mirror of https://github.com/mpv-player/mpv
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/*
|
|
* 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"
|
|
|
|
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
|
|
|