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distinguish VR SVP from 32X version
[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 <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#ifndef _WIN32\r
32#define PATH_SEP "/"\r
33#define PATH_SEP_C '/'\r
34#else\r
35#define PATH_SEP "\\"\r
36#define PATH_SEP_C '\\'\r
37#endif\r
38\r
39#define STATUS_MSG_TIMEOUT 2000\r
40\r
41void *g_screen_ptr;\r
42\r
43int g_screen_width = 320;\r
44int g_screen_height = 240;\r
45\r
46char *PicoConfigFile = "config.cfg";\r
47currentConfig_t currentConfig, defaultConfig;\r
48int state_slot = 0;\r
49int config_slot = 0, config_slot_current = 0;\r
50int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
51int pico_inp_mode;\r
52int flip_after_sync;\r
53int engineState = PGS_Menu;\r
54\r
55static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
56\r
57/* tmp buff to reduce stack usage for plats with small stack */\r
58static char static_buff[512];\r
59const char *rom_fname_reload;\r
60char rom_fname_loaded[512];\r
61int reset_timing = 0;\r
62static unsigned int notice_msg_time; /* when started showing */\r
63static char noticeMsg[40];\r
64\r
65unsigned char *movie_data = NULL;\r
66static int movie_size = 0;\r
67\r
68\r
69/* don't use tolower() for easy old glibc binary compatibility */\r
70static void strlwr_(char *string)\r
71{\r
72 char *p;\r
73 for (p = string; *p; p++)\r
74 if ('A' <= *p && *p <= 'Z')\r
75 *p += 'a' - 'A';\r
76}\r
77\r
78static int try_rfn_cut(char *fname)\r
79{\r
80 FILE *tmp;\r
81 char *p;\r
82\r
83 p = fname + strlen(fname) - 1;\r
84 for (; p > fname; p--)\r
85 if (*p == '.') break;\r
86 *p = 0;\r
87\r
88 if((tmp = fopen(fname, "rb"))) {\r
89 fclose(tmp);\r
90 return 1;\r
91 }\r
92 return 0;\r
93}\r
94\r
95static void get_ext(const char *file, char *ext)\r
96{\r
97 const char *p;\r
98\r
99 p = file + strlen(file) - 4;\r
100 if (p < file) p = file;\r
101 strncpy(ext, p, 4);\r
102 ext[4] = 0;\r
103 strlwr_(ext);\r
104}\r
105\r
106static void fname_ext(char *dst, int dstlen, const char *prefix, const char *ext, const char *fname)\r
107{\r
108 int prefix_len = 0;\r
109 const char *p;\r
110\r
111 *dst = 0;\r
112 if (prefix) {\r
113 int len = plat_get_root_dir(dst, dstlen);\r
114 strcpy(dst + len, prefix);\r
115 prefix_len = len + strlen(prefix);\r
116 }\r
117\r
118 p = fname + strlen(fname) - 1;\r
119 for (; p >= fname && *p != PATH_SEP_C; p--)\r
120 ;\r
121 p++;\r
122 strncpy(dst + prefix_len, p, dstlen - prefix_len - 1);\r
123\r
124 dst[dstlen - 8] = 0;\r
125 if (dst[strlen(dst) - 4] == '.')\r
126 dst[strlen(dst) - 4] = 0;\r
127 if (ext)\r
128 strcat(dst, ext);\r
129}\r
130\r
131static void romfname_ext(char *dst, int dstlen, const char *prefix, const char *ext)\r
132{\r
133 fname_ext(dst, dstlen, prefix, ext, rom_fname_loaded);\r
134}\r
135\r
136void emu_status_msg(const char *format, ...)\r
137{\r
138 va_list vl;\r
139 int ret;\r
140\r
141 va_start(vl, format);\r
142 ret = vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);\r
143 va_end(vl);\r
144\r
145 /* be sure old text gets overwritten */\r
146 for (; ret < 28; ret++)\r
147 noticeMsg[ret] = ' ';\r
148 noticeMsg[ret] = 0;\r
149\r
150 notice_msg_time = plat_get_ticks_ms();\r
151}\r
152\r
153static const char * const biosfiles_us[] = {\r
154 "us_scd1_9210", "us_scd2_9306", "SegaCDBIOS9303", "bios_CD_U"\r
155};\r
156static const char * const biosfiles_eu[] = {\r
157 "eu_mcd1_9210", "eu_mcd2_9306", "eu_mcd2_9303", "bios_CD_E"\r
158};\r
159static const char * const biosfiles_jp[] = {\r
160 "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"\r
161};\r
162\r
163static const char *find_bios(int *region, const char *cd_fname)\r
164{\r
165 int i, count;\r
166 const char * const *files;\r
167 FILE *f = NULL;\r
168 int ret;\r
169\r
170 // we need to have config loaded at this point\r
171 ret = emu_read_config(cd_fname, 0);\r
172 if (!ret) emu_read_config(NULL, 0);\r
173\r
174 if (PicoRegionOverride) {\r
175 *region = PicoRegionOverride;\r
176 lprintf("override region to %s\n", *region != 4 ?\r
177 (*region == 8 ? "EU" : "JAP") : "USA");\r
178 }\r
179\r
180 if (*region == 4) { // US\r
181 files = biosfiles_us;\r
182 count = sizeof(biosfiles_us) / sizeof(char *);\r
183 } else if (*region == 8) { // EU\r
184 files = biosfiles_eu;\r
185 count = sizeof(biosfiles_eu) / sizeof(char *);\r
186 } else if (*region == 1 || *region == 2) {\r
187 files = biosfiles_jp;\r
188 count = sizeof(biosfiles_jp) / sizeof(char *);\r
189 } else {\r
190 return 0;\r
191 }\r
192\r
193 for (i = 0; i < count; i++)\r
194 {\r
195 emu_make_path(static_buff, files[i], sizeof(static_buff) - 4);\r
196 strcat(static_buff, ".bin");\r
197 f = fopen(static_buff, "rb");\r
198 if (f) break;\r
199\r
200 static_buff[strlen(static_buff) - 4] = 0;\r
201 strcat(static_buff, ".zip");\r
202 f = fopen(static_buff, "rb");\r
203 if (f) break;\r
204 }\r
205\r
206 if (f) {\r
207 lprintf("using bios: %s\n", static_buff);\r
208 fclose(f);\r
209 return static_buff;\r
210 } else {\r
211 sprintf(static_buff, "no %s BIOS files found, read docs",\r
212 *region != 4 ? (*region == 8 ? "EU" : "JAP") : "USA");\r
213 menu_update_msg(static_buff);\r
