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/* OpenCP Module Player
* copyright (c) '94-'10 Niklas Beisert <nbeisert@physik.tu-muenchen.de>
*
* Frames per second lock
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* revision history: (please note changes here)
* -ss050118 Stian Skjelstad <stian@nixia.no>
* -first release
*/
#include "config.h"
#include "types.h"
#include <sys/time.h>
#include <unistd.h>
#include "boot/plinkman.h"
#include "boot/psetting.h"
#include "filesel/pfilesel.h"
#include "stuff/err.h"
#include "framelock.h"
#ifdef DISABLE_SIGALRM
#include "timer.h"
#endif
static int Current = 0;
int fsFPS=25;
int fsFPSCurrent=0;
static int fpsInit(void)
{
fsFPS=cfGetProfileInt("screen", "fps", 20, 0);
if (fsFPS<=0)
fsFPS=20;
return errOk;
}
void framelock(void)
{
static struct timeval target = {0, 0};
static struct timeval curr;
rerun:
gettimeofday(&curr, 0);
if (curr.tv_sec!=target.tv_sec)
{
fsFPSCurrent=Current;
Current=1;
target.tv_sec=curr.tv_sec;
target.tv_usec=1000000/fsFPS;
return;
} else if (curr.tv_usec<target.tv_usec)
{
usleep(target.tv_usec-curr.tv_usec);
goto rerun;
}
target.tv_usec+=1000000/fsFPS;
#ifdef DISABLE_SIGALRM
tmTimerHandler();
#endif
Current++;
}
#ifndef SUPPORT_STATIC_PLUGINS
char *dllinfo = "";
#endif
DLLEXTINFO_PREFIX struct linkinfostruct dllextinfo = {"fps", "OpenCP Frames Per Second lock (c) 2005-09 Stian Skjelstad", DLLVERSION, 0, Init: fpsInit};
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