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         if ((PicoMCD & 1) && Pico_mcd != NULL)\r
 276                 Stop_CD();\r
 277 \r
 278         // check for MegaCD image\r
 279         cd_state = emu_cd_check(&used_rom_name);\r
 280         if (cd_state > 0) {\r
 281                 PicoMCD |= 1;\r
 282                 get_ext(used_rom_name, ext);\r
 283         } else if (cd_state == -1) {\r
 284                 // bios_help() ?\r
 285                 return 0;\r
 286         } else {\r
 287                 if (PicoMCD & 1) PicoExitMCD();\r
 288                 PicoMCD &= ~1;\r
 289         }\r
 290 \r
 291         rom = pm_open(used_rom_name);\r
 292         if(!rom) {\r
 293                 sprintf(menuErrorMsg, "Failed to open rom.");\r
 294                 return 0;\r
 295         }\r
 296 \r
 297         if(rom_data) {\r
 298                 free(rom_data);\r
 299                 rom_data = 0;\r
 300                 rom_size = 0;\r
 301         }\r
 302 \r
 303         if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
 304                 sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
 305                 printf("%s\n", menuErrorMsg);\r
 306                 pm_close(rom);\r
 307                 return 0;\r
 308         }\r
 309         pm_close(rom);\r
 310 \r
 311         // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
 312         if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
 313           ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
 314                 if (rom_data) free(rom_data);\r
 315                 rom_data = 0;\r
 316                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 317                 return 0;\r
 318         }\r
 319 \r
 320         // load config for this ROM (do this before insert to get correct region)\r
 321         ret = emu_ReadConfig(1);\r
 322         if (!ret)\r
 323                 emu_ReadConfig(0);\r
 324 \r
 325         printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
 326         if(PicoCartInsert(rom_data, rom_size)) {\r
 327                 sprintf(menuErrorMsg, "Failed to load ROM.");\r
 328                 return 0;\r
 329         }\r
 330 \r
 331         Pico.m.frame_count = 0;\r
 332 \r
 333         // insert CD if it was detected\r
 334         if (cd_state > 0) {\r
 335                 ret = Insert_CD(romFileName, cd_state == 2);\r
 336                 if (ret != 0) {\r
 337                         sprintf(menuErrorMsg, "Insert_CD() failed, invalid CD image?");\r
 338                         printf("%s\n", menuErrorMsg);\r
 339                         return 0;\r
 340                 }\r
 341         }\r
 342 \r
 343         // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
 344         strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
 345         currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
 346 \r
 347         if (PicoPatches) {\r
 348                 PicoPatchPrepare();\r
 349                 PicoPatchApply();\r
 350         }\r
 351 \r
 352         // additional movie stuff\r
 353         if(movie_data) {\r
 354                 if(movie_data[0x14] == '6')\r
 355                      PicoOpt |=  0x20; // 6 button pad\r
 356                 else PicoOpt &= ~0x20;\r
 357                 PicoOpt |= 0x40; // accurate timing\r
 358                 if(movie_data[0xF] >= 'A') {\r
 359                         if(movie_data[0x16] & 0x80) {\r
 360                                 PicoRegionOverride = 8;\r
 361                         } else {\r
 362                                 PicoRegionOverride = 4;\r
 363                         }\r
 364                         PicoReset(0);\r
 365                         // TODO: bits 6 & 5\r
 366                 }\r
 367                 movie_data[0x18+30] = 0;\r
 368                 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
 369         }\r
 370         else\r
 371         {\r
 372                 if(Pico.m.pal) {\r
 373                         strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
 374                 } else {\r
 375                         strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
 376                 }\r
 377         }\r
 378         gettimeofday(&noticeMsgTime, 0);\r
 379 \r
 380         // load SRAM for this ROM\r
 381         if(currentConfig.EmuOpt & 1)\r
 382                 emu_SaveLoadGame(1, 1);\r
 383 \r
 384         return 1;\r
 385 }\r
 386 \r
 387 \r
 388 static void emu_msg_cb(const char *msg);\r
 389 static void emu_msg_tray_open(void);\r
 390 \r
 391 void emu_Init(void)\r
 392 {\r
 393         // make temp buffer for alt renderer\r
 394         framebuff = malloc((8+320)*(8+240+8));\r
 395         if (!framebuff)\r
 396         {\r
 397                 printf("framebuff == 0\n");\r
 398         }\r
 399 \r
 400         // make dirs for saves, cfgs, etc.\r
 401         mkdir("mds", 0777);\r
 402         mkdir("srm", 0777);\r
 403         mkdir("brm", 0777);\r
 404         mkdir("cfg", 0777);\r
 405 \r
 406         PicoInit();\r
 407         PicoMessage = emu_msg_cb;\r
 408         PicoMCDopenTray = emu_msg_tray_open;\r
 409         PicoMCDcloseTray = menu_loop_tray;\r
 410 }\r
 411 \r
 412 \r
 413 static void romfname_ext(char *dst, const char *prefix, const char *ext)\r
 414 {\r
 415         char *p;\r
 416         int prefix_len = 0;\r
 417 \r
 418         // make save filename\r
 419         for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
 420         *dst = 0;\r
 421         if (prefix) {\r
 422                 strcpy(dst, prefix);\r
 423                 prefix_len = strlen(prefix);\r
 424         }\r
 425         strncpy(dst + prefix_len, p, 511-prefix_len);\r
 426         dst[511-8] = 0;\r
 427         if (dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
 428         if (ext) strcat(dst, ext);\r
 429 }\r
 430 \r
 431 \r
 432 static void find_combos(void)\r
 433 {\r
 434         int act, u;\r
 435 \r
 436         // find out which keys and actions are combos\r
 437         combo_keys = combo_acts = 0;\r
 438         for (act = 0; act < 32; act++)\r
 439         {\r
 440                 int keyc = 0;\r
 441                 if (act == 16) continue; // player2 flag\r
 442                 for (u = 0; u < 32; u++)\r
 443                 {\r
 444                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 445                 }\r
 446                 if (keyc > 1)\r
 447                 {\r
 448                         // loop again and mark those keys and actions as combo\r
 449                         for (u = 0; u < 32; u++)\r
 450                         {\r
 451                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 452                                         combo_keys |= 1 << u;\r
