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draw: fix mistake from 9c9cda8c3
[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 menu_romload_end();\r
448 menu_romload_started = 0;\r
449\r
450 if (PicoPatches) {\r
451 PicoPatchPrepare();\r
452 PicoPatchApply();\r
453 }\r
454\r
455 // additional movie stuff\r
456 if (movie_data)\r
457 {\r
458 if (movie_data[0x14] == '6')\r
459 PicoOpt |= POPT_6BTN_PAD; // 6 button pad\r
460 else PicoOpt &= ~POPT_6BTN_PAD;\r
461 PicoOpt |= POPT_DIS_VDP_FIFO; // no VDP fifo timing\r
462 if (movie_data[0xF] >= 'A') {\r
463 if (movie_data[0x16] & 0x80) {\r
464 PicoRegionOverride = 8;\r
465 } else {\r
466 PicoRegionOverride = 4;\r
467 }\r
468 PicoReset();\r
469 // TODO: bits 6 & 5\r
470 }\r
471 movie_data[0x18+30] = 0;\r
472 emu_status_msg("MOVIE: %s", (char *) &movie_data[0x18]);\r
473 }\r
474 else\r
475 {\r
476 system_announce();\r
477 PicoOpt &= ~POPT_DIS_VDP_FIFO;\r
478 }\r
479\r
480 strncpy(rom_fname_loaded, rom_fname, sizeof(rom_fname_loaded)-1);\r
481 rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;\r
482\r
483 // load SRAM for this ROM\r
484 if (currentConfig.EmuOpt & EOPT_EN_SRAM)\r
485 emu_save_load_game(1, 1);\r
486\r
487 retval = 1;\r
488out:\r
489 if (menu_romload_started)\r
490 menu_romload_end();\r
491 free(rom_fname);\r
492 return retval;\r
493}\r
494\r
495int emu_swap_cd(const char *fname)\r
496{\r
497 cd_img_type cd_type;\r
498 int ret = -1;\r
499\r
500 cd_type = PicoCdCheck(fname, NULL);\r
501 if (cd_type != CIT_NOT_CD)\r
502 ret = Insert_CD(fname, cd_type);\r
503 if (ret != 0) {\r
504 menu_update_msg("Load failed, invalid CD image?");\r
505 return 0;\r
506 }\r
507\r
508 strncpy(rom_fname_loaded, fname, sizeof(rom_fname_loaded)-1);\r
509 rom_fname_loaded[sizeof(rom_fname_loaded)-1] = 0;\r
510 return 1;\r
511}\r
512\r
513// <base dir><end>\r
514void emu_make_path(char *buff, const char *end, int size)\r
515{\r
516 int pos, end_len;\r
517\r
518 end_len = strlen(end);\r
519 pos = plat_get_root_dir(buff, size);\r
520 strncpy(buff + pos, end, size - pos);\r
521 buff[size - 1] = 0;\r
522 if (pos + end_len > size - 1)\r
523 lprintf("Warning: path truncated: %s\n", buff);\r
524}\r
525\r
526static void make_config_cfg(char *cfg_buff_512)\r
527{\r
528 emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);\r
529 if (config_slot != 0)\r
530 {\r
531 char *p = strrchr(cfg_buff_512, '.');\r
532 if (p == NULL)\r
533 p = cfg_buff_512 + strlen(cfg_buff_512);\r
534 sprintf(p, ".%i.cfg", config_slot);\r
535 }\r
536 cfg_buff_512[511] = 0;\r
537}\r
538\r
539void emu_prep_defconfig(void)\r
540{\r
541 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
542 defaultConfig.EmuOpt = 0x9d | EOPT_RAM_TIMINGS|EOPT_EN_CD_LEDS;\r
543 defaultConfig.s_PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80 |\r
544 POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX |\r
545 POPT_EN_SVP_DRC|POPT_ACC_SPRITES |\r
546 POPT_EN_32X|POPT_EN_PWM;\r
547 defaultConfig.s_PsndRate = 44100;\r
548 defaultConfig.s_PicoRegion = 0; // auto\r
549 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
550 defaultConfig.s_PicoCDBuffers = 0;\r
551 defaultConfig.confirm_save = EOPT_CONFIRM_SAVE;\r
552 defaultConfig.Frameskip = -1; // auto\r
553 defaultConfig.volume = 50;\r
554 defaultConfig.gamma = 100;\r
555 defaultConfig.scaling = 0;\r
556 defaultConfig.turbo_rate = 15;\r
557 defaultConfig.msh2_khz = PICO_MSH2_HZ / 1000;\r
558 defaultConfig.ssh2_khz = PICO_SSH2_HZ / 1000;\r
559\r
560 // platform specific overrides\r
561 pemu_prep_defconfig();\r
562}\r
563\r
564void emu_set_defconfig(void)\r
565{\r
566 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
567 PicoOpt = currentConfig.s_PicoOpt;\r
