gp2x/emu.c

   1 // (c) Copyright 2006-2007 notaz, All rights reserved.\r
   2 // Free for non-commercial use.\r
   3 \r
   4 // For commercial use, separate licencing terms must be obtained.\r
   5 \r
   6 #include <stdio.h>\r
   7 #include <stdlib.h>\r
   8 #include <sys/time.h>\r
   9 #include <sys/stat.h>\r
  10 #include <sys/types.h>\r
  11 #include <linux/limits.h>\r
  12 #include <ctype.h>\r
  13 #include <unistd.h>\r
  14 \r
  15 #include <stdarg.h>\r
  16 \r
  17 #include "emu.h"\r
  18 #include "gp2x.h"\r
  19 #include "usbjoy.h"\r
  20 #include "menu.h"\r
  21 #include "../common/arm_utils.h"\r
  22 #include "../common/fonts.h"\r
  23 #include "../common/emu.h"\r
  24 #include "cpuctrl.h"\r
  25 \r
  26 #include <Pico/PicoInt.h>\r
  27 #include <Pico/Patch.h>\r
  28 #include <zlib/zlib.h>\r
  29 \r
  30 //#define PFRAMES\r
  31 \r
  32 #ifdef BENCHMARK\r
  33 #define OSD_FPS_X 220\r
  34 #else\r
  35 #define OSD_FPS_X 260\r
  36 #endif\r
  37 \r
  38 \r
  39 int engineState;\r
  40 int select_exits = 0;\r
  41 \r
  42 char romFileName[PATH_MAX];\r
  43 \r
  44 extern int crashed_940;\r
  45 \r
  46 static short sndBuffer[2*44100/50];\r
  47 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  48 static int osd_fps_x;\r
  49 static int combo_keys = 0, combo_acts = 0;      // keys and actions which need button combos\r
  50 static int gp2x_old_gamma = 100;\r
  51 char noticeMsg[64];                     // notice msg to draw\r
  52 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  53 int reset_timing = 0;\r
  54 \r
  55 static void emu_msg_cb(const char *msg);\r
  56 static void emu_msg_tray_open(void);\r
  57 \r
  58 \r
  59 void emu_noticeMsgUpdated(void)\r
  60 {\r
  61         gettimeofday(&noticeMsgTime, 0);\r
  62 }\r
  63 \r
  64 void emu_getMainDir(char *dst, int len)\r
  65 {\r
  66         extern char **g_argv;\r
  67         int j;\r
  68 \r
  69         strncpy(dst, g_argv[0], len);\r
  70         len -= 32; // reserve\r
  71         if (len < 0) len = 0;\r
  72         dst[len] = 0;\r
  73         for (j = strlen(dst); j > 0; j--)\r
  74                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  75 }\r
  76 \r
  77 void emu_Init(void)\r
  78 {\r
  79         // make temp buffer for alt renderer\r
  80         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  81         if (!PicoDraw2FB)\r
  82         {\r
  83                 printf("PicoDraw2FB == 0\n");\r
  84         }\r
  85 \r
  86         // make dirs for saves, cfgs, etc.\r
  87         mkdir("mds", 0777);\r
  88         mkdir("srm", 0777);\r
  89         mkdir("brm", 0777);\r
  90         mkdir("cfg", 0777);\r
  91 \r
  92         PicoInit();\r
  93         PicoMessage = emu_msg_cb;\r
  94         PicoMCDopenTray = emu_msg_tray_open;\r
  95         PicoMCDcloseTray = menu_loop_tray;\r
  96 }\r
  97 \r
  98 \r
  99 static void find_combos(void)\r
 100 {\r
 101         int act, u;\r
 102 \r
 103         // find out which keys and actions are combos\r
 104         combo_keys = combo_acts = 0;\r
 105         for (act = 0; act < 32; act++)\r
 106         {\r
 107                 int keyc = 0, keyc2 = 0;\r
 108                 if (act == 16 || act == 17) continue; // player2 flag\r
 109                 if (act > 17)\r
 110                 {\r
 111                         for (u = 0; u < 32; u++)\r
 112                                 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 113                 }\r
 114                 else\r
 115                 {\r
 116                         for (u = 0; u < 32; u++)\r
 117                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 0 && // pl. 1\r
 118                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc++;\r
 119                         for (u = 0; u < 32; u++)\r
 120                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 1 && // pl. 2\r
 121                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc2++;\r
 122                         if (keyc2 > keyc) keyc = keyc2;\r
 123                 }\r
 124                 if (keyc > 1)\r
 125                 {\r
 126                         // loop again and mark those keys and actions as combo\r
 127                         for (u = 0; u < 32; u++)\r
 128                         {\r
 129                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 130                                         combo_keys |= 1 << u;\r
 131                                         combo_acts |= 1 << act;\r
 132                                 }\r
 133                         }\r
 134                 }\r
 135         }\r
 136 \r
 137         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 138 }\r
 139 \r
 140 \r
 141 static void scaling_update(void)\r
 142 {\r
 143         PicoOpt &= ~0x4100;\r
 144         switch (currentConfig.scaling) {\r