 453                                         combo_acts |= 1 << act;\r
 454                                 }\r
 455                         }\r
 456                 }\r
 457         }\r
 458         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 459 }\r
 460 \r
 461 \r
 462 void scaling_update(void)\r
 463 {\r
 464         PicoOpt &= ~0x4100;\r
 465         switch (currentConfig.scaling) {\r
 466                 default: break; // off\r
 467                 case 1:  // hw hor\r
 468                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 469                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 470         }\r
 471 }\r
 472 \r
 473 \r
 474 int emu_ReadConfig(int game)\r
 475 {\r
 476         FILE *f;\r
 477         char cfg[512];\r
 478         int bread = 0;\r
 479 \r
 480         if (!game)\r
 481         {\r
 482                 // set default config\r
 483                 memset(&currentConfig, 0, sizeof(currentConfig));\r
 484                 currentConfig.lastRomFile[0] = 0;\r
 485                 currentConfig.EmuOpt  = 0x1f | 0x400; // | cd_leds\r
 486                 currentConfig.PicoOpt = 0x0f | 0xe00; // | use_940 | cd_pcm | cd_cdda\r
 487                 currentConfig.PsndRate = 22050; // 44100;\r
 488                 currentConfig.PicoRegion = 0; // auto\r
 489                 currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 490                 currentConfig.Frameskip = -1; // auto\r
 491                 currentConfig.CPUclock = 200;\r
 492                 currentConfig.volume = 50;\r
 493                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 494                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 495                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 496                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 497                 currentConfig.KeyBinds[14] = 1<<4;\r
 498                 currentConfig.KeyBinds[13] = 1<<5;\r
 499                 currentConfig.KeyBinds[12] = 1<<6;\r
 500                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 501                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 502                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 503                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 504                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 505                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 506                 currentConfig.gamma = 100;\r
 507                 currentConfig.PicoCDBuffers = 64;\r
 508                 currentConfig.scaling = 0;\r
 509                 strncpy(cfg, PicoConfigFile, 511);\r
 510                 cfg[511] = 0;\r
 511         } else {\r
 512                 romfname_ext(cfg, "cfg/", ".pbcfg");\r
 513                 f = fopen(cfg, "rb");\r
 514                 if (!f) romfname_ext(cfg, NULL, ".pbcfg");\r
 515                 else fclose(f);\r
 516         }\r
 517 \r
 518         printf("emu_ReadConfig: %s ", cfg);\r
 519         f = fopen(cfg, "rb");\r
 520         if (f) {\r
 521                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 522                 fclose(f);\r
 523         }\r
 524         printf(bread > 0 ? "(ok)\n" : "(failed)\n");\r
 525 \r
 526         PicoOpt = currentConfig.PicoOpt;\r
 527         PsndRate = currentConfig.PsndRate;\r
 528         PicoRegionOverride = currentConfig.PicoRegion;\r
 529         PicoAutoRgnOrder = currentConfig.PicoAutoRgnOrder;\r
 530         PicoCDBuffers = currentConfig.PicoCDBuffers;\r
 531         if (PicoOpt & 0x20) {\r
 532                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 533                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 534         }\r
 535         scaling_update();\r
 536         // some sanity checks\r
 537         if (currentConfig.CPUclock < 10 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 538         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 539         if (currentConfig.volume < 0 || currentConfig.volume > 99) currentConfig.volume = 50;\r
 540         // if volume keys are unbound, bind them to volume control\r
 541         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 542                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 543                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 544         }\r
 545 \r
 546         return (bread > 0); // == sizeof(currentConfig));\r
 547 }\r
 548 \r
 549 \r
 550 int emu_WriteConfig(int game)\r
 551 {\r
 552         FILE *f;\r
 553         char cfg[512];\r
 554         int bwrite = 0;\r
 555 \r
 556         if (!game)\r
 557         {\r
 558                 strncpy(cfg, PicoConfigFile, 511);\r
 559                 cfg[511] = 0;\r
 560         } else {\r
 561                 romfname_ext(cfg, "cfg/", ".pbcfg");\r
 562         }\r
 563 \r
 564         printf("emu_WriteConfig: %s ", cfg);\r
 565         f = fopen(cfg, "wb");\r
 566         if (f) {\r
 567                 currentConfig.PicoOpt = PicoOpt;\r
 568                 currentConfig.PsndRate = PsndRate;\r
 569                 currentConfig.PicoRegion = PicoRegionOverride;\r
 570                 currentConfig.PicoAutoRgnOrder = PicoAutoRgnOrder;\r
 571                 currentConfig.PicoCDBuffers = PicoCDBuffers;\r
 572                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 573                 fflush(f);\r
 574                 fclose(f);\r
 575 #ifndef NO_SYNC\r
 576                 sync();\r
 577 #endif\r
 578         }\r
 579         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 580 \r
 581         return (bwrite == sizeof(currentConfig));\r
 582 }\r
 583 \r
 584 \r
 585 void emu_Deinit(void)\r
 586 {\r
 587         // save SRAM\r
 588         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 589                 emu_SaveLoadGame(0, 1);\r
 590                 SRam.changed = 0;\r
 591         }\r
 592 \r
 593         if (!(currentConfig.EmuOpt & 0x20)) {\r
 594                 FILE *f = fopen(PicoConfigFile, "r+b");\r
 595                 if (!f) emu_WriteConfig(0);\r
 596                 else {\r
 597                         // if we already have config, reload it, except last ROM\r
 598                         fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);\r
 599                         fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);\r
 600                         fseek(f, 0, SEEK_SET);\r
 601                         fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 602                         fflush(f);\r
 603                         fclose(f);\r
 604 #ifndef NO_SYNC\r
 605                         sync();\r
 606 #endif\r
 607                 }\r
 608         }\r
