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[libpicofe.git] / gp2x / emu.c
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720ee7f6 1// (c) Copyright 2006 notaz, All rights reserved.\r
2// Free for non-commercial use.\r
3\r
4// For commercial use, separate licencing terms must be obtained.\r
5\r
6#include <stdio.h>\r
7#include <stdlib.h>\r
8#include <sys/time.h>\r
9#include <linux/limits.h>\r
10#include <ctype.h>\r
11#include <unistd.h>\r
12\r
13#include <stdarg.h>\r
14\r
15#include "emu.h"\r
16#include "gp2x.h"\r
17#include "usbjoy.h"\r
18#include "menu.h"\r
19#include "asmutils.h"\r
20#include "cpuctrl.h"\r
21\r
22#include "Pico/PicoInt.h"\r
23#include "zlib/zlib.h"\r
24\r
25\r
26#ifdef BENCHMARK\r
27#define OSD_FPS_X 220\r
28#else\r
29#define OSD_FPS_X 260\r
30#endif\r
31\r
32// PicoPad[] format: SACB RLDU\r
33char *actionNames[] = {\r
34 "UP", "DOWN", "LEFT", "RIGHT", "B", "C", "A", "START",\r
35 0, 0, 0, 0, 0, 0, 0, 0, // Z, Y, X, MODE (enabled only when needed), ?, ?, ?, ?\r
36 0, 0, 0, 0, 0, 0, 0, "ENTER MENU", // player2_flag, ?, ?, ?, ?, ?, ?, menu\r
37 "NEXT SAVE SLOT", "PREV SAVE SLOT", "SWITCH RENDERER", "SAVE STATE",\r
38 "LOAD STATE", "VOLUME UP", "VOLUME DOWN", "DONE"\r
39};\r
40\r
41int engineState;\r
42int select_exits = 0;\r
43char *PicoConfigFile = "picoconfig.bin";\r
44currentConfig_t currentConfig;\r
45\r
46char romFileName[PATH_MAX];\r
47unsigned char *rom_data = NULL;\r
48\r
49extern int crashed_940;\r
50\r
51static char noticeMsg[64]; // notice msg to draw\r
52static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
53static int reset_timing, osd_fps_x;\r
54static int combo_keys = 0, combo_acts = 0; // keys and actions which need button combos\r
55static int gp2x_old_gamma = 100;\r
56static unsigned char *movie_data = NULL;\r
57static int movie_size = 0;\r
58static int frame_count = 0;\r
59unsigned char *framebuff = 0; // temporary buffer for alt renderer\r
60int state_slot = 0;\r
61\r
62/*\r
63// tmp\r
64static FILE *logf = NULL;\r
65\r
66void pprintf(char *texto, ...)\r
67{\r
68 va_list args;\r
69\r
70 va_start(args,texto);\r
71 vfprintf(logf,texto,args);\r
72 va_end(args);\r
73 fflush(logf);\r
74 sync();\r
75}\r
76*/\r
77// utilities\r
78static void strlwr(char* string)\r
79{\r
80 while ( (*string++ = (char)tolower(*string)) );\r
81}\r
82\r
83static int try_rfn_ext(char *ext)\r
84{\r
85 FILE *tmp;\r
86 char *p;\r
87\r
88 p = romFileName + strlen(romFileName) - 4;\r
89 if (p < romFileName) p = romFileName;\r
90 strcpy(p, ext);\r
91\r
92 if((tmp = fopen(romFileName, "rb"))) {\r
93 fclose(tmp);\r
94 return 1;\r
95 }\r
96 return 0;\r
97}\r
98\r
99int emu_ReloadRom(void)\r
100{\r
101 unsigned int rom_size = 0;\r
102 char ext[5], *p;\r
103 FILE *rom;\r
104 int ret;\r
105\r
106 printf("emu_ReloadRom(%s)\n", romFileName);\r
107\r
108 // detect wrong extensions (.srm and .mds)\r
109 p = romFileName + strlen(romFileName) - 4;\r
110 if (p < romFileName) p = romFileName;\r
111 strncpy(ext, p, 4);\r
112 ext[4] = 0;\r
113 strlwr(ext);\r
114\r
115 if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
116 sprintf(menuErrorMsg, "Not a ROM selected.");\r
117 return 0;\r
118 }\r
119\r
120 // check for movie file\r
121 if(movie_data) {\r
122 free(movie_data);\r
123 movie_data = 0;\r
124 }\r
125 if(!strcmp(ext, ".gmv")) {\r
126 // check for both gmv and rom\r
127 int dummy;\r
128 FILE *movie_file = fopen(romFileName, "rb");\r
129 if(!movie_file) {\r
130 sprintf(menuErrorMsg, "Failed to open movie.");\r
131 return 0;\r
132 }\r
133 fseek(movie_file, 0, SEEK_END);\r
134 movie_size = ftell(movie_file);\r
135 fseek(movie_file, 0, SEEK_SET);\r
136 if(movie_size < 64+3) {\r
137 sprintf(menuErrorMsg, "Invalid GMV file.");\r
138 fclose(movie_file);\r
139 return 0;\r
140 }\r
141 movie_data = malloc(movie_size);\r
142 if(movie_data == NULL) {\r
143 sprintf(menuErrorMsg, "low memory.");\r
144 fclose(movie_file);\r
145 return 0;\r
146 }\r
147 fread(movie_data, 1, movie_size, movie_file);\r
148 fclose(movie_file);\r
