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 <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
  33 char *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
  41 int engineState;\r
  42 int select_exits = 0;\r
  43 char *PicoConfigFile = "picoconfig.bin";\r
  44 currentConfig_t currentConfig;\r
  45 \r
  46 char romFileName[PATH_MAX];\r
  47 unsigned char *rom_data = NULL;\r
  48 \r
  49 extern int crashed_940;\r
  50 \r
  51 static char noticeMsg[64];                                      // notice msg to draw\r
  52 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  53 static int reset_timing, osd_fps_x;\r
  54 static int combo_keys = 0, combo_acts = 0;      // keys and actions which need button combos\r
  55 static int gp2x_old_gamma = 100;\r
  56 static unsigned char *movie_data = NULL;\r
  57 static int movie_size = 0;\r
  58 unsigned char *framebuff = 0;  // temporary buffer for alt renderer\r
  59 int state_slot = 0;\r
  60 \r
  61 /*\r
  62 // tmp\r
  63 static FILE *logf = NULL;\r
  64 \r
  65 void 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
  77 static void strlwr(char* string)\r
  78 {\r
  79         while ( (*string++ = (char)tolower(*string)) );\r
  80 }\r
  81 \r
  82 static int try_rfn_cut(void)\r
  83 {\r
  84         FILE *tmp;\r
  85         char *p;\r
  86 \r
  87         p = romFileName + strlen(romFileName) - 1;\r
  88         for (; p > romFileName; p--)\r
  89                 if (*p == '.') break;\r
  90         *p = 0;\r
  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
  99 static void get_ext(char *file, char *ext)\r
 100 {\r
 101         char *p;\r
 102 \r
 103         p = file + strlen(file) - 4;\r
 104         if (p < file) p = file;\r
 105         strncpy(ext, p, 4);\r
 106         ext[4] = 0;\r
 107         strlwr(ext);\r
 108 }\r
 109 \r
 110 char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };\r
 111 char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303",   "eu_mcd1_9210" };\r
 112 char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
 113 \r
 114 extern char **g_argv;\r
 115 \r
 116 int 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
 168 static 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
 190         fseek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
 191         fread(buf, 1, 1, cd_f);\r
 192         fclose(cd_f);\r
 193 \r
 194         if (buf[0] == 0x64) region = 8; // EU\r
 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
 211 int emu_ReloadRom(void)\r
 212 {\r
 213         unsigned int rom_size = 0;\r
 214         char *used_rom_name = romFileName;\r
 215         char ext[5];\r
 216         FILE *rom;\r
 217         int ret, cd_state;\r
 218 \r
 219         printf("emu_ReloadRom(%s)\n", romFileName);\r
 220 \r
 221         get_ext(romFileName, ext);\r
 222 \r
 223         // detect wrong extensions\r
 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
 262                 dummy = try_rfn_cut() || try_rfn_cut();\r
 263                 if (!dummy) {\r
 264                         sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
 265                         return 0;\r
 266                 }\r
 267                 get_ext(romFileName, ext);\r
 268         }\r
 269 \r
 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
 279                 PicoMCD &= ~1;\r
 280         }\r
 281 \r
 282         rom = fopen(used_rom_name, "rb");\r
 283         if(!rom) {\r
 284                 sprintf(menuErrorMsg, "Failed to open rom.");\r
 285                 return 0;\r
 286         }\r
 287 \r
 288         if(rom_data) {\r
 289                 free(rom_data);\r
 290                 rom_data = 0;\r
 291                 rom_size = 0;\r
 292         }\r
 293 \r
 294         // zipfile support\r
 295         if(!strcasecmp(ext, ".zip")) {\r
 296                 fclose(rom);\r
 297                 ret = CartLoadZip(used_rom_name, &rom_data, &rom_size);\r
 298                 if(ret) {\r
 299                         if (ret == 4) strcpy(menuErrorMsg, "No ROMs found in zip.");\r
 300                         else sprintf(menuErrorMsg, "Unzip failed with code %i", ret);\r
 301                         printf("%s\n", menuErrorMsg);\r
 302                         return 0;\r
 303                 }\r
 304         } else {\r
 305                 if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
 306                         sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
 307                         printf("%s\n", menuErrorMsg);\r
 308                         fclose(rom);\r
 309                         return 0;\r
 310                 }\r
 311                 fclose(rom);\r
 312         }\r
 313 \r
 314         // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
 315         if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
 316           ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
 317                 if (rom_data) free(rom_data);\r
 318                 rom_data = 0;\r
 319                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 320                 return 0;\r
 321         }\r
 322 \r
 323         // load config for this ROM (do this before insert to get correct region)\r
 324         ret = emu_ReadConfig(1);\r
 325         if (!ret)\r
 326                 emu_ReadConfig(0);\r
 327 \r
 328         printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
 329         if(PicoCartInsert(rom_data, rom_size)) {\r
 330                 sprintf(menuErrorMsg, "Failed to load ROM.");\r
 331                 return 0;\r
 332         }\r
 333 \r
 334         Pico.m.frame_count = 0;\r
 335 \r
 336         // insert CD if it was detected\r
 337         if (cd_state > 0) {\r
 338                 ret = Insert_CD(romFileName, cd_state == 2);\r
 339                 if (ret != 0) {\r
 340                         sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");\r
 341                         printf("%s\n", menuErrorMsg);\r
 342                         return 0;\r
 343                 }\r
 344         }\r
 345 \r
 346         // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
 347         strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
 348         currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
