 
| 287   return (config.initial_peak_level_dbfs < | 287   return (config.initial_peak_level_dbfs < | 
| 288               std::numeric_limits<float>::epsilon() && | 288               std::numeric_limits<float>::epsilon() && | 
| 289           config.initial_peak_level_dbfs > | 289           config.initial_peak_level_dbfs > | 
| 290               -(100.f + std::numeric_limits<float>::epsilon())); | 290               -(100.f + std::numeric_limits<float>::epsilon())); | 
| 291 } | 291 } | 
| 292 | 292 | 
| 293 }  // namespace webrtc | 293 }  // namespace webrtc | 
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