149 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
150 sprintf(menuErrorMsg, "Invalid GMV file.");\r
151 return 0;\r
152 }\r
153 dummy = try_rfn_ext(".zip") || try_rfn_ext(".bin") ||\r
154 try_rfn_ext(".smd") || try_rfn_ext(".gen");\r
155 if (!dummy) {\r
156 sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
157 return 0;\r
158 }\r
159 }\r
160\r
161 rom = fopen(romFileName, "rb");\r
162 if(!rom) {\r
163 sprintf(menuErrorMsg, "Failed to open rom.");\r
164 return 0;\r
165 }\r
166\r
167 if(rom_data) {\r
168 free(rom_data);\r
169 rom_data = 0;\r
170 rom_size = 0;\r
171 }\r
172\r
173 // zipfile support\r
174 if(!strcasecmp(ext, ".zip")) {\r
175 fclose(rom);\r
176 ret = CartLoadZip(romFileName, &rom_data, &rom_size);\r
177 if(ret) {\r
178 if (ret == 4) strcpy(menuErrorMsg, "No ROMs in zip found.");\r
179 else sprintf(menuErrorMsg, "Unzip failed with code %i", ret);\r
180 printf("%s\n", menuErrorMsg);\r
181 return 0;\r
182 }\r
183 } else {\r
184 if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
185 sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
186 printf("%s\n", menuErrorMsg);\r
187 fclose(rom);\r
188 return 0;\r
189 }\r
190 fclose(rom);\r
191 }\r
192\r
193 // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
194 if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
195 ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
196 if (rom_data) free(rom_data);\r
197 rom_data = 0;\r
198 sprintf(menuErrorMsg, "Not a ROM selected.");\r
199 return 0;\r
200 }\r
201\r
202 printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
203 if(PicoCartInsert(rom_data, rom_size)) {\r
204 sprintf(menuErrorMsg, "Failed to load ROM.");\r
205 return 0;\r
206 }\r
207\r
208 // load config for this ROM\r
209 ret = emu_ReadConfig(1);\r
210 if (!ret)\r
211 emu_ReadConfig(0);\r
212\r
213 // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
214 strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
215 currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
216\r
217 // additional movie stuff\r
218 if(movie_data) {\r
219 if(movie_data[0x14] == '6')\r
220 PicoOpt |= 0x20; // 6 button pad\r
221 else PicoOpt &= ~0x20;\r
222 if(movie_data[0xF] >= 'A') {\r
223 //Pico.m.pal = movie_data[0x16] >> 7;\r
224 // TODO: bits 6 & 5\r
225 }\r
226 strcpy(noticeMsg, "MOVIE LOADED");\r
227 }\r
228 else\r
229 {\r
230 if(Pico.m.pal) {\r
231 strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
232 } else {\r
233 strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
234 }\r
235 }\r
236 gettimeofday(&noticeMsgTime, 0);\r
237\r
238 // load SRAM for this ROM\r
239 if(currentConfig.EmuOpt & 1)\r
240 emu_SaveLoadGame(1, 1);\r
241\r
242 frame_count = 0;\r
243\r
244 return 1;\r
245}\r
246\r
247\r
248void emu_Init(void)\r
249{\r
250 // make temp buffer for alt renderer\r
251 framebuff = malloc((8+320)*(8+240+8));\r
252 if (!framebuff)\r
253 {\r
254 printf("framebuff == 0\n");\r
255 }\r
256\r
257 PicoInit();\r
258\r
259// logf = fopen("log.txt", "w");\r
260}\r
261\r
262\r
263static void romfname_ext(char *dst, char *ext)\r
264{\r
265 char *p;\r
266\r
267 // make save filename\r
268 for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
269 strncpy(dst, p, 511);\r
270 dst[511-8] = 0;\r
271 if(dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
272 strcat(dst, ext);\r
273}\r
274\r
275\r
276static void find_combos(void)\r
277{\r
278 int act, u;\r
279\r
280 // find out which keys and actions are combos\r
281 combo_keys = combo_acts = 0;\r
282 for (act = 0; act < 32; act++)\r
283 {\r
284 int keyc = 0;\r
285 if (act == 16) continue; // player2 flag\r
286 for (u = 0; u < 32; u++)\r
287 {\r
288 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
289 }\r
290 if (keyc > 1)\r
291 {\r
292 // loop again and mark those keys and actions as combo\r
293 for (u = 0; u < 32; u++)\r
294 {\r
295 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
296 combo_keys |= 1 << u;\r
297 combo_acts |= 1 << act;\r
298 }\r
299 }\r
300 }\r
301 }\r
302 // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
303}\r
304\r
305\r
