gp2x/emu.c

   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 <sys/stat.h>\r
  10 #include <sys/types.h>\r
  11 #include <linux/limits.h>\r
  12 #include <ctype.h>\r
  13 #include <unistd.h>\r
  14 \r
  15 #include <stdarg.h>\r
  16 \r
  17 #include "emu.h"\r
  18 #include "gp2x.h"\r
  19 #include "usbjoy.h"\r
  20 #include "menu.h"\r
  21 #include "asmutils.h"\r
  22 #include "cpuctrl.h"\r
  23 \r
  24 #include <Pico/PicoInt.h>\r
  25 #include <Pico/Patch.h>\r
  26 #include <zlib/zlib.h>\r
  27 \r
  28 \r
  29 #ifdef BENCHMARK\r
  30 #define OSD_FPS_X 220\r
  31 #else\r
  32 #define OSD_FPS_X 260\r
  33 #endif\r
  34 \r
  35 // PicoPad[] format: SACB RLDU\r
  36 char *actionNames[] = {\r
  37         "UP", "DOWN", "LEFT", "RIGHT", "B", "C", "A", "START",\r
  38         0, 0, 0, 0, 0, 0, 0, 0, // Z, Y, X, MODE (enabled only when needed), ?, ?, ?, ?\r
  39         0, 0, 0, 0, 0, 0, 0, "ENTER MENU", // player2_flag, ?, ?, ?, ?, ?, ?, menu\r
  40         "NEXT SAVE SLOT", "PREV SAVE SLOT", "SWITCH RENDERER", "SAVE STATE",\r
  41         "LOAD STATE", "VOLUME UP", "VOLUME DOWN", "DONE"\r
  42 };\r
  43 \r
  44 int engineState;\r
  45 int select_exits = 0;\r
  46 char *PicoConfigFile = "picoconfig.bin";\r
  47 currentConfig_t currentConfig;\r
  48 \r
  49 char romFileName[PATH_MAX];\r
  50 unsigned char *rom_data = NULL;\r
  51 \r
  52 extern int crashed_940;\r
  53 \r
  54 static short sndBuffer[2*44100/50];\r
  55 static char noticeMsg[64];                                      // notice msg to draw\r
  56 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  57 static int reset_timing, osd_fps_x;\r
  58 static int combo_keys = 0, combo_acts = 0;      // keys and actions which need button combos\r
  59 static int gp2x_old_gamma = 100;\r
  60 static unsigned char *movie_data = NULL;\r
  61 static int movie_size = 0;\r
  62 unsigned char *framebuff = 0;  // temporary buffer for alt renderer\r
  63 int state_slot = 0;\r
  64 \r
  65 /*\r
  66 // tmp\r
  67 static FILE *logf = NULL;\r
  68 \r
  69 void pprintf(char *texto, ...)\r
  70 {\r
  71         va_list args;\r
  72 \r
  73         va_start(args,texto);\r
  74         vfprintf(logf,texto,args);\r
  75         va_end(args);\r
  76         fflush(logf);\r
  77         sync();\r
  78 }\r
  79 */\r
  80 // utilities\r
  81 static void strlwr(char* string)\r
  82 {\r
  83         while ( (*string++ = (char)tolower(*string)) );\r
  84 }\r
  85 \r
  86 static int try_rfn_cut(void)\r
  87 {\r
  88         FILE *tmp;\r
  89         char *p;\r
  90 \r
  91         p = romFileName + strlen(romFileName) - 1;\r
  92         for (; p > romFileName; p--)\r
  93                 if (*p == '.') break;\r
  94         *p = 0;\r
  95 \r
  96         if((tmp = fopen(romFileName, "rb"))) {\r
  97                 fclose(tmp);\r
  98                 return 1;\r
  99         }\r
 100         return 0;\r
 101 }\r
 102 \r
 103 static void get_ext(char *file, char *ext)\r
 104 {\r
 105         char *p;\r
 106 \r
 107         p = file + strlen(file) - 4;\r
 108         if (p < file) p = file;\r
 109         strncpy(ext, p, 4);\r
 110         ext[4] = 0;\r
 111         strlwr(ext);\r
 112 }\r
 113 \r
 114 char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };\r
 115 char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303",   "eu_mcd1_9210" };\r
 116 char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
 117 \r
 118 extern char **g_argv;\r
 119 \r
 120 int find_bios(int region, char **bios_file)\r
 121 {\r
 122         static char bios_path[1024];\r
 123         int i, j, count;\r
 124         char **files;\r
 125         FILE *f = NULL;\r
 126 \r
 127         if (region == 4) { // US\r
 128                 files = biosfiles_us;\r
 129                 count = sizeof(biosfiles_us) / sizeof(char *);\r
 130         } else if (region == 8) { // EU\r
 131                 files = biosfiles_eu;\r
 132                 count = sizeof(biosfiles_eu) / sizeof(char *);\r
 133         } else if (region == 1 || region == 2) {\r
 134                 files = biosfiles_jp;\r
 135                 count = sizeof(biosfiles_jp) / sizeof(char *);\r
 136         } else {\r
 137                 return 0;\r
 138         }\r
 139 \r
 140         for (i = 0; i < count; i++)\r
 141         {\r
 142                 strncpy(bios_path, g_argv[0], 1023);\r
 143                 bios_path[1024-32] = 0;\r
 144                 for (j = strlen(bios_path); j > 0; j--)\r
 145                         if (bios_path[j] == '/') { bios_path[j+1] = 0; break; }\r
 146                 strcat(bios_path, files[i]);\r
 147                 strcat(bios_path, ".bin");\r
 148                 f = fopen(bios_path, "rb");\r
 149                 if (f) break;\r
 150 \r
 151                 bios_path[strlen(bios_path) - 4] = 0;\r
 152                 strcat(bios_path, ".zip");\r
 153                 f = fopen(bios_path, "rb");\r
 154                 if (f) break;\r
 155         }\r
 156 \r
 157         if (f) {\r
 158                 printf("using bios: %s\n", bios_path);\r
 159                 fclose(f);\r
 160                 if (bios_file) *bios_file = bios_path;\r
 161                 return 1;\r
 162         } else {\r
 163                 sprintf(menuErrorMsg, "no %s BIOS files found, read docs",\r
 164                         region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 165                 printf("%s\n", menuErrorMsg);\r
 166                 return 0;\r
 167         }\r
 168 }\r
 169 \r
 170 /* checks if romFileName points to valid MegaCD image\r
 171  * if so, checks for suitable BIOS */\r
 172 static int cd_check(char **bios_file)\r
 173 {\r
 174         unsigned char buf[32];\r
 175         pm_file *cd_f;\r
 176         int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe\r
 177 \r
 178         cd_f = pm_open(romFileName);\r
 179         if (!cd_f) return 0; // let the upper level handle this\r
 180 \r
 181         if (pm_read(buf, 32, cd_f) != 32) {\r
 182                 pm_close(cd_f);\r
 183                 return 0;\r
 184         }\r
 185 \r
 186         if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1;       // Sega CD (ISO)\r
 187         if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2;       // Sega CD (BIN)\r
 188         if (type == 0) {\r
 189                 pm_close(cd_f);\r
 190                 return 0;\r
 191         }\r
 192 \r
 193         /* it seems we have a CD image here. Try to detect region and load a suitable BIOS now.. */\r
 194         pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
 195         pm_read(buf, 1, cd_f);\r
 196         pm_close(cd_f);\r
 197 \r
 198         if (buf[0] == 0x64) region = 8; // EU\r
 199         if (buf[0] == 0xa1) region = 1; // JAP\r
 200 \r
 201         printf("detected %s Sega/Mega CD image with %s region\n",\r
 202                 type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 203 \r
 204         if (PicoRegionOverride) {\r
 205                 region = PicoRegionOverride;\r
 206                 printf("overrided region to %s\n", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 207         }\r
 208 \r
 209         if(find_bios(region, bios_file))\r
 210                  return type;   // CD and BIOS detected\r
 211 \r
 212         return -1;              // CD detected but load failed\r
 213 }\r
 214 \r
 215 int emu_ReloadRom(void)\r
 216 {\r
 217         unsigned int rom_size = 0;\r
 218         char *used_rom_name = romFileName;\r
 219         char ext[5];\r
 220         pm_file *rom;\r
 221         int ret, cd_state;\r
 222 \r
