notaz.gp2x.de / picodrive.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
svp compiler: few more optimizations
[picodrive.git] / platform / common / emu.c
CommitLineData
ea8c405f 1// (c) Copyright 2006-2007 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 <ctype.h> // tolower\r
9#ifndef NO_SYNC\r
10#include <unistd.h>\r
11#endif\r
12\r
13#include "emu.h"\r
14#include "menu.h"\r
15#include "fonts.h"\r
16#include "lprintf.h"\r
17\r
18#include <Pico/PicoInt.h>\r
19#include <Pico/Patch.h>\r
20#include <zlib/zlib.h>\r
21\r
22#if defined(__GP2X__)\r
23 #include "../gp2x/gp2x.h"\r
24 #define SCREEN_WIDTH 320\r
25 #define SCREEN_BUFFER gp2x_screen\r
26#elif defined(__GIZ__)\r
27 #include "../gizmondo/giz.h"\r
28 #define SCREEN_WIDTH 321\r
1820b5a7 29 #define SCREEN_BUFFER giz_screen\r
30#elif defined(PSP)\r
31 #include "../psp/psp.h"\r
32 #define SCREEN_WIDTH 512\r
33 #define SCREEN_BUFFER psp_screen\r
ea8c405f 34#endif\r
35\r
36char *PicoConfigFile = "picoconfig.bin";\r
37currentConfig_t currentConfig;\r
eacee137 38int rom_loaded = 0;\r
ea8c405f 39char noticeMsg[64];\r
40int state_slot = 0;\r
41int config_slot = 0, config_slot_current = 0;\r
42\r
43unsigned char *movie_data = NULL;\r
44static int movie_size = 0;\r
45\r
46// provided by platform code:\r
47extern char romFileName[];\r
48extern void emu_noticeMsgUpdated(void);\r
49extern void emu_getMainDir(char *dst, int len);\r
50extern void emu_setDefaultConfig(void);\r
51extern void menu_romload_prepare(const char *rom_name);\r
52extern void menu_romload_end(void);\r
53\r
54\r
55// utilities\r
56static void strlwr_(char* string)\r
57{\r
58 while ( (*string++ = (char)tolower(*string)) );\r
59}\r
60\r
61static int try_rfn_cut(void)\r
62{\r
63 FILE *tmp;\r
64 char *p;\r
65\r
66 p = romFileName + strlen(romFileName) - 1;\r
67 for (; p > romFileName; p--)\r
68 if (*p == '.') break;\r
69 *p = 0;\r
70\r
71 if((tmp = fopen(romFileName, "rb"))) {\r
72 fclose(tmp);\r
73 return 1;\r
74 }\r
75 return 0;\r
76}\r
77\r
78static void get_ext(char *file, char *ext)\r
79{\r
80 char *p;\r
81\r
82 p = file + strlen(file) - 4;\r
83 if (p < file) p = file;\r
84 strncpy(ext, p, 4);\r
85 ext[4] = 0;\r
86 strlwr_(ext);\r
87}\r
88\r
89char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };\r
90char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210" };\r
91char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
92\r
93int emu_findBios(int region, char **bios_file)\r
94{\r
95 static char bios_path[1024];\r
96 int i, count;\r
97 char **files;\r
98 FILE *f = NULL;\r
99\r
100 if (region == 4) { // US\r
101 files = biosfiles_us;\r
102 count = sizeof(biosfiles_us) / sizeof(char *);\r
103 } else if (region == 8) { // EU\r
104 files = biosfiles_eu;\r
105 count = sizeof(biosfiles_eu) / sizeof(char *);\r
106 } else if (region == 1 || region == 2) {\r
107 files = biosfiles_jp;\r
108 count = sizeof(biosfiles_jp) / sizeof(char *);\r
109 } else {\r
110 return 0;\r
111 }\r
112\r
113 for (i = 0; i < count; i++)\r
114 {\r
115 emu_getMainDir(bios_path, sizeof(bios_path));\r
116 strcat(bios_path, files[i]);\r
117 strcat(bios_path, ".bin");\r
118 f = fopen(bios_path, "rb");\r
119 if (f) break;\r
120\r
121 bios_path[strlen(bios_path) - 4] = 0;\r
122 strcat(bios_path, ".zip");\r
123 f = fopen(bios_path, "rb");\r
124 if (f) break;\r
125 }\r
126\r
127 if (f) {\r