306int emu_ReadConfig(int game)\r
307{\r
308 FILE *f;\r
309 char cfg[512];\r
310 int bread = 0;\r
311\r
312 if (!game)\r
313 {\r
314 // set default config\r
315 memset(&currentConfig, 0, sizeof(currentConfig));\r
316 currentConfig.lastRomFile[0] = 0;\r
317 currentConfig.EmuOpt = 0x1f;\r
318 currentConfig.PicoOpt = 0x0f;\r
319 currentConfig.PsndRate = 22050;\r
320 currentConfig.PicoRegion = 0; // auto\r
321 currentConfig.Frameskip = -1; // auto\r
322 currentConfig.CPUclock = 200;\r
323 currentConfig.volume = 50;\r
324 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
325 currentConfig.KeyBinds[ 4] = 1<<1;\r
326 currentConfig.KeyBinds[ 2] = 1<<2;\r
327 currentConfig.KeyBinds[ 6] = 1<<3;\r
328 currentConfig.KeyBinds[14] = 1<<4;\r
329 currentConfig.KeyBinds[13] = 1<<5;\r
330 currentConfig.KeyBinds[12] = 1<<6;\r
331 currentConfig.KeyBinds[ 8] = 1<<7;\r
332 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
333 currentConfig.KeyBinds[10] = 1<<27; // save state\r
334 currentConfig.KeyBinds[11] = 1<<28; // load state\r
335 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
336 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
337 currentConfig.gamma = 100;\r
338 strncpy(cfg, PicoConfigFile, 511);\r
339 cfg[511] = 0;\r
340 } else {\r
341 romfname_ext(cfg, ".pbcfg");\r
342 }\r
343\r
344 printf("emu_ReadConfig: %s ", cfg);\r
345 f = fopen(cfg, "rb");\r
346 if (f) {\r
347 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
348 fclose(f);\r
349 }\r
350 printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
351\r
352 PicoOpt = currentConfig.PicoOpt;\r
353 PsndRate = currentConfig.PsndRate;\r
354 PicoRegionOverride = currentConfig.PicoRegion;\r
355 if (PicoOpt & 0x20) {\r
356 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
357 actionNames[10] = "X"; actionNames[11] = "MODE";\r
358 }\r
359 // some sanity checks\r
360 if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
361 if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
362 // if volume keys are unbound, bind them to volume control\r
363 if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
364 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
365 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
366 }\r
367\r
368 return (bread == sizeof(currentConfig));\r
369}\r
370\r
371\r
372int emu_WriteConfig(int game)\r
373{\r
374 FILE *f;\r
375 char cfg[512];\r
376 int bwrite = 0;\r
377\r
378 if (!game)\r
379 {\r
380 strncpy(cfg, PicoConfigFile, 511);\r
381 cfg[511] = 0;\r
382 } else {\r
383 romfname_ext(cfg, ".pbcfg");\r
384 }\r
385\r
386 printf("emu_WriteConfig: %s ", cfg);\r
387 f = fopen(cfg, "wb");\r
388 if (f) {\r
389 currentConfig.PicoOpt = PicoOpt;\r
390 currentConfig.PsndRate = PsndRate;\r
391 currentConfig.PicoRegion = PicoRegionOverride;\r
392 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
393 fflush(f);\r
394 fclose(f);\r
395 sync();\r
396 }\r
397 printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
398\r
399 return (bwrite == sizeof(currentConfig));\r
400}\r
401\r
402\r
403void emu_Deinit(void)\r
404{\r
405 // save SRAM\r
406 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
407 emu_SaveLoadGame(0, 1);\r
408 SRam.changed = 0;\r
409 }\r
410\r
411 if (!(currentConfig.EmuOpt & 0x20))\r
412 emu_WriteConfig(0);\r
413 free(framebuff);\r
414\r
415 PicoExit();\r
416// fclose(logf);\r
417\r
418 // restore gamma\r
419 if (gp2x_old_gamma != 100)\r
420 set_gamma(100);\r
421}\r
422\r
423\r
424void osd_text(int x, int y, char *text)\r
425{\r
426 int len = strlen(text)*8;\r
427\r
428 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
429 int *p, i, h, black, white;\r
430 if (PicoOpt&0x10) {\r
431 black = 0x40404040; white = 0x41;\r
432 } else {\r
433 black = 0xe0e0e0e0; white = 0xf0;\r
434 }\r
435 x &= ~3; // align x\r
436 len = (len+3) >> 2;\r
437 for (h = 0; h < 8; h++) {\r
438 p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
439 for (i = len; i; i--, p++) *p = black;\r
440 }\r
441 gp2x_text_out8_2(x, y, text, white);\r
442 } else {\r
443 int *p, i, h;\r