 145                 default: break; // off\r
 146                 case 1:  // hw hor\r
 147                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 148                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 149         }\r
 150 }\r
 151 \r
 152 \r
 153 void emu_Deinit(void)\r
 154 {\r
 155         // save SRAM\r
 156         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 157                 emu_SaveLoadGame(0, 1);\r
 158                 SRam.changed = 0;\r
 159         }\r
 160 \r
 161         if (!(currentConfig.EmuOpt & 0x20)) {\r
 162                 FILE *f = fopen(PicoConfigFile, "r+b");\r
 163                 if (!f) emu_WriteConfig(0);\r
 164                 else {\r
 165                         // if we already have config, reload it, except last ROM\r
 166                         fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);\r
 167                         fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);\r
 168                         fseek(f, 0, SEEK_SET);\r
 169                         fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
 170                         fflush(f);\r
 171                         fclose(f);\r
 172 #ifndef NO_SYNC\r
 173                         sync();\r
 174 #endif\r
 175                 }\r
 176         }\r
 177 \r
 178         free(PicoDraw2FB);\r
 179 \r
 180         PicoExit();\r
 181 \r
 182         // restore gamma\r
 183         if (gp2x_old_gamma != 100)\r
 184                 set_gamma(100, 0);\r
 185 }\r
 186 \r
 187 void emu_setDefaultConfig(void)\r
 188 {\r
 189         memset(&currentConfig, 0, sizeof(currentConfig));\r
 190         currentConfig.lastRomFile[0] = 0;\r
 191         currentConfig.EmuOpt  = 0x1f | 0x600; // | confirm_save, cd_leds\r
 192         currentConfig.PicoOpt = 0x0f | 0xe00; // | use_940, cd_pcm, cd_cdda\r
 193         currentConfig.PsndRate = 22050; // 44100;\r
 194         currentConfig.PicoRegion = 0; // auto\r
 195         currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 196         currentConfig.Frameskip = -1; // auto\r
 197         currentConfig.CPUclock = 200;\r
 198         currentConfig.volume = 50;\r
 199         currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 200         currentConfig.KeyBinds[ 4] = 1<<1;\r
 201         currentConfig.KeyBinds[ 2] = 1<<2;\r
 202         currentConfig.KeyBinds[ 6] = 1<<3;\r
 203         currentConfig.KeyBinds[14] = 1<<4;\r
 204         currentConfig.KeyBinds[13] = 1<<5;\r
 205         currentConfig.KeyBinds[12] = 1<<6;\r
 206         currentConfig.KeyBinds[ 8] = 1<<7;\r
 207         currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
 208         currentConfig.KeyBinds[10] = 1<<27; // save state\r
 209         currentConfig.KeyBinds[11] = 1<<28; // load state\r
 210         currentConfig.KeyBinds[23] = 1<<29; // vol up\r
 211         currentConfig.KeyBinds[22] = 1<<30; // vol down\r
 212         currentConfig.gamma = 100;\r
 213         currentConfig.PicoCDBuffers = 64;\r
 214         currentConfig.scaling = 0;\r
 215 }\r
 216 \r
 217 void osd_text(int x, int y, const char *text)\r
 218 {\r
 219         int len = strlen(text)*8;\r
 220 \r
 221         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 222                 int *p, i, h;\r
 223                 x &= ~3; // align x\r
 224                 len = (len+3) >> 2;\r
 225                 for (h = 0; h < 8; h++) {\r
 226                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 227                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 228                 }\r
 229                 emu_textOut8(x, y, text);\r
 230         } else {\r
 231                 int *p, i, h;\r
 232                 x &= ~1; // align x\r
 233                 len = (len+1) >> 1;\r
 234                 for (h = 0; h < 8; h++) {\r
 235                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 236                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 237                 }\r
 238                 emu_textOut16(x, y, text);\r
 239         }\r
 240 }\r
 241 \r
 242 static void cd_leds(void)\r
 243 {\r
 244 //      static\r
 245         int old_reg;\r
 246 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 247         old_reg = Pico_mcd->s68k_regs[0];\r
 248 \r
 249         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 250                 // 8-bit modes\r
 251                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 252                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 253                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 254                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 255                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 256                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 257                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 258                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 259         } else {\r
