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1.14 release
[libpicofe.git] / gp2x / emu.c
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720ee7f6 1// (c) Copyright 2006 notaz, All rights reserved.\r
2// Free for non-commercial use.\r
3\r
4// For commercial use, separate licencing terms must be obtained.\r
5\r
6#include <stdio.h>\r
7#include <stdlib.h>\r
8#include <sys/time.h>\r
9#include <linux/limits.h>\r
10#include <ctype.h>\r
11#include <unistd.h>\r
12\r
13#include <stdarg.h>\r
14\r
15#include "emu.h"\r
16#include "gp2x.h"\r
17#include "usbjoy.h"\r
18#include "menu.h"\r
19#include "asmutils.h"\r
20#include "cpuctrl.h"\r
21\r
22#include "Pico/PicoInt.h"\r
23#include "zlib/zlib.h"\r
24\r
25\r
26#ifdef BENCHMARK\r
27#define OSD_FPS_X 220\r
28#else\r
29#define OSD_FPS_X 260\r
30#endif\r
31\r
32// PicoPad[] format: SACB RLDU\r
33char *actionNames[] = {\r
34 "UP", "DOWN", "LEFT", "RIGHT", "B", "C", "A", "START",\r
35 0, 0, 0, 0, 0, 0, 0, 0, // Z, Y, X, MODE (enabled only when needed), ?, ?, ?, ?\r
36 0, 0, 0, 0, 0, 0, 0, "ENTER MENU", // player2_flag, ?, ?, ?, ?, ?, ?, menu\r
37 "NEXT SAVE SLOT", "PREV SAVE SLOT", "SWITCH RENDERER", "SAVE STATE",\r
38 "LOAD STATE", "VOLUME UP", "VOLUME DOWN", "DONE"\r
39};\r
40\r
41int engineState;\r
42int select_exits = 0;\r
43char *PicoConfigFile = "picoconfig.bin";\r
44currentConfig_t currentConfig;\r
45\r
46char romFileName[PATH_MAX];\r
47unsigned char *rom_data = NULL;\r
48\r
49extern int crashed_940;\r
50\r
51static char noticeMsg[64]; // notice msg to draw\r
52static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
53static int reset_timing, osd_fps_x;\r
54static int combo_keys = 0, combo_acts = 0; // keys and actions which need button combos\r
55static int gp2x_old_gamma = 100;\r
56static unsigned char *movie_data = NULL;\r
57static int movie_size = 0;\r
720ee7f6 58unsigned char *framebuff = 0; // temporary buffer for alt renderer\r
59int state_slot = 0;\r
60\r
61/*\r
62// tmp\r
63static FILE *logf = NULL;\r
64\r
65void pprintf(char *texto, ...)\r
66{\r
67 va_list args;\r
68\r
69 va_start(args,texto);\r
70 vfprintf(logf,texto,args);\r
71 va_end(args);\r
72 fflush(logf);\r
73 sync();\r
74}\r
75*/\r
76// utilities\r
77static void strlwr(char* string)\r
78{\r
79 while ( (*string++ = (char)tolower(*string)) );\r
80}\r
81\r
5111820c 82static int try_rfn_cut(void)\r
720ee7f6 83{\r
84 FILE *tmp;\r
85 char *p;\r
86\r
5111820c 87 p = romFileName + strlen(romFileName) - 1;\r
88 for (; p > romFileName; p--)\r
89 if (*p == '.') break;\r
90 *p = 0;\r
720ee7f6 91\r
92 if((tmp = fopen(romFileName, "rb"))) {\r
93 fclose(tmp);\r
94 return 1;\r
95 }\r
96 return 0;\r
97}\r
98\r
daf91588 99static void get_ext(char *file, char *ext)\r
25fced50 100{\r
101 char *p;\r
102\r
daf91588 103 p = file + strlen(file) - 4;\r
104 if (p < file) p = file;\r
25fced50 105 strncpy(ext, p, 4);\r
106 ext[4] = 0;\r
107 strlwr(ext);\r
108}\r
109\r
daf91588 110char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };\r
111char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210" };\r
112char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
113\r
114extern char **g_argv;\r
115\r
116int find_bios(int region, char **bios_file)\r
117{\r
118 static char bios_path[1024];\r
119 int i, j, count;\r
120 char **files;\r
121 FILE *f = NULL;\r
122\r
123 if (region == 4) { // US\r
124 files = biosfiles_us;\r
125 count = sizeof(biosfiles_us) / sizeof(char *);\r
126 } else if (region == 8) { // EU\r
127 files = biosfiles_eu;\r
128 count = sizeof(biosfiles_eu) / sizeof(char *);\r
129 } else if (region == 1 || region == 2) {\r
130 files = biosfiles_jp;\r
131 count = sizeof(biosfiles_jp) / sizeof(char *);\r
132 } else {\r
133 return 0;\r
134 }\r
135\r
136 for (i = 0; i < count; i++)\r
137 {\r
138 strncpy(bios_path, g_argv[0], 1023);\r
139 bios_path[1024-32] = 0;\r
140 for (j = strlen(bios_path); j > 0; j--)\r
141 if (bios_path[j] == '/') { bios_path[j+1] = 0; break; }\r
142 strcat(bios_path, files[i]);\r
143 strcat(bios_path, ".bin");\r
144 f = fopen(bios_path, "rb");\r
145 if (f) break;\r
146\r
147 bios_path[strlen(bios_path) - 4] = 0;\r
148 strcat(bios_path, ".zip");\r
149 f = fopen(bios_path, "rb");\r
150 if (f) break;\r
151 }\r
152\r
153 if (f) {\r
154 printf("using bios: %s\n", bios_path);\r
155 fclose(f);\r
156 if (bios_file) *bios_file = bios_path;\r
157 return 1;\r
158 } else {\r
159 sprintf(menuErrorMsg, "no %s BIOS files found, read docs",\r
160 region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
161 printf("%s\n", menuErrorMsg);\r
162 return 0;\r
163 }\r
164}\r
165\r
166/* checks if romFileName points to valid MegaCD image\r
167 * if so, checks for suitable BIOS */\r
168static int cd_check(char *ext, char **bios_file)\r
169{\r
170 unsigned char buf[32];\r
171 FILE *cd_f;\r
172 int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe\r
173\r
174 cd_f = fopen(romFileName, "rb");\r
175 if (!cd_f) return 0; // let the upper level handle this\r
176\r
177 if (fread(buf, 1, 32, cd_f) != 32) {\r
178 fclose(cd_f);\r
179 return 0;\r
180 }\r
181\r
182 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1; // Sega CD (ISO)\r