 609 \r
 610         free(framebuff);\r
 611 \r
 612         PicoExit();\r
 613 \r
 614         // restore gamma\r
 615         if (gp2x_old_gamma != 100)\r
 616                 set_gamma(100);\r
 617 }\r
 618 \r
 619 \r
 620 void osd_text(int x, int y, const char *text)\r
 621 {\r
 622         int len = strlen(text)*8;\r
 623 \r
 624         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 625                 int *p, i, h;\r
 626                 x &= ~3; // align x\r
 627                 len = (len+3) >> 2;\r
 628                 for (h = 0; h < 8; h++) {\r
 629                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 630                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 631                 }\r
 632                 gp2x_text_out8_2(x, y, text, 0xf0);\r
 633         } else {\r
 634                 int *p, i, h;\r
 635                 x &= ~1; // align x\r
 636                 len = (len+1) >> 1;\r
 637                 for (h = 0; h < 8; h++) {\r
 638                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 639                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 640                 }\r
 641                 gp2x_text_out15(x, y, text);\r
 642         }\r
 643 }\r
 644 \r
 645 static void cd_leds(void)\r
 646 {\r
 647         // mmu problems?\r
 648 //      static\r
 649         int old_reg;\r
 650 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
 651         old_reg = Pico_mcd->s68k_regs[0];\r
 652 \r
 653         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 654                 // 8-bit modes\r
 655                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 656                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 657                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 658                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 659                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 660                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 661                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 662                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 663         } else {\r
 664                 // 16-bit modes\r
 665                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 666                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 667                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 668                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 669                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 670                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 671         }\r
 672 }\r
 673 \r
 674 static int EmuScan16(unsigned int num, void *sdata)\r
 675 {\r
 676         if (!(Pico.video.reg[1]&8)) num += 8;\r
 677         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 678 \r
 679         return 0;\r
 680 }\r
 681 \r
 682 static int EmuScan8(unsigned int num, void *sdata)\r
 683 {\r
 684         if (!(Pico.video.reg[1]&8)) num += 8;\r
 685         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 686 \r
 687         return 0;\r
 688 }\r
 689 \r
 690 int localPal[0x100];\r
 691 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 692 \r
 693 static void blit(const char *fps, const char *notice)\r
 694 {\r
 695         int emu_opt = currentConfig.EmuOpt;\r
 696 \r
 697         if (PicoOpt&0x10) {\r
 698                 // 8bit fast renderer\r
 699                 if (Pico.m.dirtyPal) {\r
 700                         Pico.m.dirtyPal = 0;\r
 701                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 702                         // feed new palette to our device\r
 703                         gp2x_video_setpalette(localPal, 0x40);\r
 704                 }\r
 705                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 706         } else if (!(emu_opt&0x80)) {\r
 707                 // 8bit accurate renderer\r
 708                 if (Pico.m.dirtyPal) {\r
 709                         Pico.m.dirtyPal = 0;\r
 710                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 711                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 712                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 713                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 714                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 715                                 localPal[0xc0] = 0x0000c000;\r
 716                                 localPal[0xd0] = 0x00c00000;\r
 717                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 718                                 localPal[0xf0] = 0x00ffffff;\r
 719                                 gp2x_video_setpalette(localPal, 0x100);\r
 720                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 721                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 722                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 723                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 724                                 gp2x_video_setpalette(localPal, 0xc0);\r
 725                         } else {\r
 726                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 727                                 gp2x_video_setpalette(localPal, 0x40);\r
 728                         }\r
 729                 }\r
 730         }\r
 731 \r
 732         if (notice || (emu_opt & 2)) {\r
 733                 int h = 232;\r
 734                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
 735                 if (notice) osd_text(4, h, notice);\r
 736                 if (emu_opt & 2)\r
 737                         osd_text(osd_fps_x, h, fps);\r
 738         }\r
 739         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 740                 cd_leds();\r
 741 \r
 742         //gp2x_video_wait_vsync();\r
 743         gp2x_video_flip();\r
 744 \r
 745         if (!(PicoOpt&0x10)) {\r
 746                 if (!(Pico.video.reg[1]&8)) {\r
 747                         if (currentConfig.EmuOpt&0x80) {\r
 748                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 749                         } else {\r
 750                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 751                         }\r
 752                 } else {\r
 753                         DrawLineDest = gp2x_screen;\r
 754                 }\r
 755         }\r
 756 }\r
 757 \r
 758 \r
 759 // clears whole screen or just the notice area (in all buffers)\r
 760 static void clearArea(int full)\r
 761 {\r
 762         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 763                 // 8-bit renderers\r