444 x &= ~1; // align x\r
445 len = (len+1) >> 1;\r
446 for (h = 0; h < 8; h++) {\r
447 p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
448 for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
449 }\r
450 gp2x_text_out15(x, y, text);\r
451 }\r
452}\r
453\r
454static int EmuScan16(unsigned int num, void *sdata)\r
455{\r
456 if (!(Pico.video.reg[1]&8)) num += 8;\r
457 DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
458\r
459 return 0;\r
460}\r
461\r
462static int EmuScan8(unsigned int num, void *sdata)\r
463{\r
464 if (!(Pico.video.reg[1]&8)) num += 8;\r
465 DrawLineDest = (unsigned char *) gp2x_screen + 320*(num+1);\r
466\r
467 return 0;\r
468}\r
469\r
470static int localPal[0x100];\r
471static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
472\r
473static void blit(char *fps, char *notice)\r
474{\r
475 if (PicoOpt&0x10) {\r
476 // 8bit fast renderer\r
477 if (Pico.m.dirtyPal) {\r
478 Pico.m.dirtyPal = 0;\r
479 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
480 // feed new palette to our device\r
481 gp2x_video_setpalette(localPal, 0x40);\r
482 }\r
483 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
484 } else if (!(currentConfig.EmuOpt&0x80)) {\r
485 // 8bit accurate renderer\r
486 if (Pico.m.dirtyPal) {\r
487 Pico.m.dirtyPal = 0;\r
488 if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
489 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
490 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
491 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
492 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
493 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
494 localPal[0xf0] = 0x00ffffff;\r
495 gp2x_video_setpalette(localPal, 0x100);\r
496 } else if (rendstatus & 0x20) { // mid-frame palette changes\r
497 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
498 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
499 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
500 gp2x_video_setpalette(localPal, 0xc0);\r
501 } else {\r
502 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
503 gp2x_video_setpalette(localPal, 0x40);\r
504 }\r
505 }\r
506 }\r
507\r
508 if (notice) osd_text(4, 232, notice);\r
509 if (currentConfig.EmuOpt & 2)\r
510 osd_text(osd_fps_x, 232, fps);\r
511\r
512 //gp2x_video_wait_vsync();\r
513 gp2x_video_flip();\r
514\r
515 if (!(PicoOpt&0x10)) {\r
516 if (!(Pico.video.reg[1]&8)) {\r
517 if (currentConfig.EmuOpt&0x80) {\r
518 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
519 } else {\r
520 DrawLineDest = (unsigned char *) gp2x_screen + 320*8;\r
521 }\r
522 } else {\r
523 DrawLineDest = gp2x_screen;\r
524 }\r
525 }\r
526}\r
527\r
528\r
529// clears whole screen or just the notice area (in all buffers)\r
530static void clearArea(int full)\r
531{\r
532 if (PicoOpt&0x10) {\r
533 // 8bit fast renderer\r
534 if (full) gp2x_memset_all_buffers(0, 0x40, 320*240);\r
535 else gp2x_memset_all_buffers(320*232, 0x40, 320*8);\r
536 } else if (currentConfig.EmuOpt&0x80) {\r
537 // 16bit accurate renderer\r
538 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
539 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
540 } else {\r
541 // 8bit accurate renderer\r
542 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
543 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
544 }\r
545}\r
546\r
547\r
548static void vidResetMode(void)\r
549{\r
550 if (PicoOpt&0x10) {\r
551 localPal[0x40] = 0;\r
552 localPal[0x41] = 0x00ffffff;\r
553 gp2x_video_changemode(8);\r
554 gp2x_video_setpalette(localPal, 0x42);\r
555 gp2x_memset_all_buffers(0, 0x40, 320*240);\r
556 gp2x_video_flip();\r
557 } else if (currentConfig.EmuOpt&0x80) {\r
558 gp2x_video_changemode(15);\r
559 PicoDrawSetColorFormat(1);\r
560 PicoScan = EmuScan16;\r
561 PicoScan(0, 0);\r
562 } else {\r
563 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
564 localPal[0xf0] = 0x00ffffff;\r
565 gp2x_video_changemode(8);\r
566 gp2x_video_setpalette(localPal, 0x100);\r
567 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