568 PsndRate = currentConfig.s_PsndRate;\r
569 PicoRegionOverride = currentConfig.s_PicoRegion;\r
570 PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
571 PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
572}\r
573\r
574int emu_read_config(const char *rom_fname, int no_defaults)\r
575{\r
576 char cfg[512];\r
577 int ret;\r
578\r
579 if (!no_defaults)\r
580 emu_set_defconfig();\r
581\r
582 if (rom_fname == NULL)\r
583 {\r
584 // global config\r
585 make_config_cfg(cfg);\r
586 ret = config_readsect(cfg, NULL);\r
587 }\r
588 else\r
589 {\r
590 char ext[16];\r
591 int vol;\r
592\r
593 if (config_slot != 0)\r
594 snprintf(ext, sizeof(ext), ".%i.cfg", config_slot);\r
595 else\r
596 strcpy(ext, ".cfg");\r
597\r
598 fname_ext(cfg, sizeof(cfg), "cfg"PATH_SEP, ext, rom_fname);\r
599\r
600 // read user's config\r
601 vol = currentConfig.volume;\r
602 ret = config_readsect(cfg, NULL);\r
603 currentConfig.volume = vol; // make vol global (bah)\r
604\r
605 if (ret != 0)\r
606 {\r
607 // read global config, and apply game_def.cfg on top\r
608 make_config_cfg(cfg);\r
609 config_readsect(cfg, NULL);\r
610\r
611 emu_make_path(cfg, "game_def.cfg", sizeof(cfg));\r
612 ret = config_readsect(cfg, emu_make_rom_id(rom_fname));\r
613 }\r
614 }\r
615\r
616 pemu_validate_config();\r
617\r
618 // some sanity checks\r
619#ifdef PSP\r
620 /* TODO: mv to plat_validate_config() */\r
621 if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
622 if (currentConfig.gamma < -4 || currentConfig.gamma > 16) currentConfig.gamma = 0;\r
623 if (currentConfig.gamma2 < 0 || currentConfig.gamma2 > 2) currentConfig.gamma2 = 0;\r
624#endif\r
625 if (currentConfig.volume < 0 || currentConfig.volume > 99)\r
626 currentConfig.volume = 50;\r
627\r
628 if (ret == 0)\r
629 config_slot_current = config_slot;\r
630\r
631 return (ret == 0);\r
632}\r
633\r
634\r
635int emu_write_config(int is_game)\r
636{\r
637 char cfg[512];\r
638 int ret, write_lrom = 0;\r
639\r
640 if (!is_game)\r
641 {\r
642 make_config_cfg(cfg);\r
643 write_lrom = 1;\r
644 } else {\r
645 char ext[16];\r
646\r
647 if (config_slot != 0)\r
648 snprintf(ext, sizeof(ext), ".%i.cfg", config_slot);\r
649 else\r
650 strcpy(ext, ".cfg");\r
651\r
652 romfname_ext(cfg, sizeof(cfg), "cfg"PATH_SEP, ext);\r
653 }\r
654\r
655 lprintf("emu_write_config: %s ", cfg);\r
656 ret = config_write(cfg);\r
657 if (write_lrom) config_writelrom(cfg);\r
658#ifdef __GP2X__\r
659 sync();\r
660#endif\r
661 lprintf((ret == 0) ? "(ok)\n" : "(failed)\n");\r
662\r
663 if (ret == 0) config_slot_current = config_slot;\r
664 return ret == 0;\r
665}\r
666\r
667\r
668/* always using built-in font */\r
669\r
670#define mk_text_out(name, type, val, topleft, step_x, step_y) \\r
671void name(int x, int y, const char *text) \\r
672{ \\r
673 int i, l, len = strlen(text); \\r
674 type *screen = (type *)(topleft) + x * step_x + y * step_y; \\r
675 \\r
676 for (i = 0; i < len; i++, screen += 8 * step_x) \\r
677 { \\r
678 for (l = 0; l < 8; l++) \\r
679 { \\r
680 unsigned char fd = fontdata8x8[text[i] * 8 + l];\\r
681 type *s = screen + l * step_y; \\r
682 if (fd&0x80) s[step_x * 0] = val; \\r
683 if (fd&0x40) s[step_x * 1] = val; \\r
684 if (fd&0x20) s[step_x * 2] = val; \\r
685 if (fd&0x10) s[step_x * 3] = val; \\r
686 if (fd&0x08) s[step_x * 4] = val; \\r
687 if (fd&0x04) s[step_x * 5] = val; \\r
688 if (fd&0x02) s[step_x * 6] = val; \\r
689 if (fd&0x01) s[step_x * 7] = val; \\r
690 } \\r
691 } \\r
692}\r
693\r
694mk_text_out(emu_text_out8, unsigned char, 0xf0, g_screen_ptr, 1, g_screen_width)\r
695mk_text_out(emu_text_out16, unsigned short, 0xffff, g_screen_ptr, 1, g_screen_width)\r
696mk_text_out(emu_text_out8_rot, unsigned char, 0xf0,\r
