platform/gp2x/emu.c

   1 // (c) Copyright 2006 notaz, All rights reserved.\r
   2 // Free for non-commercial use.\r
   3 \r
   4 // For commercial use, separate licencing terms must be obtained.\r
   5 \r
   6 #include <stdio.h>\r
   7 #include <stdlib.h>\r
   8 #include <sys/time.h>\r
   9 #include <linux/limits.h>\r
  10 #include <ctype.h>\r
  11 #include <unistd.h>\r
  12 \r
  13 #include <stdarg.h>\r
  14 \r
  15 #include "emu.h"\r
  16 #include "gp2x.h"\r
  17 #include "usbjoy.h"\r
  18 #include "menu.h"\r
  19 #include "asmutils.h"\r
  20 #include "cpuctrl.h"\r
  21 \r
  22 #include "Pico/PicoInt.h"\r
  23 #include "zlib/zlib.h"\r
  24 \r
  25 \r
  26 #ifdef BENCHMARK\r
  27 #define OSD_FPS_X 220\r
  28 #else\r
  29 #define OSD_FPS_X 260\r
  30 #endif\r
  31 \r
  32 // PicoPad[] format: SACB RLDU\r
  33 char *actionNames[] = {\r
  34         "UP", "DOWN", "LEFT", "RIGHT", "B", "C", "A", "START",\r
  35         0, 0, 0, 0, 0, 0, 0, 0, // Z, Y, X, MODE (enabled only when needed), ?, ?, ?, ?\r
  36         0, 0, 0, 0, 0, 0, 0, "ENTER MENU", // player2_flag, ?, ?, ?, ?, ?, ?, menu\r
  37         "NEXT SAVE SLOT", "PREV SAVE SLOT", "SWITCH RENDERER", "SAVE STATE",\r
  38         "LOAD STATE", "VOLUME UP", "VOLUME DOWN", "DONE"\r
  39 };\r
  40 \r
  41 int engineState;\r
  42 int select_exits = 0;\r
  43 char *PicoConfigFile = "picoconfig.bin";\r
  44 currentConfig_t currentConfig;\r
  45 \r
  46 char romFileName[PATH_MAX];\r
  47 unsigned char *rom_data = NULL;\r
  48 \r
  49 extern int crashed_940;\r
  50 \r
  51 static char noticeMsg[64];                                      // notice msg to draw\r
  52 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  53 static int reset_timing, osd_fps_x;\r
  54 static int combo_keys = 0, combo_acts = 0;      // keys and actions which need button combos\r
  55 static int gp2x_old_gamma = 100;\r
  56 static unsigned char *movie_data = NULL;\r
  57 static int movie_size = 0;\r
  58 unsigned char *framebuff = 0;  // temporary buffer for alt renderer\r
  59 int state_slot = 0;\r
  60 \r
  61 /*\r
  62 // tmp\r
  63 static FILE *logf = NULL;\r
  64 \r
  65 void pprintf(char *texto, ...)\r
  66 {\r
  67         va_list args;\r
  68 \r
  69         va_start(args,texto);\r
  70         vfprintf(logf,texto,args);\r
  71         va_end(args);\r
  72         fflush(logf);\r
  73         sync();\r
  74 }\r
  75 */\r
  76 // utilities\r
  77 static void strlwr(char* string)\r
  78 {\r
  79         while ( (*string++ = (char)tolower(*string)) );\r
  80 }\r
  81 \r
  82 static int try_rfn_ext(char *ext)\r
  83 {\r
  84         FILE *tmp;\r
  85         char *p;\r
  86 \r
  87         p = romFileName + strlen(romFileName) - 4;\r
  88         if (p < romFileName) p = romFileName;\r
  89         strcpy(p, ext);\r
  90 \r
  91         if((tmp = fopen(romFileName, "rb"))) {\r
  92                 fclose(tmp);\r
  93                 return 1;\r
  94         }\r
  95         return 0;\r
  96 }\r
  97 \r
  98 int emu_ReloadRom(void)\r
  99 {\r
 100         unsigned int rom_size = 0;\r
 101         char ext[5], *p;\r
 102         FILE *rom;\r
 103         int ret;\r
 104 \r
 105         printf("emu_ReloadRom(%s)\n", romFileName);\r
 106 \r
 107         // detect wrong extensions (.srm and .mds)\r
 108         p = romFileName + strlen(romFileName) - 4;\r
 109         if (p < romFileName) p = romFileName;\r
 110         strncpy(ext, p, 4);\r
 111         ext[4] = 0;\r
 112         strlwr(ext);\r
 113 \r
 114         if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
 115                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 116                 return 0;\r
 117         }\r
 118 \r
 119         // check for movie file\r
 120         if(movie_data) {\r
 121                 free(movie_data);\r
 122                 movie_data = 0;\r
 123         }\r
 124         if(!strcmp(ext, ".gmv")) {\r
 125                 // check for both gmv and rom\r
 126                 int dummy;\r
 127                 FILE *movie_file = fopen(romFileName, "rb");\r
 128                 if(!movie_file) {\r
 129                         sprintf(menuErrorMsg, "Failed to open movie.");\r
 130                         return 0;\r
 131                 }\r
 132                 fseek(movie_file, 0, SEEK_END);\r
 133                 movie_size = ftell(movie_file);\r
 134                 fseek(movie_file, 0, SEEK_SET);\r
 135                 if(movie_size < 64+3) {\r
 136                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 137                         fclose(movie_file);\r
 138                         return 0;\r
 139                 }\r
 140                 movie_data = malloc(movie_size);\r
 141                 if(movie_data == NULL) {\r
 142                         sprintf(menuErrorMsg, "low memory.");\r
 143                         fclose(movie_file);\r
 144                         return 0;\r
 145                 }\r
 146                 fread(movie_data, 1, movie_size, movie_file);\r
 147                 fclose(movie_file);\r
 148                 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
 149                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 150                         return 0;\r
 151                 }\r
 152                 dummy = try_rfn_ext(".zip") || try_rfn_ext(".bin") ||\r
 153                         try_rfn_ext(".smd") || try_rfn_ext(".gen");\r
 154                 if (!dummy) {\r
 155                         sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
 156                         return 0;\r
 157                 }\r
 158         }\r
 159 \r
 160         rom = fopen(romFileName, "rb");\r
 161         if(!rom) {\r
 162                 sprintf(menuErrorMsg, "Failed to open rom.");\r
 163                 return 0;\r
 164         }\r
 165 \r
 166         if(rom_data) {\r
 167                 free(rom_data);\r
 168                 rom_data = 0;\r
 169                 rom_size = 0;\r
 170         }\r
 171 \r
 172         // zipfile support\r
 173         if(!strcasecmp(ext, ".zip")) {\r
 174                 fclose(rom);\r
 175                 ret = CartLoadZip(romFileName, &rom_data, &rom_size);\r
 176                 if(ret) {\r
 177                         if (ret == 4) strcpy(menuErrorMsg, "No ROMs in zip found.");\r