128 lprintf("using bios: %s\n", bios_path);\r
129 fclose(f);\r
130 if (bios_file) *bios_file = bios_path;\r
131 return 1;\r
132 } else {\r
133 sprintf(menuErrorMsg, "no %s BIOS files found, read docs",\r
134 region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
135 lprintf("%s\n", menuErrorMsg);\r
136 return 0;\r
137 }\r
138}\r
139\r
c6196c0f 140/* check if the name begins with BIOS name */\r
141static int emu_isBios(const char *name)\r
142{\r
143 int i;\r
144 for (i = 0; i < sizeof(biosfiles_us)/sizeof(biosfiles_us[0]); i++)\r
145 if (strstr(name, biosfiles_us[i]) != NULL) return 1;\r
146 for (i = 0; i < sizeof(biosfiles_eu)/sizeof(biosfiles_eu[0]); i++)\r
147 if (strstr(name, biosfiles_eu[i]) != NULL) return 1;\r
148 for (i = 0; i < sizeof(biosfiles_jp)/sizeof(biosfiles_jp[0]); i++)\r
149 if (strstr(name, biosfiles_jp[i]) != NULL) return 1;\r
150 return 0;\r
151}\r
152\r
ea8c405f 153/* checks if romFileName points to valid MegaCD image\r
154 * if so, checks for suitable BIOS */\r
155int emu_cdCheck(int *pregion)\r
156{\r
157 unsigned char buf[32];\r
158 pm_file *cd_f;\r
159 int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe\r
160\r
161 cd_f = pm_open(romFileName);\r
162 if (!cd_f) return 0; // let the upper level handle this\r
163\r
164 if (pm_read(buf, 32, cd_f) != 32) {\r
165 pm_close(cd_f);\r
166 return 0;\r
167 }\r
168\r
169 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1; // Sega CD (ISO)\r
170 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2; // Sega CD (BIN)\r
171 if (type == 0) {\r
172 pm_close(cd_f);\r
173 return 0;\r
174 }\r
175\r
176 /* it seems we have a CD image here. Try to detect region now.. */\r
177 pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
178 pm_read(buf, 1, cd_f);\r
179 pm_close(cd_f);\r
180\r
181 if (buf[0] == 0x64) region = 8; // EU\r
182 if (buf[0] == 0xa1) region = 1; // JAP\r
183\r
184 lprintf("detected %s Sega/Mega CD image with %s region\n",\r
185 type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
186\r
187 if (pregion != NULL) *pregion = region;\r
188\r
189 return type;\r
190}\r
191\r
192int emu_ReloadRom(void)\r
193{\r
194 unsigned int rom_size = 0;\r
195 char *used_rom_name = romFileName;\r
eacee137 196 unsigned char *rom_data = NULL;\r
ea8c405f 197 char ext[5];\r
198 pm_file *rom;\r
199 int ret, cd_state, cd_region, cfg_loaded = 0;\r
200\r
201 lprintf("emu_ReloadRom(%s)\n", romFileName);\r
202\r
203 get_ext(romFileName, ext);\r
204\r
205 // detect wrong extensions\r
eacee137 206 if (!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
ea8c405f 207 sprintf(menuErrorMsg, "Not a ROM selected.");\r
208 return 0;\r
209 }\r
210\r
211 PicoPatchUnload();\r
212\r
213 // check for movie file\r
eacee137 214 if (movie_data) {\r
ea8c405f 215 free(movie_data);\r
216 movie_data = 0;\r
217 }\r
eacee137 218 if (!strcmp(ext, ".gmv")) {\r
ea8c405f 219 // check for both gmv and rom\r
220 int dummy;\r
221 FILE *movie_file = fopen(romFileName, "rb");\r
222 if(!movie_file) {\r
223 sprintf(menuErrorMsg, "Failed to open movie.");\r
224 return 0;\r
225 }\r
226 fseek(movie_file, 0, SEEK_END);\r
227 movie_size = ftell(movie_file);\r
228 fseek(movie_file, 0, SEEK_SET);\r
229 if(movie_size < 64+3) {\r
230 sprintf(menuErrorMsg, "Invalid GMV file.");\r
231 fclose(movie_file);\r
232 return 0;\r
233 }\r
234 movie_data = malloc(movie_size);\r