214 return NULL;\r
215 }\r
216}\r
217\r
218/* check if the name begins with BIOS name */\r
219/*\r
220static int emu_isBios(const char *name)\r
221{\r
222 int i;\r
223 for (i = 0; i < sizeof(biosfiles_us)/sizeof(biosfiles_us[0]); i++)\r
224 if (strstr(name, biosfiles_us[i]) != NULL) return 1;\r
225 for (i = 0; i < sizeof(biosfiles_eu)/sizeof(biosfiles_eu[0]); i++)\r
226 if (strstr(name, biosfiles_eu[i]) != NULL) return 1;\r
227 for (i = 0; i < sizeof(biosfiles_jp)/sizeof(biosfiles_jp[0]); i++)\r
228 if (strstr(name, biosfiles_jp[i]) != NULL) return 1;\r
229 return 0;\r
230}\r
231*/\r
232\r
233static int extract_text(char *dest, const unsigned char *src, int len, int swab)\r
234{\r
235 char *p = dest;\r
236 int i;\r
237\r
238 if (swab) swab = 1;\r
239\r
240 for (i = len - 1; i >= 0; i--)\r
241 {\r
242 if (src[i^swab] != ' ') break;\r
243 }\r
244 len = i + 1;\r
245\r
246 for (i = 0; i < len; i++)\r
247 {\r
248 unsigned char s = src[i^swab];\r
249 if (s >= 0x20 && s < 0x7f && s != '#' && s != '|' &&\r
250 s != '[' && s != ']' && s != '\\')\r
251 {\r
252 *p++ = s;\r
253 }\r
254 else\r
255 {\r
256 sprintf(p, "\\%02x", s);\r
257 p += 3;\r
258 }\r
259 }\r
260\r
261 return p - dest;\r
262}\r
263\r
264static char *emu_make_rom_id(const char *fname)\r
265{\r
266 static char id_string[3+0xe*3+0x3*3+0x30*3+3];\r
267 int pos, swab = 1;\r
268\r
269 if (PicoAHW & PAHW_MCD) {\r
270 strcpy(id_string, "CD|");\r
271 swab = 0;\r
272 }\r
273 else if (PicoAHW & PAHW_SMS)\r
274 strcpy(id_string, "MS|");\r
275 else strcpy(id_string, "MD|");\r
276 pos = 3;\r
277\r
278 if (!(PicoAHW & PAHW_SMS)) {\r
279 pos += extract_text(id_string + pos, media_id_header + 0x80, 0x0e, swab); // serial\r
280 id_string[pos] = '|'; pos++;\r
281 pos += extract_text(id_string + pos, media_id_header + 0xf0, 0x03, swab); // region\r
282 id_string[pos] = '|'; pos++;\r
283 pos += extract_text(id_string + pos, media_id_header + 0x50, 0x30, swab); // overseas name\r
284 id_string[pos] = 0;\r
285 if (pos > 5)\r
286 return id_string;\r
287 pos = 3;\r
288 }\r
289\r
290 // can't find name in ROM, use filename\r
291 fname_ext(id_string + 3, sizeof(id_string) - 3, NULL, NULL, fname);\r
292\r
293 return id_string;\r
294}\r
295\r
296// buffer must be at least 150 byte long\r
297void emu_get_game_name(char *str150)\r
298{\r
299 int ret, swab = (PicoAHW & PAHW_MCD) ? 0 : 1;\r
300 char *s, *d;\r
301\r
302 ret = extract_text(str150, media_id_header + 0x50, 0x30, swab); // overseas name\r
303\r
304 for (s = d = str150 + 1; s < str150+ret; s++)\r
305 {\r
306 if (*s == 0) break;\r
307 if (*s != ' ' || d[-1] != ' ')\r
308 *d++ = *s;\r
309 }\r
310 *d = 0;\r
311}\r
312\r
313static void system_announce(void)\r
314{\r
315 const char *sys_name, *tv_standard, *extra = "";\r
316 int fps;\r
317\r
318 if (PicoAHW & PAHW_SMS) {\r
319 sys_name = "Master System";\r
320#ifdef NO_SMS\r
321 extra = " [no support]";\r
322#endif\r
323 } else if (PicoAHW & PAHW_PICO) {\r
324 sys_name = "Pico";\r
325 } else if (PicoAHW & PAHW_MCD) {\r
326 sys_name = "Mega CD";\r
327 if ((Pico.m.hardware & 0xc0) == 0x80)\r
328 sys_name = "Sega CD";\r
329 } else if (PicoAHW & PAHW_32X) {\r
330 sys_name = "32X";\r
331 } else {\r
332 sys_name = "MegaDrive";\r
333 if ((Pico.m.hardware & 0xc0) == 0x80)\r
334 sys_name = "Genesis";\r
335 }\r
336 tv_standard = Pico.m.pal ? "PAL" : "NTSC";\r
337 fps = Pico.m.pal ? 50 : 60;\r
338\r
339 emu_status_msg("%s %s / %dFPS%s", tv_standard, sys_name, fps, extra);\r
340}\r
341\r
342static void do_region_override(const char *media_fname)\r
343{\r
344 // we only need to override region if config tells us so\r
345 int ret = emu_read_config(media_fname, 0);\r
346 if (!ret) emu_read_config(NULL, 0);\r
347}\r
348\r
349int emu_reload_rom(const char *rom_fname_in)\r
350{\r
351 char *rom_fname = NULL;\r
352 char ext[5];\r
353 enum media_type_e media_type;\r
354 int menu_romload_started = 0;\r
355 char carthw_path[512];\r
356 int retval = 0;\r
357\r
358 lprintf("emu_ReloadRom(%s)\n", rom_fname_in);\r
359\r
360 rom_fname = strdup(rom_fname_in);\r
361 if (rom_fname == NULL)\r
362 return 0;\r
363\r
364 get_ext(rom_fname, ext);\r
365\r
366 // early cleanup\r
367 PicoPatchUnload();\r
368 if (movie_data) {\r
369 free(movie_data);\r
370 movie_data = 0;\r
371 }\r
372\r
373 if (!strcmp(ext, ".gmv"))\r
374 {\r
375 // check for both gmv and rom\r
376 int dummy;\r
377 FILE *movie_file = fopen(rom_fname, "rb");\r
378 if (!movie_file) {\r
379 menu_update_msg("Failed to open movie.");\r
380 goto out;\r
381 }\r
382 fseek(movie_file, 0, SEEK_END);\r
383 movie_size = ftell(movie_file);\r
384 fseek(movie_file, 0, SEEK_SET);\r
385 if (movie_size < 64+3) {\r
386 menu_update_msg("Invalid GMV file.");\r
387 fclose(movie_file);\r
388 goto out;\r
389 }\r
390 movie_data = malloc(movie_size);\r
391 if (movie_data == NULL) {\r
392 menu_update_msg("low memory.");\r
393 fclose(movie_file);\r
394 goto out;\r
395 }\r
396 dummy = fread(movie_data, 1, movie_size, movie_file);\r
397 fclose(movie_file);\r
398 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
399 menu_update_msg("Invalid GMV file.");\r
400 goto out;\r
401 }\r
402 dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
