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
19namespace webrtc {
20
21class AudioBuffer;
22class RMSLevel;
23
24class 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