platform/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.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 460                 currentConfig.Frameskip = -1; // auto\r
 461                 currentConfig.CPUclock = 200;\r
 462                 currentConfig.volume = 50;\r
 463                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 464                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 465                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 466                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 467                 currentConfig.KeyBinds[14] = 1<<4;\r
 468                 currentConfig.KeyBinds[13] = 1<<5;\r
 469                 currentConfig.KeyBinds[12] = 1<<6;\r
 470                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 471                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 472                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 473                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 474                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 475                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 476                 currentConfig.gamma = 100;\r
 477                 strncpy(cfg, PicoConfigFile, 511);\r
 478                 cfg[511] = 0;\r
 479         } else {\r
 480                 romfname_ext(cfg, ".pbcfg");\r
 481         }\r
 482 \r
 483         printf("emu_ReadConfig: %s ", cfg);\r
 484         f = fopen(cfg, "rb");\r
 485         if (f) {\r
 486                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 487                 fclose(f);\r
 488         }\r
 489         printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 490 \r
 491         PicoOpt = currentConfig.PicoOpt;\r
 492         PsndRate = currentConfig.PsndRate;\r
 493         PicoRegionOverride = currentConfig.PicoRegion;\r
 494         PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;\r
 495         if (PicoOpt & 0x20) {\r
 496                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 497                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 498         }\r
 499         // some sanity checks\r
 500         if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 501         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 502         // if volume keys are unbound, bind them to volume control\r
 503         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 504                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 505                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 506         }\r
 507 \r
 508         return (bread == sizeof(currentConfig));\r
 509 }\r
 510 \r
 511 \r
 512 int emu_WriteConfig(int game)\r
 513 {\r
 514         FILE *f;\r
 515         char cfg[512];\r
 516         int bwrite = 0;\r
 517 \r
 518         if (!game)\r
 519         {\r
 520                 strncpy(cfg, PicoConfigFile, 511);\r
 521                 cfg[511] = 0;\r
 522         } else {\r
 523                 romfname_ext(cfg, ".pbcfg");\r
 524         }\r
 525 \r
 526         printf("emu_WriteConfig: %s ", cfg);\r
 527         f = fopen(cfg, "wb");\r
 528         if (f) {\r
 529                 currentConfig.PicoOpt = PicoOpt;\r
 530                 currentConfig.PsndRate = PsndRate;\r
 531                 currentConfig.PicoRegion = PicoRegionOverride;\r
 532                 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;\r
 533                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 534                 fflush(f);\r
 535                 fclose(f);\r
 536                 sync();\r
 537         }\r
 538         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 539 \r
 540         return (bwrite == sizeof(currentConfig));\r
 541 }\r
 542 \r
 543 \r
 544 void emu_Deinit(void)\r
 545 {\r
 546         // save SRAM\r
 547         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 548                 emu_SaveLoadGame(0, 1);\r
 549                 SRam.changed = 0;\r
 550         }\r
 551 \r
 552         if (!(currentConfig.EmuOpt & 0x20))\r
 553                 emu_WriteConfig(0);\r
 554         free(framebuff);\r
 555 \r
 556         PicoExit();\r
 557 //      fclose(logf);\r
 558 \r
 559         // restore gamma\r
 560         if (gp2x_old_gamma != 100)\r
 561                 set_gamma(100);\r
 562 }\r
 563 \r
 564 \r
 565 void osd_text(int x, int y, char *text)\r
 566 {\r
 567         int len = strlen(text)*8;\r
 568 \r
 569         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 570                 int *p, i, h;\r
 571                 x &= ~3; // align x\r
 572                 len = (len+3) >> 2;\r
 573                 for (h = 0; h < 8; h++) {\r
 574                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 575                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 576                 }\r
 577                 gp2x_text_out8_2(x, y, text, 0xf0);\r
 578         } else {\r
