+++ /dev/null
-/***************************************************************************\r
- fps.c - description\r
- -------------------\r
- begin : Sun Mar 08 2009\r
- copyright : (C) 1999-2009 by Pete Bernert\r
- web : www.pbernert.com \r
- ***************************************************************************/\r
-\r
-/***************************************************************************\r
- * *\r
- * This program is free software; you can redistribute it and/or modify *\r
- * it under the terms of the GNU General Public License as published by *\r
- * the Free Software Foundation; either version 2 of the License, or *\r
- * (at your option) any later version. See also the license.txt file for *\r
- * additional informations. *\r
- * *\r
- ***************************************************************************/\r
-\r
-//*************************************************************************// \r
-// History of changes:\r
-//\r
-// 2009/03/08 - Pete \r
-// - generic cleanup for the Peops release\r
-//\r
-//*************************************************************************// \r
-\r
-#include "stdafx.h"\r
-\r
-#define _IN_FPS\r
-\r
-#include "externals.h"\r
-\r
-////////////////////////////////////////////////////////////////////////\r
-// FPS stuff\r
-////////////////////////////////////////////////////////////////////////\r
-\r
-BOOL bIsPerformanceCounter=FALSE;\r
-float fFrameRateHz=0;\r
-DWORD dwFrameRateTicks=16;\r
-float fFrameRate;\r
-int iFrameLimit;\r
-BOOL bUseFrameLimit=FALSE;\r
-BOOL bUseFrameSkip=0;\r
-DWORD dwLaceCnt=0;\r
-\r
-////////////////////////////////////////////////////////////////////////\r
-// FPS skipping / limit\r
-////////////////////////////////////////////////////////////////////////\r
-\r
-BOOL bInitCap = TRUE; \r
-float fps_skip = 0;\r
-float fps_cur = 0;\r
-\r
-#define TIMEBASE 100000\r
-\r
-unsigned long timeGetTime()\r
-{\r
- struct timeval tv;\r
- gettimeofday(&tv, 0); // well, maybe there are better ways\r
- return tv.tv_sec * 100000 + tv.tv_usec/10; // to do that in linux, but at least it works\r
-}\r
-\r
-void FrameCap(void)\r
-{\r
- static unsigned long curticks, lastticks, _ticks_since_last_update;\r
- static unsigned long TicksToWait = 0;\r
- bool Waiting = TRUE;\r
-\r
- {\r
- curticks = timeGetTime();\r
- _ticks_since_last_update = curticks - lastticks;\r
-\r
- if((_ticks_since_last_update > TicksToWait) ||\r
- (curticks <lastticks))\r
- {\r
- lastticks = curticks;\r
-\r
- if((_ticks_since_last_update-TicksToWait) > dwFrameRateTicks)\r
- TicksToWait=0;\r
- else TicksToWait=dwFrameRateTicks-(_ticks_since_last_update-TicksToWait);\r
- }\r
- else\r
- {\r
- while (Waiting) \r
- {\r
- curticks = timeGetTime(); \r
- _ticks_since_last_update = curticks - lastticks; \r
- if ((_ticks_since_last_update > TicksToWait) ||\r
- (curticks < lastticks)) \r
- { \r
- Waiting = FALSE;\r
- lastticks = curticks;\r
- TicksToWait = dwFrameRateTicks; \r
- } \r
- } \r
- } \r
- } \r
-} \r
-\r
-#define MAXSKIP 120\r
-#define MAXLACE 16\r
-\r
-void FrameSkip(void)\r
-{\r
- static int iNumSkips=0,iAdditionalSkip=0; // number of additional frames to skip\r
- static DWORD dwLastLace=0; // helper var for frame limitation\r
- static DWORD curticks, lastticks, _ticks_since_last_update;\r
-\r
- if(!dwLaceCnt) return; // important: if no updatelace happened, we ignore it completely\r
-\r
- if(iNumSkips) // we are in skipping mode?\r
- {\r
- dwLastLace+=dwLaceCnt; // -> calc frame limit helper (number of laces)\r
- bSkipNextFrame = TRUE; // -> we skip next frame\r
- iNumSkips--; // -> ok, one done\r
- }\r
- else // ok, no additional skipping has to be done... \r
- { // we check now, if some limitation is needed, or a new skipping has to get started\r
- DWORD dwWaitTime;\r
-\r
- if(bInitCap || bSkipNextFrame) // first time or we skipped before?\r
- {\r