235 if(movie_data == NULL) {\r
236 sprintf(menuErrorMsg, "low memory.");\r
237 fclose(movie_file);\r
238 return 0;\r
239 }\r
240 fread(movie_data, 1, movie_size, movie_file);\r
241 fclose(movie_file);\r
242 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
243 sprintf(menuErrorMsg, "Invalid GMV file.");\r
244 return 0;\r
245 }\r
246 dummy = try_rfn_cut() || try_rfn_cut();\r
247 if (!dummy) {\r
248 sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
249 return 0;\r
250 }\r
251 get_ext(romFileName, ext);\r
252 }\r
253 else if (!strcmp(ext, ".pat")) {\r
254 int dummy;\r
255 PicoPatchLoad(romFileName);\r
256 dummy = try_rfn_cut() || try_rfn_cut();\r
257 if (!dummy) {\r
258 sprintf(menuErrorMsg, "Could't find a ROM to patch.");\r
259 return 0;\r
260 }\r
261 get_ext(romFileName, ext);\r
262 }\r
263\r
264 if ((PicoMCD & 1) && Pico_mcd != NULL)\r
265 Stop_CD();\r
266\r
267 // check for MegaCD image\r
268 cd_state = emu_cdCheck(&cd_region);\r
269 if (cd_state > 0)\r
270 {\r
271 // valid CD image, check for BIOS..\r
272\r
273 // we need to have config loaded at this point\r
274 ret = emu_ReadConfig(1, 1);\r
275 if (!ret) emu_ReadConfig(0, 1);\r
276 cfg_loaded = 1;\r
277\r
278 if (PicoRegionOverride) {\r
279 cd_region = PicoRegionOverride;\r
280 lprintf("overrided region to %s\n", cd_region != 4 ? (cd_region == 8 ? "EU" : "JAP") : "USA");\r
281 }\r
282 if (!emu_findBios(cd_region, &used_rom_name)) {\r
283 // bios_help() ?\r
284 return 0;\r
285 }\r
286\r
287 PicoMCD |= 1;\r
288 get_ext(used_rom_name, ext);\r
289 }\r
290 else\r
291 {\r
292 if (PicoMCD & 1) Stop_CD();\r
293 PicoMCD &= ~1;\r
294 }\r
295\r
296 rom = pm_open(used_rom_name);\r
eacee137 297 if (!rom) {\r
ea8c405f 298 sprintf(menuErrorMsg, "Failed to open rom.");\r
299 return 0;\r
300 }\r
301\r
4b167c12 302 menu_romload_prepare(used_rom_name); // also CD load\r
ea8c405f 303\r
eacee137 304 PicoCartUnload();\r
305 rom_loaded = 0;\r
ea8c405f 306\r
eacee137 307 if ( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
ea8c405f 308 sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
309 lprintf("%s\n", menuErrorMsg);\r
310 pm_close(rom);\r
311 menu_romload_end();\r
312 return 0;\r
313 }\r
314 pm_close(rom);\r
ea8c405f 315\r
316 // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
eacee137 317 if (rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
ea8c405f 318 ((*(unsigned char *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
319 if (rom_data) free(rom_data);\r
ea8c405f 320 sprintf(menuErrorMsg, "Not a ROM selected.");\r
4b167c12 321 menu_romload_end();\r
ea8c405f 322 return 0;\r
323 }\r
324\r
325 // load config for this ROM (do this before insert to get correct region)\r
326 if (!cfg_loaded) {\r
327 ret = emu_ReadConfig(1, 1);\r
328 if (!ret) emu_ReadConfig(0, 1);\r
329 }\r
330\r
331 lprintf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
eacee137 332 if (PicoCartInsert(rom_data, rom_size)) {\r
ea8c405f 333 sprintf(menuErrorMsg, "Failed to load ROM.");\r
4b167c12 334 menu_romload_end();\r
ea8c405f 335 return 0;\r
336 }\r
337\r
338 Pico.m.frame_count = 0;\r
339\r
340 // insert CD if it was detected\r
341 if (cd_state > 0) {\r
342 ret = Insert_CD(romFileName, cd_state == 2);\r
343 if (ret != 0) {\r
344 sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");\r
345 lprintf("%s\n", menuErrorMsg);\r
4b167c12 346 menu_romload_end();\r