 764                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 765                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 766         } else {\r
 767                 // 16bit accurate renderer\r
 768                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 769                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 770         }\r
 771 }\r
 772 \r
 773 \r
 774 static void vidResetMode(void)\r
 775 {\r
 776         if (PicoOpt&0x10) {\r
 777                 gp2x_video_changemode(8);\r
 778         } else if (currentConfig.EmuOpt&0x80) {\r
 779                 gp2x_video_changemode(15);\r
 780                 PicoDrawSetColorFormat(1);\r
 781                 PicoScan = EmuScan16;\r
 782                 PicoScan(0, 0);\r
 783         } else {\r
 784                 gp2x_video_changemode(8);\r
 785                 PicoDrawSetColorFormat(2);\r
 786                 PicoScan = EmuScan8;\r
 787                 PicoScan(0, 0);\r
 788         }\r
 789         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 790                 // setup pal for 8-bit modes\r
 791                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 792                 localPal[0xd0] = 0x00c00000;\r
 793                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 794                 localPal[0xf0] = 0x00ffffff;\r
 795                 gp2x_video_setpalette(localPal, 0x100);\r
 796                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 797                 gp2x_video_flip();\r
 798         }\r
 799         Pico.m.dirtyPal = 1;\r
 800         // reset scaling\r
 801         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 802              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 803         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 804 }\r
 805 \r
 806 \r
 807 static void emu_msg_cb(const char *msg)\r
 808 {\r
 809         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 810                 // 8-bit renderers\r
 811                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 812                 osd_text(4, 232, msg);\r
 813                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
 814         } else {\r
 815                 // 16bit accurate renderer\r
 816                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 817                 osd_text(4, 232, msg);\r
 818                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
 819         }\r
 820         gettimeofday(&noticeMsgTime, 0);\r
 821         noticeMsgTime.tv_sec -= 2;\r
 822 \r
 823         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 824         reset_timing = 1;\r
 825 }\r
 826 \r
 827 static void emu_state_cb(const char *str)\r
 828 {\r
 829         clearArea(0);\r
 830         blit("", str);\r
 831 }\r
 832 \r
 833 static void emu_msg_tray_open(void)\r
 834 {\r
 835         strcpy(noticeMsg, "CD tray opened");\r
 836         gettimeofday(&noticeMsgTime, 0);\r
 837 }\r
 838 \r
 839 static void RunEvents(unsigned int which)\r
 840 {\r
 841         if(which & 0x1800) { // save or load (but not both)\r
 842                 int do_it = 1;\r
 843                 if ( emu_check_save_file(state_slot) &&\r
 844                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 845                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 846                         unsigned long keys;\r
 847                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 848                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 849                                 usleep(50*1024);\r
 850                         if (keys & GP2X_X) do_it = 0;\r
 851                         clearArea(0);\r
 852                 }\r
 853                 if (do_it) {\r
 854                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 855                         PicoStateProgressCB = emu_state_cb;\r
 856                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 857                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 858                         PicoStateProgressCB = NULL;\r
 859                 }\r
 860 \r
 861                 reset_timing = 1;\r
 862         }\r
 863         if(which & 0x0400) { // switch renderer\r
 864                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 865                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 866                 else   currentConfig.EmuOpt &= ~0x80;\r
 867 \r
 868                 vidResetMode();\r
 869 \r
 870                 if (PicoOpt&0x10) {\r
 871                         strcpy(noticeMsg, " 8bit fast renderer");\r
 872                 } else if (currentConfig.EmuOpt&0x80) {\r
 873                         strcpy(noticeMsg, "16bit accurate renderer");\r
 874                 } else {\r
 875                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 876                 }\r
 877 \r
 878                 gettimeofday(&noticeMsgTime, 0);\r
 879         }\r
 880         if(which & 0x0300) {\r
 881                 if(which&0x0200) {\r
 882                         state_slot -= 1;\r
 883                         if(state_slot < 0) state_slot = 9;\r
 884                 } else {\r
 885                         state_slot += 1;\r
 886                         if(state_slot > 9) state_slot = 0;\r
 887                 }\r
 888                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_check_save_file(state_slot) ? "USED" : "FREE");\r
 889                 gettimeofday(&noticeMsgTime, 0);\r
 890         }\r
 891         if(which & 0x0080) {\r
 892                 engineState = PGS_Menu;\r
 893         }\r
 894 }\r
 895 \r
 896 \r
 897 static void updateMovie(void)\r
 898 {\r
 899         int offs = Pico.m.frame_count*3 + 0x40;\r
 900         if (offs+3 > movie_size) {\r
 901                 free(movie_data);\r
 902                 movie_data = 0;\r
 903                 strcpy(noticeMsg, "END OF MOVIE.");\r
 904                 printf("END OF MOVIE.\n");\r
 905                 gettimeofday(&noticeMsgTime, 0);\r
 906         } else {\r
 907                 // MXYZ SACB RLDU\r
 908                 PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 909                 if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 910                 if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 911                 if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 912                 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 913                 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 914                 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 915                 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 916                 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 917                 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 918                 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 919                 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 920                 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 921                 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 922         }\r
