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minor fixes from old tree
[picodrive.git] / platform / common / emu.c
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1/*\r
2 * PicoDrive\r
3 * (C) notaz, 2007-2010\r
4 *\r
5 * This work is licensed under the terms of MAME license.\r
6 * See COPYING file in the top-level directory.\r
7 */\r
8\r
9#include <stdio.h>\r
10#include <stdlib.h>\r
11#include <stdarg.h>\r
12#ifndef NO_SYNC\r
13#include <unistd.h>\r
14#endif\r
15\r
16#include "../libpicofe/posix.h"\r
17#include "../libpicofe/input.h"\r
18#include "../libpicofe/fonts.h"\r
19#include "../libpicofe/lprintf.h"\r
20#include "../libpicofe/plat.h"\r
21#include "emu.h"\r
22#include "input_pico.h"\r
23#include "menu_pico.h"\r
24#include "config.h"\r
25\r
26#include <pico/pico_int.h>\r
27#include <pico/patch.h>\r
28#include <pico/cd/cue.h>\r
29\r
30\r
31#define STATUS_MSG_TIMEOUT 2000\r
32\r
33void *g_screen_ptr;\r
34\r
35#if !SCREEN_SIZE_FIXED\r
36int g_screen_width = SCREEN_WIDTH;\r
37int g_screen_height = SCREEN_HEIGHT;\r
38#endif\r
39\r
40char *PicoConfigFile = "config.cfg";\r
41currentConfig_t currentConfig, defaultConfig;\r
42int state_slot = 0;\r
43int config_slot = 0, config_slot_current = 0;\r
44int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
45int pico_inp_mode = 0;\r
46int engineState = PGS_Menu;\r
47\r
48/* tmp buff to reduce stack usage for plats with small stack */\r
49static char static_buff[512];\r
50/* TODO: len checking */\r
51char rom_fname_reload[512];\r
52char rom_fname_loaded[512];\r
53int rom_loaded = 0;\r
54int reset_timing = 0;\r
55static unsigned int notice_msg_time; /* when started showing */\r
56static char noticeMsg[40];\r
57\r
58unsigned char *movie_data = NULL;\r
59static int movie_size = 0;\r
60\r
61\r
62/* don't use tolower() for easy old glibc binary compatibility */\r
63static void strlwr_(char *string)\r
64{\r
65 char *p;\r
66 for (p = string; *p; p++)\r
67 if ('A' <= *p && *p <= 'Z')\r
68 *p += 'a' - 'A';\r
69}\r
70\r
71static int try_rfn_cut(char *fname)\r
72{\r
73 FILE *tmp;\r
74 char *p;\r
75\r
76 p = fname + strlen(fname) - 1;\r
77 for (; p > fname; p--)\r
78 if (*p == '.') break;\r
79 *p = 0;\r
80\r
81 if((tmp = fopen(fname, "rb"))) {\r
82 fclose(tmp);\r
83 return 1;\r
84 }\r
85 return 0;\r
86}\r
87\r
88static void get_ext(const char *file, char *ext)\r
89{\r
90 const char *p;\r
91\r
92 p = file + strlen(file) - 4;\r
93 if (p < file) p = file;\r
94 strncpy(ext, p, 4);\r
95 ext[4] = 0;\r
96 strlwr_(ext);\r
97}\r
98\r
99static void fname_ext(char *dst, int dstlen, const char *prefix, const char *ext, const char *fname)\r
100{\r
101 int prefix_len = 0;\r
102 const char *p;\r
103\r
104 *dst = 0;\r
105 if (prefix) {\r
106 int len = plat_get_root_dir(dst, dstlen);\r
107 strcpy(dst + len, prefix);\r
108 prefix_len = len + strlen(prefix);\r
109 }\r
110\r
111 p = fname + strlen(fname) - 1;\r
112 for (; p >= fname && *p != PATH_SEP_C; p--)\r
113 ;\r
114 p++;\r
115 strncpy(dst + prefix_len, p, dstlen - prefix_len - 1);\r
116\r
117 dst[dstlen - 8] = 0;\r
118 if (dst[strlen(dst) - 4] == '.')\r
119 dst[strlen(dst) - 4] = 0;\r
120 if (ext)\r
121 strcat(dst, ext);\r
122}\r
123\r
124static void romfname_ext(char *dst, int dstlen, const char *prefix, const char *ext)\r
125{\r
126 fname_ext(dst, dstlen, prefix, ext, rom_fname_loaded);\r
127}\r
128\r
129void emu_status_msg(const char *format, ...)\r
130{\r
131 va_list vl;\r
132 int ret;\r
133\r
134 va_start(vl, format);\r
135 ret = vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);\r
136 va_end(vl);\r
137\r
138 /* be sure old text gets overwritten */\r
139 for (; ret < 28; ret++)\r
140 noticeMsg[ret] = ' ';\r
141 noticeMsg[ret] = 0;\r
142\r
143 notice_msg_time = plat_get_ticks_ms();\r
144}\r
145\r
146static const char * const biosfiles_us[] = { "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303" };\r
147static const char * const biosfiles_eu[] = { "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303" };\r
148static const char * const biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
149\r
150static int find_bios(int region, char **bios_file)\r
151{\r
152 int i, count;\r
153 const char * const *files;\r
154 FILE *f = NULL;\r
155\r
156 if (region == 4) { // US\r
157 files = biosfiles_us;\r
158 count = sizeof(biosfiles_us) / sizeof(char *);\r
159 } else if (region == 8) { // EU\r
160 files = biosfiles_eu;\r
161 count = sizeof(biosfiles_eu) / sizeof(char *);\r
162 } else if (region == 1 || region == 2) {\r
163 files = biosfiles_jp;\r
164 count = sizeof(biosfiles_jp) / sizeof(char *);\r
165 } else {\r
166 return 0;\r
167 }\r
168\r
169 for (i = 0; i < count; i++)\r
170 {\r
171 emu_make_path(static_buff, files[i], sizeof(static_buff) - 4);\r
172 strcat(static_buff, ".bin");\r
173 f = fopen(static_buff, "rb");\r
174 if (f) break;\r
175\r
176 static_buff[strlen(static_buff) - 4] = 0;\r
177 strcat(static_buff, ".zip");\r
178 f = fopen(static_buff, "rb");\r
179 if (f) break;\r
180 }\r
181\r
182 if (f) {\r
183 lprintf("using bios: %s\n", static_buff);\r
184 fclose(f);\r
185 if (bios_file)\r
186 *bios_file = static_buff;\r
187 return 1;\r
188 } else {\r
189 sprintf(static_buff, "no %s BIOS files found, read docs",\r
190 region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
191 menu_update_msg(static_buff);\r
192 return 0;\r
193 }\r
194}\r
195\r
196/* check if the name begins with BIOS name */\r
197/*\r
198static int emu_isBios(const char *name)\r
199{\r
200 int i;\r
201 for (i = 0; i < sizeof(biosfiles_us)/sizeof(biosfiles_us[0]); i++)\r
202 if (strstr(name, biosfiles_us[i]) != NULL) return 1;\r
203 for (i = 0; i < sizeof(biosfiles_eu)/sizeof(biosfiles_eu[0]); i++)\r
204 if (strstr(name, biosfiles_eu[i]) != NULL) return 1;\r
205 for (i = 0; i < sizeof(biosfiles_jp)/sizeof(biosfiles_jp[0]); i++)\r
206 if (strstr(name, biosfiles_jp[i]) != NULL) return 1;\r
207 return 0;\r
208}\r
