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add a hack for Decap Attack
[picodrive.git] / platform / common / emu.c
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CommitLineData
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 <string.h>\r
12#include <stdarg.h>\r
13#ifdef __GP2X__\r
14#include <unistd.h>\r
15#endif\r
16\r
17#include "../libpicofe/posix.h"\r
18#include "../libpicofe/input.h"\r
19#include "../libpicofe/fonts.h"\r
20#include "../libpicofe/sndout.h"\r
21#include "../libpicofe/lprintf.h"\r
22#include "../libpicofe/plat.h"\r
23#include "emu.h"\r
24#include "input_pico.h"\r
25#include "menu_pico.h"\r
26#include "config_file.h"\r
27\r
28#include <pico/pico_int.h>\r
29#include <pico/patch.h>\r
30\r
31#if defined(__GNUC__) && __GNUC__ >= 7\r
32#pragma GCC diagnostic ignored "-Wformat-truncation"\r
33#endif\r
34\r
35#ifndef _WIN32\r
36#define PATH_SEP "/"\r
37#define PATH_SEP_C '/'\r
38#else\r
39#define PATH_SEP "\\"\r
40#define PATH_SEP_C '\\'\r
41#endif\r
42\r
43#define STATUS_MSG_TIMEOUT 2000\r
44\r
45void *g_screen_ptr;\r
46\r
47int g_screen_width = 320;\r
48int g_screen_height = 240;\r
49int g_screen_ppitch = 320; // pitch in pixels\r
50\r
51const char *PicoConfigFile = "config2.cfg";\r
52currentConfig_t currentConfig, defaultConfig;\r
53int state_slot = 0;\r
54int config_slot = 0, config_slot_current = 0;\r
55int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
56int pico_inp_mode;\r
57int flip_after_sync;\r
58int engineState = PGS_Menu;\r
59\r
60static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
61\r
62/* tmp buff to reduce stack usage for plats with small stack */\r
63static char static_buff[512];\r
64const char *rom_fname_reload;\r
65char rom_fname_loaded[512];\r
66int reset_timing = 0;\r
67static unsigned int notice_msg_time; /* when started showing */\r
68static char noticeMsg[40];\r
69\r
70unsigned char *movie_data = NULL;\r
71static int movie_size = 0;\r
72\r
73\r
74/* don't use tolower() for easy old glibc binary compatibility */\r
75static void strlwr_(char *string)\r
76{\r
77 char *p;\r
78 for (p = string; *p; p++)\r
79 if ('A' <= *p && *p <= 'Z')\r
80 *p += 'a' - 'A';\r
81}\r
82\r
83static int try_rfn_cut(char *fname)\r
84{\r
85 FILE *tmp;\r
86 char *p;\r
87\r
88 p = fname + strlen(fname) - 1;\r
89 for (; p > fname; p--)\r
90 if (*p == '.') break;\r
91 *p = 0;\r
92\r
93 if((tmp = fopen(fname, "rb"))) {\r
94 fclose(tmp);\r
95 return 1;\r
96 }\r
97 return 0;\r
98}\r
99\r
100static void get_ext(const char *file, char *ext)\r
101{\r
102 const char *p;\r
103\r
104 p = file + strlen(file) - 4;\r
105 if (p < file) p = file;\r
106 strncpy(ext, p, 4);\r
107 ext[4] = 0;\r
108 strlwr_(ext);\r
109}\r
110\r
111static void fname_ext(char *dst, int dstlen, const char *prefix, const char *ext, const char *fname)\r
112{\r
113 int prefix_len = 0;\r
114 const char *p;\r
115\r
116 *dst = 0;\r
117 if (prefix) {\r
118 int len = plat_get_root_dir(dst, dstlen);\r
119 strcpy(dst + len, prefix);\r
120 prefix_len = len + strlen(prefix);\r
121 }\r
122\r
123 p = fname + strlen(fname) - 1;\r
124 for (; p >= fname && *p != PATH_SEP_C; p--)\r
125 ;\r
126 p++;\r
127 strncpy(dst + prefix_len, p, dstlen - prefix_len - 1);\r
128\r
129 dst[dstlen - 8] = 0;\r
130 if (dst[strlen(dst) - 4] == '.')\r
131 dst[strlen(dst) - 4] = 0;\r
132 if (ext)\r
133 strcat(dst, ext);\r
134}\r
135\r
136static void romfname_ext(char *dst, int dstlen, const char *prefix, const char *ext)\r
137{\r
138 fname_ext(dst, dstlen, prefix, ext, rom_fname_loaded);\r
139}\r
140\r
141void emu_status_msg(const char *format, ...)\r
142{\r
143 va_list vl;\r
144 int ret;\r
145\r
146 va_start(vl, format);\r
147 ret = vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);\r
148 va_end(vl);\r
149\r
150 /* be sure old text gets overwritten */\r
151 for (; ret < 28; ret++)\r
152 noticeMsg[ret] = ' ';\r
153 noticeMsg[ret] = 0;\r
154\r
155 notice_msg_time = plat_get_ticks_ms();\r
156}\r
157\r
158static const char * const biosfiles_us[] = {\r
159 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"\r
160};\r
161static const char * const biosfiles_eu[] = {\r
162 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"\r
163};\r
164static const char * const biosfiles_jp[] = {\r
165 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"\r
166};\r
167\r
168static const char *find_bios(int *region, const char *cd_fname)\r
169{\r
170 int i, count;\r
171 const char * const *files;\r
172 FILE *f = NULL;\r
173 int ret;\r
174\r
175 // we need to have config loaded at this point\r
176 ret = emu_read_config(cd_fname, 0);\r
177 if (!ret) emu_read_config(NULL, 0);\r
178\r
179 if (PicoIn.regionOverride) {\r
180 *region = PicoIn.regionOverride;\r
181 lprintf("override region to %s\n", *region != 4 ?\r
182 (*region == 8 ? "EU" : "JAP") : "USA");\r
183 }\r
184\r
185 if (*region == 4) { // US\r
186 files = biosfiles_us;\r
187 count = sizeof(biosfiles_us) / sizeof(char *);\r
188 } else if (*region == 8) { // EU\r
189 files = biosfiles_eu;\r
190 count = sizeof(biosfiles_eu) / sizeof(char *);\r
191 } else if (*region == 1 || *region == 2) {\r
192 files = biosfiles_jp;\r
193 count = sizeof(biosfiles_jp) / sizeof(char *);\r
194 } else {\r
195 return 0;\r
196 }\r
197\r
198 for (i = 0; i < count; i++)\r
199 {\r
200 emu_make_path(static_buff, files[i], sizeof(static_buff) - 4);\r
201 strcat(static_buff, ".bin");\r
202 f = fopen(static_buff, "rb");\r
203 if (f) break;\r
204\r
