gp2x/emu.c

   1 // (c) Copyright 2006 notaz, All rights reserved.\r
   2 // Free for non-commercial use.\r
   3 \r
   4 // For commercial use, separate licencing terms must be obtained.\r
   5 \r
   6 #include <stdio.h>\r
   7 #include <stdlib.h>\r
   8 #include <sys/time.h>\r
   9 #include <sys/stat.h>\r
  10 #include <sys/types.h>\r
  11 #include <linux/limits.h>\r
  12 #include <ctype.h>\r
  13 #include <unistd.h>\r
  14 \r
  15 #include <stdarg.h>\r
  16 \r
  17 #include "emu.h"\r
  18 #include "gp2x.h"\r
  19 #include "usbjoy.h"\r
  20 #include "menu.h"\r
  21 #include "asmutils.h"\r
  22 #include "cpuctrl.h"\r
  23 \r
  24 #include "Pico/PicoInt.h"\r
  25 #include "zlib/zlib.h"\r
  26 \r
  27 \r
  28 #ifdef BENCHMARK\r
  29 #define OSD_FPS_X 220\r
  30 #else\r
  31 #define OSD_FPS_X 260\r
  32 #endif\r
  33 \r
  34 // PicoPad[] format: SACB RLDU\r
  35 char *actionNames[] = {\r
  36         "UP", "DOWN", "LEFT", "RIGHT", "B", "C", "A", "START",\r
  37         0, 0, 0, 0, 0, 0, 0, 0, // Z, Y, X, MODE (enabled only when needed), ?, ?, ?, ?\r
  38         0, 0, 0, 0, 0, 0, 0, "ENTER MENU", // player2_flag, ?, ?, ?, ?, ?, ?, menu\r
  39         "NEXT SAVE SLOT", "PREV SAVE SLOT", "SWITCH RENDERER", "SAVE STATE",\r
  40         "LOAD STATE", "VOLUME UP", "VOLUME DOWN", "DONE"\r
  41 };\r
  42 \r
  43 int engineState;\r
  44 int select_exits = 0;\r
  45 char *PicoConfigFile = "picoconfig.bin";\r
  46 currentConfig_t currentConfig;\r
  47 \r
  48 char romFileName[PATH_MAX];\r
  49 unsigned char *rom_data = NULL;\r
  50 \r
  51 extern int crashed_940;\r
  52 \r
  53 static short sndBuffer[2*44100/50];\r
  54 static char noticeMsg[64];                                      // notice msg to draw\r
  55 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  56 static int reset_timing, osd_fps_x;\r
  57 static int combo_keys = 0, combo_acts = 0;      // keys and actions which need button combos\r
  58 static int gp2x_old_gamma = 100;\r
  59 static unsigned char *movie_data = NULL;\r
  60 static int movie_size = 0;\r
  61 unsigned char *framebuff = 0;  // temporary buffer for alt renderer\r
  62 int state_slot = 0;\r
  63 \r
  64 /*\r
  65 // tmp\r
  66 static FILE *logf = NULL;\r
  67 \r
  68 void pprintf(char *texto, ...)\r
  69 {\r
  70         va_list args;\r
  71 \r
  72         va_start(args,texto);\r
  73         vfprintf(logf,texto,args);\r
  74         va_end(args);\r
  75         fflush(logf);\r
  76         sync();\r
  77 }\r
  78 */\r
  79 // utilities\r
  80 static void strlwr(char* string)\r
  81 {\r
  82         while ( (*string++ = (char)tolower(*string)) );\r
  83 }\r
  84 \r
  85 static int try_rfn_cut(void)\r
  86 {\r
  87         FILE *tmp;\r
  88         char *p;\r
  89 \r
  90         p = romFileName + strlen(romFileName) - 1;\r
  91         for (; p > romFileName; p--)\r
  92                 if (*p == '.') break;\r
  93         *p = 0;\r
  94 \r
  95         if((tmp = fopen(romFileName, "rb"))) {\r
  96                 fclose(tmp);\r
  97                 return 1;\r
  98         }\r
  99         return 0;\r
 100 }\r
 101 \r
 102 static void get_ext(char *file, char *ext)\r
 103 {\r
 104         char *p;\r
 105 \r
 106         p = file + strlen(file) - 4;\r
 107         if (p < file) p = file;\r
 108         strncpy(ext, p, 4);\r
 109         ext[4] = 0;\r
 110         strlwr(ext);\r
 111 }\r
 112 \r
 113 char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };\r
 114 char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303",   "eu_mcd1_9210" };\r
 115 char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
 116 \r
 117 extern char **g_argv;\r
 118 \r
 119 int find_bios(int region, char **bios_file)\r
 120 {\r
 121         static char bios_path[1024];\r
 122         int i, j, count;\r
 123         char **files;\r
 124         FILE *f = NULL;\r
 125 \r
 126         if (region == 4) { // US\r
 127                 files = biosfiles_us;\r
 128                 count = sizeof(biosfiles_us) / sizeof(char *);\r
 129         } else if (region == 8) { // EU\r
 130                 files = biosfiles_eu;\r
 131                 count = sizeof(biosfiles_eu) / sizeof(char *);\r
 132         } else if (region == 1 || region == 2) {\r
 133                 files = biosfiles_jp;\r
 134                 count = sizeof(biosfiles_jp) / sizeof(char *);\r
 135         } else {\r
 136                 return 0;\r
 137         }\r
 138 \r
 139         for (i = 0; i < count; i++)\r
 140         {\r
 141                 strncpy(bios_path, g_argv[0], 1023);\r
 142                 bios_path[1024-32] = 0;\r
 143                 for (j = strlen(bios_path); j > 0; j--)\r
 144                         if (bios_path[j] == '/') { bios_path[j+1] = 0; break; }\r
 145                 strcat(bios_path, files[i]);\r
 146                 strcat(bios_path, ".bin");\r
 147                 f = fopen(bios_path, "rb");\r
 148                 if (f) break;\r
 149 \r
 150                 bios_path[strlen(bios_path) - 4] = 0;\r
 151                 strcat(bios_path, ".zip");\r
 152                 f = fopen(bios_path, "rb");\r
 153                 if (f) break;\r
 154         }\r
 155 \r
 156         if (f) {\r
 157                 printf("using bios: %s\n", bios_path);\r
 158                 fclose(f);\r
 159                 if (bios_file) *bios_file = bios_path;\r
 160                 return 1;\r
 161         } else {\r
 162                 sprintf(menuErrorMsg, "no %s BIOS files found, read docs",\r
 163                         region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 164                 printf("%s\n", menuErrorMsg);\r
 165                 return 0;\r
 166         }\r
 167 }\r
 168 \r
 169 /* checks if romFileName points to valid MegaCD image\r
 170  * if so, checks for suitable BIOS */\r
 171 static int cd_check(char *ext, char **bios_file)\r
 172 {\r
 173         unsigned char buf[32];\r
 174         FILE *cd_f;\r
 175         int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe\r
 176 \r
 177         cd_f = fopen(romFileName, "rb");\r
 178         if (!cd_f) return 0; // let the upper level handle this\r
 179 \r
 180         if (fread(buf, 1, 32, cd_f) != 32) {\r
 181                 fclose(cd_f);\r
 182                 return 0;\r
 183         }\r
 184 \r
 185         if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1;       // Sega CD (ISO)\r
 186         if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2;       // Sega CD (BIN)\r
 187         if (type == 0) {\r
 188                 fclose(cd_f);\r
 189                 return 0;\r
 190         }\r
 191 \r
 192         /* it seems we have a CD image here. Try to detect region and load a suitable BIOS now.. */\r
 193         fseek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
 194         fread(buf, 1, 1, cd_f);\r
 195         fclose(cd_f);\r
 196 \r
 197         if (buf[0] == 0x64) region = 8; // EU\r
 198         if (buf[0] == 0xa1) region = 1; // JAP\r
 199 \r
 200         printf("detected %s Sega/Mega CD image with %s region\n",\r
 201                 type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 202 \r
 203         if (PicoRegionOverride) {\r
 204                 region = PicoRegionOverride;\r
 205                 printf("overrided region to %s\n", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 206         }\r
 207 \r
 208         if(find_bios(region, bios_file))\r
 209                  return type;   // CD and BIOS detected\r
 210 \r
 211         return -1;              // CD detected but load failed\r
 212 }\r
 213 \r
 214 int emu_ReloadRom(void)\r
