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 
17 namespace webrtc {
18 class AudioProcessingImpl;
19 class AudioBuffer;
20 
21 class 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