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 static void get_ext(char *ext)\r
  99 {\r
 100         char *p;\r
 101 \r
 102         p = romFileName + strlen(romFileName) - 4;\r
 103         if (p < romFileName) p = romFileName;\r
 104         strncpy(ext, p, 4);\r
 105         ext[4] = 0;\r
 106         strlwr(ext);\r
 107 }\r
 108 \r
 109 int emu_ReloadRom(void)\r
 110 {\r
 111         unsigned int rom_size = 0;\r
 112         char ext[5];\r
 113         FILE *rom;\r
 114         int ret;\r
 115 \r
 116         printf("emu_ReloadRom(%s)\n", romFileName);\r
 117 \r
 118         // detect wrong extensions\r
 119         get_ext(ext);\r
 120 \r
 121         if(!strcmp(ext, ".srm") || !strcmp(ext, "s.gz") || !strcmp(ext, ".mds")) { // s.gz ~ .mds.gz\r
 122                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 123                 return 0;\r
 124         }\r
 125 \r
 126         // check for movie file\r
 127         if(movie_data) {\r
 128                 free(movie_data);\r
 129                 movie_data = 0;\r
 130         }\r
 131         if(!strcmp(ext, ".gmv")) {\r
 132                 // check for both gmv and rom\r
 133                 int dummy;\r
 134                 FILE *movie_file = fopen(romFileName, "rb");\r
 135                 if(!movie_file) {\r
 136                         sprintf(menuErrorMsg, "Failed to open movie.");\r
 137                         return 0;\r
 138                 }\r
 139                 fseek(movie_file, 0, SEEK_END);\r
 140                 movie_size = ftell(movie_file);\r
 141                 fseek(movie_file, 0, SEEK_SET);\r
 142                 if(movie_size < 64+3) {\r
 143                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 144                         fclose(movie_file);\r
 145                         return 0;\r
 146                 }\r
 147                 movie_data = malloc(movie_size);\r
 148                 if(movie_data == NULL) {\r
 149                         sprintf(menuErrorMsg, "low memory.");\r
 150                         fclose(movie_file);\r
 151                         return 0;\r
 152                 }\r
 153                 fread(movie_data, 1, movie_size, movie_file);\r
 154                 fclose(movie_file);\r
 155                 if (strncmp((char *)movie_data, "Gens Movie TEST", 15) != 0) {\r
 156                         sprintf(menuErrorMsg, "Invalid GMV file.");\r
 157                         return 0;\r
 158                 }\r
 159                 dummy = try_rfn_ext(".zip") || try_rfn_ext(".bin") ||\r
 160                         try_rfn_ext(".smd") || try_rfn_ext(".gen");\r
 161                 if (!dummy) {\r
 162                         sprintf(menuErrorMsg, "Could't find a ROM for movie.");\r
 163                         return 0;\r
 164                 }\r
 165                 get_ext(ext);\r
 166         }\r
 167 \r
 168         rom = fopen(romFileName, "rb");\r
 169         if(!rom) {\r
 170                 sprintf(menuErrorMsg, "Failed to open rom.");\r
 171                 return 0;\r
 172         }\r
 173 \r
 174         if(rom_data) {\r
 175                 free(rom_data);\r
 176                 rom_data = 0;\r
 177                 rom_size = 0;\r
 178         }\r
 179 \r
 180         // zipfile support\r
 181         if(!strcasecmp(ext, ".zip")) {\r
 182                 fclose(rom);\r
 183                 ret = CartLoadZip(romFileName, &rom_data, &rom_size);\r
 184                 if(ret) {\r
 185                         if (ret == 4) strcpy(menuErrorMsg, "No ROMs in zip found.");\r
 186                         else sprintf(menuErrorMsg, "Unzip failed with code %i", ret);\r
 187                         printf("%s\n", menuErrorMsg);\r
 188                         return 0;\r
 189                 }\r
 190         } else {\r
 191                 if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {\r
 192                         sprintf(menuErrorMsg, "PicoCartLoad() failed.");\r
 193                         printf("%s\n", menuErrorMsg);\r
 194                         fclose(rom);\r
 195                         return 0;\r
 196                 }\r
 197                 fclose(rom);\r
 198         }\r
 199 \r
 200         // detect wrong files (Pico crashes on very small files), also see if ROM EP is good\r
 201         if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||\r
 202           ((*(unsigned short *)(rom_data+4)<<16)|(*(unsigned short *)(rom_data+6))) >= (int)rom_size) {\r
 203                 if (rom_data) free(rom_data);\r
 204                 rom_data = 0;\r
 205                 sprintf(menuErrorMsg, "Not a ROM selected.");\r
 206                 return 0;\r
 207         }\r
 208 \r
 209         printf("PicoCartInsert(%p, %d);\n", rom_data, rom_size);\r
 210         if(PicoCartInsert(rom_data, rom_size)) {\r
 211                 sprintf(menuErrorMsg, "Failed to load ROM.");\r
 212                 return 0;\r
 213         }\r
 214 \r
 215         // load config for this ROM\r
 216         ret = emu_ReadConfig(1);\r
 217         if (!ret)\r
 218                 emu_ReadConfig(0);\r
 219 \r
 220         // emu_ReadConfig() might have messed currentConfig.lastRomFile\r
 221         strncpy(currentConfig.lastRomFile, romFileName, sizeof(currentConfig.lastRomFile)-1);\r
 222         currentConfig.lastRomFile[sizeof(currentConfig.lastRomFile)-1] = 0;\r
 223 \r
 224         // additional movie stuff\r
 225         if(movie_data) {\r
 226                 if(movie_data[0x14] == '6')\r
 227                      PicoOpt |=  0x20; // 6 button pad\r
 228                 else PicoOpt &= ~0x20;\r
 229                 PicoOpt |= 0x40; // accurate timing\r
 230                 if(movie_data[0xF] >= 'A') {\r
 231                         if(movie_data[0x16] & 0x80) {\r
 232                                 PicoRegionOverride = 8;\r
 233                         } else {\r
 234                                 PicoRegionOverride = 4;\r
