| /* |
| * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| // The TimeScheduler class keeps track of periodic events. It is non-drifting |
| // and keeps track of any missed periods so that it is possible to catch up. |
| // (compare to a metronome) |
| |
| #ifndef WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ |
| #define WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ |
| |
| #include "tick_util.h" |
| |
| namespace webrtc { |
| class CriticalSectionWrapper; |
| class TimeScheduler |
| { |
| public: |
| TimeScheduler(const WebRtc_UWord32 periodicityInMs); |
| ~TimeScheduler(); |
| |
| // Signal that a periodic event has been triggered. |
| WebRtc_Word32 UpdateScheduler(); |
| |
| // Set updateTimeInMs to the amount of time until UpdateScheduler() should |
| // be called. This time will never be negative. |
| WebRtc_Word32 TimeToNextUpdate(WebRtc_Word32& updateTimeInMS) const; |
| |
| private: |
| CriticalSectionWrapper* _crit; |
| |
| bool _isStarted; |
| TickTime _lastPeriodMark; |
| |
| WebRtc_UWord32 _periodicityInMs; |
| WebRtc_Word64 _periodicityInTicks; |
| WebRtc_UWord32 _missedPeriods; |
| }; |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_ |