| 1 | /***************************************************************************\r |
| 2 | fps.c - description\r |
| 3 | -------------------\r |
| 4 | begin : Sun Mar 08 2009\r |
| 5 | copyright : (C) 1999-2009 by Pete Bernert\r |
| 6 | web : www.pbernert.com \r |
| 7 | ***************************************************************************/\r |
| 8 | \r |
| 9 | /***************************************************************************\r |
| 10 | * *\r |
| 11 | * This program is free software; you can redistribute it and/or modify *\r |
| 12 | * it under the terms of the GNU General Public License as published by *\r |
| 13 | * the Free Software Foundation; either version 2 of the License, or *\r |
| 14 | * (at your option) any later version. See also the license.txt file for *\r |
| 15 | * additional informations. *\r |
| 16 | * *\r |
| 17 | ***************************************************************************/\r |
| 18 | \r |
| 19 | //*************************************************************************// \r |
| 20 | // History of changes:\r |
| 21 | //\r |
| 22 | // 2009/03/08 - Pete \r |
| 23 | // - generic cleanup for the Peops release\r |
| 24 | //\r |
| 25 | //*************************************************************************// \r |
| 26 | \r |
| 27 | #include "stdafx.h"\r |
| 28 | \r |
| 29 | #define _IN_FPS\r |
| 30 | \r |
| 31 | #include "externals.h"\r |
| 32 | \r |
| 33 | ////////////////////////////////////////////////////////////////////////\r |
| 34 | // FPS stuff\r |
| 35 | ////////////////////////////////////////////////////////////////////////\r |
| 36 | \r |
| 37 | BOOL bIsPerformanceCounter=FALSE;\r |
| 38 | float fFrameRateHz=0;\r |
| 39 | DWORD dwFrameRateTicks=16;\r |
| 40 | float fFrameRate;\r |
| 41 | int iFrameLimit;\r |
| 42 | BOOL bUseFrameLimit=FALSE;\r |
| 43 | BOOL bUseFrameSkip=0;\r |
| 44 | DWORD dwLaceCnt=0;\r |
| 45 | \r |
| 46 | ////////////////////////////////////////////////////////////////////////\r |
| 47 | // FPS skipping / limit\r |
| 48 | ////////////////////////////////////////////////////////////////////////\r |
| 49 | \r |
| 50 | BOOL bInitCap = TRUE; \r |
| 51 | float fps_skip = 0;\r |
| 52 | float fps_cur = 0;\r |
| 53 | \r |
| 54 | #define TIMEBASE 100000\r |
| 55 | \r |
| 56 | unsigned long timeGetTime()\r |
| 57 | {\r |
| 58 | struct timeval tv;\r |
| 59 | gettimeofday(&tv, 0); // well, maybe there are better ways\r |
| 60 | return tv.tv_sec * 100000 + tv.tv_usec/10; // to do that in linux, but at least it works\r |
| 61 | }\r |
| 62 | \r |
| 63 | void FrameCap(void)\r |
| 64 | {\r |
| 65 | static unsigned long curticks, lastticks, _ticks_since_last_update;\r |
| 66 | static unsigned long TicksToWait = 0;\r |
| 67 | bool Waiting = TRUE;\r |
| 68 | \r |
| 69 | {\r |
| 70 | curticks = timeGetTime();\r |
| 71 | _ticks_since_last_update = curticks - lastticks;\r |
| 72 | \r |
| 73 | if((_ticks_since_last_update > TicksToWait) ||\r |
