osdep/timer-linux.c

   1 /*
   2  * precise timer routines for Linux
   3  * copyright (C) LGB & A'rpi/ASTRAL
   4  *
   5  * This file is part of MPlayer.
   6  *
   7  * MPlayer is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * MPlayer is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <unistd.h>
  23 #ifdef __BEOS__
  24 #define usleep(t) snooze(t)
  25 #endif
  26 #include <stdlib.h>
  27 #include <time.h>
  28 #include <sys/time.h>
  29 #include "config.h"
  30 #include "timer.h"
  31
  32 const char timer_name[] =
  33 #ifdef HAVE_NANOSLEEP
  34     "nanosleep()";
  35 #else
  36     "usleep()";
  37 #endif
  38
  39 int usec_sleep(int usec_delay)
  40 {
  41 #ifdef HAVE_NANOSLEEP
  42     struct timespec ts;
  43     ts.tv_sec  =  usec_delay / 1000000;
  44     ts.tv_nsec = (usec_delay % 1000000) * 1000;
  45     return nanosleep(&ts, NULL);
  46 #else
  47     return usleep(usec_delay);
  48 #endif
  49 }
  50
  51 // Returns current time in microseconds
  52 unsigned int GetTimer(void)
  53 {
  54   struct timeval tv;
  55   gettimeofday(&tv,NULL);
  56   return tv.tv_sec * 1000000 + tv.tv_usec;
  57 }
  58
  59 // Returns current time in milliseconds
  60 unsigned int GetTimerMS(void)
  61 {
  62   struct timeval tv;
  63   gettimeofday(&tv,NULL);
  64   return tv.tv_sec * 1000 + tv.tv_usec / 1000;
  65 }
  66
  67 // Initialize timer, must be called at least once at start
  68 void InitTimer(void)
  69 {
  70 }