 178                         else sprintf(menuErrorMsg, "Unzip failed with code %i", ret);\r
 179                         printf("%s\n", menuErrorMsg);\r
 180                         return 0;\r
 181                 }\r
 182         } else {\r
 183                 if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
 184                         sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
 185                         printf("%s\n", menuErrorMsg);\r
 186                         fclose(rom);\r
 187                         return 0;\r
 188                 }\r
 189                 fclose(rom);\r
 190         }\r
 191 \r
 192         // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
 193         if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
 194           ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
 195                 if (rom_data) free(rom_data);\r
 196                 rom_data = 0;\r
 197                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 198                 return 0;\r
 199         }\r
 200 \r
 201         printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
 202         if(PicoCartInsert(rom_data, rom_size)) {\r
 203                 sprintf(menuErrorMsg, "Failed to load ROM.");\r
 204                 return 0;\r
 205         }\r
 206 \r
 207         // load config for this ROM\r
 208         ret = emu_ReadConfig(1);\r
 209         if (!ret)\r
 210                 emu_ReadConfig(0);\r
 211 \r
 212         // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
 213         strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
 214         currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
 215 \r
 216         // additional movie stuff\r
 217         if(movie_data) {\r
 218                 if(movie_data[0x14] == '6')\r
 219                      PicoOpt |=  0x20; // 6 button pad\r
 220                 else PicoOpt &= ~0x20;\r
 221                 PicoOpt |= 0x40; // accurate timing\r
 222                 if(movie_data[0xF] >= 'A') {\r
 223                         if(movie_data[0x16] & 0x80) {\r
 224                                 PicoRegionOverride = 8;\r
 225                         } else {\r
 226                                 PicoRegionOverride = 4;\r
 227                         }\r
 228                         PicoReset(0);\r
 229                         // TODO: bits 6 & 5\r
 230                 }\r
 231                 movie_data[0x18+30] = 0;\r
 232                 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
 233         }\r
 234         else\r
 235         {\r
 236                 if(Pico.m.pal) {\r
 237                         strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
 238                 } else {\r
 239                         strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
 240                 }\r
 241         }\r
 242         gettimeofday(&noticeMsgTime, 0);\r
 243 \r
 244         // load SRAM for this ROM\r
 245         if(currentConfig.EmuOpt & 1)\r
 246                 emu_SaveLoadGame(1, 1);\r
 247 \r
 248         Pico.m.frame_count = 0;\r
 249 \r
 250         return 1;\r
 251 }\r
 252 \r
 253 \r
 254 void emu_Init(void)\r
 255 {\r
 256         // make temp buffer for alt renderer\r
 257         framebuff = malloc((8+320)*(8+240+8));\r
 258         if (!framebuff)\r
 259         {\r
 260                 printf("framebuff == 0\n");\r
 261         }\r
 262 \r
 263         PicoInit();\r
 264 \r
 265 //      logf = fopen("log.txt", "w");\r
 266 }\r
 267 \r
 268 \r
 269 static void romfname_ext(char *dst, char *ext)\r
 270 {\r
 271         char *p;\r
 272 \r
 273         // make save filename\r
 274         for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
 275         strncpy(dst, p, 511);\r
 276         dst[511-8] = 0;\r
 277         if(dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
 278         strcat(dst, ext);\r
 279 }\r
 280 \r
 281 \r
 282 static void find_combos(void)\r
 283 {\r
 284         int act, u;\r
 285 \r
 286         // find out which keys and actions are combos\r
 287         combo_keys = combo_acts = 0;\r
 288         for (act = 0; act < 32; act++)\r
 289         {\r
 290                 int keyc = 0;\r
 291                 if (act == 16) continue; // player2 flag\r
 292                 for (u = 0; u < 32; u++)\r
 293                 {\r
 294                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 295                 }\r
 296                 if (keyc > 1)\r
 297                 {\r
 298                         // loop again and mark those keys and actions as combo\r
 299                         for (u = 0; u < 32; u++)\r
 300                         {\r
 301                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 302                                         combo_keys |= 1 << u;\r
 303                                         combo_acts |= 1 << act;\r
 304                                 }\r
 305                         }\r
 306                 }\r
 307         }\r
 308         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 309 }\r
 310 \r
 311 \r
 312 int emu_ReadConfig(int game)\r
 313 {\r
 314         FILE *f;\r
 315         char cfg[512];\r
 316         int bread = 0;\r
 317 \r
 318         if (!game)\r
 319         {\r
 320                 // set default config\r
 321                 memset(&currentConfig, 0, sizeof(currentConfig));\r
 322                 currentConfig.lastRomFile[0] = 0;\r
 323                 currentConfig.EmuOpt  = 0x1f;\r
 324                 currentConfig.PicoOpt = 0x0f;\r
 325                 currentConfig.PsndRate = 22050;\r
 326                 currentConfig.PicoRegion = 0; // auto\r
 327                 currentConfig.Frameskip = -1; // auto\r
 328                 currentConfig.CPUclock = 200;\r
 329                 currentConfig.volume = 50;\r
 330                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 331                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 332                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 333                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 334                 currentConfig.KeyBinds[14] = 1<<4;\r