209*/\r
210\r
211static unsigned char id_header[0x100];\r
212\r
213/* checks if fname points to valid MegaCD image */\r
214static int emu_cd_check(int *pregion, const char *fname_in)\r
215{\r
216 const char *fname = fname_in;\r
217 unsigned char buf[32];\r
218 pm_file *cd_f;\r
219 int region = 4; // 1: Japan, 4: US, 8: Europe\r
220 char ext[5];\r
221 cue_track_type type = CT_UNKNOWN;\r
222 cue_data_t *cue_data = NULL;\r
223\r
224 get_ext(fname_in, ext);\r
225 if (strcasecmp(ext, ".cue") == 0) {\r
226 cue_data = cue_parse(fname_in);\r
227 if (cue_data != NULL) {\r
228 fname = cue_data->tracks[1].fname;\r
229 type = cue_data->tracks[1].type;\r
230 }\r
231 else\r
232 return -1;\r
233 }\r
234\r
235 cd_f = pm_open(fname);\r
236 if (cue_data != NULL)\r
237 cue_destroy(cue_data);\r
238\r
239 if (cd_f == NULL) return 0; // let the upper level handle this\r
240\r
241 if (pm_read(buf, 32, cd_f) != 32) {\r
242 pm_close(cd_f);\r
243 return -1;\r
244 }\r
245\r
246 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) {\r
247 if (type && type != CT_ISO)\r
248 elprintf(EL_STATUS, ".cue has wrong type: %i", type);\r
249 type = CT_ISO; // Sega CD (ISO)\r
250 }\r
251 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) {\r
252 if (type && type != CT_BIN)\r
253 elprintf(EL_STATUS, ".cue has wrong type: %i", type);\r
254 type = CT_BIN; // Sega CD (BIN)\r
255 }\r
256\r
257 if (type == CT_UNKNOWN) {\r
258 pm_close(cd_f);\r
259 return 0;\r
260 }\r
261\r
262 pm_seek(cd_f, (type == CT_ISO) ? 0x100 : 0x110, SEEK_SET);\r
263 pm_read(id_header, sizeof(id_header), cd_f);\r
264\r
265 /* it seems we have a CD image here. Try to detect region now.. */\r
266 pm_seek(cd_f, (type == CT_ISO) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
267 pm_read(buf, 1, cd_f);\r
268 pm_close(cd_f);\r
269\r
270 if (buf[0] == 0x64) region = 8; // EU\r
271 if (buf[0] == 0xa1) region = 1; // JAP\r
272\r
273 lprintf("detected %s Sega/Mega CD image with %s region\n",\r
274 type == CT_BIN ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
275\r
276 if (pregion != NULL) *pregion = region;\r
277\r
278 return type;\r
279}\r
280\r
281static int detect_media(const char *fname)\r
282{\r
283 static const short sms_offsets[] = { 0x7ff0, 0x3ff0, 0x1ff0 };\r
284 static const char *sms_exts[] = { "sms", "gg", "sg" };\r
285 static const char *md_exts[] = { "gen", "bin", "smd" };\r
286 char buff0[32], buff[32];\r
287 unsigned short *d16;\r
288 pm_file *pmf;\r
289 char ext[5];\r
290 int i;\r
291\r
292 get_ext(fname, ext);\r
293\r
294 // detect wrong extensions\r
295 if (!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) // s.gz ~ .mds.gz\r
296 return PM_BAD;\r
297\r
298 /* don't believe in extensions, except .cue */\r
299 if (strcasecmp(ext, ".cue") == 0)\r
300 return PM_CD;\r
301\r
302 pmf = pm_open(fname);\r
303 if (pmf == NULL)\r
304 return PM_BAD;\r
305\r
306 if (pm_read(buff0, 32, pmf) != 32) {\r
307 pm_close(pmf);\r
308 return PM_BAD;\r
309 }\r
310\r
311 if (strncasecmp("SEGADISCSYSTEM", buff0 + 0x00, 14) == 0 ||\r
312 strncasecmp("SEGADISCSYSTEM", buff0 + 0x10, 14) == 0) {\r
313 pm_close(pmf);\r
314 return PM_CD;\r
315 }\r
316\r
317 /* check for SMD evil */\r
318 if (pmf->size >= 0x4200 && (pmf->size & 0x3fff) == 0x200) {\r
319 if (pm_seek(pmf, sms_offsets[0] + 0x200, SEEK_SET) == sms_offsets[0] + 0x200 &&\r
320 pm_read(buff, 16, pmf) == 16 &&\r
321 strncmp("TMR SEGA", buff, 8) == 0)\r
322 goto looks_like_sms;\r
323\r
324 /* could parse further but don't bother */\r
325 goto extension_check;\r
326 }\r
327\r
328 /* MD header? Act as TMSS BIOS here */\r
329 if (pm_seek(pmf, 0x100, SEEK_SET) == 0x100 && pm_read(buff, 16, pmf) == 16) {\r
330 if (strncmp(buff, "SEGA", 4) == 0 || strncmp(buff, " SEG", 4) == 0)\r
331 goto looks_like_md;\r
332 }\r
333\r
334 for (i = 0; i < array_size(sms_offsets); i++) {\r
335 if (pm_seek(pmf, sms_offsets[i], SEEK_SET) != sms_offsets[i])\r
336 continue;\r
337\r
338 if (pm_read(buff, 16, pmf) != 16)\r
339 continue;\r
340\r
341 if (strncmp("TMR SEGA", buff, 8) == 0)\r
342 goto looks_like_sms;\r
343 }\r
344\r
345extension_check:\r
346 /* probably some headerless thing. Maybe check the extension after all. */\r
347 for (i = 0; i < array_size(md_exts); i++)\r
348 if (strcasecmp(pmf->ext, md_exts[i]) == 0)\r
349 goto looks_like_md;\r
350\r
351 for (i = 0; i < array_size(sms_exts); i++)\r
352 if (strcasecmp(pmf->ext, sms_exts[i]) == 0)\r
353 goto looks_like_sms;\r
354\r
355 /* If everything else fails, make a guess on the reset vector */\r
356 d16 = (unsigned short *)(buff0 + 4);\r
357 if ((((d16[0] << 16) | d16[1]) & 0xffffff) >= pmf->size) {\r
358 lprintf("bad MD reset vector, assuming SMS\n");\r
359 goto looks_like_sms;\r
360 }\r
361\r
362looks_like_md:\r
363 pm_close(pmf);\r
364 return PM_MD_CART;\r
365\r
366looks_like_sms:\r
367 pm_close(pmf);\r
368 return PM_MARK3;\r
369}\r
370\r
371static int extract_text(char *dest, const unsigned char *src, int len, int swab)\r
372{\r
373 char *p = dest;\r
374 int i;\r
375\r
376 if (swab) swab = 1;\r
377\r
378 for (i = len - 1; i >= 0; i--)\r
379 {\r
380 if (src[i^swab] != ' ') break;\r
381 }\r
382 len = i + 1;\r
383\r
384 for (i = 0; i < len; i++)\r
385 {\r
386 unsigned char s = src[i^swab];\r
387 if (s >= 0x20 && s < 0x7f && s != '#' && s != '|' &&\r
388 s != '[' && s != ']' && s != '\\')\r
389 {\r
390 *p++ = s;\r
391 }\r
392 else\r
393 {\r
394 sprintf(p, "\\%02x", s);\r
395 p += 3;\r
396 }\r
397 }\r
398\r
399 return p - dest;\r
400}\r
401\r
402static char *emu_make_rom_id(const char *fname)\r
403{\r
404 static char id_string[3+0xe*3+0x3*3+0x30*3+3];\r
405 int pos, swab = 1;\r
406\r
407 if (PicoAHW & PAHW_MCD) {\r
408 strcpy(id_string, "CD|");\r
409 swab = 0;\r
410 }\r
411 else if (PicoAHW & PAHW_SMS)\r
412 strcpy(id_string, "MS|");\r
413 else strcpy(id_string, "MD|");\r
414 pos = 3;\r
415\r
416 if (!(PicoAHW & PAHW_SMS)) {\r