 215 {\r
 216         unsigned int rom_size = 0;\r
 217         char *used_rom_name = romFileName;\r
 218         char ext[5];\r
 219         FILE *rom;\r
 220         int ret, cd_state;\r
 221 \r
 222         printf("emu_ReloadRom(%s)\n", romFileName);\r
 223 \r
 224         get_ext(romFileName, ext);\r
 225 \r
 226         // detect wrong extensions\r
 227         if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
 228                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 229                 return 0;\r
 230         }\r
 231 \r
 232         // check for movie file\r
 233         if(movie_data) {\r
 234                 free(movie_data);\r
 235                 movie_data = 0;\r
 236         }\r
 237         if(!strcmp(ext, ".gmv")) {\r
 238                 // check for both gmv and rom\r
 239                 int dummy;\r
 240                 FILE *movie_file = fopen(romFileName, "rb");\r
 241                 if(!movie_file) {\r
 242                         sprintf(menuErrorMsg, "Failed to open movie.");\r
 243                         return 0;\r
 244                 }\r
 245                 fseek(movie_file, 0, SEEK_END);\r
 246                 movie_size = ftell(movie_file);\r
 247                 fseek(movie_file, 0, SEEK_SET);\r
 248                 if(movie_size < 64+3) {\r
 249                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 250                         fclose(movie_file);\r
 251                         return 0;\r
 252                 }\r
 253                 movie_data = malloc(movie_size);\r
 254                 if(movie_data == NULL) {\r
 255                         sprintf(menuErrorMsg, "low memory.");\r
 256                         fclose(movie_file);\r
 257                         return 0;\r
 258                 }\r
 259                 fread(movie_data, 1, movie_size, movie_file);\r
 260                 fclose(movie_file);\r
 261                 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
 262                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 263                         return 0;\r
 264                 }\r
 265                 dummy = try_rfn_cut() || try_rfn_cut();\r
 266                 if (!dummy) {\r
 267                         sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
 268                         return 0;\r
 269                 }\r
 270                 get_ext(romFileName, ext);\r
 271         }\r
 272 \r
 273         // check for MegaCD image\r
 274         cd_state = cd_check(ext, &used_rom_name);\r
 275         if (cd_state > 0) {\r
 276                 PicoMCD |= 1;\r
 277                 get_ext(used_rom_name, ext);\r
 278         } else if (cd_state == -1) {\r
 279                 // bios_help() ?\r
 280                 return 0;\r
 281         } else {\r
 282                 if (PicoMCD & 1) PicoExitMCD();\r
 283                 PicoMCD &= ~1;\r
 284         }\r
 285 \r
 286         rom = fopen(used_rom_name, "rb");\r
 287         if(!rom) {\r
 288                 sprintf(menuErrorMsg, "Failed to open rom.");\r
 289                 return 0;\r
 290         }\r
 291 \r
 292         if(rom_data) {\r
 293                 free(rom_data);\r
 294                 rom_data = 0;\r
 295                 rom_size = 0;\r
 296         }\r
 297 \r
 298         // zipfile support\r
 299         if(!strcasecmp(ext, ".zip")) {\r
 300                 fclose(rom);\r
 301                 ret = CartLoadZip(used_rom_name, &rom_data, &rom_size);\r
 302                 if(ret) {\r
 303                         if (ret == 4) strcpy(menuErrorMsg, "No ROMs found in zip.");\r
 304                         else sprintf(menuErrorMsg, "Unzip failed with code %i", ret);\r
 305                         printf("%s\n", menuErrorMsg);\r
 306                         return 0;\r
 307                 }\r
 308         } else {\r
 309                 if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
 310                         sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
 311                         printf("%s\n", menuErrorMsg);\r
 312                         fclose(rom);\r
 313                         return 0;\r
 314                 }\r
 315                 fclose(rom);\r
 316         }\r
 317 \r
 318         // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
 319         if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
 320           ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
 321                 if (rom_data) free(rom_data);\r
 322                 rom_data = 0;\r
 323                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 324                 return 0;\r
 325         }\r
 326 \r
 327         // load config for this ROM (do this before insert to get correct region)\r
 328         ret = emu_ReadConfig(1);\r
 329         if (!ret)\r
 330                 emu_ReadConfig(0);\r
 331 \r
 332         printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
 333         if(PicoCartInsert(rom_data, rom_size)) {\r
 334                 sprintf(menuErrorMsg, "Failed to load ROM.");\r
 335                 return 0;\r
 336         }\r
 337 \r
 338         Pico.m.frame_count = 0;\r
 339 \r
 340         // insert CD if it was detected\r
 341         if (cd_state > 0) {\r
 342                 ret = Insert_CD(romFileName, cd_state == 2);\r
 343                 if (ret != 0) {\r
 344                         sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");\r
 345                         printf("%s\n", menuErrorMsg);\r
 346                         return 0;\r
 347                 }\r
 348         }\r
 349 \r
 350         // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
 351         strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
 352         currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
 353 \r
 354         // additional movie stuff\r
 355         if(movie_data) {\r
 356                 if(movie_data[0x14] == '6')\r
 357                      PicoOpt |=  0x20; // 6 button pad\r
 358                 else PicoOpt &= ~0x20;\r
 359                 PicoOpt |= 0x40; // accurate timing\r
 360                 if(movie_data[0xF] >= 'A') {\r
 361                         if(movie_data[0x16] & 0x80) {\r
 362                                 PicoRegionOverride = 8;\r
 363                         } else {\r
 364                                 PicoRegionOverride = 4;\r
 365                         }\r
 366                         PicoReset(0);\r
 367                         // TODO: bits 6 & 5\r
 368                 }\r
 369                 movie_data[0x18+30] = 0;\r
 370                 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
 371         }\r
 372         else\r
 373         {\r
 374                 if(Pico.m.pal) {\r
 375                         strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
 376                 } else {\r
 377                         strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
 378                 }\r
 379         }\r
 380         gettimeofday(&noticeMsgTime, 0);\r
 381 \r
 382         // load SRAM for this ROM\r
 383         if(currentConfig.EmuOpt & 1)\r
 384                 emu_SaveLoadGame(1, 1);\r
 385 \r
 386         return 1;\r
 387 }\r
 388 \r
 389 \r
 390 void emu_Init(void)\r
 391 {\r
 392         // make temp buffer for alt renderer\r
 393         framebuff = malloc((8+320)*(8+240+8));\r
 394         if (!framebuff)\r
 395         {\r
 396                 printf("framebuff == 0\n");\r
 397         }\r
 398 \r
 399         // make dirs for saves, cfgs, etc.\r