 335                 currentConfig.KeyBinds[13] = 1<<5;\r
 336                 currentConfig.KeyBinds[12] = 1<<6;\r
 337                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 338                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 339                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 340                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 341                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 342                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 343                 currentConfig.gamma = 100;\r
 344                 strncpy(cfg, PicoConfigFile, 511);\r
 345                 cfg[511] = 0;\r
 346         } else {\r
 347                 romfname_ext(cfg, ".pbcfg");\r
 348         }\r
 349 \r
 350         printf("emu_ReadConfig: %s ", cfg);\r
 351         f = fopen(cfg, "rb");\r
 352         if (f) {\r
 353                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 354                 fclose(f);\r
 355         }\r
 356         printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 357 \r
 358         PicoOpt = currentConfig.PicoOpt;\r
 359         PsndRate = currentConfig.PsndRate;\r
 360         PicoRegionOverride = currentConfig.PicoRegion;\r
 361         if (PicoOpt & 0x20) {\r
 362                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 363                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 364         }\r
 365         // some sanity checks\r
 366         if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 367         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 368         // if volume keys are unbound, bind them to volume control\r
 369         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 370                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 371                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 372         }\r
 373 \r
 374         return (bread == sizeof(currentConfig));\r
 375 }\r
 376 \r
 377 \r
 378 int emu_WriteConfig(int game)\r
 379 {\r
 380         FILE *f;\r
 381         char cfg[512];\r
 382         int bwrite = 0;\r
 383 \r
 384         if (!game)\r
 385         {\r
 386                 strncpy(cfg, PicoConfigFile, 511);\r
 387                 cfg[511] = 0;\r
 388         } else {\r
 389                 romfname_ext(cfg, ".pbcfg");\r
 390         }\r
 391 \r
 392         printf("emu_WriteConfig: %s ", cfg);\r
 393         f = fopen(cfg, "wb");\r
 394         if (f) {\r
 395                 currentConfig.PicoOpt = PicoOpt;\r
 396                 currentConfig.PsndRate = PsndRate;\r
 397                 currentConfig.PicoRegion = PicoRegionOverride;\r
 398                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 399                 fflush(f);\r
 400                 fclose(f);\r
 401                 sync();\r
 402         }\r
 403         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 404 \r
 405         return (bwrite == sizeof(currentConfig));\r
 406 }\r
 407 \r
 408 \r
 409 void emu_Deinit(void)\r
 410 {\r
 411         // save SRAM\r
 412         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 413                 emu_SaveLoadGame(0, 1);\r
 414                 SRam.changed = 0;\r
 415         }\r
 416 \r
 417         if (!(currentConfig.EmuOpt & 0x20))\r
 418                 emu_WriteConfig(0);\r
 419         free(framebuff);\r
 420 \r
 421         PicoExit();\r
 422 //      fclose(logf);\r
 423 \r
 424         // restore gamma\r
 425         if (gp2x_old_gamma != 100)\r
 426                 set_gamma(100);\r
 427 }\r
 428 \r
 429 \r
 430 void osd_text(int x, int y, char *text)\r
 431 {\r
 432         int len = strlen(text)*8;\r
 433 \r
 434         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 435                 int *p, i, h, black, white;\r
 436                 if (PicoOpt&0x10) {\r
 437                         black = 0x40404040; white = 0x41;\r
 438                 } else {\r
 439                         black = 0xe0e0e0e0; white = 0xf0;\r
 440                 }\r
 441                 x &= ~3; // align x\r
 442                 len = (len+3) >> 2;\r
 443                 for (h = 0; h < 8; h++) {\r
 444                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 445                         for (i = len; i; i--, p++) *p = black;\r
 446                 }\r
 447                 gp2x_text_out8_2(x, y, text, white);\r
 448         } else {\r
 449                 int *p, i, h;\r
 450                 x &= ~1; // align x\r
 451                 len = (len+1) >> 1;\r
 452                 for (h = 0; h < 8; h++) {\r
 453                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 454                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 455                 }\r
 456                 gp2x_text_out15(x, y, text);\r
 457         }\r
 458 }\r
 459 \r
 460 static int EmuScan16(unsigned int num, void *sdata)\r
 461 {\r
 462         if (!(Pico.video.reg[1]&8)) num += 8;\r
 463         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 464 \r
 465         return 0;\r
 466 }\r
 467 \r
 468 static int EmuScan8(unsigned int num, void *sdata)\r
 469 {\r
 470         if (!(Pico.video.reg[1]&8)) num += 8;\r
 471         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 472 \r
 473         return 0;\r
 474 }\r
 475 \r
 476 static int localPal[0x100];\r
 477 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 478 \r
 479 static void blit(char *fps, char *notice)\r
 480 {\r
 481         if (PicoOpt&0x10) {\r
 482                 // 8bit fast renderer\r
 483                 if (Pico.m.dirtyPal) {\r
 484                         Pico.m.dirtyPal = 0;\r
 485                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 486                         // feed new palette to our device\r
 487                         gp2x_video_setpalette(localPal, 0x40);\r
 488                 }\r
 489                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 490         } else if (!(currentConfig.EmuOpt&0x80)) {\r
 491                 // 8bit accurate renderer\r
 492                 if (Pico.m.dirtyPal) {\r
 493                         Pico.m.dirtyPal = 0;\r