ea8c405f 347 return 0;\r
348 }\r
349 }\r
350\r
4b167c12 351 menu_romload_end();\r
352\r
c6196c0f 353 if (!emu_isBios(romFileName))\r
354 {\r
355 // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
356 strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
357 currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
358 }\r
ea8c405f 359\r
360 if (PicoPatches) {\r
361 PicoPatchPrepare();\r
362 PicoPatchApply();\r
363 }\r
364\r
365 // additional movie stuff\r
366 if (movie_data) {\r
367 if(movie_data[0x14] == '6')\r
368 PicoOpt |= 0x20; // 6 button pad\r
369 else PicoOpt &= ~0x20;\r
370 PicoOpt |= 0x10040; // accurate timing, no VDP fifo timing\r
371 if(movie_data[0xF] >= 'A') {\r
372 if(movie_data[0x16] & 0x80) {\r
373 PicoRegionOverride = 8;\r
374 } else {\r
375 PicoRegionOverride = 4;\r
376 }\r
377 PicoReset(0);\r
378 // TODO: bits 6 & 5\r
379 }\r
380 movie_data[0x18+30] = 0;\r
381 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
382 }\r
383 else\r
384 {\r
385 PicoOpt &= ~0x10000;\r
386 if(Pico.m.pal) {\r
387 strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
388 } else {\r
389 strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
390 }\r
391 }\r
392 emu_noticeMsgUpdated();\r
393\r
394 // load SRAM for this ROM\r
eacee137 395 if (currentConfig.EmuOpt & 1)\r
ea8c405f 396 emu_SaveLoadGame(1, 1);\r
397\r
eacee137 398 rom_loaded = 1;\r
ea8c405f 399 return 1;\r
400}\r
401\r
402\r
403static void romfname_ext(char *dst, const char *prefix, const char *ext)\r
404{\r
405 char *p;\r
406 int prefix_len = 0;\r
407\r
408 // make save filename\r
409 for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
410 *dst = 0;\r
411 if (prefix) {\r
412 strcpy(dst, prefix);\r
413 prefix_len = strlen(prefix);\r
414 }\r
415 strncpy(dst + prefix_len, p, 511-prefix_len);\r
416 dst[511-8] = 0;\r
417 if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
418 if (ext) strcat(dst, ext);\r
419}\r
420\r
421\r
422int emu_ReadConfig(int game, int no_defaults)\r
423{\r
424 FILE *f;\r
425 char cfg[512], extbuf[16];\r
426 int bread = 0;\r
427\r
428 if (!game)\r
429 {\r
430 if (!no_defaults)\r
431 {\r
432 emu_setDefaultConfig();\r
433 }\r
434 strncpy(cfg, PicoConfigFile, 511);\r
435 if (config_slot != 0)\r
436 {\r
437 char *p = strrchr(cfg, '.');\r
438 if (p == NULL) p = cfg + strlen(cfg);\r
439 sprintf(extbuf, ".%i.pbcfg", config_slot);\r
440 strncpy(p, extbuf, 511 - (p - cfg));\r
441 }\r
442 cfg[511] = 0;\r
443 } else {\r
444 if (config_slot != 0)\r
445 sprintf(extbuf, ".%i.pbcfg", config_slot);\r
446 else strcpy(extbuf, ".pbcfg");\r
447 romfname_ext(cfg, "cfg/", extbuf);\r
448 f = fopen(cfg, "rb");\r
449 if (!f) romfname_ext(cfg, NULL, ".pbcfg");\r
450 else fclose(f);\r
451 }\r
452\r
453 lprintf("emu_ReadConfig: %s ", cfg);\r
454 f = fopen(cfg, "rb");\r
455 if (f) {\r
456 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
457 fclose(f);\r
458 }\r
459 lprintf(bread > 0 ? "(ok)\n" : "(failed)\n");\r
460\r
461 PicoOpt = currentConfig.PicoOpt;\r
462 PsndRate = currentConfig.PsndRate;\r
463 PicoRegionOverride = currentConfig.PicoRegion;\r
464 PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;\r
465 PicoCDBuffers = currentConfig.PicoCDBuffers;\r
466 //scaling_update();\r
467 // some sanity checks\r
468 if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
2445b7cb 469#ifdef PSP\r