205 static_buff[strlen(static_buff) - 4] = 0;\r
206 strcat(static_buff, ".zip");\r
207 f = fopen(static_buff, "rb");\r
208 if (f) break;\r
209 }\r
210\r
211 if (f) {\r
212 lprintf("using bios: %s\n", static_buff);\r
213 fclose(f);\r
214 return static_buff;\r
215 } else {\r
216 sprintf(static_buff, "no %s BIOS files found, read docs",\r
217 *region != 4 ? (*region == 8 ? "EU" : "JAP") : "USA");\r
218 menu_update_msg(static_buff);\r
219 return NULL;\r
220 }\r
221}\r
222\r
223/* check if the name begins with BIOS name */\r
224/*\r
225static int emu_isBios(const char *name)\r
226{\r
227 int i;\r
228 for (i = 0; i < sizeof(biosfiles_us)/sizeof(biosfiles_us[0]); i++)\r
229 if (strstr(name, biosfiles_us[i]) != NULL) return 1;\r
230 for (i = 0; i < sizeof(biosfiles_eu)/sizeof(biosfiles_eu[0]); i++)\r
231 if (strstr(name, biosfiles_eu[i]) != NULL) return 1;\r
232 for (i = 0; i < sizeof(biosfiles_jp)/sizeof(biosfiles_jp[0]); i++)\r
233 if (strstr(name, biosfiles_jp[i]) != NULL) return 1;\r
234 return 0;\r
235}\r
236*/\r
237\r
238static int extract_text(char *dest, const unsigned char *src, int len, int swab)\r
239{\r
240 char *p = dest;\r
241 int i;\r
242\r
243 if (swab) swab = 1;\r
244\r
245 for (i = len - 1; i >= 0; i--)\r
246 {\r
247 if (src[i^swab] != ' ') break;\r
248 }\r
249 len = i + 1;\r
250\r
251 for (i = 0; i < len; i++)\r
252 {\r
253 unsigned char s = src[i^swab];\r
254 if (s >= 0x20 && s < 0x7f && s != '#' && s != '|' &&\r
255 s != '[' && s != ']' && s != '\\')\r
256 {\r
257 *p++ = s;\r
258 }\r
259 else\r
260 {\r
261 sprintf(p, "\\%02x", s);\r
262 p += 3;\r
263 }\r
264 }\r
265\r
266 return p - dest;\r
267}\r
268\r
269static char *emu_make_rom_id(const char *fname)\r
270{\r
271 static char id_string[3+0xe*3+0x3*3+0x30*3+3];\r
272 int pos, swab = 1;\r
273\r
274 if (PicoIn.AHW & PAHW_MCD) {\r
275 strcpy(id_string, "CD|");\r
276 swab = 0;\r
277 }\r
278 else if (PicoIn.AHW & PAHW_SMS)\r
279 strcpy(id_string, "MS|");\r
280 else strcpy(id_string, "MD|");\r
281 pos = 3;\r
282\r
283 if (!(PicoIn.AHW & PAHW_SMS)) {\r
284 pos += extract_text(id_string + pos, media_id_header + 0x80, 0x0e, swab); // serial\r
285 id_string[pos] = '|'; pos++;\r
286 pos += extract_text(id_string + pos, media_id_header + 0xf0, 0x03, swab); // region\r
287 id_string[pos] = '|'; pos++;\r
288 pos += extract_text(id_string + pos, media_id_header + 0x50, 0x30, swab); // overseas name\r
289 id_string[pos] = 0;\r
290 if (pos > 5)\r
291 return id_string;\r
292 pos = 3;\r
293 }\r
294\r
295 // can't find name in ROM, use filename\r
296 fname_ext(id_string + 3, sizeof(id_string) - 3, NULL, NULL, fname);\r
297\r
298 return id_string;\r
299}\r
300\r
301// buffer must be at least 150 byte long\r
302void emu_get_game_name(char *str150)\r
303{\r
304 int ret, swab = (PicoIn.AHW & PAHW_MCD) ? 0 : 1;\r
305 char *s, *d;\r
306\r
307 ret = extract_text(str150, media_id_header + 0x50, 0x30, swab); // overseas name\r
308\r
309 for (s = d = str150 + 1; s < str150+ret; s++)\r
310 {\r
311 if (*s == 0) break;\r
312 if (*s != ' ' || d[-1] != ' ')\r
313 *d++ = *s;\r
314 }\r
315 *d = 0;\r
316}\r
317\r
318static void system_announce(void)\r
319{\r
320 const char *sys_name, *tv_standard, *extra = "";\r
321 int fps;\r
322\r
323 if (PicoIn.AHW & PAHW_SMS) {\r
324 sys_name = "Master System";\r
325#ifdef NO_SMS\r
326 extra = " [no support]";\r
327#endif\r
328 } else if (PicoIn.AHW & PAHW_PICO) {\r
329 sys_name = "Pico";\r
330 } else if ((PicoIn.AHW & (PAHW_32X|PAHW_MCD)) == (PAHW_32X|PAHW_MCD)) {\r
331 sys_name = "32X + Mega CD";\r
332 if ((Pico.m.hardware & 0xc0) == 0x80)\r
333 sys_name = "32X + Sega CD";\r
334 } else if (PicoIn.AHW & PAHW_MCD) {\r
335 sys_name = "Mega CD";\r
336 if ((Pico.m.hardware & 0xc0) == 0x80)\r
337 sys_name = "Sega CD";\r
338 } else if (PicoIn.AHW & PAHW_32X) {\r
339 sys_name = "32X";\r
340 } else {\r
341 sys_name = "MegaDrive";\r
342 if ((Pico.m.hardware & 0xc0) == 0x80)\r
343 sys_name = "Genesis";\r
344 }\r
345 tv_standard = Pico.m.pal ? "PAL" : "NTSC";\r
346 fps = Pico.m.pal ? 50 : 60;\r
347\r
348 emu_status_msg("%s %s / %dFPS%s", tv_standard, sys_name, fps, extra);\r
349}\r
350\r
351static void do_region_override(const char *media_fname)\r
352{\r
353 // we only need to override region if config tells us so\r
354 int ret = emu_read_config(media_fname, 0);\r
355 if (!ret) emu_read_config(NULL, 0);\r
356}\r
357\r
358int emu_reload_rom(const char *rom_fname_in)\r
359{\r
360 // use setting before rom config is loaded\r
361 int autoload = g_autostateld_opt;\r
362 char *rom_fname = NULL;\r
363 char ext[5];\r
364 enum media_type_e media_type;\r
365 int menu_romload_started = 0;\r
366 char carthw_path[512];\r
367 int retval = 0;\r
368\r
369 lprintf("emu_ReloadRom(%s)\n", rom_fname_in);\r
370\r
371 rom_fname = strdup(rom_fname_in);\r
372 if (rom_fname == NULL)\r
373 return 0;\r
374\r
375 get_ext(rom_fname, ext);\r
376\r
377 // early cleanup\r
378 PicoPatchUnload();\r
379 if (movie_data) {\r
380 free(movie_data);\r
381 movie_data = 0;\r
382 }\r
383\r
384 if (!strcmp(ext, ".gmv"))\r
385 {\r
386 // check for both gmv and rom\r
387 int dummy;\r
388 FILE *movie_file = fopen(rom_fname, "rb");\r
389 if (!movie_file) {\r
390 menu_update_msg("Failed to open movie.");\r
391 goto out;\r
392 }\r
393 fseek(movie_file, 0, SEEK_END);\r
394 movie_size = ftell(movie_file);\r
395 fseek(movie_file, 0, SEEK_SET);\r
396 if (movie_size < 64+3) {\r
397 menu_update_msg("Invalid GMV file.");\r
398 fclose(movie_file);\r
399 goto out;\r