 579                 int *p, i, h;\r
 580                 x &= ~1; // align x\r
 581                 len = (len+1) >> 1;\r
 582                 for (h = 0; h < 8; h++) {\r
 583                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 584                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 585                 }\r
 586                 gp2x_text_out15(x, y, text);\r
 587         }\r
 588 }\r
 589 \r
 590 static void cd_leds(void)\r
 591 {\r
 592         // mmu problems?\r
 593 //      static\r
 594         int old_reg;\r
 595 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
 596         old_reg = Pico_mcd->s68k_regs[0];\r
 597 \r
 598         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 599                 // 8-bit modes\r
 600                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 601                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 602                 *(unsigned int *)((char *)gp2x_screen + 320*2+306) =\r
 603                 *(unsigned int *)((char *)gp2x_screen + 320*3+306) =\r
 604                 *(unsigned int *)((char *)gp2x_screen + 320*4+306) = col_g;\r
 605                 *(unsigned int *)((char *)gp2x_screen + 320*2+312) =\r
 606                 *(unsigned int *)((char *)gp2x_screen + 320*3+312) =\r
 607                 *(unsigned int *)((char *)gp2x_screen + 320*4+312) = col_r;\r
 608         } else {\r
 609                 // 16-bit modes\r
 610                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+306);\r
 611                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 612                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 613                 *p++ = col_g; *p++ = col_g; p++; *p++ = col_r; *p++ = col_r; p += 320/2 - 10/2;\r
 614                 *p++ = col_g; *p++ = col_g; p++; *p++ = col_r; *p++ = col_r; p += 320/2 - 10/2;\r
 615                 *p++ = col_g; *p++ = col_g; p++; *p++ = col_r; *p++ = col_r; p += 320/2 - 10/2;\r
 616         }\r
 617 }\r
 618 \r
 619 static int EmuScan16(unsigned int num, void *sdata)\r
 620 {\r
 621         if (!(Pico.video.reg[1]&8)) num += 8;\r
 622         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 623 \r
 624         return 0;\r
 625 }\r
 626 \r
 627 static int EmuScan8(unsigned int num, void *sdata)\r
 628 {\r
 629         if (!(Pico.video.reg[1]&8)) num += 8;\r
 630         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 631 \r
 632         return 0;\r
 633 }\r
 634 \r
 635 static int localPal[0x100];\r
 636 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 637 \r
 638 static void blit(char *fps, char *notice)\r
 639 {\r
 640         int emu_opt = currentConfig.EmuOpt;\r
 641 \r
 642         if (PicoOpt&0x10) {\r
 643                 // 8bit fast renderer\r
 644                 if (Pico.m.dirtyPal) {\r
 645                         Pico.m.dirtyPal = 0;\r
 646                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 647                         // feed new palette to our device\r
 648                         gp2x_video_setpalette(localPal, 0x40);\r
 649                 }\r
 650                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 651         } else if (!(emu_opt&0x80)) {\r
 652                 // 8bit accurate renderer\r
 653                 if (Pico.m.dirtyPal) {\r
 654                         Pico.m.dirtyPal = 0;\r
 655                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 656                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 657                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 658                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 659                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 660                                 localPal[0xc0] = 0x0000c000;\r
 661                                 localPal[0xd0] = 0x00c00000;\r
 662                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 663                                 localPal[0xf0] = 0x00ffffff;\r
 664                                 gp2x_video_setpalette(localPal, 0x100);\r
 665                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 666                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 667                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 668                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 669                                 gp2x_video_setpalette(localPal, 0xc0);\r
 670                         } else {\r
 671                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 672                                 gp2x_video_setpalette(localPal, 0x40);\r
 673                         }\r
 674                 }\r
 675         }\r
 676 \r
 677         if (notice) osd_text(4, 232, notice);\r
 678         if (emu_opt & 2)\r
 679                 osd_text(osd_fps_x, 232, fps);\r
 680         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 681                 cd_leds();\r
 682 \r