470 if (currentConfig.gamma < -4 || currentConfig.gamma > 16) currentConfig.gamma = 0;\r
471#else\r
ea8c405f 472 if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
2445b7cb 473#endif\r
ea8c405f 474 if (currentConfig.volume < 0 || currentConfig.volume > 99) currentConfig.volume = 50;\r
9839d126 475#ifdef __GP2X__\r
ea8c405f 476 // if volume keys are unbound, bind them to volume control\r
477 if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
478 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
479 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
480 }\r
9839d126 481#endif\r
ea8c405f 482 if (bread > 0) config_slot_current = config_slot;\r
483 return (bread > 0); // == sizeof(currentConfig));\r
484}\r
485\r
486\r
487int emu_WriteConfig(int game)\r
488{\r
489 FILE *f;\r
490 char cfg[512], extbuf[16];\r
491 int bwrite = 0;\r
492\r
493 if (!game)\r
494 {\r
495 strncpy(cfg, PicoConfigFile, 511);\r
496 if (config_slot != 0)\r
497 {\r
498 char *p = strrchr(cfg, '.');\r
499 if (p == NULL) p = cfg + strlen(cfg);\r
500 sprintf(extbuf, ".%i.pbcfg", config_slot);\r
501 strncpy(p, extbuf, 511 - (p - cfg));\r
502 }\r
503 cfg[511] = 0;\r
504 } else {\r
505 if (config_slot != 0)\r
506 sprintf(extbuf, ".%i.pbcfg", config_slot);\r
507 else strcpy(extbuf, ".pbcfg");\r
508 romfname_ext(cfg, "cfg/", extbuf);\r
509 }\r
510\r
511 lprintf("emu_WriteConfig: %s ", cfg);\r
512 f = fopen(cfg, "wb");\r
513 if (f) {\r
514 currentConfig.PicoOpt = PicoOpt;\r
515 currentConfig.PsndRate = PsndRate;\r
516 currentConfig.PicoRegion = PicoRegionOverride;\r
517 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;\r
518 currentConfig.PicoCDBuffers = PicoCDBuffers;\r
519 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
520 fflush(f);\r
521 fclose(f);\r
522#ifndef NO_SYNC\r
523 sync();\r
524#endif\r
525 }\r
526 lprintf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
527\r
528 if (bwrite == sizeof(currentConfig)) config_slot_current = config_slot;\r
529 return (bwrite == sizeof(currentConfig));\r
530}\r
531\r
532\r
533void emu_textOut8(int x, int y, const char *text)\r
534{\r
535 int i,l,len=strlen(text);\r
536 unsigned char *screen = (unsigned char *)SCREEN_BUFFER + x + y*SCREEN_WIDTH;\r
537\r
538 /* always using built-in font */\r
539 for (i = 0; i < len; i++)\r
540 {\r
541 for (l=0;l<8;l++)\r
542 {\r
543 unsigned char fd = fontdata8x8[((text[i])*8)+l];\r
544 if (fd&0x80) screen[l*SCREEN_WIDTH+0]=0xf0;\r
545 if (fd&0x40) screen[l*SCREEN_WIDTH+1]=0xf0;\r
546 if (fd&0x20) screen[l*SCREEN_WIDTH+2]=0xf0;\r
547 if (fd&0x10) screen[l*SCREEN_WIDTH+3]=0xf0;\r
548 if (fd&0x08) screen[l*SCREEN_WIDTH+4]=0xf0;\r
549 if (fd&0x04) screen[l*SCREEN_WIDTH+5]=0xf0;\r
550 if (fd&0x02) screen[l*SCREEN_WIDTH+6]=0xf0;\r
551 if (fd&0x01) screen[l*SCREEN_WIDTH+7]=0xf0;\r
552 }\r
553 screen += 8;\r
554 }\r
555}\r
556\r
557void emu_textOut16(int x, int y, const char *text)\r
558{\r
559 int i,l,len=strlen(text);\r
560 unsigned short *screen = (unsigned short *)SCREEN_BUFFER + x + y*SCREEN_WIDTH;\r
561\r
562 for (i = 0; i < len; i++)\r
563 {\r
564 for (l=0;l<8;l++)\r
565 {\r
566 unsigned char fd = fontdata8x8[((text[i])*8)+l];\r
567 if(fd&0x80) screen[l*SCREEN_WIDTH+0]=0xffff;\r
568 if(fd&0x40) screen[l*SCREEN_WIDTH+1]=0xffff;\r
569 if(fd&0x20) screen[l*SCREEN_WIDTH+2]=0xffff;\r
570 if(fd&0x10) screen[l*SCREEN_WIDTH+3]=0xffff;\r
571 if(fd&0x08) screen[l*SCREEN_WIDTH+4]=0xffff;\r