- if(bUseFrameLimit && !bInitCap) // frame limit wanted and not first time called?\r
- {\r
- DWORD dwT=_ticks_since_last_update; // -> that's the time of the last drawn frame\r
- dwLastLace+=dwLaceCnt; // -> and that's the number of updatelace since the start of the last drawn frame\r
-\r
- curticks = timeGetTime();\r
- _ticks_since_last_update= dwT+curticks - lastticks;\r
-\r
- dwWaitTime=dwLastLace*dwFrameRateTicks; // -> and now we calc the time the real psx would have needed\r
-\r
- if(_ticks_since_last_update<dwWaitTime) // -> we were too fast?\r
- { \r
- if((dwWaitTime-_ticks_since_last_update)> // -> some more security, to prevent\r
- (60*dwFrameRateTicks)) // wrong waiting times\r
- _ticks_since_last_update=dwWaitTime;\r
-\r
- while(_ticks_since_last_update<dwWaitTime) // -> loop until we have reached the real psx time\r
- { // (that's the additional limitation, yup)\r
- curticks = timeGetTime();\r
- _ticks_since_last_update = dwT+curticks - lastticks;\r
- }\r
- }\r
- else // we were still too slow ?!!?\r
- {\r
- if(iAdditionalSkip<MAXSKIP) // -> well, somewhen we really have to stop skipping on very slow systems\r
- {\r
- iAdditionalSkip++; // -> inc our watchdog var\r
- dwLaceCnt=0; // -> reset lace count\r
- lastticks = timeGetTime();\r
- return; // -> done, we will skip next frame to get more speed\r
- }\r
- }\r
- }\r
-\r
- bInitCap=FALSE; // -> ok, we have inited the frameskip func\r
- iAdditionalSkip=0; // -> init additional skip\r
- bSkipNextFrame=FALSE; // -> we don't skip the next frame\r
- lastticks = timeGetTime();\r
- dwLaceCnt=0; // -> and we start to count the laces \r
- dwLastLace=0; \r
- _ticks_since_last_update=0;\r
- return; // -> done, the next frame will get drawn\r
- }\r
-\r
- bSkipNextFrame=FALSE; // init the frame skip signal to 'no skipping' first\r
-\r
- curticks = timeGetTime();\r
- _ticks_since_last_update = curticks - lastticks;\r
-\r
- dwLastLace=dwLaceCnt; // store curr count (frame limitation helper)\r
- dwWaitTime=dwLaceCnt*dwFrameRateTicks; // calc the 'real psx lace time'\r
-\r
- if(_ticks_since_last_update>dwWaitTime) // hey, we needed way too long for that frame...\r
- {\r
- if(bUseFrameLimit) // if limitation, we skip just next frame,\r
- { // and decide after, if we need to do more\r
- iNumSkips=0;\r
- }\r
- else\r
- {\r
- iNumSkips=_ticks_since_last_update/dwWaitTime; // -> calc number of frames to skip to catch up\r
- iNumSkips--; // -> since we already skip next frame, one down\r
- if(iNumSkips>MAXSKIP) iNumSkips=MAXSKIP; // -> well, somewhere we have to draw a line\r
- }\r
- bSkipNextFrame = TRUE; // -> signal for skipping the next frame\r
- }\r
- else // we were faster than real psx? fine :)\r
- if(bUseFrameLimit) // frame limit used? so we wait til the 'real psx time' has been reached\r
- {\r
- if(dwLaceCnt>MAXLACE) // -> security check\r
- _ticks_since_last_update=dwWaitTime;\r
-\r
- while(_ticks_since_last_update<dwWaitTime) // just do a waiting loop...\r
- {\r
- curticks = timeGetTime();\r
- _ticks_since_last_update = curticks - lastticks;\r
- }\r
- }\r
-\r
- lastticks = timeGetTime();\r
- }\r
-\r
- dwLaceCnt=0; // init lace counter\r
-}\r
-\r
-void calcfps(void) \r
-{ \r
- static unsigned long curticks,_ticks_since_last_update,lastticks; \r
- static long fps_cnt = 0;\r
- static unsigned long fps_tck = 1; \r
- static long fpsskip_cnt = 0;\r
- static unsigned long fpsskip_tck = 1;\r
- \r
- { \r
- curticks = timeGetTime(); \r
- _ticks_since_last_update=curticks-lastticks; \r
- \r
- if(bUseFrameSkip && !bUseFrameLimit && _ticks_since_last_update) \r
- fps_skip=min(fps_skip,((float)TIMEBASE/(float)_ticks_since_last_update+1.0f));\r
- \r
- lastticks = curticks; \r
- } \r
- \r
- if(bUseFrameSkip && bUseFrameLimit)\r
- {\r
- fpsskip_tck += _ticks_since_last_update;\r
-\r
- if(++fpsskip_cnt==2)\r
- {\r
- fps_skip = (float)2000/(float)fpsskip_tck;\r