 349 \r
 350         // additional movie stuff\r
 351         if(movie_data) {\r
 352                 if(movie_data[0x14] == '6')\r
 353                      PicoOpt |=  0x20; // 6 button pad\r
 354                 else PicoOpt &= ~0x20;\r
 355                 PicoOpt |= 0x40; // accurate timing\r
 356                 if(movie_data[0xF] >= 'A') {\r
 357                         if(movie_data[0x16] & 0x80) {\r
 358                                 PicoRegionOverride = 8;\r
 359                         } else {\r
 360                                 PicoRegionOverride = 4;\r
 361                         }\r
 362                         PicoReset(0);\r
 363                         // TODO: bits 6 & 5\r
 364                 }\r
 365                 movie_data[0x18+30] = 0;\r
 366                 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
 367         }\r
 368         else\r
 369         {\r
 370                 if(Pico.m.pal) {\r
 371                         strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
 372                 } else {\r
 373                         strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
 374                 }\r
 375         }\r
 376         gettimeofday(&noticeMsgTime, 0);\r
 377 printf("PicoMCD: %x\n", PicoMCD);\r
 378         // load SRAM for this ROM\r
 379         if(currentConfig.EmuOpt & 1)\r
 380                 emu_SaveLoadGame(1, 1);\r
 381 \r
 382         return 1;\r
 383 }\r
 384 \r
 385 \r
 386 void emu_Init(void)\r
 387 {\r
 388         // make temp buffer for alt renderer\r
 389         framebuff = malloc((8+320)*(8+240+8));\r
 390         if (!framebuff)\r
 391         {\r
 392                 printf("framebuff == 0\n");\r
 393         }\r
 394 \r
 395         PicoInit();\r
 396 \r
 397 //      logf = fopen("log.txt", "w");\r
 398 }\r
 399 \r
 400 \r
 401 static void romfname_ext(char *dst, char *ext)\r
 402 {\r
 403         char *p;\r
 404 \r
 405         // make save filename\r
 406         for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
 407         strncpy(dst, p, 511);\r
 408         dst[511-8] = 0;\r
 409         if(dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
 410         strcat(dst, ext);\r
 411 }\r
 412 \r
 413 \r
 414 static void find_combos(void)\r
 415 {\r
 416         int act, u;\r
 417 \r
 418         // find out which keys and actions are combos\r
 419         combo_keys = combo_acts = 0;\r
 420         for (act = 0; act < 32; act++)\r
 421         {\r
 422                 int keyc = 0;\r
 423                 if (act == 16) continue; // player2 flag\r
 424                 for (u = 0; u < 32; u++)\r
 425                 {\r
 426                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 427                 }\r
 428                 if (keyc > 1)\r
 429                 {\r
 430                         // loop again and mark those keys and actions as combo\r
 431                         for (u = 0; u < 32; u++)\r
 432                         {\r
 433                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 434                                         combo_keys |= 1 << u;\r
 435                                         combo_acts |= 1 << act;\r
 436                                 }\r
 437                         }\r
 438                 }\r
 439         }\r
 440         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 441 }\r
 442 \r
 443 \r
 444 int emu_ReadConfig(int game)\r
 445 {\r
 446         FILE *f;\r
 447         char cfg[512];\r
 448         int bread = 0;\r
 449 \r
 450         if (!game)\r
 451         {\r
 452                 // set default config\r
 453                 memset(&currentConfig, 0, sizeof(currentConfig));\r
 454                 currentConfig.lastRomFile[0] = 0;\r
 455                 currentConfig.EmuOpt  = 0x1f | 0xc00; // | cd_leds | cd_cdda\r
 456                 currentConfig.PicoOpt = 0x0f | 0x200; // | use_940\r
 457                 currentConfig.PsndRate = 44100;\r
 458                 currentConfig.PicoRegion = 0; // auto\r
 459                 currentConfig.Frameskip = -1; // auto\r
 460                 currentConfig.CPUclock = 200;\r
 461                 currentConfig.volume = 50;\r
 462                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 463                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 464                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 465                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 466                 currentConfig.KeyBinds[14] = 1<<4;\r
 467                 currentConfig.KeyBinds[13] = 1<<5;\r
 468                 currentConfig.KeyBinds[12] = 1<<6;\r
 469                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 470                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 471                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 472                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 473                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 474                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 475                 currentConfig.gamma = 100;\r
 476                 strncpy(cfg, PicoConfigFile, 511);\r
 477                 cfg[511] = 0;\r
 478         } else {\r
 479                 romfname_ext(cfg, ".pbcfg");\r
 480         }\r
 481 \r
 482         printf("emu_ReadConfig: %s ", cfg);\r
 483         f = fopen(cfg, "rb");\r
 484         if (f) {\r
 485                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 486                 fclose(f);\r
 487         }\r
 488         printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 489 \r
 490         PicoOpt = currentConfig.PicoOpt;\r
 491         PsndRate = currentConfig.PsndRate;\r
 492         PicoRegionOverride = currentConfig.PicoRegion;\r
 493         if (PicoOpt & 0x20) {\r
 494                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 495                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 496         }\r
 497         // some sanity checks\r
 498         if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 499         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 500         // if volume keys are unbound, bind them to volume control\r