403 if (!dummy) {\r
404 menu_update_msg("Could't find a ROM for movie.");\r
405 goto out;\r
406 }\r
407 get_ext(rom_fname, ext);\r
408 lprintf("gmv loaded for %s\n", rom_fname);\r
409 }\r
410 else if (!strcmp(ext, ".pat"))\r
411 {\r
412 int dummy;\r
413 PicoPatchLoad(rom_fname);\r
414 dummy = try_rfn_cut(rom_fname) || try_rfn_cut(rom_fname);\r
415 if (!dummy) {\r
416 menu_update_msg("Could't find a ROM to patch.");\r
417 goto out;\r
418 }\r
419 get_ext(rom_fname, ext);\r
420 }\r
421\r
422 menu_romload_prepare(rom_fname); // also CD load\r
423 menu_romload_started = 1;\r
424\r
425 emu_make_path(carthw_path, "carthw.cfg", sizeof(carthw_path));\r
426\r
427 media_type = PicoLoadMedia(rom_fname, carthw_path,\r
428 find_bios, do_region_override);\r
429\r
430 switch (media_type) {\r
431 case PM_BAD_DETECT:\r
432 menu_update_msg("Not a ROM/CD img selected.");\r
433 goto out;\r
434 case PM_BAD_CD:\r
435 menu_update_msg("Invalid CD image");\r
436 goto out;\r
437 case PM_BAD_CD_NO_BIOS:\r
438 // find_bios() prints a message\r
439 goto out;\r
440 case PM_ERROR:\r
441 menu_update_msg("Load error");\r
442 goto out;\r
443 default:\r
444 break;\r
445 }\r
446\r
447 // make quirks visible in UI\r
448 if (PicoQuirks & PQUIRK_FORCE_6BTN)\r
449 currentConfig.input_dev0 = PICO_INPUT_PAD_6BTN;\r
450\r
451 menu_romload_end();\r
452 menu_romload_started = 0;\r
453\r
454 if (PicoPatches) {\r
455 PicoPatchPrepare();\r
456 PicoPatchApply();\r
457 }\r
458\r
459 // additional movie stuff\r
460 if (movie_data)\r
461 {\r
462 enum input_device indev = (movie_data[0x14] == '6') ?\r
463 PICO_INPUT_PAD_6BTN : PICO_INPUT_PAD_3BTN;\r
464 PicoSetInputDevice(0, indev);\r
465 PicoSetInputDevice(1, indev);\r
466\r
467 PicoOpt |= POPT_DIS_VDP_FIFO; // no VDP fifo timing\r
468 if (movie_data[0xF] >= 'A') {\r
469 if (movie_data[0x16] & 0x80) {\r
470 PicoRegionOverride = 8;\r
471 } else {\r
472 PicoRegionOverride = 4;\r
473 }\r
474 PicoReset();\r
475 // TODO: bits 6 & 5\r
476 }\r
477 movie_data[0x18+30] = 0;\r
478 emu_status_msg("MOVIE: %s", (char *) &movie_data[0x18]);\r
479 }\r
480 else\r
481 {\r
482 system_announce();\r
483 PicoOpt &= ~POPT_DIS_VDP_FIFO;\r
484 }\r
485\r
486 strncpy(rom_fname_loaded, rom_fname, sizeof(rom_fname_loaded)-1);\r
487 rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;\r
488\r
489 // load SRAM for this ROM\r
490 if (currentConfig.EmuOpt & EOPT_EN_SRAM)\r
491 emu_save_load_game(1, 1);\r
492\r
493 retval = 1;\r
494out:\r
495 if (menu_romload_started)\r
496 menu_romload_end();\r
497 free(rom_fname);\r
498 return retval;\r
499}\r
500\r
501int emu_swap_cd(const char *fname)\r
502{\r
503 cd_img_type cd_type;\r
504 int ret = -1;\r
505\r
506 cd_type = PicoCdCheck(fname, NULL);\r
507 if (cd_type != CIT_NOT_CD)\r
508 ret = Insert_CD(fname, cd_type);\r
509 if (ret != 0) {\r
510 menu_update_msg("Load failed, invalid CD image?");\r
511 return 0;\r
512 }\r
513\r
514 strncpy(rom_fname_loaded, fname, sizeof(rom_fname_loaded)-1);\r
515 rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;\r
516 return 1;\r
517}\r
518\r
519// <base dir><end>\r
520void emu_make_path(char *buff, const char *end, int size)\r
521{\r
522 int pos, end_len;\r
523\r
524 end_len = strlen(end);\r
525 pos = plat_get_root_dir(buff, size);\r
526 strncpy(buff + pos, end, size - pos);\r
527 buff[size - 1] = 0;\r
528 if (pos + end_len > size - 1)\r
529 lprintf("Warning: path truncated: %s\n", buff);\r
530}\r
531\r
532static void make_config_cfg(char *cfg_buff_512)\r
533{\r
534 emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);\r
535 if (config_slot != 0)\r
536 {\r
537 char *p = strrchr(cfg_buff_512, '.');\r
538 if (p == NULL)\r
539 p = cfg_buff_512 + strlen(cfg_buff_512);\r
540 sprintf(p, ".%i.cfg", config_slot);\r
541 }\r
542 cfg_buff_512[511] = 0;\r
543}\r
544\r
545void emu_prep_defconfig(void)\r
546{\r
547 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
548 defaultConfig.EmuOpt = 0x9d | EOPT_RAM_TIMINGS|EOPT_EN_CD_LEDS;\r
549 defaultConfig.s_PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |\r
550 POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |\r
551 POPT_EN_SVP_DRC|POPT_ACC_SPRITES |\r
552 POPT_EN_32X|POPT_EN_PWM;\r
553 defaultConfig.s_PsndRate = 44100;\r
554 defaultConfig.s_PicoRegion = 0; // auto\r
555 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
556 defaultConfig.s_PicoCDBuffers = 0;\r
557 defaultConfig.confirm_save = EOPT_CONFIRM_SAVE;\r
558 defaultConfig.Frameskip = -1; // auto\r
559 defaultConfig.input_dev0 = PICO_INPUT_PAD_3BTN;\r
560 defaultConfig.input_dev1 = PICO_INPUT_PAD_3BTN;\r
561 defaultConfig.volume = 50;\r
562 defaultConfig.gamma = 100;\r
563 defaultConfig.scaling = 0;\r
564 defaultConfig.turbo_rate = 15;\r
565 defaultConfig.msh2_khz = PICO_MSH2_HZ / 1000;\r
566 defaultConfig.ssh2_khz = PICO_SSH2_HZ / 1000;\r
567\r
568 // platform specific overrides\r
569 pemu_prep_defconfig();\r
570}\r
571\r
572void emu_set_defconfig(void)\r
573{\r
574 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
575 PicoOpt = currentConfig.s_PicoOpt;\r
576 PsndRate = currentConfig.s_PsndRate;\r
577 PicoRegionOverride = currentConfig.s_PicoRegion;\r