| 74 | (curticks <lastticks))\r |
| 75 | {\r |
| 76 | lastticks = curticks;\r |
| 77 | \r |
| 78 | if((_ticks_since_last_update-TicksToWait) > dwFrameRateTicks)\r |
| 79 | TicksToWait=0;\r |
| 80 | else TicksToWait=dwFrameRateTicks-(_ticks_since_last_update-TicksToWait);\r |
| 81 | }\r |
| 82 | else\r |
| 83 | {\r |
| 84 | while (Waiting) \r |
| 85 | {\r |
| 86 | curticks = timeGetTime(); \r |
| 87 | _ticks_since_last_update = curticks - lastticks; \r |
| 88 | if ((_ticks_since_last_update > TicksToWait) ||\r |
| 89 | (curticks < lastticks)) \r |
| 90 | { \r |
| 91 | Waiting = FALSE;\r |
| 92 | lastticks = curticks;\r |
| 93 | TicksToWait = dwFrameRateTicks; \r |
| 94 | } \r |
| 95 | } \r |
| 96 | } \r |
| 97 | } \r |
| 98 | } \r |
| 99 | \r |
| 100 | #define MAXSKIP 120\r |
| 101 | #define MAXLACE 16\r |
| 102 | \r |
| 103 | void FrameSkip(void)\r |
| 104 | {\r |
| 105 | static int iNumSkips=0,iAdditionalSkip=0; // number of additional frames to skip\r |
| 106 | static DWORD dwLastLace=0; // helper var for frame limitation\r |
| 107 | static DWORD curticks, lastticks, _ticks_since_last_update;\r |
| 108 | \r |
| 109 | if(!dwLaceCnt) return; // important: if no updatelace happened, we ignore it completely\r |
| 110 | \r |
| 111 | if(iNumSkips) // we are in skipping mode?\r |
| 112 | {\r |
| 113 | dwLastLace+=dwLaceCnt; // -> calc frame limit helper (number of laces)\r |
| 114 | bSkipNextFrame = TRUE; // -> we skip next frame\r |
| 115 | iNumSkips--; // -> ok, one done\r |
| 116 | }\r |
| 117 | else // ok, no additional skipping has to be done... \r |
| 118 | { // we check now, if some limitation is needed, or a new skipping has to get started\r |
| 119 | DWORD dwWaitTime;\r |
| 120 | \r |
| 121 | if(bInitCap || bSkipNextFrame) // first time or we skipped before?\r |
| 122 | {\r |
| 123 | if(bUseFrameLimit && !bInitCap) // frame limit wanted and not first time called?\r |
| 124 | {\r |
| 125 | DWORD dwT=_ticks_since_last_update; // -> that's the time of the last drawn frame\r |
| 126 | dwLastLace+=dwLaceCnt; // -> and that's the number of updatelace since the start of the last drawn frame\r |
| 127 | \r |
| 128 | curticks = timeGetTime();\r |
| 129 | _ticks_since_last_update= dwT+curticks - lastticks;\r |
| 130 | \r |
| 131 | dwWaitTime=dwLastLace*dwFrameRateTicks; // -> and now we calc the time the real psx would have needed\r |
| 132 | \r |
| 133 | if(_ticks_since_last_update<dwWaitTime) // -> we were too fast?\r |
| 134 | { \r |
| 135 | if((dwWaitTime-_ticks_since_last_update)> // -> some more security, to prevent\r |
| 136 | (60*dwFrameRateTicks)) // wrong waiting times\r |
| 137 | _ticks_since_last_update=dwWaitTime;\r |
| 138 | \r |
| 139 | while(_ticks_since_last_update<dwWaitTime) // -> loop until we have reached the real psx time\r |
| 140 | { // (that's the additional limitation, yup)\r |
| 141 | curticks = timeGetTime();\r |