 223         printf("emu_ReloadRom(%s)\n", romFileName);\r
 224 \r
 225         get_ext(romFileName, ext);\r
 226 \r
 227         // detect wrong extensions\r
 228         if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
 229                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 230                 return 0;\r
 231         }\r
 232 \r
 233         PicoPatchUnload();\r
 234 \r
 235         // check for movie file\r
 236         if(movie_data) {\r
 237                 free(movie_data);\r
 238                 movie_data = 0;\r
 239         }\r
 240         if(!strcmp(ext, ".gmv")) {\r
 241                 // check for both gmv and rom\r
 242                 int dummy;\r
 243                 FILE *movie_file = fopen(romFileName, "rb");\r
 244                 if(!movie_file) {\r
 245                         sprintf(menuErrorMsg, "Failed to open movie.");\r
 246                         return 0;\r
 247                 }\r
 248                 fseek(movie_file, 0, SEEK_END);\r
 249                 movie_size = ftell(movie_file);\r
 250                 fseek(movie_file, 0, SEEK_SET);\r
 251                 if(movie_size < 64+3) {\r
 252                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 253                         fclose(movie_file);\r
 254                         return 0;\r
 255                 }\r
 256                 movie_data = malloc(movie_size);\r
 257                 if(movie_data == NULL) {\r
 258                         sprintf(menuErrorMsg, "low memory.");\r
 259                         fclose(movie_file);\r
 260                         return 0;\r
 261                 }\r
 262                 fread(movie_data, 1, movie_size, movie_file);\r
 263                 fclose(movie_file);\r
 264                 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
 265                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 266                         return 0;\r
 267                 }\r
 268                 dummy = try_rfn_cut() || try_rfn_cut();\r
 269                 if (!dummy) {\r
 270                         sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
 271                         return 0;\r
 272                 }\r
 273                 get_ext(romFileName, ext);\r
 274         }\r
 275         else if (!strcmp(ext, ".pat")) {\r
 276                 int dummy;\r
 277                 PicoPatchLoad(romFileName);\r
 278                 dummy = try_rfn_cut() || try_rfn_cut();\r
 279                 if (!dummy) {\r
 280                         sprintf(menuErrorMsg, "Could't find a ROM to patch.");\r
 281                         return 0;\r
 282                 }\r
 283                 get_ext(romFileName, ext);\r
 284         }\r
 285 \r
 286         // check for MegaCD image\r
 287         cd_state = cd_check(&used_rom_name);\r
 288         if (cd_state > 0) {\r
 289                 PicoMCD |= 1;\r
 290                 get_ext(used_rom_name, ext);\r
 291         } else if (cd_state == -1) {\r
 292                 // bios_help() ?\r
 293                 return 0;\r
 294         } else {\r
 295                 if (PicoMCD & 1) PicoExitMCD();\r
 296                 PicoMCD &= ~1;\r
 297         }\r
 298 \r
 299         rom = pm_open(used_rom_name);\r
 300         if(!rom) {\r
 301                 sprintf(menuErrorMsg, "Failed to open rom.");\r
 302                 return 0;\r
 303         }\r
 304 \r
 305         if(rom_data) {\r
 306                 free(rom_data);\r
 307                 rom_data = 0;\r
 308                 rom_size = 0;\r
 309         }\r
 310 \r
 311         if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
 312                 sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
 313                 printf("%s\n", menuErrorMsg);\r
 314                 pm_close(rom);\r
 315                 return 0;\r
 316         }\r
 317         pm_close(rom);\r
 318 \r
 319         // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
 320         if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
 321           ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
 322                 if (rom_data) free(rom_data);\r
 323                 rom_data = 0;\r
 324                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 325                 return 0;\r
 326         }\r
 327 \r
 328         // load config for this ROM (do this before insert to get correct region)\r
 329         ret = emu_ReadConfig(1);\r
 330         if (!ret)\r
 331                 emu_ReadConfig(0);\r
 332 \r
 333         printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
 334         if(PicoCartInsert(rom_data, rom_size)) {\r
 335                 sprintf(menuErrorMsg, "Failed to load ROM.");\r
 336                 return 0;\r
 337         }\r
 338 \r
 339         Pico.m.frame_count = 0;\r
 340 \r
 341         // insert CD if it was detected\r
 342         if (cd_state > 0) {\r
 343                 ret = Insert_CD(romFileName, cd_state == 2);\r
 344                 if (ret != 0) {\r
 345                         sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");\r
 346                         printf("%s\n", menuErrorMsg);\r
 347                         return 0;\r
 348                 }\r
 349         }\r
 350 \r
 351         // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
 352         strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
 353         currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
 354 \r
 355         if (PicoPatches) {\r
 356                 PicoPatchPrepare();\r
 357                 PicoPatchApply();\r
 358         }\r
 359 \r
 360         // additional movie stuff\r
 361         if(movie_data) {\r
 362                 if(movie_data[0x14] == '6')\r
 363                      PicoOpt |=  0x20; // 6 button pad\r
 364                 else PicoOpt &= ~0x20;\r
 365                 PicoOpt |= 0x40; // accurate timing\r
 366                 if(movie_data[0xF] >= 'A') {\r
 367                         if(movie_data[0x16] & 0x80) {\r
 368                                 PicoRegionOverride = 8;\r
 369                         } else {\r
 370                                 PicoRegionOverride = 4;\r
 371                         }\r
 372                         PicoReset(0);\r
 373                         // TODO: bits 6 & 5\r
 374                 }\r
 375                 movie_data[0x18+30] = 0;\r
 376                 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
 377         }\r
 378         else\r
 379         {\r
 380                 if(Pico.m.pal) {\r
 381                         strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
 382                 } else {\r
 383                         strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
 384                 }\r
 385         }\r
 386         gettimeofday(&noticeMsgTime, 0);\r
 387 \r
 388         // load SRAM for this ROM\r
 389         if(currentConfig.EmuOpt & 1)\r
 390                 emu_SaveLoadGame(1, 1);\r
 391 \r
 392         return 1;\r
 393 }\r
 394 \r
 395 \r
 396 void emu_Init(void)\r
 397 {\r
 398         // make temp buffer for alt renderer\r
 399         framebuff = malloc((8+320)*(8+240+8));\r
 400         if (!framebuff)\r
 401         {\r
 402                 printf("framebuff == 0\n");\r
 403         }\r
 404 \r
 405         // make dirs for saves, cfgs, etc.\r
 406         mkdir("mds", 0777);\r
 407         mkdir("srm", 0777);\r
 408         mkdir("brm", 0777);\r
 409         mkdir("cfg", 0777);\r
 410 \r
 411         PicoInit();\r
 412 \r
 413 //      logf = fopen("log.txt", "w");\r
 414 }\r