 235                         }\r
 236                         PicoReset(0);\r
 237                         // TODO: bits 6 & 5\r
 238                 }\r
 239                 movie_data[0x18+30] = 0;\r
 240                 sprintf(noticeMsg, "MOVIE: %s", (char *) &movie_data[0x18]);\r
 241         }\r
 242         else\r
 243         {\r
 244                 if(Pico.m.pal) {\r
 245                         strcpy(noticeMsg, "PAL SYSTEM / 50 FPS");\r
 246                 } else {\r
 247                         strcpy(noticeMsg, "NTSC SYSTEM / 60 FPS");\r
 248                 }\r
 249         }\r
 250         gettimeofday(&noticeMsgTime, 0);\r
 251 \r
 252         // load SRAM for this ROM\r
 253         if(currentConfig.EmuOpt & 1)\r
 254                 emu_SaveLoadGame(1, 1);\r
 255 \r
 256         Pico.m.frame_count = 0;\r
 257 \r
 258         return 1;\r
 259 }\r
 260 \r
 261 \r
 262 void emu_Init(void)\r
 263 {\r
 264         // make temp buffer for alt renderer\r
 265         framebuff = malloc((8+320)*(8+240+8));\r
 266         if (!framebuff)\r
 267         {\r
 268                 printf("framebuff == 0\n");\r
 269         }\r
 270 \r
 271         PicoInit();\r
 272 \r
 273 //      logf = fopen("log.txt", "w");\r
 274 }\r
 275 \r
 276 \r
 277 static void romfname_ext(char *dst, char *ext)\r
 278 {\r
 279         char *p;\r
 280 \r
 281         // make save filename\r
 282         for (p = romFileName+strlen(romFileName)-1; p >= romFileName && *p != '/'; p--); p++;\r
 283         strncpy(dst, p, 511);\r
 284         dst[511-8] = 0;\r
 285         if(dst[strlen(dst)-4] == '.') dst[strlen(dst)-4] = 0;\r
 286         strcat(dst, ext);\r
 287 }\r
 288 \r
 289 \r
 290 static void find_combos(void)\r
 291 {\r
 292         int act, u;\r
 293 \r
 294         // find out which keys and actions are combos\r
 295         combo_keys = combo_acts = 0;\r
 296         for (act = 0; act < 32; act++)\r
 297         {\r
 298                 int keyc = 0;\r
 299                 if (act == 16) continue; // player2 flag\r
 300                 for (u = 0; u < 32; u++)\r
 301                 {\r
 302                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 303                 }\r
 304                 if (keyc > 1)\r
 305                 {\r
 306                         // loop again and mark those keys and actions as combo\r
 307                         for (u = 0; u < 32; u++)\r
 308                         {\r
 309                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 310                                         combo_keys |= 1 << u;\r
 311                                         combo_acts |= 1 << act;\r
 312                                 }\r
 313                         }\r
 314                 }\r
 315         }\r
 316         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 317 }\r
 318 \r
 319 \r
 320 int emu_ReadConfig(int game)\r
 321 {\r
 322         FILE *f;\r
 323         char cfg[512];\r
 324         int bread = 0;\r
 325 \r
 326         if (!game)\r
 327         {\r
 328                 // set default config\r
 329                 memset(&currentConfig, 0, sizeof(currentConfig));\r
 330                 currentConfig.lastRomFile[0] = 0;\r
 331                 currentConfig.EmuOpt  = 0x1f;\r
 332                 currentConfig.PicoOpt = 0x0f;\r
 333                 currentConfig.PsndRate = 22050;\r
 334                 currentConfig.PicoRegion = 0; // auto\r
 335                 currentConfig.Frameskip = -1; // auto\r
 336                 currentConfig.CPUclock = 200;\r
 337                 currentConfig.volume = 50;\r
 338                 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 339                 currentConfig.KeyBinds[ 4] = 1<<1;\r
 340                 currentConfig.KeyBinds[ 2] = 1<<2;\r
 341                 currentConfig.KeyBinds[ 6] = 1<<3;\r
 342                 currentConfig.KeyBinds[14] = 1<<4;\r
 343                 currentConfig.KeyBinds[13] = 1<<5;\r
 344                 currentConfig.KeyBinds[12] = 1<<6;\r
 345                 currentConfig.KeyBinds[ 8] = 1<<7;\r
 346                 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 347                 currentConfig.KeyBinds[10] = 1<<27; // save state\r
 348                 currentConfig.KeyBinds[11] = 1<<28; // load state\r
 349                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 350                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 351                 currentConfig.gamma = 100;\r
 352                 strncpy(cfg, PicoConfigFile, 511);\r
 353                 cfg[511] = 0;\r
 354         } else {\r
 355                 romfname_ext(cfg, ".pbcfg");\r
 356         }\r
 357 \r
 358         printf("emu_ReadConfig: %s ", cfg);\r
 359         f = fopen(cfg, "rb");\r
 360         if (f) {\r
 361                 bread = fread(&currentConfig, 1, sizeof(currentConfig), f);\r
 362                 fclose(f);\r
 363         }\r
 364         printf((bread == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 365 \r
 366         PicoOpt = currentConfig.PicoOpt;\r
 367         PsndRate = currentConfig.PsndRate;\r
 368         PicoRegionOverride = currentConfig.PicoRegion;\r
 369         if (PicoOpt & 0x20) {\r
 370                 actionNames[ 8] = "Z"; actionNames[ 9] = "Y";\r
 371                 actionNames[10] = "X"; actionNames[11] = "MODE";\r
 372         }\r
 373         // some sanity checks\r
 374         if (currentConfig.CPUclock < 1 || currentConfig.CPUclock > 4096) currentConfig.CPUclock = 200;\r
 375         if (currentConfig.gamma < 10 || currentConfig.gamma > 300) currentConfig.gamma = 100;\r
 376         // if volume keys are unbound, bind them to volume control\r
 377         if (!currentConfig.KeyBinds[23] && !currentConfig.KeyBinds[22]) {\r
 378                 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 379                 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 380         }\r