578 PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
579 PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
580}\r
581\r
582int emu_read_config(const char *rom_fname, int no_defaults)\r
583{\r
584 char cfg[512];\r
585 int ret;\r
586\r
587 if (!no_defaults)\r
588 emu_set_defconfig();\r
589\r
590 if (rom_fname == NULL)\r
591 {\r
592 // global config\r
593 make_config_cfg(cfg);\r
594 ret = config_readsect(cfg, NULL);\r
595 }\r
596 else\r
597 {\r
598 char ext[16];\r
599 int vol;\r
600\r
601 if (config_slot != 0)\r
602 snprintf(ext, sizeof(ext), ".%i.cfg", config_slot);\r
603 else\r
604 strcpy(ext, ".cfg");\r
605\r
606 fname_ext(cfg, sizeof(cfg), "cfg"PATH_SEP, ext, rom_fname);\r
607\r
608 // read user's config\r
609 vol = currentConfig.volume;\r
610 ret = config_readsect(cfg, NULL);\r
611 currentConfig.volume = vol; // make vol global (bah)\r
612\r
613 if (ret != 0)\r
614 {\r
615 // read global config, and apply game_def.cfg on top\r
616 make_config_cfg(cfg);\r
617 config_readsect(cfg, NULL);\r
618\r
619 emu_make_path(cfg, "game_def.cfg", sizeof(cfg));\r
620 ret = config_readsect(cfg, emu_make_rom_id(rom_fname));\r
621 }\r
622 }\r
623\r
624 pemu_validate_config();\r
625\r
626 // some sanity checks\r
627#ifdef PSP\r
628 /* TODO: mv to plat_validate_config() */\r
629 if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
630 if (currentConfig.gamma < -4 || currentConfig.gamma > 16) currentConfig.gamma = 0;\r
631 if (currentConfig.gamma2 < 0 || currentConfig.gamma2 > 2) currentConfig.gamma2 = 0;\r
632#endif\r
633 if (currentConfig.volume < 0 || currentConfig.volume > 99)\r
634 currentConfig.volume = 50;\r
635\r
636 if (ret == 0)\r
637 config_slot_current = config_slot;\r
638\r
639 return (ret == 0);\r
640}\r
641\r
642\r
643int emu_write_config(int is_game)\r
644{\r
645 char cfg[512];\r
646 int ret, write_lrom = 0;\r
647\r
648 if (!is_game)\r
649 {\r
650 make_config_cfg(cfg);\r
651 write_lrom = 1;\r
652 } else {\r
653 char ext[16];\r
654\r
655 if (config_slot != 0)\r
656 snprintf(ext, sizeof(ext), ".%i.cfg", config_slot);\r
657 else\r
658 strcpy(ext, ".cfg");\r
659\r
660 romfname_ext(cfg, sizeof(cfg), "cfg"PATH_SEP, ext);\r
661 }\r
662\r
663 lprintf("emu_write_config: %s ", cfg);\r
664 ret = config_write(cfg);\r
665 if (write_lrom) config_writelrom(cfg);\r
666#ifdef __GP2X__\r
667 sync();\r
668#endif\r
669 lprintf((ret == 0) ? "(ok)\n" : "(failed)\n");\r
670\r
671 if (ret == 0) config_slot_current = config_slot;\r
672 return ret == 0;\r
673}\r
674\r
675\r
676/* always using built-in font */\r
677\r
678#define mk_text_out(name, type, val, topleft, step_x, step_y) \\r
679void name(int x, int y, const char *text) \\r
680{ \\r
681 int i, l, len = strlen(text); \\r
682 type *screen = (type *)(topleft) + x * step_x + y * step_y; \\r
683 \\r
684 for (i = 0; i < len; i++, screen += 8 * step_x) \\r
685 { \\r
686 for (l = 0; l < 8; l++) \\r
687 { \\r
688 unsigned char fd = fontdata8x8[text[i] * 8 + l];\\r
689 type *s = screen + l * step_y; \\r
690 if (fd&0x80) s[step_x * 0] = val; \\r
691 if (fd&0x40) s[step_x * 1] = val; \\r
692 if (fd&0x20) s[step_x * 2] = val; \\r
693 if (fd&0x10) s[step_x * 3] = val; \\r
694 if (fd&0x08) s[step_x * 4] = val; \\r
695 if (fd&0x04) s[step_x * 5] = val; \\r
696 if (fd&0x02) s[step_x * 6] = val; \\r
697 if (fd&0x01) s[step_x * 7] = val; \\r
698 } \\r
699 } \\r
700}\r
701\r
702mk_text_out(emu_text_out8, unsigned char, 0xf0, g_screen_ptr, 1, g_screen_width)\r
703mk_text_out(emu_text_out16, unsigned short, 0xffff, g_screen_ptr, 1, g_screen_width)\r
704mk_text_out(emu_text_out8_rot, unsigned char, 0xf0,\r
705 (char *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)\r
706mk_text_out(emu_text_out16_rot, unsigned short, 0xffff,\r
707 (short *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)\r
708\r
709#undef mk_text_out\r
710\r
711\r
712void update_movie(void)\r
713{\r
714 int offs = Pico.m.frame_count*3 + 0x40;\r
715 if (offs+3 > movie_size) {\r
716 free(movie_data);\r
717 movie_data = 0;\r
718 emu_status_msg("END OF MOVIE.");\r
719 lprintf("END OF MOVIE.\n");\r
720 } else {\r
721 // MXYZ SACB RLDU\r
722 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU\r
723 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // C\r
724 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // A\r
725 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // B\r
726 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
727 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // C\r
728 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // A\r
729 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // B\r
730 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
731 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
732 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
733 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
734 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
735 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
736 }\r
737}\r
738\r
739static int try_ropen_file(const char *fname)\r
740{\r
741 FILE *f;\r
742\r
743 f = fopen(fname, "rb");\r
744 if (f) {\r
745 fclose(f);\r
746 return 1;\r
747 }\r
748 return 0;\r
749}\r
750\r