 683         //gp2x_video_wait_vsync();\r
 684         gp2x_video_flip();\r
 685 \r
 686         if (!(PicoOpt&0x10)) {\r
 687                 if (!(Pico.video.reg[1]&8)) {\r
 688                         if (currentConfig.EmuOpt&0x80) {\r
 689                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 690                         } else {\r
 691                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 692                         }\r
 693                 } else {\r
 694                         DrawLineDest = gp2x_screen;\r
 695                 }\r
 696         }\r
 697 }\r
 698 \r
 699 \r
 700 // clears whole screen or just the notice area (in all buffers)\r
 701 static void clearArea(int full)\r
 702 {\r
 703         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 704                 // 8-bit renderers\r
 705                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 706                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 707         } else {\r
 708                 // 16bit accurate renderer\r
 709                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 710                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 711         }\r
 712 }\r
 713 \r
 714 \r
 715 static void vidResetMode(void)\r
 716 {\r
 717         if (PicoOpt&0x10) {\r
 718                 gp2x_video_changemode(8);\r
 719         } else if (currentConfig.EmuOpt&0x80) {\r
 720                 gp2x_video_changemode(15);\r
 721                 PicoDrawSetColorFormat(1);\r
 722                 PicoScan = EmuScan16;\r
 723                 PicoScan(0, 0);\r
 724         } else {\r
 725                 gp2x_video_changemode(8);\r
 726                 PicoDrawSetColorFormat(2);\r
 727                 PicoScan = EmuScan8;\r
 728                 PicoScan(0, 0);\r
 729         }\r
 730         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 731                 // setup pal for 8-bit modes\r
 732                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 733                 localPal[0xd0] = 0x00c00000;\r
 734                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 735                 localPal[0xf0] = 0x00ffffff;\r
 736                 gp2x_video_setpalette(localPal, 0x100);\r
 737                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 738                 gp2x_video_flip();\r
 739         }\r
 740         Pico.m.dirtyPal = 1;\r
 741         // reset scaling\r
 742         gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 743 }\r
 744 \r
 745 \r
 746 static int check_save_file(void)\r
 747 {\r
 748         char saveFname[512];\r
 749         char ext[16];\r
 750         FILE *f;\r
 751 \r
 752         ext[0] = 0;\r
 753         if(state_slot > 0 && state_slot < 10) sprintf(ext, ".%i", state_slot);\r
 754         strcat(ext, ".mds");\r
 755         if(currentConfig.EmuOpt & 8) strcat(ext, ".gz");\r
 756 \r
 757         romfname_ext(saveFname, ext);\r
 758         if ((f = fopen(saveFname, "rb"))) {\r
 759                 fclose(f);\r
 760                 return 1;\r
 761         }\r
 762         return 0;\r
 763 }\r
 764 \r
 765 static void RunEvents(unsigned int which)\r
 766 {\r
 767         if(which & 0x1800) { // save or load (but not both)\r
 768                 int do_it = 1;\r
 769                 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && check_save_file()) {\r
 770                         unsigned long keys;\r
 771                         blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
 772                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 773                                 usleep(50*1024);\r
 774                         if (keys & GP2X_X) do_it = 0;\r
 775                         clearArea(0);\r
 776                 }\r
 777                 if (do_it) {\r
 778                         blit("", (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 779                         emu_SaveLoadGame(which & 0x1000, 0);\r
 780                 }\r
 781 \r
 782                 reset_timing = 1;\r
 783         }\r
 784         if(which & 0x0400) { // switch renderer\r
 785                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 786                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 787                 else   currentConfig.EmuOpt &= ~0x80;\r
 788 \r
 789                 vidResetMode();\r
 790 \r
 791                 if (PicoOpt&0x10) {\r
 792                         strcpy(noticeMsg, " 8bit fast renderer");\r
 793                 } else if (currentConfig.EmuOpt&0x80) {\r
 794                         strcpy(noticeMsg, "16bit accurate renderer");\r
 795                 } else {\r
 796                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 797                 }\r
 798 \r
 799                 gettimeofday(&noticeMsgTime, 0);\r
 800         }\r
 801         if(which & 0x0300) {\r
 802                 if(which&0x0200) {\r
 803                         state_slot -= 1;\r