417 pos += extract_text(id_string + pos, id_header + 0x80, 0x0e, swab); // serial\r
418 id_string[pos] = '|'; pos++;\r
419 pos += extract_text(id_string + pos, id_header + 0xf0, 0x03, swab); // region\r
420 id_string[pos] = '|'; pos++;\r
421 pos += extract_text(id_string + pos, id_header + 0x50, 0x30, swab); // overseas name\r
422 id_string[pos] = 0;\r
423 if (pos > 5)\r
424 return id_string;\r
425 pos = 3;\r
426 }\r
427\r
428 // can't find name in ROM, use filename\r
429 fname_ext(id_string + 3, sizeof(id_string) - 3, NULL, NULL, fname);\r
430\r
431 return id_string;\r
432}\r
433\r
434// buffer must be at least 150 byte long\r
435void emu_get_game_name(char *str150)\r
436{\r
437 int ret, swab = (PicoAHW & PAHW_MCD) ? 0 : 1;\r
438 char *s, *d;\r
439\r
440 ret = extract_text(str150, id_header + 0x50, 0x30, swab); // overseas name\r
441\r
442 for (s = d = str150 + 1; s < str150+ret; s++)\r
443 {\r
444 if (*s == 0) break;\r
445 if (*s != ' ' || d[-1] != ' ')\r
446 *d++ = *s;\r
447 }\r
448 *d = 0;\r
449}\r
450\r
451static void shutdown_MCD(void)\r
452{\r
453 if ((PicoAHW & PAHW_MCD) && Pico_mcd != NULL)\r
454 Stop_CD();\r
455 PicoAHW &= ~PAHW_MCD;\r
456}\r
457\r
458static void system_announce(void)\r
459{\r
460 const char *sys_name, *tv_standard, *extra = "";\r
461 int fps;\r
462\r
463 if (PicoAHW & PAHW_SMS) {\r
464 sys_name = "Master System";\r
465#ifdef NO_SMS\r
466 extra = " [no support]";\r
467#endif\r
468 } else if (PicoAHW & PAHW_PICO) {\r
469 sys_name = "Pico";\r
470 } else if (PicoAHW & PAHW_MCD) {\r
471 sys_name = "Mega CD";\r
472 if ((Pico.m.hardware & 0xc0) == 0x80)\r
473 sys_name = "Sega CD";\r
474 } else if (PicoAHW & PAHW_32X) {\r
475 sys_name = "32X";\r
476 } else {\r
477 sys_name = "MegaDrive";\r
478 if ((Pico.m.hardware & 0xc0) == 0x80)\r
479 sys_name = "Genesis";\r
480 }\r
481 tv_standard = Pico.m.pal ? "PAL" : "NTSC";\r
482 fps = Pico.m.pal ? 50 : 60;\r
483\r
484 emu_status_msg("%s %s / %dFPS%s", tv_standard, sys_name, fps, extra);\r
485}\r
486\r
487// note: this function might mangle rom_fname\r
488// XXX: portions of this code should move to pico/\r
489int emu_reload_rom(char *rom_fname)\r
490{\r
491 unsigned int rom_size = 0;\r
492 char *used_rom_name = rom_fname;\r
493 unsigned char *rom_data = NULL;\r
494 char ext[5];\r
495 pm_file *rom = NULL;\r
496 int cd_state = CIT_NOT_CD;\r
497 int ret, media_type, cd_region;\r
498 int cfg_loaded = 0, bad_rom = 0;\r
499\r
500 lprintf("emu_ReloadRom(%s)\n", rom_fname);\r
501\r
502 get_ext(rom_fname, ext);\r
503\r
504 // early cleanup\r
505 PicoPatchUnload();\r
506 if (movie_data) {\r
507 free(movie_data);\r
508 movie_data = 0;\r
509 }\r
510\r
511 if (!strcmp(ext, ".gmv"))\r
512 {\r
513 // check for both gmv and rom\r
514 int dummy;\r
515 FILE *movie_file = fopen(rom_fname, "rb");\r
516 if (!movie_file) {\r
517 menu_update_msg("Failed to open movie.");\r
518 return 0;\r
519 }\r
520 fseek(movie_file, 0, SEEK_END);\r
521 movie_size = ftell(movie_file);\r
522 fseek(movie_file, 0, SEEK_SET);\r
523 if (movie_size < 64+3) {\r
524 menu_update_msg("Invalid GMV file.");\r
525 fclose(movie_file);\r
526 return 0;\r
527 }\r
528 movie_data = malloc(movie_size);\r
529 if (movie_data == NULL) {\r
530 menu_update_msg("low memory.");\r
531 fclose(movie_file);\r
532 return 0;\r
533 }\r
534 dummy = fread(movie_data, 1, movie_size, movie_file);\r
535 fclose(movie_file);\r
536 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
537 menu_update_msg("Invalid GMV file.");\r
538 return 0;\r
539 }\r
540 dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
541 if (!dummy) {\r
542 menu_update_msg("Could't find a ROM for movie.");\r
543 return 0;\r
544 }\r
545 get_ext(rom_fname, ext);\r
546 lprintf("gmv loaded for %s\n", rom_fname);\r
547 }\r
548 else if (!strcmp(ext, ".pat"))\r
549 {\r
550 int dummy;\r
551 PicoPatchLoad(rom_fname);\r
552 dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
553 if (!dummy) {\r
554 menu_update_msg("Could't find a ROM to patch.");\r
555 return 0;\r
556 }\r
557 get_ext(rom_fname, ext);\r
558 }\r
559\r
560 media_type = detect_media(rom_fname);\r
561 if (media_type == PM_BAD) {\r
562 menu_update_msg("Not a ROM/CD img selected.");\r
563 return 0;\r
564 }\r
565\r
566 shutdown_MCD();\r
567 PicoCartUnload();\r
568 rom_loaded = 0;\r
569\r
570 PicoAHW = 0;\r
571\r
572 if (media_type == PM_CD)\r
573 {\r
574 // check for MegaCD image\r
575 cd_state = emu_cd_check(&cd_region, rom_fname);\r
576 if (cd_state >= 0 && cd_state != CIT_NOT_CD)\r
577 {\r
578 // valid CD image, check for BIOS..\r
579\r
580 // we need to have config loaded at this point\r
581 ret = emu_read_config(rom_fname, 0);\r
582 if (!ret) emu_read_config(NULL, 0);\r
583 cfg_loaded = 1;\r
584\r
585 if (PicoRegionOverride) {\r
586 cd_region = PicoRegionOverride;\r
587 lprintf("override region to %s\n", cd_region != 4 ?\r
588 (cd_region == 8 ? "EU" : "JAP") : "USA");\r
589 }\r
590 if (!find_bios(cd_region, &used_rom_name))\r
591 return 0;\r
592\r
593 get_ext(used_rom_name, ext);\r
594 PicoAHW |= PAHW_MCD;\r
595 }\r
596 else {\r
597 menu_update_msg("Invalid CD image");\r
598 return 0;\r
599 }\r
600 }\r
601 else if (media_type == PM_MARK3) {\r
602 lprintf("detected SMS ROM\n");\r
603 PicoAHW = PAHW_SMS;\r
604 }\r
605\r
606 rom = pm_open(used_rom_name);\r
607 if (rom == NULL) {\r
608 menu_update_msg("Failed to open ROM");\r
609 return 0;\r
610 }\r
611\r
612 menu_romload_prepare(used_rom_name); // also CD load\r
613 used_rom_name = NULL; // uses static_buff\r
614\r
615 ret = PicoCartLoad(rom, &rom_data, &rom_size, (PicoAHW & PAHW_SMS) ? 1 : 0);\r
616 pm_close(rom);\r
617 if (ret != 0) {\r
618 if (ret == 2) menu_update_msg("Out of memory");\r
619 else if (ret == 3) menu_update_msg("Read failed");\r
620 else menu_update_msg("PicoCartLoad() failed.");\r
621 goto fail;\r
622 }\r
623\r
624 // detect wrong files\r
625 if (strncmp((char *)rom_data, "Pico", 4) == 0)\r
626 bad_rom = 1;\r
627 else if (!(PicoAHW & PAHW_SMS)) {\r