400 }\r
401 movie_data = malloc(movie_size);\r
402 if (movie_data == NULL) {\r
403 menu_update_msg("low memory.");\r
404 fclose(movie_file);\r
405 goto out;\r
406 }\r
407 dummy = fread(movie_data, 1, movie_size, movie_file);\r
408 fclose(movie_file);\r
409 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
410 menu_update_msg("Invalid GMV file.");\r
411 goto out;\r
412 }\r
413 dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
414 if (!dummy) {\r
415 menu_update_msg("Could't find a ROM for movie.");\r
416 goto out;\r
417 }\r
418 get_ext(rom_fname, ext);\r
419 lprintf("gmv loaded for %s\n", rom_fname);\r
420 }\r
421 else if (!strcmp(ext, ".pat"))\r
422 {\r
423 int dummy;\r
424 PicoPatchLoad(rom_fname);\r
425 dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
426 if (!dummy) {\r
427 menu_update_msg("Could't find a ROM to patch.");\r
428 goto out;\r
429 }\r
430 get_ext(rom_fname, ext);\r
431 }\r
432\r
433 menu_romload_prepare(rom_fname); // also CD load\r
434 menu_romload_started = 1;\r
435\r
436 emu_make_path(carthw_path, "carthw.cfg", sizeof(carthw_path));\r
437\r
438 media_type = PicoLoadMedia(rom_fname, carthw_path,\r
439 find_bios, do_region_override);\r
440\r
441 switch (media_type) {\r
442 case PM_BAD_DETECT:\r
443 menu_update_msg("Not a ROM/CD img selected.");\r
444 goto out;\r
445 case PM_BAD_CD:\r
446 menu_update_msg("Invalid CD image");\r
447 goto out;\r
448 case PM_BAD_CD_NO_BIOS:\r
449 // find_bios() prints a message\r
450 goto out;\r
451 case PM_ERROR:\r
452 menu_update_msg("Load error");\r
453 goto out;\r
454 default:\r
455 break;\r
456 }\r
457\r
458 // make quirks visible in UI\r
459 if (PicoIn.quirks & PQUIRK_FORCE_6BTN)\r
460 currentConfig.input_dev0 = PICO_INPUT_PAD_6BTN;\r
461\r
462 menu_romload_end();\r
463 menu_romload_started = 0;\r
464\r
465 if (PicoPatches) {\r
466 PicoPatchPrepare();\r
467 PicoPatchApply();\r
468 }\r
469\r
470 // additional movie stuff\r
471 if (movie_data)\r
472 {\r
473 enum input_device indev = (movie_data[0x14] == '6') ?\r
474 PICO_INPUT_PAD_6BTN : PICO_INPUT_PAD_3BTN;\r
475 PicoSetInputDevice(0, indev);\r
476 PicoSetInputDevice(1, indev);\r
477\r
478 PicoIn.opt |= POPT_DIS_VDP_FIFO; // no VDP fifo timing\r
479 if (movie_data[0xF] >= 'A') {\r
480 if (movie_data[0x16] & 0x80) {\r
481 PicoIn.regionOverride = 8;\r
482 } else {\r
483 PicoIn.regionOverride = 4;\r
484 }\r
485 PicoReset();\r
486 // TODO: bits 6 & 5\r
487 }\r
488 movie_data[0x18+30] = 0;\r
489 emu_status_msg("MOVIE: %s", (char *) &movie_data[0x18]);\r
490 }\r
491 else\r
492 {\r
493 system_announce();\r
494 PicoIn.opt &= ~POPT_DIS_VDP_FIFO;\r
495 }\r
496\r
497 strncpy(rom_fname_loaded, rom_fname, sizeof(rom_fname_loaded)-1);\r
498 rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;\r
499\r
500 // load SRAM for this ROM\r
501 if (currentConfig.EmuOpt & EOPT_EN_SRAM)\r
502 emu_save_load_game(1, 1);\r
503\r
504 // state autoload?\r
505 if (autoload) {\r
506 int time, newest = 0, newest_slot = -1;\r
507 int slot;\r
508\r
509 for (slot = 0; slot < 10; slot++) {\r
510 if (emu_check_save_file(slot, &time)) {\r
511 if (time > newest) {\r
512 newest = time;\r
513 newest_slot = slot;\r
514 }\r
515 }\r
516 }\r
517\r
518 if (newest_slot >= 0) {\r
519 lprintf("autoload slot %d\n", newest_slot);\r
520 state_slot = newest_slot;\r
521 emu_save_load_game(1, 0);\r
522 }\r
523 else {\r
524 lprintf("no save to autoload.\n");\r
525 }\r
526 }\r
527\r
528 retval = 1;\r
529out:\r
530 if (menu_romload_started)\r
531 menu_romload_end();\r
532 free(rom_fname);\r
533 return retval;\r
534}\r
535\r
536int emu_swap_cd(const char *fname)\r
537{\r
538 enum cd_img_type cd_type;\r
539 int ret = -1;\r
540\r
541 cd_type = PicoCdCheck(fname, NULL);\r
542 if (cd_type != CIT_NOT_CD)\r
543 ret = cdd_load(fname, cd_type);\r
544 if (ret != 0) {\r
545 menu_update_msg("Load failed, invalid CD image?");\r
546 return 0;\r
547 }\r
548\r
549 strncpy(rom_fname_loaded, fname, sizeof(rom_fname_loaded)-1);\r
550 rom_fname_loaded[sizeof(rom_fname_loaded) - 1] = 0;\r
551\r
552 return 1;\r
553}\r
554\r
555// <base dir><end>\r
556void emu_make_path(char *buff, const char *end, int size)\r
557{\r
558 int pos, end_len;\r
559\r
560 end_len = strlen(end);\r
561 pos = plat_get_root_dir(buff, size);\r
562 strncpy(buff + pos, end, size - pos);\r
563 buff[size - 1] = 0;\r
564 if (pos + end_len > size - 1)\r
565 lprintf("Warning: path truncated: %s\n", buff);\r
566}\r
567\r
568static void make_config_cfg(char *cfg_buff_512)\r
569{\r
570 emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);\r
571 if (config_slot != 0)\r
572 {\r
573 char *p = strrchr(cfg_buff_512, '.');\r
574 if (p == NULL)\r
575 p = cfg_buff_512 + strlen(cfg_buff_512);\r
576 sprintf(p, ".%i.cfg", config_slot);\r
577 }\r
578 cfg_buff_512[511] = 0;\r
579}\r
580\r
581void emu_prep_defconfig(void)\r
582{\r
583 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
584 defaultConfig.EmuOpt = 0x9d | EOPT_EN_CD_LEDS;\r
585 defaultConfig.s_PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |\r
586 POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |\r
587 POPT_EN_DRC|POPT_ACC_SPRITES |\r
588 POPT_EN_32X|POPT_EN_PWM;\r
589 defaultConfig.s_PsndRate = 44100;\r
590 defaultConfig.s_PicoRegion = 0; // auto\r
591 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
592 defaultConfig.s_PicoCDBuffers = 0;\r
593 defaultConfig.confirm_save = EOPT_CONFIRM_SAVE;\r
594 defaultConfig.Frameskip = -1; // auto\r
