gp2x/emu.c

   1 // (c) Copyright 2006 notaz, All rights reserved.\r
   2 // Free for non-commercial use.\r
   3 \r
   4 // For commercial use, separate licencing terms must be obtained.\r
   5 \r
   6 #include <stdio.h>\r
   7 #include <stdlib.h>\r
   8 #include <sys/time.h>\r
   9 #include <sys/stat.h>\r
  10 #include <sys/types.h>\r
  11 #include <linux/limits.h>\r
  12 #include <ctype.h>\r
  13 #include <unistd.h>\r
  14 \r
  15 #include <stdarg.h>\r
  16 \r
  17 #include "emu.h"\r
  18 #include "gp2x.h"\r
  19 #include "usbjoy.h"\r
  20 #include "menu.h"\r
  21 #include "asmutils.h"\r
  22 #include "cpuctrl.h"\r
  23 \r
  24 #include <Pico/PicoInt.h>\r
  25 #include <Pico/Patch.h>\r
  26 #include <zlib/zlib.h>\r
  27 \r
  28 \r
  29 #ifdef BENCHMARK\r
  30 #define OSD_FPS_X 220\r
  31 #else\r
  32 #define OSD_FPS_X 260\r
  33 #endif\r
  34 \r
  35 // PicoPad[] format: SACB RLDU\r
  36 char *actionNames[] = {\r
  37         "UP", "DOWN", "LEFT", "RIGHT", "B", "C", "A", "START",\r
  38         0, 0, 0, 0, 0, 0, 0, 0, // Z, Y, X, MODE (enabled only when needed), ?, ?, ?, ?\r
  39         0, 0, 0, 0, 0, 0, 0, "ENTER MENU", // player2_flag, ?, ?, ?, ?, ?, ?, menu\r
  40         "NEXT SAVE SLOT", "PREV SAVE SLOT", "SWITCH RENDERER", "SAVE STATE",\r
  41         "LOAD STATE", "VOLUME UP", "VOLUME DOWN", "DONE"\r
  42 };\r
  43 \r
  44 int engineState;\r
  45 int select_exits = 0;\r
  46 char *PicoConfigFile = "picoconfig.bin";\r
  47 currentConfig_t currentConfig;\r
  48 \r
  49 char romFileName[PATH_MAX];\r
  50 unsigned char *rom_data = NULL;\r
  51 \r
  52 extern int crashed_940;\r
  53 \r
  54 static short sndBuffer[2*44100/50];\r
  55 static char noticeMsg[64];                                      // notice msg to draw\r
  56 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  57 static int osd_fps_x;\r
  58 static int combo_keys = 0, combo_acts = 0;      // keys and actions which need button combos\r
  59 static int gp2x_old_gamma = 100;\r
  60 static unsigned char *movie_data = NULL;\r
  61 static int movie_size = 0;\r
  62 unsigned char *framebuff = 0;  // temporary buffer for alt renderer\r
  63 int state_slot = 0;\r
  64 int reset_timing = 0;\r
  65 \r
  66 \r
  67 // utilities\r
  68 static void strlwr(char* string)\r
  69 {\r
  70         while ( (*string++ = (char)tolower(*string)) );\r
  71 }\r
  72 \r
  73 static int try_rfn_cut(void)\r
  74 {\r
  75         FILE *tmp;\r
  76         char *p;\r
  77 \r
  78         p = romFileName + strlen(romFileName) - 1;\r
  79         for (; p > romFileName; p--)\r
  80                 if (*p == '.') break;\r
  81         *p = 0;\r
  82 \r
  83         if((tmp = fopen(romFileName, "rb"))) {\r
  84                 fclose(tmp);\r
  85                 return 1;\r
  86         }\r
  87         return 0;\r
  88 }\r
  89 \r
  90 static void get_ext(char *file, char *ext)\r
  91 {\r
  92         char *p;\r
  93 \r
  94         p = file + strlen(file) - 4;\r
  95         if (p < file) p = file;\r
  96         strncpy(ext, p, 4);\r
  97         ext[4] = 0;\r
  98         strlwr(ext);\r
  99 }\r
 100 \r
 101 char *biosfiles_us[] = { "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210" };\r
 102 char *biosfiles_eu[] = { "eu_mcd2_9306", "eu_mcd2_9303",   "eu_mcd1_9210" };\r
 103 char *biosfiles_jp[] = { "jp_mcd1_9112", "jp_mcd1_9111" };\r
 104 \r
 105 extern char **g_argv;\r
 106 \r
 107 int find_bios(int region, char **bios_file)\r
 108 {\r
 109         static char bios_path[1024];\r
 110         int i, j, count;\r
 111         char **files;\r
 112         FILE *f = NULL;\r
 113 \r
 114         if (region == 4) { // US\r
 115                 files = biosfiles_us;\r
 116                 count = sizeof(biosfiles_us) / sizeof(char *);\r
 117         } else if (region == 8) { // EU\r
 118                 files = biosfiles_eu;\r
 119                 count = sizeof(biosfiles_eu) / sizeof(char *);\r
 120         } else if (region == 1 || region == 2) {\r
 121                 files = biosfiles_jp;\r
 122                 count = sizeof(biosfiles_jp) / sizeof(char *);\r
 123         } else {\r
 124                 return 0;\r
 125         }\r
 126 \r
 127         for (i = 0; i < count; i++)\r
 128         {\r
 129                 strncpy(bios_path, g_argv[0], 1023);\r
 130                 bios_path[1024-32] = 0;\r
 131                 for (j = strlen(bios_path); j > 0; j--)\r
 132                         if (bios_path[j] == '/') { bios_path[j+1] = 0; break; }\r
 133                 strcat(bios_path, files[i]);\r
 134                 strcat(bios_path, ".bin");\r
 135                 f = fopen(bios_path, "rb");\r
 136                 if (f) break;\r
 137 \r
 138                 bios_path[strlen(bios_path) - 4] = 0;\r
 139                 strcat(bios_path, ".zip");\r
 140                 f = fopen(bios_path, "rb");\r
 141                 if (f) break;\r
 142         }\r
 143 \r
 144         if (f) {\r
 145                 printf("using bios: %s\n", bios_path);\r
 146                 fclose(f);\r
 147                 if (bios_file) *bios_file = bios_path;\r
 148                 return 1;\r
 149         } else {\r
 150                 sprintf(menuErrorMsg, "no %s BIOS files found, read docs",\r
 151                         region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 152                 printf("%s\n", menuErrorMsg);\r
 153                 return 0;\r
 154         }\r
 155 }\r
 156 \r
 157 /* checks if romFileName points to valid MegaCD image\r
 158  * if so, checks for suitable BIOS */\r
 159 int emu_cd_check(char **bios_file)\r
 160 {\r
 161         unsigned char buf[32];\r
 162         pm_file *cd_f;\r
 163         int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe\r
 164 \r
 165         cd_f = pm_open(romFileName);\r
 166         if (!cd_f) return 0; // let the upper level handle this\r
 167 \r
 168         if (pm_read(buf, 32, cd_f) != 32) {\r
 169                 pm_close(cd_f);\r
 170                 return 0;\r
 171         }\r
 172 \r
 173         if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1;       // Sega CD (ISO)\r
 174         if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2;       // Sega CD (BIN)\r
 175         if (type == 0) {\r
 176                 pm_close(cd_f);\r
 177                 return 0;\r
 178         }\r
 179 \r
 180         /* it seems we have a CD image here. Try to detect region now.. */\r
 181         pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);\r
 182         pm_read(buf, 1, cd_f);\r
 183         pm_close(cd_f);\r
 184 \r
 185         if (buf[0] == 0x64) region = 8; // EU\r
 186         if (buf[0] == 0xa1) region = 1; // JAP\r
 187 \r
 188         printf("detected %s Sega/Mega CD image with %s region\n",\r
 189                 type == 2 ? "BIN" : "ISO", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 190 \r
 191         if (PicoRegionOverride) {\r
 192                 region = PicoRegionOverride;\r
 193                 printf("overrided region to %s\n", region != 4 ? (region == 8 ? "EU" : "JAP") : "USA");\r
 194         }\r
 195 \r
 196         if (bios_file == NULL) return type;\r
 197 \r
 198         if (find_bios(region, bios_file))\r
 199                  return type;   // CD and BIOS detected\r
 200 \r
 201         return -1;              // CD detected but load failed\r
 202 }\r
 203 \r
 204 int emu_ReloadRom(void)\r
 205 {\r
 206         unsigned int rom_size = 0;\r
 207         char *used_rom_name = romFileName;\r
 208         char ext[5];\r
 209         pm_file *rom;\r
 210         int ret, cd_state;\r
 211 \r
 212         printf("emu_ReloadRom(%s)\n", romFileName);\r
 213 \r
 214         get_ext(romFileName, ext);\r
 215 \r
 216         // detect wrong extensions\r
 217         if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
 218                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 219                 return 0;\r
 220         }\r
 221 \r
 222         PicoPatchUnload();\r
 223 \r
 224         // check for movie file\r