 381 \r
 382         return (bread == sizeof(currentConfig));\r
 383 }\r
 384 \r
 385 \r
 386 int emu_WriteConfig(int game)\r
 387 {\r
 388         FILE *f;\r
 389         char cfg[512];\r
 390         int bwrite = 0;\r
 391 \r
 392         if (!game)\r
 393         {\r
 394                 strncpy(cfg, PicoConfigFile, 511);\r
 395                 cfg[511] = 0;\r
 396         } else {\r
 397                 romfname_ext(cfg, ".pbcfg");\r
 398         }\r
 399 \r
 400         printf("emu_WriteConfig: %s ", cfg);\r
 401         f = fopen(cfg, "wb");\r
 402         if (f) {\r
 403                 currentConfig.PicoOpt = PicoOpt;\r
 404                 currentConfig.PsndRate = PsndRate;\r
 405                 currentConfig.PicoRegion = PicoRegionOverride;\r
 406                 bwrite = fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 407                 fflush(f);\r
 408                 fclose(f);\r
 409                 sync();\r
 410         }\r
 411         printf((bwrite == sizeof(currentConfig)) ? "(ok)\n" : "(failed)\n");\r
 412 \r
 413         return (bwrite == sizeof(currentConfig));\r
 414 }\r
 415 \r
 416 \r
 417 void emu_Deinit(void)\r
 418 {\r
 419         // save SRAM\r
 420         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 421                 emu_SaveLoadGame(0, 1);\r
 422                 SRam.changed = 0;\r
 423         }\r
 424 \r
 425         if (!(currentConfig.EmuOpt & 0x20))\r
 426                 emu_WriteConfig(0);\r
 427         free(framebuff);\r
 428 \r
 429         PicoExit();\r
 430 //      fclose(logf);\r
 431 \r
 432         // restore gamma\r
 433         if (gp2x_old_gamma != 100)\r
 434                 set_gamma(100);\r
 435 }\r
 436 \r
 437 \r
 438 void osd_text(int x, int y, char *text)\r
 439 {\r
 440         int len = strlen(text)*8;\r
 441 \r
 442         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 443                 int *p, i, h, black, white;\r
 444                 if (PicoOpt&0x10) {\r
 445                         black = 0x40404040; white = 0x41;\r
 446                 } else {\r
 447                         black = 0xe0e0e0e0; white = 0xf0;\r
 448                 }\r
 449                 x &= ~3; // align x\r
 450                 len = (len+3) >> 2;\r
 451                 for (h = 0; h < 8; h++) {\r
 452                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 453                         for (i = len; i; i--, p++) *p = black;\r
 454                 }\r
 455                 gp2x_text_out8_2(x, y, text, white);\r
 456         } else {\r
 457                 int *p, i, h;\r
 458                 x &= ~1; // align x\r
 459                 len = (len+1) >> 1;\r
 460                 for (h = 0; h < 8; h++) {\r
 461                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 462                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 463                 }\r
 464                 gp2x_text_out15(x, y, text);\r
 465         }\r
 466 }\r
 467 \r
 468 static int EmuScan16(unsigned int num, void *sdata)\r
 469 {\r
 470         if (!(Pico.video.reg[1]&8)) num += 8;\r
 471         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 472 \r
 473         return 0;\r
 474 }\r
 475 \r
 476 static int EmuScan8(unsigned int num, void *sdata)\r
 477 {\r
 478         if (!(Pico.video.reg[1]&8)) num += 8;\r
 479         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 480 \r
 481         return 0;\r
 482 }\r
 483 \r
 484 static int localPal[0x100];\r
 485 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 486 \r
 487 static void blit(char *fps, char *notice)\r
 488 {\r
 489         if (PicoOpt&0x10) {\r
 490                 // 8bit fast renderer\r
 491                 if (Pico.m.dirtyPal) {\r
 492                         Pico.m.dirtyPal = 0;\r
 493                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 494                         // feed new palette to our device\r
 495                         gp2x_video_setpalette(localPal, 0x40);\r
 496                 }\r
 497                 vidCpyM2((unsigned char *)gp2x_screen+320*8, framebuff+328*8);\r
 498         } else if (!(currentConfig.EmuOpt&0x80)) {\r
 499                 // 8bit accurate renderer\r
 500                 if (Pico.m.dirtyPal) {\r
 501                         Pico.m.dirtyPal = 0;\r
 502                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 503                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 504                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 505                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 506                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 507                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 508                                 localPal[0xf0] = 0x00ffffff;\r
 509                                 gp2x_video_setpalette(localPal, 0x100);\r
 510                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 511                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 512                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 513                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 514                                 gp2x_video_setpalette(localPal, 0xc0);\r
 515                         } else {\r
 516                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 517                                 gp2x_video_setpalette(localPal, 0x40);\r
 518                         }\r
 519                 }\r
 520         }\r
 521 \r
 522         if (notice) osd_text(4, 232, notice);\r
 523         if (currentConfig.EmuOpt & 2)\r
 524                 osd_text(osd_fps_x, 232, fps);\r
 525 \r
 526         //gp2x_video_wait_vsync();\r
 527         gp2x_video_flip();\r
 528 \r
 529         if (!(PicoOpt&0x10)) {\r
 530                 if (!(Pico.video.reg[1]&8)) {\r
 531                         if (currentConfig.EmuOpt&0x80) {\r