 804                         if(state_slot < 0) state_slot = 9;\r
 805                 } else {\r
 806                         state_slot += 1;\r
 807                         if(state_slot > 9) state_slot = 0;\r
 808                 }\r
 809                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, check_save_file() ? "USED" : "FREE");\r
 810                 gettimeofday(&noticeMsgTime, 0);\r
 811         }\r
 812         if(which & 0x0080) {\r
 813                 engineState = PGS_Menu;\r
 814         }\r
 815 }\r
 816 \r
 817 \r
 818 static void updateMovie(void)\r
 819 {\r
 820         int offs = Pico.m.frame_count*3 + 0x40;\r
 821         if (offs+3 > movie_size) {\r
 822                 free(movie_data);\r
 823                 movie_data = 0;\r
 824                 strcpy(noticeMsg, "END OF MOVIE.");\r
 825                 printf("END OF MOVIE.\n");\r
 826                 gettimeofday(&noticeMsgTime, 0);\r
 827         } else {\r
 828                 // MXYZ SACB RLDU\r
 829                 PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 830                 if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 831                 if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 832                 if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 833                 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 834                 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 835                 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 836                 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 837                 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 838                 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 839                 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 840                 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 841                 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 842                 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 843         }\r
 844 }\r
 845 \r
 846 \r
 847 static void updateKeys(void)\r
 848 {\r
 849         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 850         static unsigned long prevEvents = 0;\r
 851         int joy, i;\r
 852 \r
 853         keys = gp2x_joystick_read(0);\r
 854         if (keys & GP2X_SELECT) {\r
 855                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 856                 // wait until select is released, so menu would not resume game\r
 857                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 858         }\r
 859 \r
 860         keys &= CONFIGURABLE_KEYS;\r
 861 \r
 862         for (i = 0; i < 32; i++)\r
 863         {\r
 864                 if (keys & (1 << i)) {\r
 865                         int pl, acts = currentConfig.KeyBinds[i];\r
 866                         if (!acts) continue;\r
 867                         pl = (acts >> 16) & 1;\r
 868                         if (combo_keys & (1 << i)) {\r
 869                                 int u = i+1, acts_c = acts & combo_acts;\r
 870                                 // let's try to find the other one\r
 871                                 if (acts_c)\r
 872                                         for (; u < 32; u++)\r
 873                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 874                                                         allActions[pl] |= acts_c;\r
 875                                                         keys &= ~((1 << i) | (1 << u));\r
 876                                                         break;\r
 877                                                 }\r
 878                                 // add non-combo actions if combo ones were not found\r
 879                                 if (!acts_c || u == 32)\r
 880                                         allActions[pl] |= acts & ~combo_acts;\r
 881                         } else {\r
 882                                 allActions[pl] |= acts;\r
 883                         }\r
 884                 }\r
 885         }\r
 886 \r
 887         // add joy inputs\r
 888         if (num_of_joys > 0)\r
 889         {\r
 890                 gp2x_usbjoy_update();\r
 891                 for (joy = 0; joy < num_of_joys; joy++) {\r
 892                         int keys = gp2x_usbjoy_check2(joy);\r
 893                         for (i = 0; i < 32; i++) {\r
 894                                 if (keys & (1 << i)) {\r
 895                                         int acts = currentConfig.JoyBinds[joy][i];\r
 896                                         int pl = (acts >> 16) & 1;\r
 897                                         allActions[pl] |= acts;\r
 898                                 }\r
 899                         }\r
 900                 }\r
 901         }\r
 902 \r
 903         PicoPad[0] = (unsigned short) allActions[0];\r
 904         PicoPad[1] = (unsigned short) allActions[1];\r
 905 \r
 906         events = (allActions[0] | allActions[1]) >> 16;\r