 923 }\r
 924 \r
 925 \r
 926 static void updateKeys(void)\r
 927 {\r
 928         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 929         static unsigned long prevEvents = 0;\r
 930         int joy, i;\r
 931 \r
 932         keys = gp2x_joystick_read(0);\r
 933         if (keys & GP2X_SELECT) {\r
 934                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 935                 // wait until select is released, so menu would not resume game\r
 936                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 937         }\r
 938 \r
 939         keys &= CONFIGURABLE_KEYS;\r
 940 \r
 941         for (i = 0; i < 32; i++)\r
 942         {\r
 943                 if (keys & (1 << i)) {\r
 944                         int pl, acts = currentConfig.KeyBinds[i];\r
 945                         if (!acts) continue;\r
 946                         pl = (acts >> 16) & 1;\r
 947                         if (combo_keys & (1 << i)) {\r
 948                                 int u = i+1, acts_c = acts & combo_acts;\r
 949                                 // let's try to find the other one\r
 950                                 if (acts_c)\r
 951                                         for (; u < 32; u++)\r
 952                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 953                                                         allActions[pl] |= acts_c;\r
 954                                                         keys &= ~((1 << i) | (1 << u));\r
 955                                                         break;\r
 956                                                 }\r
 957                                 // add non-combo actions if combo ones were not found\r
 958                                 if (!acts_c || u == 32)\r
 959                                         allActions[pl] |= acts & ~combo_acts;\r
 960                         } else {\r
 961                                 allActions[pl] |= acts;\r
 962                         }\r
 963                 }\r
 964         }\r
 965 \r
 966         // add joy inputs\r
 967         if (num_of_joys > 0)\r
 968         {\r
 969                 gp2x_usbjoy_update();\r
 970                 for (joy = 0; joy < num_of_joys; joy++) {\r
 971                         int keys = gp2x_usbjoy_check2(joy);\r
 972                         for (i = 0; i < 32; i++) {\r
 973                                 if (keys & (1 << i)) {\r
 974                                         int acts = currentConfig.JoyBinds[joy][i];\r
 975                                         int pl = (acts >> 16) & 1;\r
 976                                         allActions[pl] |= acts;\r
 977                                 }\r
 978                         }\r
 979                 }\r
 980         }\r
 981 \r
 982         PicoPad[0] = (unsigned short) allActions[0];\r
 983         PicoPad[1] = (unsigned short) allActions[1];\r
 984 \r
 985         events = (allActions[0] | allActions[1]) >> 16;\r
 986 \r
 987         // volume is treated in special way and triggered every frame\r
 988         if(events & 0x6000) {\r
 989                 int vol = currentConfig.volume;\r
 990                 if (events & 0x2000) {\r
 991                         if (vol < 99) vol++;\r
 992                 } else {\r
 993                         if (vol >  0) vol--;\r
 994                 }\r
 995                 gp2x_sound_volume(vol, vol);\r
 996                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 997                 gettimeofday(&noticeMsgTime, 0);\r
 998                 currentConfig.volume = vol;\r
 999         }\r
1000 \r
1001         events &= ~prevEvents;\r
1002         if (events) RunEvents(events);\r
1003         if (movie_data) updateMovie();\r
1004 \r
1005         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
1006 }\r
1007 \r
1008 \r
1009 static void updateSound(int len)\r
1010 {\r
1011         if (PicoOpt&8) len<<=1;\r
1012 \r
1013         /* avoid writing audio when lagging behind to prevent audio lag */\r
1014         if (PicoSkipFrame != 2)\r
1015                 gp2x_sound_write(PsndOut, len<<1);\r
1016 }\r
1017 \r
1018 \r
1019 static void SkipFrame(int do_audio)\r
1020 {\r
1021         PicoSkipFrame=do_audio ? 1 : 2;\r
1022         PicoFrame();\r
1023         PicoSkipFrame=0;\r
1024 }\r
1025 \r
1026 \r
1027 void emu_forced_frame(void)\r
1028 {\r
1029         int po_old = PicoOpt;\r
1030 \r
1031         PicoOpt |= 0x10;\r
1032         PicoFrameFull();\r
1033 \r
1034         if (!(Pico.video.reg[12]&1)) {\r
1035                 vidCpyM2 = vidCpyM2_32col;\r
1036                 clearArea(1);\r
1037         } else  vidCpyM2 = vidCpyM2_40col;\r
1038 \r
1039         vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
1040         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
1041         gp2x_video_setpalette(localPal, 0x40);\r
1042 \r
1043         PicoOpt = po_old;\r
1044 }\r
1045 \r
1046 static void simpleWait(int thissec, int lim_time)\r
1047 {\r
1048         struct timeval tval;\r
1049 \r
1050         spend_cycles(1024);\r
1051         gettimeofday(&tval, 0);\r
1052         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1053 \r
1054         while(tval.tv_usec < lim_time)\r
1055         {\r
1056                 spend_cycles(1024);\r
1057                 gettimeofday(&tval, 0);\r
1058                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1059         }\r
1060 }\r
1061 \r
1062 \r
1063 void emu_Loop(void)\r
1064 {\r
1065         static int gp2x_old_clock = 200;\r
1066         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
1067         char fpsbuff[24]; // fps count c string\r
1068         struct timeval tval; // timing\r
1069         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
1070         int target_fps, target_frametime, lim_time, i;\r
1071         char *notice = 0;\r
1072 \r
1073         printf("entered emu_Loop()\n");\r
1074 \r
1075         if (gp2x_old_clock != currentConfig.CPUclock) {\r
1076                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
1077                 set_FCLK(currentConfig.CPUclock);\r
1078                 gp2x_old_clock = currentConfig.CPUclock;\r
1079                 printf(" done\n");\r
1080         }\r
1081 \r
1082         if (gp2x_old_gamma != currentConfig.gamma) {\r
1083                 set_gamma(currentConfig.gamma);\r
