mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 09:32:40 +00:00
fc4f741709
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@29198 b3059339-0415-0410-9bf9-f77b7e298cf2
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/*
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* precise timer routines for Linux
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* copyright (C) LGB & A'rpi/ASTRAL
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*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <unistd.h>
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#ifdef __BEOS__
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#define usleep(t) snooze(t)
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#endif
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#include <stdlib.h>
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#include <time.h>
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#include <sys/time.h>
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#include "config.h"
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const char *timer_name =
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#ifdef HAVE_NANOSLEEP
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"nanosleep()";
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#else
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"usleep()";
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#endif
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int usec_sleep(int usec_delay)
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{
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#ifdef HAVE_NANOSLEEP
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struct timespec ts;
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ts.tv_sec = usec_delay / 1000000;
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ts.tv_nsec = (usec_delay % 1000000) * 1000;
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return nanosleep(&ts, NULL);
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#else
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return usleep(usec_delay);
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#endif
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}
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// Returns current time in microseconds
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unsigned int GetTimer(void)
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{
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struct timeval tv;
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//float s;
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gettimeofday(&tv,NULL);
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//s = tv.tv_usec; s *= 0.000001; s += tv.tv_sec;
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return tv.tv_sec * 1000000 + tv.tv_usec;
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}
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// Returns current time in milliseconds
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unsigned int GetTimerMS(void)
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{
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struct timeval tv;
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//float s;
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gettimeofday(&tv,NULL);
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//s = tv.tv_usec; s *= 0.000001; s += tv.tv_sec;
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return tv.tv_sec * 1000 + tv.tv_usec / 1000;
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}
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static unsigned int RelativeTime = 0;
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// Returns time spent between now and last call in seconds
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float GetRelativeTime(void)
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{
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unsigned int t,r;
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t = GetTimer();
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//t *= 16; printf("time = %ud\n", t);
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r = t - RelativeTime;
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RelativeTime = t;
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return (float) r * 0.000001F;
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}
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// Initialize timer, must be called at least once at start
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void InitTimer(void)
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{
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GetRelativeTime();
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}
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#if 0
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#include <stdio.h>
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int main(void)
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{
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float t = 0;
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InitTimer();
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while (1) {
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t += GetRelativeTime();
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printf("time = %10.6f\r", t);
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fflush(stdout); }
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}
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#endif
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