 225         if(movie_data) {\r
 226                 free(movie_data);\r
 227                 movie_data = 0;\r
 228         }\r
 229         if(!strcmp(ext, ".gmv")) {\r
 230                 // check for both gmv and rom\r
 231                 int dummy;\r
 232                 FILE *movie_file = fopen(romFileName, "rb");\r
 233                 if(!movie_file) {\r
 234                         sprintf(menuErrorMsg, "Failed to open movie.");\r
 235                         return 0;\r
 236                 }\r
 237                 fseek(movie_file, 0, SEEK_END);\r
 238                 movie_size = ftell(movie_file);\r
 239                 fseek(movie_file, 0, SEEK_SET);\r
 240                 if(movie_size < 64+3) {\r
 241                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 242                         fclose(movie_file);\r
 243                         return 0;\r
 244                 }\r
 245                 movie_data = malloc(movie_size);\r
 246                 if(movie_data == NULL) {\r
 247                         sprintf(menuErrorMsg, "low memory.");\r
 248                         fclose(movie_file);\r
 249                         return 0;\r
 250                 }\r
 251                 fread(movie_data, 1, movie_size, movie_file);\r
 252                 fclose(movie_file);\r
 253                 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
 254                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 255                         return 0;\r
 256                 }\r
 257                 dummy = try_rfn_cut() || try_rfn_cut();\r
 258                 if (!dummy) {\r
 259                         sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
 260                         return 0;\r
 261                 }\r
 262                 get_ext(romFileName, ext);\r
 263         }\r
 264         else if (!strcmp(ext, ".pat")) {\r
 265                 int dummy;\r
 266                 PicoPatchLoad(romFileName);\r
 267                 dummy = try_rfn_cut() || try_rfn_cut();\r
 268                 if (!dummy) {\r
 269                         sprintf(menuErrorMsg, "Could't find a ROM to patch.");\r
 270                         return 0;\r
 271                 }\r
 272                 get_ext(romFileName, ext);\r
 273         }\r
 274 \r
 275         // check for MegaCD image\r
 276         cd_state = emu_cd_check(&used_rom_name);\r
 277         if (cd_state > 0) {\r
 278                 PicoMCD |= 1;\r
 279                 get_ext(used_rom_name, ext);\r
 280         } else if (cd_state == -1) {\r
 281                 // bios_help() ?\r
 282                 return 0;\r
 283         } else {\r
 284                 if (PicoMCD & 1) PicoExitMCD();\r
 285                 PicoMCD &= ~1;\r
 286         }\r
 287 \r
 288         rom = pm_open(used_rom_name);\r
 289         if(!rom) {\r
 290                 sprintf(menuErrorMsg, "Failed to open rom.");\r
 291                 return 0;\r
 292         }\r
 293 \r
 294         if(rom_data) {\r
 295                 free(rom_data);\r
 296                 rom_data = 0;\r
 297                 rom_size = 0;\r
 298         }\r
 299 \r
 300         if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
 301                 sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
 302                 printf("%s\n", menuErrorMsg);\r
 303                 pm_close(rom);\r
 304                 return 0;\r
 305         }\r
 306         pm_close(rom);\r
 307 \r
 308         // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
 309         if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
 310           ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
 311                 if (rom_data) free(rom_data);\r
 312                 rom_data = 0;\r
 313                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 314                 return 0;\r
 315         }\r
 316 \r
 317         // load config for this ROM (do this before insert to get correct region)\r
 318         ret = emu_ReadConfig(1);\r
 319         if (!ret)\r
 320                 emu_ReadConfig(0);\r
 321 \r
 322         printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
 323         if(PicoCartInsert(rom_data, rom_size)) {\r
 324                 sprintf(menuErrorMsg, "Failed to load ROM.");\r
 325                 return 0;\r
 326         }\r
 327 \r
 328         Pico.m.frame_count = 0;\r
 329 \r
 330         // insert CD if it was detected\r
 331         if (cd_state > 0) {\r
 332                 ret = Insert_CD(romFileName, cd_state == 2);\r
 333                 if (ret != 0) {\r
 334                         sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");\r
 335                         printf("%s\n", menuErrorMsg);\r
 336                         return 0;\r
 337                 }\r
 338         }\r
 339 \r
 340         // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
 341         strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
 342         currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
 343 \r
 344         if (PicoPatches) {\r
 345                 PicoPatchPrepare();\r
 346                 PicoPatchApply();\r
 347         }\r
 348 \r
 349         // additional movie stuff\r
 350         if(movie_data) {\r
 351                 if(movie_data[0x14] == '6')\r
 352                      PicoOpt |=  0x20; // 6 button pad\r
 353                 else PicoOpt &= ~0x20;\r
 354                 PicoOpt |= 0x40; // accurate timing\r
 355                 if(movie_data[0xF] >= 'A') {\r
 356                         if(movie_data[0x16] & 0x80) {\r
 357                                 PicoRegionOverride = 8;\r
 358                         } else {\r
 359                                 PicoRegionOverride = 4;\r
 360                         }\r
 361                         PicoReset(0);\r
 362                         // TODO: bits 6 & 5\r
 363                 }\r
 364                 movie_data[0x18+30] = 0;\r
 365                 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
 366         }\r
 367         else\r
 368         {\r
 369                 if(Pico.m.pal) {\r
 370                         strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
 371                 } else {\r
 372                         strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
 373                 }\r
 374         }\r
 375         gettimeofday(&noticeMsgTime, 0);\r
 376 \r
 377         // load SRAM for this ROM\r
 378         if(currentConfig.EmuOpt & 1)\r
 379                 emu_SaveLoadGame(1, 1);\r
 380 \r
 381         return 1;\r
 382 }\r
 383 \r
 384 \r
 385 static void emu_msg_cb(const char *msg);\r
 386 static void emu_msg_tray_open(void);\r
 387 \r
 388 void emu_Init(void)\r
 389 {\r
 390         // make temp buffer for alt renderer\r
 391         framebuff = malloc((8+320)*(8+240+8));\r
 392         if (!framebuff)\r
 393         {\r
 394                 printf("framebuff == 0\n");\r
 395         }\r
 396 \r
 397         // make dirs for saves, cfgs, etc.\r
 398         mkdir("mds", 0777);\r
 399         mkdir("srm", 0777);\r
 400         mkdir("brm", 0777);\r
 401         mkdir("cfg", 0777);\r
 402 \r
 403         PicoInit();\r
 404         PicoMessage = emu_msg_cb;\r
 405         PicoMCDopenTray = emu_msg_tray_open;\r
 406         PicoMCDcloseTray = menu_loop_tray;\r
 407 }\r
 408 \r
 409 \r
 410 static void romfname_ext(char *dst, const char *prefix, const char *ext)\r
 411 {\r
 412         char *p;\r
 413         int prefix_len = 0;\r
 414 \r
 415         // make save filename\r
 416         for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
 417         *dst = 0;\r
 418         if (prefix) {\r
 419                 strcpy(dst, prefix);\r
 420                 prefix_len = strlen(prefix);\r
 421         }\r
 422         strncpy(dst + prefix_len, p, 511-prefix_len);\r
 423         dst[511-8] = 0;\r
 424         if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
 425         if (ext) strcat(dst, ext);\r
 426 }\r
 427 \r