628 unsigned short *d = (unsigned short *)(rom_data + 4);\r
629 if ((((d[0] << 16) | d[1]) & 0xffffff) >= (int)rom_size) {\r
630 lprintf("bad reset vector\n");\r
631 bad_rom = 1;\r
632 }\r
633 }\r
634\r
635 if (bad_rom) {\r
636 menu_update_msg("Bad ROM detected.");\r
637 goto fail;\r
638 }\r
639\r
640 // load config for this ROM (do this before insert to get correct region)\r
641 if (!(PicoAHW & PAHW_MCD))\r
642 memcpy(id_header, rom_data + 0x100, sizeof(id_header));\r
643 if (!cfg_loaded) {\r
644 ret = emu_read_config(rom_fname, 0);\r
645 if (!ret) emu_read_config(NULL, 0);\r
646 }\r
647\r
648 emu_make_path(static_buff, "carthw.cfg", sizeof(static_buff));\r
649 if (PicoCartInsert(rom_data, rom_size, static_buff)) {\r
650 menu_update_msg("Failed to load ROM.");\r
651 goto fail;\r
652 }\r
653\r
654 // insert CD if it was detected\r
655 if (cd_state != CIT_NOT_CD) {\r
656 ret = Insert_CD(rom_fname, cd_state);\r
657 if (ret != 0) {\r
658 PicoCartUnload();\r
659 rom_data = NULL; // freed by unload\r
660 menu_update_msg("Insert_CD() failed, invalid CD image?");\r
661 goto fail;\r
662 }\r
663 }\r
664\r
665 menu_romload_end();\r
666\r
667 if (PicoPatches) {\r
668 PicoPatchPrepare();\r
669 PicoPatchApply();\r
670 }\r
671\r
672 // additional movie stuff\r
673 if (movie_data)\r
674 {\r
675 if (movie_data[0x14] == '6')\r
676 PicoOpt |= POPT_6BTN_PAD; // 6 button pad\r
677 else PicoOpt &= ~POPT_6BTN_PAD;\r
678 PicoOpt |= POPT_DIS_VDP_FIFO; // no VDP fifo timing\r
679 if (movie_data[0xF] >= 'A') {\r
680 if (movie_data[0x16] & 0x80) {\r
681 PicoRegionOverride = 8;\r
682 } else {\r
683 PicoRegionOverride = 4;\r
684 }\r
685 PicoReset();\r
686 // TODO: bits 6 & 5\r
687 }\r
688 movie_data[0x18+30] = 0;\r
689 emu_status_msg("MOVIE: %s", (char *) &movie_data[0x18]);\r
690 }\r
691 else\r
692 {\r
693 system_announce();\r
694 PicoOpt &= ~POPT_DIS_VDP_FIFO;\r
695 }\r
696\r
697 strncpy(rom_fname_loaded, rom_fname, sizeof(rom_fname_loaded)-1);\r
698 rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;\r
699 rom_loaded = 1;\r
700\r
701 // load SRAM for this ROM\r
702 if (currentConfig.EmuOpt & EOPT_EN_SRAM)\r
703 emu_save_load_game(1, 1);\r
704\r
705 return 1;\r
706\r
707fail:\r
708 if (rom_data)\r
709 free(rom_data);\r
710 menu_romload_end();\r
711 return 0;\r
712}\r
713\r
714int emu_swap_cd(const char *fname)\r
715{\r
716 cd_img_type cd_type;\r
717 int ret = -1;\r
718\r
719 cd_type = emu_cd_check(NULL, fname);\r
720 if (cd_type != CIT_NOT_CD)\r
721 ret = Insert_CD(fname, cd_type);\r
722 if (ret != 0) {\r
723 menu_update_msg("Load failed, invalid CD image?");\r
724 return 0;\r
725 }\r
726\r
727 strncpy(rom_fname_loaded, fname, sizeof(rom_fname_loaded)-1);\r
728 rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;\r
729 return 1;\r
730}\r
731\r
732// <base dir><end>\r
733void emu_make_path(char *buff, const char *end, int size)\r
734{\r
735 int pos, end_len;\r
736\r
737 end_len = strlen(end);\r
738 pos = plat_get_root_dir(buff, size);\r
739 strncpy(buff + pos, end, size - pos);\r
740 buff[size - 1] = 0;\r
741 if (pos + end_len > size - 1)\r
742 lprintf("Warning: path truncated: %s\n", buff);\r
743}\r
744\r
745static void make_config_cfg(char *cfg_buff_512)\r
746{\r
747 emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);\r
748 if (config_slot != 0)\r
749 {\r
750 char *p = strrchr(cfg_buff_512, '.');\r
751 if (p == NULL)\r
752 p = cfg_buff_512 + strlen(cfg_buff_512);\r
753 sprintf(p, ".%i.cfg", config_slot);\r
754 }\r
755 cfg_buff_512[511] = 0;\r
756}\r
757\r
758void emu_prep_defconfig(void)\r
759{\r
760 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
761 defaultConfig.EmuOpt = 0x9d | EOPT_RAM_TIMINGS|EOPT_EN_CD_LEDS;\r
762 defaultConfig.s_PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |\r
763 POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES |\r
764 POPT_EN_32X|POPT_EN_PWM;\r
765 defaultConfig.s_PsndRate = 44100;\r
766 defaultConfig.s_PicoRegion = 0; // auto\r
767 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
768 defaultConfig.s_PicoCDBuffers = 0;\r
769 defaultConfig.confirm_save = EOPT_CONFIRM_SAVE;\r
770 defaultConfig.Frameskip = -1; // auto\r
771 defaultConfig.volume = 50;\r
772 defaultConfig.gamma = 100;\r
773 defaultConfig.scaling = 0;\r
774 defaultConfig.turbo_rate = 15;\r
775\r
776 // platform specific overrides\r
777 pemu_prep_defconfig();\r
778}\r
779\r
780void emu_set_defconfig(void)\r
781{\r
782 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
783 PicoOpt = currentConfig.s_PicoOpt;\r
784 PsndRate = currentConfig.s_PsndRate;\r
785 PicoRegionOverride = currentConfig.s_PicoRegion;\r
786 PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
787 PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
788 p32x_msh2_multiplier = MSH2_MULTI_DEFAULT;\r
789 p32x_ssh2_multiplier = SSH2_MULTI_DEFAULT;\r
790}\r
791\r
792int emu_read_config(const char *rom_fname, int no_defaults)\r
793{\r
794 char cfg[512];\r
795 int ret;\r
796\r
797 if (!no_defaults)\r
798 emu_set_defconfig();\r
799\r
800 if (rom_fname == NULL)\r
801 {\r
802 // global config\r
803 make_config_cfg(cfg);\r
804 ret = config_readsect(cfg, NULL);\r
805 }\r
806 else\r
807 {\r
808 char *sect = emu_make_rom_id(rom_fname);\r
809\r
810 if (config_slot != 0)\r
811 sprintf(cfg, "game.%i.cfg", config_slot);\r
812 else strcpy(cfg, "game.cfg");\r
813\r
814 ret = -1;\r
815 if (config_havesect(cfg, sect))\r
816 {\r
817 // read user's config\r
818 int vol = currentConfig.volume;\r
819 emu_set_defconfig();\r
820 ret = config_readsect(cfg, sect);\r
821 currentConfig.volume = vol; // make vol global (bah)\r
822 }\r
823 else\r
824 {\r
825 // read global config, and apply game_def.cfg on top\r
826 make_config_cfg(cfg);\r
827 config_readsect(cfg, NULL);\r
828 emu_make_path(cfg, "game_def.cfg", sizeof(cfg));\r
829 ret = config_readsect(cfg, sect);\r
830 }\r
831\r
832 if (ret == 0)\r
833 {\r