568 gp2x_video_flip();\r
569 PicoDrawSetColorFormat(2);\r
570 PicoScan = EmuScan8;\r
571 PicoScan(0, 0);\r
572 }\r
573 Pico.m.dirtyPal = 1;\r
574 // reset scaling\r
575 gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
576}\r
577\r
578\r
579static int check_save_file(void)\r
580{\r
581 char saveFname[512];\r
582 char ext[16];\r
583 FILE *f;\r
584\r
585 ext[0] = 0;\r
586 if(state_slot > 0 && state_slot < 10) sprintf(ext, ".%i", state_slot);\r
587 strcat(ext, ".mds");\r
588 if(currentConfig.EmuOpt & 8) strcat(ext, ".gz");\r
589\r
590 romfname_ext(saveFname, ext);\r
591 if ((f = fopen(saveFname, "rb"))) {\r
592 fclose(f);\r
593 return 1;\r
594 }\r
595 return 0;\r
596}\r
597\r
598static void RunEvents(unsigned int which)\r
599{\r
600 if(which & 0x1800) { // save or load (but not both)\r
601 int do_it = 1;\r
602 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && check_save_file()) {\r
603 unsigned long keys;\r
604 blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
605 while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
606 usleep(50*1024);\r
607 if (keys & GP2X_X) do_it = 0;\r
608 clearArea(0);\r
609 }\r
610 if (do_it) {\r
611 blit("", (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
612 emu_SaveLoadGame(which & 0x1000, 0);\r
613 }\r
614\r
615 reset_timing = 1;\r
616 }\r
617 if(which & 0x0400) { // switch renderer\r
618 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
619 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
620 else currentConfig.EmuOpt &= ~0x80;\r
621\r
622 vidResetMode();\r
623\r
624 if (PicoOpt&0x10) {\r
625 strcpy(noticeMsg, " 8bit fast renderer");\r
626 } else if (currentConfig.EmuOpt&0x80) {\r
627 strcpy(noticeMsg, "16bit accurate renderer");\r
628 } else {\r
629 strcpy(noticeMsg, " 8bit accurate renderer");\r
630 }\r
631\r
632 gettimeofday(&noticeMsgTime, 0);\r
633 }\r
634 if(which & 0x0300) {\r
635 if(which&0x0200) {\r
636 state_slot -= 1;\r
637 if(state_slot < 0) state_slot = 9;\r
638 } else {\r
639 state_slot += 1;\r
640 if(state_slot > 9) state_slot = 0;\r
641 }\r
642 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, check_save_file() ? "USED" : "FREE");\r
643 gettimeofday(&noticeMsgTime, 0);\r
644 }\r
645 if(which & 0x0080) {\r
646 engineState = PGS_Menu;\r
647 }\r
648}\r
649\r
650\r
651static void updateKeys(void)\r
652{\r
653 unsigned long keys, allActions[2] = { 0, 0 }, events;\r
654 static unsigned long prevEvents = 0;\r
655 int joy, i;\r
656\r
657 keys = gp2x_joystick_read(0);\r
658 if (keys & GP2X_SELECT) {\r
659 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
660 // wait until select is released, so menu would not resume game\r
661 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
662 }\r
663\r
664 keys &= CONFIGURABLE_KEYS;\r
665\r
666 for (i = 0; i < 32; i++)\r
667 {\r
668 if (keys & (1 << i)) {\r
669 int pl, acts = currentConfig.KeyBinds[i];\r
670 if (!acts) continue;\r
671 pl = (acts >> 16) & 1;\r
672 if (combo_keys & (1 << i)) {\r
673 int u = i+1, acts_c = acts & combo_acts;\r
674 // let's try to find the other one\r
675 if (acts_c)\r
676 for (; u < 32; u++)\r
677 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
678 allActions[pl] |= acts_c;\r
679 keys &= ~((1 << i) | (1 << u));\r
680 break;\r
681 }\r
682 // add non-combo actions if combo ones were not found\r
683 if (!acts_c || u == 32)\r
684 allActions[pl] |= acts & ~combo_acts;\r
685 } else {\r
686 allActions[pl] |= acts;\r
687 }\r
688 }\r
689 }\r
690\r
691 // add joy inputs\r
692 if (num_of_joys > 0)\r
693 {\r
694 gp2x_usbjoy_update();\r
695 for (joy = 0; joy < num_of_joys; joy++) {\r
696 int keys = gp2x_usbjoy_check2(joy);\r
697 for (i = 0; i < 32; i++) {\r
698 if (keys & (1 << i)) {\r
699 int acts = currentConfig.JoyBinds[joy][i];\r
700 int pl = (acts >> 16) & 1;\r
701 allActions[pl] |= acts;\r
702 }\r
703 }\r
704 }\r
705 }\r
706\r
707 if(movie_data)\r
708 {\r
709 int offs = frame_count*3 + 0x40;\r
710 if (offs+3 > movie_size) {\r
711 free(movie_data);\r
712 movie_data = 0;\r
713 strcpy(noticeMsg, "END OF MOVIE.");\r