 501         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 502                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 503                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 504         }\r
 505 \r
 506         return (bread == sizeof(currentConfig));\r
 507 }\r
 508 \r
 509 \r
 510 int emu_WriteConfig(int game)\r
 511 {\r
 512         FILE *f;\r
 513         char cfg[512];\r
 514         int bwrite = 0;\r
 515 \r
 516         if (!game)\r
 517         {\r
 518                 strncpy(cfg, PicoConfigFile, 511);\r
 519                 cfg[511] = 0;\r
 520         } else {\r
 521                 romfname_ext(cfg, ".pbcfg");\r
 522         }\r
 523 \r
 524         printf("emu_WriteConfig: %s ", cfg);\r
 525         f = fopen(cfg, "wb");\r
 526         if (f) {\r
 527                 currentConfig.PicoOpt = PicoOpt;\r
 528                 currentConfig.PsndRate = PsndRate;\r
 529                 currentConfig.PicoRegion = PicoRegionOverride;\r
 530                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 531                 fflush(f);\r
 532                 fclose(f);\r
 533                 sync();\r
 534         }\r
 535         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 536 \r
 537         return (bwrite == sizeof(currentConfig));\r
 538 }\r
 539 \r
 540 \r
 541 void emu_Deinit(void)\r
 542 {\r
 543         // save SRAM\r
 544         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 545                 emu_SaveLoadGame(0, 1);\r
 546                 SRam.changed = 0;\r
 547         }\r
 548 \r
 549         if (!(currentConfig.EmuOpt & 0x20))\r
 550                 emu_WriteConfig(0);\r
 551         free(framebuff);\r
 552 \r
 553         PicoExit();\r
 554 //      fclose(logf);\r
 555 \r
 556         // restore gamma\r
 557         if (gp2x_old_gamma != 100)\r
 558                 set_gamma(100);\r
 559 }\r
 560 \r
 561 \r
 562 void osd_text(int x, int y, char *text)\r
 563 {\r
 564         int len = strlen(text)*8;\r
 565 \r
 566         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 567                 int *p, i, h;\r
 568                 x &= ~3; // align x\r
 569                 len = (len+3) >> 2;\r
 570                 for (h = 0; h < 8; h++) {\r
 571                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 572                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 573                 }\r
 574                 gp2x_text_out8_2(x, y, text, 0xf0);\r
 575         } else {\r
 576                 int *p, i, h;\r
 577                 x &= ~1; // align x\r
 578                 len = (len+1) >> 1;\r
 579                 for (h = 0; h < 8; h++) {\r
 580                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 581                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 582                 }\r
 583                 gp2x_text_out15(x, y, text);\r
 584         }\r
 585 }\r
 586 \r
 587 static void cd_leds(void)\r
 588 {\r
 589         // mmu problems?\r
 590 //      static\r
 591         int old_reg;\r
 592 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
 593         old_reg = Pico_mcd->s68k_regs[0];\r
 594 \r
 595         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 596                 // 8-bit modes\r
 597                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 598                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 599                 *(unsigned int *)((char *)gp2x_screen + 320*2+306) =\r
 600                 *(unsigned int *)((char *)gp2x_screen + 320*3+306) =\r
 601                 *(unsigned int *)((char *)gp2x_screen + 320*4+306) = col_g;\r
 602                 *(unsigned int *)((char *)gp2x_screen + 320*2+312) =\r
 603                 *(unsigned int *)((char *)gp2x_screen + 320*3+312) =\r
 604                 *(unsigned int *)((char *)gp2x_screen + 320*4+312) = col_r;\r
 605         } else {\r
 606                 // 16-bit modes\r
 607                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+306);\r
 608                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 609                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 610                 *p++ = col_g; *p++ = col_g; p++; *p++ = col_r; *p++ = col_r; p += 320/2 - 10/2;\r
 611                 *p++ = col_g; *p++ = col_g; p++; *p++ = col_r; *p++ = col_r; p += 320/2 - 10/2;\r
 612                 *p++ = col_g; *p++ = col_g; p++; *p++ = col_r; *p++ = col_r; p += 320/2 - 10/2;\r
 613         }\r
 614 }\r
 615 \r
 616 static int EmuScan16(unsigned int num, void *sdata)\r
 617 {\r
 618         if (!(Pico.video.reg[1]&8)) num += 8;\r
 619         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 620 \r
 621         return 0;\r
 622 }\r
 623 \r
 624 static int EmuScan8(unsigned int num, void *sdata)\r
 625 {\r
 626         if (!(Pico.video.reg[1]&8)) num += 8;\r
 627         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 628 \r
 629         return 0;\r
 630 }\r
 631 \r
 632 static int localPal[0x100];\r
 633 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 634 \r
 635 static void blit(char *fps, char *notice)\r
 636 {\r
 637         int emu_opt = currentConfig.EmuOpt;\r
 638 \r
 639         if (PicoOpt&0x10) {\r
 640                 // 8bit fast renderer\r
 641                 if (Pico.m.dirtyPal) {\r
 642                         Pico.m.dirtyPal = 0;\r
 643                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 644                         // feed new palette to our device\r
 645                         gp2x_video_setpalette(localPal, 0x40);\r
 646                 }\r
 647                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 648         } else if (!(emu_opt&0x80)) {\r
 649                 // 8bit accurate renderer\r
 650                 if (Pico.m.dirtyPal) {\r
 651                         Pico.m.dirtyPal = 0;\r
 652                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 653                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 654                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 655                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 656                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 657                                 localPal[0xc0] = 0x0000c000;\r
