gp2x/emu.c

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