 400         mkdir("mds", 0777);\r
 401         mkdir("srm", 0777);\r
 402         mkdir("brm", 0777);\r
 403         mkdir("cfg", 0777);\r
 404 \r
 405         PicoInit();\r
 406 \r
 407 //      logf = fopen("log.txt", "w");\r
 408 }\r
 409 \r
 410 \r
 411 static void romfname_ext(char *dst, const char *prefix, const char *ext)\r
 412 {\r
 413         char *p;\r
 414         int prefix_len = 0;\r
 415 \r
 416         // make save filename\r
 417         for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
 418         *dst = 0;\r
 419         if (prefix) {\r
 420                 strcpy(dst, prefix);\r
 421                 prefix_len = strlen(prefix);\r
 422         }\r
 423         strncpy(dst + prefix_len, p, 511-prefix_len);\r
 424         dst[511-8] = 0;\r
 425         if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
 426         if (ext) strcat(dst, ext);\r
 427 }\r
 428 \r
 429 \r
 430 static void find_combos(void)\r
 431 {\r
 432         int act, u;\r
 433 \r
 434         // find out which keys and actions are combos\r
 435         combo_keys = combo_acts = 0;\r
 436         for (act = 0; act < 32; act++)\r
 437         {\r
 438                 int keyc = 0;\r
 439                 if (act == 16) continue; // player2 flag\r
 440                 for (u = 0; u < 32; u++)\r
 441                 {\r
 442                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 443                 }\r
 444                 if (keyc > 1)\r
 445                 {\r
 446                         // loop again and mark those keys and actions as combo\r
 447                         for (u = 0; u < 32; u++)\r
 448                         {\r
 449                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 450                                         combo_keys |= 1 << u;\r
 451                                         combo_acts |= 1 << act;\r
 452                                 }\r
 453                         }\r
 454                 }\r
 455         }\r
 456         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 457 }\r
 458 \r
 459 \r
 460 int emu_ReadConfig(int game)\r
 461 {\r
 462         FILE *f;\r
 463         char cfg[512];\r
 464         int bread = 0;\r
 465 \r
 466         if (!game)\r
 467         {\r
 468                 // set default config\r
 469                 memset(&currentConfig, 0, sizeof(currentConfig));\r
 470                 currentConfig.lastRomFile[0] = 0;\r
 471                 currentConfig.EmuOpt  = 0x1f | 0x400; // | cd_leds\r
 472                 currentConfig.PicoOpt = 0x0f | 0xe00; // | use_940 | cd_pcm | cd_cdda\r
 473                 currentConfig.PsndRate = 22050; // 44100;\r
 474                 currentConfig.PicoRegion = 0; // auto\r
 475                 currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 476                 currentConfig.Frameskip = -1; // auto\r
 477                 currentConfig.CPUclock = 200;\r
 478                 currentConfig.volume = 50;\r
 479                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 480                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 481                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 482                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 483                 currentConfig.KeyBinds[14] = 1<<4;\r
 484                 currentConfig.KeyBinds[13] = 1<<5;\r
 485                 currentConfig.KeyBinds[12] = 1<<6;\r
 486                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 487                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 488                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 489                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 490                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 491                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 492                 currentConfig.gamma = 100;\r
 493                 strncpy(cfg, PicoConfigFile, 511);\r
 494                 cfg[511] = 0;\r
 495         } else {\r
 496                 romfname_ext(cfg, "cfg/", ".pbcfg");\r
 497                 f = fopen(cfg, "rb");\r
 498                 if (!f) romfname_ext(cfg, NULL, ".pbcfg");\r
 499                 else fclose(f);\r
 500         }\r
 501 \r
 502         printf("emu_ReadConfig: %s ", cfg);\r
 503         f = fopen(cfg, "rb");\r
 504         if (f) {\r
 505                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 506                 fclose(f);\r
 507         }\r
 508         printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 509 \r
 510         PicoOpt = currentConfig.PicoOpt;\r
 511         PsndRate = currentConfig.PsndRate;\r
 512         PicoRegionOverride = currentConfig.PicoRegion;\r
 513         PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;\r
 514         if (PicoOpt & 0x20) {\r
 515                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 516                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 517         }\r
 518         // some sanity checks\r
 519         if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 520         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 521         // if volume keys are unbound, bind them to volume control\r
 522         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 523                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 524                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 525         }\r
 526 \r
 527         return (bread == sizeof(currentConfig));\r
 528 }\r
 529 \r
 530 \r
 531 int emu_WriteConfig(int game)\r
 532 {\r
 533         FILE *f;\r
 534         char cfg[512];\r
 535         int bwrite = 0;\r
 536 \r
 537         if (!game)\r
 538         {\r
 539                 strncpy(cfg, PicoConfigFile, 511);\r
 540                 cfg[511] = 0;\r
 541         } else {\r
 542                 romfname_ext(cfg, "cfg", ".pbcfg");\r
 543         }\r
 544 \r
 545         printf("emu_WriteConfig: %s ", cfg);\r
 546         f = fopen(cfg, "wb");\r
 547         if (f) {\r
 548                 currentConfig.PicoOpt = PicoOpt;\r
 549                 currentConfig.PsndRate = PsndRate;\r
 550                 currentConfig.PicoRegion = PicoRegionOverride;\r
 551                 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;\r
 552                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 553                 fflush(f);\r
 554                 fclose(f);\r
 555                 sync();\r
 556         }\r
 557         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 558 \r
 559         return (bwrite == sizeof(currentConfig));\r
 560 }\r
 561 \r
 562 \r
 563 void emu_Deinit(void)\r
 564 {\r
 565         // save SRAM\r
 566         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 567                 emu_SaveLoadGame(0, 1);\r
 568                 SRam.changed = 0;\r
 569         }\r
 570 \r
 571         if (!(currentConfig.EmuOpt & 0x20))\r
 572                 emu_WriteConfig(0);\r
 573         free(framebuff);\r
 574 \r
 575         PicoExit();\r
 576 //      fclose(logf);\r
 577 \r
 578         // restore gamma\r
 579         if (gp2x_old_gamma != 100)\r
 580                 set_gamma(100);\r
 581 }\r
 582 \r
 583 \r
 584 void osd_text(int x, int y, const char *text)\r
 585 {\r
 586         int len = strlen(text)*8;\r
 587 \r
 588         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 589                 int *p, i, h;\r
 590                 x &= ~3; // align x\r
 591                 len = (len+3) >> 2;\r