 907 \r
 908         // volume is treated in special way and triggered every frame\r
 909         if(events & 0x6000) {\r
 910                 int vol = currentConfig.volume;\r
 911                 if (events & 0x2000) {\r
 912                         if (vol < 90) vol++;\r
 913                 } else {\r
 914                         if (vol >  0) vol--;\r
 915                 }\r
 916                 gp2x_sound_volume(vol, vol);\r
 917                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 918                 gettimeofday(&noticeMsgTime, 0);\r
 919                 currentConfig.volume = vol;\r
 920         }\r
 921 \r
 922         events &= ~prevEvents;\r
 923         if (events) RunEvents(events);\r
 924         if (movie_data) updateMovie();\r
 925 \r
 926         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 927 }\r
 928 \r
 929 static int snd_excess_add = 0, snd_excess_cnt = 0; // hack\r
 930 \r
 931 static void updateSound(void)\r
 932 {\r
 933         int len = (PicoOpt&8)?PsndLen*2:PsndLen;\r
 934 \r
 935         snd_excess_cnt += snd_excess_add;\r
 936         if (snd_excess_cnt >= 0x10000) {\r
 937                 snd_excess_cnt -= 0x10000;\r
 938                 if (PicoOpt&8) {\r
 939                         PsndOut[len]   = PsndOut[len-2];\r
 940                         PsndOut[len+1] = PsndOut[len-1];\r
 941                         len+=2;\r
 942                 } else {\r
 943                         PsndOut[len]   = PsndOut[len-1];\r
 944                         len++;\r
 945                 }\r
 946         }\r
 947 \r
 948         gp2x_sound_write(PsndOut, len<<1);\r
 949 }\r
 950 \r
 951 \r
 952 static void SkipFrame(int do_sound)\r
 953 {\r
 954         void *sndbuff_tmp = 0;\r
 955         if (PsndOut && !do_sound) {\r
 956                 sndbuff_tmp = PsndOut;\r
 957                 PsndOut = 0;\r
 958         }\r
 959 \r
 960         PicoSkipFrame=1;\r
 961         PicoFrame();\r
 962         PicoSkipFrame=0;\r
 963 \r
 964         if (sndbuff_tmp && !do_sound) {\r
 965                 PsndOut = sndbuff_tmp;\r
 966         }\r
 967 }\r
 968 \r
 969 \r
 970 static void simpleWait(int thissec, int lim_time)\r
 971 {\r
 972         struct timeval tval;\r
 973 \r
 974         spend_cycles(1024);\r
 975         gettimeofday(&tval, 0);\r
 976         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 977 \r
 978         while(tval.tv_usec < lim_time)\r
 979         {\r
 980                 spend_cycles(1024);\r
 981                 gettimeofday(&tval, 0);\r
 982                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 983         }\r
 984 }\r
 985 \r
 986 \r
 987 void emu_Loop(void)\r
 988 {\r
 989         static int gp2x_old_clock = 200;\r
 990         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
 991         char fpsbuff[24]; // fps count c string\r
 992         struct timeval tval; // timing\r
 993         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
 994         int target_fps, target_frametime, lim_time, i;\r
 995         char *notice = 0;\r
 996 \r
 997         printf("entered emu_Loop()\n");\r
 998 \r
 999         if (gp2x_old_clock != currentConfig.CPUclock) {\r
1000                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
1001                 set_FCLK(currentConfig.CPUclock);\r
1002                 gp2x_old_clock = currentConfig.CPUclock;\r
1003                 printf(" done\n");\r
1004         }\r
1005 \r
1006         if (gp2x_old_gamma != currentConfig.gamma) {\r
1007                 set_gamma(currentConfig.gamma);\r
1008                 gp2x_old_gamma = currentConfig.gamma;\r
1009                 printf("updated gamma to %i\n", currentConfig.gamma);\r
1010         }\r
1011 \r
1012         fpsbuff[0] = 0;\r
1013 \r
1014         // make sure we are in correct mode\r
1015         vidResetMode();\r
1016         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
1017         find_combos();\r
1018 \r
1019         // pal/ntsc might have changed, reset related stuff\r
1020         target_fps = Pico.m.pal ? 50 : 60;\r
1021         target_frametime = 1000000/target_fps;\r
1022         reset_timing = 1;\r
1023 \r
1024         // prepare sound stuff\r
1025         if(currentConfig.EmuOpt & 4) {\r
1026                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
1027                         /* if 940 is turned off, we need it to be put back to sleep */\r
1028                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
1029                                 Reset940(1, 2);\r
1030                                 Pause940(1);\r
1031                         }\r
1032                         sound_rerate();\r
1033                 }\r
1034                 //excess_samples = PsndRate - PsndLen*target_fps;\r
1035                 snd_excess_cnt = 0;\r
1036                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
1037                 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
1038                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