 415 \r
 416 \r
 417 static void romfname_ext(char *dst, const char *prefix, const char *ext)\r
 418 {\r
 419         char *p;\r
 420         int prefix_len = 0;\r
 421 \r
 422         // make save filename\r
 423         for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
 424         *dst = 0;\r
 425         if (prefix) {\r
 426                 strcpy(dst, prefix);\r
 427                 prefix_len = strlen(prefix);\r
 428         }\r
 429         strncpy(dst + prefix_len, p, 511-prefix_len);\r
 430         dst[511-8] = 0;\r
 431         if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
 432         if (ext) strcat(dst, ext);\r
 433 }\r
 434 \r
 435 \r
 436 static void find_combos(void)\r
 437 {\r
 438         int act, u;\r
 439 \r
 440         // find out which keys and actions are combos\r
 441         combo_keys = combo_acts = 0;\r
 442         for (act = 0; act < 32; act++)\r
 443         {\r
 444                 int keyc = 0;\r
 445                 if (act == 16) continue; // player2 flag\r
 446                 for (u = 0; u < 32; u++)\r
 447                 {\r
 448                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 449                 }\r
 450                 if (keyc > 1)\r
 451                 {\r
 452                         // loop again and mark those keys and actions as combo\r
 453                         for (u = 0; u < 32; u++)\r
 454                         {\r
 455                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 456                                         combo_keys |= 1 << u;\r
 457                                         combo_acts |= 1 << act;\r
 458                                 }\r
 459                         }\r
 460                 }\r
 461         }\r
 462         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 463 }\r
 464 \r
 465 \r
 466 int emu_ReadConfig(int game)\r
 467 {\r
 468         FILE *f;\r
 469         char cfg[512];\r
 470         int bread = 0;\r
 471 \r
 472         if (!game)\r
 473         {\r
 474                 // set default config\r
 475                 memset(&currentConfig, 0, sizeof(currentConfig));\r
 476                 currentConfig.lastRomFile[0] = 0;\r
 477                 currentConfig.EmuOpt  = 0x1f | 0x400; // | cd_leds\r
 478                 currentConfig.PicoOpt = 0x0f | 0xe00; // | use_940 | cd_pcm | cd_cdda\r
 479                 currentConfig.PsndRate = 22050; // 44100;\r
 480                 currentConfig.PicoRegion = 0; // auto\r
 481                 currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 482                 currentConfig.Frameskip = -1; // auto\r
 483                 currentConfig.CPUclock = 200;\r
 484                 currentConfig.volume = 50;\r
 485                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 486                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 487                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 488                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 489                 currentConfig.KeyBinds[14] = 1<<4;\r
 490                 currentConfig.KeyBinds[13] = 1<<5;\r
 491                 currentConfig.KeyBinds[12] = 1<<6;\r
 492                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 493                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 494                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 495                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 496                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 497                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 498                 currentConfig.gamma = 100;\r
 499                 currentConfig.PicoCDBuffers = 64;\r
 500                 strncpy(cfg, PicoConfigFile, 511);\r
 501                 cfg[511] = 0;\r
 502         } else {\r
 503                 romfname_ext(cfg, "cfg/", ".pbcfg");\r
 504                 f = fopen(cfg, "rb");\r
 505                 if (!f) romfname_ext(cfg, NULL, ".pbcfg");\r
 506                 else fclose(f);\r
 507         }\r
 508 \r
 509         printf("emu_ReadConfig: %s ", cfg);\r
 510         f = fopen(cfg, "rb");\r
 511         if (f) {\r
 512                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 513                 fclose(f);\r
 514         }\r
 515         printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 516 \r
 517         PicoOpt = currentConfig.PicoOpt;\r
 518         PsndRate = currentConfig.PsndRate;\r
 519         PicoRegionOverride = currentConfig.PicoRegion;\r
 520         PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;\r
 521         PicoCDBuffers = currentConfig.PicoCDBuffers;\r
 522         if (PicoOpt & 0x20) {\r
 523                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 524                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 525         }\r
 526         // some sanity checks\r
 527         if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 528         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 529         // if volume keys are unbound, bind them to volume control\r
 530         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 531                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 532                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 533         }\r
 534 \r
 535         return (bread == sizeof(currentConfig));\r
 536 }\r
 537 \r
 538 \r
 539 int emu_WriteConfig(int game)\r
 540 {\r
 541         FILE *f;\r
 542         char cfg[512];\r
 543         int bwrite = 0;\r
 544 \r
 545         if (!game)\r
 546         {\r
 547                 strncpy(cfg, PicoConfigFile, 511);\r
 548                 cfg[511] = 0;\r
 549         } else {\r
 550                 romfname_ext(cfg, "cfg/", ".pbcfg");\r
 551         }\r
 552 \r
 553         printf("emu_WriteConfig: %s ", cfg);\r
 554         f = fopen(cfg, "wb");\r
 555         if (f) {\r
 556                 currentConfig.PicoOpt = PicoOpt;\r
 557                 currentConfig.PsndRate = PsndRate;\r
 558                 currentConfig.PicoRegion = PicoRegionOverride;\r
 559                 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;\r
 560                 currentConfig.PicoCDBuffers = PicoCDBuffers;\r
 561                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 562                 fflush(f);\r
 563                 fclose(f);\r
 564                 sync();\r
 565         }\r
 566         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 567 \r
 568         return (bwrite == sizeof(currentConfig));\r
 569 }\r
 570 \r
 571 \r
 572 void emu_Deinit(void)\r
 573 {\r
 574         // save SRAM\r
 575         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 576                 emu_SaveLoadGame(0, 1);\r
 577                 SRam.changed = 0;\r
 578         }\r
 579 \r
 580         if (!(currentConfig.EmuOpt & 0x20))\r
 581                 emu_WriteConfig(0);\r
 582         free(framebuff);\r
 583 \r
 584         PicoExit();\r
 585 //      fclose(logf);\r
 586 \r
 587         // restore gamma\r
 588         if (gp2x_old_gamma != 100)\r
 589                 set_gamma(100);\r
 590 }\r
 591 \r
 592 \r
 593 void osd_text(int x, int y, const char *text)\r
 594 {\r
 595         int len = strlen(text)*8;\r
 596 \r
 597         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 598                 int *p, i, h;\r
 599                 x &= ~3; // align x\r
 600                 len = (len+3) >> 2;\r
 601                 for (h = 0; h < 8; h++) {\r
