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/*
* precise timer routines for Linux
* copyright (C) LGB & A'rpi/ASTRAL
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <unistd.h>
#ifdef __BEOS__
#define usleep(t) snooze(t)
#endif
#include <stdlib.h>
#include <time.h>
#include <sys/time.h>
#include "config.h"
#include "timer.h"
const char *timer_name =
#ifdef HAVE_NANOSLEEP
"nanosleep()";
#else
"usleep()";
#endif
int usec_sleep(int usec_delay)
{
#ifdef HAVE_NANOSLEEP
struct timespec ts;
ts.tv_sec = usec_delay / 1000000;
ts.tv_nsec = (usec_delay % 1000000) * 1000;
return nanosleep(&ts, NULL);
#else
return usleep(usec_delay);
#endif
}
// Returns current time in microseconds
unsigned int GetTimer(void)
{
struct timeval tv;
//float s;
gettimeofday(&tv,NULL);
//s = tv.tv_usec; s *= 0.000001; s += tv.tv_sec;
return tv.tv_sec * 1000000 + tv.tv_usec;
}
// Returns current time in milliseconds
unsigned int GetTimerMS(void)
{
struct timeval tv;
//float s;
gettimeofday(&tv,NULL);
//s = tv.tv_usec; s *= 0.000001; s += tv.tv_sec;
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
static unsigned int RelativeTime = 0;
// Returns time spent between now and last call in seconds
float GetRelativeTime(void)
{
unsigned int t,r;
t = GetTimer();
//t *= 16; printf("time = %ud\n", t);
r = t - RelativeTime;
RelativeTime = t;
return (float) r * 0.000001F;
}
// Initialize timer, must be called at least once at start
void InitTimer(void)
{
GetRelativeTime();
}
#if 0
#include <stdio.h>
int main(void)
{
float t = 0;
InitTimer();
while (1) {
t += GetRelativeTime();
printf("time = %10.6f\r", t);
fflush(stdout); }
}
#endif
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