 428 \r
 429 static void find_combos(void)\r
 430 {\r
 431         int act, u;\r
 432 \r
 433         // find out which keys and actions are combos\r
 434         combo_keys = combo_acts = 0;\r
 435         for (act = 0; act < 32; act++)\r
 436         {\r
 437                 int keyc = 0;\r
 438                 if (act == 16) continue; // player2 flag\r
 439                 for (u = 0; u < 32; u++)\r
 440                 {\r
 441                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 442                 }\r
 443                 if (keyc > 1)\r
 444                 {\r
 445                         // loop again and mark those keys and actions as combo\r
 446                         for (u = 0; u < 32; u++)\r
 447                         {\r
 448                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 449                                         combo_keys |= 1 << u;\r
 450                                         combo_acts |= 1 << act;\r
 451                                 }\r
 452                         }\r
 453                 }\r
 454         }\r
 455         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 456 }\r
 457 \r
 458 \r
 459 void scaling_update(void)\r
 460 {\r
 461         PicoOpt &= ~0x4100;\r
 462         switch (currentConfig.scaling) {\r
 463                 default: break; // off\r
 464                 case 1:  // hw hor\r
 465                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 466                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 467         }\r
 468 }\r
 469 \r
 470 \r
 471 int emu_ReadConfig(int game)\r
 472 {\r
 473         FILE *f;\r
 474         char cfg[512];\r
 475         int bread = 0;\r
 476 \r
 477         if (!game)\r
 478         {\r
 479                 // set default config\r
 480                 memset(&currentConfig, 0, sizeof(currentConfig));\r
 481                 currentConfig.lastRomFile[0] = 0;\r
 482                 currentConfig.EmuOpt  = 0x1f | 0x400; // | cd_leds\r
 483                 currentConfig.PicoOpt = 0x0f | 0xe00; // | use_940 | cd_pcm | cd_cdda\r
 484                 currentConfig.PsndRate = 22050; // 44100;\r
 485                 currentConfig.PicoRegion = 0; // auto\r
 486                 currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 487                 currentConfig.Frameskip = -1; // auto\r
 488                 currentConfig.CPUclock = 200;\r
 489                 currentConfig.volume = 50;\r
 490                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 491                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 492                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 493                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 494                 currentConfig.KeyBinds[14] = 1<<4;\r
 495                 currentConfig.KeyBinds[13] = 1<<5;\r
 496                 currentConfig.KeyBinds[12] = 1<<6;\r
 497                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 498                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 499                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 500                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 501                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 502                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 503                 currentConfig.gamma = 100;\r
 504                 currentConfig.PicoCDBuffers = 64;\r
 505                 currentConfig.scaling = 0;\r
 506                 strncpy(cfg, PicoConfigFile, 511);\r
 507                 cfg[511] = 0;\r
 508         } else {\r
 509                 romfname_ext(cfg, "cfg/", ".pbcfg");\r
 510                 f = fopen(cfg, "rb");\r
 511                 if (!f) romfname_ext(cfg, NULL, ".pbcfg");\r
 512                 else fclose(f);\r
 513         }\r
 514 \r
 515         printf("emu_ReadConfig: %s ", cfg);\r
 516         f = fopen(cfg, "rb");\r
 517         if (f) {\r
 518                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 519                 fclose(f);\r
 520         }\r
 521         printf(bread > 0 ? "(ok)\n" : "(failed)\n");\r
 522 \r
 523         PicoOpt = currentConfig.PicoOpt;\r
 524         PsndRate = currentConfig.PsndRate;\r
 525         PicoRegionOverride = currentConfig.PicoRegion;\r
 526         PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;\r
 527         PicoCDBuffers = currentConfig.PicoCDBuffers;\r
 528         if (PicoOpt & 0x20) {\r
 529                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 530                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 531         }\r
 532         scaling_update();\r
 533         // some sanity checks\r
 534         if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 535         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 536         if (currentConfig.volume < 0 || currentConfig.volume > 99) currentConfig.volume = 50;\r
 537         // if volume keys are unbound, bind them to volume control\r
 538         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 539                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 540                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 541         }\r
 542 \r
 543         return (bread > 0); // == sizeof(currentConfig));\r
 544 }\r
 545 \r
 546 \r
 547 int emu_WriteConfig(int game)\r
 548 {\r
 549         FILE *f;\r
 550         char cfg[512];\r
 551         int bwrite = 0;\r
 552 \r
 553         if (!game)\r
 554         {\r
 555                 strncpy(cfg, PicoConfigFile, 511);\r
 556                 cfg[511] = 0;\r
 557         } else {\r
 558                 romfname_ext(cfg, "cfg/", ".pbcfg");\r
 559         }\r
 560 \r
 561         printf("emu_WriteConfig: %s ", cfg);\r
 562         f = fopen(cfg, "wb");\r
 563         if (f) {\r
 564                 currentConfig.PicoOpt = PicoOpt;\r
 565                 currentConfig.PsndRate = PsndRate;\r
 566                 currentConfig.PicoRegion = PicoRegionOverride;\r
 567                 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;\r
 568                 currentConfig.PicoCDBuffers = PicoCDBuffers;\r
 569                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 570                 fflush(f);\r
 571                 fclose(f);\r
 572 #ifndef NO_SYNC\r
 573                 sync();\r
 574 #endif\r
 575         }\r
 576         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 577 \r
 578         return (bwrite == sizeof(currentConfig));\r
 579 }\r
 580 \r
 581 \r
 582 void emu_Deinit(void)\r
 583 {\r
 584         // save SRAM\r
 585         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 586                 emu_SaveLoadGame(0, 1);\r
 587                 SRam.changed = 0;\r
 588         }\r
 589 \r
 590         if (!(currentConfig.EmuOpt & 0x20)) {\r
 591                 FILE *f = fopen(PicoConfigFile, "r+b");\r
 592                 if (!f) emu_WriteConfig(0);\r
 593                 else {\r
 594                         // if we already have config, reload it, except last ROM\r
 595                         fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);\r
 596                         fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);\r
 597                         fseek(f, 0, SEEK_SET);\r
 598                         fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 599                         fflush(f);\r
 600                         fclose(f);\r
 601 #ifndef NO_SYNC\r
 602                         sync();\r
 603 #endif\r
 604                 }\r
 605         }\r
 606 \r
 607         free(framebuff);\r
 608 \r
 609         PicoExit();\r
 610 \r
 611         // restore gamma\r
 612         if (gp2x_old_gamma != 100)\r
 613                 set_gamma(100);\r
 614 }\r
 615 \r
 616 \r
 617 void osd_text(int x, int y, const char *text)\r
 618 {\r
 619         int len = strlen(text)*8;\r
 620 \r