 658                                 localPal[0xd0] = 0x00c00000;\r
 659                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 660                                 localPal[0xf0] = 0x00ffffff;\r
 661                                 gp2x_video_setpalette(localPal, 0x100);\r
 662                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 663                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 664                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 665                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 666                                 gp2x_video_setpalette(localPal, 0xc0);\r
 667                         } else {\r
 668                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 669                                 gp2x_video_setpalette(localPal, 0x40);\r
 670                         }\r
 671                 }\r
 672         }\r
 673 \r
 674         if (notice) osd_text(4, 232, notice);\r
 675         if (emu_opt & 2)\r
 676                 osd_text(osd_fps_x, 232, fps);\r
 677         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 678                 cd_leds();\r
 679 \r
 680         //gp2x_video_wait_vsync();\r
 681         gp2x_video_flip();\r
 682 \r
 683         if (!(PicoOpt&0x10)) {\r
 684                 if (!(Pico.video.reg[1]&8)) {\r
 685                         if (currentConfig.EmuOpt&0x80) {\r
 686                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 687                         } else {\r
 688                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 689                         }\r
 690                 } else {\r
 691                         DrawLineDest = gp2x_screen;\r
 692                 }\r
 693         }\r
 694 }\r
 695 \r
 696 \r
 697 // clears whole screen or just the notice area (in all buffers)\r
 698 static void clearArea(int full)\r
 699 {\r
 700         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 701                 // 8-bit renderers\r
 702                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 703                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 704         } else {\r
 705                 // 16bit accurate renderer\r
 706                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 707                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 708         }\r
 709 }\r
 710 \r
 711 \r
 712 static void vidResetMode(void)\r
 713 {\r
 714         if (PicoOpt&0x10) {\r
 715                 gp2x_video_changemode(8);\r
 716         } else if (currentConfig.EmuOpt&0x80) {\r
 717                 gp2x_video_changemode(15);\r
 718                 PicoDrawSetColorFormat(1);\r
 719                 PicoScan = EmuScan16;\r
 720                 PicoScan(0, 0);\r
 721         } else {\r
 722                 gp2x_video_changemode(8);\r
 723                 PicoDrawSetColorFormat(2);\r
 724                 PicoScan = EmuScan8;\r
 725                 PicoScan(0, 0);\r
 726         }\r
 727         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 728                 // setup pal for 8-bit modes\r
 729                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 730                 localPal[0xd0] = 0x00c00000;\r
 731                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 732                 localPal[0xf0] = 0x00ffffff;\r
 733                 gp2x_video_setpalette(localPal, 0x100);\r
 734                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 735                 gp2x_video_flip();\r
 736         }\r
 737         Pico.m.dirtyPal = 1;\r
 738         // reset scaling\r
 739         gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 740 }\r
 741 \r
 742 \r
 743 static int check_save_file(void)\r
 744 {\r
 745         char saveFname[512];\r
 746         char ext[16];\r
 747         FILE *f;\r
 748 \r
 749         ext[0] = 0;\r
 750         if(state_slot > 0 && state_slot < 10) sprintf(ext, ".%i", state_slot);\r
 751         strcat(ext, ".mds");\r
 752         if(currentConfig.EmuOpt & 8) strcat(ext, ".gz");\r
 753 \r
 754         romfname_ext(saveFname, ext);\r
 755         if ((f = fopen(saveFname, "rb"))) {\r
 756                 fclose(f);\r
 757                 return 1;\r
 758         }\r
 759         return 0;\r
 760 }\r
 761 \r
 762 static void RunEvents(unsigned int which)\r
 763 {\r
 764         if(which & 0x1800) { // save or load (but not both)\r
 765                 int do_it = 1;\r
 766                 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && check_save_file()) {\r
 767                         unsigned long keys;\r
 768                         blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
 769                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 770                                 usleep(50*1024);\r
 771                         if (keys & GP2X_X) do_it = 0;\r
 772                         clearArea(0);\r
 773                 }\r
 774                 if (do_it) {\r
 775                         blit("", (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 776                         emu_SaveLoadGame(which & 0x1000, 0);\r
 777                 }\r
 778 \r
 779                 reset_timing = 1;\r
 780         }\r
 781         if(which & 0x0400) { // switch renderer\r
 782                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 783                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 784                 else   currentConfig.EmuOpt &= ~0x80;\r
 785 \r
 786                 vidResetMode();\r
 787 \r
 788                 if (PicoOpt&0x10) {\r
 789                         strcpy(noticeMsg, " 8bit fast renderer");\r
 790                 } else if (currentConfig.EmuOpt&0x80) {\r
 791                         strcpy(noticeMsg, "16bit accurate renderer");\r
 792                 } else {\r
 793                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 794                 }\r
 795 \r
 796                 gettimeofday(&noticeMsgTime, 0);\r
 797         }\r
 798         if(which & 0x0300) {\r