 592                 for (h = 0; h < 8; h++) {\r
 593                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 594                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 595                 }\r
 596                 gp2x_text_out8_2(x, y, text, 0xf0);\r
 597         } else {\r
 598                 int *p, i, h;\r
 599                 x &= ~1; // align x\r
 600                 len = (len+1) >> 1;\r
 601                 for (h = 0; h < 8; h++) {\r
 602                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 603                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 604                 }\r
 605                 gp2x_text_out15(x, y, text);\r
 606         }\r
 607 }\r
 608 \r
 609 static void cd_leds(void)\r
 610 {\r
 611         // mmu problems?\r
 612 //      static\r
 613         int old_reg;\r
 614 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
 615         old_reg = Pico_mcd->s68k_regs[0];\r
 616 \r
 617         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 618                 // 8-bit modes\r
 619                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 620                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 621                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 622                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 623                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 624                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 625                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 626                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 627         } else {\r
 628                 // 16-bit modes\r
 629                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 630                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 631                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 632                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 633                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 634                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 635         }\r
 636 }\r
 637 \r
 638 static int EmuScan16(unsigned int num, void *sdata)\r
 639 {\r
 640         if (!(Pico.video.reg[1]&8)) num += 8;\r
 641         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 642 \r
 643         return 0;\r
 644 }\r
 645 \r
 646 static int EmuScan8(unsigned int num, void *sdata)\r
 647 {\r
 648         if (!(Pico.video.reg[1]&8)) num += 8;\r
 649         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 650 \r
 651         return 0;\r
 652 }\r
 653 \r
 654 int localPal[0x100];\r
 655 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 656 \r
 657 static void blit(const char *fps, const char *notice)\r
 658 {\r
 659         int emu_opt = currentConfig.EmuOpt;\r
 660 \r
 661         if (PicoOpt&0x10) {\r
 662                 // 8bit fast renderer\r
 663                 if (Pico.m.dirtyPal) {\r
 664                         Pico.m.dirtyPal = 0;\r
 665                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 666                         // feed new palette to our device\r
 667                         gp2x_video_setpalette(localPal, 0x40);\r
 668                 }\r
 669                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 670         } else if (!(emu_opt&0x80)) {\r
 671                 // 8bit accurate renderer\r
 672                 if (Pico.m.dirtyPal) {\r
 673                         Pico.m.dirtyPal = 0;\r
 674                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 675                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 676                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 677                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 678                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 679                                 localPal[0xc0] = 0x0000c000;\r
 680                                 localPal[0xd0] = 0x00c00000;\r
 681                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 682                                 localPal[0xf0] = 0x00ffffff;\r
 683                                 gp2x_video_setpalette(localPal, 0x100);\r
 684                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 685                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 686                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 687                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 688                                 gp2x_video_setpalette(localPal, 0xc0);\r
 689                         } else {\r
 690                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 691                                 gp2x_video_setpalette(localPal, 0x40);\r
 692                         }\r
 693                 }\r
 694         }\r
 695 \r
 696         if (notice) osd_text(4, 232, notice);\r
 697         if (emu_opt & 2)\r
 698                 osd_text(osd_fps_x, 232, fps);\r
 699         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 700                 cd_leds();\r
 701 \r
 702         //gp2x_video_wait_vsync();\r
 703         gp2x_video_flip();\r
 704 \r
 705         if (!(PicoOpt&0x10)) {\r
 706                 if (!(Pico.video.reg[1]&8)) {\r
 707                         if (currentConfig.EmuOpt&0x80) {\r
 708                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 709                         } else {\r
 710                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 711                         }\r
 712                 } else {\r
 713                         DrawLineDest = gp2x_screen;\r
 714                 }\r
 715         }\r
 716 }\r
 717 \r
 718 \r
 719 // clears whole screen or just the notice area (in all buffers)\r
 720 static void clearArea(int full)\r
 721 {\r
 722         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 723                 // 8-bit renderers\r
 724                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 725                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 726         } else {\r
 727                 // 16bit accurate renderer\r
 728                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 729                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 730         }\r
 731 }\r
 732 \r
 733 \r
 734 static void vidResetMode(void)\r
 735 {\r
 736         if (PicoOpt&0x10) {\r
 737                 gp2x_video_changemode(8);\r
 738         } else if (currentConfig.EmuOpt&0x80) {\r
 739                 gp2x_video_changemode(15);\r
 740                 PicoDrawSetColorFormat(1);\r
 741                 PicoScan = EmuScan16;\r
 742                 PicoScan(0, 0);\r
 743         } else {\r
 744                 gp2x_video_changemode(8);\r
 745                 PicoDrawSetColorFormat(2);\r
 746                 PicoScan = EmuScan8;\r
 747                 PicoScan(0, 0);\r
 748         }\r
 749         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 750                 // setup pal for 8-bit modes\r
 751                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 752                 localPal[0xd0] = 0x00c00000;\r
 753                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 754                 localPal[0xf0] = 0x00ffffff;\r
 755                 gp2x_video_setpalette(localPal, 0x100);\r
 756                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 757                 gp2x_video_flip();\r