595 defaultConfig.input_dev0 = PICO_INPUT_PAD_3BTN;\r
596 defaultConfig.input_dev1 = PICO_INPUT_PAD_3BTN;\r
597 defaultConfig.volume = 50;\r
598 defaultConfig.gamma = 100;\r
599 defaultConfig.scaling = 0;\r
600 defaultConfig.turbo_rate = 15;\r
601 defaultConfig.msh2_khz = PICO_MSH2_HZ / 1000;\r
602 defaultConfig.ssh2_khz = PICO_SSH2_HZ / 1000;\r
603\r
604 // platform specific overrides\r
605 pemu_prep_defconfig();\r
606}\r
607\r
608void emu_set_defconfig(void)\r
609{\r
610 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
611 PicoIn.opt = currentConfig.s_PicoOpt;\r
612 PicoIn.sndRate = currentConfig.s_PsndRate;\r
613 PicoIn.regionOverride = currentConfig.s_PicoRegion;\r
614 PicoIn.autoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
615}\r
616\r
617int emu_read_config(const char *rom_fname, int no_defaults)\r
618{\r
619 char cfg[512];\r
620 int ret;\r
621\r
622 if (!no_defaults)\r
623 emu_set_defconfig();\r
624\r
625 if (rom_fname == NULL)\r
626 {\r
627 // global config\r
628 make_config_cfg(cfg);\r
629 ret = config_readsect(cfg, NULL);\r
630 }\r
631 else\r
632 {\r
633 char ext[16];\r
634 int vol;\r
635\r
636 if (config_slot != 0)\r
637 snprintf(ext, sizeof(ext), ".%i.cfg", config_slot);\r
638 else\r
639 strcpy(ext, ".cfg");\r
640\r
641 fname_ext(cfg, sizeof(cfg), "cfg"PATH_SEP, ext, rom_fname);\r
642\r
643 // read user's config\r
644 vol = currentConfig.volume;\r
645 ret = config_readsect(cfg, NULL);\r
646 currentConfig.volume = vol; // make vol global (bah)\r
647\r
648 if (ret != 0)\r
649 {\r
650 // read global config, and apply game_def.cfg on top\r
651 make_config_cfg(cfg);\r
652 config_readsect(cfg, NULL);\r
653\r
654 emu_make_path(cfg, "game_def.cfg", sizeof(cfg));\r
655 ret = config_readsect(cfg, emu_make_rom_id(rom_fname));\r
656 }\r
657 }\r
658\r
659 pemu_validate_config();\r
660 PicoIn.overclockM68k = currentConfig.overclock_68k;\r
661\r
662 // some sanity checks\r
663#ifdef PSP\r
664 /* TODO: mv to plat_validate_config() */\r
665 if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
666 if (currentConfig.gamma < -4 || currentConfig.gamma > 16) currentConfig.gamma = 0;\r
667 if (currentConfig.gamma2 < 0 || currentConfig.gamma2 > 2) currentConfig.gamma2 = 0;\r
668#endif\r
669 if (currentConfig.volume < 0 || currentConfig.volume > 99)\r
670 currentConfig.volume = 50;\r
671\r
672 if (ret == 0)\r
673 config_slot_current = config_slot;\r
674\r
675 return (ret == 0);\r
676}\r
677\r
678\r
679int emu_write_config(int is_game)\r
680{\r
681 char cfg[512];\r
682 int ret, write_lrom = 0;\r
683\r
684 if (!is_game)\r
685 {\r
686 make_config_cfg(cfg);\r
687 write_lrom = 1;\r
688 } else {\r
689 char ext[16];\r
690\r
691 if (config_slot != 0)\r
692 snprintf(ext, sizeof(ext), ".%i.cfg", config_slot);\r
693 else\r
694 strcpy(ext, ".cfg");\r
695\r
696 romfname_ext(cfg, sizeof(cfg), "cfg"PATH_SEP, ext);\r
697 }\r
698\r
699 lprintf("emu_write_config: %s ", cfg);\r
700 ret = config_write(cfg);\r
701 if (write_lrom) config_writelrom(cfg);\r
702#ifdef __GP2X__\r
703 sync();\r
704#endif\r
705 lprintf((ret == 0) ? "(ok)\n" : "(failed)\n");\r
706\r
707 if (ret == 0) config_slot_current = config_slot;\r
708 return ret == 0;\r
709}\r
710\r
711\r
712/* always using built-in font */\r
713\r
714#define mk_text_out(name, type, val, topleft, step_x, step_y) \\r
715void name(int x, int y, const char *text) \\r
716{ \\r
717 int i, l, len = strlen(text); \\r
718 type *screen = (type *)(topleft) + x * step_x + y * step_y; \\r
719 \\r
720 for (i = 0; i < len; i++, screen += 8 * step_x) \\r
721 { \\r
722 for (l = 0; l < 8; l++) \\r
723 { \\r
724 unsigned char fd = fontdata8x8[text[i] * 8 + l];\\r
725 type *s = screen + l * step_y; \\r
726 if (fd&0x80) s[step_x * 0] = val; \\r
727 if (fd&0x40) s[step_x * 1] = val; \\r
728 if (fd&0x20) s[step_x * 2] = val; \\r
729 if (fd&0x10) s[step_x * 3] = val; \\r
730 if (fd&0x08) s[step_x * 4] = val; \\r
731 if (fd&0x04) s[step_x * 5] = val; \\r
732 if (fd&0x02) s[step_x * 6] = val; \\r
733 if (fd&0x01) s[step_x * 7] = val; \\r
734 } \\r
735 } \\r
736}\r
737\r
738mk_text_out(emu_text_out8, unsigned char, 0xf0, g_screen_ptr, 1, g_screen_ppitch)\r
739mk_text_out(emu_text_out16, unsigned short, 0xffff, g_screen_ptr, 1, g_screen_ppitch)\r
740mk_text_out(emu_text_out8_rot, unsigned char, 0xf0,\r
741 (char *)g_screen_ptr + (g_screen_ppitch - 1) * g_screen_height, -g_screen_height, 1)\r
742mk_text_out(emu_text_out16_rot, unsigned short, 0xffff,\r
743 (short *)g_screen_ptr + (g_screen_ppitch - 1) * g_screen_height, -g_screen_height, 1)\r
744\r
745#undef mk_text_out\r
746\r
747void emu_osd_text16(int x, int y, const char *text)\r
748{\r
749 int len = strlen(text) * 8;\r
750 int i, h;\r
751\r
752 len++;\r
753 if (x + len > g_screen_width)\r
754 len = g_screen_width - x;\r
755\r
756 for (h = 0; h < 8; h++) {\r
757 unsigned short *p;\r
758 p = (unsigned short *)g_screen_ptr\r
759 + x + g_screen_ppitch * (y + h);\r
760 for (i = len; i > 0; i--, p++)\r
761 *p = (*p >> 2) & 0x39e7;\r
762 }\r
763 emu_text_out16(x, y, text);\r
764}\r
765\r
766static void update_movie(void)\r
767{\r
768 int offs = Pico.m.frame_count*3 + 0x40;\r
769 if (offs+3 > movie_size) {\r
770 free(movie_data);\r
771 movie_data = 0;\r
772 emu_status_msg("END OF MOVIE.");\r
773 lprintf("END OF MOVIE.\n");\r
774 } else {\r
775 // MXYZ SACB RLDU\r
776 PicoIn.pad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU\r
777 if(!(movie_data[offs] & 0x10)) PicoIn.pad[0] |= 0x40; // C\r