714 printf("END OF MOVIE.\n");\r
715 gettimeofday(&noticeMsgTime, 0);\r
716 } else {\r
717 // MXYZ SACB RLDU\r
718 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU\r
719 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // A\r
720 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // B\r
721 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // A\r
722 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
723 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
724 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
725 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
726 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
727 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
728 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
729 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
730 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
731 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
732 if ((PicoPad[0] & 0x80) || (PicoPad[1] & 0x80))\r
733 printf("%d: start\n", frame_count);\r
734 }\r
735 }\r
736 else\r
737 {\r
738 PicoPad[0] = (unsigned short) allActions[0];\r
739 PicoPad[1] = (unsigned short) allActions[1];\r
740 }\r
741 frame_count++;\r
742\r
743 events = (allActions[0] | allActions[1]) >> 16;\r
744\r
745 // volume is treated in special way and triggered every frame\r
746 if(events & 0x6000) {\r
747 int vol = currentConfig.volume;\r
748 if (events & 0x2000) {\r
749 if (vol < 90) vol++;\r
750 } else {\r
751 if (vol > 0) vol--;\r
752 }\r
753 gp2x_sound_volume(vol, vol);\r
754 sprintf(noticeMsg, "VOL: %02i", vol);\r
755 gettimeofday(&noticeMsgTime, 0);\r
756 currentConfig.volume = vol;\r
757 }\r
758\r
759 events &= ~prevEvents;\r
760 if (events) RunEvents(events);\r
761\r
762 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
763}\r
764\r
765static int snd_excess_add = 0, snd_excess_cnt = 0; // hack\r
766\r
767static void updateSound(void)\r
768{\r
769 int len = (PicoOpt&8)?PsndLen*2:PsndLen;\r
770\r
771 snd_excess_cnt += snd_excess_add;\r
772 if (snd_excess_cnt >= 0x10000) {\r
773 snd_excess_cnt -= 0x10000;\r
774 if (PicoOpt&8) {\r
775 PsndOut[len] = PsndOut[len-2];\r
776 PsndOut[len+1] = PsndOut[len-1];\r
777 len+=2;\r
778 } else {\r
779 PsndOut[len] = PsndOut[len-1];\r
780 len++;\r
781 }\r
782 }\r
783\r
784 gp2x_sound_write(PsndOut, len<<1);\r
785}\r
786\r
787\r
788static void SkipFrame(int do_sound)\r
789{\r
790 void *sndbuff_tmp = 0;\r
791 if (PsndOut && !do_sound) {\r
792 sndbuff_tmp = PsndOut;\r
793 PsndOut = 0;\r
794 }\r
795\r
796 PicoSkipFrame=1;\r
797 PicoFrame();\r
798 PicoSkipFrame=0;\r
799\r
800 if (sndbuff_tmp && !do_sound) {\r
801 PsndOut = sndbuff_tmp;\r
802 }\r
803}\r
804\r
805\r
806static void simpleWait(int thissec, int lim_time)\r
807{\r
808 struct timeval tval;\r
809\r
810 spend_cycles(1024);\r
811 gettimeofday(&tval, 0);\r
812 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
813\r
814 while(tval.tv_usec < lim_time)\r
815 {\r
816 spend_cycles(1024);\r
817 gettimeofday(&tval, 0);\r
818 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
819 }\r
820}\r
821\r
822\r
823void emu_Loop(void)\r
824{\r
825 static int gp2x_old_clock = 200;\r
826 static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
827 char fpsbuff[24]; // fps count c string\r
828 struct timeval tval; // timing\r
829 int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
830 int target_fps, target_frametime, lim_time, i;\r
831 char *notice = 0;\r
832\r
833 printf("entered emu_Loop()\n");\r
834\r
835 if (gp2x_old_clock != currentConfig.CPUclock) {\r
836 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
837 set_FCLK(currentConfig.CPUclock);\r
838 gp2x_old_clock = currentConfig.CPUclock;\r
839 printf(" done\n");\r
840 }\r
841\r
842 if (gp2x_old_gamma != currentConfig.gamma) {\r
843 set_gamma(currentConfig.gamma);\r
844 gp2x_old_gamma = currentConfig.gamma;\r
845 printf("updated gamma to %i\n", currentConfig.gamma);\r
846 }\r
847\r
848 fpsbuff[0] = 0;\r
849\r
850 // make sure we are in correct mode\r