834 lprintf("loaded cfg from sect \"%s\"\n", sect);\r
835 }\r
836 }\r
837\r
838 pemu_validate_config();\r
839\r
840 // some sanity checks\r
841#ifdef PSP\r
842 /* TODO: mv to plat_validate_config() */\r
843 if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
844 if (currentConfig.gamma < -4 || currentConfig.gamma > 16) currentConfig.gamma = 0;\r
845 if (currentConfig.gamma2 < 0 || currentConfig.gamma2 > 2) currentConfig.gamma2 = 0;\r
846#endif\r
847 if (currentConfig.volume < 0 || currentConfig.volume > 99)\r
848 currentConfig.volume = 50;\r
849\r
850 if (ret == 0)\r
851 config_slot_current = config_slot;\r
852\r
853 return (ret == 0);\r
854}\r
855\r
856\r
857int emu_write_config(int is_game)\r
858{\r
859 char cfg[512], *game_sect = NULL;\r
860 int ret, write_lrom = 0;\r
861\r
862 if (!is_game)\r
863 {\r
864 make_config_cfg(cfg);\r
865 write_lrom = 1;\r
866 } else {\r
867 if (config_slot != 0)\r
868 sprintf(cfg, "game.%i.cfg", config_slot);\r
869 else strcpy(cfg, "game.cfg");\r
870 game_sect = emu_make_rom_id(rom_fname_loaded);\r
871 lprintf("emu_write_config: sect \"%s\"\n", game_sect);\r
872 }\r
873\r
874 lprintf("emu_write_config: %s ", cfg);\r
875 ret = config_writesect(cfg, game_sect);\r
876 if (write_lrom) config_writelrom(cfg);\r
877#ifndef NO_SYNC\r
878 sync();\r
879#endif\r
880 lprintf((ret == 0) ? "(ok)\n" : "(failed)\n");\r
881\r
882 if (ret == 0) config_slot_current = config_slot;\r
883 return ret == 0;\r
884}\r
885\r
886\r
887/* always using built-in font */\r
888\r
889#define mk_text_out(name, type, val, topleft, step_x, step_y) \\r
890void name(int x, int y, const char *text) \\r
891{ \\r
892 int i, l, len = strlen(text); \\r
893 type *screen = (type *)(topleft) + x * step_x + y * step_y; \\r
894 \\r
895 for (i = 0; i < len; i++, screen += 8 * step_x) \\r
896 { \\r
897 for (l = 0; l < 8; l++) \\r
898 { \\r
899 unsigned char fd = fontdata8x8[text[i] * 8 + l];\\r
900 type *s = screen + l * step_y; \\r
901 if (fd&0x80) s[step_x * 0] = val; \\r
902 if (fd&0x40) s[step_x * 1] = val; \\r
903 if (fd&0x20) s[step_x * 2] = val; \\r
904 if (fd&0x10) s[step_x * 3] = val; \\r
905 if (fd&0x08) s[step_x * 4] = val; \\r
906 if (fd&0x04) s[step_x * 5] = val; \\r
907 if (fd&0x02) s[step_x * 6] = val; \\r
908 if (fd&0x01) s[step_x * 7] = val; \\r
909 } \\r
910 } \\r
911}\r
912\r
913mk_text_out(emu_text_out8, unsigned char, 0xf0, g_screen_ptr, 1, g_screen_width)\r
914mk_text_out(emu_text_out16, unsigned short, 0xffff, g_screen_ptr, 1, g_screen_width)\r
915mk_text_out(emu_text_out8_rot, unsigned char, 0xf0,\r
916 (char *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)\r
917mk_text_out(emu_text_out16_rot, unsigned short, 0xffff,\r
918 (short *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)\r
919\r
920#undef mk_text_out\r
921\r
922\r
923void update_movie(void)\r
924{\r
925 int offs = Pico.m.frame_count*3 + 0x40;\r
926 if (offs+3 > movie_size) {\r
927 free(movie_data);\r
928 movie_data = 0;\r
929 emu_status_msg("END OF MOVIE.");\r
930 lprintf("END OF MOVIE.\n");\r
931 } else {\r
932 // MXYZ SACB RLDU\r
933 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU\r
934 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // C\r
935 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // A\r
936 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // B\r
937 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
938 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // C\r
939 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // A\r
940 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // B\r
941 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
942 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
943 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
944 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
945 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
946 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
947 }\r
948}\r
949\r
950static int try_ropen_file(const char *fname)\r
951{\r
952 FILE *f;\r
953\r
954 f = fopen(fname, "rb");\r
955 if (f) {\r
956 fclose(f);\r
957 return 1;\r
958 }\r
959 return 0;\r
960}\r
961\r
962char *emu_get_save_fname(int load, int is_sram, int slot)\r
963{\r
964 char *saveFname = static_buff;\r
965 char ext[16];\r
966\r
967 if (is_sram)\r
968 {\r
969 strcpy(ext, (PicoAHW & PAHW_MCD) ? ".brm" : ".srm");\r
970 romfname_ext(saveFname, sizeof(static_buff),\r
971 (PicoAHW & PAHW_MCD) ? "brm"PATH_SEP : "srm"PATH_SEP, ext);\r
972 if (!load)\r
973 return saveFname;\r
974\r
975 if (try_ropen_file(saveFname))\r
976 return saveFname;\r
977\r
978 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
979 if (try_ropen_file(saveFname))\r
980 return saveFname;\r
981 }\r
982 else\r
983 {\r
984 const char *ext_main = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds.gz" : ".mds";\r
985 const char *ext_othr = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds" : ".mds.gz";\r
986 ext[0] = 0;\r
987 if (slot > 0 && slot < 10)\r
988 sprintf(ext, ".%i", slot);\r
989 strcat(ext, ext_main);\r
990\r
991 if (!load) {\r
992 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
993 return saveFname;\r
994 }\r
995 else {\r
996 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
997 if (try_ropen_file(saveFname))\r
998 return saveFname;\r
999\r
1000 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
1001 if (try_ropen_file(saveFname))\r
1002 return saveFname;\r
1003\r
1004 // try the other ext\r
1005 ext[0] = 0;\r
1006 if (slot > 0 && slot < 10)\r
1007 sprintf(ext, ".%i", slot);\r
1008 strcat(ext, ext_othr);\r
1009\r
1010 romfname_ext(saveFname, sizeof(static_buff), "mds"PATH_SEP, ext);\r
1011 if (try_ropen_file(saveFname))\r
1012 return saveFname;\r
1013 }\r
1014 }\r
1015\r
1016 return NULL;\r
1017}\r
1018\r
1019int emu_check_save_file(int slot, int *time)\r
1020{\r
1021 return emu_get_save_fname(1, 0, slot) ? 1 : 0;\r
1022}\r
1023\r