1084                 gp2x_old_gamma = currentConfig.gamma;\r
1085                 printf("updated gamma to %i\n", currentConfig.gamma);\r
1086         }\r
1087 \r
1088         fpsbuff[0] = 0;\r
1089 \r
1090         // make sure we are in correct mode\r
1091         vidResetMode();\r
1092         Pico.m.dirtyPal = 1;\r
1093         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
1094         find_combos();\r
1095 \r
1096         // pal/ntsc might have changed, reset related stuff\r
1097         target_fps = Pico.m.pal ? 50 : 60;\r
1098         target_frametime = 1000000/target_fps;\r
1099         reset_timing = 1;\r
1100 \r
1101         // prepare sound stuff\r
1102         if(currentConfig.EmuOpt & 4) {\r
1103                 int snd_excess_add;\r
1104                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
1105                         /* if 940 is turned off, we need it to be put back to sleep */\r
1106                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
1107                                 Reset940(1, 2);\r
1108                                 Pause940(1);\r
1109                         }\r
1110                         sound_rerate(1);\r
1111                 }\r
1112                 //excess_samples = PsndRate - PsndLen*target_fps;\r
1113                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
1114                 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
1115                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
1116                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
1117                 PicoWriteSound = updateSound;\r
1118                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
1119                 PsndOut = sndBuffer;\r
1120                 PsndRate_old = PsndRate;\r
1121                 PsndLen_real = PsndLen;\r
1122                 PicoOpt_old  = PicoOpt;\r
1123                 pal_old = Pico.m.pal;\r
1124         } else {\r
1125                 PsndOut = 0;\r
1126         }\r
1127 \r
1128         // prepare CD buffer\r
1129         if (PicoMCD & 1) PicoCDBufferInit();\r
1130 \r
1131         // loop?\r
1132         while (engineState == PGS_Running)\r
1133         {\r
1134                 int modes;\r
1135 \r
1136                 gettimeofday(&tval, 0);\r
1137                 if(reset_timing) {\r
1138                         reset_timing = 0;\r
1139                         thissec = tval.tv_sec;\r
1140                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
1141                 }\r
1142 \r
1143                 // show notice message?\r
1144                 if(noticeMsgTime.tv_sec) {\r
1145                         static int noticeMsgSum;\r
1146                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
1147                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
1148                                 clearArea(0);\r
1149                                 notice = 0;\r
1150                         } else {\r
1151                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
1152                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
1153                                 notice = noticeMsg;\r
1154                         }\r
1155                 }\r
1156 \r
1157                 // check for mode changes\r
1158                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
1159                 if (modes != oldmodes) {\r
1160                         int scalex = 320;\r
1161                         osd_fps_x = OSD_FPS_X;\r
1162                         if (modes & 4) {\r
1163                                 vidCpyM2 = vidCpyM2_40col;\r
1164                         } else {\r
1165                                 if (PicoOpt & 0x100) {\r
1166                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
1167                                         scalex = 256;\r
1168                                         osd_fps_x = OSD_FPS_X - 64;\r
1169                                 } else {\r
1170                                         vidCpyM2 = vidCpyM2_32col;\r
1171                                 }\r
1172                         }\r
1173                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
1174                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
1175                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
1176                         oldmodes = modes;\r
1177                         clearArea(1);\r
1178                 }\r
1179 \r
1180                 // second changed?\r
1181                 if(thissec != tval.tv_sec) {\r
1182 #ifdef BENCHMARK\r
1183                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
1184                         if(++bench == 10) {\r
1185                                 bench = 0;\r
1186                                 bench_fps_s = bench_fps;\r
1187                                 bf[bfp++ & 3] = bench_fps;\r
1188                                 bench_fps = 0;\r
1189                         }\r
1190                         bench_fps += frames_shown;\r
1191                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
1192 #else\r
1193                         if(currentConfig.EmuOpt & 2)\r
1194                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
1195 #endif\r
1196                         thissec = tval.tv_sec;\r
1197 \r
1198                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
1199                                 frames_done = frames_shown = 0;\r
1200                         } else {\r
1201                                 // it is quite common for this implementation to leave 1 fame unfinished\r
1202                                 // when second changes, but we don't want buffer to starve.\r
1203                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
1204                                         updateKeys();\r
1205                                         SkipFrame(1); frames_done++;\r
1206                                 }\r
1207 \r
1208                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
1209                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
1210                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
1211                         }\r
1212                 }\r
1213 #if 0\r
1214                 sprintf(fpsbuff, "%05i", Pico.m.frame_count);\r
1215 #endif\r
1216                 lim_time = (frames_done+1) * target_frametime;\r
1217                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
1218                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
1219                                 updateKeys();\r
1220                                 SkipFrame(1); frames_done++;\r