 494                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 495                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 496                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 497                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 498                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 499                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 500                                 localPal[0xf0] = 0x00ffffff;\r
 501                                 gp2x_video_setpalette(localPal, 0x100);\r
 502                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 503                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 504                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 505                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 506                                 gp2x_video_setpalette(localPal, 0xc0);\r
 507                         } else {\r
 508                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 509                                 gp2x_video_setpalette(localPal, 0x40);\r
 510                         }\r
 511                 }\r
 512         }\r
 513 \r
 514         if (notice) osd_text(4, 232, notice);\r
 515         if (currentConfig.EmuOpt & 2)\r
 516                 osd_text(osd_fps_x, 232, fps);\r
 517 \r
 518         //gp2x_video_wait_vsync();\r
 519         gp2x_video_flip();\r
 520 \r
 521         if (!(PicoOpt&0x10)) {\r
 522                 if (!(Pico.video.reg[1]&8)) {\r
 523                         if (currentConfig.EmuOpt&0x80) {\r
 524                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 525                         } else {\r
 526                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 527                         }\r
 528                 } else {\r
 529                         DrawLineDest = gp2x_screen;\r
 530                 }\r
 531         }\r
 532 }\r
 533 \r
 534 \r
 535 // clears whole screen or just the notice area (in all buffers)\r
 536 static void clearArea(int full)\r
 537 {\r
 538         if (PicoOpt&0x10) {\r
 539                 // 8bit fast renderer\r
 540                 if (full) gp2x_memset_all_buffers(0, 0x40, 320*240);\r
 541                 else      gp2x_memset_all_buffers(320*232, 0x40, 320*8);\r
 542         } else if (currentConfig.EmuOpt&0x80) {\r
 543                 // 16bit accurate renderer\r
 544                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 545                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 546         } else {\r
 547                 // 8bit accurate renderer\r
 548                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 549                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 550         }\r
 551 }\r
 552 \r
 553 \r
 554 static void vidResetMode(void)\r
 555 {\r
 556         if (PicoOpt&0x10) {\r
 557                 localPal[0x40] = 0;\r
 558                 localPal[0x41] = 0x00ffffff;\r
 559                 gp2x_video_changemode(8);\r
 560                 gp2x_video_setpalette(localPal, 0x42);\r
 561                 gp2x_memset_all_buffers(0, 0x40, 320*240);\r
 562                 gp2x_video_flip();\r
 563         } else if (currentConfig.EmuOpt&0x80) {\r
 564                 gp2x_video_changemode(15);\r
 565                 PicoDrawSetColorFormat(1);\r
 566                 PicoScan = EmuScan16;\r
 567                 PicoScan(0, 0);\r
 568         } else {\r
 569                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 570                 localPal[0xf0] = 0x00ffffff;\r
 571                 gp2x_video_changemode(8);\r
 572                 gp2x_video_setpalette(localPal, 0x100);\r
 573                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 574                 gp2x_video_flip();\r
 575                 PicoDrawSetColorFormat(2);\r
 576                 PicoScan = EmuScan8;\r
 577                 PicoScan(0, 0);\r
 578         }\r
 579         Pico.m.dirtyPal = 1;\r
 580         // reset scaling\r
 581         gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 582 }\r
 583 \r
 584 \r
 585 static int check_save_file(void)\r
 586 {\r
 587         char saveFname[512];\r
 588         char ext[16];\r
 589         FILE *f;\r
 590 \r
 591         ext[0] = 0;\r
 592         if(state_slot > 0 && state_slot < 10) sprintf(ext, ".%i", state_slot);\r
 593         strcat(ext, ".mds");\r
 594         if(currentConfig.EmuOpt & 8) strcat(ext, ".gz");\r
 595 \r
 596         romfname_ext(saveFname, ext);\r
 597         if ((f = fopen(saveFname, "rb"))) {\r
 598                 fclose(f);\r
 599                 return 1;\r
 600         }\r
 601         return 0;\r
 602 }\r
 603 \r
 604 static void RunEvents(unsigned int which)\r
 605 {\r
 606         if(which & 0x1800) { // save or load (but not both)\r
 607                 int do_it = 1;\r
 608                 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && check_save_file()) {\r
 609                         unsigned long keys;\r
 610                         blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
 611                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 612                                 usleep(50*1024);\r
 613                         if (keys & GP2X_X) do_it = 0;\r
 614                         clearArea(0);\r
 615                 }\r
 616                 if (do_it) {\r
 617                         blit("", (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 618                         emu_SaveLoadGame(which & 0x1000, 0);\r
 619                 }\r
 620 \r
 621                 reset_timing = 1;\r
 622         }\r
 623         if(which & 0x0400) { // switch renderer\r
 624                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 625                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 626                 else   currentConfig.EmuOpt &= ~0x80;\r
 627 \r
 628                 vidResetMode();\r
 629 \r
 630                 if (PicoOpt&0x10) {\r
 631                         strcpy(noticeMsg, " 8bit fast renderer");\r
 632                 } else if (currentConfig.EmuOpt&0x80) {\r
 633                         strcpy(noticeMsg, "16bit accurate renderer");\r
