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79 lines
1.6 KiB
C++
79 lines
1.6 KiB
C++
/*****************************************************************************
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* spclock.h
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*
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* Stream Processor Clock
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*
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* (c) 2000 Andres Heinloo, GFZ Potsdam
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any later
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* version. For more information, see http://www.gnu.org/
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*
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* ================
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* Change log
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* ===============
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*
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* 01.01.2013 Adapted code to CAPS client library requirements (gempa GmbH)
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*****************************************************************************/
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#ifndef CAPS_MSEED_SPCLOCK_H
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#define CAPS_MSEED_SPCLOCK_H
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#include <gempa/caps/datetime.h>
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namespace Gempa {
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namespace CAPS {
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class SPClock
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{
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public:
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typedef Gempa::CAPS::Time INT_TIME;
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private:
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INT_TIME itime;
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int ticks;
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int corr;
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public:
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const int freqn;
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const int freqd;
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SPClock(int freqn_init, int freqd_init): ticks(0), corr(0),
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freqn(freqn_init), freqd(freqd_init)
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{}
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void sync_time(const INT_TIME &time)
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{
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itime = time;
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ticks = 0;
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corr = 0;
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}
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void tick()
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{
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++ticks;
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}
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INT_TIME get_time(int tick_diff) const
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{
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int64_t correctness = (double)freqd / (double)freqn * 1000000 * (ticks - tick_diff - corr);
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return itime + Gempa::CAPS::TimeSpan(long(correctness/1000000),long(correctness%1000000));
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}
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int correction() const
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{
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return corr;
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}
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};
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}
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}
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#endif // SPCLOCK_H
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