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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 } |
| 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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