1039                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
1040                 PicoWriteSound = updateSound;\r
1041                 PsndOut = calloc((PicoOpt&8) ? (PsndLen*4+4) : (PsndLen*2+2), 1);\r
1042                 PsndRate_old = PsndRate;\r
1043                 PsndLen_real = PsndLen;\r
1044                 PicoOpt_old  = PicoOpt;\r
1045                 pal_old = Pico.m.pal;\r
1046         } else {\r
1047                 PsndOut = 0;\r
1048         }\r
1049 \r
1050         // loop?\r
1051         while (engineState == PGS_Running)\r
1052         {\r
1053                 int modes;\r
1054 \r
1055                 gettimeofday(&tval, 0);\r
1056                 if(reset_timing) {\r
1057                         reset_timing = 0;\r
1058                         thissec = tval.tv_sec;\r
1059                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
1060                 }\r
1061 \r
1062                 // show notice message?\r
1063                 if(noticeMsgTime.tv_sec) {\r
1064                         static int noticeMsgSum;\r
1065                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
1066                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
1067                                 clearArea(0);\r
1068                                 notice = 0;\r
1069                         } else {\r
1070                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
1071                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
1072                                 notice = noticeMsg;\r
1073                         }\r
1074                 }\r
1075 \r
1076                 // check for mode changes\r
1077                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
1078                 if (modes != oldmodes) {\r
1079                         int scalex = 320;\r
1080                         osd_fps_x = OSD_FPS_X;\r
1081                         if (modes & 4) {\r
1082                                 vidCpyM2 = vidCpyM2_40col;\r
1083                         } else {\r
1084                                 if (PicoOpt & 0x100) {\r
1085                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
1086                                         scalex = 256;\r
1087                                         osd_fps_x = OSD_FPS_X - 64;\r
1088                                 } else {\r
1089                                         vidCpyM2 = vidCpyM2_32col;\r
1090                                 }\r
1091                         }\r
1092                         gp2x_video_RGB_setscaling(scalex, 240);\r
1093                         oldmodes = modes;\r
1094                         clearArea(1);\r
1095                 }\r
1096 \r
1097                 // second changed?\r
1098                 if(thissec != tval.tv_sec) {\r
1099 #ifdef BENCHMARK\r
1100                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1101                         if(++bench == 10) {\r
1102                                 bench = 0;\r
1103                                 bench_fps_s = bench_fps;\r
1104                                 bf[bfp++ & 3] = bench_fps;\r
1105                                 bench_fps = 0;\r
1106                         }\r
1107                         bench_fps += frames_shown;\r
1108                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1109 #else\r
1110                         if(currentConfig.EmuOpt & 2)\r
1111                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1112 #endif\r
1113                         thissec = tval.tv_sec;\r
1114 \r
1115                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
1116                                 frames_done = frames_shown = 0;\r
1117                         } else {\r
1118                                 // it is quite common for this implementation to leave 1 fame unfinished\r
1119                                 // when second changes, but we don't want buffer to starve.\r
1120                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
1121                                         updateKeys();\r
1122                                         SkipFrame(1); frames_done++;\r
1123                                 }\r
1124 \r
1125                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
1126                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
1127                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
1128                         }\r
1129                 }\r
1130 \r
1131                 lim_time = (frames_done+1) * target_frametime;\r
1132                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
1133                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
1134                                 updateKeys();\r
1135                                 SkipFrame(1); frames_done++;\r
1136                                 if (PsndOut) { // do framelimitting if sound is enabled\r
