1/*
2 *  Copyright (c) 2011 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_MAIN_SOURCE_LEVEL_ESTIMATOR_IMPL_H_
12#define WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_LEVEL_ESTIMATOR_IMPL_H_
13
14#include "audio_processing.h"
15#include "processing_component.h"
16
17namespace webrtc {
18class AudioProcessingImpl;
19class AudioBuffer;
20
21class LevelEstimatorImpl : public LevelEstimator,
22                           public ProcessingComponent {
23 public:
24  explicit LevelEstimatorImpl(const AudioProcessingImpl* apm);
25  virtual ~LevelEstimatorImpl();
26
27  int ProcessStream(AudioBuffer* audio);
28
29  // LevelEstimator implementation.
30  virtual bool is_enabled() const;
31
32  // ProcessingComponent implementation.
33  virtual int get_version(char* version, int version_len_bytes) const;
34
35 private:
36  // LevelEstimator implementation.
37  virtual int Enable(bool enable);
38  virtual int RMS();
39
40  // ProcessingComponent implementation.
41  virtual void* CreateHandle() const;
42  virtual int InitializeHandle(void* handle) const;
43  virtual int ConfigureHandle(void* handle) const;
44  virtual int DestroyHandle(void* handle) const;
45  virtual int num_handles_required() const;
46  virtual int GetHandleError(void* handle) const;
47
48  const AudioProcessingImpl* apm_;
49};
50}  // namespace webrtc
51
52#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_LEVEL_ESTIMATOR_IMPL_H_
53