778 if(!(movie_data[offs] & 0x20)) PicoIn.pad[0] |= 0x10; // A\r
779 if(!(movie_data[offs] & 0x40)) PicoIn.pad[0] |= 0x20; // B\r
780 PicoIn.pad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
781 if(!(movie_data[offs+1] & 0x10)) PicoIn.pad[1] |= 0x40; // C\r
782 if(!(movie_data[offs+1] & 0x20)) PicoIn.pad[1] |= 0x10; // A\r
783 if(!(movie_data[offs+1] & 0x40)) PicoIn.pad[1] |= 0x20; // B\r
784 PicoIn.pad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
785 if(!(movie_data[offs+2] & 0x01)) PicoIn.pad[0] |= 0x0400; // X\r
786 if(!(movie_data[offs+2] & 0x04)) PicoIn.pad[0] |= 0x0100; // Z\r
787 PicoIn.pad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
788 if(!(movie_data[offs+2] & 0x10)) PicoIn.pad[1] |= 0x0400; // X\r
789 if(!(movie_data[offs+2] & 0x40)) PicoIn.pad[1] |= 0x0100; // Z\r
790 }\r
791}\r
792\r
793static int try_ropen_file(const char *fname, int *time)\r
794{\r
795 struct stat st;\r
796 FILE *f;\r
797\r
798 f = fopen(fname, "rb");\r
799 if (f) {\r
800 if (time != NULL) {\r
801 *time = 0;\r
802 if (fstat(fileno(f), &st) == 0)\r
803 *time = (int)st.st_mtime;\r
804 }\r
805 fclose(f);\r
806 return 1;\r
807 }\r
808 return 0;\r
809}\r
810\r
811char *emu_get_save_fname(int load, int is_sram, int slot, int *time)\r
812{\r
813 char *saveFname = static_buff;\r
814 char ext[16];\r
815\r
816 if (is_sram)\r
817 {\r
818 strcpy(ext, (PicoIn.AHW & PAHW_MCD) ? ".brm" : ".srm");\r
819 romfname_ext(saveFname, sizeof(static_buff),\r
820 (PicoIn.AHW & PAHW_MCD) ? "brm"PATH_SEP : "srm"PATH_SEP, ext);\r
821 if (!load)\r
822 return saveFname;\r
823\r
824 if (try_ropen_file(saveFname, time))\r
825 return saveFname;\r
826\r
827 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
828 if (try_ropen_file(saveFname, time))\r
829 return saveFname;\r
830 }\r
831 else\r
832 {\r
833 const char *ext_main = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds.gz" : ".mds";\r
834 const char *ext_othr = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds" : ".mds.gz";\r
835 ext[0] = 0;\r
836 if (slot > 0 && slot < 10)\r
837 sprintf(ext, ".%i", slot);\r
838 strcat(ext, ext_main);\r
839\r
840 if (!load) {\r
841 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
842 return saveFname;\r
843 }\r
844 else {\r
845 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
846 if (try_ropen_file(saveFname, time))\r
847 return saveFname;\r
848\r
849 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
850 if (try_ropen_file(saveFname, time))\r
851 return saveFname;\r
852\r
853 // try the other ext\r
854 ext[0] = 0;\r
855 if (slot > 0 && slot < 10)\r
856 sprintf(ext, ".%i", slot);\r
857 strcat(ext, ext_othr);\r
858\r
859 romfname_ext(saveFname, sizeof(static_buff), "mds"PATH_SEP, ext);\r
860 if (try_ropen_file(saveFname, time))\r
861 return saveFname;\r
862 }\r
863 }\r
864\r
865 return NULL;\r
866}\r
867\r
868int emu_check_save_file(int slot, int *time)\r
869{\r
870 return emu_get_save_fname(1, 0, slot, time) ? 1 : 0;\r
871}\r
872\r
873int emu_save_load_game(int load, int sram)\r
874{\r
875 int ret = 0;\r
876 char *saveFname;\r
877\r
878 // make save filename\r
879 saveFname = emu_get_save_fname(load, sram, state_slot, NULL);\r
880 if (saveFname == NULL) {\r
881 if (!sram)\r
882 emu_status_msg(load ? "LOAD FAILED (missing file)" : "SAVE FAILED");\r
883 return -1;\r
884 }\r
885\r
886 lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
887\r
888 if (sram)\r
889 {\r
890 FILE *sramFile;\r
891 int sram_size;\r
892 unsigned char *sram_data;\r
893 int truncate = 1;\r
894 if (PicoIn.AHW & PAHW_MCD)\r
895 {\r
896 if (PicoIn.opt & POPT_EN_MCD_RAMCART) {\r
897 sram_size = 0x12000;\r
898 sram_data = Pico.sv.data;\r
899 if (sram_data)\r
900 memcpy(sram_data, Pico_mcd->bram, 0x2000);\r
901 } else {\r
902 sram_size = 0x2000;\r
903 sram_data = Pico_mcd->bram;\r
904 truncate = 0; // the .brm may contain RAM cart data after normal brm\r
905 }\r
906 } else {\r
907 sram_size = Pico.sv.size;\r
908 sram_data = Pico.sv.data;\r
909 }\r
910 if (sram_data == NULL)\r
911 return 0; // cart saves forcefully disabled for this game\r
912\r
913 if (load)\r
914 {\r
915 sramFile = fopen(saveFname, "rb");\r
916 if (!sramFile)\r
917 return -1;\r
918 ret = fread(sram_data, 1, sram_size, sramFile);\r
919 ret = ret > 0 ? 0 : -1;\r
920 fclose(sramFile);\r
921 if ((PicoIn.AHW & PAHW_MCD) && (PicoIn.opt&POPT_EN_MCD_RAMCART))\r
922 memcpy(Pico_mcd->bram, sram_data, 0x2000);\r
923 } else {\r
924 // sram save needs some special processing\r
925 // see if we have anything to save\r
926 for (; sram_size > 0; sram_size--)\r
927 if (sram_data[sram_size-1]) break;\r
928\r
929 if (sram_size) {\r
930 sramFile = fopen(saveFname, truncate ? "wb" : "r+b");\r
931 if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry\r
932 if (!sramFile) return -1;\r
933 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
934 ret = (ret != sram_size) ? -1 : 0;\r
935 fclose(sramFile);\r
936#ifdef __GP2X__\r
937 sync();\r
938#endif\r
939 }\r
940 }\r
941 return ret;\r
942 }\r
943 else\r
944 {\r
945 ret = PicoState(saveFname, !load);\r
946 if (!ret) {\r
947#ifdef __GP2X__\r
948 if (!load) sync();\r
949#endif\r
950 emu_status_msg(load ? "STATE LOADED" : "STATE SAVED");\r
951 } else {\r
952 emu_status_msg(load ? "LOAD FAILED" : "SAVE FAILED");\r
953 ret = -1;\r
954 }\r
955\r
956 return ret;\r
957 }\r
958}\r
959\r
960void emu_set_fastforward(int set_on)\r
961{\r
962 static void *set_PsndOut = NULL;\r
963 static int set_Frameskip, set_EmuOpt, is_on = 0;\r