| 142 | _ticks_since_last_update = dwT+curticks - lastticks;\r |
| 143 | }\r |
| 144 | }\r |
| 145 | else // we were still too slow ?!!?\r |
| 146 | {\r |
| 147 | if(iAdditionalSkip<MAXSKIP) // -> well, somewhen we really have to stop skipping on very slow systems\r |
| 148 | {\r |
| 149 | iAdditionalSkip++; // -> inc our watchdog var\r |
| 150 | dwLaceCnt=0; // -> reset lace count\r |
| 151 | lastticks = timeGetTime();\r |
| 152 | return; // -> done, we will skip next frame to get more speed\r |
| 153 | }\r |
| 154 | }\r |
| 155 | }\r |
| 156 | \r |
| 157 | bInitCap=FALSE; // -> ok, we have inited the frameskip func\r |
| 158 | iAdditionalSkip=0; // -> init additional skip\r |
| 159 | bSkipNextFrame=FALSE; // -> we don't skip the next frame\r |
| 160 | lastticks = timeGetTime();\r |
| 161 | dwLaceCnt=0; // -> and we start to count the laces \r |
| 162 | dwLastLace=0; \r |
| 163 | _ticks_since_last_update=0;\r |
| 164 | return; // -> done, the next frame will get drawn\r |
| 165 | }\r |
| 166 | \r |
| 167 | bSkipNextFrame=FALSE; // init the frame skip signal to 'no skipping' first\r |
| 168 | \r |
| 169 | curticks = timeGetTime();\r |
| 170 | _ticks_since_last_update = curticks - lastticks;\r |
| 171 | \r |
| 172 | dwLastLace=dwLaceCnt; // store curr count (frame limitation helper)\r |
| 173 | dwWaitTime=dwLaceCnt*dwFrameRateTicks; // calc the 'real psx lace time'\r |
| 174 | \r |
| 175 | if(_ticks_since_last_update>dwWaitTime) // hey, we needed way too long for that frame...\r |
| 176 | {\r |
| 177 | if(bUseFrameLimit) // if limitation, we skip just next frame,\r |
| 178 | { // and decide after, if we need to do more\r |
| 179 | iNumSkips=0;\r |
| 180 | }\r |
| 181 | else\r |
| 182 | {\r |
| 183 | iNumSkips=_ticks_since_last_update/dwWaitTime; // -> calc number of frames to skip to catch up\r |
| 184 | iNumSkips--; // -> since we already skip next frame, one down\r |
| 185 | if(iNumSkips>MAXSKIP) iNumSkips=MAXSKIP; // -> well, somewhere we have to draw a line\r |
| 186 | }\r |
| 187 | bSkipNextFrame = TRUE; // -> signal for skipping the next frame\r |
| 188 | }\r |
| 189 | else // we were faster than real psx? fine :)\r |
| 190 | if(bUseFrameLimit) // frame limit used? so we wait til the 'real psx time' has been reached\r |
| 191 | {\r |
| 192 | if(dwLaceCnt>MAXLACE) // -> security check\r |
| 193 | _ticks_since_last_update=dwWaitTime;\r |
| 194 | \r |
| 195 | while(_ticks_since_last_update<dwWaitTime) // just do a waiting loop...\r |
| 196 | {\r |
| 197 | curticks = timeGetTime();\r |
| 198 | _ticks_since_last_update = curticks - lastticks;\r |
| 199 | }\r |
| 200 | }\r |
| 201 | \r |
| 202 | lastticks = timeGetTime();\r |
| 203 | }\r |
| 204 | \r |
| 205 | dwLaceCnt=0; // init lace counter\r |
| 206 | }\r |
| 207 | \r |
| 208 | void calcfps(void) \r |
| 209 | { \r |
| 210 | static unsigned long curticks,_ticks_since_last_update,lastticks; \r |
| 211 | static long fps_cnt = 0;\r |
| 212 | static unsigned long fps_tck = 1; \r |