 532                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 533                         } else {\r
 534                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 535                         }\r
 536                 } else {\r
 537                         DrawLineDest = gp2x_screen;\r
 538                 }\r
 539         }\r
 540 }\r
 541 \r
 542 \r
 543 // clears whole screen or just the notice area (in all buffers)\r
 544 static void clearArea(int full)\r
 545 {\r
 546         if (PicoOpt&0x10) {\r
 547                 // 8bit fast renderer\r
 548                 if (full) gp2x_memset_all_buffers(0, 0x40, 320*240);\r
 549                 else      gp2x_memset_all_buffers(320*232, 0x40, 320*8);\r
 550         } else if (currentConfig.EmuOpt&0x80) {\r
 551                 // 16bit accurate renderer\r
 552                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 553                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 554         } else {\r
 555                 // 8bit accurate renderer\r
 556                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 557                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 558         }\r
 559 }\r
 560 \r
 561 \r
 562 static void vidResetMode(void)\r
 563 {\r
 564         if (PicoOpt&0x10) {\r
 565                 localPal[0x40] = 0;\r
 566                 localPal[0x41] = 0x00ffffff;\r
 567                 gp2x_video_changemode(8);\r
 568                 gp2x_video_setpalette(localPal, 0x42);\r
 569                 gp2x_memset_all_buffers(0, 0x40, 320*240);\r
 570                 gp2x_video_flip();\r
 571         } else if (currentConfig.EmuOpt&0x80) {\r
 572                 gp2x_video_changemode(15);\r
 573                 PicoDrawSetColorFormat(1);\r
 574                 PicoScan = EmuScan16;\r
 575                 PicoScan(0, 0);\r
 576         } else {\r
 577                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 578                 localPal[0xf0] = 0x00ffffff;\r
 579                 gp2x_video_changemode(8);\r
 580                 gp2x_video_setpalette(localPal, 0x100);\r
 581                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 582                 gp2x_video_flip();\r
 583                 PicoDrawSetColorFormat(2);\r
 584                 PicoScan = EmuScan8;\r
 585                 PicoScan(0, 0);\r
 586         }\r
 587         Pico.m.dirtyPal = 1;\r
 588         // reset scaling\r
 589         gp2x_video_RGB_setscaling((PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 590 }\r
 591 \r
 592 \r
 593 static int check_save_file(void)\r
 594 {\r
 595         char saveFname[512];\r
 596         char ext[16];\r
 597         FILE *f;\r
 598 \r
 599         ext[0] = 0;\r
 600         if(state_slot > 0 && state_slot < 10) sprintf(ext, ".%i", state_slot);\r
 601         strcat(ext, ".mds");\r
 602         if(currentConfig.EmuOpt & 8) strcat(ext, ".gz");\r
 603 \r
 604         romfname_ext(saveFname, ext);\r
 605         if ((f = fopen(saveFname, "rb"))) {\r
 606                 fclose(f);\r
 607                 return 1;\r
 608         }\r
 609         return 0;\r
 610 }\r
 611 \r
 612 static void RunEvents(unsigned int which)\r
 613 {\r
 614         if(which & 0x1800) { // save or load (but not both)\r
 615                 int do_it = 1;\r
 616                 if (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200) && check_save_file()) {\r
 617                         unsigned long keys;\r
 618                         blit("", "OVERWRITE SAVE? (Y=yes, X=no)");\r
 619                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 620                                 usleep(50*1024);\r
 621                         if (keys & GP2X_X) do_it = 0;\r
 622                         clearArea(0);\r
 623                 }\r
 624                 if (do_it) {\r
 625                         blit("", (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 626                         if(movie_data) {\r
 627                         }\r
 628                         emu_SaveLoadGame(which & 0x1000, 0);\r
 629                 }\r
 630 \r
 631                 reset_timing = 1;\r
 632         }\r
 633         if(which & 0x0400) { // switch renderer\r
 634                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 635                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 636                 else   currentConfig.EmuOpt &= ~0x80;\r
 637 \r
 638                 vidResetMode();\r
 639 \r
 640                 if (PicoOpt&0x10) {\r
 641                         strcpy(noticeMsg, " 8bit fast renderer");\r
 642                 } else if (currentConfig.EmuOpt&0x80) {\r
 643                         strcpy(noticeMsg, "16bit accurate renderer");\r
 644                 } else {\r
 645                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 646                 }\r
 647 \r
 648                 gettimeofday(&noticeMsgTime, 0);\r
 649         }\r
 650         if(which & 0x0300) {\r
 651                 if(which&0x0200) {\r
 652                         state_slot -= 1;\r
 653                         if(state_slot < 0) state_slot = 9;\r
 654                 } else {\r
 655                         state_slot += 1;\r
 656                         if(state_slot > 9) state_slot = 0;\r
 657                 }\r
 658                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, check_save_file() ? "USED" : "FREE");\r
 659                 gettimeofday(&noticeMsgTime, 0);\r
 660         }\r
 661         if(which & 0x0080) {\r
 662                 engineState = PGS_Menu;\r
 663         }\r
 664 }\r
 665 \r
 666 \r
 667 static void updateMovie(void)\r
 668 {\r
 669         int offs = Pico.m.frame_count*3 + 0x40;\r
 670         if (offs+3 > movie_size) {\r
 671                 free(movie_data);\r
 672                 movie_data = 0;\r
 673                 strcpy(noticeMsg, "END OF MOVIE.");\r
 674                 printf("END OF MOVIE.\n");\r