697 (char *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)\r
698mk_text_out(emu_text_out16_rot, unsigned short, 0xffff,\r
699 (short *)g_screen_ptr + (g_screen_width - 1) * g_screen_height, -g_screen_height, 1)\r
700\r
701#undef mk_text_out\r
702\r
703\r
704void update_movie(void)\r
705{\r
706 int offs = Pico.m.frame_count*3 + 0x40;\r
707 if (offs+3 > movie_size) {\r
708 free(movie_data);\r
709 movie_data = 0;\r
710 emu_status_msg("END OF MOVIE.");\r
711 lprintf("END OF MOVIE.\n");\r
712 } else {\r
713 // MXYZ SACB RLDU\r
714 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU\r
715 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // C\r
716 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // A\r
717 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // B\r
718 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
719 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // C\r
720 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // A\r
721 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // B\r
722 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
723 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
724 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
725 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
726 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
727 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
728 }\r
729}\r
730\r
731static int try_ropen_file(const char *fname)\r
732{\r
733 FILE *f;\r
734\r
735 f = fopen(fname, "rb");\r
736 if (f) {\r
737 fclose(f);\r
738 return 1;\r
739 }\r
740 return 0;\r
741}\r
742\r
743char *emu_get_save_fname(int load, int is_sram, int slot)\r
744{\r
745 char *saveFname = static_buff;\r
746 char ext[16];\r
747\r
748 if (is_sram)\r
749 {\r
750 strcpy(ext, (PicoAHW & PAHW_MCD) ? ".brm" : ".srm");\r
751 romfname_ext(saveFname, sizeof(static_buff),\r
752 (PicoAHW & PAHW_MCD) ? "brm"PATH_SEP : "srm"PATH_SEP, ext);\r
753 if (!load)\r
754 return saveFname;\r
755\r
756 if (try_ropen_file(saveFname))\r
757 return saveFname;\r
758\r
759 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
760 if (try_ropen_file(saveFname))\r
761 return saveFname;\r
762 }\r
763 else\r
764 {\r
765 const char *ext_main = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds.gz" : ".mds";\r
766 const char *ext_othr = (currentConfig.EmuOpt & EOPT_GZIP_SAVES) ? ".mds" : ".mds.gz";\r
767 ext[0] = 0;\r
768 if (slot > 0 && slot < 10)\r
769 sprintf(ext, ".%i", slot);\r
770 strcat(ext, ext_main);\r
771\r
772 if (!load) {\r
773 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
774 return saveFname;\r
775 }\r
776 else {\r
777 romfname_ext(saveFname, sizeof(static_buff), "mds" PATH_SEP, ext);\r
778 if (try_ropen_file(saveFname))\r
779 return saveFname;\r
780\r
781 romfname_ext(saveFname, sizeof(static_buff), NULL, ext);\r
782 if (try_ropen_file(saveFname))\r
783 return saveFname;\r
784\r
785 // try the other ext\r
786 ext[0] = 0;\r
787 if (slot > 0 && slot < 10)\r
788 sprintf(ext, ".%i", slot);\r
789 strcat(ext, ext_othr);\r
790\r
791 romfname_ext(saveFname, sizeof(static_buff), "mds"PATH_SEP, ext);\r
792 if (try_ropen_file(saveFname))\r
793 return saveFname;\r
794 }\r
795 }\r
796\r
797 return NULL;\r
798}\r
799\r
800int emu_check_save_file(int slot, int *time)\r
801{\r
802 return emu_get_save_fname(1, 0, slot) ? 1 : 0;\r
803}\r
804\r
805int emu_save_load_game(int load, int sram)\r
806{\r
807 int ret = 0;\r
808 char *saveFname;\r
809\r
810 // make save filename\r
811 saveFname = emu_get_save_fname(load, sram, state_slot);\r
812 if (saveFname == NULL) {\r
813 if (!sram)\r
814 emu_status_msg(load ? "LOAD FAILED (missing file)" : "SAVE FAILED");\r
815 return -1;\r
816 }\r
817\r