| 213 | static long fpsskip_cnt = 0;\r |
| 214 | static unsigned long fpsskip_tck = 1;\r |
| 215 | \r |
| 216 | { \r |
| 217 | curticks = timeGetTime(); \r |
| 218 | _ticks_since_last_update=curticks-lastticks; \r |
| 219 | \r |
| 220 | if(bUseFrameSkip && !bUseFrameLimit && _ticks_since_last_update) \r |
| 221 | fps_skip=min(fps_skip,((float)TIMEBASE/(float)_ticks_since_last_update+1.0f));\r |
| 222 | \r |
| 223 | lastticks = curticks; \r |
| 224 | } \r |
| 225 | \r |
| 226 | if(bUseFrameSkip && bUseFrameLimit)\r |
| 227 | {\r |
| 228 | fpsskip_tck += _ticks_since_last_update;\r |
| 229 | \r |
| 230 | if(++fpsskip_cnt==2)\r |
| 231 | {\r |
| 232 | fps_skip = (float)2000/(float)fpsskip_tck;\r |
| 233 | \r |
| 234 | fps_skip +=6.0f;\r |
| 235 | \r |
| 236 | fpsskip_cnt = 0;\r |
| 237 | fpsskip_tck = 1;\r |
| 238 | }\r |
| 239 | }\r |
| 240 | \r |
| 241 | fps_tck += _ticks_since_last_update; \r |
| 242 | \r |
| 243 | if(++fps_cnt==10) \r |
| 244 | { \r |
| 245 | fps_cur = (float)(TIMEBASE*10)/(float)fps_tck; \r |
| 246 | \r |
| 247 | fps_cnt = 0; \r |
| 248 | fps_tck = 1; \r |
| 249 | \r |
| 250 | if(bUseFrameLimit && fps_cur>fFrameRateHz) // optical adjust ;) avoids flickering fps display \r |
| 251 | fps_cur=fFrameRateHz; \r |
| 252 | } \r |
| 253 | } \r |
| 254 | \r |
| 255 | void PCFrameCap (void) \r |
| 256 | {\r |
| 257 | static unsigned long curticks, lastticks, _ticks_since_last_update;\r |
| 258 | static unsigned long TicksToWait = 0;\r |
| 259 | bool Waiting = TRUE; \r |
| 260 | \r |
| 261 | while (Waiting) \r |
| 262 | {\r |
| 263 | curticks = timeGetTime(); \r |
| 264 | _ticks_since_last_update = curticks - lastticks; \r |
| 265 | if ((_ticks_since_last_update > TicksToWait) || \r |
| 266 | (curticks < lastticks)) \r |
| 267 | { \r |
| 268 | Waiting = FALSE; \r |
| 269 | lastticks = curticks; \r |
| 270 | TicksToWait = (TIMEBASE / (unsigned long)fFrameRateHz); \r |
| 271 | } \r |
| 272 | } \r |
| 273 | } \r |
| 274 | \r |
| 275 | void PCcalcfps(void) \r |
| 276 | { \r |
| 277 | static unsigned long curticks,_ticks_since_last_update,lastticks; \r |
| 278 | static long fps_cnt = 0; \r |
| 279 | static float fps_acc = 0;\r |
| 280 | float CurrentFPS=0; \r |
| 281 | \r |
| 282 | curticks = timeGetTime(); \r |
| 283 | _ticks_since_last_update=curticks-lastticks;\r |
| 284 | if(_ticks_since_last_update) \r |
| 285 | CurrentFPS=(float)TIMEBASE/(float)_ticks_since_last_update;\r |
| 286 | else CurrentFPS = 0;\r |
| 287 | lastticks = curticks; \r |
| 288 | \r |
| 289 | fps_acc += CurrentFPS;\r |
| 290 | \r |
| 291 | if(++fps_cnt==10)\r |
| 292 | {\r |
| 293 | fps_cur = fps_acc / 10;\r |
| 294 | fps_acc = 0;\r |
| 295 | fps_cnt = 0;\r |
| 296 | }\r |
| 297 | \r |
| 298 | fps_skip=CurrentFPS+1.0f;\r |
| 299 | }\r |
| 300 | \r |
| 301 | void SetAutoFrameCap(void)\r |
| 302 | {\r |
| 303 | if(iFrameLimit==1)\r |
| 304 | {\r |
| 305 | fFrameRateHz = fFrameRate;\r |
