OLD | NEW |
---|---|
(Empty) | |
1 /* | |
2 * Copyright (c) 2017 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_TEST_ANALOG_VOLUME_MAPPER_H_ | |
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ANALOG_VOLUME_MAPPER_H_ | |
13 | |
14 #include "webrtc/base/checks.h" | |
15 | |
16 namespace webrtc { | |
17 | |
18 // Class for simulating an analog gain controller controlled by | |
19 // webrtc::GainControl. The class wraps a mapping from the current | |
20 // level to a floating point scaling factor abstracting | |
21 // non-linearities in the gain curve of real analog microphones. The | |
22 // intended mode of operation is to use get_scaling_factor() to apply | |
23 // a gain factor to a signal. | |
24 class AnalogLevelMapper { | |
AleBzk
2017/04/21 10:35:49
I thought about the class name and personally I'm
peah-webrtc
2017/04/21 12:04:39
I definitely think that this CL should include the
peah-webrtc
2017/04/21 12:04:39
An alternative to an interface would be to have a
aleloi
2017/04/24 11:34:45
Can I make a dependent CL for that after https://c
aleloi
2017/04/24 11:34:45
That makes sense. I've changed into const enum to
| |
25 public: | |
26 virtual ~AnalogLevelMapper() = default; | |
27 | |
28 // As the analog level limits in webrtc::GainControl, |level| must | |
29 // be within [0, 65535]. | |
peah-webrtc
2017/04/21 12:04:39
Is the maximum level really that high, I thought i
aleloi
2017/04/24 11:34:45
In the documentation to set_analog_level_limits it
| |
30 void set_analog_level(int level) { | |
31 RTC_DCHECK_LE(level_, 65535); | |
32 RTC_DCHECK_LE(0, level_); | |
33 level_ = level; | |
34 } | |
35 | |
36 virtual int analog_level() const { return level_; } | |
37 | |
38 virtual float get_scaling_factor() const = 0; | |
39 | |
40 private: | |
41 int level_ = 0; | |
42 }; | |
43 } // namespace webrtc | |
44 | |
45 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_TEST_ANALOG_VOLUME_MAPPER_H_ | |
OLD | NEW |