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Side by Side Diff: webrtc/modules/audio_processing/test/fake_rec_device_linear.cc

Issue 2834643002: audioproc_f with simulated mic analog gain (Closed)
Patch Set: FakeRecordingDevice refactoring, minor comments addressed Created 3 years, 7 months ago
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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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