 758         }\r
 759         Pico.m.dirtyPal = 1;\r
 760         // reset scaling\r
 761         gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 762 }\r
 763 \r
 764 \r
 765 static void emu_state_cb(const char *str)\r
 766 {\r
 767         clearArea(0);\r
 768         blit("", str);\r
 769 }\r
 770 \r
 771 static void RunEvents(unsigned int which)\r
 772 {\r
 773         if(which & 0x1800) { // save or load (but not both)\r
 774                 int do_it = 1;\r
 775                 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && emu_check_save_file(state_slot)) {\r
 776                         unsigned long keys;\r
 777                         blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
 778                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 779                                 usleep(50*1024);\r
 780                         if (keys & GP2X_X) do_it = 0;\r
 781                         clearArea(0);\r
 782                 }\r
 783                 if (do_it) {\r
 784                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 785                         PicoStateProgressCB = emu_state_cb;\r
 786                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 787                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 788                         PicoStateProgressCB = NULL;\r
 789                 }\r
 790 \r
 791                 reset_timing = 1;\r
 792         }\r
 793         if(which & 0x0400) { // switch renderer\r
 794                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 795                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 796                 else   currentConfig.EmuOpt &= ~0x80;\r
 797 \r
 798                 vidResetMode();\r
 799 \r
 800                 if (PicoOpt&0x10) {\r
 801                         strcpy(noticeMsg, " 8bit fast renderer");\r
 802                 } else if (currentConfig.EmuOpt&0x80) {\r
 803                         strcpy(noticeMsg, "16bit accurate renderer");\r
 804                 } else {\r
 805                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 806                 }\r
 807 \r
 808                 gettimeofday(&noticeMsgTime, 0);\r
 809         }\r
 810         if(which & 0x0300) {\r
 811                 if(which&0x0200) {\r
 812                         state_slot -= 1;\r
 813                         if(state_slot < 0) state_slot = 9;\r
 814                 } else {\r
 815                         state_slot += 1;\r
 816                         if(state_slot > 9) state_slot = 0;\r
 817                 }\r
 818                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_check_save_file(state_slot) ? "USED" : "FREE");\r
 819                 gettimeofday(&noticeMsgTime, 0);\r
 820         }\r
 821         if(which & 0x0080) {\r
 822                 engineState = PGS_Menu;\r
 823         }\r
 824 }\r
 825 \r
 826 \r
 827 static void updateMovie(void)\r
 828 {\r
 829         int offs = Pico.m.frame_count*3 + 0x40;\r
 830         if (offs+3 > movie_size) {\r
 831                 free(movie_data);\r
 832                 movie_data = 0;\r
 833                 strcpy(noticeMsg, "END OF MOVIE.");\r
 834                 printf("END OF MOVIE.\n");\r
 835                 gettimeofday(&noticeMsgTime, 0);\r
 836         } else {\r
 837                 // MXYZ SACB RLDU\r
 838                 PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 839                 if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 840                 if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 841                 if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 842                 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 843                 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 844                 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 845                 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 846                 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 847                 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 848                 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 849                 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 850                 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 851                 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 852         }\r
 853 }\r
 854 \r
 855 \r
 856 static void updateKeys(void)\r
 857 {\r
 858         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 859         static unsigned long prevEvents = 0;\r
 860         int joy, i;\r
 861 \r
 862         keys = gp2x_joystick_read(0);\r
 863         if (keys & GP2X_SELECT) {\r
 864                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 865                 // wait until select is released, so menu would not resume game\r
 866                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 867         }\r
 868 \r
 869         keys &= CONFIGURABLE_KEYS;\r
 870 \r
 871         for (i = 0; i < 32; i++)\r
 872         {\r
 873                 if (keys & (1 << i)) {\r
 874                         int pl, acts = currentConfig.KeyBinds[i];\r
 875                         if (!acts) continue;\r
 876                         pl = (acts >> 16) & 1;\r
 877                         if (combo_keys & (1 << i)) {\r
 878                                 int u = i+1, acts_c = acts & combo_acts;\r
 879                                 // let's try to find the other one\r
 880                                 if (acts_c)\r
 881                                         for (; u < 32; u++)\r
 882                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 883                                                         allActions[pl] |= acts_c;\r
 884                                                         keys &= ~((1 << i) | (1 << u));\r
 885                                                         break;\r
 886                                                 }\r
 887                                 // add non-combo actions if combo ones were not found\r
 888                                 if (!acts_c || u == 32)\r
 889                                         allActions[pl] |= acts & ~combo_acts;\r
 890                         } else {\r
 891                                 allActions[pl] |= acts;\r
 892                         }\r
 893                 }\r
 894         }\r
 895 \r
 896         // add joy inputs\r
 897         if (num_of_joys > 0)\r
 898         {\r
 899                 gp2x_usbjoy_update();\r
 900                 for (joy = 0; joy < num_of_joys; joy++) {\r
 901                         int keys = gp2x_usbjoy_check2(joy);\r
 902                         for (i = 0; i < 32; i++) {\r
 903                                 if (keys & (1 << i)) {\r
 904                                         int acts = currentConfig.JoyBinds[joy][i];\r
 905                                         int pl = (acts >> 16) & 1;\r
 906                                         allActions[pl] |= acts;\r
 907                                 }\r
 908                         }\r
 909                 }\r
 910         }\r
 911 \r
 912         PicoPad[0] = (unsigned short) allActions[0];\r
 913         PicoPad[1] = (unsigned short) allActions[1];\r
 914 \r
 915         events = (allActions[0] | allActions[1]) >> 16;\r
 916 \r
 917         // volume is treated in special way and triggered every frame\r
 918         if(events & 0x6000) {\r
 919                 int vol = currentConfig.volume;\r