964\r
965 if (set_on && !is_on) {\r
966 set_PsndOut = PicoIn.sndOut;\r
967 set_Frameskip = currentConfig.Frameskip;\r
968 set_EmuOpt = currentConfig.EmuOpt;\r
969 PicoIn.sndOut = NULL;\r
970 currentConfig.Frameskip = 8;\r
971 currentConfig.EmuOpt &= ~4;\r
972 currentConfig.EmuOpt |= 0x40000;\r
973 is_on = 1;\r
974 emu_status_msg("FAST FORWARD");\r
975 }\r
976 else if (!set_on && is_on) {\r
977 PicoIn.sndOut = set_PsndOut;\r
978 currentConfig.Frameskip = set_Frameskip;\r
979 currentConfig.EmuOpt = set_EmuOpt;\r
980 PsndRerate(1);\r
981 is_on = 0;\r
982 // mainly to unbreak pcm\r
983 if (PicoIn.AHW & PAHW_MCD)\r
984 pcd_state_loaded();\r
985 }\r
986}\r
987\r
988static void emu_tray_open(void)\r
989{\r
990 engineState = PGS_TrayMenu;\r
991}\r
992\r
993static void emu_tray_close(void)\r
994{\r
995 emu_status_msg("CD tray closed.");\r
996}\r
997\r
998void emu_32x_startup(void)\r
999{\r
1000 plat_video_toggle_renderer(0, 0); // HACK\r
1001 system_announce();\r
1002}\r
1003\r
1004void emu_reset_game(void)\r
1005{\r
1006 PicoReset();\r
1007 reset_timing = 1;\r
1008}\r
1009\r
1010void run_events_pico(unsigned int events)\r
1011{\r
1012 int lim_x;\r
1013\r
1014 if (events & PEV_PICO_SWINP) {\r
1015 pico_inp_mode++;\r
1016 if (pico_inp_mode > 2)\r
1017 pico_inp_mode = 0;\r
1018 switch (pico_inp_mode) {\r
1019 case 2: emu_status_msg("Input: Pen on Pad"); break;\r
1020 case 1: emu_status_msg("Input: Pen on Storyware"); break;\r
1021 case 0: emu_status_msg("Input: Joystick");\r
1022 PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
1023 break;\r
1024 }\r
1025 }\r
1026 if (events & PEV_PICO_PPREV) {\r
1027 PicoPicohw.page--;\r
1028 if (PicoPicohw.page < 0)\r
1029 PicoPicohw.page = 0;\r
1030 emu_status_msg("Page %i", PicoPicohw.page);\r
1031 }\r
1032 if (events & PEV_PICO_PNEXT) {\r
1033 PicoPicohw.page++;\r
1034 if (PicoPicohw.page > 6)\r
1035 PicoPicohw.page = 6;\r
1036 emu_status_msg("Page %i", PicoPicohw.page);\r
1037 }\r
1038\r
1039 if (pico_inp_mode == 0)\r
1040 return;\r
1041\r
1042 /* handle other input modes */\r
1043 if (PicoIn.pad[0] & 1) pico_pen_y--;\r
1044 if (PicoIn.pad[0] & 2) pico_pen_y++;\r
1045 if (PicoIn.pad[0] & 4) pico_pen_x--;\r
1046 if (PicoIn.pad[0] & 8) pico_pen_x++;\r
1047 PicoIn.pad[0] &= ~0x0f; // release UDLR\r
1048\r
1049 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
1050 if (pico_pen_y < 8)\r
1051 pico_pen_y = 8;\r
1052 if (pico_pen_y > 224 - PICO_PEN_ADJUST_Y)\r
1053 pico_pen_y = 224 - PICO_PEN_ADJUST_Y;\r
1054 if (pico_pen_x < 0)\r
1055 pico_pen_x = 0;\r
1056 if (pico_pen_x > lim_x - PICO_PEN_ADJUST_X)\r
1057 pico_pen_x = lim_x - PICO_PEN_ADJUST_X;\r
1058\r
1059 PicoPicohw.pen_pos[0] = pico_pen_x;\r
1060 if (!(Pico.video.reg[12] & 1))\r
1061 PicoPicohw.pen_pos[0] += pico_pen_x / 4;\r
1062 PicoPicohw.pen_pos[0] += 0x3c;\r
1063 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
1064}\r
1065\r
1066static void do_turbo(unsigned short *pad, int acts)\r
1067{\r
1068 static int turbo_pad = 0;\r
1069 static unsigned char turbo_cnt[3] = { 0, 0, 0 };\r
1070 int inc = currentConfig.turbo_rate * 2;\r
1071\r
1072 if (acts & 0x1000) {\r
1073 turbo_cnt[0] += inc;\r
1074 if (turbo_cnt[0] >= 60)\r
1075 turbo_pad ^= 0x10, turbo_cnt[0] = 0;\r
1076 }\r
1077 if (acts & 0x2000) {\r
1078 turbo_cnt[1] += inc;\r
1079 if (turbo_cnt[1] >= 60)\r
1080 turbo_pad ^= 0x20, turbo_cnt[1] = 0;\r
1081 }\r
1082 if (acts & 0x4000) {\r
1083 turbo_cnt[2] += inc;\r
1084 if (turbo_cnt[2] >= 60)\r
1085 turbo_pad ^= 0x40, turbo_cnt[2] = 0;\r
1086 }\r
1087 *pad |= turbo_pad & (acts >> 8);\r
1088}\r
1089\r
1090static void run_events_ui(unsigned int which)\r
1091{\r
1092 if (which & (PEV_STATE_LOAD|PEV_STATE_SAVE))\r
1093 {\r
1094 int do_it = 1;\r
1095 if ( emu_check_save_file(state_slot, NULL) &&\r
1096 (((which & PEV_STATE_LOAD) && (currentConfig.confirm_save & EOPT_CONFIRM_LOAD)) ||\r
1097 ((which & PEV_STATE_SAVE) && (currentConfig.confirm_save & EOPT_CONFIRM_SAVE))) )\r
1098 {\r
1099 const char *nm;\r
1100 char tmp[64];\r
1101 int keys, len;\r
1102\r
1103 strcpy(tmp, (which & PEV_STATE_LOAD) ? "LOAD STATE? " : "OVERWRITE SAVE? ");\r
1104 len = strlen(tmp);\r
1105 nm = in_get_key_name(-1, -PBTN_MOK);\r
1106 snprintf(tmp + len, sizeof(tmp) - len, "(%s=yes, ", nm);\r
1107 len = strlen(tmp);\r
1108 nm = in_get_key_name(-1, -PBTN_MBACK);\r
1109 snprintf(tmp + len, sizeof(tmp) - len, "%s=no)", nm);\r
1110\r
1111 plat_status_msg_busy_first(tmp);\r
1112\r
1113 in_set_config_int(0, IN_CFG_BLOCKING, 1);\r
1114 while (in_menu_wait_any(NULL, 50) & (PBTN_MOK | PBTN_MBACK))\r
1115 ;\r
1116 while ( !((keys = in_menu_wait_any(NULL, 50)) & (PBTN_MOK | PBTN_MBACK)))\r
1117 ;\r
1118 if (keys & PBTN_MBACK)\r
1119 do_it = 0;\r
1120 while (in_menu_wait_any(NULL, 50) & (PBTN_MOK | PBTN_MBACK))\r
1121 ;\r
1122 in_set_config_int(0, IN_CFG_BLOCKING, 0);\r
1123 }\r
1124 if (do_it) {\r
1125 plat_status_msg_busy_first((which & PEV_STATE_LOAD) ? "LOADING STATE" : "SAVING STATE");\r
1126 PicoStateProgressCB = plat_status_msg_busy_next;\r
1127 emu_save_load_game((which & PEV_STATE_LOAD) ? 1 : 0, 0);\r
1128 PicoStateProgressCB = NULL;\r
1129 }\r
1130 }\r
1131 if (which & PEV_SWITCH_RND)\r
1132 {\r
1133 plat_video_toggle_renderer(1, 0);\r
1134 }\r
1135 if (which & (PEV_SSLOT_PREV|PEV_SSLOT_NEXT))\r
1136 {\r
1137 if (which & PEV_SSLOT_PREV) {\r
1138 state_slot -= 1;\r
1139 if (state_slot < 0)\r
1140 state_slot = 9;\r
1141 } else {\r
1142 state_slot += 1;\r
