/* * 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 #ifdef __BEOS__ #define usleep(t) snooze(t) #endif #include #include #include #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 int main(void) { float t = 0; InitTimer(); while (1) { t += GetRelativeTime(); printf("time = %10.6f\r", t); fflush(stdout); } } #endif