d900e8bea8
BUG= R=mflodman@webrtc.org, tina.legrand@webrtc.org Review URL: https://webrtc-codereview.appspot.com/1760006 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4293 4adac7df-926f-26a2-2b94-8c16560cd09d
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// The TimeScheduler class keeps track of periodic events. It is non-drifting
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// and keeps track of any missed periods so that it is possible to catch up.
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// (compare to a metronome)
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#ifndef WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_
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#define WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_
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#include "webrtc/system_wrappers/interface/tick_util.h"
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namespace webrtc {
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class CriticalSectionWrapper;
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class TimeScheduler
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{
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public:
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TimeScheduler(const uint32_t periodicityInMs);
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~TimeScheduler();
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// Signal that a periodic event has been triggered.
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int32_t UpdateScheduler();
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// Set updateTimeInMs to the amount of time until UpdateScheduler() should
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// be called. This time will never be negative.
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int32_t TimeToNextUpdate(int32_t& updateTimeInMS) const;
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private:
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CriticalSectionWrapper* _crit;
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bool _isStarted;
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TickTime _lastPeriodMark;
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uint32_t _periodicityInMs;
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int64_t _periodicityInTicks;
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uint32_t _missedPeriods;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_CONFERENCE_MIXER_SOURCE_TIME_SCHEDULER_H_
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