 260                 // 16-bit modes\r
 261                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 262                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 263                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 264                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 265                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 266                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 267         }\r
 268 }\r
 269 \r
 270 static int EmuScan16(unsigned int num, void *sdata)\r
 271 {\r
 272         if (!(Pico.video.reg[1]&8)) num += 8;\r
 273         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 274 \r
 275         return 0;\r
 276 }\r
 277 \r
 278 static int EmuScan8(unsigned int num, void *sdata)\r
 279 {\r
 280         if (!(Pico.video.reg[1]&8)) num += 8;\r
 281         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 282 \r
 283         return 0;\r
 284 }\r
 285 \r
 286 int localPal[0x100];\r
 287 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 288 \r
 289 static void blit(const char *fps, const char *notice)\r
 290 {\r
 291         int emu_opt = currentConfig.EmuOpt;\r
 292 \r
 293         if (PicoOpt&0x10) {\r
 294                 // 8bit fast renderer\r
 295                 if (Pico.m.dirtyPal) {\r
 296                         Pico.m.dirtyPal = 0;\r
 297                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 298                         // feed new palette to our device\r
 299                         gp2x_video_setpalette(localPal, 0x40);\r
 300                 }\r
 301                 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 302         } else if (!(emu_opt&0x80)) {\r
 303                 // 8bit accurate renderer\r
 304                 if (Pico.m.dirtyPal) {\r
 305                         Pico.m.dirtyPal = 0;\r
 306                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 307                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 308                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 309                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 310                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 311                                 localPal[0xc0] = 0x0000c000;\r
 312                                 localPal[0xd0] = 0x00c00000;\r
 313                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 314                                 localPal[0xf0] = 0x00ffffff;\r
 315                                 gp2x_video_setpalette(localPal, 0x100);\r
 316                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 317                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 318                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 319                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 320                                 gp2x_video_setpalette(localPal, 0xc0);\r
 321                         } else {\r
 322                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 323                                 gp2x_video_setpalette(localPal, 0x40);\r
 324                         }\r
 325                 }\r
 326         }\r
 327 \r
 328         if (notice || (emu_opt & 2)) {\r
 329                 int h = 232;\r
 330                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
 331                 if (notice) osd_text(4, h, notice);\r
 332                 if (emu_opt & 2)\r
 333                         osd_text(osd_fps_x, h, fps);\r
 334         }\r
 335         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 336                 cd_leds();\r
 337 \r
 338         //gp2x_video_wait_vsync();\r
 339         gp2x_video_flip();\r
 340 \r
 341         if (!(PicoOpt&0x10)) {\r
 342                 if (!(Pico.video.reg[1]&8)) {\r
 343                         if (currentConfig.EmuOpt&0x80) {\r
 344                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 345                         } else {\r
 346                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 347                         }\r
 348                 } else {\r
 349                         DrawLineDest = gp2x_screen;\r
 350                 }\r
 351         }\r
 352 }\r
 353 \r
 354 \r
 355 // clears whole screen or just the notice area (in all buffers)\r
 356 static void clearArea(int full)\r
 357 {\r
 358         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 359                 // 8-bit renderers\r
 360                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 361                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 362         } else {\r
 363                 // 16bit accurate renderer\r