 634                 } else {\r
 635                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 636                 }\r
 637 \r
 638                 gettimeofday(&noticeMsgTime, 0);\r
 639         }\r
 640         if(which & 0x0300) {\r
 641                 if(which&0x0200) {\r
 642                         state_slot -= 1;\r
 643                         if(state_slot < 0) state_slot = 9;\r
 644                 } else {\r
 645                         state_slot += 1;\r
 646                         if(state_slot > 9) state_slot = 0;\r
 647                 }\r
 648                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, check_save_file() ? "USED" : "FREE");\r
 649                 gettimeofday(&noticeMsgTime, 0);\r
 650         }\r
 651         if(which & 0x0080) {\r
 652                 engineState = PGS_Menu;\r
 653         }\r
 654 }\r
 655 \r
 656 \r
 657 static void updateKeys(void)\r
 658 {\r
 659         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 660         static unsigned long prevEvents = 0;\r
 661         int joy, i;\r
 662 \r
 663         keys = gp2x_joystick_read(0);\r
 664         if (keys & GP2X_SELECT) {\r
 665                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 666                 // wait until select is released, so menu would not resume game\r
 667                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 668         }\r
 669 \r
 670         keys &= CONFIGURABLE_KEYS;\r
 671 \r
 672         for (i = 0; i < 32; i++)\r
 673         {\r
 674                 if (keys & (1 << i)) {\r
 675                         int pl, acts = currentConfig.KeyBinds[i];\r
 676                         if (!acts) continue;\r
 677                         pl = (acts >> 16) & 1;\r
 678                         if (combo_keys & (1 << i)) {\r
 679                                 int u = i+1, acts_c = acts & combo_acts;\r
 680                                 // let's try to find the other one\r
 681                                 if (acts_c)\r
 682                                         for (; u < 32; u++)\r
 683                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 684                                                         allActions[pl] |= acts_c;\r
 685                                                         keys &= ~((1 << i) | (1 << u));\r
 686                                                         break;\r
 687                                                 }\r
 688                                 // add non-combo actions if combo ones were not found\r
 689                                 if (!acts_c || u == 32)\r
 690                                         allActions[pl] |= acts & ~combo_acts;\r
 691                         } else {\r
 692                                 allActions[pl] |= acts;\r
 693                         }\r
 694                 }\r
 695         }\r
 696 \r
 697         // add joy inputs\r
 698         if (num_of_joys > 0)\r
 699         {\r
 700                 gp2x_usbjoy_update();\r
 701                 for (joy = 0; joy < num_of_joys; joy++) {\r
 702                         int keys = gp2x_usbjoy_check2(joy);\r
 703                         for (i = 0; i < 32; i++) {\r
 704                                 if (keys & (1 << i)) {\r
 705                                         int acts = currentConfig.JoyBinds[joy][i];\r
 706                                         int pl = (acts >> 16) & 1;\r
 707                                         allActions[pl] |= acts;\r
 708                                 }\r
 709                         }\r
 710                 }\r
 711         }\r
 712 \r
 713         if(movie_data)\r
 714         {\r
 715                 int offs = Pico.m.frame_count*3 + 0x40;\r
 716                 if (offs+3 > movie_size) {\r
 717                         free(movie_data);\r
 718                         movie_data = 0;\r
 719                         strcpy(noticeMsg, "END OF MOVIE.");\r
 720                         printf("END OF MOVIE.\n");\r
 721                         gettimeofday(&noticeMsgTime, 0);\r
 722                 } else {\r
 723                         // MXYZ SACB RLDU\r
 724                         PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 725                         if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 726                         if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 727                         if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 728                         PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 729                         if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 730                         if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 731                         if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 732                         PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 733                         if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 734                         if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 735                         PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 736                         if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 737                         if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 738                 }\r
 739         }\r
 740         else\r
 741         {\r
 742                 PicoPad[0] = (unsigned short) allActions[0];\r
 743                 PicoPad[1] = (unsigned short) allActions[1];\r
 744         }\r
 745         Pico.m.frame_count++;\r
 746 \r
 747         events = (allActions[0] | allActions[1]) >> 16;\r
 748 \r
 749         // volume is treated in special way and triggered every frame\r
 750         if(events & 0x6000) {\r
 751                 int vol = currentConfig.volume;\r
 752                 if (events & 0x2000) {\r
 753                         if (vol < 90) vol++;\r
 754                 } else {\r
 755                         if (vol >  0) vol--;\r
 756                 }\r
 757                 gp2x_sound_volume(vol, vol);\r
 758                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 759                 gettimeofday(&noticeMsgTime, 0);\r