851 vidResetMode();\r
852 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
853 find_combos();\r
854\r
855 // pal/ntsc might have changed, reset related stuff\r
856 target_fps = Pico.m.pal ? 50 : 60;\r
857 target_frametime = 1000000/target_fps;\r
858 reset_timing = 1;\r
859\r
860 // prepare sound stuff\r
861 if(currentConfig.EmuOpt & 4) {\r
862 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
863 /* if 940 is turned off, we need it to be put back to sleep */\r
864 if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
865 Reset940(1);\r
866 Pause940(1);\r
867 }\r
868 sound_rerate();\r
869 }\r
870 //excess_samples = PsndRate - PsndLen*target_fps;\r
871 snd_excess_cnt = 0;\r
872 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
873 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n", PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
874 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
875 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
876 PicoWriteSound = updateSound;\r
877 PsndOut = calloc((PicoOpt&8) ? (PsndLen*4+4) : (PsndLen*2+2), 1);\r
878 PsndRate_old = PsndRate;\r
879 PsndLen_real = PsndLen;\r
880 PicoOpt_old = PicoOpt;\r
881 pal_old = Pico.m.pal;\r
882 } else {\r
883 PsndOut = 0;\r
884 }\r
885\r
886 // loop?\r
887 while (engineState == PGS_Running)\r
888 {\r
889 int modes;\r
890\r
891 gettimeofday(&tval, 0);\r
892 if(reset_timing) {\r
893 reset_timing = 0;\r
894 thissec = tval.tv_sec;\r
895 frames_shown = frames_done = tval.tv_usec/target_frametime;\r
896 }\r
897\r
898 // show notice message?\r
899 if(noticeMsgTime.tv_sec) {\r
900 static int noticeMsgSum;\r
901 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
902 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
903 clearArea(0);\r
904 notice = 0;\r
905 } else {\r
906 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
907 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
908 notice = noticeMsg;\r
909 }\r
910 }\r
911\r
912 // check for mode changes\r
913 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
914 if (modes != oldmodes) {\r
915 int scalex = 320;\r
916 osd_fps_x = OSD_FPS_X;\r
917 if (modes & 4) {\r
918 vidCpyM2 = vidCpyM2_40col;\r
919 } else {\r
920 if (PicoOpt & 0x100) {\r
921 vidCpyM2 = vidCpyM2_32col_nobord;\r
922 scalex = 256;\r
923 osd_fps_x = OSD_FPS_X - 64;\r
924 } else {\r
925 vidCpyM2 = vidCpyM2_32col;\r
926 }\r
927 }\r
928 gp2x_video_RGB_setscaling(scalex, 240);\r
929 oldmodes = modes;\r
930 clearArea(1);\r
931 }\r
932\r
933 // second changed?\r
934 if(thissec != tval.tv_sec) {\r
935#ifdef BENCHMARK\r
936 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
937 if(++bench == 10) {\r
938 bench = 0;\r
939 bench_fps_s = bench_fps;\r
940 bf[bfp++ & 3] = bench_fps;\r
941 bench_fps = 0;\r
942 }\r
943 bench_fps += frames_shown;\r
944 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
945#else\r
946 if(currentConfig.EmuOpt & 2)\r
947 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
948#endif\r
949 thissec = tval.tv_sec;\r
950\r
951 if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
952 frames_done = frames_shown = 0;\r
953 } else {\r
954 // it is quite common for this implementation to leave 1 fame unfinished\r
955 // when second changes, but we don't want buffer to starve.\r
956 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
957 updateKeys();\r
958 SkipFrame(1); frames_done++;\r
959 }\r
960\r
961 frames_done -= target_fps; if (frames_done < 0) frames_done = 0;\r
962 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
963 if (frames_shown > frames_done) frames_shown = frames_done;\r
964 }\r
965 }\r
966\r
967 lim_time = (frames_done+1) * target_frametime;\r
968 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
969 for(i = 0; i < currentConfig.Frameskip; i++) {\r
970 updateKeys();\r
971 SkipFrame(1); frames_done++;\r
972 if (PsndOut) { // do framelimitting if sound is enabled\r
973 gettimeofday(&tval, 0);\r
974 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
975 if(tval.tv_usec < lim_time) { // we are too fast\r