1143 if (state_slot > 9)\r
1144 state_slot = 0;\r
1145 }\r
1146\r
1147 emu_status_msg("SAVE SLOT %i [%s]", state_slot,\r
1148 emu_check_save_file(state_slot, NULL) ? "USED" : "FREE");\r
1149 }\r
1150 if (which & PEV_RESET)\r
1151 emu_reset_game();\r
1152 if (which & PEV_MENU)\r
1153 engineState = PGS_Menu;\r
1154}\r
1155\r
1156void emu_update_input(void)\r
1157{\r
1158 static int prev_events = 0;\r
1159 int actions[IN_BINDTYPE_COUNT] = { 0, };\r
1160 int pl_actions[2];\r
1161 int events;\r
1162\r
1163 in_update(actions);\r
1164\r
1165 pl_actions[0] = actions[IN_BINDTYPE_PLAYER12];\r
1166 pl_actions[1] = actions[IN_BINDTYPE_PLAYER12] >> 16;\r
1167\r
1168 PicoIn.pad[0] = pl_actions[0] & 0xfff;\r
1169 PicoIn.pad[1] = pl_actions[1] & 0xfff;\r
1170\r
1171 if (pl_actions[0] & 0x7000)\r
1172 do_turbo(&PicoIn.pad[0], pl_actions[0]);\r
1173 if (pl_actions[1] & 0x7000)\r
1174 do_turbo(&PicoIn.pad[1], pl_actions[1]);\r
1175\r
1176 events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1177\r
1178 // volume is treated in special way and triggered every frame\r
1179 if (events & (PEV_VOL_DOWN|PEV_VOL_UP))\r
1180 plat_update_volume(1, events & PEV_VOL_UP);\r
1181\r
1182 if ((events ^ prev_events) & PEV_FF) {\r
1183 emu_set_fastforward(events & PEV_FF);\r
1184 plat_update_volume(0, 0);\r
1185 reset_timing = 1;\r
1186 }\r
1187\r
1188 events &= ~prev_events;\r
1189\r
1190 if (PicoIn.AHW == PAHW_PICO)\r
1191 run_events_pico(events);\r
1192 if (events)\r
1193 run_events_ui(events);\r
1194 if (movie_data)\r
1195 update_movie();\r
1196\r
1197 prev_events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1198}\r
1199\r
1200static void mkdir_path(char *path_with_reserve, int pos, const char *name)\r
1201{\r
1202 strcpy(path_with_reserve + pos, name);\r
1203 if (plat_is_dir(path_with_reserve))\r
1204 return;\r
1205 if (mkdir(path_with_reserve, 0777) < 0)\r
1206 lprintf("failed to create: %s\n", path_with_reserve);\r
1207}\r
1208\r
1209void emu_cmn_forced_frame(int no_scale, int do_emu)\r
1210{\r
1211 int po_old = PicoIn.opt;\r
1212 int y;\r
1213\r
1214 for (y = 0; y < g_screen_height; y++)\r
1215 memset32((short *)g_screen_ptr + g_screen_ppitch * y, 0,\r
1216 g_screen_width * 2 / 4);\r
1217\r
1218 PicoIn.opt &= ~POPT_ALT_RENDERER;\r
1219 PicoIn.opt |= POPT_ACC_SPRITES;\r
1220 if (!no_scale)\r
1221 PicoIn.opt |= POPT_EN_SOFTSCALE;\r
1222\r
1223 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
1224 Pico.m.dirtyPal = 1;\r
1225 if (do_emu)\r
1226 PicoFrame();\r
1227 else\r
1228 PicoFrameDrawOnly();\r
1229\r
1230 PicoIn.opt = po_old;\r
1231}\r
1232\r
1233void emu_init(void)\r
1234{\r
1235 char path[512];\r
1236 int pos;\r
1237\r
1238#if 0\r
1239 // FIXME: handle through menu, etc\r
1240 FILE *f;\r
1241 f = fopen("32X_M_BIOS.BIN", "rb");\r
1242 p32x_bios_m = malloc(2048);\r
1243 fread(p32x_bios_m, 1, 2048, f);\r
1244 fclose(f);\r
1245 f = fopen("32X_S_BIOS.BIN", "rb");\r
1246 p32x_bios_s = malloc(1024);\r
1247 fread(p32x_bios_s, 1, 1024, f);\r
1248 fclose(f);\r
1249#endif\r
1250\r
1251 /* make dirs for saves */\r
1252 pos = plat_get_root_dir(path, sizeof(path) - 4);\r
1253 mkdir_path(path, pos, "mds");\r
1254 mkdir_path(path, pos, "srm");\r
1255 mkdir_path(path, pos, "brm");\r
1256 mkdir_path(path, pos, "cfg");\r
1257\r
1258 pprof_init();\r
1259\r
1260 make_config_cfg(path);\r
1261 config_readlrom(path);\r
1262\r
1263 PicoInit();\r
1264 PicoIn.osdMessage = plat_status_msg_busy_next;\r
1265 PicoIn.mcdTrayOpen = emu_tray_open;\r
1266 PicoIn.mcdTrayClose = emu_tray_close;\r
1267\r
1268 sndout_init();\r
1269}\r
1270\r
1271void emu_finish(void)\r
1272{\r
1273 // save SRAM\r
1274 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && Pico.sv.changed) {\r
1275 emu_save_load_game(0, 1);\r
1276 Pico.sv.changed = 0;\r
1277 }\r
1278\r
1279 if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {\r
1280 char cfg[512];\r
1281 make_config_cfg(cfg);\r
1282 config_writelrom(cfg);\r
1283#ifdef __GP2X__\r
1284 sync();\r
1285#endif\r
1286 }\r
1287\r
1288 pprof_finish();\r
1289\r
1290 PicoExit();\r
1291 sndout_exit();\r
1292}\r
1293\r
1294static void snd_write_nonblocking(int len)\r
1295{\r
1296 sndout_write_nb(PicoIn.sndOut, len);\r
1297}\r
1298\r
1299void emu_sound_start(void)\r
1300{\r
1301 PicoIn.sndOut = NULL;\r
1302\r
1303 if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
1304 {\r
1305 int is_stereo = (PicoIn.opt & POPT_EN_STEREO) ? 1 : 0;\r
1306\r
1307 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
1308\r
1309 printf("starting audio: %i len: %i stereo: %i, pal: %i\n",\r
1310 PicoIn.sndRate, Pico.snd.len, is_stereo, Pico.m.pal);\r
1311 sndout_start(PicoIn.sndRate, is_stereo);\r
1312 PicoIn.writeSound = snd_write_nonblocking;\r
1313 plat_update_volume(0, 0);\r
1314 memset(sndBuffer, 0, sizeof(sndBuffer));\r
1315 PicoIn.sndOut = sndBuffer;\r
1316 }\r
1317}\r
1318\r
1319void emu_sound_stop(void)\r
1320{\r
1321 sndout_stop();\r
1322}\r
1323\r
1324void emu_sound_wait(void)\r
1325{\r
1326 sndout_wait();\r
1327}\r
1328\r
1329static void emu_loop_prep(void)\r
1330{\r
1331 static int pal_old = -1;\r
1332 static int filter_old = -1;\r
1333\r
1334 if (currentConfig.CPUclock != plat_target_cpu_clock_get())\r
1335 plat_target_cpu_clock_set(currentConfig.CPUclock);\r
1336\r
1337 if (Pico.m.pal != pal_old) {\r
1338 plat_target_lcdrate_set(Pico.m.pal);\r
1339 pal_old = Pico.m.pal;\r
1340 }\r
1341\r
1342 if (currentConfig.filter != filter_old) {\r
1343 plat_target_hwfilter_set(currentConfig.filter);\r