1024int emu_save_load_game(int load, int sram)\r
1025{\r
1026 int ret = 0;\r
1027 char *saveFname;\r
1028\r
1029 // make save filename\r
1030 saveFname = emu_get_save_fname(load, sram, state_slot);\r
1031 if (saveFname == NULL) {\r
1032 if (!sram)\r
1033 emu_status_msg(load ? "LOAD FAILED (missing file)" : "SAVE FAILED");\r
1034 return -1;\r
1035 }\r
1036\r
1037 lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1038\r
1039 if (sram)\r
1040 {\r
1041 FILE *sramFile;\r
1042 int sram_size;\r
1043 unsigned char *sram_data;\r
1044 int truncate = 1;\r
1045 if (PicoAHW & PAHW_MCD)\r
1046 {\r
1047 if (PicoOpt & POPT_EN_MCD_RAMCART) {\r
1048 sram_size = 0x12000;\r
1049 sram_data = SRam.data;\r
1050 if (sram_data)\r
1051 memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);\r
1052 } else {\r
1053 sram_size = 0x2000;\r
1054 sram_data = Pico_mcd->bram;\r
1055 truncate = 0; // the .brm may contain RAM cart data after normal brm\r
1056 }\r
1057 } else {\r
1058 sram_size = SRam.size;\r
1059 sram_data = SRam.data;\r
1060 }\r
1061 if (sram_data == NULL)\r
1062 return 0; // SRam forcefully disabled for this game\r
1063\r
1064 if (load)\r
1065 {\r
1066 sramFile = fopen(saveFname, "rb");\r
1067 if (!sramFile)\r
1068 return -1;\r
1069 ret = fread(sram_data, 1, sram_size, sramFile);\r
1070 ret = ret > 0 ? 0 : -1;\r
1071 fclose(sramFile);\r
1072 if ((PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_RAMCART))\r
1073 memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);\r
1074 } else {\r
1075 // sram save needs some special processing\r
1076 // see if we have anything to save\r
1077 for (; sram_size > 0; sram_size--)\r
1078 if (sram_data[sram_size-1]) break;\r
1079\r
1080 if (sram_size) {\r
1081 sramFile = fopen(saveFname, truncate ? "wb" : "r+b");\r
1082 if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry\r
1083 if (!sramFile) return -1;\r
1084 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
1085 ret = (ret != sram_size) ? -1 : 0;\r
1086 fclose(sramFile);\r
1087#ifndef NO_SYNC\r
1088 sync();\r
1089#endif\r
1090 }\r
1091 }\r
1092 return ret;\r
1093 }\r
1094 else\r
1095 {\r
1096 ret = PicoState(saveFname, !load);\r
1097 if (!ret) {\r
1098#ifndef NO_SYNC\r
1099 if (!load) sync();\r
1100#endif\r
1101 emu_status_msg(load ? "STATE LOADED" : "STATE SAVED");\r
1102 } else {\r
1103 emu_status_msg(load ? "LOAD FAILED" : "SAVE FAILED");\r
1104 ret = -1;\r
1105 }\r
1106\r
1107 return ret;\r
1108 }\r
1109}\r
1110\r
1111void emu_set_fastforward(int set_on)\r
1112{\r
1113 static void *set_PsndOut = NULL;\r
1114 static int set_Frameskip, set_EmuOpt, is_on = 0;\r
1115\r
1116 if (set_on && !is_on) {\r
1117 set_PsndOut = PsndOut;\r
1118 set_Frameskip = currentConfig.Frameskip;\r
1119 set_EmuOpt = currentConfig.EmuOpt;\r
1120 PsndOut = NULL;\r
1121 currentConfig.Frameskip = 8;\r
1122 currentConfig.EmuOpt &= ~4;\r
1123 currentConfig.EmuOpt |= 0x40000;\r
1124 is_on = 1;\r
1125 emu_status_msg("FAST FORWARD");\r
1126 }\r
1127 else if (!set_on && is_on) {\r
1128 PsndOut = set_PsndOut;\r
1129 currentConfig.Frameskip = set_Frameskip;\r
1130 currentConfig.EmuOpt = set_EmuOpt;\r
1131 PsndRerate(1);\r
1132 is_on = 0;\r
1133 }\r
1134}\r
1135\r
1136static void emu_tray_open(void)\r
1137{\r
1138 engineState = PGS_TrayMenu;\r
1139}\r
1140\r
1141static void emu_tray_close(void)\r
1142{\r
1143 emu_status_msg("CD tray closed.");\r
1144}\r
1145\r
1146void emu_32x_startup(void)\r
1147{\r
1148 plat_video_toggle_renderer(0, 0); // HACK\r
1149 system_announce();\r
1150\r
1151 // force mode change event\r
1152 rendstatus_old = -1;\r
1153}\r
1154\r
1155void emu_reset_game(void)\r
1156{\r
1157 PicoReset();\r
1158 reset_timing = 1;\r
1159}\r
1160\r
1161void run_events_pico(unsigned int events)\r
1162{\r
1163 int lim_x;\r
1164\r
1165 if (events & PEV_PICO_SWINP) {\r
1166 pico_inp_mode++;\r
1167 if (pico_inp_mode > 2)\r
1168 pico_inp_mode = 0;\r
1169 switch (pico_inp_mode) {\r
1170 case 2: emu_status_msg("Input: Pen on Pad"); break;\r
1171 case 1: emu_status_msg("Input: Pen on Storyware"); break;\r
1172 case 0: emu_status_msg("Input: Joystick");\r
1173 PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
1174 break;\r
1175 }\r
1176 }\r
1177 if (events & PEV_PICO_PPREV) {\r
1178 PicoPicohw.page--;\r
1179 if (PicoPicohw.page < 0)\r
1180 PicoPicohw.page = 0;\r
1181 emu_status_msg("Page %i", PicoPicohw.page);\r
1182 }\r
1183 if (events & PEV_PICO_PNEXT) {\r
1184 PicoPicohw.page++;\r
1185 if (PicoPicohw.page > 6)\r
1186 PicoPicohw.page = 6;\r
1187 emu_status_msg("Page %i", PicoPicohw.page);\r
1188 }\r
1189\r
1190 if (pico_inp_mode == 0)\r
1191 return;\r
1192\r
1193 /* handle other input modes */\r
1194 if (PicoPad[0] & 1) pico_pen_y--;\r
1195 if (PicoPad[0] & 2) pico_pen_y++;\r
1196 if (PicoPad[0] & 4) pico_pen_x--;\r
1197 if (PicoPad[0] & 8) pico_pen_x++;\r
1198 PicoPad[0] &= ~0x0f; // release UDLR\r
1199\r
1200 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
1201 if (pico_pen_y < 8)\r
1202 pico_pen_y = 8;\r
1203 if (pico_pen_y > 224 - PICO_PEN_ADJUST_Y)\r
1204 pico_pen_y = 224 - PICO_PEN_ADJUST_Y;\r
1205 if (pico_pen_x < 0)\r
1206 pico_pen_x = 0;\r
1207 if (pico_pen_x > lim_x - PICO_PEN_ADJUST_X)\r
1208 pico_pen_x = lim_x - PICO_PEN_ADJUST_X;\r
1209\r
1210 PicoPicohw.pen_pos[0] = pico_pen_x;\r
1211 if (!(Pico.video.reg[12] & 1))\r
1212 PicoPicohw.pen_pos[0] += pico_pen_x / 4;\r
1213 PicoPicohw.pen_pos[0] += 0x3c;\r
1214 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
1215}\r
1216\r
1217static void do_turbo(int *pad, int acts)\r
1218{\r
1219 static int turbo_pad = 0;\r
1220 static unsigned char turbo_cnt[3] = { 0, 0, 0 };\r
1221 int inc = currentConfig.turbo_rate * 2;\r
1222\r
1223 if (acts & 0x1000) {\r
1224 turbo_cnt[0] += inc;\r
1225 if (turbo_cnt[0] >= 60)\r
1226 turbo_pad ^= 0x10, turbo_cnt[0] = 0;\r
1227 }\r
1228 if (acts & 0x2000) {\r
1229 turbo_cnt[1] += inc;\r
1230 if (turbo_cnt[1] >= 60)\r