976 simpleWait(thissec, lim_time);\r
977 }\r
978 }\r
979 lim_time += target_frametime;\r
980 }\r
981 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
982 // no time left for this frame - skip\r
983 updateKeys();\r
984 SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
985 continue;\r
986 }\r
987\r
988 updateKeys();\r
989 PicoFrame();\r
990\r
991 // check time\r
992 gettimeofday(&tval, 0);\r
993 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
994\r
995 // sleep if we are still too fast\r
996 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
997 {\r
998 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
999 gettimeofday(&tval, 0);\r
1000 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1001 if(tval.tv_usec < lim_time)\r
1002 {\r
1003 // we are too fast\r
1004 simpleWait(thissec, lim_time);\r
1005 }\r
1006 }\r
1007\r
1008 blit(fpsbuff, notice);\r
1009\r
1010 frames_done++; frames_shown++;\r
1011 }\r
1012\r
1013 // save SRAM\r
1014 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1015 emu_SaveLoadGame(0, 1);\r
1016 SRam.changed = 0;\r
1017 }\r
1018\r
1019 if (PsndOut != 0) {\r
1020 free(PsndOut);\r
1021 PsndOut = 0;\r
1022 }\r
1023}\r
1024\r
1025\r
1026void emu_ResetGame(void)\r
1027{\r
1028 PicoReset(0);\r
1029 reset_timing = 1;\r
1030}\r
1031\r
1032\r
1033size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1034{\r
1035 return gzread(file, p, _n);\r
1036}\r
1037\r
1038\r
1039size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1040{\r
1041 return gzwrite(file, p, _n);\r
1042}\r
1043\r
1044typedef unsigned int (*STATE_SL_FUNC)(void *, unsigned int, unsigned int, void *);\r
1045\r
1046int emu_SaveLoadGame(int load, int sram)\r
1047{\r
1048 int ret = 0;\r
1049 char saveFname[512];\r
1050\r
1051 // make save filename\r
1052 romfname_ext(saveFname, "");\r
1053 if(sram) strcat(saveFname, ".srm");\r
1054 else {\r
1055 if(state_slot > 0 && state_slot < 10) sprintf(saveFname, "%s.%i", saveFname, state_slot);\r
1056 strcat(saveFname, ".mds");\r
1057 }\r
1058\r
1059 printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1060\r
1061 if(sram) {\r
1062 FILE *sramFile;\r
1063 int sram_size = SRam.end-SRam.start+1;\r
1064 if(SRam.reg_back & 4) sram_size=0x2000;\r
1065 if(!SRam.data) return 0; // SRam forcefully disabled for this game\r
1066 if(load) {\r
1067 sramFile = fopen(saveFname, "rb");\r
1068 if(!sramFile) return -1;\r
1069 fread(SRam.data, 1, sram_size, sramFile);\r
1070 fclose(sramFile);\r
1071 } else {\r
1072 // sram save needs some special processing\r
1073 // see if we have anything to save\r
1074 for(; sram_size > 0; sram_size--)\r
1075 if(SRam.data[sram_size-1]) break;\r
1076\r
1077 if(sram_size) {\r
1078 sramFile = fopen(saveFname, "wb");\r
1079 ret = fwrite(SRam.data, 1, sram_size, sramFile);\r
1080 ret = (ret != sram_size) ? -1 : 0;\r
1081 fclose(sramFile);\r
1082 sync();\r
1083 }\r
1084 }\r
1085 return ret;\r
1086 } else {\r
1087 void *PmovFile = NULL;\r
1088 // try gzip first\r
1089 if(currentConfig.EmuOpt & 8) {\r
1090 strcat(saveFname, ".gz");\r
1091 if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1092 areaRead = gzRead2;\r
1093 areaWrite = gzWrite2;\r
1094 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1095 } else\r
1096 saveFname[strlen(saveFname)-3] = 0;\r
1097 }\r
1098 if(!PmovFile) { // gzip failed or was disabled\r
1099 if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1100 areaRead = (STATE_SL_FUNC) fread;\r
1101 areaWrite = (STATE_SL_FUNC) fwrite;\r
1102 }\r
1103 }\r
1104 if(PmovFile) {\r
1105 PmovState(load ? 6 : 5, PmovFile);\r
1106 strcpy(noticeMsg, load ? "GAME LOADED " : "GAME SAVED ");\r
1107 if(areaRead == gzRead2)\r
1108 gzclose(PmovFile);\r
1109 else fclose ((FILE *) PmovFile);\r
1110 PmovFile = 0;\r
1111 if (!load) sync();\r
1112 else Pico.m.dirtyPal=1;\r
1113 } else {\r
1114 strcpy(noticeMsg, load ? "LOAD FAILED " : "SAVE FAILED ");\r
1115 ret = -1;\r
1116 }\r
1117\r
1118 gettimeofday(&noticeMsgTime, 0);\r
1119 return ret;\r
1120 }\r
1121}\r
PicoDrive's frontend in a lib