diff options
Diffstat (limited to 'win32/plugins/dfxvideo/winsrc/fps.c')
| -rw-r--r-- | win32/plugins/dfxvideo/winsrc/fps.c | 571 |
1 files changed, 571 insertions, 0 deletions
diff --git a/win32/plugins/dfxvideo/winsrc/fps.c b/win32/plugins/dfxvideo/winsrc/fps.c new file mode 100644 index 00000000..728a8dd0 --- /dev/null +++ b/win32/plugins/dfxvideo/winsrc/fps.c @@ -0,0 +1,571 @@ +/*************************************************************************** + fps.c - description + ------------------- + begin : Sun Oct 28 2001 + copyright : (C) 2001 by Pete Bernert + email : BlackDove@addcom.de + ***************************************************************************/ + +/*************************************************************************** + * * + * 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. See also the license.txt file for * + * additional informations. * + * * + ***************************************************************************/ +
+#define _IN_FPS + +#include "externals.h" +#include "fps.h"
+#include "gpu.h" + +//////////////////////////////////////////////////////////////////////// +// FPS stuff +//////////////////////////////////////////////////////////////////////// + +LARGE_INTEGER CPUFrequency, PerformanceCounter; + +float fFrameRateHz=0; +DWORD dwFrameRateTicks=16; +float fFrameRate; +int iFrameLimit; +int UseFrameLimit=0; +int UseFrameSkip=0; + +//////////////////////////////////////////////////////////////////////// +// FPS skipping / limit +//////////////////////////////////////////////////////////////////////// + +BOOL bInitCap = TRUE; +float fps_skip = 0; +float fps_cur = 0; +
+////////////////////////////////////////////////////////////////////////
+
+#define MAXLACE 16
+
+void CheckFrameRate(void)
+{
+ if(UseFrameSkip) // skipping mode?
+ {
+ if(!(dwActFixes&0x80)) // not old skipping mode?
+ {
+ dwLaceCnt++; // -> store cnt of vsync between frames
+ if(dwLaceCnt>=MAXLACE && UseFrameLimit) // -> if there are many laces without screen toggling,
+ { // do std frame limitation
+ if(dwLaceCnt==MAXLACE) bInitCap=TRUE;
+ FrameCap();
+ }
+ }
+ else if(UseFrameLimit) FrameCap();
+ calcfps(); // -> calc fps display in skipping mode
+ }
+ else // non-skipping mode:
+ {
+ if(UseFrameLimit) FrameCap(); // -> do it
+ if(ulKeybits&KEY_SHOWFPS) calcfps(); // -> and calc fps display
+ }
+}
+ +//////////////////////////////////////////////////////////////////////// +// WIN VERSION +//////////////////////////////////////////////////////////////////////// + +BOOL IsPerformanceCounter = FALSE; + +void FrameCap (void) // frame limit func +{ + static DWORD curticks, lastticks, _ticks_since_last_update; + static DWORD TicksToWait = 0; + static LARGE_INTEGER CurrentTime; + static LARGE_INTEGER LastTime; + static BOOL SkipNextWait = FALSE; + BOOL Waiting = TRUE; + +//--------------------------------------------------------- + if(bInitCap) + { + bInitCap=FALSE; + if (IsPerformanceCounter) + QueryPerformanceCounter(&LastTime); + lastticks = timeGetTime(); + TicksToWait=0; + return; + } +//--------------------------------------------------------- + + if (IsPerformanceCounter) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update = CurrentTime.LowPart - LastTime.LowPart; + + //--------------------------------------------------------- + curticks = timeGetTime(); + if(_ticks_since_last_update>(CPUFrequency.LowPart>>1)) + { + if(curticks < lastticks) + _ticks_since_last_update = dwFrameRateTicks+TicksToWait+1; + else _ticks_since_last_update = (CPUFrequency.LowPart * (curticks - lastticks))/1000; + } + //--------------------------------------------------------- + + if ((_ticks_since_last_update > TicksToWait) || + (CurrentTime.LowPart < LastTime.LowPart)) + { + LastTime.HighPart = CurrentTime.HighPart; + LastTime.LowPart = CurrentTime.LowPart; + + lastticks=curticks; + + if((_ticks_since_last_update-TicksToWait) > dwFrameRateTicks) + TicksToWait=0; + else TicksToWait=dwFrameRateTicks-(_ticks_since_last_update-TicksToWait); + } + else + { + while (Waiting) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update = CurrentTime.LowPart - LastTime.LowPart; + + //--------------------------------------------------------- + curticks = timeGetTime(); + if(_ticks_since_last_update>(CPUFrequency.LowPart>>1)) + { + if(curticks < lastticks) + _ticks_since_last_update = TicksToWait+1; + else _ticks_since_last_update = (CPUFrequency.LowPart * (curticks - lastticks))/1000; + } + //--------------------------------------------------------- + + if ((_ticks_since_last_update > TicksToWait) || + (CurrentTime.LowPart < LastTime.LowPart)) + { + Waiting = FALSE; + + lastticks=curticks; + + LastTime.HighPart = CurrentTime.HighPart; + LastTime.LowPart = CurrentTime.LowPart; + TicksToWait = dwFrameRateTicks; + } + } + } + } + else + { + curticks = timeGetTime(); + _ticks_since_last_update = curticks - lastticks; + + if ((_ticks_since_last_update > TicksToWait) || + (curticks < lastticks)) + { + lastticks = curticks; + + if((_ticks_since_last_update-TicksToWait) > dwFrameRateTicks) + TicksToWait=0; + else TicksToWait=dwFrameRateTicks-(_ticks_since_last_update-TicksToWait); + } + else + { + while (Waiting) + { + curticks = timeGetTime(); + _ticks_since_last_update = curticks - lastticks; + if ((_ticks_since_last_update > TicksToWait) || + (curticks < lastticks)) + { + Waiting = FALSE; + lastticks = curticks; + TicksToWait = dwFrameRateTicks; + } + } + } + } +} + +//////////////////////////////////////////////////////////////////////// + +#define MAXSKIP 120 + +void FrameSkip(void) +{ + static int iNumSkips=0,iAdditionalSkip=0; // number of additional frames to skip + static DWORD dwLastLace=0; // helper var for frame limitation + static DWORD curticks, lastticks, _ticks_since_last_update; + static LARGE_INTEGER CurrentTime; + static LARGE_INTEGER LastTime; + + if(!dwLaceCnt) return; // important: if no updatelace happened, we ignore it completely + + if(iNumSkips) // we are in pure skipping mode? + { + dwLastLace+=dwLaceCnt; // -> calc frame limit helper (number of laces) + bSkipNextFrame = TRUE; // -> we skip next frame as well + iNumSkips--; // -> ok, one done + } + else // ok, no additional skipping has to be done... + { // we check now, if some limitation is needed, or a new skipping has to get started + DWORD dwWaitTime; + + if(bInitCap || bSkipNextFrame) // first time or we skipped before? + { + if(UseFrameLimit && !bInitCap) // frame limit wanted and not first time called? + { + DWORD dwT=_ticks_since_last_update; // -> that's the time of the last drawn frame + dwLastLace+=dwLaceCnt; // -> and that's the number of updatelace since the start of the last drawn frame + + if (IsPerformanceCounter) // -> now we calc the time of the last drawn frame + the time we spent skipping + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update= dwT+CurrentTime.LowPart - LastTime.LowPart; + } + else + { + curticks = timeGetTime(); + _ticks_since_last_update= dwT+curticks - lastticks; + } + + dwWaitTime=dwLastLace*dwFrameRateTicks; // -> and now we calc the time the real psx would have needed + + if(_ticks_since_last_update<dwWaitTime) // -> we were too fast? + {
+ if((dwWaitTime-_ticks_since_last_update)> // -> some more security, to prevent
+ (60*dwFrameRateTicks)) // wrong waiting times
+ _ticks_since_last_update=dwWaitTime;
+ + while(_ticks_since_last_update<dwWaitTime) // -> loop until we have reached the real psx time + { // (that's the additional limitation, yup) + if (IsPerformanceCounter) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update = dwT+CurrentTime.LowPart - LastTime.LowPart; + } + else + { + curticks = timeGetTime(); + _ticks_since_last_update = dwT+curticks - lastticks; + } + } + } + else // we were still too slow ?!!? + { + if(iAdditionalSkip<MAXSKIP) // -> well, somewhen we really have to stop skipping on very slow systems + { + iAdditionalSkip++; // -> inc our watchdog var + dwLaceCnt=0; // -> reset lace count + if (IsPerformanceCounter) // -> ok, start time of the next frame + QueryPerformanceCounter(&LastTime); + lastticks = timeGetTime(); + return; // -> done, we will skip next frame to get more speed (SkipNextFrame still TRUE) + } + } + } + + bInitCap=FALSE; // -> ok, we have inited the frameskip func + iAdditionalSkip=0; // -> init additional skip + bSkipNextFrame=FALSE; // -> we don't skip the next frame + if (IsPerformanceCounter) // -> we store the start time of the next frame + QueryPerformanceCounter(&LastTime); + lastticks = timeGetTime(); + dwLaceCnt=0; // -> and we start to count the laces + dwLastLace=0; + _ticks_since_last_update=0; + return; // -> done, the next frame will get drawn + } + + bSkipNextFrame=FALSE; // init the frame skip signal to 'no skipping' first + + if (IsPerformanceCounter) // get the current time (we are now at the end of one drawn frame) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update = CurrentTime.LowPart - LastTime.LowPart; + } + else + { + curticks = timeGetTime(); + _ticks_since_last_update = curticks - lastticks; + } + + dwLastLace=dwLaceCnt; // store curr count (frame limitation helper) + dwWaitTime=dwLaceCnt*dwFrameRateTicks; // calc the 'real psx lace time' + + if(_ticks_since_last_update>dwWaitTime) // hey, we needed way too long for that frame... + {
+ if(UseFrameLimit) // if limitation, we skip just next frame,
+ { // and decide after, if we need to do more
+ iNumSkips=0;
+ }
+ else
+ { + iNumSkips=_ticks_since_last_update/dwWaitTime; // -> calc number of frames to skip to catch up
+ iNumSkips--; // -> since we already skip next frame, one down
+ if(iNumSkips>MAXSKIP) iNumSkips=MAXSKIP; // -> well, somewhere we have to draw a line
+ } + bSkipNextFrame = TRUE; // -> signal for skipping the next frame + } + else // we were faster than real psx? fine :) + if(UseFrameLimit) // frame limit used? so we wait til the 'real psx time' has been reached + {
+ if(dwLaceCnt>MAXLACE) // -> security check
+ _ticks_since_last_update=dwWaitTime;
+ + while(_ticks_since_last_update<dwWaitTime) // just do a waiting loop... + { + if (IsPerformanceCounter) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update = CurrentTime.LowPart - LastTime.LowPart; + } + else + { + curticks = timeGetTime(); + _ticks_since_last_update = curticks - lastticks; + } + } + } + + if (IsPerformanceCounter) // ok, start time of the next frame + QueryPerformanceCounter(&LastTime); + lastticks = timeGetTime(); + } + + dwLaceCnt=0; // init lace counter +} + +//////////////////////////////////////////////////////////////////////// + +void calcfps(void) // fps calculations +{ + static DWORD curticks,_ticks_since_last_update,lastticks; + static long fps_cnt = 0; + static DWORD fps_tck = 1; + static LARGE_INTEGER CurrentTime; + static LARGE_INTEGER LastTime; + static long fpsskip_cnt = 0; + static DWORD fpsskip_tck = 1; + + if(IsPerformanceCounter) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update=CurrentTime.LowPart-LastTime.LowPart; + + //--------------------------------------------------// + curticks = timeGetTime(); + if(_ticks_since_last_update>(CPUFrequency.LowPart>>1)) + _ticks_since_last_update = (CPUFrequency.LowPart * (curticks - lastticks))/1000; + lastticks=curticks; + //--------------------------------------------------// + + if(UseFrameSkip && !UseFrameLimit && _ticks_since_last_update) + fps_skip=min(fps_skip,(((float)CPUFrequency.LowPart) / ((float)_ticks_since_last_update) +1.0f)); + + LastTime.HighPart = CurrentTime.HighPart; + LastTime.LowPart = CurrentTime.LowPart; + } + else + { + curticks = timeGetTime(); + _ticks_since_last_update=curticks-lastticks; + + if(UseFrameSkip && !UseFrameLimit && _ticks_since_last_update) + fps_skip=min(fps_skip,((float)1000/(float)_ticks_since_last_update+1.0f)); + + lastticks = curticks; + } + + if(UseFrameSkip && UseFrameLimit) + { + fpsskip_tck += _ticks_since_last_update; + + if(++fpsskip_cnt==2) + { + if(IsPerformanceCounter) + fps_skip = ((float)CPUFrequency.LowPart) / ((float)fpsskip_tck) *2.0f; + else + fps_skip = (float)2000/(float)fpsskip_tck; + + fps_skip +=6.0f; + + fpsskip_cnt = 0; + fpsskip_tck = 1; + } + } + + fps_tck += _ticks_since_last_update; + + if(++fps_cnt==10) + { + if(IsPerformanceCounter) + fps_cur = ((float)CPUFrequency.LowPart) / ((float)fps_tck) *10.0f; + else + fps_cur = (float)10000/(float)fps_tck; + + fps_cnt = 0; + fps_tck = 1; + + if(UseFrameLimit && fps_cur>fFrameRateHz) // optical adjust ;) avoids flickering fps display + fps_cur=fFrameRateHz; + } +} + +//////////////////////////////////////////////////////////////////////// +// PC FPS skipping / limit +//////////////////////////////////////////////////////////////////////// + +void PCFrameCap (void) +{ + static DWORD curticks, lastticks, _ticks_since_last_update; + static DWORD TicksToWait = 0; + static LARGE_INTEGER CurrentTime; + static LARGE_INTEGER LastTime; + BOOL Waiting = TRUE; + + while (Waiting) + { + if (IsPerformanceCounter) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update = CurrentTime.LowPart - LastTime.LowPart; + + //------------------------------------------------// + curticks = timeGetTime(); + if(_ticks_since_last_update>(CPUFrequency.LowPart>>1)) + { + if(curticks < lastticks) + _ticks_since_last_update = TicksToWait+1; + else _ticks_since_last_update = (CPUFrequency.LowPart * (curticks - lastticks))/1000; + } + //------------------------------------------------// + + if ((_ticks_since_last_update > TicksToWait) || + (CurrentTime.LowPart < LastTime.LowPart)) + { + Waiting = FALSE; + lastticks=curticks; + LastTime.HighPart = CurrentTime.HighPart; + LastTime.LowPart = CurrentTime.LowPart; + TicksToWait = (unsigned long)(CPUFrequency.LowPart / fFrameRateHz); + } + } + else + { + curticks = timeGetTime(); + _ticks_since_last_update = curticks - lastticks; + if ((_ticks_since_last_update > TicksToWait) || + (curticks < lastticks)) + { + Waiting = FALSE; + lastticks = curticks; + TicksToWait = (1000 / (DWORD)fFrameRateHz); + } + } + } +} + +//////////////////////////////////////////////////////////////////////// + +void PCcalcfps(void) +{ + static DWORD curticks,_ticks_since_last_update,lastticks; + static long fps_cnt = 0; + static float fps_acc = 0; + static LARGE_INTEGER CurrentTime; + static LARGE_INTEGER LastTime; + float CurrentFPS=0; + + if(IsPerformanceCounter) + { + QueryPerformanceCounter(&CurrentTime); + _ticks_since_last_update=CurrentTime.LowPart-LastTime.LowPart; + + //--------------------------------------------------// + curticks = timeGetTime(); + if(_ticks_since_last_update>(CPUFrequency.LowPart>>1)) + _ticks_since_last_update = (CPUFrequency.LowPart * (curticks - lastticks))/1000; + lastticks=curticks; + //--------------------------------------------------// + + if(_ticks_since_last_update) + { + CurrentFPS = ((float)CPUFrequency.LowPart) / ((float)_ticks_since_last_update); + } + else CurrentFPS = 0; + LastTime.HighPart = CurrentTime.HighPart; + LastTime.LowPart = CurrentTime.LowPart; + } + else + { + curticks = timeGetTime(); + if(_ticks_since_last_update=curticks-lastticks) + CurrentFPS=(float)1000/(float)_ticks_since_last_update; + else CurrentFPS = 0; + lastticks = curticks; + } + + fps_acc += CurrentFPS; + + if(++fps_cnt==10) + { + fps_cur = fps_acc / 10; + fps_acc = 0; + fps_cnt = 0; + } + + fps_skip=CurrentFPS+1.0f; +} + +//////////////////////////////////////////////////////////////////////// + +void SetAutoFrameCap(void) +{ + if(iFrameLimit==1) + { + fFrameRateHz = fFrameRate; + if(IsPerformanceCounter) + dwFrameRateTicks=(DWORD)(CPUFrequency.LowPart / fFrameRateHz); + else dwFrameRateTicks=(1000 / (DWORD)fFrameRateHz); + return; + } + + if(dwActFixes&32) + { + if (PSXDisplay.Interlaced) + fFrameRateHz = PSXDisplay.PAL?50.0f:60.0f; + else fFrameRateHz = PSXDisplay.PAL?25.0f:30.0f; + } + else + { + fFrameRateHz = PSXDisplay.PAL?50.0f:59.94f; + if(IsPerformanceCounter) + dwFrameRateTicks=(DWORD)(CPUFrequency.LowPart / fFrameRateHz); + else dwFrameRateTicks=(1000 / (DWORD)fFrameRateHz); + } +} + +//////////////////////////////////////////////////////////////////////// + +void SetFPSHandler(void) +{ + if (QueryPerformanceFrequency (&CPUFrequency)) // timer mode + IsPerformanceCounter = TRUE; + else IsPerformanceCounter = FALSE; +} + +//////////////////////////////////////////////////////////////////////// + +void InitFPS(void) +{ + bInitCap = TRUE; + + if(fFrameRateHz==0) fFrameRateHz=fFrameRate; // set user framerate
+ + if(IsPerformanceCounter) + dwFrameRateTicks=(DWORD)(CPUFrequency.LowPart / fFrameRateHz); + else dwFrameRateTicks=(1000 / (DWORD)fFrameRateHz); +} + +//////////////////////////////////////////////////////////////////////// |