183 if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2; // Sega CD (BIN)\r
184 if (type == 0) {\r
185 fclose(cd_f);\r
186 return 0;\r
187 }\r
188\r
189 /* it seems we have a CD image here. Try to detect region and load a suitable BIOS now.. */\r
598e7c06 190 fseek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
daf91588 191 fread(buf, 1, 1, cd_f);\r
192 fclose(cd_f);\r
193\r
598e7c06 194 if (buf[0] == 0x64) region = 8; // EU\r
daf91588 195 if (buf[0] == 0xa1) region = 1; // JAP\r
196\r
197 printf("detected %s Sega/Mega CD image with %s region\n",\r
198 type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
199\r
200 if (PicoRegionOverride) {\r
201 region = PicoRegionOverride;\r
202 printf("overrided region to %s\n", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
203 }\r
204\r
205 if(find_bios(region, bios_file))\r
206 return type; // CD and BIOS detected\r
207\r
208 return -1; // CD detected but load failed\r
209}\r
210\r
720ee7f6 211int emu_ReloadRom(void)\r
212{\r
213 unsigned int rom_size = 0;\r
daf91588 214 char *used_rom_name = romFileName;\r
25fced50 215 char ext[5];\r
720ee7f6 216 FILE *rom;\r
daf91588 217 int ret, cd_state;\r
720ee7f6 218\r
219 printf("emu_ReloadRom(%s)\n", romFileName);\r
220\r
daf91588 221 get_ext(romFileName, ext);\r
720ee7f6 222\r
daf91588 223 // detect wrong extensions\r
720ee7f6 224 if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
225 sprintf(menuErrorMsg, "Not a ROM selected.");\r
226 return 0;\r
227 }\r
228\r
229 // check for movie file\r
230 if(movie_data) {\r
231 free(movie_data);\r
232 movie_data = 0;\r
233 }\r
234 if(!strcmp(ext, ".gmv")) {\r
235 // check for both gmv and rom\r
236 int dummy;\r
237 FILE *movie_file = fopen(romFileName, "rb");\r
238 if(!movie_file) {\r
239 sprintf(menuErrorMsg, "Failed to open movie.");\r
240 return 0;\r
241 }\r
242 fseek(movie_file, 0, SEEK_END);\r
243 movie_size = ftell(movie_file);\r
244 fseek(movie_file, 0, SEEK_SET);\r
245 if(movie_size < 64+3) {\r
246 sprintf(menuErrorMsg, "Invalid GMV file.");\r
247 fclose(movie_file);\r
248 return 0;\r
249 }\r
250 movie_data = malloc(movie_size);\r
251 if(movie_data == NULL) {\r
252 sprintf(menuErrorMsg, "low memory.");\r
253 fclose(movie_file);\r
254 return 0;\r
255 }\r
256 fread(movie_data, 1, movie_size, movie_file);\r
257 fclose(movie_file);\r
258 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
259 sprintf(menuErrorMsg, "Invalid GMV file.");\r
260 return 0;\r
261 }\r
5111820c 262 dummy = try_rfn_cut() || try_rfn_cut();\r
720ee7f6 263 if (!dummy) {\r
264 sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
265 return 0;\r
266 }\r
daf91588 267 get_ext(romFileName, ext);\r
720ee7f6 268 }\r
269\r
daf91588 270 // check for MegaCD image\r
271 cd_state = cd_check(ext, &used_rom_name);\r
272 if (cd_state > 0) {\r
273 PicoMCD |= 1;\r
274 get_ext(used_rom_name, ext);\r
275 } else if (cd_state == -1) {\r
276 // bios_help() ?\r
277 return 0;\r
278 } else {\r
49fe50f0 279 if (PicoMCD & 1) PicoExitMCD();\r
daf91588 280 PicoMCD &= ~1;\r
281 }\r
282\r
283 rom = fopen(used_rom_name, "rb");\r
720ee7f6 284 if(!rom) {\r
285 sprintf(menuErrorMsg, "Failed to open rom.");\r
286 return 0;\r
287 }\r
288\r
289 if(rom_data) {\r
290 free(rom_data);\r
291 rom_data = 0;\r
292 rom_size = 0;\r
293 }\r
294\r
295 // zipfile support\r
296 if(!strcasecmp(ext, ".zip")) {\r
297 fclose(rom);\r
daf91588 298 ret = CartLoadZip(used_rom_name, &rom_data, &rom_size);\r
720ee7f6 299 if(ret) {\r
daf91588 300 if (ret == 4) strcpy(menuErrorMsg, "No ROMs found in zip.");\r
720ee7f6 301 else sprintf(menuErrorMsg, "Unzip failed with code %i", ret);\r
302 printf("%s\n", menuErrorMsg);\r
303 return 0;\r
304 }\r
305 } else {\r
306 if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
307 sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
308 printf("%s\n", menuErrorMsg);\r
309 fclose(rom);\r
310 return 0;\r
311 }\r
312 fclose(rom);\r
313 }\r
314\r
315 // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
316 if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
317 ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
318 if (rom_data) free(rom_data);\r
319 rom_data = 0;\r
320 sprintf(menuErrorMsg, "Not a ROM selected.");\r
321 return 0;\r
322 }\r
323\r
daf91588 324 // load config for this ROM (do this before insert to get correct region)\r
325 ret = emu_ReadConfig(1);\r
326 if (!ret)\r
327 emu_ReadConfig(0);\r
328\r
720ee7f6 329 printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
330 if(PicoCartInsert(rom_data, rom_size)) {\r
331 sprintf(menuErrorMsg, "Failed to load ROM.");\r
332 return 0;\r
333 }\r
334\r
daf91588 335 Pico.m.frame_count = 0;\r
336\r
337 // insert CD if it was detected\r
338 if (cd_state > 0) {\r
339 ret = Insert_CD(romFileName, cd_state == 2);\r
340 if (ret != 0) {\r
341 sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");\r
342 printf("%s\n", menuErrorMsg);\r
343 return 0;\r
344 }\r
345 }\r
720ee7f6 346\r
347 // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
348 strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
349 currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
350\r
351 // additional movie stuff\r