751char *emu_get_save_fname(int load, int is_sram, int slot)\r
752{\r
753 char *saveFname = static_buff;\r
754 char ext[16];\r
755\r
756 if (is_sram)\r
757 {\r
758 strcpy(ext, (PicoAHW & PAHW_MCD) ? ".brm" : ".srm");\r
759 romfname_ext(saveFname, sizeof(static_buff),\r
760 (PicoAHW & PAHW_MCD) ? "brm"PATH_SEP : "srm"PATH_SEP, ext);\r
761 if (!load)\r
762 return saveFname;\r
763\r
764 if (try_ropen_file(saveFname))\r
765 return saveFname;\r
766\r
767 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
768 if (try_ropen_file(saveFname))\r
769 return saveFname;\r
770 }\r
771 else\r
772 {\r
773 const char *ext_main = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds.gz" : ".mds";\r
774 const char *ext_othr = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds" : ".mds.gz";\r
775 ext[0] = 0;\r
776 if (slot > 0 && slot < 10)\r
777 sprintf(ext, ".%i", slot);\r
778 strcat(ext, ext_main);\r
779\r
780 if (!load) {\r
781 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
782 return saveFname;\r
783 }\r
784 else {\r
785 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
786 if (try_ropen_file(saveFname))\r
787 return saveFname;\r
788\r
789 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
790 if (try_ropen_file(saveFname))\r
791 return saveFname;\r
792\r
793 // try the other ext\r
794 ext[0] = 0;\r
795 if (slot > 0 && slot < 10)\r
796 sprintf(ext, ".%i", slot);\r
797 strcat(ext, ext_othr);\r
798\r
799 romfname_ext(saveFname, sizeof(static_buff), "mds"PATH_SEP, ext);\r
800 if (try_ropen_file(saveFname))\r
801 return saveFname;\r
802 }\r
803 }\r
804\r
805 return NULL;\r
806}\r
807\r
808int emu_check_save_file(int slot, int *time)\r
809{\r
810 return emu_get_save_fname(1, 0, slot) ? 1 : 0;\r
811}\r
812\r
813int emu_save_load_game(int load, int sram)\r
814{\r
815 int ret = 0;\r
816 char *saveFname;\r
817\r
818 // make save filename\r
819 saveFname = emu_get_save_fname(load, sram, state_slot);\r
820 if (saveFname == NULL) {\r
821 if (!sram)\r
822 emu_status_msg(load ? "LOAD FAILED (missing file)" : "SAVE FAILED");\r
823 return -1;\r
824 }\r
825\r
826 lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
827\r
828 if (sram)\r
829 {\r
830 FILE *sramFile;\r
831 int sram_size;\r
832 unsigned char *sram_data;\r
833 int truncate = 1;\r
834 if (PicoAHW & PAHW_MCD)\r
835 {\r
836 if (PicoOpt & POPT_EN_MCD_RAMCART) {\r
837 sram_size = 0x12000;\r
838 sram_data = SRam.data;\r
839 if (sram_data)\r
840 memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);\r
841 } else {\r
842 sram_size = 0x2000;\r
843 sram_data = Pico_mcd->bram;\r
844 truncate = 0; // the .brm may contain RAM cart data after normal brm\r
845 }\r
846 } else {\r
847 sram_size = SRam.size;\r
848 sram_data = SRam.data;\r
849 }\r
850 if (sram_data == NULL)\r
851 return 0; // SRam forcefully disabled for this game\r
852\r
853 if (load)\r
854 {\r
855 sramFile = fopen(saveFname, "rb");\r
856 if (!sramFile)\r
857 return -1;\r
858 ret = fread(sram_data, 1, sram_size, sramFile);\r
859 ret = ret > 0 ? 0 : -1;\r
860 fclose(sramFile);\r
861 if ((PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_RAMCART))\r
862 memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);\r
863 } else {\r
864 // sram save needs some special processing\r
865 // see if we have anything to save\r
866 for (; sram_size > 0; sram_size--)\r
867 if (sram_data[sram_size-1]) break;\r
868\r
869 if (sram_size) {\r
870 sramFile = fopen(saveFname, truncate ? "wb" : "r+b");\r
871 if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry\r
872 if (!sramFile) return -1;\r
873 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
874 ret = (ret != sram_size) ? -1 : 0;\r
875 fclose(sramFile);\r
876#ifdef __GP2X__\r
877 sync();\r
878#endif\r
879 }\r
880 }\r
881 return ret;\r
882 }\r
883 else\r
884 {\r
885 ret = PicoState(saveFname, !load);\r
886 if (!ret) {\r
887#ifdef __GP2X__\r
888 if (!load) sync();\r
889#endif\r
890 emu_status_msg(load ? "STATE LOADED" : "STATE SAVED");\r
891 } else {\r
892 emu_status_msg(load ? "LOAD FAILED" : "SAVE FAILED");\r
893 ret = -1;\r
894 }\r
895\r
896 return ret;\r
897 }\r
898}\r
899\r
900void emu_set_fastforward(int set_on)\r
901{\r
902 static void *set_PsndOut = NULL;\r
903 static int set_Frameskip, set_EmuOpt, is_on = 0;\r
904\r
905 if (set_on && !is_on) {\r
906 set_PsndOut = PsndOut;\r
907 set_Frameskip = currentConfig.Frameskip;\r
908 set_EmuOpt = currentConfig.EmuOpt;\r
909 PsndOut = NULL;\r
910 currentConfig.Frameskip = 8;\r
911 currentConfig.EmuOpt &= ~4;\r
912 currentConfig.EmuOpt |= 0x40000;\r
913 is_on = 1;\r
914 emu_status_msg("FAST FORWARD");\r
915 }\r
916 else if (!set_on && is_on) {\r
917 PsndOut = set_PsndOut;\r
918 currentConfig.Frameskip = set_Frameskip;\r
919 currentConfig.EmuOpt = set_EmuOpt;\r
920 PsndRerate(1);\r
921 is_on = 0;\r
922 }\r
923}\r
924\r
925static void emu_tray_open(void)\r
926{\r
927 engineState = PGS_TrayMenu;\r
928}\r
929\r
930static void emu_tray_close(void)\r
931{\r
932 emu_status_msg("CD tray closed.");\r
933}\r
934\r
935void emu_32x_startup(void)\r
936{\r
937 plat_video_toggle_renderer(0, 0); // HACK\r
938 system_announce();\r
939}\r
940\r
941void emu_reset_game(void)\r
942{\r
