mirror of
https://github.com/mpv-player/mpv
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67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* precise timer routines for Windows
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*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <windows.h>
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#include <sys/time.h>
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#include <mmsystem.h>
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#include <stdlib.h>
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#include "timer.h"
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void mp_sleep_us(int64_t us)
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{
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if (us < 0)
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return;
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// Sleep(0) won't sleep for one clocktick as the unix usleep
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// instead it will only make the thread ready
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// it may take some time until it actually starts to run again
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if (us < 1000)
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us = 1000;
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Sleep(us / 1000);
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}
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#if defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0 && defined(CLOCK_MONOTONIC)
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uint64_t mp_raw_time_us(void)
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{
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struct timespec ts;
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if (clock_gettime(CLOCK_MONOTONIC, &ts))
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abort();
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return ts.tv_sec * 1000000LL + ts.tv_nsec / 1000;
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}
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#else
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uint64_t mp_raw_time_us(void)
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{
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struct timeval tv;
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gettimeofday(&tv,NULL);
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return tv.tv_sec * 1000000LL + tv.tv_usec;
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}
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#endif
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static void restore_timer(void)
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{
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// The MSDN documents that begin/end "must" be matched. This satisfies
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// this requirement.
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timeEndPeriod(1);
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}
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void mp_raw_time_init(void)
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{
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timeBeginPeriod(1); // request 1ms timer resolution
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atexit(restore_timer);
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}
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