 675                 gettimeofday(&noticeMsgTime, 0);\r
 676         } else {\r
 677                 // MXYZ SACB RLDU\r
 678                 PicoPad[0] = ~movie_data[offs]   & 0x8f; // ! SCBA RLDU\r
 679                 if(!(movie_data[offs]   & 0x10)) PicoPad[0] |= 0x40; // A\r
 680                 if(!(movie_data[offs]   & 0x20)) PicoPad[0] |= 0x10; // B\r
 681                 if(!(movie_data[offs]   & 0x40)) PicoPad[0] |= 0x20; // A\r
 682                 PicoPad[1] = ~movie_data[offs+1] & 0x8f; // ! SCBA RLDU\r
 683                 if(!(movie_data[offs+1] & 0x10)) PicoPad[1] |= 0x40; // A\r
 684                 if(!(movie_data[offs+1] & 0x20)) PicoPad[1] |= 0x10; // B\r
 685                 if(!(movie_data[offs+1] & 0x40)) PicoPad[1] |= 0x20; // A\r
 686                 PicoPad[0] |= (~movie_data[offs+2] & 0x0A) << 8; // ! MZYX\r
 687                 if(!(movie_data[offs+2] & 0x01)) PicoPad[0] |= 0x0400; // X\r
 688                 if(!(movie_data[offs+2] & 0x04)) PicoPad[0] |= 0x0100; // Z\r
 689                 PicoPad[1] |= (~movie_data[offs+2] & 0xA0) << 4; // ! MZYX\r
 690                 if(!(movie_data[offs+2] & 0x10)) PicoPad[1] |= 0x0400; // X\r
 691                 if(!(movie_data[offs+2] & 0x40)) PicoPad[1] |= 0x0100; // Z\r
 692         }\r
 693 }\r
 694 \r
 695 \r
 696 static void updateKeys(void)\r
 697 {\r
 698         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 699         static unsigned long prevEvents = 0;\r
 700         int joy, i;\r
 701 \r
 702         keys = gp2x_joystick_read(0);\r
 703         if (keys & GP2X_SELECT) {\r
 704                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 705                 // wait until select is released, so menu would not resume game\r
 706                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 707         }\r
 708 \r
 709         keys &= CONFIGURABLE_KEYS;\r
 710 \r
 711         for (i = 0; i < 32; i++)\r
 712         {\r
 713                 if (keys & (1 << i)) {\r
 714                         int pl, acts = currentConfig.KeyBinds[i];\r
 715                         if (!acts) continue;\r
 716                         pl = (acts >> 16) & 1;\r
 717                         if (combo_keys & (1 << i)) {\r
 718                                 int u = i+1, acts_c = acts & combo_acts;\r
 719                                 // let's try to find the other one\r
 720                                 if (acts_c)\r
 721                                         for (; u < 32; u++)\r
 722                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 723                                                         allActions[pl] |= acts_c;\r
 724                                                         keys &= ~((1 << i) | (1 << u));\r
 725                                                         break;\r
 726                                                 }\r
 727                                 // add non-combo actions if combo ones were not found\r
 728                                 if (!acts_c || u == 32)\r
 729                                         allActions[pl] |= acts & ~combo_acts;\r
 730                         } else {\r
 731                                 allActions[pl] |= acts;\r
 732                         }\r
 733                 }\r
 734         }\r
 735 \r
 736         // add joy inputs\r
 737         if (num_of_joys > 0)\r
 738         {\r
 739                 gp2x_usbjoy_update();\r
 740                 for (joy = 0; joy < num_of_joys; joy++) {\r
 741                         int keys = gp2x_usbjoy_check2(joy);\r
 742                         for (i = 0; i < 32; i++) {\r
 743                                 if (keys & (1 << i)) {\r
 744                                         int acts = currentConfig.JoyBinds[joy][i];\r
 745                                         int pl = (acts >> 16) & 1;\r
 746                                         allActions[pl] |= acts;\r
 747                                 }\r
 748                         }\r
 749                 }\r
 750         }\r
 751 \r
 752         PicoPad[0] = (unsigned short) allActions[0];\r
 753         PicoPad[1] = (unsigned short) allActions[1];\r
 754 \r
 755         events = (allActions[0] | allActions[1]) >> 16;\r
 756 \r
 757         // volume is treated in special way and triggered every frame\r
 758         if(events & 0x6000) {\r
 759                 int vol = currentConfig.volume;\r
 760                 if (events & 0x2000) {\r
 761                         if (vol < 90) vol++;\r
 762                 } else {\r
 763                         if (vol >  0) vol--;\r
 764                 }\r
 765                 gp2x_sound_volume(vol, vol);\r
 766                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 767                 gettimeofday(&noticeMsgTime, 0);\r
 768                 currentConfig.volume = vol;\r
 769         }\r
 770 \r
 771         events &= ~prevEvents;\r
 772         if (events) RunEvents(events);\r
 773         if (movie_data) updateMovie();\r
 774 \r
 775         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 776 }\r
 777 \r
 778 static int snd_excess_add = 0, snd_excess_cnt = 0; // hack\r
 779 \r
 780 static void updateSound(void)\r
 781 {\r
 782         int len = (PicoOpt&8)?PsndLen*2:PsndLen;\r
 783 \r
 784         snd_excess_cnt += snd_excess_add;\r
 785         if (snd_excess_cnt >= 0x10000) {\r
 786                 snd_excess_cnt -= 0x10000;\r
 787                 if (PicoOpt&8) {\r
 788                         PsndOut[len]   = PsndOut[len-2];\r
 789                         PsndOut[len+1] = PsndOut[len-1];\r
 790                         len+=2;\r
 791                 } else {\r
 792                         PsndOut[len]   = PsndOut[len-1];\r
 793                         len++;\r
 794                 }\r
 795         }\r
 796 \r
 797         gp2x_sound_write(PsndOut, len<<1);\r
 798 }\r
 799 \r
 800 \r
 801 static void SkipFrame(int do_sound)\r