| 306 | dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);\r |
| 307 | return;\r |
| 308 | }\r |
| 309 | \r |
| 310 | if(dwActFixes&128)\r |
| 311 | {\r |
| 312 | if (PSXDisplay.Interlaced)\r |
| 313 | fFrameRateHz = PSXDisplay.PAL?50.0f:60.0f;\r |
| 314 | else fFrameRateHz = PSXDisplay.PAL?25.0f:30.0f;\r |
| 315 | }\r |
| 316 | else\r |
| 317 | {\r |
| 318 | //fFrameRateHz = PSXDisplay.PAL?50.0f:59.94f;\r |
| 319 | \r |
| 320 | if(PSXDisplay.PAL)\r |
| 321 | {\r |
| 322 | if (STATUSREG&GPUSTATUS_INTERLACED)\r |
| 323 | fFrameRateHz=33868800.0f/677343.75f; // 50.00238\r |
| 324 | else fFrameRateHz=33868800.0f/680595.00f; // 49.76351\r |
| 325 | } \r |
| 326 | else\r |
| 327 | {\r |
| 328 | if (STATUSREG&GPUSTATUS_INTERLACED)\r |
| 329 | fFrameRateHz=33868800.0f/565031.25f; // 59.94146\r |
| 330 | else fFrameRateHz=33868800.0f/566107.50f; // 59.82750\r |
| 331 | }\r |
| 332 | \r |
| 333 | dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);\r |
| 334 | }\r |
| 335 | }\r |
| 336 | \r |
| 337 | void SetFrameRateConfig(void)\r |
| 338 | {\r |
| 339 | if(!fFrameRate) fFrameRate=200.0f;\r |
| 340 | \r |
| 341 | if(fFrameRateHz==0) \r |
| 342 | { \r |
| 343 | if(iFrameLimit==2) fFrameRateHz=59.94f; // auto framerate? set some init val (no pal/ntsc known yet)\r |
| 344 | else fFrameRateHz=fFrameRate; // else set user framerate\r |
| 345 | }\r |
| 346 | \r |
| 347 | dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);\r |
| 348 | \r |
| 349 | if(iFrameLimit==2) SetAutoFrameCap();\r |
| 350 | }\r |
| 351 | \r |
| 352 | void InitFrameCap(void)\r |
| 353 | {\r |
| 354 | }\r |
| 355 | \r |
| 356 | void ReInitFrameCap(void)\r |
| 357 | {\r |
| 358 | }\r |
| 359 | \r |
| 360 | void CheckFrameRate(void) // called in updatelace (on every emulated psx vsync)\r |
| 361 | {\r |
| 362 | if(bUseFrameSkip) \r |
| 363 | {\r |
| 364 | if(!(dwActFixes&0x100))\r |
| 365 | {\r |
| 366 | dwLaceCnt++; // -> and store cnt of vsync between frames\r |
| 367 | if(dwLaceCnt>=MAXLACE && bUseFrameLimit) \r |
| 368 | {\r |
| 369 | if(dwLaceCnt==MAXLACE) bInitCap=TRUE;\r |
| 370 | FrameCap();\r |
| 371 | }\r |
| 372 | }\r |
| 373 | else if(bUseFrameLimit) FrameCap();\r |
| 374 | calcfps(); // -> calc fps display in skipping mode\r |
| 375 | } \r |
| 376 | else // -> non-skipping mode:\r |
| 377 | {\r |
| 378 | if(bUseFrameLimit) FrameCap();\r |
| 379 | if(ulKeybits&KEY_SHOWFPS) calcfps(); \r |
| 380 | }\r |
| 381 | }\r |
| 382 | \r |
| 383 | void CALLBACK GPUsetframelimit(unsigned long option) // new EPSXE interface func: main emu can enable/disable fps limitation this way\r |
| 384 | {\r |
| 385 | bInitCap = TRUE;\r |
| 386 | \r |
| 387 | if(option==1) // emu says: limit\r |
| 388 | {\r |
| 389 | bUseFrameLimit=TRUE;bUseFrameSkip=FALSE;iFrameLimit=2;\r |
| 390 | SetAutoFrameCap();\r |
| 391 | }\r |
| 392 | else // emu says: no limit\r |
| 393 | {\r |
| 394 | bUseFrameLimit=FALSE;\r |
| 395 | }\r |
| 396 | }\r |