 621         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 622                 int *p, i, h;\r
 623                 x &= ~3; // align x\r
 624                 len = (len+3) >> 2;\r
 625                 for (h = 0; h < 8; h++) {\r
 626                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 627                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 628                 }\r
 629                 gp2x_text_out8_2(x, y, text, 0xf0);\r
 630         } else {\r
 631                 int *p, i, h;\r
 632                 x &= ~1; // align x\r
 633                 len = (len+1) >> 1;\r
 634                 for (h = 0; h < 8; h++) {\r
 635                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 636                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 637                 }\r
 638                 gp2x_text_out15(x, y, text);\r
 639         }\r
 640 }\r
 641 \r
 642 static void cd_leds(void)\r
 643 {\r
 644         // mmu problems?\r
 645 //      static\r
 646         int old_reg;\r
 647 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
 648         old_reg = Pico_mcd->s68k_regs[0];\r
 649 \r
 650         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 651                 // 8-bit modes\r
 652                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 653                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 654                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 655                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 656                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 657                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 658                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 659                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 660         } else {\r
 661                 // 16-bit modes\r
 662                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 663                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 664                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 665                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 666                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 667                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 668         }\r
 669 }\r
 670 \r
 671 static int EmuScan16(unsigned int num, void *sdata)\r
 672 {\r
 673         if (!(Pico.video.reg[1]&8)) num += 8;\r
 674         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 675 \r
 676         return 0;\r
 677 }\r
 678 \r
 679 static int EmuScan8(unsigned int num, void *sdata)\r
 680 {\r
 681         if (!(Pico.video.reg[1]&8)) num += 8;\r
 682         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 683 \r
 684         return 0;\r
 685 }\r
 686 \r
 687 int localPal[0x100];\r
 688 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 689 \r
 690 static void blit(const char *fps, const char *notice)\r
 691 {\r
 692         int emu_opt = currentConfig.EmuOpt;\r
 693 \r
 694         if (PicoOpt&0x10) {\r
 695                 // 8bit fast renderer\r
 696                 if (Pico.m.dirtyPal) {\r
 697                         Pico.m.dirtyPal = 0;\r
 698                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 699                         // feed new palette to our device\r
 700                         gp2x_video_setpalette(localPal, 0x40);\r
 701                 }\r
 702                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 703         } else if (!(emu_opt&0x80)) {\r
 704                 // 8bit accurate renderer\r
 705                 if (Pico.m.dirtyPal) {\r
 706                         Pico.m.dirtyPal = 0;\r
 707                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 708                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 709                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 710                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 711                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 712                                 localPal[0xc0] = 0x0000c000;\r
 713                                 localPal[0xd0] = 0x00c00000;\r
 714                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 715                                 localPal[0xf0] = 0x00ffffff;\r
 716                                 gp2x_video_setpalette(localPal, 0x100);\r
 717                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 718                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 719                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 720                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 721                                 gp2x_video_setpalette(localPal, 0xc0);\r
 722                         } else {\r
 723                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 724                                 gp2x_video_setpalette(localPal, 0x40);\r
 725                         }\r
 726                 }\r
 727         }\r
 728 \r
 729         if (notice || (emu_opt & 2)) {\r
 730                 int h = 232;\r
 731                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
 732                 if (notice) osd_text(4, h, notice);\r
 733                 if (emu_opt & 2)\r
 734                         osd_text(osd_fps_x, h, fps);\r
 735         }\r
 736         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 737                 cd_leds();\r
 738 \r
 739         //gp2x_video_wait_vsync();\r
 740         gp2x_video_flip();\r
 741 \r
 742         if (!(PicoOpt&0x10)) {\r
 743                 if (!(Pico.video.reg[1]&8)) {\r
 744                         if (currentConfig.EmuOpt&0x80) {\r
 745                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 746                         } else {\r
 747                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 748                         }\r
 749                 } else {\r
 750                         DrawLineDest = gp2x_screen;\r
 751                 }\r
 752         }\r
 753 }\r
 754 \r
 755 \r
 756 // clears whole screen or just the notice area (in all buffers)\r
 757 static void clearArea(int full)\r
 758 {\r
 759         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 760                 // 8-bit renderers\r
 761                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 762                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 763         } else {\r
 764                 // 16bit accurate renderer\r
 765                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 766                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 767         }\r
 768 }\r
 769 \r
 770 \r
 771 static void vidResetMode(void)\r
 772 {\r
 773         if (PicoOpt&0x10) {\r
 774                 gp2x_video_changemode(8);\r
 775         } else if (currentConfig.EmuOpt&0x80) {\r
 776                 gp2x_video_changemode(15);\r
 777                 PicoDrawSetColorFormat(1);\r
 778                 PicoScan = EmuScan16;\r
 779                 PicoScan(0, 0);\r
 780         } else {\r
 781                 gp2x_video_changemode(8);\r
 782                 PicoDrawSetColorFormat(2);\r
 783                 PicoScan = EmuScan8;\r
 784                 PicoScan(0, 0);\r
 785         }\r
 786         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 787                 // setup pal for 8-bit modes\r
 788                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 789                 localPal[0xd0] = 0x00c00000;\r
 790                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 791                 localPal[0xf0] = 0x00ffffff;\r
 792                 gp2x_video_setpalette(localPal, 0x100);\r
 793                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 794                 gp2x_video_flip();\r
 795         }\r
 796         Pico.m.dirtyPal = 1;\r
 797         // reset scaling\r