352 if(movie_data) {\r
353 if(movie_data[0x14] == '6')\r
354 PicoOpt |= 0x20; // 6 button pad\r
355 else PicoOpt &= ~0x20;\r
1a20dbc8 356 PicoOpt |= 0x40; // accurate timing\r
720ee7f6 357 if(movie_data[0xF] >= 'A') {\r
1a20dbc8 358 if(movie_data[0x16] & 0x80) {\r
359 PicoRegionOverride = 8;\r
360 } else {\r
361 PicoRegionOverride = 4;\r
362 }\r
363 PicoReset(0);\r
720ee7f6 364 // TODO: bits 6 & 5\r
365 }\r
1a20dbc8 366 movie_data[0x18+30] = 0;\r
367 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
720ee7f6 368 }\r
369 else\r
370 {\r
371 if(Pico.m.pal) {\r
372 strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
373 } else {\r
374 strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
375 }\r
376 }\r
377 gettimeofday(&noticeMsgTime, 0);\r
49fe50f0 378\r
720ee7f6 379 // load SRAM for this ROM\r
380 if(currentConfig.EmuOpt & 1)\r
381 emu_SaveLoadGame(1, 1);\r
382\r
720ee7f6 383 return 1;\r
384}\r
385\r
386\r
387void emu_Init(void)\r
388{\r
389 // make temp buffer for alt renderer\r
390 framebuff = malloc((8+320)*(8+240+8));\r
391 if (!framebuff)\r
392 {\r
393 printf("framebuff == 0\n");\r
394 }\r
395\r
396 PicoInit();\r
397\r
398// logf = fopen("log.txt", "w");\r
399}\r
400\r
401\r
402static void romfname_ext(char *dst, char *ext)\r
403{\r
404 char *p;\r
405\r
406 // make save filename\r
407 for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
408 strncpy(dst, p, 511);\r
409 dst[511-8] = 0;\r
410 if(dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
411 strcat(dst, ext);\r
412}\r
413\r
414\r
415static void find_combos(void)\r
416{\r
417 int act, u;\r
418\r
419 // find out which keys and actions are combos\r
420 combo_keys = combo_acts = 0;\r
421 for (act = 0; act < 32; act++)\r
422 {\r
423 int keyc = 0;\r
424 if (act == 16) continue; // player2 flag\r
425 for (u = 0; u < 32; u++)\r
426 {\r
427 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
428 }\r
429 if (keyc > 1)\r
430 {\r
431 // loop again and mark those keys and actions as combo\r
432 for (u = 0; u < 32; u++)\r
433 {\r
434 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
435 combo_keys |= 1 << u;\r
436 combo_acts |= 1 << act;\r
437 }\r
438 }\r
439 }\r
440 }\r
441 // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
442}\r
443\r
444\r
445int emu_ReadConfig(int game)\r
446{\r
447 FILE *f;\r
448 char cfg[512];\r
449 int bread = 0;\r
450\r
451 if (!game)\r
452 {\r
453 // set default config\r
454 memset(&currentConfig, 0, sizeof(currentConfig));\r
455 currentConfig.lastRomFile[0] = 0;\r
49fe50f0 456 currentConfig.EmuOpt = 0x1f | 0x400; // | cd_leds\r
457 currentConfig.PicoOpt = 0x0f | 0xe00; // | use_940 | cd_pcm | cd_cdda\r
7bc9cd7f 458 currentConfig.PsndRate = 22050; // 44100;\r
720ee7f6 459 currentConfig.PicoRegion = 0; // auto\r
979ba09f 460 currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
720ee7f6 461 currentConfig.Frameskip = -1; // auto\r
462 currentConfig.CPUclock = 200;\r
463 currentConfig.volume = 50;\r
464 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
465 currentConfig.KeyBinds[ 4] = 1<<1;\r
466 currentConfig.KeyBinds[ 2] = 1<<2;\r
467 currentConfig.KeyBinds[ 6] = 1<<3;\r
468 currentConfig.KeyBinds[14] = 1<<4;\r
469 currentConfig.KeyBinds[13] = 1<<5;\r
470 currentConfig.KeyBinds[12] = 1<<6;\r
471 currentConfig.KeyBinds[ 8] = 1<<7;\r
472 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
473 currentConfig.KeyBinds[10] = 1<<27; // save state\r
474 currentConfig.KeyBinds[11] = 1<<28; // load state\r
475 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
476 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
477 currentConfig.gamma = 100;\r
478 strncpy(cfg, PicoConfigFile, 511);\r
479 cfg[511] = 0;\r
480 } else {\r
481 romfname_ext(cfg, ".pbcfg");\r
482 }\r
483\r
484 printf("emu_ReadConfig: %s ", cfg);\r
485 f = fopen(cfg, "rb");\r
486 if (f) {\r
487 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
488 fclose(f);\r
489 }\r
490 printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
491\r
492 PicoOpt = currentConfig.PicoOpt;\r
493 PsndRate = currentConfig.PsndRate;\r
494 PicoRegionOverride = currentConfig.PicoRegion;\r
979ba09f 495 PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;\r
720ee7f6 496 if (PicoOpt & 0x20) {\r
497 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
498 actionNames[10] = "X"; actionNames[11] = "MODE";\r
499 }\r
500 // some sanity checks\r
501 if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
502 if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
503 // if volume keys are unbound, bind them to volume control\r
504 if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
505 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
506 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
507 }\r
508\r
509 return (bread == sizeof(currentConfig));\r
510}\r
511\r
512\r
513int emu_WriteConfig(int game)\r
514{\r
515 FILE *f;\r
516 char cfg[512];\r
517 int bwrite = 0;\r
518\r
519 if (!game)\r
520 {\r
521 strncpy(cfg, PicoConfigFile, 511);\r
522 cfg[511] = 0;\r
523 } else {\r
524 romfname_ext(cfg, ".pbcfg");\r
525 }\r
526\r
527 printf("emu_WriteConfig: %s ", cfg);\r
528 f = fopen(cfg, "wb");\r
529 if (f) {\r