1137                                         gettimeofday(&tval, 0);\r
1138                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1139                                         if(tval.tv_usec < lim_time) { // we are too fast\r
1140                                                 simpleWait(thissec, lim_time);\r
1141                                         }\r
1142                                 }\r
1143                                 lim_time += target_frametime;\r
1144                         }\r
1145                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
1146                         // no time left for this frame - skip\r
1147                         updateKeys();\r
1148                         SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
1149                         continue;\r
1150                 }\r
1151 \r
1152                 updateKeys();\r
1153                 PicoFrame();\r
1154 \r
1155 #if 0\r
1156 if (Pico.m.frame_count == 31563) {\r
1157         FILE *f;\r
1158         f = fopen("ram_p.bin", "wb");\r
1159         if (!f) { printf("!f\n"); exit(1); }\r
1160         fwrite(Pico.ram, 1, 0x10000, f);\r
1161         fclose(f);\r
1162         exit(0);\r
1163 }\r
1164 #endif\r
1165 #if 0\r
1166                 // debug\r
1167                 {\r
1168                         #define BYTE unsigned char\r
1169                         #define WORD unsigned short\r
1170                         struct\r
1171                         {\r
1172                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1173                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1174                                 BYTE ImageType;       /* 02h  Image type code */\r
1175                                 WORD CMapStart;       /* 03h  Color map origin */\r
1176                                 WORD CMapLength;      /* 05h  Color map length */\r
1177                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1178                                 WORD XOffset;         /* 08h  X origin of image */\r
1179                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1180                                 WORD Width;           /* 0Ch  Width of image */\r
1181                                 WORD Height;          /* 0Eh  Height of image */\r
1182                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1183                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1184                         } __attribute__((packed)) TGAHEAD;\r
1185                         static unsigned short oldscr[320*240];\r
1186                         FILE *f; char name[128]; int i;\r
1187 \r
1188                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1189                         TGAHEAD.ImageType = 2;\r
1190                         TGAHEAD.Width = 320;\r
1191                         TGAHEAD.Height = 240;\r
1192                         TGAHEAD.PixelDepth = 16;\r
1193                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1194 \r
1195                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1196 \r
1197                         for (i = 0; i < 320*240; i++)\r
1198                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1199                         if (i < 320*240)\r
1200                         {\r
1201                                 for (i = 0; i < 320*240; i++)\r
1202                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1203                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1204                                 f = fopen(name, "wb");\r
1205                                 if (!f) { printf("!f\n"); exit(1); }\r
1206                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1207                                 fwrite(oldscr, 1, 320*240*2, f);\r
1208                                 fclose(f);\r
1209                         }\r
1210                 }\r
1211 #endif\r
1212 \r
1213                 // check time\r
1214                 gettimeofday(&tval, 0);\r
1215                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1216 \r
1217                 // sleep if we are still too fast\r
1218                 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
1219                 {\r
1220                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1221                         gettimeofday(&tval, 0);\r
1222                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1223                         if(tval.tv_usec < lim_time)\r
1224                         {\r
1225                                 // we are too fast\r
1226                                 simpleWait(thissec, lim_time);\r
1227                         }\r
1228                 }\r
1229 \r
1230                 blit(fpsbuff, notice);\r
1231 \r
1232                 frames_done++; frames_shown++;\r
1233         }\r
1234 \r
1235         // save SRAM\r
1236         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1237                 blit("", "Writing SRAM/BRAM..");\r