 798         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 799              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 800         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 801 }\r
 802 \r
 803 \r
 804 static void emu_msg_cb(const char *msg)\r
 805 {\r
 806         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 807                 // 8-bit renderers\r
 808                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 809                 osd_text(4, 232, msg);\r
 810                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
 811         } else {\r
 812                 // 16bit accurate renderer\r
 813                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 814                 osd_text(4, 232, msg);\r
 815                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
 816         }\r
 817         gettimeofday(&noticeMsgTime, 0);\r
 818         noticeMsgTime.tv_sec -= 2;\r
 819 \r
 820         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 821         reset_timing = 1;\r
 822 }\r
 823 \r
 824 static void emu_state_cb(const char *str)\r
 825 {\r
 826         clearArea(0);\r
 827         blit("", str);\r
 828 }\r
 829 \r
 830 static void emu_msg_tray_open(void)\r
 831 {\r
 832         strcpy(noticeMsg, "CD tray opened");\r
 833         gettimeofday(&noticeMsgTime, 0);\r
 834 }\r
 835 \r
 836 static void RunEvents(unsigned int which)\r
 837 {\r
 838         if(which & 0x1800) { // save or load (but not both)\r
 839                 int do_it = 1;\r
 840                 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && emu_check_save_file(state_slot)) {\r
 841                         unsigned long keys;\r
 842                         blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
 843                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 844                                 usleep(50*1024);\r
 845                         if (keys & GP2X_X) do_it = 0;\r
 846                         clearArea(0);\r
 847                 }\r
 848                 if (do_it) {\r
 849                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 850                         PicoStateProgressCB = emu_state_cb;\r
 851                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 852                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 853                         PicoStateProgressCB = NULL;\r
 854                 }\r
 855 \r
 856                 reset_timing = 1;\r
 857         }\r
 858         if(which & 0x0400) { // switch renderer\r
 859                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 860                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 861                 else   currentConfig.EmuOpt &= ~0x80;\r
 862 \r
 863                 vidResetMode();\r
 864 \r
 865                 if (PicoOpt&0x10) {\r
 866                         strcpy(noticeMsg, " 8bit fast renderer");\r
 867                 } else if (currentConfig.EmuOpt&0x80) {\r
 868                         strcpy(noticeMsg, "16bit accurate renderer");\r
 869                 } else {\r
 870                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 871                 }\r
 872 \r
 873                 gettimeofday(&noticeMsgTime, 0);\r
 874         }\r
 875         if(which & 0x0300) {\r
 876                 if(which&0x0200) {\r
 877                         state_slot -= 1;\r
 878                         if(state_slot < 0) state_slot = 9;\r
 879                 } else {\r
 880                         state_slot += 1;\r
 881                         if(state_slot > 9) state_slot = 0;\r
 882                 }\r
 883                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_check_save_file(state_slot) ? "USED" : "FREE");\r
 884                 gettimeofday(&noticeMsgTime, 0);\r
 885         }\r
 886         if(which & 0x0080) {\r
 887                 engineState = PGS_Menu;\r
 888         }\r
 889 }\r
 890 \r
 891 \r
 892 static void updateMovie(void)\r
 893 {\r
 894         int offs = Pico.m.frame_count*3 + 0x40;\r
 895         if (offs+3 > movie_size) {\r
 896                 free(movie_data);\r
 897                 movie_data = 0;\r
 898                 strcpy(noticeMsg, "END OF MOVIE.");\r
 899                 printf("END OF MOVIE.\n");\r
 900                 gettimeofday(&noticeMsgTime, 0);\r
 901         } else {\r
 902                 // MXYZ SACB RLDU\r
 903                 PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 904                 if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 905                 if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 906                 if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 907                 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 908                 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 909                 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 910                 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 911                 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 912                 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 913                 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 914                 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 915                 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 916                 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 917         }\r
 918 }\r
 919 \r
 920 \r
 921 static void updateKeys(void)\r
 922 {\r
 923         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 924         static unsigned long prevEvents = 0;\r
 925         int joy, i;\r
 926 \r
 927         keys = gp2x_joystick_read(0);\r
 928         if (keys & GP2X_SELECT) {\r
 929                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 930                 // wait until select is released, so menu would not resume game\r
 931                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 932         }\r
 933 \r
 934         keys &= CONFIGURABLE_KEYS;\r
 935 \r
 936         for (i = 0; i < 32; i++)\r
 937         {\r
 938                 if (keys & (1 << i)) {\r
 939                         int pl, acts = currentConfig.KeyBinds[i];\r
 940                         if (!acts) continue;\r
 941                         pl = (acts >> 16) & 1;\r
 942                         if (combo_keys & (1 << i)) {\r
 943                                 int u = i+1, acts_c = acts & combo_acts;\r
 944                                 // let's try to find the other one\r
 945                                 if (acts_c)\r
 946                                         for (; u < 32; u++)\r
 947                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 948                                                         allActions[pl] |= acts_c;\r
 949                                                         keys &= ~((1 << i) | (1 << u));\r
 950                                                         break;\r
 951                                                 }\r
 952                                 // add non-combo actions if combo ones were not found\r
 953                                 if (!acts_c || u == 32)\r
 954                                         allActions[pl] |= acts & ~combo_acts;\r
 955                         } else {\r
 956                                 allActions[pl] |= acts;\r
 957                         }\r
 958                 }\r
 959         }\r
 960 \r
 961         // add joy inputs\r
 962         if (num_of_joys > 0)\r
 963         {\r
 964                 gp2x_usbjoy_update();\r
 965                 for (joy = 0; joy < num_of_joys; joy++) {\r
 966                         int keys = gp2x_usbjoy_check2(joy);\r
 967                         for (i = 0; i < 32; i++) {\r
 968                                 if (keys & (1 << i)) {\r
 969                                         int acts = currentConfig.JoyBinds[joy][i];\r
 970                                         int pl = (acts >> 16) & 1;\r