943 PicoReset();\r
944 reset_timing = 1;\r
945}\r
946\r
947void run_events_pico(unsigned int events)\r
948{\r
949 int lim_x;\r
950\r
951 if (events & PEV_PICO_SWINP) {\r
952 pico_inp_mode++;\r
953 if (pico_inp_mode > 2)\r
954 pico_inp_mode = 0;\r
955 switch (pico_inp_mode) {\r
956 case 2: emu_status_msg("Input: Pen on Pad"); break;\r
957 case 1: emu_status_msg("Input: Pen on Storyware"); break;\r
958 case 0: emu_status_msg("Input: Joystick");\r
959 PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
960 break;\r
961 }\r
962 }\r
963 if (events & PEV_PICO_PPREV) {\r
964 PicoPicohw.page--;\r
965 if (PicoPicohw.page < 0)\r
966 PicoPicohw.page = 0;\r
967 emu_status_msg("Page %i", PicoPicohw.page);\r
968 }\r
969 if (events & PEV_PICO_PNEXT) {\r
970 PicoPicohw.page++;\r
971 if (PicoPicohw.page > 6)\r
972 PicoPicohw.page = 6;\r
973 emu_status_msg("Page %i", PicoPicohw.page);\r
974 }\r
975\r
976 if (pico_inp_mode == 0)\r
977 return;\r
978\r
979 /* handle other input modes */\r
980 if (PicoPad[0] & 1) pico_pen_y--;\r
981 if (PicoPad[0] & 2) pico_pen_y++;\r
982 if (PicoPad[0] & 4) pico_pen_x--;\r
983 if (PicoPad[0] & 8) pico_pen_x++;\r
984 PicoPad[0] &= ~0x0f; // release UDLR\r
985\r
986 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
987 if (pico_pen_y < 8)\r
988 pico_pen_y = 8;\r
989 if (pico_pen_y > 224 - PICO_PEN_ADJUST_Y)\r
990 pico_pen_y = 224 - PICO_PEN_ADJUST_Y;\r
991 if (pico_pen_x < 0)\r
992 pico_pen_x = 0;\r
993 if (pico_pen_x > lim_x - PICO_PEN_ADJUST_X)\r
994 pico_pen_x = lim_x - PICO_PEN_ADJUST_X;\r
995\r
996 PicoPicohw.pen_pos[0] = pico_pen_x;\r
997 if (!(Pico.video.reg[12] & 1))\r
998 PicoPicohw.pen_pos[0] += pico_pen_x / 4;\r
999 PicoPicohw.pen_pos[0] += 0x3c;\r
1000 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
1001}\r
1002\r
1003static void do_turbo(int *pad, int acts)\r
1004{\r
1005 static int turbo_pad = 0;\r
1006 static unsigned char turbo_cnt[3] = { 0, 0, 0 };\r
1007 int inc = currentConfig.turbo_rate * 2;\r
1008\r
1009 if (acts & 0x1000) {\r
1010 turbo_cnt[0] += inc;\r
1011 if (turbo_cnt[0] >= 60)\r
1012 turbo_pad ^= 0x10, turbo_cnt[0] = 0;\r
1013 }\r
1014 if (acts & 0x2000) {\r
1015 turbo_cnt[1] += inc;\r
1016 if (turbo_cnt[1] >= 60)\r
1017 turbo_pad ^= 0x20, turbo_cnt[1] = 0;\r
1018 }\r
1019 if (acts & 0x4000) {\r
1020 turbo_cnt[2] += inc;\r
1021 if (turbo_cnt[2] >= 60)\r
1022 turbo_pad ^= 0x40, turbo_cnt[2] = 0;\r
1023 }\r
1024 *pad |= turbo_pad & (acts >> 8);\r
1025}\r
1026\r
1027static void run_events_ui(unsigned int which)\r
1028{\r
1029 if (which & (PEV_STATE_LOAD|PEV_STATE_SAVE))\r
1030 {\r
1031 int do_it = 1;\r
1032 if ( emu_check_save_file(state_slot, NULL) &&\r
1033 (((which & PEV_STATE_LOAD) && (currentConfig.confirm_save & EOPT_CONFIRM_LOAD)) ||\r
1034 ((which & PEV_STATE_SAVE) && (currentConfig.confirm_save & EOPT_CONFIRM_SAVE))) )\r
1035 {\r
1036 const char *nm;\r
1037 char tmp[64];\r
1038 int keys, len;\r
1039\r
1040 strcpy(tmp, (which & PEV_STATE_LOAD) ? "LOAD STATE?" : "OVERWRITE SAVE?");\r
1041 len = strlen(tmp);\r
1042 nm = in_get_key_name(-1, -PBTN_MA3);\r
1043 snprintf(tmp + len, sizeof(tmp) - len, "(%s=yes, ", nm);\r
1044 len = strlen(tmp);\r
1045 nm = in_get_key_name(-1, -PBTN_MBACK);\r
1046 snprintf(tmp + len, sizeof(tmp) - len, "%s=no)", nm);\r
1047\r
1048 plat_status_msg_busy_first(tmp);\r
1049\r
1050 in_set_config_int(0, IN_CFG_BLOCKING, 1);\r
1051 while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))\r
1052 ;\r
1053 while ( !((keys = in_menu_wait_any(NULL, 50)) & (PBTN_MA3|PBTN_MBACK)) )\r
1054 ;\r
1055 if (keys & PBTN_MBACK)\r
1056 do_it = 0;\r
1057 while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))\r
1058 ;\r
1059 in_set_config_int(0, IN_CFG_BLOCKING, 0);\r
1060 }\r
1061 if (do_it) {\r
1062 plat_status_msg_busy_first((which & PEV_STATE_LOAD) ? "LOADING STATE" : "SAVING STATE");\r
1063 PicoStateProgressCB = plat_status_msg_busy_next;\r
1064 emu_save_load_game((which & PEV_STATE_LOAD) ? 1 : 0, 0);\r
1065 PicoStateProgressCB = NULL;\r
1066 }\r
1067 }\r
1068 if (which & PEV_SWITCH_RND)\r
1069 {\r
1070 plat_video_toggle_renderer(1, 0);\r
1071 }\r
1072 if (which & (PEV_SSLOT_PREV|PEV_SSLOT_NEXT))\r
1073 {\r
1074 if (which & PEV_SSLOT_PREV) {\r
1075 state_slot -= 1;\r
1076 if (state_slot < 0)\r
1077 state_slot = 9;\r
1078 } else {\r
1079 state_slot += 1;\r
1080 if (state_slot > 9)\r
1081 state_slot = 0;\r
1082 }\r
1083\r
1084 emu_status_msg("SAVE SLOT %i [%s]", state_slot,\r
1085 emu_check_save_file(state_slot, NULL) ? "USED" : "FREE");\r
1086 }\r
1087 if (which & PEV_MENU)\r
1088 engineState = PGS_Menu;\r
1089}\r
1090\r
1091void emu_update_input(void)\r
1092{\r
1093 static int prev_events = 0;\r
1094 int actions[IN_BINDTYPE_COUNT] = { 0, };\r
1095 int pl_actions[2];\r
1096 int events;\r
1097\r
1098 in_update(actions);\r
1099\r
1100 pl_actions[0] = actions[IN_BINDTYPE_PLAYER12];\r
1101 pl_actions[1] = actions[IN_BINDTYPE_PLAYER12] >> 16;\r
1102\r
1103 PicoPad[0] = pl_actions[0] & 0xfff;\r
1104 PicoPad[1] = pl_actions[1] & 0xfff;\r
1105\r
1106 if (pl_actions[0] & 0x7000)\r
1107 do_turbo(&PicoPad[0], pl_actions[0]);\r
1108 if (pl_actions[1] & 0x7000)\r
1109 do_turbo(&PicoPad[1], pl_actions[1]);\r