572 if(fd&0x04) screen[l*SCREEN_WIDTH+5]=0xffff;\r
573 if(fd&0x02) screen[l*SCREEN_WIDTH+6]=0xffff;\r
574 if(fd&0x01) screen[l*SCREEN_WIDTH+7]=0xffff;\r
575 }\r
576 screen += 8;\r
577 }\r
578}\r
579\r
580\r
581void emu_updateMovie(void)\r
582{\r
583 int offs = Pico.m.frame_count*3 + 0x40;\r
584 if (offs+3 > movie_size) {\r
585 free(movie_data);\r
586 movie_data = 0;\r
587 strcpy(noticeMsg, "END OF MOVIE.");\r
588 lprintf("END OF MOVIE.\n");\r
589 emu_noticeMsgUpdated();\r
590 } else {\r
591 // MXYZ SACB RLDU\r
592 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU\r
593 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // A\r
594 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // B\r
595 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // A\r
596 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
597 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
598 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
599 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
600 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
601 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
602 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
603 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
604 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
605 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
606 }\r
607}\r
608\r
609\r
610static size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
611{\r
612 return gzread(file, p, _n);\r
613}\r
614\r
615\r
616static size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
617{\r
618 return gzwrite(file, p, _n);\r
619}\r
620\r
621static int try_ropen_file(const char *fname)\r
622{\r
623 FILE *f;\r
624\r
625 f = fopen(fname, "rb");\r
626 if (f) {\r
627 fclose(f);\r
628 return 1;\r
629 }\r
630 return 0;\r
631}\r
632\r
633char *emu_GetSaveFName(int load, int is_sram, int slot)\r
634{\r
635 static char saveFname[512];\r
636 char ext[16];\r
637\r
638 if (is_sram)\r
639 {\r
640 romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");\r
641 if (load) {\r
642 if (try_ropen_file(saveFname)) return saveFname;\r
643 // try in current dir..\r
644 romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");\r
645 if (try_ropen_file(saveFname)) return saveFname;\r
646 return NULL; // give up\r
647 }\r
648 }\r
649 else\r
650 {\r
651 ext[0] = 0;\r
652 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
653 strcat(ext, (currentConfig.EmuOpt & 8) ? ".mds.gz" : ".mds");\r
654\r
655 romfname_ext(saveFname, "mds/", ext);\r
656 if (load) {\r
657 if (try_ropen_file(saveFname)) return saveFname;\r
658 romfname_ext(saveFname, NULL, ext);\r
659 if (try_ropen_file(saveFname)) return saveFname;\r
660 if (currentConfig.EmuOpt & 8) {\r
661 ext[0] = 0;\r
662 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
663 strcat(ext, ".mds");\r
664\r
665 romfname_ext(saveFname, "mds/", ext);\r
666 if (try_ropen_file(saveFname)) return saveFname;\r
667 romfname_ext(saveFname, NULL, ext);\r
668 if (try_ropen_file(saveFname)) return saveFname;\r
669 }\r
670 return NULL;\r
671 }\r
672 }\r
673\r
674 return saveFname;\r
675}\r
676\r
677int emu_checkSaveFile(int slot)\r
678{\r
679 return emu_GetSaveFName(1, 0, slot) ? 1 : 0;\r
680}\r
681\r
682void emu_setSaveStateCbs(int gz)\r
683{\r
684 if (gz) {\r
685 areaRead = gzRead2;\r