 971                                         allActions[pl] |= acts;\r
 972                                 }\r
 973                         }\r
 974                 }\r
 975         }\r
 976 \r
 977         PicoPad[0] = (unsigned short) allActions[0];\r
 978         PicoPad[1] = (unsigned short) allActions[1];\r
 979 \r
 980         events = (allActions[0] | allActions[1]) >> 16;\r
 981 \r
 982         // volume is treated in special way and triggered every frame\r
 983         if(events & 0x6000) {\r
 984                 int vol = currentConfig.volume;\r
 985                 if (events & 0x2000) {\r
 986                         if (vol < 99) vol++;\r
 987                 } else {\r
 988                         if (vol >  0) vol--;\r
 989                 }\r
 990                 gp2x_sound_volume(vol, vol);\r
 991                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 992                 gettimeofday(&noticeMsgTime, 0);\r
 993                 currentConfig.volume = vol;\r
 994         }\r
 995 \r
 996         events &= ~prevEvents;\r
 997         if (events) RunEvents(events);\r
 998         if (movie_data) updateMovie();\r
 999 \r
1000         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
1001 }\r
1002 \r
1003 \r
1004 static void updateSound(int len)\r
1005 {\r
1006         if (PicoOpt&8) len<<=1;\r
1007 \r
1008         /* avoid writing audio when lagging behind to prevent audio lag */\r
1009         if (PicoSkipFrame != 2)\r
1010                 gp2x_sound_write(PsndOut, len<<1);\r
1011 }\r
1012 \r
1013 \r
1014 static void SkipFrame(int do_audio)\r
1015 {\r
1016         PicoSkipFrame=do_audio ? 1 : 2;\r
1017         PicoFrame();\r
1018         PicoSkipFrame=0;\r
1019 }\r
1020 \r
1021 \r
1022 void emu_forced_frame(void)\r
1023 {\r
1024         int po_old = PicoOpt;\r
1025 \r
1026         PicoOpt |= 0x10;\r
1027         PicoFrameFull();\r
1028 \r
1029         if (!(Pico.video.reg[12]&1)) {\r
1030                 vidCpyM2 = vidCpyM2_32col;\r
1031                 clearArea(1);\r
1032         } else  vidCpyM2 = vidCpyM2_40col;\r
1033 \r
1034         vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
1035         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
1036         gp2x_video_setpalette(localPal, 0x40);\r
1037 \r
1038         PicoOpt = po_old;\r
1039 }\r
1040 \r
1041 static void simpleWait(int thissec, int lim_time)\r
1042 {\r
1043         struct timeval tval;\r
1044 \r
1045         spend_cycles(1024);\r
1046         gettimeofday(&tval, 0);\r
1047         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1048 \r
1049         while(tval.tv_usec < lim_time)\r
1050         {\r
1051                 spend_cycles(1024);\r
1052                 gettimeofday(&tval, 0);\r
1053                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1054         }\r
1055 }\r
1056 \r
1057 \r
1058 void emu_Loop(void)\r
1059 {\r
1060         static int gp2x_old_clock = 200;\r
1061         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
1062         char fpsbuff[24]; // fps count c string\r
1063         struct timeval tval; // timing\r
1064         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
1065         int target_fps, target_frametime, lim_time, i;\r
1066         char *notice = 0;\r
1067 \r
1068         printf("entered emu_Loop()\n");\r
1069 \r
1070         if (gp2x_old_clock != currentConfig.CPUclock) {\r
1071                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
1072                 set_FCLK(currentConfig.CPUclock);\r
1073                 gp2x_old_clock = currentConfig.CPUclock;\r
1074                 printf(" done\n");\r
1075         }\r
1076 \r
1077         if (gp2x_old_gamma != currentConfig.gamma) {\r
1078                 set_gamma(currentConfig.gamma);\r
1079                 gp2x_old_gamma = currentConfig.gamma;\r
1080                 printf("updated gamma to %i\n", currentConfig.gamma);\r
1081         }\r
1082 \r
1083         fpsbuff[0] = 0;\r
1084 \r
1085         // make sure we are in correct mode\r
1086         vidResetMode();\r
1087         Pico.m.dirtyPal = 1;\r
1088         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
1089         find_combos();\r
1090 \r
1091         // pal/ntsc might have changed, reset related stuff\r
1092         target_fps = Pico.m.pal ? 50 : 60;\r
1093         target_frametime = 1000000/target_fps;\r
1094         reset_timing = 1;\r
1095 \r
1096         // prepare sound stuff\r
1097         if(currentConfig.EmuOpt & 4) {\r
1098                 int snd_excess_add;\r
1099                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
1100                         /* if 940 is turned off, we need it to be put back to sleep */\r
1101                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
1102                                 Reset940(1, 2);\r
1103                                 Pause940(1);\r
1104                         }\r
1105                         sound_rerate(1);\r
1106                 }\r
1107                 //excess_samples = PsndRate - PsndLen*target_fps;\r
1108                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
1109                 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
1110                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
1111                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
1112                 PicoWriteSound = updateSound;\r
1113                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
1114                 PsndOut = sndBuffer;\r
1115                 PsndRate_old = PsndRate;\r
1116                 PsndLen_real = PsndLen;\r
1117                 PicoOpt_old  = PicoOpt;\r
1118                 pal_old = Pico.m.pal;\r
1119         } else {\r
1120                 PsndOut = 0;\r
1121         }\r
1122 \r
1123         // prepare CD buffer\r
1124         if (PicoMCD & 1) PicoCDBufferInit();\r
1125 \r
1126         // loop?\r
1127         while (engineState == PGS_Running)\r
1128         {\r
1129                 int modes;\r
1130 \r
1131                 gettimeofday(&tval, 0);\r
1132                 if(reset_timing) {\r
1133                         reset_timing = 0;\r
1134                         thissec = tval.tv_sec;\r
1135                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
1136                 }\r
1137 \r
1138                 // show notice message?\r
1139                 if(noticeMsgTime.tv_sec) {\r
1140                         static int noticeMsgSum;\r
1141                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
1142                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
1143                                 clearArea(0);\r
1144                                 notice = 0;\r
1145                         } else {\r
1146                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
1147                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
1148                                 notice = noticeMsg;\r
1149                         }\r
1150                 }\r
1151 \r
1152                 // check for mode changes\r
1153                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
1154                 if (modes != oldmodes) {\r
1155                         int scalex = 320;\r
1156                         osd_fps_x = OSD_FPS_X;\r
1157                         if (modes & 4) {\r
1158                                 vidCpyM2 = vidCpyM2_40col;\r
1159                         } else {\r
1160                                 if (PicoOpt & 0x100) {\r
1161                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
1162                                         scalex = 256;\r
1163                                         osd_fps_x = OSD_FPS_X - 64;\r
1164                                 } else {\r
1165                                         vidCpyM2 = vidCpyM2_32col;\r
1166                                 }\r
1167                         }\r
1168                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