1344 filter_old = currentConfig.filter;\r
1345 }\r
1346\r
1347 plat_target_gamma_set(currentConfig.gamma, 0);\r
1348\r
1349 pemu_loop_prep();\r
1350}\r
1351\r
1352/* our tick here is 1 us right now */\r
1353#define ms_to_ticks(x) (unsigned int)(x * 1000)\r
1354#define get_ticks() plat_get_ticks_us()\r
1355\r
1356void emu_loop(void)\r
1357{\r
1358 int frames_done, frames_shown; /* actual frames for fps counter */\r
1359 int target_frametime_x3;\r
1360 unsigned int timestamp_x3 = 0;\r
1361 unsigned int timestamp_aim_x3 = 0;\r
1362 unsigned int timestamp_fps_x3 = 0;\r
1363 char *notice_msg = NULL;\r
1364 char fpsbuff[24];\r
1365 int fskip_cnt = 0;\r
1366\r
1367 fpsbuff[0] = 0;\r
1368\r
1369 PicoLoopPrepare();\r
1370\r
1371 plat_video_loop_prepare();\r
1372 emu_loop_prep();\r
1373 pemu_sound_start();\r
1374\r
1375 /* number of ticks per frame */\r
1376 if (Pico.m.pal)\r
1377 target_frametime_x3 = 3 * ms_to_ticks(1000) / 50;\r
1378 else\r
1379 target_frametime_x3 = 3 * ms_to_ticks(1000) / 60;\r
1380\r
1381 reset_timing = 1;\r
1382 frames_done = frames_shown = 0;\r
1383\r
1384 /* loop with resync every 1 sec. */\r
1385 while (engineState == PGS_Running)\r
1386 {\r
1387 int skip = 0;\r
1388 int diff;\r
1389\r
1390 pprof_start(main);\r
1391\r
1392 if (reset_timing) {\r
1393 reset_timing = 0;\r
1394 plat_video_wait_vsync();\r
1395 timestamp_aim_x3 = get_ticks() * 3;\r
1396 timestamp_fps_x3 = timestamp_aim_x3;\r
1397 fskip_cnt = 0;\r
1398 }\r
1399 else if (currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) {\r
1400 timestamp_aim_x3 = get_ticks() * 3;\r
1401 }\r
1402\r
1403 timestamp_x3 = get_ticks() * 3;\r
1404\r
1405 // show notice_msg message?\r
1406 if (notice_msg_time != 0)\r
1407 {\r
1408 static int noticeMsgSum;\r
1409 if (timestamp_x3 - ms_to_ticks(notice_msg_time) * 3\r
1410 > ms_to_ticks(STATUS_MSG_TIMEOUT) * 3)\r
1411 {\r
1412 notice_msg_time = 0;\r
1413 plat_status_msg_clear();\r
1414 plat_video_flip();\r
1415 plat_status_msg_clear(); /* Do it again in case of double buffering */\r
1416 notice_msg = NULL;\r
1417 }\r
1418 else {\r
1419 int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];\r
1420 if (sum != noticeMsgSum) {\r
1421 plat_status_msg_clear();\r
1422 noticeMsgSum = sum;\r
1423 }\r
1424 notice_msg = noticeMsg;\r
1425 }\r
1426 }\r
1427\r
1428 // second changed?\r
1429 if (timestamp_x3 - timestamp_fps_x3 >= ms_to_ticks(1000) * 3)\r
1430 {\r
1431#ifdef BENCHMARK\r
1432 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1433 if (++bench == 10) {\r
1434 bench = 0;\r
1435 bench_fps_s = bench_fps;\r
1436 bf[bfp++ & 3] = bench_fps;\r
1437 bench_fps = 0;\r
1438 }\r
1439 bench_fps += frames_shown;\r
1440 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1441 printf("%s\n", fpsbuff);\r
1442#else\r
1443 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
1444 snprintf(fpsbuff, 8, "%02i/%02i ", frames_shown, frames_done);\r
1445#endif\r
1446 frames_shown = frames_done = 0;\r
1447 timestamp_fps_x3 += ms_to_ticks(1000) * 3;\r
1448 }\r
1449#ifdef PFRAMES\r
1450 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
1451#endif\r
1452\r
1453 diff = timestamp_aim_x3 - timestamp_x3;\r
1454\r
1455 if (currentConfig.Frameskip >= 0) // frameskip enabled (or 0)\r
1456 {\r
1457 if (fskip_cnt < currentConfig.Frameskip) {\r
1458 fskip_cnt++;\r
1459 skip = 1;\r
1460 }\r
1461 else {\r
1462 fskip_cnt = 0;\r
1463 }\r
1464 }\r
1465 else if (diff < -target_frametime_x3)\r
1466 {\r
1467 /* no time left for this frame - skip */\r
1468 /* limit auto frameskip to 8 */\r
1469 if (frames_done / 8 <= frames_shown)\r
1470 skip = 1;\r
1471 }\r
1472\r
1473 // don't go in debt too much\r
1474 while (diff < -target_frametime_x3 * 3) {\r
1475 timestamp_aim_x3 += target_frametime_x3;\r
1476 diff = timestamp_aim_x3 - timestamp_x3;\r
1477 }\r
1478\r
1479 emu_update_input();\r
1480 if (skip) {\r
1481 int do_audio = diff > -target_frametime_x3 * 2;\r
1482 PicoIn.skipFrame = do_audio ? 1 : 2;\r
1483 PicoFrame();\r
1484 PicoIn.skipFrame = 0;\r
1485 }\r
1486 else {\r
1487 PicoFrame();\r
1488 pemu_finalize_frame(fpsbuff, notice_msg);\r
1489 frames_shown++;\r
1490 }\r
1491 frames_done++;\r
1492 timestamp_aim_x3 += target_frametime_x3;\r
1493\r
1494 if (!skip && !flip_after_sync)\r
1495 plat_video_flip();\r
1496\r
1497 /* frame limiter */\r
1498 if (!skip && !reset_timing\r
1499 && !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))\r
1500 {\r
1501 unsigned int timestamp = get_ticks();\r
1502 diff = timestamp_aim_x3 - timestamp * 3;\r
1503\r
1504 // sleep or vsync if we are still too fast\r
1505 if (diff > target_frametime_x3 && (currentConfig.EmuOpt & EOPT_VSYNC)) {\r
1506 // we are too fast\r
1507 plat_video_wait_vsync();\r
1508 timestamp = get_ticks();\r
1509 diff = timestamp * 3 - timestamp_aim_x3;\r
1510 }\r
1511 if (diff > target_frametime_x3) {\r
1512 // still too fast\r
1513 plat_wait_till_us(timestamp + (diff - target_frametime_x3) / 3);\r
1514 }\r
1515 }\r
1516\r
1517 if (!skip && flip_after_sync)\r
1518 plat_video_flip();\r
1519\r
1520 pprof_end(main);\r
1521 }\r
1522\r
1523 emu_set_fastforward(0);\r
1524\r
1525 // save SRAM\r
1526 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && Pico.sv.changed) {\r
1527 plat_status_msg_busy_first("Writing SRAM/BRAM...");\r
1528 emu_save_load_game(0, 1);\r
1529 Pico.sv.changed = 0;\r
1530 }\r
1531\r
1532 pemu_loop_end();\r
1533 emu_sound_stop();\r
1534}\r
fast MegaDrive/MegaCD/32X emulator