 760                 currentConfig.volume = vol;\r
 761         }\r
 762 \r
 763         events &= ~prevEvents;\r
 764         if (events) RunEvents(events);\r
 765 \r
 766         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 767 }\r
 768 \r
 769 static int snd_excess_add = 0, snd_excess_cnt = 0; // hack\r
 770 \r
 771 static void updateSound(void)\r
 772 {\r
 773         int len = (PicoOpt&8)?PsndLen*2:PsndLen;\r
 774 \r
 775         snd_excess_cnt += snd_excess_add;\r
 776         if (snd_excess_cnt >= 0x10000) {\r
 777                 snd_excess_cnt -= 0x10000;\r
 778                 if (PicoOpt&8) {\r
 779                         PsndOut[len]   = PsndOut[len-2];\r
 780                         PsndOut[len+1] = PsndOut[len-1];\r
 781                         len+=2;\r
 782                 } else {\r
 783                         PsndOut[len]   = PsndOut[len-1];\r
 784                         len++;\r
 785                 }\r
 786         }\r
 787 \r
 788         gp2x_sound_write(PsndOut, len<<1);\r
 789 }\r
 790 \r
 791 \r
 792 static void SkipFrame(int do_sound)\r
 793 {\r
 794         void *sndbuff_tmp = 0;\r
 795         if (PsndOut && !do_sound) {\r
 796                 sndbuff_tmp = PsndOut;\r
 797                 PsndOut = 0;\r
 798         }\r
 799 \r
 800         PicoSkipFrame=1;\r
 801         PicoFrame();\r
 802         PicoSkipFrame=0;\r
 803 \r
 804         if (sndbuff_tmp && !do_sound) {\r
 805                 PsndOut = sndbuff_tmp;\r
 806         }\r
 807 }\r
 808 \r
 809 \r
 810 static void simpleWait(int thissec, int lim_time)\r
 811 {\r
 812         struct timeval tval;\r
 813 \r
 814         spend_cycles(1024);\r
 815         gettimeofday(&tval, 0);\r
 816         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 817 \r
 818         while(tval.tv_usec < lim_time)\r
 819         {\r
 820                 spend_cycles(1024);\r
 821                 gettimeofday(&tval, 0);\r
 822                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 823         }\r
 824 }\r
 825 \r
 826 \r
 827 void emu_Loop(void)\r
 828 {\r
 829         static int gp2x_old_clock = 200;\r
 830         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
 831         char fpsbuff[24]; // fps count c string\r
 832         struct timeval tval; // timing\r
 833         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
 834         int target_fps, target_frametime, lim_time, i;\r
 835         char *notice = 0;\r
 836 \r
 837         printf("entered emu_Loop()\n");\r
 838 \r
 839         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 840                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 841                 set_FCLK(currentConfig.CPUclock);\r
 842                 gp2x_old_clock = currentConfig.CPUclock;\r
 843                 printf(" done\n");\r
 844         }\r
 845 \r
 846         if (gp2x_old_gamma != currentConfig.gamma) {\r
 847                 set_gamma(currentConfig.gamma);\r
 848                 gp2x_old_gamma = currentConfig.gamma;\r
 849                 printf("updated gamma to %i\n", currentConfig.gamma);\r
 850         }\r
 851 \r
 852         fpsbuff[0] = 0;\r
 853 \r
 854         // make sure we are in correct mode\r
 855         vidResetMode();\r
 856         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 857         find_combos();\r
 858 \r
 859         // pal/ntsc might have changed, reset related stuff\r
 860         target_fps = Pico.m.pal ? 50 : 60;\r
 861         target_frametime = 1000000/target_fps;\r
 862         reset_timing = 1;\r
 863 \r
 864         // prepare sound stuff\r
 865         if(currentConfig.EmuOpt & 4) {\r
 866                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
 867                         /* if 940 is turned off, we need it to be put back to sleep */\r
 868                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
 869                                 Reset940(1);\r
 870                                 Pause940(1);\r
 871                         }\r
 872                         sound_rerate();\r
 873                 }\r
 874                 //excess_samples = PsndRate - PsndLen*target_fps;\r
 875                 snd_excess_cnt = 0;\r
 876                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 877                 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
 878                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 879                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 880                 PicoWriteSound = updateSound;\r
 881                 PsndOut = calloc((PicoOpt&8) ? (PsndLen*4+4) : (PsndLen*2+2), 1);\r
 882                 PsndRate_old = PsndRate;\r
 883                 PsndLen_real = PsndLen;\r
 884                 PicoOpt_old  = PicoOpt;\r
 885                 pal_old = Pico.m.pal;\r
 886         } else {\r
 887                 PsndOut = 0;\r
 888         }\r
 889 \r
 890         // loop?\r
 891         while (engineState == PGS_Running)\r
 892         {\r
 893                 int modes;\r
 894 \r
 895                 gettimeofday(&tval, 0);\r
 896                 if(reset_timing) {\r
 897                         reset_timing = 0;\r
 898                         thissec = tval.tv_sec;\r
 899                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
 900                 }\r
 901 \r
 902                 // show notice message?\r
 903                 if(noticeMsgTime.tv_sec) {\r
 904                         static int noticeMsgSum;\r
 905                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 906                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 907                                 clearArea(0);\r
 908                                 notice = 0;\r
 909                         } else {\r
 910                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 911                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 912                                 notice = noticeMsg;\r
 913                         }\r
 914                 }\r
 915 \r
 916                 // check for mode changes\r
 917                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 918                 if (modes != oldmodes) {\r
 919                         int scalex = 320;\r