 802 {\r
 803         void *sndbuff_tmp = 0;\r
 804         if (PsndOut && !do_sound) {\r
 805                 sndbuff_tmp = PsndOut;\r
 806                 PsndOut = 0;\r
 807         }\r
 808 \r
 809         PicoSkipFrame=1;\r
 810         PicoFrame();\r
 811         PicoSkipFrame=0;\r
 812 \r
 813         if (sndbuff_tmp && !do_sound) {\r
 814                 PsndOut = sndbuff_tmp;\r
 815         }\r
 816 }\r
 817 \r
 818 \r
 819 static void simpleWait(int thissec, int lim_time)\r
 820 {\r
 821         struct timeval tval;\r
 822 \r
 823         spend_cycles(1024);\r
 824         gettimeofday(&tval, 0);\r
 825         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 826 \r
 827         while(tval.tv_usec < lim_time)\r
 828         {\r
 829                 spend_cycles(1024);\r
 830                 gettimeofday(&tval, 0);\r
 831                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 832         }\r
 833 }\r
 834 \r
 835 \r
 836 void emu_Loop(void)\r
 837 {\r
 838         static int gp2x_old_clock = 200;\r
 839         static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
 840         char fpsbuff[24]; // fps count c string\r
 841         struct timeval tval; // timing\r
 842         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
 843         int target_fps, target_frametime, lim_time, i;\r
 844         char *notice = 0;\r
 845 \r
 846         printf("entered emu_Loop()\n");\r
 847 \r
 848         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 849                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 850                 set_FCLK(currentConfig.CPUclock);\r
 851                 gp2x_old_clock = currentConfig.CPUclock;\r
 852                 printf(" done\n");\r
 853         }\r
 854 \r
 855         if (gp2x_old_gamma != currentConfig.gamma) {\r
 856                 set_gamma(currentConfig.gamma);\r
 857                 gp2x_old_gamma = currentConfig.gamma;\r
 858                 printf("updated gamma to %i\n", currentConfig.gamma);\r
 859         }\r
 860 \r
 861         fpsbuff[0] = 0;\r
 862 \r
 863         // make sure we are in correct mode\r
 864         vidResetMode();\r
 865         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 866         find_combos();\r
 867 \r
 868         // pal/ntsc might have changed, reset related stuff\r
 869         target_fps = Pico.m.pal ? 50 : 60;\r
 870         target_frametime = 1000000/target_fps;\r
 871         reset_timing = 1;\r
 872 \r
 873         // prepare sound stuff\r
 874         if(currentConfig.EmuOpt & 4) {\r
 875                 if(PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old || crashed_940) {\r
 876                         /* if 940 is turned off, we need it to be put back to sleep */\r
 877                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
 878                                 Reset940(1);\r
 879                                 Pause940(1);\r
 880                         }\r
 881                         sound_rerate();\r
 882                 }\r
 883                 //excess_samples = PsndRate - PsndLen*target_fps;\r
 884                 snd_excess_cnt = 0;\r
 885                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 886                 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
 887                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 888                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 889                 PicoWriteSound = updateSound;\r
 890                 PsndOut = calloc((PicoOpt&8) ? (PsndLen*4+4) : (PsndLen*2+2), 1);\r
 891                 PsndRate_old = PsndRate;\r
 892                 PsndLen_real = PsndLen;\r
 893                 PicoOpt_old  = PicoOpt;\r
 894                 pal_old = Pico.m.pal;\r
 895         } else {\r
 896                 PsndOut = 0;\r
 897         }\r
 898 \r
 899         // loop?\r
 900         while (engineState == PGS_Running)\r
 901         {\r
 902                 int modes;\r
 903 \r
 904                 gettimeofday(&tval, 0);\r
 905                 if(reset_timing) {\r
 906                         reset_timing = 0;\r
 907                         thissec = tval.tv_sec;\r
 908                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
 909                 }\r
 910 \r
 911                 // show notice message?\r
 912                 if(noticeMsgTime.tv_sec) {\r
 913                         static int noticeMsgSum;\r
 914                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 915                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 916                                 clearArea(0);\r
 917                                 notice = 0;\r
 918                         } else {\r
 919                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 920                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 921                                 notice = noticeMsg;\r
 922                         }\r
 923                 }\r
 924 \r
 925                 // check for mode changes\r
 926                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 927                 if (modes != oldmodes) {\r
 928                         int scalex = 320;\r
 929                         osd_fps_x = OSD_FPS_X;\r
 930                         if (modes & 4) {\r
 931                                 vidCpyM2 = vidCpyM2_40col;\r
 932                         } else {\r
 933                                 if (PicoOpt & 0x100) {\r
 934                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 935                                         scalex = 256;\r
 936                                         osd_fps_x = OSD_FPS_X - 64;\r
 937                                 } else {\r
 938                                         vidCpyM2 = vidCpyM2_32col;\r
 939                                 }\r
 940                         }\r
 941                         gp2x_video_RGB_setscaling(scalex, 240);\r
