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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 #include "webrtc/modules/audio_processing/test/fake_rec_device_linear.h" | |
12 | |
13 #include "webrtc/base/logging.h" | |
14 | |
15 namespace webrtc { | |
16 namespace test { | |
17 | |
18 FakeRecordingDeviceLinear::FakeRecordingDeviceLinear(int initial_mic_level) | |
19 : FakeRecordingDevice(initial_mic_level) {} | |
20 | |
21 FakeRecordingDeviceLinear::~FakeRecordingDeviceLinear() = default; | |
22 | |
23 void FakeRecordingDeviceLinear::ModifySampleInt16(int16_t* sample) { | |
24 float sample_f = static_cast<float>(*sample); | |
25 rtc::Optional<int> undo_level = undo_mic_level(); | |
26 | |
27 // Virtually restore the unmodified microphone level. | |
28 if (undo_level) { | |
29 if (*undo_level == 0) { | |
30 LOG(LS_INFO) << "undo level is zero, cannot undo mic level"; | |
31 } else { | |
32 sample_f = ClipSampleInt16( | |
33 sample_f * 255.0f / static_cast<float>(*undo_level)); | |
34 } | |
35 } | |
AleBzk
2017/05/17 11:52:24
Let's continue the discussion about clipping betwe
| |
36 | |
37 // Simulate the mic gain. | |
38 *sample = ClipSampleInt16( | |
39 sample_f * static_cast<float>(mic_level()) / 255.0f); | |
40 } | |
41 | |
42 void FakeRecordingDeviceLinear::ModifySampleFloat(float* sample) { | |
43 rtc::Optional<int> undo_level = undo_mic_level(); | |
44 | |
45 // Virtually restore the unmodified microphone level. | |
46 if (undo_level) { | |
47 if (*undo_level == 0) { | |
48 LOG(LS_INFO) << "undo level is zero, cannot undo mic level"; | |
49 } else { | |
50 *sample = ClipSampleFloat( | |
51 *sample * 255.0f / static_cast<float>(*undo_level)); | |
52 } | |
53 } | |
54 | |
55 // Simulate the mic gain. | |
56 *sample = ClipSampleFloat(*sample * static_cast<float>(mic_level()) / 255.0f); | |
57 } | |
58 | |
59 } // namespace test | |
60 } // namespace webrtc | |
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