-\r
- fps_skip +=6.0f;\r
-\r
- fpsskip_cnt = 0;\r
- fpsskip_tck = 1;\r
- }\r
- }\r
-\r
- fps_tck += _ticks_since_last_update; \r
- \r
- if(++fps_cnt==10) \r
- { \r
- fps_cur = (float)(TIMEBASE*10)/(float)fps_tck; \r
-\r
- fps_cnt = 0; \r
- fps_tck = 1; \r
- \r
- if(bUseFrameLimit && fps_cur>fFrameRateHz) // optical adjust ;) avoids flickering fps display \r
- fps_cur=fFrameRateHz; \r
- } \r
-} \r
-\r
-void PCFrameCap (void) \r
-{\r
- static unsigned long curticks, lastticks, _ticks_since_last_update;\r
- static unsigned long TicksToWait = 0;\r
- bool Waiting = TRUE; \r
- \r
- while (Waiting) \r
- {\r
- curticks = timeGetTime(); \r
- _ticks_since_last_update = curticks - lastticks; \r
- if ((_ticks_since_last_update > TicksToWait) || \r
- (curticks < lastticks)) \r
- { \r
- Waiting = FALSE; \r
- lastticks = curticks; \r
- TicksToWait = (TIMEBASE / (unsigned long)fFrameRateHz); \r
- } \r
- } \r
-} \r
-\r
-void PCcalcfps(void) \r
-{ \r
- static unsigned long curticks,_ticks_since_last_update,lastticks; \r
- static long fps_cnt = 0; \r
- static float fps_acc = 0;\r
- float CurrentFPS=0; \r
- \r
- curticks = timeGetTime(); \r
- _ticks_since_last_update=curticks-lastticks;\r
- if(_ticks_since_last_update) \r
- CurrentFPS=(float)TIMEBASE/(float)_ticks_since_last_update;\r
- else CurrentFPS = 0;\r
- lastticks = curticks; \r
- \r
- fps_acc += CurrentFPS;\r
-\r
- if(++fps_cnt==10)\r
- {\r
- fps_cur = fps_acc / 10;\r
- fps_acc = 0;\r
- fps_cnt = 0;\r
- }\r
-\r
- fps_skip=CurrentFPS+1.0f;\r
-}\r
-\r
-void SetAutoFrameCap(void)\r
-{\r
- if(iFrameLimit==1)\r
- {\r
- fFrameRateHz = fFrameRate;\r
- dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);\r
- return;\r
- }\r
-\r
- if(dwActFixes&128)\r
- {\r
- if (PSXDisplay.Interlaced)\r
- fFrameRateHz = PSXDisplay.PAL?50.0f:60.0f;\r
- else fFrameRateHz = PSXDisplay.PAL?25.0f:30.0f;\r
- }\r
- else\r
- {\r
- //fFrameRateHz = PSXDisplay.PAL?50.0f:59.94f;\r
-\r
- if(PSXDisplay.PAL)\r
- {\r
- if (STATUSREG&GPUSTATUS_INTERLACED)\r
- fFrameRateHz=33868800.0f/677343.75f; // 50.00238\r
- else fFrameRateHz=33868800.0f/680595.00f; // 49.76351\r
- } \r
- else\r
- {\r
- if (STATUSREG&GPUSTATUS_INTERLACED)\r
- fFrameRateHz=33868800.0f/565031.25f; // 59.94146\r
- else fFrameRateHz=33868800.0f/566107.50f; // 59.82750\r
- }\r
-\r
- dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);\r
- }\r
-}\r
-\r
-void SetFrameRateConfig(void)\r
-{\r
- if(!fFrameRate) fFrameRate=200.0f;\r
-\r
- if(fFrameRateHz==0) \r
- { \r
- if(iFrameLimit==2) fFrameRateHz=59.94f; // auto framerate? set some init val (no pal/ntsc known yet)\r
- else fFrameRateHz=fFrameRate; // else set user framerate\r
- }\r
-\r
- dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);\r
-\r
- if(iFrameLimit==2) SetAutoFrameCap();\r
-}\r
-\r
-void InitFrameCap(void)\r
-{\r
-}\r
-\r
-void ReInitFrameCap(void)\r
-{\r
-}\r
-\r
-void CheckFrameRate(void) // called in updatelace (on every emulated psx vsync)\r
-{\r
- if(bUseFrameSkip) \r
- {\r
- if(!(dwActFixes&0x100))\r
- {\r
- dwLaceCnt++; // -> and store cnt of vsync between frames\r
- if(dwLaceCnt>=MAXLACE && bUseFrameLimit) \r
- {\r
- if(dwLaceCnt==MAXLACE) bInitCap=TRUE;\r
- FrameCap();\r
- }\r
- }\r
- else if(bUseFrameLimit) FrameCap();\r
- calcfps(); // -> calc fps display in skipping mode\r
- } \r
- else // -> non-skipping mode:\r
- {\r
- if(bUseFrameLimit) FrameCap();\r
- if(ulKeybits&KEY_SHOWFPS) calcfps(); \r
- }\r
-}\r
-\r
-void CALLBACK GPUsetframelimit(unsigned long option) // new EPSXE interface func: main emu can enable/disable fps limitation this way\r
-{\r
- bInitCap = TRUE;\r
-\r
- if(option==1) // emu says: limit\r
- {\r
- bUseFrameLimit=TRUE;bUseFrameSkip=FALSE;iFrameLimit=2;\r
- SetAutoFrameCap();\r
- }\r
- else // emu says: no limit\r
- {\r
- bUseFrameLimit=FALSE;\r
- }\r
-}\r
notaz.gp2x.de / pcsx_rearmed.git / blobdiff