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pcsxr-1.9.92
[pcsx_rearmed.git] / plugins / peopsxgl / fps.c
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ef79bbde
P		 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
37BOOL bIsPerformanceCounter=FALSE;\r
38float fFrameRateHz=0;\r
39DWORD dwFrameRateTicks=16;\r
40float fFrameRate;\r
41int iFrameLimit;\r
42BOOL bUseFrameLimit=FALSE;\r
43BOOL bUseFrameSkip=0;\r
44DWORD dwLaceCnt=0;\r
45\r
46////////////////////////////////////////////////////////////////////////\r
47// FPS skipping / limit\r
48////////////////////////////////////////////////////////////////////////\r
49\r
50BOOL bInitCap = TRUE; \r
51float fps_skip = 0;\r
52float fps_cur = 0;\r
53\r
54#define TIMEBASE 100000\r
55\r
56unsigned 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
63void 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
103void 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
208void 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
255void 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
275void 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
301void 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
337void 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
352void InitFrameCap(void)\r
353{\r
354}\r
355\r
356void ReInitFrameCap(void)\r
357{\r
358}\r
359\r
360void 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
383void 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
ARM optimized PCSX fork