 364                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 365                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 366         }\r
 367 }\r
 368 \r
 369 \r
 370 static void vidResetMode(void)\r
 371 {\r
 372         if (PicoOpt&0x10) {\r
 373                 gp2x_video_changemode(8);\r
 374         } else if (currentConfig.EmuOpt&0x80) {\r
 375                 gp2x_video_changemode(16);\r
 376                 PicoDrawSetColorFormat(1);\r
 377                 PicoScan = EmuScan16;\r
 378                 PicoScan(0, 0);\r
 379         } else {\r
 380                 gp2x_video_changemode(8);\r
 381                 PicoDrawSetColorFormat(2);\r
 382                 PicoScan = EmuScan8;\r
 383                 PicoScan(0, 0);\r
 384         }\r
 385         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 386                 // setup pal for 8-bit modes\r
 387                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 388                 localPal[0xd0] = 0x00c00000;\r
 389                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 390                 localPal[0xf0] = 0x00ffffff;\r
 391                 gp2x_video_setpalette(localPal, 0x100);\r
 392                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 393                 gp2x_video_flip();\r
 394         }\r
 395         Pico.m.dirtyPal = 1;\r
 396         // reset scaling\r
 397         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 398              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 399         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 400 }\r
 401 \r
 402 \r
 403 static void emu_msg_cb(const char *msg)\r
 404 {\r
 405         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 406                 // 8-bit renderers\r
 407                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 408                 osd_text(4, 232, msg);\r
 409                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
 410         } else {\r
 411                 // 16bit accurate renderer\r
 412                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 413                 osd_text(4, 232, msg);\r
 414                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
 415         }\r
 416         gettimeofday(&noticeMsgTime, 0);\r
 417         noticeMsgTime.tv_sec -= 2;\r
 418 \r
 419         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 420         reset_timing = 1;\r
 421 }\r
 422 \r
 423 static void emu_state_cb(const char *str)\r
 424 {\r
 425         clearArea(0);\r
 426         blit("", str);\r
 427 }\r
 428 \r
 429 static void emu_msg_tray_open(void)\r
 430 {\r
 431         strcpy(noticeMsg, "CD tray opened");\r
 432         gettimeofday(&noticeMsgTime, 0);\r
 433 }\r
 434 \r
 435 static void RunEvents(unsigned int which)\r
 436 {\r
 437         if(which & 0x1800) { // save or load (but not both)\r
 438                 int do_it = 1;\r
 439                 if ( emu_checkSaveFile(state_slot) &&\r
 440                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 441                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 442                         unsigned long keys;\r
 443                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 444                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 445                                 usleep(50*1024);\r
 446                         if (keys & GP2X_X) do_it = 0;\r
 447                         clearArea(0);\r
 448                 }\r
 449                 if (do_it) {\r
 450                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 451                         PicoStateProgressCB = emu_state_cb;\r
 452                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 453                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 454                         PicoStateProgressCB = NULL;\r
 455                 }\r
 456 \r
 457                 reset_timing = 1;\r
 458         }\r
 459         if(which & 0x0400) { // switch renderer\r
 460                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 461                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 462                 else   currentConfig.EmuOpt &= ~0x80;\r
 463 \r
 464                 vidResetMode();\r
 465 \r
 466                 if (PicoOpt&0x10) {\r
 467                         strcpy(noticeMsg, " 8bit fast renderer");\r
 468                 } else if (currentConfig.EmuOpt&0x80) {\r
 469                         strcpy(noticeMsg, "16bit accurate renderer");\r
 470                 } else {\r
 471                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 472                 }\r
 473 \r
 474                 gettimeofday(&noticeMsgTime, 0);\r
 475         }\r
 476         if(which & 0x0300) {\r
