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/* FCE Ultra Network Play Server
*
* Copyright notice for this file:
* Copyright (C) 2004 Xodnizel
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <sys/time.h>
#include <unistd.h>
#include "types.h"
#include "throttle.h"
#ifdef TODO
THROTTLE *MakeThrottle(uint32 fps)
{
}
/* Returns 1 if it's time to run, 0 if it's not time yet. */
int TestThrottle(THROTTLE *throt)
{
}
/* Pass it a pointer to an array of THROTTLE structs */
/* It will check */
void DoAllThrottles(THROTTLE *throt)
{
}
void KillThrottle(THROTTLE *throt)
{
}
#endif
static uint64 tfreq;
static uint64 desiredfps;
int32 FCEUI_GetDesiredFPS(void)
{
//if(PAL)
// return(838977920); // ~50.007
//else
return(1008307711); // ~60.1
}
void RefreshThrottleFPS(int divooder)
{
desiredfps=(FCEUI_GetDesiredFPS() / divooder)>>8;
tfreq=1000000;
tfreq<<=16; /* Adjustment for fps returned from FCEUI_GetDesiredFPS(). */
}
static uint64 GetCurTime(void)
{
uint64 ret;
struct timeval tv;
gettimeofday(&tv,0);
ret=(uint64)tv.tv_sec*1000000;
ret+=tv.tv_usec;
return(ret);
}
void SpeedThrottle(void)
{
static uint64 ttime,ltime;
waiter:
ttime=GetCurTime();
if( (ttime-ltime) < (tfreq/desiredfps) )
{
usleep(1000);
goto waiter;
}
if( (ttime-ltime) >= (tfreq*4/desiredfps))
ltime=ttime;
else
ltime+=tfreq/desiredfps;
}
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