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