1110\r
1111 events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1112\r
1113 // volume is treated in special way and triggered every frame\r
1114 if (events & (PEV_VOL_DOWN|PEV_VOL_UP))\r
1115 plat_update_volume(1, events & PEV_VOL_UP);\r
1116\r
1117 if ((events ^ prev_events) & PEV_FF) {\r
1118 emu_set_fastforward(events & PEV_FF);\r
1119 plat_update_volume(0, 0);\r
1120 reset_timing = 1;\r
1121 }\r
1122\r
1123 events &= ~prev_events;\r
1124\r
1125 if (PicoAHW == PAHW_PICO)\r
1126 run_events_pico(events);\r
1127 if (events)\r
1128 run_events_ui(events);\r
1129 if (movie_data)\r
1130 update_movie();\r
1131\r
1132 prev_events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1133}\r
1134\r
1135static void mkdir_path(char *path_with_reserve, int pos, const char *name)\r
1136{\r
1137 strcpy(path_with_reserve + pos, name);\r
1138 if (plat_is_dir(path_with_reserve))\r
1139 return;\r
1140 if (mkdir(path_with_reserve, 0777) < 0)\r
1141 lprintf("failed to create: %s\n", path_with_reserve);\r
1142}\r
1143\r
1144void emu_cmn_forced_frame(int no_scale, int do_emu)\r
1145{\r
1146 int po_old = PicoOpt;\r
1147\r
1148 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
1149\r
1150 PicoOpt &= ~POPT_ALT_RENDERER;\r
1151 PicoOpt |= POPT_ACC_SPRITES;\r
1152 if (!no_scale)\r
1153 PicoOpt |= POPT_EN_SOFTSCALE;\r
1154\r
1155 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
1156 Pico.m.dirtyPal = 1;\r
1157 if (do_emu)\r
1158 PicoFrame();\r
1159 else\r
1160 PicoFrameDrawOnly();\r
1161\r
1162 PicoOpt = po_old;\r
1163}\r
1164\r
1165void emu_init(void)\r
1166{\r
1167 char path[512];\r
1168 int pos;\r
1169\r
1170#if 0\r
1171 // FIXME: handle through menu, etc\r
1172 FILE *f;\r
1173 f = fopen("32X_M_BIOS.BIN", "rb");\r
1174 p32x_bios_m = malloc(2048);\r
1175 fread(p32x_bios_m, 1, 2048, f);\r
1176 fclose(f);\r
1177 f = fopen("32X_S_BIOS.BIN", "rb");\r
1178 p32x_bios_s = malloc(1024);\r
1179 fread(p32x_bios_s, 1, 1024, f);\r
1180 fclose(f);\r
1181#endif\r
1182\r
1183 /* make dirs for saves */\r
1184 pos = plat_get_root_dir(path, sizeof(path) - 4);\r
1185 mkdir_path(path, pos, "mds");\r
1186 mkdir_path(path, pos, "srm");\r
1187 mkdir_path(path, pos, "brm");\r
1188 mkdir_path(path, pos, "cfg");\r
1189\r
1190 pprof_init();\r
1191\r
1192 make_config_cfg(path);\r
1193 config_readlrom(path);\r
1194\r
1195 PicoInit();\r
1196 PicoMessage = plat_status_msg_busy_next;\r
1197 PicoMCDopenTray = emu_tray_open;\r
1198 PicoMCDcloseTray = emu_tray_close;\r
1199\r
1200 sndout_init();\r
1201}\r
1202\r
1203void emu_finish(void)\r
1204{\r
1205 // save SRAM\r
1206 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {\r
1207 emu_save_load_game(0, 1);\r
1208 SRam.changed = 0;\r
1209 }\r
1210\r
1211 if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {\r
1212 char cfg[512];\r
1213 make_config_cfg(cfg);\r
1214 config_writelrom(cfg);\r
1215#ifdef __GP2X__\r
1216 sync();\r
1217#endif\r
1218 }\r
1219\r
1220 pprof_finish();\r
1221\r
1222 PicoExit();\r
1223 sndout_exit();\r
1224}\r
1225\r
1226static void snd_write_nonblocking(int len)\r
1227{\r
1228 sndout_write_nb(PsndOut, len);\r
1229}\r
1230\r
1231void emu_sound_start(void)\r
1232{\r
1233 PsndOut = NULL;\r
1234\r
1235 if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
1236 {\r
1237 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
1238\r
1239 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
1240\r
1241 printf("starting audio: %i len: %i stereo: %i, pal: %i\n",\r
1242 PsndRate, PsndLen, is_stereo, Pico.m.pal);\r
1243 sndout_start(PsndRate, is_stereo);\r
1244 PicoWriteSound = snd_write_nonblocking;\r
1245 plat_update_volume(0, 0);\r
1246 memset(sndBuffer, 0, sizeof(sndBuffer));\r
1247 PsndOut = sndBuffer;\r
1248 }\r
1249}\r
1250\r
1251void emu_sound_stop(void)\r
1252{\r
1253 sndout_stop();\r
1254}\r
1255\r
1256void emu_sound_wait(void)\r
1257{\r
1258 sndout_wait();\r
1259}\r
1260\r
1261static void emu_loop_prep(void)\r
1262{\r
1263 static int pal_old = -1;\r
1264 static int filter_old = -1;\r
1265\r
1266 if (currentConfig.CPUclock != plat_target_cpu_clock_get())\r
1267 plat_target_cpu_clock_set(currentConfig.CPUclock);\r
1268\r
1269 if (Pico.m.pal != pal_old) {\r
1270 plat_target_lcdrate_set(Pico.m.pal);\r
1271 pal_old = Pico.m.pal;\r
1272 }\r
1273\r
1274 if (currentConfig.filter != filter_old) {\r
1275 plat_target_hwfilter_set(currentConfig.filter);\r
1276 filter_old = currentConfig.filter;\r
1277 }\r
1278\r
1279 plat_target_gamma_set(currentConfig.gamma, 0);\r
1280\r
1281 pemu_loop_prep();\r
1282}\r
1283\r
1284static void skip_frame(int do_audio)\r
1285{\r
1286 PicoSkipFrame = do_audio ? 1 : 2;\r
1287 PicoFrame();\r
1288 PicoSkipFrame = 0;\r
1289}\r
1290\r
1291/* our tick here is 1 us right now */\r
1292#define ms_to_ticks(x) (unsigned int)(x * 1000)\r
1293#define get_ticks() plat_get_ticks_us()\r
1294\r
1295void emu_loop(void)\r
1296{\r
1297 int pframes_done; /* "period" frames, used for sync */\r
1298 int frames_done, frames_shown; /* actual frames for fps counter */\r
1299 int target_fps, target_frametime;\r
1300 unsigned int timestamp_base = 0, timestamp_fps;\r
1301 char *notice_msg = NULL;\r
1302 char fpsbuff[24];\r