530 currentConfig.PicoOpt = PicoOpt;\r
531 currentConfig.PsndRate = PsndRate;\r
532 currentConfig.PicoRegion = PicoRegionOverride;\r
979ba09f 533 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;\r
720ee7f6 534 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
535 fflush(f);\r
536 fclose(f);\r
537 sync();\r
538 }\r
539 printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
540\r
541 return (bwrite == sizeof(currentConfig));\r
542}\r
543\r
544\r
545void emu_Deinit(void)\r
546{\r
547 // save SRAM\r
548 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
549 emu_SaveLoadGame(0, 1);\r
550 SRam.changed = 0;\r
551 }\r
552\r
553 if (!(currentConfig.EmuOpt & 0x20))\r
554 emu_WriteConfig(0);\r
555 free(framebuff);\r
556\r
557 PicoExit();\r
558// fclose(logf);\r
559\r
560 // restore gamma\r
561 if (gp2x_old_gamma != 100)\r
562 set_gamma(100);\r
563}\r
564\r
565\r
566void osd_text(int x, int y, char *text)\r
567{\r
568 int len = strlen(text)*8;\r
569\r
570 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
daf91588 571 int *p, i, h;\r
720ee7f6 572 x &= ~3; // align x\r
573 len = (len+3) >> 2;\r
574 for (h = 0; h < 8; h++) {\r
575 p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
daf91588 576 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
720ee7f6 577 }\r
daf91588 578 gp2x_text_out8_2(x, y, text, 0xf0);\r
720ee7f6 579 } else {\r
580 int *p, i, h;\r
581 x &= ~1; // align x\r
582 len = (len+1) >> 1;\r
583 for (h = 0; h < 8; h++) {\r
584 p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
585 for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
586 }\r
587 gp2x_text_out15(x, y, text);\r
588 }\r
589}\r
590\r
daf91588 591static void cd_leds(void)\r
592{\r
8dfb9fd5 593 // mmu problems?\r
594// static\r
595 int old_reg;\r
596// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
daf91588 597 old_reg = Pico_mcd->s68k_regs[0];\r
598\r
599 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
600 // 8-bit modes\r
601 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
602 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
49fe50f0 603 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
604 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
605 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
606 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
607 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
608 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
daf91588 609 } else {\r
610 // 16-bit modes\r
49fe50f0 611 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
daf91588 612 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
613 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
49fe50f0 614 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
615 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
616 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
daf91588 617 }\r
618}\r
619\r
720ee7f6 620static int EmuScan16(unsigned int num, void *sdata)\r
621{\r
622 if (!(Pico.video.reg[1]&8)) num += 8;\r
623 DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
624\r
625 return 0;\r
626}\r
627\r
628static int EmuScan8(unsigned int num, void *sdata)\r
629{\r
630 if (!(Pico.video.reg[1]&8)) num += 8;\r
631 DrawLineDest = (unsigned char *) gp2x_screen + 320*(num+1);\r
632\r
633 return 0;\r
634}\r
635\r
636static int localPal[0x100];\r
637static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
638\r
639static void blit(char *fps, char *notice)\r
640{\r
daf91588 641 int emu_opt = currentConfig.EmuOpt;\r
642\r
720ee7f6 643 if (PicoOpt&0x10) {\r
644 // 8bit fast renderer\r
645 if (Pico.m.dirtyPal) {\r
646 Pico.m.dirtyPal = 0;\r
647 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
648 // feed new palette to our device\r
649 gp2x_video_setpalette(localPal, 0x40);\r
650 }\r
651 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
daf91588 652 } else if (!(emu_opt&0x80)) {\r
720ee7f6 653 // 8bit accurate renderer\r
654 if (Pico.m.dirtyPal) {\r
655 Pico.m.dirtyPal = 0;\r
656 if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
657 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
658 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
659 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
660 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
daf91588 661 localPal[0xc0] = 0x0000c000;\r
662 localPal[0xd0] = 0x00c00000;\r
720ee7f6 663 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
664 localPal[0xf0] = 0x00ffffff;\r
665 gp2x_video_setpalette(localPal, 0x100);\r
666 } else if (rendstatus & 0x20) { // mid-frame palette changes\r
667 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
668 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
669 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
670 gp2x_video_setpalette(localPal, 0xc0);\r
671 } else {\r
672 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
673 gp2x_video_setpalette(localPal, 0x40);\r
674 }\r
675 }\r
676 }\r
677\r
678 if (notice) osd_text(4, 232, notice);\r
daf91588 679 if (emu_opt & 2)\r
720ee7f6 680 osd_text(osd_fps_x, 232, fps);\r
daf91588 681 if ((emu_opt & 0x400) && (PicoMCD & 1))\r
682 cd_leds();\r
720ee7f6 683\r