1238                 emu_SaveLoadGame(0, 1);\r
1239                 SRam.changed = 0;\r
1240         }\r
1241 \r
1242         if (PsndOut != 0) {\r
1243                 free(PsndOut);\r
1244                 PsndOut = 0;\r
1245         }\r
1246 }\r
1247 \r
1248 \r
1249 void emu_ResetGame(void)\r
1250 {\r
1251         PicoReset(0);\r
1252         reset_timing = 1;\r
1253 }\r
1254 \r
1255 \r
1256 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1257 {\r
1258         return gzread(file, p, _n);\r
1259 }\r
1260 \r
1261 \r
1262 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1263 {\r
1264         return gzwrite(file, p, _n);\r
1265 }\r
1266 \r
1267 typedef unsigned int (*STATE_SL_FUNC)(void *, unsigned int, unsigned int, void *);\r
1268 \r
1269 int emu_SaveLoadGame(int load, int sram)\r
1270 {\r
1271         int ret = 0;\r
1272         char saveFname[512];\r
1273 \r
1274         // make save filename\r
1275         romfname_ext(saveFname, "");\r
1276         if(sram) strcat(saveFname, (PicoMCD&1) ? ".brm" : ".srm");\r
1277         else {\r
1278                 if(state_slot > 0 && state_slot < 10) sprintf(saveFname, "%s.%i", saveFname, state_slot);\r
1279                 strcat(saveFname, ".mds");\r
1280         }\r
1281 \r
1282         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1283 \r
1284         if(sram) {\r
1285                 FILE *sramFile;\r
1286                 int sram_size;\r
1287                 unsigned char *sram_data;\r
1288                 if (PicoMCD&1) {\r
1289                         sram_size = 0x2000;\r
1290                         sram_data = Pico_mcd->bram;\r
1291                 } else {\r
1292                         sram_size = SRam.end-SRam.start+1;\r
1293                         if(SRam.reg_back & 4) sram_size=0x2000;\r
1294                         sram_data = SRam.data;\r
1295                 }\r
1296                 if(!sram_data) return 0; // SRam forcefully disabled for this game\r
1297 \r
1298                 if(load) {\r
1299                         sramFile = fopen(saveFname, "rb");\r
1300                         if(!sramFile) return -1;\r
1301                         fread(sram_data, 1, sram_size, sramFile);\r
1302                         fclose(sramFile);\r
1303                 } else {\r
1304                         // sram save needs some special processing\r
1305                         // see if we have anything to save\r
1306                         for(; sram_size > 0; sram_size--)\r
1307                                 if(sram_data[sram_size-1]) break;\r
1308 \r
1309                         if(sram_size) {\r
1310                                 sramFile = fopen(saveFname, "wb");\r
1311                                 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
1312                                 ret = (ret != sram_size) ? -1 : 0;\r
1313                                 fclose(sramFile);\r
1314                                 sync();\r
1315                         }\r
1316                 }\r
1317                 return ret;\r
1318         }\r
1319         else\r
1320         {\r
1321                 void *PmovFile = NULL;\r
1322                 // try gzip first\r
1323                 if(currentConfig.EmuOpt & 8) {\r
1324                         strcat(saveFname, ".gz");\r
1325                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1326                                 areaRead  = gzRead2;\r
1327                                 areaWrite = gzWrite2;\r
1328                                 areaEof   = (areaeof *) gzeof;\r
1329                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1330                         } else\r
1331                                 saveFname[strlen(saveFname)-3] = 0;\r
1332                 }\r
1333                 if(!PmovFile) { // gzip failed or was disabled\r
1334                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1335                                 areaRead  = (arearw *) fread;\r
1336                                 areaWrite = (arearw *) fwrite;\r
1337                                 areaEof   = (areaeof *) feof;\r
1338                         }\r
1339                 }\r
1340                 if(PmovFile) {\r
1341                         PmovState(load ? 6 : 5, PmovFile);\r
1342                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1343                         if(areaRead == gzRead2)\r
1344                                  gzclose(PmovFile);\r
1345                         else fclose ((FILE *) PmovFile);\r
1346                         PmovFile = 0;\r
1347                         if (!load) sync();\r
1348                         else Pico.m.dirtyPal=1;\r
1349                 } else {\r
1350                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1351                         ret = -1;\r
1352                 }\r
1353 \r
1354                 gettimeofday(&noticeMsgTime, 0);\r
1355                 return ret;\r
1356         }\r
1357 }\r