818 lprintf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
819\r
820 if (sram)\r
821 {\r
822 FILE *sramFile;\r
823 int sram_size;\r
824 unsigned char *sram_data;\r
825 int truncate = 1;\r
826 if (PicoAHW & PAHW_MCD)\r
827 {\r
828 if (PicoOpt & POPT_EN_MCD_RAMCART) {\r
829 sram_size = 0x12000;\r
830 sram_data = SRam.data;\r
831 if (sram_data)\r
832 memcpy32((int *)sram_data, (int *)Pico_mcd->bram, 0x2000/4);\r
833 } else {\r
834 sram_size = 0x2000;\r
835 sram_data = Pico_mcd->bram;\r
836 truncate = 0; // the .brm may contain RAM cart data after normal brm\r
837 }\r
838 } else {\r
839 sram_size = SRam.size;\r
840 sram_data = SRam.data;\r
841 }\r
842 if (sram_data == NULL)\r
843 return 0; // SRam forcefully disabled for this game\r
844\r
845 if (load)\r
846 {\r
847 sramFile = fopen(saveFname, "rb");\r
848 if (!sramFile)\r
849 return -1;\r
850 ret = fread(sram_data, 1, sram_size, sramFile);\r
851 ret = ret > 0 ? 0 : -1;\r
852 fclose(sramFile);\r
853 if ((PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_RAMCART))\r
854 memcpy32((int *)Pico_mcd->bram, (int *)sram_data, 0x2000/4);\r
855 } else {\r
856 // sram save needs some special processing\r
857 // see if we have anything to save\r
858 for (; sram_size > 0; sram_size--)\r
859 if (sram_data[sram_size-1]) break;\r
860\r
861 if (sram_size) {\r
862 sramFile = fopen(saveFname, truncate ? "wb" : "r+b");\r
863 if (!sramFile) sramFile = fopen(saveFname, "wb"); // retry\r
864 if (!sramFile) return -1;\r
865 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
866 ret = (ret != sram_size) ? -1 : 0;\r
867 fclose(sramFile);\r
868#ifdef __GP2X__\r
869 sync();\r
870#endif\r
871 }\r
872 }\r
873 return ret;\r
874 }\r
875 else\r
876 {\r
877 ret = PicoState(saveFname, !load);\r
878 if (!ret) {\r
879#ifdef __GP2X__\r
880 if (!load) sync();\r
881#endif\r
882 emu_status_msg(load ? "STATE LOADED" : "STATE SAVED");\r
883 } else {\r
884 emu_status_msg(load ? "LOAD FAILED" : "SAVE FAILED");\r
885 ret = -1;\r
886 }\r
887\r
888 return ret;\r
889 }\r
890}\r
891\r
892void emu_set_fastforward(int set_on)\r
893{\r
894 static void *set_PsndOut = NULL;\r
895 static int set_Frameskip, set_EmuOpt, is_on = 0;\r
896\r
897 if (set_on && !is_on) {\r
898 set_PsndOut = PsndOut;\r
899 set_Frameskip = currentConfig.Frameskip;\r
900 set_EmuOpt = currentConfig.EmuOpt;\r
901 PsndOut = NULL;\r
902 currentConfig.Frameskip = 8;\r
903 currentConfig.EmuOpt &= ~4;\r
904 currentConfig.EmuOpt |= 0x40000;\r
905 is_on = 1;\r
906 emu_status_msg("FAST FORWARD");\r
907 }\r
908 else if (!set_on && is_on) {\r
909 PsndOut = set_PsndOut;\r
910 currentConfig.Frameskip = set_Frameskip;\r
911 currentConfig.EmuOpt = set_EmuOpt;\r
912 PsndRerate(1);\r
913 is_on = 0;\r
914 }\r
915}\r
916\r
917static void emu_tray_open(void)\r
918{\r
919 engineState = PGS_TrayMenu;\r
920}\r
921\r
922static void emu_tray_close(void)\r
923{\r
924 emu_status_msg("CD tray closed.");\r
925}\r
926\r
927void emu_32x_startup(void)\r
928{\r
929 plat_video_toggle_renderer(0, 0); // HACK\r
930 system_announce();\r
931}\r
932\r
933void emu_reset_game(void)\r
934{\r
935 PicoReset();\r
936 reset_timing = 1;\r
937}\r
938\r
939void run_events_pico(unsigned int events)\r
940{\r
941 int lim_x;\r
942\r
943 if (events & PEV_PICO_SWINP) {\r
944 pico_inp_mode++;\r
945 if (pico_inp_mode > 2)\r
946 pico_inp_mode = 0;\r
947 switch (pico_inp_mode) {\r
948 case 2: emu_status_msg("Input: Pen on Pad"); break;\r
949 case 1: emu_status_msg("Input: Pen on Storyware"); break;\r
950 case 0: emu_status_msg("Input: Joystick");\r
951 PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
952 break;\r
953 }\r
954 }\r
955 if (events & PEV_PICO_PPREV) {\r
956 PicoPicohw.page--;\r
957 if (PicoPicohw.page < 0)\r