686 areaWrite = gzWrite2;\r
687 areaEof = (areaeof *) gzeof;\r
688 areaSeek = (areaseek *) gzseek;\r
689 areaClose = (areaclose *) gzclose;\r
690 } else {\r
691 areaRead = (arearw *) fread;\r
692 areaWrite = (arearw *) fwrite;\r
693 areaEof = (areaeof *) feof;\r
694 areaSeek = (areaseek *) fseek;\r
695 areaClose = (areaclose *) fclose;\r
696 }\r
697}\r
698\r
699int emu_SaveLoadGame(int load, int sram)\r
700{\r
701 int ret = 0;\r
702 char *saveFname;\r
703\r
704 // make save filename\r
705 saveFname = emu_GetSaveFName(load, sram, state_slot);\r
706 if (saveFname == NULL) {\r
707 if (!sram) {\r
708 strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED ");\r
709 emu_noticeMsgUpdated();\r
710 }\r
711 return -1;\r
712 }\r
713\r
714 lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
715\r
da42200b 716 if (sram)\r
717 {\r
ea8c405f 718 FILE *sramFile;\r
719 int sram_size;\r
720 unsigned char *sram_data;\r
721 int truncate = 1;\r
722 if (PicoMCD&1) {\r
723 if (PicoOpt&0x8000) { // MCD RAM cart?\r
724 sram_size = 0x12000;\r
725 sram_data = SRam.data;\r
726 if (sram_data)\r
727 memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);\r
728 } else {\r
729 sram_size = 0x2000;\r
730 sram_data = Pico_mcd->bram;\r
731 truncate = 0; // the .brm may contain RAM cart data after normal brm\r
732 }\r
733 } else {\r
734 sram_size = SRam.end-SRam.start+1;\r
735 if(Pico.m.sram_reg & 4) sram_size=0x2000;\r
736 sram_data = SRam.data;\r
737 }\r
738 if (!sram_data) return 0; // SRam forcefully disabled for this game\r
739\r
740 if (load) {\r
741 sramFile = fopen(saveFname, "rb");\r
742 if(!sramFile) return -1;\r
743 fread(sram_data, 1, sram_size, sramFile);\r
744 fclose(sramFile);\r
745 if ((PicoMCD&1) && (PicoOpt&0x8000))\r
746 memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);\r
747 } else {\r
748 // sram save needs some special processing\r
749 // see if we have anything to save\r
750 for (; sram_size > 0; sram_size--)\r
751 if (sram_data[sram_size-1]) break;\r
752\r
753 if (sram_size) {\r
754 sramFile = fopen(saveFname, truncate ? "wb" : "r+b");\r
755 if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry\r
756 if (!sramFile) return -1;\r
757 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
758 ret = (ret != sram_size) ? -1 : 0;\r
759 fclose(sramFile);\r
760#ifndef NO_SYNC\r
761 sync();\r
762#endif\r
763 }\r
764 }\r
765 return ret;\r
766 }\r
767 else\r
768 {\r
769 void *PmovFile = NULL;\r
da42200b 770 if (strcmp(saveFname + strlen(saveFname) - 3, ".gz") == 0)\r
771 {\r
ea8c405f 772 if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
773 emu_setSaveStateCbs(1);\r
da42200b 774 if (!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
ea8c405f 775 }\r
776 }\r
777 else\r
778 {\r
779 if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
780 emu_setSaveStateCbs(0);\r
781 }\r
782 }\r
783 if(PmovFile) {\r
784 ret = PmovState(load ? 6 : 5, PmovFile);\r
785 areaClose(PmovFile);\r
786 PmovFile = 0;\r
787 if (load) Pico.m.dirtyPal=1;\r
788#ifndef NO_SYNC\r
789 else sync();\r
790#endif\r
791 }\r
792 else ret = -1;\r
793 if (!ret)\r
794 strcpy(noticeMsg, load ? "GAME LOADED " : "GAME SAVED ");\r
795 else\r
796 {\r
797 strcpy(noticeMsg, load ? "LOAD FAILED " : "SAVE FAILED ");\r
798 ret = -1;\r
799 }\r
800\r
801 emu_noticeMsgUpdated();\r
802 return ret;\r
803 }\r
804}\r
fast MegaDrive/MegaCD/32X emulator