 942                         oldmodes = modes;\r
 943                         clearArea(1);\r
 944                 }\r
 945 \r
 946                 // second changed?\r
 947                 if(thissec != tval.tv_sec) {\r
 948 #ifdef BENCHMARK\r
 949                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 950                         if(++bench == 10) {\r
 951                                 bench = 0;\r
 952                                 bench_fps_s = bench_fps;\r
 953                                 bf[bfp++ & 3] = bench_fps;\r
 954                                 bench_fps = 0;\r
 955                         }\r
 956                         bench_fps += frames_shown;\r
 957                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 958 #else\r
 959                         if(currentConfig.EmuOpt & 2)\r
 960                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 961 #endif\r
 962                         thissec = tval.tv_sec;\r
 963 \r
 964                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 965                                 frames_done = frames_shown = 0;\r
 966                         } else {\r
 967                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 968                                 // when second changes, but we don't want buffer to starve.\r
 969                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
 970                                         updateKeys();\r
 971                                         SkipFrame(1); frames_done++;\r
 972                                 }\r
 973 \r
 974                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
 975                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
 976                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
 977                         }\r
 978                 }\r
 979 \r
 980                 lim_time = (frames_done+1) * target_frametime;\r
 981                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
 982                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 983                                 updateKeys();\r
 984                                 SkipFrame(1); frames_done++;\r
 985                                 if (PsndOut) { // do framelimitting if sound is enabled\r
 986                                         gettimeofday(&tval, 0);\r
 987                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 988                                         if(tval.tv_usec < lim_time) { // we are too fast\r
 989                                                 simpleWait(thissec, lim_time);\r
 990                                         }\r
 991                                 }\r
 992                                 lim_time += target_frametime;\r
 993                         }\r
 994                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
 995                         // no time left for this frame - skip\r
 996                         updateKeys();\r
 997                         SkipFrame(tval.tv_usec < lim_time+target_frametime); frames_done++;\r
 998                         continue;\r
 999                 }\r
1000 \r
1001                 updateKeys();\r
1002                 PicoFrame();\r
1003 \r
1004 #if 0\r
1005 if (Pico.m.frame_count == 31563) {\r
1006         FILE *f;\r
1007         f = fopen("ram_p.bin", "wb");\r
1008         if (!f) { printf("!f\n"); exit(1); }\r
1009         fwrite(Pico.ram, 1, 0x10000, f);\r
1010         fclose(f);\r
1011         exit(0);\r
1012 }\r
1013 #endif\r
1014 #if 0\r
1015                 // debug\r
1016                 {\r
1017                         #define BYTE unsigned char\r
1018                         #define WORD unsigned short\r
1019                         struct\r
1020                         {\r
1021                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
1022                                 BYTE ColorMapType;    /* 01h  Color map type */\r
1023                                 BYTE ImageType;       /* 02h  Image type code */\r
1024                                 WORD CMapStart;       /* 03h  Color map origin */\r
1025                                 WORD CMapLength;      /* 05h  Color map length */\r
1026                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
1027                                 WORD XOffset;         /* 08h  X origin of image */\r
1028                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
1029                                 WORD Width;           /* 0Ch  Width of image */\r
1030                                 WORD Height;          /* 0Eh  Height of image */\r
1031                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
1032                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
1033                         } __attribute__((packed)) TGAHEAD;\r
1034                         static unsigned short oldscr[320*240];\r
1035                         FILE *f; char name[128]; int i;\r
1036 \r
1037                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
1038                         TGAHEAD.ImageType = 2;\r
1039                         TGAHEAD.Width = 320;\r
1040                         TGAHEAD.Height = 240;\r
1041                         TGAHEAD.PixelDepth = 16;\r
1042                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
1043 \r
1044                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
1045 \r
1046                         for (i = 0; i < 320*240; i++)\r
1047                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
1048                         if (i < 320*240)\r
1049                         {\r
1050                                 for (i = 0; i < 320*240; i++)\r
1051                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
1052                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1053                                 f = fopen(name, "wb");\r