 920                 if (events & 0x2000) {\r
 921                         if (vol < 90) vol++;\r
 922                 } else {\r
 923                         if (vol >  0) vol--;\r
 924                 }\r
 925                 gp2x_sound_volume(vol, vol);\r
 926                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 927                 gettimeofday(&noticeMsgTime, 0);\r
 928                 currentConfig.volume = vol;\r
 929         }\r
 930 \r
 931         events &= ~prevEvents;\r
 932         if (events) RunEvents(events);\r
 933         if (movie_data) updateMovie();\r
 934 \r
 935         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 936 }\r
 937 \r
 938 \r
 939 static void updateSound(int len)\r
 940 {\r
 941         if (PicoOpt&8) len<<=1;\r
 942 \r
 943         gp2x_sound_write(PsndOut, len<<1);\r
 944 }\r
 945 \r
 946 \r
 947 static void SkipFrame(int do_sound)\r
 948 {\r
 949         void *sndbuff_tmp = 0;\r
 950         if (PsndOut && !do_sound) {\r
 951                 sndbuff_tmp = PsndOut;\r
 952                 PsndOut = 0;\r
 953         }\r
 954 \r
 955         PicoSkipFrame=1;\r
 956         PicoFrame();\r
 957         PicoSkipFrame=0;\r
 958 \r
 959         if (sndbuff_tmp && !do_sound) {\r
 960                 PsndOut = sndbuff_tmp;\r
 961         }\r
 962 }\r
 963 \r
 964 \r
 965 void emu_forced_frame(void)\r
 966 {\r
 967         int po_old = PicoOpt;\r
 968 \r
 969         PicoOpt |= 0x10;\r
 970         PicoFrameFull();\r
 971         PicoOpt = po_old;\r
 972 \r
 973         if (!(Pico.video.reg[12]&1)) {\r
 974                 vidCpyM2 = vidCpyM2_32col;\r
 975                 clearArea(1);\r
 976         } else  vidCpyM2 = vidCpyM2_40col;\r
 977 \r
 978         vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 979         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 980         gp2x_video_setpalette(localPal, 0x40);\r
 981 }\r
 982 \r
 983 static void simpleWait(int thissec, int lim_time)\r
 984 {\r
 985         struct timeval tval;\r
 986 \r
 987         spend_cycles(1024);\r
 988         gettimeofday(&tval, 0);\r
 989         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 990 \r
 991         while(tval.tv_usec < lim_time)\r
 992         {\r
 993                 spend_cycles(1024);\r
 994                 gettimeofday(&tval, 0);\r
 995                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 996         }\r
 997 }\r
 998 \r
 999 \r
1000 void emu_Loop(void)\r
1001 {\r
1002         static int gp2x_old_clock = 200;\r
1003         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
1004         char fpsbuff[24]; // fps count c string\r
1005         struct timeval tval; // timing\r
1006         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
1007         int target_fps, target_frametime, lim_time, i;\r
1008         char *notice = 0;\r
1009 \r
1010         printf("entered emu_Loop()\n");\r
1011 \r
1012         if (gp2x_old_clock != currentConfig.CPUclock) {\r
1013                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
1014                 set_FCLK(currentConfig.CPUclock);\r
1015                 gp2x_old_clock = currentConfig.CPUclock;\r
1016                 printf(" done\n");\r
1017         }\r
1018 \r
1019         if (gp2x_old_gamma != currentConfig.gamma) {\r
1020                 set_gamma(currentConfig.gamma);\r
1021                 gp2x_old_gamma = currentConfig.gamma;\r
1022                 printf("updated gamma to %i\n", currentConfig.gamma);\r
1023         }\r
1024 \r
1025         fpsbuff[0] = 0;\r
1026 \r
1027         // make sure we are in correct mode\r
1028         vidResetMode();\r
1029         Pico.m.dirtyPal = 1;\r
1030         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
1031         find_combos();\r
1032 \r
1033         // pal/ntsc might have changed, reset related stuff\r
1034         target_fps = Pico.m.pal ? 50 : 60;\r
1035         target_frametime = 1000000/target_fps;\r
1036         reset_timing = 1;\r
1037 \r
1038         // prepare sound stuff\r
1039         if(currentConfig.EmuOpt & 4) {\r
1040                 int snd_excess_add;\r
1041                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
1042                         /* if 940 is turned off, we need it to be put back to sleep */\r
1043                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
1044                                 Reset940(1, 2);\r
1045                                 Pause940(1);\r
1046                         }\r
1047                         sound_rerate(1);\r
1048                 }\r
1049                 //excess_samples = PsndRate - PsndLen*target_fps;\r
1050                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
1051                 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
1052                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
1053                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
1054                 PicoWriteSound = updateSound;\r
1055                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
1056                 PsndOut = sndBuffer;\r
1057                 PsndRate_old = PsndRate;\r
1058                 PsndLen_real = PsndLen;\r
1059                 PicoOpt_old  = PicoOpt;\r
1060                 pal_old = Pico.m.pal;\r
1061         } else {\r
1062                 PsndOut = 0;\r
1063         }\r
1064 \r
1065         // loop?\r
1066         while (engineState == PGS_Running)\r
1067         {\r
1068                 int modes;\r
1069 \r
1070                 gettimeofday(&tval, 0);\r
1071                 if(reset_timing) {\r
1072                         reset_timing = 0;\r
1073                         thissec = tval.tv_sec;\r
1074                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
1075                 }\r
1076 \r
1077                 // show notice message?\r
1078                 if(noticeMsgTime.tv_sec) {\r
1079                         static int noticeMsgSum;\r
1080                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
1081                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
1082                                 clearArea(0);\r
1083                                 notice = 0;\r
1084                         } else {\r
1085                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
1086                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
1087                                 notice = noticeMsg;\r
1088                         }\r
1089                 }\r
1090 \r
1091                 // check for mode changes\r
1092                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
1093                 if (modes != oldmodes) {\r
1094                         int scalex = 320;\r
1095                         osd_fps_x = OSD_FPS_X;\r
1096                         if (modes & 4) {\r
1097                                 vidCpyM2 = vidCpyM2_40col;\r
1098                         } else {\r
1099                                 if (PicoOpt & 0x100) {\r
1100                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
1101                                         scalex = 256;\r
1102                                         osd_fps_x = OSD_FPS_X - 64;\r
1103                                 } else {\r
1104                                         vidCpyM2 = vidCpyM2_32col;\r
1105                                 }\r
1106                         }\r
1107                         gp2x_video_RGB_setscaling(scalex, 240);\r
1108                         oldmodes = modes;\r