 920                         osd_fps_x = OSD_FPS_X;\r
 921                         if (modes & 4) {\r
 922                                 vidCpyM2 = vidCpyM2_40col;\r
 923                         } else {\r
 924                                 if (PicoOpt & 0x100) {\r
 925                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 926                                         scalex = 256;\r
 927                                         osd_fps_x = OSD_FPS_X - 64;\r
 928                                 } else {\r
 929                                         vidCpyM2 = vidCpyM2_32col;\r
 930                                 }\r
 931                         }\r
 932                         gp2x_video_RGB_setscaling(scalex, 240);\r
 933                         oldmodes = modes;\r
 934                         clearArea(1);\r
 935                 }\r
 936 \r
 937                 // second changed?\r
 938                 if(thissec != tval.tv_sec) {\r
 939 #ifdef BENCHMARK\r
 940                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 941                         if(++bench == 10) {\r
 942                                 bench = 0;\r
 943                                 bench_fps_s = bench_fps;\r
 944                                 bf[bfp++ & 3] = bench_fps;\r
 945                                 bench_fps = 0;\r
 946                         }\r
 947                         bench_fps += frames_shown;\r
 948                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 949 #else\r
 950                         if(currentConfig.EmuOpt & 2)\r
 951                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 952 #endif\r
 953                         thissec = tval.tv_sec;\r
 954 \r
 955                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 956                                 frames_done = frames_shown = 0;\r
 957                         } else {\r
 958                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 959                                 // when second changes, but we don't want buffer to starve.\r
 960                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
 961                                         updateKeys();\r
 962                                         SkipFrame(1); frames_done++;\r
 963                                 }\r
 964 \r
 965                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
 966                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
 967                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
 968                         }\r
 969                 }\r
 970 \r
 971                 lim_time = (frames_done+1) * target_frametime;\r
 972                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
 973                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 974                                 updateKeys();\r
 975                                 SkipFrame(1); frames_done++;\r
 976                                 if (PsndOut) { // do framelimitting if sound is enabled\r
 977                                         gettimeofday(&tval, 0);\r
 978                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 979                                         if(tval.tv_usec < lim_time) { // we are too fast\r
 980                                                 simpleWait(thissec, lim_time);\r
 981                                         }\r
 982                                 }\r
 983                                 lim_time += target_frametime;\r
 984                         }\r
 985                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
 986                         // no time left for this frame - skip\r
 987                         updateKeys();\r
 988                         SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
 989                         continue;\r
 990                 }\r
 991 \r
 992                 updateKeys();\r
 993                 PicoFrame();\r
 994 \r
 995 #if 0\r
 996 if (Pico.m.frame_count == 31563) {\r
 997         FILE *f;\r
 998         f = fopen("ram_p.bin", "wb");\r
 999         if (!f) { printf("!f\n"); exit(1); }\r
1000         fwrite(Pico.ram, 1, 0x10000, f);\r
1001         fclose(f);\r
1002         exit(0);\r
1003 }\r
1004 #endif\r
1005 #if 0\r
1006                 // debug\r
1007                 {\r
1008                         #define BYTE unsigned char\r
1009                         #define WORD unsigned short\r
1010                         struct\r
1011                         {\r
1012                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1013                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1014                                 BYTE ImageType;       /* 02h  Image type code */\r
1015                                 WORD CMapStart;       /* 03h  Color map origin */\r
1016                                 WORD CMapLength;      /* 05h  Color map length */\r
1017                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1018                                 WORD XOffset;         /* 08h  X origin of image */\r
1019                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1020                                 WORD Width;           /* 0Ch  Width of image */\r
1021                                 WORD Height;          /* 0Eh  Height of image */\r
1022                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1023                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1024                         } __attribute__((packed)) TGAHEAD;\r
1025                         static unsigned short oldscr[320*240];\r
1026                         FILE *f; char name[128]; int i;\r
1027 \r
1028                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1029                         TGAHEAD.ImageType = 2;\r
1030                         TGAHEAD.Width = 320;\r
1031                         TGAHEAD.Height = 240;\r
1032                         TGAHEAD.PixelDepth = 16;\r
1033                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1034 \r
1035                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1036 \r
1037                         for (i = 0; i < 320*240; i++)\r