 799                 if(which&0x0200) {\r
 800                         state_slot -= 1;\r
 801                         if(state_slot < 0) state_slot = 9;\r
 802                 } else {\r
 803                         state_slot += 1;\r
 804                         if(state_slot > 9) state_slot = 0;\r
 805                 }\r
 806                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, check_save_file() ? "USED" : "FREE");\r
 807                 gettimeofday(&noticeMsgTime, 0);\r
 808         }\r
 809         if(which & 0x0080) {\r
 810                 engineState = PGS_Menu;\r
 811         }\r
 812 }\r
 813 \r
 814 \r
 815 static void updateMovie(void)\r
 816 {\r
 817         int offs = Pico.m.frame_count*3 + 0x40;\r
 818         if (offs+3 > movie_size) {\r
 819                 free(movie_data);\r
 820                 movie_data = 0;\r
 821                 strcpy(noticeMsg, "END OF MOVIE.");\r
 822                 printf("END OF MOVIE.\n");\r
 823                 gettimeofday(&noticeMsgTime, 0);\r
 824         } else {\r
 825                 // MXYZ SACB RLDU\r
 826                 PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 827                 if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 828                 if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 829                 if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 830                 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 831                 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 832                 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 833                 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 834                 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 835                 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 836                 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 837                 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 838                 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 839                 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 840         }\r
 841 }\r
 842 \r
 843 \r
 844 static void updateKeys(void)\r
 845 {\r
 846         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 847         static unsigned long prevEvents = 0;\r
 848         int joy, i;\r
 849 \r
 850         keys = gp2x_joystick_read(0);\r
 851         if (keys & GP2X_SELECT) {\r
 852                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 853                 // wait until select is released, so menu would not resume game\r
 854                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 855         }\r
 856 \r
 857         keys &= CONFIGURABLE_KEYS;\r
 858 \r
 859         for (i = 0; i < 32; i++)\r
 860         {\r
 861                 if (keys & (1 << i)) {\r
 862                         int pl, acts = currentConfig.KeyBinds[i];\r
 863                         if (!acts) continue;\r
 864                         pl = (acts >> 16) & 1;\r
 865                         if (combo_keys & (1 << i)) {\r
 866                                 int u = i+1, acts_c = acts & combo_acts;\r
 867                                 // let's try to find the other one\r
 868                                 if (acts_c)\r
 869                                         for (; u < 32; u++)\r
 870                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 871                                                         allActions[pl] |= acts_c;\r
 872                                                         keys &= ~((1 << i) | (1 << u));\r
 873                                                         break;\r
 874                                                 }\r
 875                                 // add non-combo actions if combo ones were not found\r
 876                                 if (!acts_c || u == 32)\r
 877                                         allActions[pl] |= acts & ~combo_acts;\r
 878                         } else {\r
 879                                 allActions[pl] |= acts;\r
 880                         }\r
 881                 }\r
 882         }\r
 883 \r
 884         // add joy inputs\r
 885         if (num_of_joys > 0)\r
 886         {\r
 887                 gp2x_usbjoy_update();\r
 888                 for (joy = 0; joy < num_of_joys; joy++) {\r
 889                         int keys = gp2x_usbjoy_check2(joy);\r
 890                         for (i = 0; i < 32; i++) {\r
 891                                 if (keys & (1 << i)) {\r
 892                                         int acts = currentConfig.JoyBinds[joy][i];\r
 893                                         int pl = (acts >> 16) & 1;\r
 894                                         allActions[pl] |= acts;\r
 895                                 }\r
 896                         }\r
 897                 }\r
 898         }\r
 899 \r
 900         PicoPad[0] = (unsigned short) allActions[0];\r
 901         PicoPad[1] = (unsigned short) allActions[1];\r
 902 \r
 903         events = (allActions[0] | allActions[1]) >> 16;\r
 904 \r
 905         // volume is treated in special way and triggered every frame\r
 906         if(events & 0x6000) {\r
 907                 int vol = currentConfig.volume;\r
 908                 if (events & 0x2000) {\r
 909                         if (vol < 90) vol++;\r
 910                 } else {\r
 911                         if (vol >  0) vol--;\r
 912                 }\r
 913                 gp2x_sound_volume(vol, vol);\r
 914                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 915                 gettimeofday(&noticeMsgTime, 0);\r
 916                 currentConfig.volume = vol;\r
 917         }\r
 918 \r
 919         events &= ~prevEvents;\r
 920         if (events) RunEvents(events);\r
 921         if (movie_data) updateMovie();\r
 922 \r
 923         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 924 }\r
 925 \r
 926 static int snd_excess_add = 0, snd_excess_cnt = 0; // hack\r
 927 \r
 928 static void updateSound(void)\r
 929 {\r
 930         int len = (PicoOpt&8)?PsndLen*2:PsndLen;\r
 931 \r
 932         snd_excess_cnt += snd_excess_add;\r
 933         if (snd_excess_cnt >= 0x10000) {\r