1169                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
1170                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
1171                         oldmodes = modes;\r
1172                         clearArea(1);\r
1173                 }\r
1174 \r
1175                 // second changed?\r
1176                 if(thissec != tval.tv_sec) {\r
1177 #ifdef BENCHMARK\r
1178                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1179                         if(++bench == 10) {\r
1180                                 bench = 0;\r
1181                                 bench_fps_s = bench_fps;\r
1182                                 bf[bfp++ & 3] = bench_fps;\r
1183                                 bench_fps = 0;\r
1184                         }\r
1185                         bench_fps += frames_shown;\r
1186                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1187 #else\r
1188                         if(currentConfig.EmuOpt & 2)\r
1189                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1190 #endif\r
1191                         thissec = tval.tv_sec;\r
1192 \r
1193                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
1194                                 frames_done = frames_shown = 0;\r
1195                         } else {\r
1196                                 // it is quite common for this implementation to leave 1 fame unfinished\r
1197                                 // when second changes, but we don't want buffer to starve.\r
1198                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
1199                                         updateKeys();\r
1200                                         SkipFrame(1); frames_done++;\r
1201                                 }\r
1202 \r
1203                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
1204                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
1205                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
1206                         }\r
1207                 }\r
1208 #if 0\r
1209                 sprintf(fpsbuff, "%05i", Pico.m.frame_count);\r
1210 #endif\r
1211                 lim_time = (frames_done+1) * target_frametime;\r
1212                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
1213                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
1214                                 updateKeys();\r
1215                                 SkipFrame(1); frames_done++;\r
1216                                 if (PsndOut) { // do framelimitting if sound is enabled\r
1217                                         gettimeofday(&tval, 0);\r
1218                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1219                                         if(tval.tv_usec < lim_time) { // we are too fast\r
1220                                                 simpleWait(thissec, lim_time);\r
1221                                         }\r
1222                                 }\r
1223                                 lim_time += target_frametime;\r
1224                         }\r
1225                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
1226                         // no time left for this frame - skip\r
1227                         if (tval.tv_usec - lim_time >= 0x300000) {\r
1228                                 /* something caused a slowdown for us (disk access? cache flush?)\r
1229                                  * try to recover by resetting timing... */\r
1230                                 reset_timing = 1;\r
1231                                 continue;\r
1232                         }\r
1233                         updateKeys();\r
1234                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); frames_done++;\r
1235                         continue;\r
1236                 }\r
1237 \r
1238                 updateKeys();\r
1239                 PicoFrame();\r
1240 \r
1241 #if 0\r
1242 if (Pico.m.frame_count == 31563) {\r
1243         FILE *f;\r
1244         f = fopen("ram_p.bin", "wb");\r
1245         if (!f) { printf("!f\n"); exit(1); }\r
1246         fwrite(Pico.ram, 1, 0x10000, f);\r
1247         fclose(f);\r
1248         exit(0);\r
1249 }\r
1250 #endif\r
1251 #if 0\r
1252                 // debug\r
1253                 {\r
1254                         #define BYTE unsigned char\r
1255                         #define WORD unsigned short\r
1256                         struct\r
1257                         {\r
1258                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1259                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1260                                 BYTE ImageType;       /* 02h  Image type code */\r
1261                                 WORD CMapStart;       /* 03h  Color map origin */\r
1262                                 WORD CMapLength;      /* 05h  Color map length */\r
1263                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1264                                 WORD XOffset;         /* 08h  X origin of image */\r
1265                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1266                                 WORD Width;           /* 0Ch  Width of image */\r
1267                                 WORD Height;          /* 0Eh  Height of image */\r
1268                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1269                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1270                         } __attribute__((packed)) TGAHEAD;\r
1271                         static unsigned short oldscr[320*240];\r
1272                         FILE *f; char name[128]; int i;\r
1273 \r
1274                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1275                         TGAHEAD.ImageType = 2;\r
1276                         TGAHEAD.Width = 320;\r
1277                         TGAHEAD.Height = 240;\r
1278                         TGAHEAD.PixelDepth = 16;\r
1279                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1280 \r
1281                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1282 \r
1283                         for (i = 0; i < 320*240; i++)\r
1284                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1285                         if (i < 320*240)\r
1286                         {\r
1287                                 for (i = 0; i < 320*240; i++)\r
1288                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1289                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1290                                 f = fopen(name, "wb");\r
1291                                 if (!f) { printf("!f\n"); exit(1); }\r
1292                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1293                                 fwrite(oldscr, 1, 320*240*2, f);\r
1294                                 fclose(f);\r
1295                         }\r
1296                 }\r
1297 #endif\r
1298 \r
1299                 // check time\r
1300                 gettimeofday(&tval, 0);\r
1301                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1302 \r
1303                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 0x300000) // slowdown detection\r
1304                         reset_timing = 1;\r
1305                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1306                 {\r
1307                         // sleep if we are still too fast\r
1308                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1309                         if(tval.tv_usec < lim_time)\r
1310                         {\r
1311                                 // we are too fast\r
1312                                 simpleWait(thissec, lim_time);\r
1313                         }\r
1314                 }\r
1315 \r
1316                 blit(fpsbuff, notice);\r
1317 \r
1318                 frames_done++; frames_shown++;\r
1319         }\r
1320 \r
1321 \r
1322         if (PicoMCD & 1) PicoCDBufferFree();\r