1109                         clearArea(1);\r
1110                 }\r
1111 \r
1112                 // second changed?\r
1113                 if(thissec != tval.tv_sec) {\r
1114 #ifdef BENCHMARK\r
1115                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1116                         if(++bench == 10) {\r
1117                                 bench = 0;\r
1118                                 bench_fps_s = bench_fps;\r
1119                                 bf[bfp++ & 3] = bench_fps;\r
1120                                 bench_fps = 0;\r
1121                         }\r
1122                         bench_fps += frames_shown;\r
1123                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1124 #else\r
1125                         if(currentConfig.EmuOpt & 2)\r
1126                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1127 #endif\r
1128                         thissec = tval.tv_sec;\r
1129 \r
1130                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
1131                                 frames_done = frames_shown = 0;\r
1132                         } else {\r
1133                                 // it is quite common for this implementation to leave 1 fame unfinished\r
1134                                 // when second changes, but we don't want buffer to starve.\r
1135                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
1136                                         updateKeys();\r
1137                                         SkipFrame(1); frames_done++;\r
1138                                 }\r
1139 \r
1140                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
1141                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
1142                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
1143                         }\r
1144                 }\r
1145 \r
1146                 lim_time = (frames_done+1) * target_frametime;\r
1147                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
1148                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
1149                                 updateKeys();\r
1150                                 SkipFrame(1); frames_done++;\r
1151                                 if (PsndOut) { // do framelimitting if sound is enabled\r
1152                                         gettimeofday(&tval, 0);\r
1153                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1154                                         if(tval.tv_usec < lim_time) { // we are too fast\r
1155                                                 simpleWait(thissec, lim_time);\r
1156                                         }\r
1157                                 }\r
1158                                 lim_time += target_frametime;\r
1159                         }\r
1160                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
1161                         // no time left for this frame - skip\r
1162                         updateKeys();\r
1163                         SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
1164                         continue;\r
1165                 }\r
1166 \r
1167                 updateKeys();\r
1168                 PicoFrame();\r
1169 \r
1170 #if 0\r
1171 if (Pico.m.frame_count == 31563) {\r
1172         FILE *f;\r
1173         f = fopen("ram_p.bin", "wb");\r
1174         if (!f) { printf("!f\n"); exit(1); }\r
1175         fwrite(Pico.ram, 1, 0x10000, f);\r
1176         fclose(f);\r
1177         exit(0);\r
1178 }\r
1179 #endif\r
1180 #if 0\r
1181                 // debug\r
1182                 {\r
1183                         #define BYTE unsigned char\r
1184                         #define WORD unsigned short\r
1185                         struct\r
1186                         {\r
1187                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1188                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1189                                 BYTE ImageType;       /* 02h  Image type code */\r
1190                                 WORD CMapStart;       /* 03h  Color map origin */\r
1191                                 WORD CMapLength;      /* 05h  Color map length */\r
1192                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1193                                 WORD XOffset;         /* 08h  X origin of image */\r
1194                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1195                                 WORD Width;           /* 0Ch  Width of image */\r
1196                                 WORD Height;          /* 0Eh  Height of image */\r
1197                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1198                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1199                         } __attribute__((packed)) TGAHEAD;\r
1200                         static unsigned short oldscr[320*240];\r
1201                         FILE *f; char name[128]; int i;\r
1202 \r
1203                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1204                         TGAHEAD.ImageType = 2;\r
1205                         TGAHEAD.Width = 320;\r
1206                         TGAHEAD.Height = 240;\r
1207                         TGAHEAD.PixelDepth = 16;\r
1208                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1209 \r
1210                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1211 \r
1212                         for (i = 0; i < 320*240; i++)\r
1213                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1214                         if (i < 320*240)\r
1215                         {\r
1216                                 for (i = 0; i < 320*240; i++)\r
1217                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1218                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1219                                 f = fopen(name, "wb");\r
1220                                 if (!f) { printf("!f\n"); exit(1); }\r
1221                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1222                                 fwrite(oldscr, 1, 320*240*2, f);\r
1223                                 fclose(f);\r
1224                         }\r
1225                 }\r
1226 #endif\r
1227 \r
1228                 // check time\r
1229                 gettimeofday(&tval, 0);\r
1230                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1231 \r
1232                 // sleep if we are still too fast\r
1233                 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
1234                 {\r
1235                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1236                         gettimeofday(&tval, 0);\r
1237                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1238                         if(tval.tv_usec < lim_time)\r
1239                         {\r
1240                                 // we are too fast\r
1241                                 simpleWait(thissec, lim_time);\r
1242                         }\r
1243                 }\r
1244 \r
1245                 blit(fpsbuff, notice);\r
1246 \r
1247                 frames_done++; frames_shown++;\r
1248         }\r
1249 \r
1250         // save SRAM\r
1251         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1252                 osd_text(4, 232, "Writing SRAM/BRAM..");\r
1253                 emu_SaveLoadGame(0, 1);\r
1254                 SRam.changed = 0;\r
1255         }\r
1256 \r
1257         // if in 16bit mode, generate 8it image for menu background\r
