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| 1 /* | 1 /* |
| 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 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 | 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 | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
| 11 // The TimeScheduler class keeps track of periodic events. It is non-drifting | 11 // The TimeScheduler class keeps track of periodic events. It is non-drifting |
| 12 // and keeps track of any missed periods so that it is possible to catch up. | 12 // and keeps track of any missed periods so that it is possible to catch up. |
| 13 // (compare to a metronome) | 13 // (compare to a metronome) |
| 14 | 14 |
| 15 #ifndef WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ | 15 #ifndef WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ |
| 16 #define WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ | 16 #define WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ |
| 17 | 17 |
| 18 namespace webrtc { | 18 namespace webrtc { |
| 19 class CriticalSectionWrapper; | 19 class CriticalSectionWrapper; |
| 20 class TimeScheduler | 20 class TimeScheduler { |
| 21 { | 21 public: |
| 22 public: | 22 TimeScheduler(const int64_t periodicityInMs); |
| 23 TimeScheduler(const int64_t periodicityInMs); | 23 ~TimeScheduler(); |
| 24 ~TimeScheduler(); | |
| 25 | 24 |
| 26 // Signal that a periodic event has been triggered. | 25 // Signal that a periodic event has been triggered. |
| 27 int32_t UpdateScheduler(); | 26 int32_t UpdateScheduler(); |
| 28 | 27 |
| 29 // Set updateTimeInMs to the amount of time until UpdateScheduler() should | 28 // Set updateTimeInMs to the amount of time until UpdateScheduler() should |
| 30 // be called. This time will never be negative. | 29 // be called. This time will never be negative. |
| 31 int32_t TimeToNextUpdate(int64_t& updateTimeInMS) const; | 30 int32_t TimeToNextUpdate(int64_t& updateTimeInMS) const; |
| 32 | 31 |
| 33 private: | 32 private: |
| 34 CriticalSectionWrapper* _crit; | 33 CriticalSectionWrapper* _crit; |
| 35 | 34 |
| 36 bool _isStarted; | 35 bool _isStarted; |
| 37 int64_t _lastPeriodMark; // In ns | 36 int64_t _lastPeriodMark; // In ns |
| 38 | 37 |
| 39 int64_t _periodicityInMs; | 38 int64_t _periodicityInMs; |
| 40 int64_t _periodicityInTicks; | 39 int64_t _periodicityInTicks; |
| 41 uint32_t _missedPeriods; | 40 uint32_t _missedPeriods; |
| 42 }; | 41 }; |
| 43 } // namespace webrtc | 42 } // namespace webrtc |
| 44 | 43 |
| 45 #endif // WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ | 44 #endif // WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ |
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