 602                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 603                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 604                 }\r
 605                 gp2x_text_out8_2(x, y, text, 0xf0);\r
 606         } else {\r
 607                 int *p, i, h;\r
 608                 x &= ~1; // align x\r
 609                 len = (len+1) >> 1;\r
 610                 for (h = 0; h < 8; h++) {\r
 611                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 612                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 613                 }\r
 614                 gp2x_text_out15(x, y, text);\r
 615         }\r
 616 }\r
 617 \r
 618 static void cd_leds(void)\r
 619 {\r
 620         // mmu problems?\r
 621 //      static\r
 622         int old_reg;\r
 623 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
 624         old_reg = Pico_mcd->s68k_regs[0];\r
 625 \r
 626         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 627                 // 8-bit modes\r
 628                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 629                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 630                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 631                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 632                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 633                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 634                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 635                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 636         } else {\r
 637                 // 16-bit modes\r
 638                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 639                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 640                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 641                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 642                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 643                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 644         }\r
 645 }\r
 646 \r
 647 static int EmuScan16(unsigned int num, void *sdata)\r
 648 {\r
 649         if (!(Pico.video.reg[1]&8)) num += 8;\r
 650         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 651 \r
 652         return 0;\r
 653 }\r
 654 \r
 655 static int EmuScan8(unsigned int num, void *sdata)\r
 656 {\r
 657         if (!(Pico.video.reg[1]&8)) num += 8;\r
 658         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 659 \r
 660         return 0;\r
 661 }\r
 662 \r
 663 int localPal[0x100];\r
 664 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 665 \r
 666 static void blit(const char *fps, const char *notice)\r
 667 {\r
 668         int emu_opt = currentConfig.EmuOpt;\r
 669 \r
 670         if (PicoOpt&0x10) {\r
 671                 // 8bit fast renderer\r
 672                 if (Pico.m.dirtyPal) {\r
 673                         Pico.m.dirtyPal = 0;\r
 674                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 675                         // feed new palette to our device\r
 676                         gp2x_video_setpalette(localPal, 0x40);\r
 677                 }\r
 678                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 679         } else if (!(emu_opt&0x80)) {\r
 680                 // 8bit accurate renderer\r
 681                 if (Pico.m.dirtyPal) {\r
 682                         Pico.m.dirtyPal = 0;\r
 683                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 684                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 685                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 686                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 687                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 688                                 localPal[0xc0] = 0x0000c000;\r
 689                                 localPal[0xd0] = 0x00c00000;\r
 690                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 691                                 localPal[0xf0] = 0x00ffffff;\r
 692                                 gp2x_video_setpalette(localPal, 0x100);\r
 693                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 694                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 695                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 696                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 697                                 gp2x_video_setpalette(localPal, 0xc0);\r
 698                         } else {\r
 699                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 700                                 gp2x_video_setpalette(localPal, 0x40);\r
 701                         }\r
 702                 }\r
 703         }\r
 704 \r
 705         if (notice) osd_text(4, 232, notice);\r
 706         if (emu_opt & 2)\r
 707                 osd_text(osd_fps_x, 232, fps);\r
 708         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 709                 cd_leds();\r
 710 \r
 711         //gp2x_video_wait_vsync();\r
 712         gp2x_video_flip();\r
 713 \r
 714         if (!(PicoOpt&0x10)) {\r
 715                 if (!(Pico.video.reg[1]&8)) {\r
 716                         if (currentConfig.EmuOpt&0x80) {\r
 717                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 718                         } else {\r
 719                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 720                         }\r
 721                 } else {\r
 722                         DrawLineDest = gp2x_screen;\r
 723                 }\r
 724         }\r
 725 }\r
 726 \r
 727 \r
 728 // clears whole screen or just the notice area (in all buffers)\r
 729 static void clearArea(int full)\r
 730 {\r
 731         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 732                 // 8-bit renderers\r
 733                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 734                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 735         } else {\r
 736                 // 16bit accurate renderer\r
 737                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 738                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 739         }\r
 740 }\r
 741 \r
 742 \r
 743 static void vidResetMode(void)\r
 744 {\r
 745         if (PicoOpt&0x10) {\r
 746                 gp2x_video_changemode(8);\r
 747         } else if (currentConfig.EmuOpt&0x80) {\r
 748                 gp2x_video_changemode(15);\r
 749                 PicoDrawSetColorFormat(1);\r
 750                 PicoScan = EmuScan16;\r
 751                 PicoScan(0, 0);\r
 752         } else {\r
 753                 gp2x_video_changemode(8);\r
 754                 PicoDrawSetColorFormat(2);\r
 755                 PicoScan = EmuScan8;\r
 756                 PicoScan(0, 0);\r
 757         }\r
 758         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 759                 // setup pal for 8-bit modes\r
 760                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 761                 localPal[0xd0] = 0x00c00000;\r
 762                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 763                 localPal[0xf0] = 0x00ffffff;\r
 764                 gp2x_video_setpalette(localPal, 0x100);\r
 765                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 766                 gp2x_video_flip();\r
 767         }\r
 768         Pico.m.dirtyPal = 1;\r
 769         // reset scaling\r
