Gustaf Ullberg | 777cf26 | 2018-11-22 15:02:34 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2018 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 MODULES_AUDIO_PROCESSING_AEC3_CLOCKDRIFT_DETECTOR_H_ |
| 12 | #define MODULES_AUDIO_PROCESSING_AEC3_CLOCKDRIFT_DETECTOR_H_ |
| 13 | |
Stephan Hartmann | 3ca2836 | 2020-05-31 09:01:38 | [diff] [blame] | 14 | #include <stddef.h> |
| 15 | |
Gustaf Ullberg | 777cf26 | 2018-11-22 15:02:34 | [diff] [blame] | 16 | #include <array> |
| 17 | |
| 18 | namespace webrtc { |
| 19 | |
| 20 | class ApmDataDumper; |
| 21 | struct DownsampledRenderBuffer; |
| 22 | struct EchoCanceller3Config; |
| 23 | |
| 24 | // Detects clockdrift by analyzing the estimated delay. |
| 25 | class ClockdriftDetector { |
| 26 | public: |
| 27 | enum class Level { kNone, kProbable, kVerified, kNumCategories }; |
| 28 | ClockdriftDetector(); |
| 29 | ~ClockdriftDetector(); |
| 30 | void Update(int delay_estimate); |
| 31 | Level ClockdriftLevel() const { return level_; } |
| 32 | |
| 33 | private: |
| 34 | std::array<int, 3> delay_history_; |
| 35 | Level level_; |
| 36 | size_t stability_counter_; |
| 37 | }; |
| 38 | } // namespace webrtc |
| 39 | |
| 40 | #endif // MODULES_AUDIO_PROCESSING_AEC3_CLOCKDRIFT_DETECTOR_H_ |