958 PicoPicohw.page = 0;\r
959 emu_status_msg("Page %i", PicoPicohw.page);\r
960 }\r
961 if (events & PEV_PICO_PNEXT) {\r
962 PicoPicohw.page++;\r
963 if (PicoPicohw.page > 6)\r
964 PicoPicohw.page = 6;\r
965 emu_status_msg("Page %i", PicoPicohw.page);\r
966 }\r
967\r
968 if (pico_inp_mode == 0)\r
969 return;\r
970\r
971 /* handle other input modes */\r
972 if (PicoPad[0] & 1) pico_pen_y--;\r
973 if (PicoPad[0] & 2) pico_pen_y++;\r
974 if (PicoPad[0] & 4) pico_pen_x--;\r
975 if (PicoPad[0] & 8) pico_pen_x++;\r
976 PicoPad[0] &= ~0x0f; // release UDLR\r
977\r
978 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
979 if (pico_pen_y < 8)\r
980 pico_pen_y = 8;\r
981 if (pico_pen_y > 224 - PICO_PEN_ADJUST_Y)\r
982 pico_pen_y = 224 - PICO_PEN_ADJUST_Y;\r
983 if (pico_pen_x < 0)\r
984 pico_pen_x = 0;\r
985 if (pico_pen_x > lim_x - PICO_PEN_ADJUST_X)\r
986 pico_pen_x = lim_x - PICO_PEN_ADJUST_X;\r
987\r
988 PicoPicohw.pen_pos[0] = pico_pen_x;\r
989 if (!(Pico.video.reg[12] & 1))\r
990 PicoPicohw.pen_pos[0] += pico_pen_x / 4;\r
991 PicoPicohw.pen_pos[0] += 0x3c;\r
992 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
993}\r
994\r
995static void do_turbo(int *pad, int acts)\r
996{\r
997 static int turbo_pad = 0;\r
998 static unsigned char turbo_cnt[3] = { 0, 0, 0 };\r
999 int inc = currentConfig.turbo_rate * 2;\r
1000\r
1001 if (acts & 0x1000) {\r
1002 turbo_cnt[0] += inc;\r
1003 if (turbo_cnt[0] >= 60)\r
1004 turbo_pad ^= 0x10, turbo_cnt[0] = 0;\r
1005 }\r
1006 if (acts & 0x2000) {\r
1007 turbo_cnt[1] += inc;\r
1008 if (turbo_cnt[1] >= 60)\r
1009 turbo_pad ^= 0x20, turbo_cnt[1] = 0;\r
1010 }\r
1011 if (acts & 0x4000) {\r
1012 turbo_cnt[2] += inc;\r
1013 if (turbo_cnt[2] >= 60)\r
1014 turbo_pad ^= 0x40, turbo_cnt[2] = 0;\r
1015 }\r
1016 *pad |= turbo_pad & (acts >> 8);\r
1017}\r
1018\r
1019static void run_events_ui(unsigned int which)\r
1020{\r
1021 if (which & (PEV_STATE_LOAD|PEV_STATE_SAVE))\r
1022 {\r
1023 int do_it = 1;\r
1024 if ( emu_check_save_file(state_slot, NULL) &&\r
1025 (((which & PEV_STATE_LOAD) && (currentConfig.confirm_save & EOPT_CONFIRM_LOAD)) ||\r
1026 ((which & PEV_STATE_SAVE) && (currentConfig.confirm_save & EOPT_CONFIRM_SAVE))) )\r
1027 {\r
1028 const char *nm;\r
1029 char tmp[64];\r
1030 int keys, len;\r
1031\r
1032 strcpy(tmp, (which & PEV_STATE_LOAD) ? "LOAD STATE?" : "OVERWRITE SAVE?");\r
1033 len = strlen(tmp);\r
1034 nm = in_get_key_name(-1, -PBTN_MA3);\r
1035 snprintf(tmp + len, sizeof(tmp) - len, "(%s=yes, ", nm);\r
1036 len = strlen(tmp);\r
1037 nm = in_get_key_name(-1, -PBTN_MBACK);\r
1038 snprintf(tmp + len, sizeof(tmp) - len, "%s=no)", nm);\r
1039\r
1040 plat_status_msg_busy_first(tmp);\r
1041\r
1042 in_set_config_int(0, IN_CFG_BLOCKING, 1);\r
1043 while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))\r
1044 ;\r
1045 while ( !((keys = in_menu_wait_any(NULL, 50)) & (PBTN_MA3|PBTN_MBACK)) )\r
1046 ;\r
1047 if (keys & PBTN_MBACK)\r
1048 do_it = 0;\r
1049 while (in_menu_wait_any(NULL, 50) & (PBTN_MA3|PBTN_MBACK))\r
1050 ;\r
1051 in_set_config_int(0, IN_CFG_BLOCKING, 0);\r
1052 }\r
1053 if (do_it) {\r
1054 plat_status_msg_busy_first((which & PEV_STATE_LOAD) ? "LOADING STATE" : "SAVING STATE");\r
1055 PicoStateProgressCB = plat_status_msg_busy_next;\r
1056 emu_save_load_game((which & PEV_STATE_LOAD) ? 1 : 0, 0);\r
1057 PicoStateProgressCB = NULL;\r
1058 }\r
1059 }\r
1060 if (which & PEV_SWITCH_RND)\r
1061 {\r
1062 plat_video_toggle_renderer(1, 0);\r
1063 }\r
1064 if (which & (PEV_SSLOT_PREV|PEV_SSLOT_NEXT))\r
1065 {\r
1066 if (which & PEV_SSLOT_PREV) {\r
1067 state_slot -= 1;\r
1068 if (state_slot < 0)\r
1069 state_slot = 9;\r
1070 } else {\r
1071 state_slot += 1;\r
1072 if (state_slot > 9)\r
1073 state_slot = 0;\r