1221                                 if (PsndOut) { // do framelimitting if sound is enabled\r
1222                                         gettimeofday(&tval, 0);\r
1223                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1224                                         if(tval.tv_usec < lim_time) { // we are too fast\r
1225                                                 simpleWait(thissec, lim_time);\r
1226                                         }\r
1227                                 }\r
1228                                 lim_time += target_frametime;\r
1229                         }\r
1230                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
1231                         // no time left for this frame - skip\r
1232                         if (tval.tv_usec - lim_time >= 0x300000) {\r
1233                                 /* something caused a slowdown for us (disk access? cache flush?)\r
1234                                  * try to recover by resetting timing... */\r
1235                                 reset_timing = 1;\r
1236                                 continue;\r
1237                         }\r
1238                         updateKeys();\r
1239                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); frames_done++;\r
1240                         continue;\r
1241                 }\r
1242 \r
1243                 updateKeys();\r
1244                 PicoFrame();\r
1245 \r
1246 #if 0\r
1247 if (Pico.m.frame_count == 31563) {\r
1248         FILE *f;\r
1249         f = fopen("ram_p.bin", "wb");\r
1250         if (!f) { printf("!f\n"); exit(1); }\r
1251         fwrite(Pico.ram, 1, 0x10000, f);\r
1252         fclose(f);\r
1253         exit(0);\r
1254 }\r
1255 #endif\r
1256 #if 0\r
1257                 // debug\r
1258                 {\r
1259                         #define BYTE unsigned char\r
1260                         #define WORD unsigned short\r
1261                         struct\r
1262                         {\r
1263                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1264                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1265                                 BYTE ImageType;       /* 02h  Image type code */\r
1266                                 WORD CMapStart;       /* 03h  Color map origin */\r
1267                                 WORD CMapLength;      /* 05h  Color map length */\r
1268                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1269                                 WORD XOffset;         /* 08h  X origin of image */\r
1270                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1271                                 WORD Width;           /* 0Ch  Width of image */\r
1272                                 WORD Height;          /* 0Eh  Height of image */\r
1273                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1274                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1275                         } __attribute__((packed)) TGAHEAD;\r
1276                         static unsigned short oldscr[320*240];\r
1277                         FILE *f; char name[128]; int i;\r
1278 \r
1279                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1280                         TGAHEAD.ImageType = 2;\r
1281                         TGAHEAD.Width = 320;\r
1282                         TGAHEAD.Height = 240;\r
1283                         TGAHEAD.PixelDepth = 16;\r
1284                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1285 \r
1286                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1287 \r
1288                         for (i = 0; i < 320*240; i++)\r
1289                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1290                         if (i < 320*240)\r
1291                         {\r
1292                                 for (i = 0; i < 320*240; i++)\r
1293                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1294                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1295                                 f = fopen(name, "wb");\r
1296                                 if (!f) { printf("!f\n"); exit(1); }\r
1297                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1298                                 fwrite(oldscr, 1, 320*240*2, f);\r
1299                                 fclose(f);\r
1300                         }\r
1301                 }\r
1302 #endif\r
1303 \r
1304                 // check time\r
1305                 gettimeofday(&tval, 0);\r
1306                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1307 \r
1308                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 0x300000) // slowdown detection\r
1309                         reset_timing = 1;\r
1310                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1311                 {\r
1312                         // sleep if we are still too fast\r
1313                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1314                         if(tval.tv_usec < lim_time)\r
1315                         {\r
1316                                 // we are too fast\r
1317                                 simpleWait(thissec, lim_time);\r
1318                         }\r
1319                 }\r
1320 \r
1321                 blit(fpsbuff, notice);\r
1322 \r
1323                 frames_done++; frames_shown++;\r
1324         }\r
1325 \r
1326 \r
1327         if (PicoMCD & 1) PicoCDBufferFree();\r
1328 \r
1329         // save SRAM\r
1330         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1331                 osd_text(4, 232, "Writing SRAM/BRAM..");\r
1332                 emu_SaveLoadGame(0, 1);\r
1333                 SRam.changed = 0;\r
1334         }\r
1335 \r
1336         // if in 16bit mode, generate 8it image for menu background\r
1337         if (!(PicoOpt&0x10) && (currentConfig.EmuOpt&0x80))\r
1338                 emu_forced_frame();\r
1339 \r
1340         // for menu bg\r
1341         gp2x_memcpy_buffers((1<<2), gp2x_screen, 0, 320*240*2);\r
1342 }\r
1343 \r
1344 \r
1345 void emu_ResetGame(void)\r
1346 {\r
1347         PicoReset(0);\r
1348         reset_timing = 1;\r
1349 }\r
1350 \r
1351 \r
1352 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1353 {\r
1354         return gzread(file, p, _n);\r
1355 }\r
1356 \r
1357 \r
1358 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1359 {\r
1360         return gzwrite(file, p, _n);\r
1361 }\r
1362 \r
1363 static int try_ropen_file(const char *fname)\r
1364 {\r
1365         FILE *f;\r
1366 \r
1367         f = fopen(fname, "rb");\r
1368         if (f) {\r
1369                 fclose(f);\r
1370                 return 1;\r
1371         }\r
1372         return 0;\r
1373 }\r
1374 \r