1054                                 if (!f) { printf("!f\n"); exit(1); }\r
1055                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
1056                                 fwrite(oldscr, 1, 320*240*2, f);\r
1057                                 fclose(f);\r
1058                         }\r
1059                 }\r
1060 #endif\r
1061 \r
1062                 // check time\r
1063                 gettimeofday(&tval, 0);\r
1064                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1065 \r
1066                 // sleep if we are still too fast\r
1067                 if(PsndOut != 0 || currentConfig.Frameskip < 0)\r
1068                 {\r
1069                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1070                         gettimeofday(&tval, 0);\r
1071                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1072                         if(tval.tv_usec < lim_time)\r
1073                         {\r
1074                                 // we are too fast\r
1075                                 simpleWait(thissec, lim_time);\r
1076                         }\r
1077                 }\r
1078 \r
1079                 blit(fpsbuff, notice);\r
1080 \r
1081                 frames_done++; frames_shown++;\r
1082         }\r
1083 \r
1084         // save SRAM\r
1085         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1086                 emu_SaveLoadGame(0, 1);\r
1087                 SRam.changed = 0;\r
1088         }\r
1089 \r
1090         if (PsndOut != 0) {\r
1091                 free(PsndOut);\r
1092                 PsndOut = 0;\r
1093         }\r
1094 }\r
1095 \r
1096 \r
1097 void emu_ResetGame(void)\r
1098 {\r
1099         PicoReset(0);\r
1100         reset_timing = 1;\r
1101 }\r
1102 \r
1103 \r
1104 size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
1105 {\r
1106         return gzread(file, p, _n);\r
1107 }\r
1108 \r
1109 \r
1110 size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
1111 {\r
1112         return gzwrite(file, p, _n);\r
1113 }\r
1114 \r
1115 typedef unsigned int (*STATE_SL_FUNC)(void *, unsigned int, unsigned int, void *);\r
1116 \r
1117 int emu_SaveLoadGame(int load, int sram)\r
1118 {\r
1119         int ret = 0;\r
1120         char saveFname[512];\r
1121 \r
1122         // make save filename\r
1123         romfname_ext(saveFname, "");\r
1124         if(sram) strcat(saveFname, ".srm");\r
1125         else {\r
1126                 if(state_slot > 0 && state_slot < 10) sprintf(saveFname, "%s.%i", saveFname, state_slot);\r
1127                 strcat(saveFname, ".mds");\r
1128         }\r
1129 \r
1130         printf("saveLoad (%i, %i): %s\n", load, sram, saveFname);\r
1131 \r
1132         if(sram) {\r
1133                 FILE *sramFile;\r
1134                 int sram_size = SRam.end-SRam.start+1;\r
1135                 if(SRam.reg_back & 4) sram_size=0x2000;\r
1136                 if(!SRam.data) return 0; // SRam forcefully disabled for this game\r
1137                 if(load) {\r
1138                         sramFile = fopen(saveFname, "rb");\r
1139                         if(!sramFile) return -1;\r
1140                         fread(SRam.data, 1, sram_size, sramFile);\r
1141                         fclose(sramFile);\r
1142                 } else {\r
1143                         // sram save needs some special processing\r
1144                         // see if we have anything to save\r
1145                         for(; sram_size > 0; sram_size--)\r
1146                                 if(SRam.data[sram_size-1]) break;\r
1147 \r
1148                         if(sram_size) {\r
1149                                 sramFile = fopen(saveFname, "wb");\r
1150                                 ret = fwrite(SRam.data, 1, sram_size, sramFile);\r
1151                                 ret = (ret != sram_size) ? -1 : 0;\r
1152                                 fclose(sramFile);\r
1153                                 sync();\r
1154                         }\r
1155                 }\r
1156                 return ret;\r
1157         } else {\r
1158                 void *PmovFile = NULL;\r
1159                 // try gzip first\r
1160                 if(currentConfig.EmuOpt & 8) {\r
1161                         strcat(saveFname, ".gz");\r
1162                         if( (PmovFile = gzopen(saveFname, load ? "rb" : "wb")) ) {\r
1163                                 areaRead  = gzRead2;\r
1164                                 areaWrite = gzWrite2;\r
1165                                 if(!load) gzsetparams(PmovFile, 9, Z_DEFAULT_STRATEGY);\r
1166                         } else\r
1167                                 saveFname[strlen(saveFname)-3] = 0;\r
1168                 }\r
1169                 if(!PmovFile) { // gzip failed or was disabled\r
1170                         if( (PmovFile = fopen(saveFname, load ? "rb" : "wb")) ) {\r
1171                                 areaRead  = (STATE_SL_FUNC) fread;\r
1172                                 areaWrite = (STATE_SL_FUNC) fwrite;\r
1173                         }\r
1174                 }\r
1175                 if(PmovFile) {\r
1176                         PmovState(load ? 6 : 5, PmovFile);\r
1177                         strcpy(noticeMsg, load ? "GAME LOADED  " : "GAME SAVED   ");\r
1178                         if(areaRead == gzRead2)\r
1179                                  gzclose(PmovFile);\r
1180                         else fclose ((FILE *) PmovFile);\r
1181                         PmovFile = 0;\r
1182                         if (!load) sync();\r
1183                         else Pico.m.dirtyPal=1;\r
1184                 } else {\r
1185                         strcpy(noticeMsg, load ? "LOAD FAILED  " : "SAVE FAILED  ");\r
1186                         ret = -1;\r
1187                 }\r
1188 \r
1189                 gettimeofday(&noticeMsgTime, 0);\r
1190                 return ret;\r
1191         }\r
1192 }\r