1074 }\r
1075\r
1076 emu_status_msg("SAVE SLOT %i [%s]", state_slot,\r
1077 emu_check_save_file(state_slot, NULL) ? "USED" : "FREE");\r
1078 }\r
1079 if (which & PEV_MENU)\r
1080 engineState = PGS_Menu;\r
1081}\r
1082\r
1083void emu_update_input(void)\r
1084{\r
1085 static int prev_events = 0;\r
1086 int actions[IN_BINDTYPE_COUNT] = { 0, };\r
1087 int pl_actions[2];\r
1088 int events;\r
1089\r
1090 in_update(actions);\r
1091\r
1092 pl_actions[0] = actions[IN_BINDTYPE_PLAYER12];\r
1093 pl_actions[1] = actions[IN_BINDTYPE_PLAYER12] >> 16;\r
1094\r
1095 PicoPad[0] = pl_actions[0] & 0xfff;\r
1096 PicoPad[1] = pl_actions[1] & 0xfff;\r
1097\r
1098 if (pl_actions[0] & 0x7000)\r
1099 do_turbo(&PicoPad[0], pl_actions[0]);\r
1100 if (pl_actions[1] & 0x7000)\r
1101 do_turbo(&PicoPad[1], pl_actions[1]);\r
1102\r
1103 events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1104\r
1105 // volume is treated in special way and triggered every frame\r
1106 if (events & (PEV_VOL_DOWN|PEV_VOL_UP))\r
1107 plat_update_volume(1, events & PEV_VOL_UP);\r
1108\r
1109 if ((events ^ prev_events) & PEV_FF) {\r
1110 emu_set_fastforward(events & PEV_FF);\r
1111 plat_update_volume(0, 0);\r
1112 reset_timing = 1;\r
1113 }\r
1114\r
1115 events &= ~prev_events;\r
1116\r
1117 if (PicoAHW == PAHW_PICO)\r
1118 run_events_pico(events);\r
1119 if (events)\r
1120 run_events_ui(events);\r
1121 if (movie_data)\r
1122 update_movie();\r
1123\r
1124 prev_events = actions[IN_BINDTYPE_EMU] & PEV_MASK;\r
1125}\r
1126\r
1127static void mkdir_path(char *path_with_reserve, int pos, const char *name)\r
1128{\r
1129 strcpy(path_with_reserve + pos, name);\r
1130 if (plat_is_dir(path_with_reserve))\r
1131 return;\r
1132 if (mkdir(path_with_reserve, 0777) < 0)\r
1133 lprintf("failed to create: %s\n", path_with_reserve);\r
1134}\r
1135\r
1136void emu_cmn_forced_frame(int no_scale, int do_emu)\r
1137{\r
1138 int po_old = PicoOpt;\r
1139\r
1140 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
1141\r
1142 PicoOpt &= ~POPT_ALT_RENDERER;\r
1143 PicoOpt |= POPT_ACC_SPRITES;\r
1144 if (!no_scale)\r
1145 PicoOpt |= POPT_EN_SOFTSCALE;\r
1146\r
1147 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
1148 Pico.m.dirtyPal = 1;\r
1149 if (do_emu)\r
1150 PicoFrame();\r
1151 else\r
1152 PicoFrameDrawOnly();\r
1153\r
1154 PicoOpt = po_old;\r
1155}\r
1156\r
1157void emu_init(void)\r
1158{\r
1159 char path[512];\r
1160 int pos;\r
1161\r
1162#if 0\r
1163 // FIXME: handle through menu, etc\r
1164 FILE *f;\r
1165 f = fopen("32X_M_BIOS.BIN", "rb");\r
1166 p32x_bios_m = malloc(2048);\r
1167 fread(p32x_bios_m, 1, 2048, f);\r
1168 fclose(f);\r
1169 f = fopen("32X_S_BIOS.BIN", "rb");\r
1170 p32x_bios_s = malloc(1024);\r
1171 fread(p32x_bios_s, 1, 1024, f);\r
1172 fclose(f);\r
1173#endif\r
1174\r
1175 /* make dirs for saves */\r
1176 pos = plat_get_root_dir(path, sizeof(path) - 4);\r
1177 mkdir_path(path, pos, "mds");\r
1178 mkdir_path(path, pos, "srm");\r
1179 mkdir_path(path, pos, "brm");\r
1180 mkdir_path(path, pos, "cfg");\r
1181\r
1182 pprof_init();\r
1183\r
1184 make_config_cfg(path);\r
1185 config_readlrom(path);\r
1186\r
1187 PicoInit();\r
1188 PicoMessage = plat_status_msg_busy_next;\r
1189 PicoMCDopenTray = emu_tray_open;\r
1190 PicoMCDcloseTray = emu_tray_close;\r
1191\r
1192 sndout_init();\r
1193}\r
1194\r
1195void emu_finish(void)\r
1196{\r
1197 // save SRAM\r
1198 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {\r
1199 emu_save_load_game(0, 1);\r
1200 SRam.changed = 0;\r
1201 }\r
1202\r
1203 if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {\r
1204 char cfg[512];\r
1205 make_config_cfg(cfg);\r
1206 config_writelrom(cfg);\r
1207#ifdef __GP2X__\r
1208 sync();\r
1209#endif\r