 770         gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 771 }\r
 772 \r
 773 \r
 774 static void emu_state_cb(const char *str)\r
 775 {\r
 776         clearArea(0);\r
 777         blit("", str);\r
 778 }\r
 779 \r
 780 static void RunEvents(unsigned int which)\r
 781 {\r
 782         if(which & 0x1800) { // save or load (but not both)\r
 783                 int do_it = 1;\r
 784                 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && emu_check_save_file(state_slot)) {\r
 785                         unsigned long keys;\r
 786                         blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
 787                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 788                                 usleep(50*1024);\r
 789                         if (keys & GP2X_X) do_it = 0;\r
 790                         clearArea(0);\r
 791                 }\r
 792                 if (do_it) {\r
 793                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 794                         PicoStateProgressCB = emu_state_cb;\r
 795                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 796                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 797                         PicoStateProgressCB = NULL;\r
 798                 }\r
 799 \r
 800                 reset_timing = 1;\r
 801         }\r
 802         if(which & 0x0400) { // switch renderer\r
 803                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 804                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 805                 else   currentConfig.EmuOpt &= ~0x80;\r
 806 \r
 807                 vidResetMode();\r
 808 \r
 809                 if (PicoOpt&0x10) {\r
 810                         strcpy(noticeMsg, " 8bit fast renderer");\r
 811                 } else if (currentConfig.EmuOpt&0x80) {\r
 812                         strcpy(noticeMsg, "16bit accurate renderer");\r
 813                 } else {\r
 814                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 815                 }\r
 816 \r
 817                 gettimeofday(&noticeMsgTime, 0);\r
 818         }\r
 819         if(which & 0x0300) {\r
 820                 if(which&0x0200) {\r
 821                         state_slot -= 1;\r
 822                         if(state_slot < 0) state_slot = 9;\r
 823                 } else {\r
 824                         state_slot += 1;\r
 825                         if(state_slot > 9) state_slot = 0;\r
 826                 }\r
 827                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_check_save_file(state_slot) ? "USED" : "FREE");\r
 828                 gettimeofday(&noticeMsgTime, 0);\r
 829         }\r
 830         if(which & 0x0080) {\r
 831                 engineState = PGS_Menu;\r
 832         }\r
 833 }\r
 834 \r
 835 \r
 836 static void updateMovie(void)\r
 837 {\r
 838         int offs = Pico.m.frame_count*3 + 0x40;\r
 839         if (offs+3 > movie_size) {\r
 840                 free(movie_data);\r
 841                 movie_data = 0;\r
 842                 strcpy(noticeMsg, "END OF MOVIE.");\r
 843                 printf("END OF MOVIE.\n");\r
 844                 gettimeofday(&noticeMsgTime, 0);\r
 845         } else {\r
 846                 // MXYZ SACB RLDU\r
 847                 PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 848                 if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 849                 if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 850                 if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 851                 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 852                 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 853                 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 854                 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 855                 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 856                 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 857                 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 858                 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 859                 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 860                 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 861         }\r
 862 }\r
 863 \r
 864 \r
 865 static void updateKeys(void)\r
 866 {\r
 867         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 868         static unsigned long prevEvents = 0;\r
 869         int joy, i;\r
 870 \r
 871         keys = gp2x_joystick_read(0);\r
 872         if (keys & GP2X_SELECT) {\r
 873                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 874                 // wait until select is released, so menu would not resume game\r
 875                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 876         }\r
 877 \r
 878         keys &= CONFIGURABLE_KEYS;\r
 879 \r
 880         for (i = 0; i < 32; i++)\r
 881         {\r
 882                 if (keys & (1 << i)) {\r
 883                         int pl, acts = currentConfig.KeyBinds[i];\r
 884                         if (!acts) continue;\r
 885                         pl = (acts >> 16) & 1;\r
 886                         if (combo_keys & (1 << i)) {\r
 887                                 int u = i+1, acts_c = acts & combo_acts;\r
 888                                 // let's try to find the other one\r
 889                                 if (acts_c)\r
 890                                         for (; u < 32; u++)\r
 891                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 892                                                         allActions[pl] |= acts_c;\r
 893                                                         keys &= ~((1 << i) | (1 << u));\r
 894                                                         break;\r
 895                                                 }\r
 896                                 // add non-combo actions if combo ones were not found\r
 897                                 if (!acts_c || u == 32)\r
 898                                         allActions[pl] |= acts & ~combo_acts;\r
 899                         } else {\r
 900                                 allActions[pl] |= acts;\r
 901                         }\r
 902                 }\r
 903         }\r
 904 \r
 905         // add joy inputs\r
 906         if (num_of_joys > 0)\r
 907         {\r
 908                 gp2x_usbjoy_update();\r
 909                 for (joy = 0; joy < num_of_joys; joy++) {\r
 910                         int keys = gp2x_usbjoy_check2(joy);\r
 911                         for (i = 0; i < 32; i++) {\r
 912                                 if (keys & (1 << i)) {\r
 913                                         int acts = currentConfig.JoyBinds[joy][i];\r
 914                                         int pl = (acts >> 16) & 1;\r
 915                                         allActions[pl] |= acts;\r
 916                                 }\r
 917                         }\r
 918                 }\r
 919         }\r
 920 \r
 921         PicoPad[0] = (unsigned short) allActions[0];\r
 922         PicoPad[1] = (unsigned short) allActions[1];\r
 923 \r
 924         events = (allActions[0] | allActions[1]) >> 16;\r
 925 \r
 926         // volume is treated in special way and triggered every frame\r
 927         if(events & 0x6000) {\r
 928                 int vol = currentConfig.volume;\r
 929                 if (events & 0x2000) {\r
 930                         if (vol < 90) vol++;\r