1038                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1039                         if (i < 320*240)\r
1040                         {\r
1041                                 for (i = 0; i < 320*240; i++)\r
1042                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1043                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1044                                 f = fopen(name, "wb");\r
1045                                 if (!f) { printf("!f\n"); exit(1); }\r
1046                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1047                                 fwrite(oldscr, 1, 320*240*2, f);\r
1048                                 fclose(f);\r
1049                         }\r
1050                 }\r
1051 #endif\r
1052 \r
1053                 // check time\r
1054                 gettimeofday(&tval, 0);\r
1055                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1056 \r
1057                 // sleep if we are still too fast\r
1058                 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
1059                 {\r
1060                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1061                         gettimeofday(&tval, 0);\r
1062                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1063                         if(tval.tv_usec < lim_time)\r
1064                         {\r
1065                                 // we are too fast\r
1066                                 simpleWait(thissec, lim_time);\r
1067                         }\r
1068                 }\r
1069 \r
1070                 blit(fpsbuff, notice);\r
1071 \r
1072                 frames_done++; frames_shown++;\r
1073         }\r
1074 \r
1075         // save SRAM\r
1076         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1077                 emu_SaveLoadGame(0, 1);\r
1078                 SRam.changed = 0;\r
1079         }\r
1080 \r
1081         if (PsndOut != 0) {\r
1082                 free(PsndOut);\r
1083                 PsndOut = 0;\r
1084         }\r
1085 }\r
1086 \r
1087 \r
1088 void emu_ResetGame(void)\r
1089 {\r
1090         PicoReset(0);\r
1091         reset_timing = 1;\r
1092 }\r
1093 \r
1094 \r
1095 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1096 {\r
1097         return gzread(file, p, _n);\r
1098 }\r
1099 \r
1100 \r
1101 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1102 {\r
1103         return gzwrite(file, p, _n);\r
1104 }\r
1105 \r
1106 typedef unsigned int (*STATE_SL_FUNC)(void *, unsigned int, unsigned int, void *);\r
1107 \r
1108 int emu_SaveLoadGame(int load, int sram)\r
1109 {\r
1110         int ret = 0;\r
1111         char saveFname[512];\r
1112 \r
1113         // make save filename\r
1114         romfname_ext(saveFname, "");\r
1115         if(sram) strcat(saveFname, ".srm");\r
1116         else {\r
1117                 if(state_slot > 0 && state_slot < 10) sprintf(saveFname, "%s.%i", saveFname, state_slot);\r
1118                 strcat(saveFname, ".mds");\r
1119         }\r
1120 \r
1121         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1122 \r
1123         if(sram) {\r
1124                 FILE *sramFile;\r
1125                 int sram_size = SRam.end-SRam.start+1;\r
1126                 if(SRam.reg_back & 4) sram_size=0x2000;\r
1127                 if(!SRam.data) return 0; // SRam forcefully disabled for this game\r
1128                 if(load) {\r
1129                         sramFile = fopen(saveFname, "rb");\r
1130                         if(!sramFile) return -1;\r
1131                         fread(SRam.data, 1, sram_size, sramFile);\r
1132                         fclose(sramFile);\r
1133                 } else {\r
1134                         // sram save needs some special processing\r
1135                         // see if we have anything to save\r
1136                         for(; sram_size > 0; sram_size--)\r
1137                                 if(SRam.data[sram_size-1]) break;\r
1138 \r
1139                         if(sram_size) {\r
1140                                 sramFile = fopen(saveFname, "wb");\r
1141                                 ret = fwrite(SRam.data, 1, sram_size, sramFile);\r
1142                                 ret = (ret != sram_size) ? -1 : 0;\r
1143                                 fclose(sramFile);\r
1144                                 sync();\r
1145                         }\r
1146                 }\r
1147                 return ret;\r
1148         } else {\r
1149                 void *PmovFile = NULL;\r
1150                 // try gzip first\r
1151                 if(currentConfig.EmuOpt & 8) {\r
1152                         strcat(saveFname, ".gz");\r
1153                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1154                                 areaRead  = gzRead2;\r
1155                                 areaWrite = gzWrite2;\r
1156                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1157                         } else\r
1158                                 saveFname[strlen(saveFname)-3] = 0;\r
1159                 }\r
1160                 if(!PmovFile) { // gzip failed or was disabled\r
1161                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1162                                 areaRead  = (STATE_SL_FUNC) fread;\r
1163                                 areaWrite = (STATE_SL_FUNC) fwrite;\r
1164                         }\r
1165                 }\r
1166                 if(PmovFile) {\r
1167                         PmovState(load ? 6 : 5, PmovFile);\r
1168                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1169                         if(areaRead == gzRead2)\r
1170                                  gzclose(PmovFile);\r
1171                         else fclose ((FILE *) PmovFile);\r
1172                         PmovFile = 0;\r
1173                         if (!load) sync();\r
1174                         else Pico.m.dirtyPal=1;\r
1175                 } else {\r
1176                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1177                         ret = -1;\r
1178                 }\r
1179 \r
1180                 gettimeofday(&noticeMsgTime, 0);\r
1181                 return ret;\r
1182         }\r
1183 }\r