1210 }\r
1211\r
1212 pprof_finish();\r
1213\r
1214 PicoExit();\r
1215 sndout_exit();\r
1216}\r
1217\r
1218static void snd_write_nonblocking(int len)\r
1219{\r
1220 sndout_write_nb(PsndOut, len);\r
1221}\r
1222\r
1223void emu_sound_start(void)\r
1224{\r
1225 PsndOut = NULL;\r
1226\r
1227 if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
1228 {\r
1229 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
1230\r
1231 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
1232\r
1233 printf("starting audio: %i len: %i stereo: %i, pal: %i\n",\r
1234 PsndRate, PsndLen, is_stereo, Pico.m.pal);\r
1235 sndout_start(PsndRate, is_stereo);\r
1236 PicoWriteSound = snd_write_nonblocking;\r
1237 plat_update_volume(0, 0);\r
1238 memset(sndBuffer, 0, sizeof(sndBuffer));\r
1239 PsndOut = sndBuffer;\r
1240 }\r
1241}\r
1242\r
1243void emu_sound_stop(void)\r
1244{\r
1245 sndout_stop();\r
1246}\r
1247\r
1248void emu_sound_wait(void)\r
1249{\r
1250 sndout_wait();\r
1251}\r
1252\r
1253static void emu_loop_prep(void)\r
1254{\r
1255 static int pal_old = -1;\r
1256 static int filter_old = -1;\r
1257\r
1258 if (currentConfig.CPUclock != plat_target_cpu_clock_get())\r
1259 plat_target_cpu_clock_set(currentConfig.CPUclock);\r
1260\r
1261 if (Pico.m.pal != pal_old) {\r
1262 plat_target_lcdrate_set(Pico.m.pal);\r
1263 pal_old = Pico.m.pal;\r
1264 }\r
1265\r
1266 if (currentConfig.filter != filter_old) {\r
1267 plat_target_hwfilter_set(currentConfig.filter);\r
1268 filter_old = currentConfig.filter;\r
1269 }\r
1270\r
1271 plat_target_gamma_set(currentConfig.gamma, 0);\r
1272\r
1273 pemu_loop_prep();\r
1274}\r
1275\r
1276static void skip_frame(int do_audio)\r
1277{\r
1278 PicoSkipFrame = do_audio ? 1 : 2;\r
1279 PicoFrame();\r
1280 PicoSkipFrame = 0;\r
1281}\r
1282\r
1283/* our tick here is 1 us right now */\r
1284#define ms_to_ticks(x) (unsigned int)(x * 1000)\r
1285#define get_ticks() plat_get_ticks_us()\r
1286\r
1287void emu_loop(void)\r
1288{\r
1289 int pframes_done; /* "period" frames, used for sync */\r
1290 int frames_done, frames_shown; /* actual frames for fps counter */\r
1291 int target_fps, target_frametime;\r
1292 unsigned int timestamp_base = 0, timestamp_fps;\r
1293 char *notice_msg = NULL;\r
1294 char fpsbuff[24];\r
1295 int i;\r
1296\r
1297 fpsbuff[0] = 0;\r
1298\r
1299 PicoLoopPrepare();\r
1300\r
1301 // prepare CD buffer\r
1302 if (PicoAHW & PAHW_MCD)\r
1303 PicoCDBufferInit();\r
1304\r
1305 plat_video_loop_prepare();\r
1306 emu_loop_prep();\r
1307 pemu_sound_start();\r
1308\r
1309 /* number of ticks per frame */\r
1310 if (Pico.m.pal) {\r
1311 target_fps = 50;\r
1312 target_frametime = ms_to_ticks(1000) / 50;\r
1313 } else {\r
1314 target_fps = 60;\r
1315 target_frametime = ms_to_ticks(1000) / 60 + 1;\r
1316 }\r
1317\r
1318 timestamp_fps = get_ticks();\r
1319 reset_timing = 1;\r
1320\r
1321 frames_done = frames_shown = pframes_done = 0;\r
1322\r
1323 plat_video_wait_vsync();\r
1324\r
1325 /* loop with resync every 1 sec. */\r
1326 while (engineState == PGS_Running)\r
1327 {\r
1328 unsigned int timestamp;\r
1329 int diff, diff_lim;\r
1330\r
1331 pprof_start(main);\r
1332\r
1333 timestamp = get_ticks();\r
1334 if (reset_timing) {\r
1335 reset_timing = 0;\r
1336 timestamp_base = timestamp;\r
1337 pframes_done = 0;\r
1338 }\r
1339\r
1340 // show notice_msg message?\r
1341 if (notice_msg_time != 0)\r
1342 {\r
1343 static int noticeMsgSum;\r
1344 if (timestamp - ms_to_ticks(notice_msg_time) > ms_to_ticks(STATUS_MSG_TIMEOUT)) {\r
1345 notice_msg_time = 0;\r
1346 plat_status_msg_clear();\r
1347 notice_msg = NULL;\r
1348 } else {\r
1349 int sum = noticeMsg[0] + noticeMsg[1] + noticeMsg[2];\r
1350 if (sum != noticeMsgSum) {\r
1351 plat_status_msg_clear();\r