1375 char *emu_GetSaveFName(int load, int is_sram, int slot)\r
1376 {\r
1377         static char saveFname[512];\r
1378         char ext[16];\r
1379 \r
1380         if (is_sram)\r
1381         {\r
1382                 romfname_ext(saveFname, (PicoMCD&1) ? "brm/" : "srm/", (PicoMCD&1) ? ".brm" : ".srm");\r
1383                 if (load) {\r
1384                         if (try_ropen_file(saveFname)) return saveFname;\r
1385                         // try in current dir..\r
1386                         romfname_ext(saveFname, NULL, (PicoMCD&1) ? ".brm" : ".srm");\r
1387                         if (try_ropen_file(saveFname)) return saveFname;\r
1388                         return NULL; // give up\r
1389                 }\r
1390         }\r
1391         else\r
1392         {\r
1393                 ext[0] = 0;\r
1394                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1395                 strcat(ext, (currentConfig.EmuOpt & 8) ? ".mds.gz" : ".mds");\r
1396 \r
1397                 romfname_ext(saveFname, "mds/", ext);\r
1398                 if (load) {\r
1399                         if (try_ropen_file(saveFname)) return saveFname;\r
1400                         romfname_ext(saveFname, NULL, ext);\r
1401                         if (try_ropen_file(saveFname)) return saveFname;\r
1402                         if (currentConfig.EmuOpt & 8) {\r
1403                                 ext[0] = 0;\r
1404                                 if(slot > 0 && slot < 10) sprintf(ext, ".%i", slot);\r
1405                                 strcat(ext, ".mds");\r
1406 \r
1407                                 romfname_ext(saveFname, "mds/", ext);\r
1408                                 if (try_ropen_file(saveFname)) return saveFname;\r
1409                                 romfname_ext(saveFname, NULL, ext);\r
1410                                 if (try_ropen_file(saveFname)) return saveFname;\r
1411                         }\r
1412                         return NULL;\r
1413                 }\r
1414         }\r
1415 \r
1416         return saveFname;\r
1417 }\r
1418 \r
1419 int emu_check_save_file(int slot)\r
1420 {\r
1421         return emu_GetSaveFName(1, 0, slot) ? 1 : 0;\r
1422 }\r
1423 \r
1424 void emu_set_save_cbs(int gz)\r
1425 {\r
1426         if (gz) {\r
1427                 areaRead  = gzRead2;\r
1428                 areaWrite = gzWrite2;\r
1429                 areaEof   = (areaeof *) gzeof;\r
1430                 areaSeek  = (areaseek *) gzseek;\r
1431                 areaClose = (areaclose *) gzclose;\r
1432         } else {\r
1433                 areaRead  = (arearw *) fread;\r
1434                 areaWrite = (arearw *) fwrite;\r
1435                 areaEof   = (areaeof *) feof;\r
1436                 areaSeek  = (areaseek *) fseek;\r
1437                 areaClose = (areaclose *) fclose;\r
1438         }\r
1439 }\r
1440 \r
1441 int emu_SaveLoadGame(int load, int sram)\r
1442 {\r
1443         int ret = 0;\r
1444         char *saveFname;\r
1445 \r
1446         // make save filename\r
1447         saveFname = emu_GetSaveFName(load, sram, state_slot);\r
1448         if (saveFname == NULL) {\r
1449                 if (!sram) {\r
1450                         strcpy(noticeMsg, load ? "LOAD FAILED (missing file)" : "SAVE FAILED  ");\r
1451                         gettimeofday(&noticeMsgTime, 0);\r
1452                 }\r
1453                 return -1;\r
1454         }\r
1455 \r
1456         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1457 \r
1458         if(sram) {\r
1459                 FILE *sramFile;\r
1460                 int sram_size;\r
1461                 unsigned char *sram_data;\r
1462                 if (PicoMCD&1) {\r
1463                         sram_size = 0x2000;\r
1464                         sram_data = Pico_mcd->bram;\r
1465                 } else {\r
1466                         sram_size = SRam.end-SRam.start+1;\r
1467                         if(SRam.reg_back & 4) sram_size=0x2000;\r
1468                         sram_data = SRam.data;\r
1469                 }\r
1470                 if(!sram_data) return 0; // SRam forcefully disabled for this game\r
1471 \r
1472                 if(load) {\r
1473                         sramFile = fopen(saveFname, "rb");\r
1474                         if(!sramFile) return -1;\r
1475                         fread(sram_data, 1, sram_size, sramFile);\r
1476                         fclose(sramFile);\r
1477                 } else {\r
1478                         // sram save needs some special processing\r
1479                         // see if we have anything to save\r
1480                         for(; sram_size > 0; sram_size--)\r
1481                                 if(sram_data[sram_size-1]) break;\r
1482 \r
1483                         if(sram_size) {\r
1484                                 sramFile = fopen(saveFname, "wb");\r
1485                                 ret = fwrite(sram_data, 1, sram_size, sramFile);\r
1486                                 ret = (ret != sram_size) ? -1 : 0;\r
1487                                 fclose(sramFile);\r
1488 #ifndef NO_SYNC\r
1489                                 sync();\r
1490 #endif\r
1491                         }\r
1492                 }\r
1493                 return ret;\r
1494         }\r
1495         else\r
1496         {\r
1497                 void *PmovFile = NULL;\r
1498                 if (strcmp(saveFname + strlen(saveFname) - 3, ".gz") == 0) {\r
1499                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1500                                 emu_set_save_cbs(1);\r
1501                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1502                         }\r
1503                 }\r
1504                 else\r
1505                 {\r
1506                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1507                                 emu_set_save_cbs(0);\r
1508                         }\r
1509                 }\r
1510                 if(PmovFile) {\r
1511                         ret = PmovState(load ? 6 : 5, PmovFile);\r
1512                         areaClose(PmovFile);\r
1513                         PmovFile = 0;\r
1514                         if (load) Pico.m.dirtyPal=1;\r
1515 #ifndef NO_SYNC\r
1516                         else sync();\r
1517 #endif\r
1518                 }\r
1519                 else    ret = -1;\r
1520                 if (!ret)\r
1521                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1522                 else\r
1523                 {\r
1524                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1525                         ret = -1;\r
1526                 }\r
1527 \r
1528                 gettimeofday(&noticeMsgTime, 0);\r
1529                 return ret;\r
1530         }\r
1531 }\r