1303 int i;\r
1304\r
1305 fpsbuff[0] = 0;\r
1306\r
1307 PicoLoopPrepare();\r
1308\r
1309 // prepare CD buffer\r
1310 if (PicoAHW & PAHW_MCD)\r
1311 PicoCDBufferInit();\r
1312\r
1313 plat_video_loop_prepare();\r
1314 emu_loop_prep();\r
1315 pemu_sound_start();\r
1316\r
1317 /* number of ticks per frame */\r
1318 if (Pico.m.pal) {\r
1319 target_fps = 50;\r
1320 target_frametime = ms_to_ticks(1000) / 50;\r
1321 } else {\r
1322 target_fps = 60;\r
1323 target_frametime = ms_to_ticks(1000) / 60 + 1;\r
1324 }\r
1325\r
1326 timestamp_fps = get_ticks();\r
1327 reset_timing = 1;\r
1328\r
1329 frames_done = frames_shown = pframes_done = 0;\r
1330\r
1331 plat_video_wait_vsync();\r
1332\r
1333 /* loop with resync every 1 sec. */\r
1334 while (engineState == PGS_Running)\r
1335 {\r
1336 unsigned int timestamp;\r
1337 int diff, diff_lim;\r
1338\r
1339 pprof_start(main);\r
1340\r
1341 timestamp = get_ticks();\r
1342 if (reset_timing) {\r
1343 reset_timing = 0;\r
1344 timestamp_base = timestamp;\r
1345 pframes_done = 0;\r
1346 }\r
1347\r
1348 // show notice_msg message?\r
1349 if (notice_msg_time != 0)\r
1350 {\r
1351 static int noticeMsgSum;\r
1352 if (timestamp - ms_to_ticks(notice_msg_time) > ms_to_ticks(STATUS_MSG_TIMEOUT)) {\r
1353 notice_msg_time = 0;\r
1354 plat_status_msg_clear();\r
1355 notice_msg = NULL;\r
1356 } else {\r
1357 int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];\r
1358 if (sum != noticeMsgSum) {\r
1359 plat_status_msg_clear();\r
1360 noticeMsgSum = sum;\r
1361 }\r
1362 notice_msg = noticeMsg;\r
1363 }\r
1364 }\r
1365\r
1366 // second changed?\r
1367 if (timestamp - timestamp_fps >= ms_to_ticks(1000))\r
1368 {\r
1369#ifdef BENCHMARK\r
1370 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1371 if (++bench == 10) {\r
1372 bench = 0;\r
1373 bench_fps_s = bench_fps;\r
1374 bf[bfp++ & 3] = bench_fps;\r
1375 bench_fps = 0;\r
1376 }\r
1377 bench_fps += frames_shown;\r
1378 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1379 printf("%s\n", fpsbuff);\r
1380#else\r
1381 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
1382 sprintf(fpsbuff, "%02i/%02i ", frames_shown, frames_done);\r
1383#endif\r
1384 frames_shown = frames_done = 0;\r
1385 timestamp_fps += ms_to_ticks(1000);\r
1386 }\r
1387#ifdef PFRAMES\r
1388 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
1389#endif\r
1390\r
1391 if (timestamp - timestamp_base >= ms_to_ticks(1000))\r
1392 {\r
1393 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && currentConfig.Frameskip >= 0)\r
1394 pframes_done = 0;\r
1395 else\r
1396 pframes_done -= target_fps;\r
1397 if (pframes_done < -2) {\r
1398 /* don't drag more than 2 frames behind */\r
1399 pframes_done = -2;\r
1400 timestamp_base = timestamp - 2 * target_frametime;\r
1401 }\r
1402 else\r
1403 timestamp_base += ms_to_ticks(1000);\r
1404 }\r
1405\r
1406 diff = timestamp - timestamp_base;\r
1407 diff_lim = (pframes_done + 1) * target_frametime;\r
1408\r
1409 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
1410 {\r
1411 for (i = 0; i < currentConfig.Frameskip; i++) {\r
1412 emu_update_input();\r
1413 skip_frame(1);\r
1414 pframes_done++; frames_done++;\r
1415 diff_lim += target_frametime;\r
1416\r
1417 if (!(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT))) {\r
1418 timestamp = get_ticks();\r
1419 diff = timestamp - timestamp_base;\r
1420 if (!reset_timing && diff < diff_lim) // we are too fast\r
1421 plat_wait_till_us(timestamp_base + diff_lim);\r
1422 }\r
1423 }\r
1424 }\r
1425 else if (diff > diff_lim)\r
1426 {\r
1427 /* no time left for this frame - skip */\r
1428 /* limit auto frameskip to 8 */\r
1429 if (frames_done / 8 <= frames_shown) {\r
1430 emu_update_input();\r
1431 skip_frame(diff < diff_lim + target_frametime * 16);\r
1432 pframes_done++; frames_done++;\r
1433 continue;\r
1434 }\r
1435 }\r
1436\r
1437 emu_update_input();\r
1438 PicoFrame();\r
1439 pemu_finalize_frame(fpsbuff, notice_msg);\r
1440\r
1441 if (!flip_after_sync)\r
1442 plat_video_flip();\r
1443\r
1444 /* frame limiter */\r
1445 if (!reset_timing && !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))\r
1446 {\r
1447 timestamp = get_ticks();\r
1448 diff = timestamp - timestamp_base;\r
1449\r
1450 // sleep or vsync if we are still too fast\r
1451 if (diff < diff_lim)\r
1452 {\r
1453 // we are too fast\r
1454 plat_wait_till_us(timestamp_base + diff_lim - target_frametime / 4);\r
1455 if (currentConfig.EmuOpt & EOPT_VSYNC)\r
1456 plat_video_wait_vsync();\r
1457 }\r
1458 }\r
1459\r
1460 if (flip_after_sync)\r
1461 plat_video_flip();\r
1462\r
1463 pframes_done++; frames_done++; frames_shown++;\r
1464\r
1465 pprof_end(main);\r
1466 }\r
1467\r
1468 emu_set_fastforward(0);\r
1469\r
1470 // save SRAM\r
1471 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {\r
1472 plat_status_msg_busy_first("Writing SRAM/BRAM...");\r
1473 emu_save_load_game(0, 1);\r
1474 SRam.changed = 0;\r
1475 }\r
1476\r
1477 pemu_loop_end();\r
1478 emu_sound_stop();\r
1479\r
1480 // pemu_loop_end() might want to do 1 frame for bg image,\r
1481 // so free CD buffer here\r
1482 if (PicoAHW & PAHW_MCD)\r
1483 PicoCDBufferFree();\r
1484}\r
1485\r
fast MegaDrive/MegaCD/32X emulator