684 //gp2x_video_wait_vsync();\r
685 gp2x_video_flip();\r
686\r
687 if (!(PicoOpt&0x10)) {\r
688 if (!(Pico.video.reg[1]&8)) {\r
689 if (currentConfig.EmuOpt&0x80) {\r
690 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
691 } else {\r
692 DrawLineDest = (unsigned char *) gp2x_screen + 320*8;\r
693 }\r
694 } else {\r
695 DrawLineDest = gp2x_screen;\r
696 }\r
697 }\r
698}\r
699\r
700\r
701// clears whole screen or just the notice area (in all buffers)\r
702static void clearArea(int full)\r
703{\r
daf91588 704 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
705 // 8-bit renderers\r
706 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
707 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
708 } else {\r
720ee7f6 709 // 16bit accurate renderer\r
710 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
711 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
720ee7f6 712 }\r
713}\r
714\r
715\r
716static void vidResetMode(void)\r
717{\r
718 if (PicoOpt&0x10) {\r
720ee7f6 719 gp2x_video_changemode(8);\r
720ee7f6 720 } else if (currentConfig.EmuOpt&0x80) {\r
721 gp2x_video_changemode(15);\r
722 PicoDrawSetColorFormat(1);\r
723 PicoScan = EmuScan16;\r
724 PicoScan(0, 0);\r
725 } else {\r
daf91588 726 gp2x_video_changemode(8);\r
727 PicoDrawSetColorFormat(2);\r
728 PicoScan = EmuScan8;\r
729 PicoScan(0, 0);\r
730 }\r
731 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
732 // setup pal for 8-bit modes\r
733 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
734 localPal[0xd0] = 0x00c00000;\r
720ee7f6 735 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
736 localPal[0xf0] = 0x00ffffff;\r
720ee7f6 737 gp2x_video_setpalette(localPal, 0x100);\r
738 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
739 gp2x_video_flip();\r
720ee7f6 740 }\r
741 Pico.m.dirtyPal = 1;\r
742 // reset scaling\r
743 gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
744}\r
745\r
746\r
747static int check_save_file(void)\r
748{\r
749 char saveFname[512];\r
750 char ext[16];\r
751 FILE *f;\r
752\r
753 ext[0] = 0;\r
754 if(state_slot > 0 && state_slot < 10) sprintf(ext, ".%i", state_slot);\r
755 strcat(ext, ".mds");\r
756 if(currentConfig.EmuOpt & 8) strcat(ext, ".gz");\r
757\r
758 romfname_ext(saveFname, ext);\r
759 if ((f = fopen(saveFname, "rb"))) {\r
760 fclose(f);\r
761 return 1;\r
762 }\r
763 return 0;\r
764}\r
765\r
766static void RunEvents(unsigned int which)\r
767{\r
768 if(which & 0x1800) { // save or load (but not both)\r
769 int do_it = 1;\r
770 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && check_save_file()) {\r
771 unsigned long keys;\r
772 blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
773 while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
774 usleep(50*1024);\r
775 if (keys & GP2X_X) do_it = 0;\r
776 clearArea(0);\r
777 }\r
778 if (do_it) {\r
779 blit("", (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
780 emu_SaveLoadGame(which & 0x1000, 0);\r
781 }\r
782\r
783 reset_timing = 1;\r
784 }\r
785 if(which & 0x0400) { // switch renderer\r
786 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
787 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
788 else currentConfig.EmuOpt &= ~0x80;\r
789\r
790 vidResetMode();\r
791\r
792 if (PicoOpt&0x10) {\r
793 strcpy(noticeMsg, " 8bit fast renderer");\r
794 } else if (currentConfig.EmuOpt&0x80) {\r
795 strcpy(noticeMsg, "16bit accurate renderer");\r
796 } else {\r
797 strcpy(noticeMsg, " 8bit accurate renderer");\r
798 }\r
799\r
800 gettimeofday(&noticeMsgTime, 0);\r
801 }\r
802 if(which & 0x0300) {\r
803 if(which&0x0200) {\r
804 state_slot -= 1;\r
805 if(state_slot < 0) state_slot = 9;\r
806 } else {\r
807 state_slot += 1;\r
808 if(state_slot > 9) state_slot = 0;\r
809 }\r
810 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, check_save_file() ? "USED" : "FREE");\r
811 gettimeofday(&noticeMsgTime, 0);\r
812 }\r
813 if(which & 0x0080) {\r
814 engineState = PGS_Menu;\r
815 }\r
816}\r
817\r
818\r
25fced50 819static void updateMovie(void)\r
820{\r
821 int offs = Pico.m.frame_count*3 + 0x40;\r
822 if (offs+3 > movie_size) {\r
823 free(movie_data);\r
824 movie_data = 0;\r
825 strcpy(noticeMsg, "END OF MOVIE.");\r
826 printf("END OF MOVIE.\n");\r
827 gettimeofday(&noticeMsgTime, 0);\r
828 } else {\r
829 // MXYZ SACB RLDU\r
830 PicoPad[0] = ~movie_data[offs] & 0x8f; // ! SCBA RLDU\r
831 if(!(movie_data[offs] & 0x10)) PicoPad[0] |= 0x40; // A\r
832 if(!(movie_data[offs] & 0x20)) PicoPad[0] |= 0x10; // B\r
833 if(!(movie_data[offs] & 0x40)) PicoPad[0] |= 0x20; // A\r
834 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
835 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
836 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
837 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
838 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
839 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
840 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
841 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
842 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
843 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
844 }\r
845}\r
846\r
847\r