 931                 } else {\r
 932                         if (vol >  0) vol--;\r
 933                 }\r
 934                 gp2x_sound_volume(vol, vol);\r
 935                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 936                 gettimeofday(&noticeMsgTime, 0);\r
 937                 currentConfig.volume = vol;\r
 938         }\r
 939 \r
 940         events &= ~prevEvents;\r
 941         if (events) RunEvents(events);\r
 942         if (movie_data) updateMovie();\r
 943 \r
 944         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 945 }\r
 946 \r
 947 \r
 948 static void updateSound(int len)\r
 949 {\r
 950         if (PicoOpt&8) len<<=1;\r
 951 \r
 952         gp2x_sound_write(PsndOut, len<<1);\r
 953 }\r
 954 \r
 955 \r
 956 static void SkipFrame(int do_sound)\r
 957 {\r
 958         void *sndbuff_tmp = 0;\r
 959         if (PsndOut && !do_sound) {\r
 960                 sndbuff_tmp = PsndOut;\r
 961                 PsndOut = 0;\r
 962         }\r
 963 \r
 964         PicoSkipFrame=1;\r
 965         PicoFrame();\r
 966         PicoSkipFrame=0;\r
 967 \r
 968         if (sndbuff_tmp && !do_sound) {\r
 969                 PsndOut = sndbuff_tmp;\r
 970         }\r
 971 }\r
 972 \r
 973 \r
 974 void emu_forced_frame(void)\r
 975 {\r
 976         int po_old = PicoOpt;\r
 977 \r
 978         PicoOpt |= 0x10;\r
 979         PicoFrameFull();\r
 980         PicoOpt = po_old;\r
 981 \r
 982         if (!(Pico.video.reg[12]&1)) {\r
 983                 vidCpyM2 = vidCpyM2_32col;\r
 984                 clearArea(1);\r
 985         } else  vidCpyM2 = vidCpyM2_40col;\r
 986 \r
 987         vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 988         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 989         gp2x_video_setpalette(localPal, 0x40);\r
 990 }\r
 991 \r
 992 static void simpleWait(int thissec, int lim_time)\r
 993 {\r
 994         struct timeval tval;\r
 995 \r
 996         spend_cycles(1024);\r
 997         gettimeofday(&tval, 0);\r
 998         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 999 \r
1000         while(tval.tv_usec < lim_time)\r
1001         {\r
1002                 spend_cycles(1024);\r
1003                 gettimeofday(&tval, 0);\r
1004                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1005         }\r
1006 }\r
1007 \r
1008 \r
1009 void emu_Loop(void)\r
1010 {\r
1011         static int gp2x_old_clock = 200;\r
1012         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
1013         char fpsbuff[24]; // fps count c string\r
1014         struct timeval tval; // timing\r
1015         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
1016         int target_fps, target_frametime, lim_time, i;\r
1017         char *notice = 0;\r
1018 \r
1019         printf("entered emu_Loop()\n");\r
1020 \r
1021         if (gp2x_old_clock != currentConfig.CPUclock) {\r
1022                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
1023                 set_FCLK(currentConfig.CPUclock);\r
1024                 gp2x_old_clock = currentConfig.CPUclock;\r
1025                 printf(" done\n");\r
1026         }\r
1027 \r
1028         if (gp2x_old_gamma != currentConfig.gamma) {\r
1029                 set_gamma(currentConfig.gamma);\r
1030                 gp2x_old_gamma = currentConfig.gamma;\r
1031                 printf("updated gamma to %i\n", currentConfig.gamma);\r
1032         }\r
1033 \r
1034         fpsbuff[0] = 0;\r
1035 \r
1036         // make sure we are in correct mode\r
1037         vidResetMode();\r
1038         Pico.m.dirtyPal = 1;\r
1039         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
1040         find_combos();\r
1041 \r
1042         // pal/ntsc might have changed, reset related stuff\r
1043         target_fps = Pico.m.pal ? 50 : 60;\r
1044         target_frametime = 1000000/target_fps;\r
1045         reset_timing = 1;\r
1046 \r
1047         // prepare sound stuff\r
1048         if(currentConfig.EmuOpt & 4) {\r
1049                 int snd_excess_add;\r
1050                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
1051                         /* if 940 is turned off, we need it to be put back to sleep */\r
1052                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
1053                                 Reset940(1, 2);\r
1054                                 Pause940(1);\r
1055                         }\r
1056                         sound_rerate(1);\r
1057                 }\r
1058                 //excess_samples = PsndRate - PsndLen*target_fps;\r
1059                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
1060                 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
1061                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
1062                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
1063                 PicoWriteSound = updateSound;\r
1064                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
1065                 PsndOut = sndBuffer;\r
1066                 PsndRate_old = PsndRate;\r
1067                 PsndLen_real = PsndLen;\r
1068                 PicoOpt_old  = PicoOpt;\r
1069                 pal_old = Pico.m.pal;\r
1070         } else {\r
1071                 PsndOut = 0;\r
1072         }\r
1073 \r
1074         // prepare CD buffer\r
1075         if (PicoMCD & 1) PicoCDBufferInit();\r
1076 \r
1077         // loop?\r
1078         while (engineState == PGS_Running)\r
1079         {\r
1080                 int modes;\r
1081 \r
1082                 gettimeofday(&tval, 0);\r
1083                 if(reset_timing) {\r
1084                         reset_timing = 0;\r
1085                         thissec = tval.tv_sec;\r
1086                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
1087                 }\r
1088 \r
1089                 // show notice message?\r
1090                 if(noticeMsgTime.tv_sec) {\r
1091                         static int noticeMsgSum;\r
1092                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
1093                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
1094                                 clearArea(0);\r
1095                                 notice = 0;\r
1096                         } else {\r
1097                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
1098                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
1099                                 notice = noticeMsg;\r
1100                         }\r
1101                 }\r
1102 \r
1103                 // check for mode changes\r
1104                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
1105                 if (modes != oldmodes) {\r
1106                         int scalex = 320;\r
1107                         osd_fps_x = OSD_FPS_X;\r
1108                         if (modes & 4) {\r
1109                                 vidCpyM2 = vidCpyM2_40col;\r
1110                         } else {\r
1111                                 if (PicoOpt & 0x100) {\r
1112                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
1113                                         scalex = 256;\r
1114                                         osd_fps_x = OSD_FPS_X - 64;\r
1115                                 } else {\r
1116                                         vidCpyM2 = vidCpyM2_32col;\r
1117                                 }\r
1118                         }\r
1119                         gp2x_video_RGB_setscaling(scalex, 240);\r
1120                         oldmodes = modes;\r
1121                         clearArea(1);\r