1231 turbo_pad ^= 0x20, turbo_cnt[1] = 0;\r
1232 }\r
1233 if (acts & 0x4000) {\r
1234 turbo_cnt[2] += inc;\r
1235 if (turbo_cnt[2] >= 60)\r
1236 turbo_pad ^= 0x40, turbo_cnt[2] = 0;\r
1237 }\r
1238 *pad |= turbo_pad & (acts >> 8);\r
1239}\r
1240\r
1241static void run_events_ui(unsigned int which)\r
1242{\r
1243 if (which & (PEV_STATE_LOAD|PEV_STATE_SAVE))\r
1244 {\r
1245 int do_it = 1;\r
1246 if ( emu_check_save_file(state_slot, NULL) &&\r
1247 (((which & PEV_STATE_LOAD) && (currentConfig.confirm_save & EOPT_CONFIRM_LOAD)) ||\r
1248 ((which & PEV_STATE_SAVE) && (currentConfig.confirm_save & EOPT_CONFIRM_SAVE))) )\r
1249 {\r
1250 const char *nm;\r
1251 char tmp[64];\r
1252 int keys, len;\r
1253\r
1254 strcpy(tmp, (which & PEV_STATE_LOAD) ? "LOAD STATE?" : "OVERWRITE SAVE?");\r
1255 len = strlen(tmp);\r
1256 nm = in_get_key_name(-1, -PBTN_MA3);\r
1257 snprintf(tmp + len, sizeof(tmp) - len, "(%s=yes, ", nm);\r
1258 len = strlen(tmp);\r
1259 nm = in_get_key_name(-1, -PBTN_MBACK);\r
1260 snprintf(tmp + len, sizeof(tmp) - len, "%s=no)", nm);\r
1261\r
1262 plat_status_msg_busy_first(tmp);\r
1263\r
1264 in_set_config_int(0, IN_CFG_BLOCKING, 1);\r
1265 while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))\r
1266 ;\r
1267 while ( !((keys = in_menu_wait_any(NULL, 50)) & (PBTN_MA3|PBTN_MBACK)) )\r
1268 ;\r
1269 if (keys & PBTN_MBACK)\r
1270 do_it = 0;\r
1271 while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))\r
1272 ;\r
1273 in_set_config_int(0, IN_CFG_BLOCKING, 0);\r
1274 }\r
1275 if (do_it) {\r
1276 plat_status_msg_busy_first((which & PEV_STATE_LOAD) ? "LOADING STATE" : "SAVING STATE");\r
1277 PicoStateProgressCB = plat_status_msg_busy_next;\r
1278 emu_save_load_game((which & PEV_STATE_LOAD) ? 1 : 0, 0);\r
1279 PicoStateProgressCB = NULL;\r
1280 }\r
1281 }\r
1282 if (which & PEV_SWITCH_RND)\r
1283 {\r
1284 plat_video_toggle_renderer(1, 0);\r
1285 }\r
1286 if (which & (PEV_SSLOT_PREV|PEV_SSLOT_NEXT))\r
1287 {\r
1288 if (which & PEV_SSLOT_PREV) {\r
1289 state_slot -= 1;\r
1290 if (state_slot < 0)\r
1291 state_slot = 9;\r
1292 } else {\r
1293 state_slot += 1;\r
1294 if (state_slot > 9)\r
1295 state_slot = 0;\r
1296 }\r
1297\r
1298 emu_status_msg("SAVE SLOT %i [%s]", state_slot,\r
1299 emu_check_save_file(state_slot, NULL) ? "USED" : "FREE");\r
1300 }\r
1301 if (which & PEV_MENU)\r
1302 engineState = PGS_Menu;\r
1303}\r
1304\r
1305void emu_update_input(void)\r
1306{\r
1307 static int prev_events = 0;\r
1308 int actions[IN_BINDTYPE_COUNT] = { 0, };\r
1309 int pl_actions[2];\r
1310 int events;\r
1311\r
1312 in_update(actions);\r
1313\r
1314 pl_actions[0] = actions[IN_BINDTYPE_PLAYER12];\r
1315 pl_actions[1] = actions[IN_BINDTYPE_PLAYER12] >> 16;\r
1316\r
1317 PicoPad[0] = pl_actions[0] & 0xfff;\r
1318 PicoPad[1] = pl_actions[1] & 0xfff;\r
1319\r
1320 if (pl_actions[0] & 0x7000)\r
1321 do_turbo(&PicoPad[0], pl_actions[0]);\r
1322 if (pl_actions[1] & 0x7000)\r
1323 do_turbo(&PicoPad[1], pl_actions[1]);\r
1324\r
1325 events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1326\r
1327 // volume is treated in special way and triggered every frame\r
1328 if (events & (PEV_VOL_DOWN|PEV_VOL_UP))\r
1329 plat_update_volume(1, events & PEV_VOL_UP);\r
1330\r
1331 if ((events ^ prev_events) & PEV_FF) {\r
1332 emu_set_fastforward(events & PEV_FF);\r
1333 plat_update_volume(0, 0);\r
1334 reset_timing = 1;\r
1335 }\r
1336\r
1337 events &= ~prev_events;\r
1338\r
1339 if (PicoAHW == PAHW_PICO)\r
1340 run_events_pico(events);\r
1341 if (events)\r
1342 run_events_ui(events);\r
1343 if (movie_data)\r
1344 update_movie();\r
1345\r
1346 prev_events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1347}\r
1348\r
1349static void mkdir_path(char *path_with_reserve, int pos, const char *name)\r
1350{\r
1351 strcpy(path_with_reserve + pos, name);\r
1352 if (plat_is_dir(path_with_reserve))\r
1353 return;\r
1354 if (mkdir(path_with_reserve, 0777) < 0)\r
1355 lprintf("failed to create: %s\n", path_with_reserve);\r
1356}\r
1357\r
1358void emu_cmn_forced_frame(int no_scale, int do_emu)\r
1359{\r
1360 int po_old = PicoOpt;\r
1361\r
1362 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
1363\r
1364 PicoOpt &= ~POPT_ALT_RENDERER;\r
1365 PicoOpt |= POPT_ACC_SPRITES;\r
1366 if (!no_scale)\r
1367 PicoOpt |= POPT_EN_SOFTSCALE;\r
1368\r
1369 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
1370 Pico.m.dirtyPal = 1;\r
1371 if (do_emu)\r
1372 PicoFrame();\r
1373 else\r
1374 PicoFrameDrawOnly();\r
1375\r
1376 PicoOpt = po_old;\r
1377}\r
1378\r
1379void emu_init(void)\r
1380{\r
1381 char path[512];\r
1382 int pos;\r
1383\r
1384#if 0\r
1385 // FIXME: handle through menu, etc\r
1386 FILE *f;\r
1387 f = fopen("32X_M_BIOS.BIN", "rb");\r
1388 p32x_bios_m = malloc(2048);\r
1389 fread(p32x_bios_m, 1, 2048, f);\r
1390 fclose(f);\r
1391 f = fopen("32X_S_BIOS.BIN", "rb");\r
1392 p32x_bios_s = malloc(1024);\r
1393 fread(p32x_bios_s, 1, 1024, f);\r
1394 fclose(f);\r
1395#endif\r
1396\r
1397 /* make dirs for saves */\r
1398 pos = plat_get_root_dir(path, sizeof(path) - 4);\r
1399 mkdir_path(path, pos, "mds");\r
1400 mkdir_path(path, pos, "srm");\r
1401 mkdir_path(path, pos, "brm");\r
1402\r
1403 pprof_init();\r
1404\r
1405 make_config_cfg(path);\r
1406 config_readlrom(path);\r
1407\r
1408 PicoInit();\r
1409 PicoMessage = plat_status_msg_busy_next;\r
1410 PicoMCDopenTray = emu_tray_open;\r
1411 PicoMCDcloseTray = emu_tray_close;\r
1412}\r
1413\r
1414void emu_finish(void)\r
1415{\r
1416 // save SRAM\r
1417 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {\r
1418 emu_save_load_game(0, 1);\r
1419 SRam.changed = 0;\r
1420 }\r
1421\r
1422 if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {\r
1423 char cfg[512];\r
1424 make_config_cfg(cfg);\r
1425 config_writelrom(cfg);\r
1426#ifndef NO_SYNC\r
1427 sync();\r
1428#endif\r
1429 }\r
1430\r
1431 pprof_finish();\r
1432\r
1433 PicoExit();\r
1434}\r
1435\r
1436static void skip_frame(int do_audio)\r