720ee7f6 848static void updateKeys(void)\r
849{\r
850 unsigned long keys, allActions[2] = { 0, 0 }, events;\r
851 static unsigned long prevEvents = 0;\r
852 int joy, i;\r
853\r
854 keys = gp2x_joystick_read(0);\r
855 if (keys & GP2X_SELECT) {\r
856 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
857 // wait until select is released, so menu would not resume game\r
858 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
859 }\r
860\r
861 keys &= CONFIGURABLE_KEYS;\r
862\r
863 for (i = 0; i < 32; i++)\r
864 {\r
865 if (keys & (1 << i)) {\r
866 int pl, acts = currentConfig.KeyBinds[i];\r
867 if (!acts) continue;\r
868 pl = (acts >> 16) & 1;\r
869 if (combo_keys & (1 << i)) {\r
870 int u = i+1, acts_c = acts & combo_acts;\r
871 // let's try to find the other one\r
872 if (acts_c)\r
873 for (; u < 32; u++)\r
874 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
875 allActions[pl] |= acts_c;\r
876 keys &= ~((1 << i) | (1 << u));\r
877 break;\r
878 }\r
879 // add non-combo actions if combo ones were not found\r
880 if (!acts_c || u == 32)\r
881 allActions[pl] |= acts & ~combo_acts;\r
882 } else {\r
883 allActions[pl] |= acts;\r
884 }\r
885 }\r
886 }\r
887\r
888 // add joy inputs\r
889 if (num_of_joys > 0)\r
890 {\r
891 gp2x_usbjoy_update();\r
892 for (joy = 0; joy < num_of_joys; joy++) {\r
893 int keys = gp2x_usbjoy_check2(joy);\r
894 for (i = 0; i < 32; i++) {\r
895 if (keys & (1 << i)) {\r
896 int acts = currentConfig.JoyBinds[joy][i];\r
897 int pl = (acts >> 16) & 1;\r
898 allActions[pl] |= acts;\r
899 }\r
900 }\r
901 }\r
902 }\r
903\r
25fced50 904 PicoPad[0] = (unsigned short) allActions[0];\r
905 PicoPad[1] = (unsigned short) allActions[1];\r
720ee7f6 906\r
907 events = (allActions[0] | allActions[1]) >> 16;\r
908\r
909 // volume is treated in special way and triggered every frame\r
910 if(events & 0x6000) {\r
911 int vol = currentConfig.volume;\r
912 if (events & 0x2000) {\r
913 if (vol < 90) vol++;\r
914 } else {\r
915 if (vol > 0) vol--;\r
916 }\r
917 gp2x_sound_volume(vol, vol);\r
918 sprintf(noticeMsg, "VOL: %02i", vol);\r
919 gettimeofday(&noticeMsgTime, 0);\r
920 currentConfig.volume = vol;\r
921 }\r
922\r
923 events &= ~prevEvents;\r
924 if (events) RunEvents(events);\r
25fced50 925 if (movie_data) updateMovie();\r
720ee7f6 926\r
927 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
928}\r
929\r
930static int snd_excess_add = 0, snd_excess_cnt = 0; // hack\r
931\r
932static void updateSound(void)\r
933{\r
934 int len = (PicoOpt&8)?PsndLen*2:PsndLen;\r
935\r
936 snd_excess_cnt += snd_excess_add;\r
937 if (snd_excess_cnt >= 0x10000) {\r
938 snd_excess_cnt -= 0x10000;\r
939 if (PicoOpt&8) {\r
940 PsndOut[len] = PsndOut[len-2];\r
941 PsndOut[len+1] = PsndOut[len-1];\r
942 len+=2;\r
943 } else {\r
944 PsndOut[len] = PsndOut[len-1];\r
945 len++;\r
946 }\r
947 }\r
948\r
949 gp2x_sound_write(PsndOut, len<<1);\r
950}\r
951\r
952\r
953static void SkipFrame(int do_sound)\r
954{\r
955 void *sndbuff_tmp = 0;\r
956 if (PsndOut && !do_sound) {\r
957 sndbuff_tmp = PsndOut;\r
958 PsndOut = 0;\r
959 }\r
960\r
961 PicoSkipFrame=1;\r
962 PicoFrame();\r
963 PicoSkipFrame=0;\r
964\r
965 if (sndbuff_tmp && !do_sound) {\r
966 PsndOut = sndbuff_tmp;\r
967 }\r
968}\r
969\r
970\r
971static void simpleWait(int thissec, int lim_time)\r
972{\r
973 struct timeval tval;\r
974\r
975 spend_cycles(1024);\r
976 gettimeofday(&tval, 0);\r
977 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
978\r
979 while(tval.tv_usec < lim_time)\r
980 {\r
981 spend_cycles(1024);\r
982 gettimeofday(&tval, 0);\r
983 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
984 }\r
985}\r
986\r
987\r
988void emu_Loop(void)\r
989{\r
990 static int gp2x_old_clock = 200;\r
991 static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
992 char fpsbuff[24]; // fps count c string\r
993 struct timeval tval; // timing\r
994 int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
995 int target_fps, target_frametime, lim_time, i;\r
996 char *notice = 0;\r
997\r
998 printf("entered emu_Loop()\n");\r
999\r
1000 if (gp2x_old_clock != currentConfig.CPUclock) {\r
1001 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
1002 set_FCLK(currentConfig.CPUclock);\r
1003 gp2x_old_clock = currentConfig.CPUclock;\r
1004 printf(" done\n");\r
1005 }\r
1006\r
1007 if (gp2x_old_gamma != currentConfig.gamma) {\r
1008 set_gamma(currentConfig.gamma);\r
1009 gp2x_old_gamma = currentConfig.gamma;\r
1010 printf("updated gamma to %i\n", currentConfig.gamma);\r
1011 }\r
1012\r
1013 fpsbuff[0] = 0;\r
1014\r
1015 // make sure we are in correct mode\r
1016 vidResetMode();\r
1017 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
1018 find_combos();\r
1019\r
1020 // pal/ntsc might have changed, reset related stuff\r
1021 target_fps = Pico.m.pal ? 50 : 60;\r
1022 target_frametime = 1000000/target_fps;\r
1023 reset_timing = 1;\r
1024\r
1025 // prepare sound stuff\r
1026 if(currentConfig.EmuOpt & 4) {\r
1027 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
1028 /* if 940 is turned off, we need it to be put back to sleep */\r
1029 if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
8dfb9fd5 1030 Reset940(1, 2);\r