1323 \r
1324         // save SRAM\r
1325         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1326                 osd_text(4, 232, "Writing SRAM/BRAM..");\r
1327                 emu_SaveLoadGame(0, 1);\r
1328                 SRam.changed = 0;\r
1329         }\r
1330 \r
1331         // if in 16bit mode, generate 8it image for menu background\r
1332         if (!(PicoOpt&0x10) && (currentConfig.EmuOpt&0x80))\r
1333                 emu_forced_frame();\r
1334 \r
1335         // for menu bg\r
1336         gp2x_memcpy_buffers((1<<2), gp2x_screen, 0, 320*240*2);\r
1337 }\r
1338 \r
1339 \r
1340 void emu_ResetGame(void)\r
1341 {\r
1342         PicoReset(0);\r
1343         reset_timing = 1;\r
1344 }\r
1345 \r
1346 \r
1347 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1348 {\r
1349         return gzread(file, p, _n);\r
1350 }\r
1351 \r
1352 \r
1353 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1354 {\r
1355         return gzwrite(file, p, _n);\r
1356 }\r
1357 \r
1358 static int try_ropen_file(const char *fname)\r
1359 {\r
1360         FILE *f;\r
1361 \r
1362         f = fopen(fname, "rb");\r
1363         if (f) {\r
1364                 fclose(f);\r
1365                 return 1;\r
1366         }\r
1367         return 0;\r
1368 }\r
1369 \r
1370 char *emu_GetSaveFName(int load, int is_sram, int slot)\r
1371 {\r
1372         static char saveFname[512];\r
1373         char ext[16];\r
1374 \r
1375         if (is_sram)\r
1376         {\r
1377                 romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");\r
1378                 if (load) {\r
1379                         if (try_ropen_file(saveFname)) return saveFname;\r
1380                         // try in current dir..\r
1381                         romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");\r
1382                         if (try_ropen_file(saveFname)) return saveFname;\r
1383                         return NULL; // give up\r
1384                 }\r
1385         }\r
1386         else\r
1387         {\r
1388                 ext[0] = 0;\r
1389                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1390                 strcat(ext, (currentConfig.EmuOpt & 8) ? ".mds.gz" : ".mds");\r
1391 \r
1392                 romfname_ext(saveFname, "mds/", ext);\r
1393                 if (load) {\r
1394                         if (try_ropen_file(saveFname)) return saveFname;\r
1395                         romfname_ext(saveFname, NULL, ext);\r
1396                         if (try_ropen_file(saveFname)) return saveFname;\r
1397                         if (currentConfig.EmuOpt & 8) {\r
1398                                 ext[0] = 0;\r
1399                                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1400                                 strcat(ext, ".mds");\r
1401 \r
1402                                 romfname_ext(saveFname, "mds/", ext);\r
1403                                 if (try_ropen_file(saveFname)) return saveFname;\r
1404                                 romfname_ext(saveFname, NULL, ext);\r
1405                                 if (try_ropen_file(saveFname)) return saveFname;\r
1406                         }\r
1407                         return NULL;\r
1408                 }\r
1409         }\r
1410 \r
1411         return saveFname;\r
1412 }\r
1413 \r
1414 int emu_check_save_file(int slot)\r
1415 {\r
1416         return emu_GetSaveFName(1, 0, slot) ? 1 : 0;\r
1417 }\r
1418 \r
1419 void emu_set_save_cbs(int gz)\r
1420 {\r
1421         if (gz) {\r
1422                 areaRead  = gzRead2;\r
1423                 areaWrite = gzWrite2;\r
1424                 areaEof   = (areaeof *) gzeof;\r
1425                 areaSeek  = (areaseek *) gzseek;\r
1426                 areaClose = (areaclose *) gzclose;\r
1427         } else {\r
1428                 areaRead  = (arearw *) fread;\r
1429                 areaWrite = (arearw *) fwrite;\r
1430                 areaEof   = (areaeof *) feof;\r
1431                 areaSeek  = (areaseek *) fseek;\r
1432                 areaClose = (areaclose *) fclose;\r
1433         }\r
1434 }\r
1435 \r
1436 int emu_SaveLoadGame(int load, int sram)\r
1437 {\r
1438         int ret = 0;\r
1439         char *saveFname;\r
1440 \r
1441         // make save filename\r
1442         saveFname = emu_GetSaveFName(load, sram, state_slot);\r
1443         if (saveFname == NULL) {\r
1444                 if (!sram) {\r
1445                         strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED  ");\r
1446                         gettimeofday(&noticeMsgTime, 0);\r
1447                 }\r
1448                 return -1;\r
1449         }\r
1450 \r
1451         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1452 \r
1453         if(sram) {\r
1454                 FILE *sramFile;\r
1455                 int sram_size;\r
1456                 unsigned char *sram_data;\r
1457                 if (PicoMCD&1) {\r
1458                         sram_size = 0x2000;\r
1459                         sram_data = Pico_mcd->bram;\r
1460                 } else {\r
1461                         sram_size = SRam.end-SRam.start+1;\r
1462                         if(SRam.reg_back & 4) sram_size=0x2000;\r
1463                         sram_data = SRam.data;\r
1464                 }\r
1465                 if(!sram_data) return 0; // SRam forcefully disabled for this game\r
1466 \r
1467                 if(load) {\r
1468                         sramFile = fopen(saveFname, "rb");\r
1469                         if(!sramFile) return -1;\r
1470                         fread(sram_data, 1, sram_size, sramFile);\r
1471                         fclose(sramFile);\r
1472                 } else {\r
1473                         // sram save needs some special processing\r
1474                         // see if we have anything to save\r
1475                         for(; sram_size > 0; sram_size--)\r
1476                                 if(sram_data[sram_size-1]) break;\r
1477 \r
1478                         if(sram_size) {\r
1479                                 sramFile = fopen(saveFname, "wb");\r
1480                                 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
1481                                 ret = (ret != sram_size) ? -1 : 0;\r
1482                                 fclose(sramFile);\r
1483 #ifndef NO_SYNC\r
1484                                 sync();\r
1485 #endif\r
1486                         }\r
1487                 }\r
1488                 return ret;\r
1489         }\r
1490         else\r
1491         {\r
1492                 void *PmovFile = NULL;\r
1493                 if (strcmp(saveFname + strlen(saveFname) - 3, ".gz") == 0) {\r
1494                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1495                                 emu_set_save_cbs(1);\r
1496                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1497                         }\r
1498                 }\r
1499                 else\r
1500                 {\r
1501                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1502                                 emu_set_save_cbs(0);\r
1503                         }\r
1504                 }\r
1505                 if(PmovFile) {\r
1506                         ret = PmovState(load ? 6 : 5, PmovFile);\r
1507                         areaClose(PmovFile);\r
1508                         PmovFile = 0;\r
1509                         if (load) Pico.m.dirtyPal=1;\r
1510 #ifndef NO_SYNC\r
1511                         else sync();\r
1512 #endif\r
1513                 }\r
1514                 else    ret = -1;\r
1515                 if (!ret)\r
1516                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1517                 else\r
1518                 {\r
1519                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1520                         ret = -1;\r
1521                 }\r
1522 \r
1523                 gettimeofday(&noticeMsgTime, 0);\r
1524                 return ret;\r
1525         }\r
1526 }\r