1437{\r
1438 PicoSkipFrame = do_audio ? 1 : 2;\r
1439 PicoFrame();\r
1440 PicoSkipFrame = 0;\r
1441}\r
1442\r
1443/* our tick here is 1 us right now */\r
1444#define ms_to_ticks(x) (unsigned int)(x * 1000)\r
1445#define get_ticks() plat_get_ticks_us()\r
1446\r
1447void emu_loop(void)\r
1448{\r
1449 int pframes_done; /* "period" frames, used for sync */\r
1450 int frames_done, frames_shown; /* actual frames for fps counter */\r
1451 int target_fps, target_frametime;\r
1452 unsigned int timestamp_base = 0, timestamp_fps;\r
1453 char *notice_msg = NULL;\r
1454 char fpsbuff[24];\r
1455 int i;\r
1456\r
1457 fpsbuff[0] = 0;\r
1458\r
1459 /* make sure we are in correct mode */\r
1460 Pico.m.dirtyPal = 1;\r
1461 rendstatus_old = -1;\r
1462\r
1463 PicoLoopPrepare();\r
1464\r
1465 // prepare CD buffer\r
1466 if (PicoAHW & PAHW_MCD)\r
1467 PicoCDBufferInit();\r
1468\r
1469 pemu_loop_prep();\r
1470\r
1471 /* number of ticks per frame */\r
1472 if (Pico.m.pal) {\r
1473 target_fps = 50;\r
1474 target_frametime = ms_to_ticks(1000) / 50;\r
1475 } else {\r
1476 target_fps = 60;\r
1477 target_frametime = ms_to_ticks(1000) / 60 + 1;\r
1478 }\r
1479\r
1480 timestamp_fps = get_ticks();\r
1481 reset_timing = 1;\r
1482\r
1483 frames_done = frames_shown = pframes_done = 0;\r
1484\r
1485 plat_video_wait_vsync();\r
1486\r
1487 /* loop with resync every 1 sec. */\r
1488 while (engineState == PGS_Running)\r
1489 {\r
1490 unsigned int timestamp;\r
1491 int diff, diff_lim;\r
1492\r
1493 pprof_start(main);\r
1494\r
1495 timestamp = get_ticks();\r
1496 if (reset_timing) {\r
1497 reset_timing = 0;\r
1498 timestamp_base = timestamp;\r
1499 pframes_done = 0;\r
1500 }\r
1501\r
1502 // show notice_msg message?\r
1503 if (notice_msg_time != 0)\r
1504 {\r
1505 static int noticeMsgSum;\r
1506 if (timestamp - ms_to_ticks(notice_msg_time) > ms_to_ticks(STATUS_MSG_TIMEOUT)) {\r
1507 notice_msg_time = 0;\r
1508 plat_status_msg_clear();\r
1509 notice_msg = NULL;\r
1510 } else {\r
1511 int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];\r
1512 if (sum != noticeMsgSum) {\r
1513 plat_status_msg_clear();\r
1514 noticeMsgSum = sum;\r
1515 }\r
1516 notice_msg = noticeMsg;\r
1517 }\r
1518 }\r
1519\r
1520 // second changed?\r
1521 if (timestamp - timestamp_fps >= ms_to_ticks(1000))\r
1522 {\r
1523#ifdef BENCHMARK\r
1524 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1525 if (++bench == 10) {\r
1526 bench = 0;\r
1527 bench_fps_s = bench_fps;\r
1528 bf[bfp++ & 3] = bench_fps;\r
1529 bench_fps = 0;\r
1530 }\r
1531 bench_fps += frames_shown;\r
1532 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1533 printf("%s\n", fpsbuff);\r
1534#else\r
1535 if (currentConfig.EmuOpt & EOPT_SHOW_FPS) {\r
1536 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1537 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
1538 }\r
1539#endif\r
1540 frames_shown = frames_done = 0;\r
1541 timestamp_fps += ms_to_ticks(1000);\r
1542 }\r
1543#ifdef PFRAMES\r
1544 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
1545#endif\r
1546\r
1547 if (timestamp - timestamp_base >= ms_to_ticks(1000))\r
1548 {\r
1549 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && currentConfig.Frameskip >= 0)\r
1550 pframes_done = 0;\r
1551 else\r
1552 pframes_done -= target_fps;\r
1553 if (pframes_done < -2) {\r
1554 /* don't drag more than 2 frames behind */\r
1555 pframes_done = -2;\r
1556 timestamp_base = timestamp - 2 * target_frametime;\r
1557 }\r
1558 else\r
1559 timestamp_base += ms_to_ticks(1000);\r
1560 }\r
1561\r
1562 diff = timestamp - timestamp_base;\r
1563 diff_lim = (pframes_done + 1) * target_frametime;\r
1564\r
1565 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
1566 {\r
1567 for (i = 0; i < currentConfig.Frameskip; i++) {\r
1568 emu_update_input();\r
1569 skip_frame(1);\r
1570 pframes_done++; frames_done++;\r
1571 diff_lim += target_frametime;\r
1572\r
1573 if (!(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT))) {\r
1574 timestamp = get_ticks();\r
1575 diff = timestamp - timestamp_base;\r
1576 if (!reset_timing && diff < diff_lim) // we are too fast\r
1577 plat_wait_till_us(timestamp_base + diff_lim);\r
1578 }\r
1579 }\r
1580 }\r
1581 else if (diff > diff_lim)\r
1582 {\r
1583 /* no time left for this frame - skip */\r
1584 /* limit auto frameskip to 8 */\r
1585 if (frames_done / 8 <= frames_shown) {\r
1586 emu_update_input();\r
1587 skip_frame(diff < diff_lim + target_frametime * 16);\r
1588 pframes_done++; frames_done++;\r
1589 continue;\r
1590 }\r
1591 }\r
1592\r
1593 emu_update_input();\r
1594 PicoFrame();\r
1595 pemu_finalize_frame(fpsbuff, notice_msg);\r
1596\r
1597 // plat_video_flip();\r
1598\r
1599 /* frame limiter */\r
1600 if (!reset_timing && !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))\r
1601 {\r
1602 timestamp = get_ticks();\r
1603 diff = timestamp - timestamp_base;\r
1604\r
1605 // sleep or vsync if we are still too fast\r
1606 if (diff < diff_lim)\r
1607 {\r
1608 // we are too fast\r
1609 plat_wait_till_us(timestamp_base + diff_lim - target_frametime / 4);\r
1610 if (currentConfig.EmuOpt & EOPT_VSYNC)\r
1611 plat_video_wait_vsync();\r
1612 }\r
1613 }\r
1614\r
1615 // XXX: for some plats it might be better to flip before vsync\r
1616 // (due to shadow registers in display hw)\r
1617 plat_video_flip();\r
1618\r
1619 pframes_done++; frames_done++; frames_shown++;\r
1620\r
1621 pprof_end(main);\r
1622 }\r
1623\r
1624 emu_set_fastforward(0);\r
1625\r
1626 // save SRAM\r
1627 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {\r
1628 plat_status_msg_busy_first("Writing SRAM/BRAM...");\r
1629 emu_save_load_game(0, 1);\r
1630 SRam.changed = 0;\r
1631 }\r
1632\r
1633 pemu_loop_end();\r
1634\r
1635 // pemu_loop_end() might want to do 1 frame for bg image,\r
1636 // so free CD buffer here\r
1637 if (PicoAHW & PAHW_MCD)\r
1638 PicoCDBufferFree();\r
1639}\r
1640\r
fast MegaDrive/MegaCD/32X emulator