1122                 }\r
1123 \r
1124                 // second changed?\r
1125                 if(thissec != tval.tv_sec) {\r
1126 #ifdef BENCHMARK\r
1127                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1128                         if(++bench == 10) {\r
1129                                 bench = 0;\r
1130                                 bench_fps_s = bench_fps;\r
1131                                 bf[bfp++ & 3] = bench_fps;\r
1132                                 bench_fps = 0;\r
1133                         }\r
1134                         bench_fps += frames_shown;\r
1135                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1136 #else\r
1137                         if(currentConfig.EmuOpt & 2)\r
1138                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1139 #endif\r
1140                         thissec = tval.tv_sec;\r
1141 \r
1142                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
1143                                 frames_done = frames_shown = 0;\r
1144                         } else {\r
1145                                 // it is quite common for this implementation to leave 1 fame unfinished\r
1146                                 // when second changes, but we don't want buffer to starve.\r
1147                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
1148                                         updateKeys();\r
1149                                         SkipFrame(1); frames_done++;\r
1150                                 }\r
1151 \r
1152                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
1153                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
1154                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
1155                         }\r
1156                 }\r
1157 \r
1158                 lim_time = (frames_done+1) * target_frametime;\r
1159                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
1160                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
1161                                 updateKeys();\r
1162                                 SkipFrame(1); frames_done++;\r
1163                                 if (PsndOut) { // do framelimitting if sound is enabled\r
1164                                         gettimeofday(&tval, 0);\r
1165                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1166                                         if(tval.tv_usec < lim_time) { // we are too fast\r
1167                                                 simpleWait(thissec, lim_time);\r
1168                                         }\r
1169                                 }\r
1170                                 lim_time += target_frametime;\r
1171                         }\r
1172                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
1173                         // no time left for this frame - skip\r
1174                         updateKeys();\r
1175                         SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
1176                         continue;\r
1177                 }\r
1178 \r
1179                 updateKeys();\r
1180                 PicoFrame();\r
1181 \r
1182 #if 0\r
1183 if (Pico.m.frame_count == 31563) {\r
1184         FILE *f;\r
1185         f = fopen("ram_p.bin", "wb");\r
1186         if (!f) { printf("!f\n"); exit(1); }\r
1187         fwrite(Pico.ram, 1, 0x10000, f);\r
1188         fclose(f);\r
1189         exit(0);\r
1190 }\r
1191 #endif\r
1192 #if 0\r
1193                 // debug\r
1194                 {\r
1195                         #define BYTE unsigned char\r
1196                         #define WORD unsigned short\r
1197                         struct\r
1198                         {\r
1199                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1200                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1201                                 BYTE ImageType;       /* 02h  Image type code */\r
1202                                 WORD CMapStart;       /* 03h  Color map origin */\r
1203                                 WORD CMapLength;      /* 05h  Color map length */\r
1204                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1205                                 WORD XOffset;         /* 08h  X origin of image */\r
1206                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1207                                 WORD Width;           /* 0Ch  Width of image */\r
1208                                 WORD Height;          /* 0Eh  Height of image */\r
1209                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1210                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1211                         } __attribute__((packed)) TGAHEAD;\r
1212                         static unsigned short oldscr[320*240];\r
1213                         FILE *f; char name[128]; int i;\r
1214 \r
1215                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1216                         TGAHEAD.ImageType = 2;\r
1217                         TGAHEAD.Width = 320;\r
1218                         TGAHEAD.Height = 240;\r
1219                         TGAHEAD.PixelDepth = 16;\r
1220                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1221 \r
1222                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1223 \r
1224                         for (i = 0; i < 320*240; i++)\r
1225                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1226                         if (i < 320*240)\r
1227                         {\r
1228                                 for (i = 0; i < 320*240; i++)\r
1229                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1230                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1231                                 f = fopen(name, "wb");\r
1232                                 if (!f) { printf("!f\n"); exit(1); }\r
1233                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1234                                 fwrite(oldscr, 1, 320*240*2, f);\r
1235                                 fclose(f);\r
1236                         }\r
1237                 }\r
1238 #endif\r
1239 \r
1240                 // check time\r
1241                 gettimeofday(&tval, 0);\r
1242                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1243 \r
1244                 // sleep if we are still too fast\r
1245                 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
1246                 {\r
1247                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1248                         gettimeofday(&tval, 0);\r
1249                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1250                         if(tval.tv_usec < lim_time)\r
1251                         {\r
1252                                 // we are too fast\r
1253                                 simpleWait(thissec, lim_time);\r
1254                         }\r
1255                 }\r
1256 \r
1257                 blit(fpsbuff, notice);\r
1258 \r
1259                 frames_done++; frames_shown++;\r
1260         }\r
1261 \r
1262 \r
1263         if (PicoMCD & 1) PicoCDBufferFree();\r
1264 \r
1265         // save SRAM\r
1266         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1267                 osd_text(4, 232, "Writing SRAM/BRAM..");\r
1268                 emu_SaveLoadGame(0, 1);\r
1269                 SRam.changed = 0;\r
1270         }\r
1271 \r
1272         // if in 16bit mode, generate 8it image for menu background\r
