1 /* 2 * Copyright (c) 2012 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 WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_ESTIMATOR_IMPL_H_ 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_ESTIMATOR_IMPL_H_ 13 14 #include "webrtc/base/constructormagic.h" 15 #include "webrtc/base/criticalsection.h" 16 #include "webrtc/base/scoped_ptr.h" 17 #include "webrtc/modules/audio_processing/include/audio_processing.h" 18 19 namespace webrtc { 20 21 class AudioBuffer; 22 class RMSLevel; 23 24 class LevelEstimatorImpl : public LevelEstimator { 25 public: 26 explicit LevelEstimatorImpl(rtc::CriticalSection* crit); 27 ~LevelEstimatorImpl() override; 28 29 // TODO(peah): Fold into ctor, once public API is removed. 30 void Initialize(); 31 void ProcessStream(AudioBuffer* audio); 32 33 // LevelEstimator implementation. 34 int Enable(bool enable) override; 35 bool is_enabled() const override; 36 int RMS() override; 37 38 private: 39 rtc::CriticalSection* const crit_ = nullptr; 40 bool enabled_ GUARDED_BY(crit_) = false; 41 rtc::scoped_ptr<RMSLevel> rms_ GUARDED_BY(crit_); 42 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(LevelEstimatorImpl); 43 }; 44 } // namespace webrtc 45 46 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_ESTIMATOR_IMPL_H_ 47