 934                 snd_excess_cnt -= 0x10000;\r
 935                 if (PicoOpt&8) {\r
 936                         PsndOut[len]   = PsndOut[len-2];\r
 937                         PsndOut[len+1] = PsndOut[len-1];\r
 938                         len+=2;\r
 939                 } else {\r
 940                         PsndOut[len]   = PsndOut[len-1];\r
 941                         len++;\r
 942                 }\r
 943         }\r
 944 \r
 945         gp2x_sound_write(PsndOut, len<<1);\r
 946 }\r
 947 \r
 948 \r
 949 static void SkipFrame(int do_sound)\r
 950 {\r
 951         void *sndbuff_tmp = 0;\r
 952         if (PsndOut && !do_sound) {\r
 953                 sndbuff_tmp = PsndOut;\r
 954                 PsndOut = 0;\r
 955         }\r
 956 \r
 957         PicoSkipFrame=1;\r
 958         PicoFrame();\r
 959         PicoSkipFrame=0;\r
 960 \r
 961         if (sndbuff_tmp && !do_sound) {\r
 962                 PsndOut = sndbuff_tmp;\r
 963         }\r
 964 }\r
 965 \r
 966 \r
 967 static void simpleWait(int thissec, int lim_time)\r
 968 {\r
 969         struct timeval tval;\r
 970 \r
 971         spend_cycles(1024);\r
 972         gettimeofday(&tval, 0);\r
 973         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 974 \r
 975         while(tval.tv_usec < lim_time)\r
 976         {\r
 977                 spend_cycles(1024);\r
 978                 gettimeofday(&tval, 0);\r
 979                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 980         }\r
 981 }\r
 982 \r
 983 \r
 984 void emu_Loop(void)\r
 985 {\r
 986         static int gp2x_old_clock = 200;\r
 987         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
 988         char fpsbuff[24]; // fps count c string\r
 989         struct timeval tval; // timing\r
 990         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
 991         int target_fps, target_frametime, lim_time, i;\r
 992         char *notice = 0;\r
 993 \r
 994         printf("entered emu_Loop()\n");\r
 995 \r
 996         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 997                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 998                 set_FCLK(currentConfig.CPUclock);\r
 999                 gp2x_old_clock = currentConfig.CPUclock;\r
1000                 printf(" done\n");\r
1001         }\r
1002 \r
1003         if (gp2x_old_gamma != currentConfig.gamma) {\r
1004                 set_gamma(currentConfig.gamma);\r
1005                 gp2x_old_gamma = currentConfig.gamma;\r
1006                 printf("updated gamma to %i\n", currentConfig.gamma);\r
1007         }\r
1008 \r
1009         fpsbuff[0] = 0;\r
1010 \r
1011         // make sure we are in correct mode\r
1012         vidResetMode();\r
1013         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
1014         find_combos();\r
1015 \r
1016         // pal/ntsc might have changed, reset related stuff\r
1017         target_fps = Pico.m.pal ? 50 : 60;\r
1018         target_frametime = 1000000/target_fps;\r
1019         reset_timing = 1;\r
1020 \r
1021         // prepare sound stuff\r
1022         if(currentConfig.EmuOpt & 4) {\r
1023                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
1024                         /* if 940 is turned off, we need it to be put back to sleep */\r
1025                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
1026                                 Reset940(1, 2);\r
1027                                 Pause940(1);\r
1028                         }\r
1029                         sound_rerate();\r
1030                 }\r
1031                 //excess_samples = PsndRate - PsndLen*target_fps;\r
1032                 snd_excess_cnt = 0;\r
1033                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
1034                 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
1035                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
1036                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
1037                 PicoWriteSound = updateSound;\r
1038                 PsndOut = calloc((PicoOpt&8) ? (PsndLen*4+4) : (PsndLen*2+2), 1);\r
1039                 PsndRate_old = PsndRate;\r
1040                 PsndLen_real = PsndLen;\r
1041                 PicoOpt_old  = PicoOpt;\r
1042                 pal_old = Pico.m.pal;\r
1043         } else {\r
1044                 PsndOut = 0;\r
1045         }\r
1046 \r
1047         // loop?\r
1048         while (engineState == PGS_Running)\r
1049         {\r
1050                 int modes;\r
1051 \r
1052                 gettimeofday(&tval, 0);\r
1053                 if(reset_timing) {\r
1054                         reset_timing = 0;\r
1055                         thissec = tval.tv_sec;\r
1056                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
1057                 }\r
1058 \r
1059                 // show notice message?\r
1060                 if(noticeMsgTime.tv_sec) {\r
1061                         static int noticeMsgSum;\r
1062                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
1063                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
1064                                 clearArea(0);\r
1065                                 notice = 0;\r
1066                         } else {\r
1067                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
1068                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
1069                                 notice = noticeMsg;\r
1070                         }\r
1071                 }\r
1072 \r
1073                 // check for mode changes\r
1074                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
1075                 if (modes != oldmodes) {\r
1076                         int scalex = 320;\r
1077                         osd_fps_x = OSD_FPS_X;\r
1078                         if (modes & 4) {\r
1079                                 vidCpyM2 = vidCpyM2_40col;\r
1080                         } else {\r
1081                                 if (PicoOpt & 0x100) {\r
1082                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
1083                                         scalex = 256;\r
1084                                         osd_fps_x = OSD_FPS_X - 64;\r
