103 lines
2.0 KiB
C++
103 lines
2.0 KiB
C++
/* FCE Ultra Network Play Server
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*
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* Copyright notice for this file:
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* Copyright (C) 2004 Xodnizel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <sys/time.h>
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#include <unistd.h>
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#include "types.h"
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#include "throttle.h"
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#ifdef TODO
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THROTTLE *MakeThrottle(uint32 fps)
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{
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}
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/* Returns 1 if it's time to run, 0 if it's not time yet. */
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int TestThrottle(THROTTLE *throt)
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{
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}
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/* Pass it a pointer to an array of THROTTLE structs */
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/* It will check */
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void DoAllThrottles(THROTTLE *throt)
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{
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}
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void KillThrottle(THROTTLE *throt)
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{
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}
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#endif
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static uint64 tfreq;
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static uint64 desiredfps;
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int32 FCEUI_GetDesiredFPS(void)
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{
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//if(PAL)
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// return(838977920); // ~50.007
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//else
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return(1008307711); // ~60.1
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}
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void RefreshThrottleFPS(int divooder)
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{
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desiredfps=(FCEUI_GetDesiredFPS() / divooder)>>8;
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tfreq=1000000;
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tfreq<<=16; /* Adjustment for fps returned from FCEUI_GetDesiredFPS(). */
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}
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static uint64 GetCurTime(void)
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{
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uint64 ret;
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struct timeval tv;
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gettimeofday(&tv,0);
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ret=(uint64)tv.tv_sec*1000000;
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ret+=tv.tv_usec;
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return(ret);
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}
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void SpeedThrottle(void)
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{
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static uint64 ttime,ltime;
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waiter:
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ttime=GetCurTime();
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if( (ttime-ltime) < (tfreq/desiredfps) )
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{
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usleep(1000);
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goto waiter;
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}
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if( (ttime-ltime) >= (tfreq*4/desiredfps))
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ltime=ttime;
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else
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ltime+=tfreq/desiredfps;
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}
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