720ee7f6 1031 Pause940(1);\r
1032 }\r
1033 sound_rerate();\r
1034 }\r
1035 //excess_samples = PsndRate - PsndLen*target_fps;\r
1036 snd_excess_cnt = 0;\r
1037 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
1038 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n", PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
1039 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
1040 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
1041 PicoWriteSound = updateSound;\r
1042 PsndOut = calloc((PicoOpt&8) ? (PsndLen*4+4) : (PsndLen*2+2), 1);\r
1043 PsndRate_old = PsndRate;\r
1044 PsndLen_real = PsndLen;\r
1045 PicoOpt_old = PicoOpt;\r
1046 pal_old = Pico.m.pal;\r
1047 } else {\r
1048 PsndOut = 0;\r
1049 }\r
1050\r
1051 // loop?\r
1052 while (engineState == PGS_Running)\r
1053 {\r
1054 int modes;\r
1055\r
1056 gettimeofday(&tval, 0);\r
1057 if(reset_timing) {\r
1058 reset_timing = 0;\r
1059 thissec = tval.tv_sec;\r
1060 frames_shown = frames_done = tval.tv_usec/target_frametime;\r
1061 }\r
1062\r
1063 // show notice message?\r
1064 if(noticeMsgTime.tv_sec) {\r
1065 static int noticeMsgSum;\r
1066 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
1067 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
1068 clearArea(0);\r
1069 notice = 0;\r
1070 } else {\r
1071 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
1072 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
1073 notice = noticeMsg;\r
1074 }\r
1075 }\r
1076\r
1077 // check for mode changes\r
1078 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
1079 if (modes != oldmodes) {\r
1080 int scalex = 320;\r
1081 osd_fps_x = OSD_FPS_X;\r
1082 if (modes & 4) {\r
1083 vidCpyM2 = vidCpyM2_40col;\r
1084 } else {\r
1085 if (PicoOpt & 0x100) {\r
1086 vidCpyM2 = vidCpyM2_32col_nobord;\r
1087 scalex = 256;\r
1088 osd_fps_x = OSD_FPS_X - 64;\r
1089 } else {\r
1090 vidCpyM2 = vidCpyM2_32col;\r
1091 }\r
1092 }\r
1093 gp2x_video_RGB_setscaling(scalex, 240);\r
1094 oldmodes = modes;\r
1095 clearArea(1);\r
1096 }\r
1097\r
1098 // second changed?\r
1099 if(thissec != tval.tv_sec) {\r
1100#ifdef BENCHMARK\r
1101 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1102 if(++bench == 10) {\r
1103 bench = 0;\r
1104 bench_fps_s = bench_fps;\r
1105 bf[bfp++ & 3] = bench_fps;\r
1106 bench_fps = 0;\r
1107 }\r
1108 bench_fps += frames_shown;\r
1109 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1110#else\r
1111 if(currentConfig.EmuOpt & 2)\r
1112 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1113#endif\r
1114 thissec = tval.tv_sec;\r
1115\r
1116 if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
1117 frames_done = frames_shown = 0;\r
1118 } else {\r
1119 // it is quite common for this implementation to leave 1 fame unfinished\r
1120 // when second changes, but we don't want buffer to starve.\r
1121 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
1122 updateKeys();\r
1123 SkipFrame(1); frames_done++;\r
1124 }\r
1125\r
1126 frames_done -= target_fps; if (frames_done < 0) frames_done = 0;\r
1127 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
1128 if (frames_shown > frames_done) frames_shown = frames_done;\r
1129 }\r
1130 }\r
1131\r
1132 lim_time = (frames_done+1) * target_frametime;\r
1133 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
1134 for(i = 0; i < currentConfig.Frameskip; i++) {\r
1135 updateKeys();\r
1136 SkipFrame(1); frames_done++;\r
1137 if (PsndOut) { // do framelimitting if sound is enabled\r
1138 gettimeofday(&tval, 0);\r
1139 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1140 if(tval.tv_usec < lim_time) { // we are too fast\r
1141 simpleWait(thissec, lim_time);\r
1142 }\r
1143 }\r
1144 lim_time += target_frametime;\r
1145 }\r
1146 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
1147 // no time left for this frame - skip\r
1148 updateKeys();\r
1149 SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
1150 continue;\r
1151 }\r
1152\r
1153 updateKeys();\r
1154 PicoFrame();\r
1155\r
47f22a1f 1156#if 0\r
1157if (Pico.m.frame_count == 31563) {\r
1158 FILE *f;\r
1159 f = fopen("ram_p.bin", "wb");\r
1160 if (!f) { printf("!f\n"); exit(1); }\r
1161 fwrite(Pico.ram, 1, 0x10000, f);\r
1162 fclose(f);\r
1163 exit(0);\r
1164}\r
1165#endif\r
1a20dbc8 1166#if 0\r
1167 // debug\r
1168 {\r
47f22a1f 1169 #define BYTE unsigned char\r
1170 #define WORD unsigned short\r
1171 struct\r
1172 {\r
1173 BYTE IDLength; /* 00h Size of Image ID field */\r
1174 BYTE ColorMapType; /* 01h Color map type */\r
1175 BYTE ImageType; /* 02h Image type code */\r
1176 WORD CMapStart; /* 03h Color map origin */\r
1177 WORD CMapLength; /* 05h Color map length */\r
1178 BYTE CMapDepth; /* 07h Depth of color map entries */\r
1179 WORD XOffset; /* 08h X origin of image */\r
1180 WORD YOffset; /* 0Ah Y origin of image */\r
1181 WORD Width; /* 0Ch Width of image */\r
1182 WORD Height; /* 0Eh Height of image */\r
1183 BYTE PixelDepth; /* 10h Image pixel size */\r
1184 BYTE ImageDescriptor; /* 11h Image descriptor byte */\r
1185 } __attribute__((packed)) TGAHEAD;\r
1186 static unsigned short oldscr[320*240];\r
1a20dbc8 1187 FILE *f; char name[128]; int i;\r
47f22a1f 1188\r