1085                                 } else {\r
1086                                         vidCpyM2 = vidCpyM2_32col;\r
1087                                 }\r
1088                         }\r
1089                         gp2x_video_RGB_setscaling(scalex, 240);\r
1090                         oldmodes = modes;\r
1091                         clearArea(1);\r
1092                 }\r
1093 \r
1094                 // second changed?\r
1095                 if(thissec != tval.tv_sec) {\r
1096 #ifdef BENCHMARK\r
1097                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1098                         if(++bench == 10) {\r
1099                                 bench = 0;\r
1100                                 bench_fps_s = bench_fps;\r
1101                                 bf[bfp++ & 3] = bench_fps;\r
1102                                 bench_fps = 0;\r
1103                         }\r
1104                         bench_fps += frames_shown;\r
1105                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1106 #else\r
1107                         if(currentConfig.EmuOpt & 2)\r
1108                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1109 #endif\r
1110                         thissec = tval.tv_sec;\r
1111 \r
1112                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
1113                                 frames_done = frames_shown = 0;\r
1114                         } else {\r
1115                                 // it is quite common for this implementation to leave 1 fame unfinished\r
1116                                 // when second changes, but we don't want buffer to starve.\r
1117                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
1118                                         updateKeys();\r
1119                                         SkipFrame(1); frames_done++;\r
1120                                 }\r
1121 \r
1122                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
1123                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
1124                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
1125                         }\r
1126                 }\r
1127 \r
1128                 lim_time = (frames_done+1) * target_frametime;\r
1129                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
1130                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
1131                                 updateKeys();\r
1132                                 SkipFrame(1); frames_done++;\r
1133                                 if (PsndOut) { // do framelimitting if sound is enabled\r
1134                                         gettimeofday(&tval, 0);\r
1135                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1136                                         if(tval.tv_usec < lim_time) { // we are too fast\r
1137                                                 simpleWait(thissec, lim_time);\r
1138                                         }\r
1139                                 }\r
1140                                 lim_time += target_frametime;\r
1141                         }\r
1142                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
1143                         // no time left for this frame - skip\r
1144                         updateKeys();\r
1145                         SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
1146                         continue;\r
1147                 }\r
1148 \r
1149                 updateKeys();\r
1150                 PicoFrame();\r
1151 \r
1152 #if 0\r
1153 if (Pico.m.frame_count == 31563) {\r
1154         FILE *f;\r
1155         f = fopen("ram_p.bin", "wb");\r
1156         if (!f) { printf("!f\n"); exit(1); }\r
1157         fwrite(Pico.ram, 1, 0x10000, f);\r
1158         fclose(f);\r
1159         exit(0);\r
1160 }\r
1161 #endif\r
1162 #if 0\r
1163                 // debug\r
1164                 {\r
1165                         #define BYTE unsigned char\r
1166                         #define WORD unsigned short\r
1167                         struct\r
1168                         {\r
1169                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1170                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1171                                 BYTE ImageType;       /* 02h  Image type code */\r
1172                                 WORD CMapStart;       /* 03h  Color map origin */\r
1173                                 WORD CMapLength;      /* 05h  Color map length */\r
1174                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1175                                 WORD XOffset;         /* 08h  X origin of image */\r
1176                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1177                                 WORD Width;           /* 0Ch  Width of image */\r
1178                                 WORD Height;          /* 0Eh  Height of image */\r
1179                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1180                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1181                         } __attribute__((packed)) TGAHEAD;\r
1182                         static unsigned short oldscr[320*240];\r
1183                         FILE *f; char name[128]; int i;\r
1184 \r
1185                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1186                         TGAHEAD.ImageType = 2;\r
1187                         TGAHEAD.Width = 320;\r
1188                         TGAHEAD.Height = 240;\r
1189                         TGAHEAD.PixelDepth = 16;\r
1190                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1191 \r
1192                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1193 \r
1194                         for (i = 0; i < 320*240; i++)\r
1195                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1196                         if (i < 320*240)\r
1197                         {\r
1198                                 for (i = 0; i < 320*240; i++)\r
1199                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1200                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1201                                 f = fopen(name, "wb");\r
