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_GAIN_CONTROL_IMPL_H_
12#define WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_GAIN_CONTROL_IMPL_H_
13
14#include <vector>
15
16#include "audio_processing.h"
17#include "processing_component.h"
18
19namespace webrtc {
20class AudioProcessingImpl;
21class AudioBuffer;
22
23class GainControlImpl : public GainControl,
24                        public ProcessingComponent {
25 public:
26  explicit GainControlImpl(const AudioProcessingImpl* apm);
27  virtual ~GainControlImpl();
28
29  int ProcessRenderAudio(AudioBuffer* audio);
30  int AnalyzeCaptureAudio(AudioBuffer* audio);
31  int ProcessCaptureAudio(AudioBuffer* audio);
32
33  // ProcessingComponent implementation.
34  virtual int Initialize();
35  virtual int get_version(char* version, int version_len_bytes) const;
36
37  // GainControl implementation.
38  virtual bool is_enabled() const;
39  virtual int stream_analog_level();
40
41 private:
42  // GainControl implementation.
43  virtual int Enable(bool enable);
44  virtual int set_stream_analog_level(int level);
45  virtual int set_mode(Mode mode);
46  virtual Mode mode() const;
47  virtual int set_target_level_dbfs(int level);
48  virtual int target_level_dbfs() const;
49  virtual int set_compression_gain_db(int gain);
50  virtual int compression_gain_db() const;
51  virtual int enable_limiter(bool enable);
52  virtual bool is_limiter_enabled() const;
53  virtual int set_analog_level_limits(int minimum, int maximum);
54  virtual int analog_level_minimum() const;
55  virtual int analog_level_maximum() const;
56  virtual bool stream_is_saturated() const;
57
58  // ProcessingComponent implementation.
59  virtual void* CreateHandle() const;
60  virtual int InitializeHandle(void* handle) const;
61  virtual int ConfigureHandle(void* handle) const;
62  virtual int DestroyHandle(void* handle) const;
63  virtual int num_handles_required() const;
64  virtual int GetHandleError(void* handle) const;
65
66  const AudioProcessingImpl* apm_;
67  Mode mode_;
68  int minimum_capture_level_;
69  int maximum_capture_level_;
70  bool limiter_enabled_;
71  int target_level_dbfs_;
72  int compression_gain_db_;
73  std::vector<int> capture_levels_;
74  int analog_capture_level_;
75  bool was_analog_level_set_;
76  bool stream_is_saturated_;
77};
78}  // namespace webrtc
79
80#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_MAIN_SOURCE_GAIN_CONTROL_IMPL_H_
81