1352 noticeMsgSum = sum;\r
1353 }\r
1354 notice_msg = noticeMsg;\r
1355 }\r
1356 }\r
1357\r
1358 // second changed?\r
1359 if (timestamp - timestamp_fps >= ms_to_ticks(1000))\r
1360 {\r
1361#ifdef BENCHMARK\r
1362 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1363 if (++bench == 10) {\r
1364 bench = 0;\r
1365 bench_fps_s = bench_fps;\r
1366 bf[bfp++ & 3] = bench_fps;\r
1367 bench_fps = 0;\r
1368 }\r
1369 bench_fps += frames_shown;\r
1370 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1371 printf("%s\n", fpsbuff);\r
1372#else\r
1373 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
1374 sprintf(fpsbuff, "%02i/%02i ", frames_shown, frames_done);\r
1375#endif\r
1376 frames_shown = frames_done = 0;\r
1377 timestamp_fps += ms_to_ticks(1000);\r
1378 }\r
1379#ifdef PFRAMES\r
1380 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
1381#endif\r
1382\r
1383 if (timestamp - timestamp_base >= ms_to_ticks(1000))\r
1384 {\r
1385 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && currentConfig.Frameskip >= 0)\r
1386 pframes_done = 0;\r
1387 else\r
1388 pframes_done -= target_fps;\r
1389 if (pframes_done < -2) {\r
1390 /* don't drag more than 2 frames behind */\r
1391 pframes_done = -2;\r
1392 timestamp_base = timestamp - 2 * target_frametime;\r
1393 }\r
1394 else\r
1395 timestamp_base += ms_to_ticks(1000);\r
1396 }\r
1397\r
1398 diff = timestamp - timestamp_base;\r
1399 diff_lim = (pframes_done + 1) * target_frametime;\r
1400\r
1401 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
1402 {\r
1403 for (i = 0; i < currentConfig.Frameskip; i++) {\r
1404 emu_update_input();\r
1405 skip_frame(1);\r
1406 pframes_done++; frames_done++;\r
1407 diff_lim += target_frametime;\r
1408\r
1409 if (!(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT))) {\r
1410 timestamp = get_ticks();\r
1411 diff = timestamp - timestamp_base;\r
1412 if (!reset_timing && diff < diff_lim) // we are too fast\r
1413 plat_wait_till_us(timestamp_base + diff_lim);\r
1414 }\r
1415 }\r
1416 }\r
1417 else if (diff > diff_lim)\r
1418 {\r
1419 /* no time left for this frame - skip */\r
1420 /* limit auto frameskip to 8 */\r
1421 if (frames_done / 8 <= frames_shown) {\r
1422 emu_update_input();\r
1423 skip_frame(diff < diff_lim + target_frametime * 16);\r
1424 pframes_done++; frames_done++;\r
1425 continue;\r
1426 }\r
1427 }\r
1428\r
1429 emu_update_input();\r
1430 PicoFrame();\r
1431 pemu_finalize_frame(fpsbuff, notice_msg);\r
1432\r
1433 if (!flip_after_sync)\r
1434 plat_video_flip();\r
1435\r
1436 /* frame limiter */\r
1437 if (!reset_timing && !(currentConfig.EmuOpt & (EOPT_NO_FRMLIMIT|EOPT_EXT_FRMLIMIT)))\r
1438 {\r
1439 timestamp = get_ticks();\r
1440 diff = timestamp - timestamp_base;\r
1441\r
1442 // sleep or vsync if we are still too fast\r
1443 if (diff < diff_lim)\r
1444 {\r
1445 // we are too fast\r
1446 plat_wait_till_us(timestamp_base + diff_lim - target_frametime / 4);\r
1447 if (currentConfig.EmuOpt & EOPT_VSYNC)\r
1448 plat_video_wait_vsync();\r
1449 }\r
1450 }\r
1451\r
1452 if (flip_after_sync)\r
1453 plat_video_flip();\r
1454\r
1455 pframes_done++; frames_done++; frames_shown++;\r
1456\r
1457 pprof_end(main);\r
1458 }\r
1459\r
1460 emu_set_fastforward(0);\r
1461\r
1462 // save SRAM\r
1463 if ((currentConfig.EmuOpt & EOPT_EN_SRAM) && SRam.changed) {\r
1464 plat_status_msg_busy_first("Writing SRAM/BRAM...");\r
1465 emu_save_load_game(0, 1);\r
1466 SRam.changed = 0;\r
1467 }\r
1468\r
1469 pemu_loop_end();\r
1470 emu_sound_stop();\r
1471\r
1472 // pemu_loop_end() might want to do 1 frame for bg image,\r
1473 // so free CD buffer here\r
1474 if (PicoAHW & PAHW_MCD)\r
1475 PicoCDBufferFree();\r
1476}\r
1477\r
fast MegaDrive/MegaCD/32X emulator