1202                                 if (!f) { printf("!f\n"); exit(1); }\r
1203                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1204                                 fwrite(oldscr, 1, 320*240*2, f);\r
1205                                 fclose(f);\r
1206                         }\r
1207                 }\r
1208 #endif\r
1209 \r
1210                 // check time\r
1211                 gettimeofday(&tval, 0);\r
1212                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1213 \r
1214                 // sleep if we are still too fast\r
1215                 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
1216                 {\r
1217                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1218                         gettimeofday(&tval, 0);\r
1219                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1220                         if(tval.tv_usec < lim_time)\r
1221                         {\r
1222                                 // we are too fast\r
1223                                 simpleWait(thissec, lim_time);\r
1224                         }\r
1225                 }\r
1226 \r
1227                 blit(fpsbuff, notice);\r
1228 \r
1229                 frames_done++; frames_shown++;\r
1230         }\r
1231 \r
1232         // save SRAM\r
1233         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1234                 emu_SaveLoadGame(0, 1);\r
1235                 SRam.changed = 0;\r
1236         }\r
1237 \r
1238         if (PsndOut != 0) {\r
1239                 free(PsndOut);\r
1240                 PsndOut = 0;\r
1241         }\r
1242 }\r
1243 \r
1244 \r
1245 void emu_ResetGame(void)\r
1246 {\r
1247         PicoReset(0);\r
1248         reset_timing = 1;\r
1249 }\r
1250 \r
1251 \r
1252 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1253 {\r
1254         return gzread(file, p, _n);\r
1255 }\r
1256 \r
1257 \r
1258 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1259 {\r
1260         return gzwrite(file, p, _n);\r
1261 }\r
1262 \r
1263 typedef unsigned int (*STATE_SL_FUNC)(void *, unsigned int, unsigned int, void *);\r
1264 \r
1265 int emu_SaveLoadGame(int load, int sram)\r
1266 {\r
1267         int ret = 0;\r
1268         char saveFname[512];\r
1269 \r
1270         // make save filename\r
1271         romfname_ext(saveFname, "");\r
1272         if(sram) strcat(saveFname, (PicoMCD&1) ? ".brm" : ".srm");\r
1273         else {\r
1274                 if(state_slot > 0 && state_slot < 10) sprintf(saveFname, "%s.%i", saveFname, state_slot);\r
1275                 strcat(saveFname, ".mds");\r
1276         }\r
1277 \r
1278         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1279 \r
1280         if(sram) {\r
1281                 FILE *sramFile;\r
1282                 int sram_size;\r
1283                 unsigned char *sram_data;\r
1284                 if (PicoMCD&1) {\r
1285                         sram_size = 0x2000;\r
1286                         sram_data = Pico_mcd->bram;\r
1287                 } else {\r
1288                         sram_size = SRam.end-SRam.start+1;\r
1289                         if(SRam.reg_back & 4) sram_size=0x2000;\r
1290                         sram_data = SRam.data;\r
1291                 }\r
1292                 if(!sram_data) return 0; // SRam forcefully disabled for this game\r
1293 \r
1294                 if(load) {\r
1295                         sramFile = fopen(saveFname, "rb");\r
1296                         if(!sramFile) return -1;\r
1297                         fread(sram_data, 1, sram_size, sramFile);\r
1298                         fclose(sramFile);\r
1299                 } else {\r
1300                         // sram save needs some special processing\r
1301                         // see if we have anything to save\r
1302                         for(; sram_size > 0; sram_size--)\r
1303                                 if(sram_data[sram_size-1]) break;\r
1304 \r
1305                         if(sram_size) {\r
1306                                 sramFile = fopen(saveFname, "wb");\r
1307                                 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
1308                                 ret = (ret != sram_size) ? -1 : 0;\r
1309                                 fclose(sramFile);\r
1310                                 sync();\r
1311                         }\r
1312                 }\r
1313                 return ret;\r
1314         }\r
1315         else\r
1316         {\r
1317                 void *PmovFile = NULL;\r
1318                 // try gzip first\r
1319                 if(currentConfig.EmuOpt & 8) {\r
1320                         strcat(saveFname, ".gz");\r
1321                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1322                                 areaRead  = gzRead2;\r
1323                                 areaWrite = gzWrite2;\r
1324                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1325                         } else\r
1326                                 saveFname[strlen(saveFname)-3] = 0;\r
1327                 }\r
1328                 if(!PmovFile) { // gzip failed or was disabled\r
1329                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1330                                 areaRead  = (STATE_SL_FUNC) fread;\r
1331                                 areaWrite = (STATE_SL_FUNC) fwrite;\r
1332                         }\r
1333                 }\r
1334                 if(PmovFile) {\r
1335                         PmovState(load ? 6 : 5, PmovFile);\r
1336                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1337                         if(areaRead == gzRead2)\r
1338                                  gzclose(PmovFile);\r
1339                         else fclose ((FILE *) PmovFile);\r
1340                         PmovFile = 0;\r
1341                         if (!load) sync();\r
1342                         else Pico.m.dirtyPal=1;\r
1343                 } else {\r
1344                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1345                         ret = -1;\r
1346                 }\r
1347 \r
1348                 gettimeofday(&noticeMsgTime, 0);\r
1349                 return ret;\r
1350         }\r
1351 }\r