1258         if (!(PicoOpt&0x10) && (currentConfig.EmuOpt&0x80))\r
1259                 emu_forced_frame();\r
1260 \r
1261         // for menu bg\r
1262         gp2x_memcpy_buffers((1<<2), gp2x_screen, 0, 320*240*2);\r
1263 }\r
1264 \r
1265 \r
1266 void emu_ResetGame(void)\r
1267 {\r
1268         PicoReset(0);\r
1269         reset_timing = 1;\r
1270 }\r
1271 \r
1272 \r
1273 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1274 {\r
1275         return gzread(file, p, _n);\r
1276 }\r
1277 \r
1278 \r
1279 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1280 {\r
1281         return gzwrite(file, p, _n);\r
1282 }\r
1283 \r
1284 static int try_ropen_file(const char *fname)\r
1285 {\r
1286         FILE *f;\r
1287 \r
1288         f = fopen(fname, "rb");\r
1289         if (f) {\r
1290                 fclose(f);\r
1291                 return 1;\r
1292         }\r
1293         return 0;\r
1294 }\r
1295 \r
1296 char *emu_GetSaveFName(int load, int is_sram, int slot)\r
1297 {\r
1298         static char saveFname[512];\r
1299         char ext[16];\r
1300 \r
1301         if (is_sram)\r
1302         {\r
1303                 romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");\r
1304                 if (load) {\r
1305                         if (try_ropen_file(saveFname)) return saveFname;\r
1306                         // try in current dir..\r
1307                         romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");\r
1308                         if (try_ropen_file(saveFname)) return saveFname;\r
1309                         return NULL; // give up\r
1310                 }\r
1311         }\r
1312         else\r
1313         {\r
1314                 ext[0] = 0;\r
1315                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1316                 strcat(ext, (currentConfig.EmuOpt & 8) ? ".mds.gz" : ".mds");\r
1317 \r
1318                 romfname_ext(saveFname, "mds/", ext);\r
1319                 if (load) {\r
1320                         if (try_ropen_file(saveFname)) return saveFname;\r
1321                         romfname_ext(saveFname, NULL, ext);\r
1322                         if (try_ropen_file(saveFname)) return saveFname;\r
1323                         if (currentConfig.EmuOpt & 8) {\r
1324                                 ext[0] = 0;\r
1325                                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1326                                 strcat(ext, ".mds");\r
1327 \r
1328                                 romfname_ext(saveFname, "mds/", ext);\r
1329                                 if (try_ropen_file(saveFname)) return saveFname;\r
1330                                 romfname_ext(saveFname, NULL, ext);\r
1331                                 if (try_ropen_file(saveFname)) return saveFname;\r
1332                         }\r
1333                         return NULL;\r
1334                 }\r
1335         }\r
1336 \r
1337         return saveFname;\r
1338 }\r
1339 \r
1340 int emu_check_save_file(int slot)\r
1341 {\r
1342         return emu_GetSaveFName(1, 0, slot) ? 1 : 0;\r
1343 }\r
1344 \r
1345 void emu_set_save_cbs(int gz)\r
1346 {\r
1347         if (gz) {\r
1348                 areaRead  = gzRead2;\r
1349                 areaWrite = gzWrite2;\r
1350                 areaEof   = (areaeof *) gzeof;\r
1351                 areaSeek  = (areaseek *) gzseek;\r
1352                 areaClose = (areaclose *) gzclose;\r
1353         } else {\r
1354                 areaRead  = (arearw *) fread;\r
1355                 areaWrite = (arearw *) fwrite;\r
1356                 areaEof   = (areaeof *) feof;\r
1357                 areaSeek  = (areaseek *) fseek;\r
1358                 areaClose = (areaclose *) fclose;\r
1359         }\r
1360 }\r
1361 \r
1362 int emu_SaveLoadGame(int load, int sram)\r
1363 {\r
1364         int ret = 0;\r
1365         char *saveFname;\r
1366 \r
1367         // make save filename\r
1368         saveFname = emu_GetSaveFName(load, sram, state_slot);\r
1369         if (saveFname == NULL) {\r
1370                 if (!sram) {\r
1371                         strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED  ");\r
1372                         gettimeofday(&noticeMsgTime, 0);\r
1373                 }\r
1374                 return -1;\r
1375         }\r
1376 \r
1377         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1378 \r
1379         if(sram) {\r
1380                 FILE *sramFile;\r
1381                 int sram_size;\r
1382                 unsigned char *sram_data;\r
1383                 if (PicoMCD&1) {\r
1384                         sram_size = 0x2000;\r
1385                         sram_data = Pico_mcd->bram;\r
1386                 } else {\r
1387                         sram_size = SRam.end-SRam.start+1;\r
1388                         if(SRam.reg_back & 4) sram_size=0x2000;\r
1389                         sram_data = SRam.data;\r
1390                 }\r
1391                 if(!sram_data) return 0; // SRam forcefully disabled for this game\r
1392 \r
1393                 if(load) {\r
1394                         sramFile = fopen(saveFname, "rb");\r
1395                         if(!sramFile) return -1;\r
1396                         fread(sram_data, 1, sram_size, sramFile);\r
1397                         fclose(sramFile);\r
1398                 } else {\r
1399                         // sram save needs some special processing\r
1400                         // see if we have anything to save\r
1401                         for(; sram_size > 0; sram_size--)\r
1402                                 if(sram_data[sram_size-1]) break;\r
1403 \r
1404                         if(sram_size) {\r
1405                                 sramFile = fopen(saveFname, "wb");\r
1406                                 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
1407                                 ret = (ret != sram_size) ? -1 : 0;\r
1408                                 fclose(sramFile);\r
1409                                 sync();\r
1410                         }\r
1411                 }\r
1412                 return ret;\r
1413         }\r
1414         else\r
1415         {\r
1416                 void *PmovFile = NULL;\r
1417                 if (strcmp(saveFname + strlen(saveFname) - 3, ".gz") == 0) {\r
1418                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1419                                 emu_set_save_cbs(1);\r
1420                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1421                         }\r
1422                 }\r
1423                 else\r
1424                 {\r
1425                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1426                                 emu_set_save_cbs(0);\r
1427                         }\r
1428                 }\r
1429                 if(PmovFile) {\r
1430                         ret = PmovState(load ? 6 : 5, PmovFile);\r
1431                         areaClose(PmovFile);\r
1432                         PmovFile = 0;\r
1433                         if (!load) sync();\r
1434                         else Pico.m.dirtyPal=1;\r
1435                 }\r
1436                 else    ret = -1;\r
1437                 if (!ret)\r
1438                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1439                 else\r
1440                 {\r
1441                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1442                         ret = -1;\r
1443                 }\r
1444 \r
1445                 gettimeofday(&noticeMsgTime, 0);\r
1446                 return ret;\r
1447         }\r
1448 }\r