1273         if (!(PicoOpt&0x10) && (currentConfig.EmuOpt&0x80))\r
1274                 emu_forced_frame();\r
1275 \r
1276         // for menu bg\r
1277         gp2x_memcpy_buffers((1<<2), gp2x_screen, 0, 320*240*2);\r
1278 }\r
1279 \r
1280 \r
1281 void emu_ResetGame(void)\r
1282 {\r
1283         PicoReset(0);\r
1284         reset_timing = 1;\r
1285 }\r
1286 \r
1287 \r
1288 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1289 {\r
1290         return gzread(file, p, _n);\r
1291 }\r
1292 \r
1293 \r
1294 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1295 {\r
1296         return gzwrite(file, p, _n);\r
1297 }\r
1298 \r
1299 static int try_ropen_file(const char *fname)\r
1300 {\r
1301         FILE *f;\r
1302 \r
1303         f = fopen(fname, "rb");\r
1304         if (f) {\r
1305                 fclose(f);\r
1306                 return 1;\r
1307         }\r
1308         return 0;\r
1309 }\r
1310 \r
1311 char *emu_GetSaveFName(int load, int is_sram, int slot)\r
1312 {\r
1313         static char saveFname[512];\r
1314         char ext[16];\r
1315 \r
1316         if (is_sram)\r
1317         {\r
1318                 romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");\r
1319                 if (load) {\r
1320                         if (try_ropen_file(saveFname)) return saveFname;\r
1321                         // try in current dir..\r
1322                         romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");\r
1323                         if (try_ropen_file(saveFname)) return saveFname;\r
1324                         return NULL; // give up\r
1325                 }\r
1326         }\r
1327         else\r
1328         {\r
1329                 ext[0] = 0;\r
1330                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1331                 strcat(ext, (currentConfig.EmuOpt & 8) ? ".mds.gz" : ".mds");\r
1332 \r
1333                 romfname_ext(saveFname, "mds/", ext);\r
1334                 if (load) {\r
1335                         if (try_ropen_file(saveFname)) return saveFname;\r
1336                         romfname_ext(saveFname, NULL, ext);\r
1337                         if (try_ropen_file(saveFname)) return saveFname;\r
1338                         if (currentConfig.EmuOpt & 8) {\r
1339                                 ext[0] = 0;\r
1340                                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1341                                 strcat(ext, ".mds");\r
1342 \r
1343                                 romfname_ext(saveFname, "mds/", ext);\r
1344                                 if (try_ropen_file(saveFname)) return saveFname;\r
1345                                 romfname_ext(saveFname, NULL, ext);\r
1346                                 if (try_ropen_file(saveFname)) return saveFname;\r
1347                         }\r
1348                         return NULL;\r
1349                 }\r
1350         }\r
1351 \r
1352         return saveFname;\r
1353 }\r
1354 \r
1355 int emu_check_save_file(int slot)\r
1356 {\r
1357         return emu_GetSaveFName(1, 0, slot) ? 1 : 0;\r
1358 }\r
1359 \r
1360 void emu_set_save_cbs(int gz)\r
1361 {\r
1362         if (gz) {\r
1363                 areaRead  = gzRead2;\r
1364                 areaWrite = gzWrite2;\r
1365                 areaEof   = (areaeof *) gzeof;\r
1366                 areaSeek  = (areaseek *) gzseek;\r
1367                 areaClose = (areaclose *) gzclose;\r
1368         } else {\r
1369                 areaRead  = (arearw *) fread;\r
1370                 areaWrite = (arearw *) fwrite;\r
1371                 areaEof   = (areaeof *) feof;\r
1372                 areaSeek  = (areaseek *) fseek;\r
1373                 areaClose = (areaclose *) fclose;\r
1374         }\r
1375 }\r
1376 \r
1377 int emu_SaveLoadGame(int load, int sram)\r
1378 {\r
1379         int ret = 0;\r
1380         char *saveFname;\r
1381 \r
1382         // make save filename\r
1383         saveFname = emu_GetSaveFName(load, sram, state_slot);\r
1384         if (saveFname == NULL) {\r
1385                 if (!sram) {\r
1386                         strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED  ");\r
1387                         gettimeofday(&noticeMsgTime, 0);\r
1388                 }\r
1389                 return -1;\r
1390         }\r
1391 \r
1392         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1393 \r
1394         if(sram) {\r
1395                 FILE *sramFile;\r
1396                 int sram_size;\r
1397                 unsigned char *sram_data;\r
1398                 if (PicoMCD&1) {\r
1399                         sram_size = 0x2000;\r
1400                         sram_data = Pico_mcd->bram;\r
1401                 } else {\r
1402                         sram_size = SRam.end-SRam.start+1;\r
1403                         if(SRam.reg_back & 4) sram_size=0x2000;\r
1404                         sram_data = SRam.data;\r
1405                 }\r
1406                 if(!sram_data) return 0; // SRam forcefully disabled for this game\r
1407 \r
1408                 if(load) {\r
1409                         sramFile = fopen(saveFname, "rb");\r
1410                         if(!sramFile) return -1;\r
1411                         fread(sram_data, 1, sram_size, sramFile);\r
1412                         fclose(sramFile);\r
1413                 } else {\r
1414                         // sram save needs some special processing\r
1415                         // see if we have anything to save\r
1416                         for(; sram_size > 0; sram_size--)\r
1417                                 if(sram_data[sram_size-1]) break;\r
1418 \r
1419                         if(sram_size) {\r
1420                                 sramFile = fopen(saveFname, "wb");\r
1421                                 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
1422                                 ret = (ret != sram_size) ? -1 : 0;\r
1423                                 fclose(sramFile);\r
1424                                 sync();\r
1425                         }\r
1426                 }\r
1427                 return ret;\r
1428         }\r
1429         else\r
1430         {\r
1431                 void *PmovFile = NULL;\r
1432                 if (strcmp(saveFname + strlen(saveFname) - 3, ".gz") == 0) {\r
1433                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1434                                 emu_set_save_cbs(1);\r
1435                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1436                         }\r
1437                 }\r
1438                 else\r
1439                 {\r
1440                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1441                                 emu_set_save_cbs(0);\r
1442                         }\r
1443                 }\r
1444                 if(PmovFile) {\r
1445                         ret = PmovState(load ? 6 : 5, PmovFile);\r
1446                         areaClose(PmovFile);\r
1447                         PmovFile = 0;\r
1448                         if (!load) sync();\r
1449                         else Pico.m.dirtyPal=1;\r
1450                 }\r
1451                 else    ret = -1;\r
1452                 if (!ret)\r
1453                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1454                 else\r
1455                 {\r
1456                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1457                         ret = -1;\r
1458                 }\r
1459 \r
1460                 gettimeofday(&noticeMsgTime, 0);\r
1461                 return ret;\r
1462         }\r
1463 }\r