1189 memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1190 TGAHEAD.ImageType = 2;\r
1191 TGAHEAD.Width = 320;\r
1192 TGAHEAD.Height = 240;\r
1193 TGAHEAD.PixelDepth = 16;\r
1194 TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1195\r
1196 #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1197\r
1198 for (i = 0; i < 320*240; i++)\r
1199 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1200 if (i < 320*240)\r
1a20dbc8 1201 {\r
47f22a1f 1202 for (i = 0; i < 320*240; i++)\r
1203 oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1204 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1a20dbc8 1205 f = fopen(name, "wb");\r
1206 if (!f) { printf("!f\n"); exit(1); }\r
47f22a1f 1207 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1208 fwrite(oldscr, 1, 320*240*2, f);\r
1a20dbc8 1209 fclose(f);\r
1210 }\r
1211 }\r
1212#endif\r
1213\r
720ee7f6 1214 // check time\r
1215 gettimeofday(&tval, 0);\r
1216 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1217\r
1218 // sleep if we are still too fast\r
1219 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
1220 {\r
1221 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1222 gettimeofday(&tval, 0);\r
1223 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1224 if(tval.tv_usec < lim_time)\r
1225 {\r
1226 // we are too fast\r
1227 simpleWait(thissec, lim_time);\r
1228 }\r
1229 }\r
1230\r
1231 blit(fpsbuff, notice);\r
1232\r
1233 frames_done++; frames_shown++;\r
1234 }\r
1235\r
1236 // save SRAM\r
1237 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
979ba09f 1238 blit("", "Writing SRAM/BRAM..");\r
720ee7f6 1239 emu_SaveLoadGame(0, 1);\r
1240 SRam.changed = 0;\r
1241 }\r
1242\r
1243 if (PsndOut != 0) {\r
1244 free(PsndOut);\r
1245 PsndOut = 0;\r
1246 }\r
1247}\r
1248\r
1249\r
1250void emu_ResetGame(void)\r
1251{\r
1252 PicoReset(0);\r
1253 reset_timing = 1;\r
1254}\r
1255\r
1256\r
1257size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1258{\r
1259 return gzread(file, p, _n);\r
1260}\r
1261\r
1262\r
1263size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1264{\r
1265 return gzwrite(file, p, _n);\r
1266}\r
1267\r
720ee7f6 1268\r
1269int emu_SaveLoadGame(int load, int sram)\r
1270{\r
1271 int ret = 0;\r
1272 char saveFname[512];\r
1273\r
1274 // make save filename\r
1275 romfname_ext(saveFname, "");\r
15f38574 1276 if(sram) strcat(saveFname, (PicoMCD&1) ? ".brm" : ".srm");\r
720ee7f6 1277 else {\r
1278 if(state_slot > 0 && state_slot < 10) sprintf(saveFname, "%s.%i", saveFname, state_slot);\r
1279 strcat(saveFname, ".mds");\r
1280 }\r
1281\r
1282 printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1283\r
1284 if(sram) {\r
1285 FILE *sramFile;\r
15f38574 1286 int sram_size;\r
1287 unsigned char *sram_data;\r
1288 if (PicoMCD&1) {\r
1289 sram_size = 0x2000;\r
1290 sram_data = Pico_mcd->bram;\r
1291 } else {\r
1292 sram_size = SRam.end-SRam.start+1;\r
1293 if(SRam.reg_back & 4) sram_size=0x2000;\r
1294 sram_data = SRam.data;\r
1295 }\r
1296 if(!sram_data) return 0; // SRam forcefully disabled for this game\r
1297\r
720ee7f6 1298 if(load) {\r
1299 sramFile = fopen(saveFname, "rb");\r
1300 if(!sramFile) return -1;\r
15f38574 1301 fread(sram_data, 1, sram_size, sramFile);\r
720ee7f6 1302 fclose(sramFile);\r
1303 } else {\r
1304 // sram save needs some special processing\r
1305 // see if we have anything to save\r
1306 for(; sram_size > 0; sram_size--)\r
15f38574 1307 if(sram_data[sram_size-1]) break;\r
720ee7f6 1308\r
1309 if(sram_size) {\r
1310 sramFile = fopen(saveFname, "wb");\r
15f38574 1311 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
720ee7f6 1312 ret = (ret != sram_size) ? -1 : 0;\r
1313 fclose(sramFile);\r
1314 sync();\r
1315 }\r
1316 }\r
1317 return ret;\r
15f38574 1318 }\r
1319 else\r
1320 {\r
720ee7f6 1321 void *PmovFile = NULL;\r
1322 // try gzip first\r
1323 if(currentConfig.EmuOpt & 8) {\r
1324 strcat(saveFname, ".gz");\r
1325 if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1326 areaRead = gzRead2;\r
1327 areaWrite = gzWrite2;\r
979ba09f 1328 areaEof = (areaeof *) gzeof;\r
98c9d8d9 1329 areaSeek = (areaseek *) gzseek;\r
720ee7f6 1330 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1331 } else\r
1332 saveFname[strlen(saveFname)-3] = 0;\r
1333 }\r
1334 if(!PmovFile) { // gzip failed or was disabled\r
1335 if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
979ba09f 1336 areaRead = (arearw *) fread;\r
1337 areaWrite = (arearw *) fwrite;\r
1338 areaEof = (areaeof *) feof;\r
98c9d8d9 1339 areaSeek = (areaseek *) fseek;\r
720ee7f6 1340 }\r
1341 }\r
1342 if(PmovFile) {\r
98c9d8d9 1343 ret = PmovState(load ? 6 : 5, PmovFile);\r
720ee7f6 1344 if(areaRead == gzRead2)\r
1345 gzclose(PmovFile);\r
1346 else fclose ((FILE *) PmovFile);\r
1347 PmovFile = 0;\r
1348 if (!load) sync();\r
1349 else Pico.m.dirtyPal=1;\r
98c9d8d9 1350 }\r
1351 else ret = -1;\r
1352 if (!ret)\r
1353 strcpy(noticeMsg, load ? "GAME LOADED " : "GAME SAVED ");\r
1354 else\r
1355 {\r
720ee7f6 1356 strcpy(noticeMsg, load ? "LOAD FAILED " : "SAVE FAILED ");\r
1357 ret = -1;\r
1358 }\r
1359\r
1360 gettimeofday(&noticeMsgTime, 0);\r
1361 return ret;\r
1362 }\r
1363}\r
PicoDrive's frontend in a lib