 477                 if(which&0x0200) {\r
 478                         state_slot -= 1;\r
 479                         if(state_slot < 0) state_slot = 9;\r
 480                 } else {\r
 481                         state_slot += 1;\r
 482                         if(state_slot > 9) state_slot = 0;\r
 483                 }\r
 484                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 485                 gettimeofday(&noticeMsgTime, 0);\r
 486         }\r
 487         if(which & 0x0080) {\r
 488                 engineState = PGS_Menu;\r
 489         }\r
 490 }\r
 491 \r
 492 \r
 493 static void updateKeys(void)\r
 494 {\r
 495         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 496         static unsigned long prevEvents = 0;\r
 497         int joy, i;\r
 498 \r
 499         keys = gp2x_joystick_read(0);\r
 500         if (keys & GP2X_SELECT) {\r
 501                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 502                 // wait until select is released, so menu would not resume game\r
 503                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 504         }\r
 505 \r
 506         keys &= CONFIGURABLE_KEYS;\r
 507 \r
 508         for (i = 0; i < 32; i++)\r
 509         {\r
 510                 if (keys & (1 << i)) {\r
 511                         int pl, acts = currentConfig.KeyBinds[i];\r
 512                         if (!acts) continue;\r
 513                         pl = (acts >> 16) & 1;\r
 514                         if (combo_keys & (1 << i)) {\r
 515                                 int u = i+1, acts_c = acts & combo_acts;\r
 516                                 // let's try to find the other one\r
 517                                 if (acts_c)\r
 518                                         for (; u < 32; u++)\r
 519                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 520                                                         allActions[pl] |= acts_c;\r
 521                                                         keys &= ~((1 << i) | (1 << u));\r
 522                                                         break;\r
 523                                                 }\r
 524                                 // add non-combo actions if combo ones were not found\r
 525                                 if (!acts_c || u == 32)\r
 526                                         allActions[pl] |= acts & ~combo_acts;\r
 527                         } else {\r
 528                                 allActions[pl] |= acts;\r
 529                         }\r
 530                 }\r
 531         }\r
 532 \r
 533         // add joy inputs\r
 534         if (num_of_joys > 0)\r
 535         {\r
 536                 gp2x_usbjoy_update();\r
 537                 for (joy = 0; joy < num_of_joys; joy++) {\r
 538                         int keys = gp2x_usbjoy_check2(joy);\r
 539                         for (i = 0; i < 32; i++) {\r
 540                                 if (keys & (1 << i)) {\r
 541                                         int acts = currentConfig.JoyBinds[joy][i];\r
 542                                         int pl = (acts >> 16) & 1;\r
 543                                         allActions[pl] |= acts;\r
 544                                 }\r
 545                         }\r
 546                 }\r
 547         }\r
 548 \r
 549         PicoPad[0] = (unsigned short) allActions[0];\r
 550         PicoPad[1] = (unsigned short) allActions[1];\r
 551 \r
 552         events = (allActions[0] | allActions[1]) >> 16;\r
 553 \r
 554         // volume is treated in special way and triggered every frame\r
 555         if(events & 0x6000) {\r
 556                 int vol = currentConfig.volume;\r
 557                 if (events & 0x2000) {\r
 558                         if (vol < 99) vol++;\r
 559                 } else {\r
 560                         if (vol >  0) vol--;\r
 561                 }\r
 562                 gp2x_sound_volume(vol, vol);\r
 563                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 564                 gettimeofday(&noticeMsgTime, 0);\r
 565                 currentConfig.volume = vol;\r
 566         }\r
 567 \r
 568         events &= ~prevEvents;\r
 569         if (events) RunEvents(events);\r
 570         if (movie_data) emu_updateMovie();\r
 571 \r
 572         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 573 }\r
 574 \r
 575 \r
 576 static void updateSound(int len)\r
 577 {\r
 578         if (PicoOpt&8) len<<=1;\r
 579 \r
 580         /* avoid writing audio when lagging behind to prevent audio lag */\r
 581         if (PicoSkipFrame != 2)\r
 582                 gp2x_sound_write(PsndOut, len<<1);\r
 583 }\r
 584 \r
 585 \r
 586 static void SkipFrame(int do_audio)\r
 587 {\r
 588         PicoSkipFrame=do_audio ? 1 : 2;\r
 589         PicoFrame();\r
 590         PicoSkipFrame=0;\r
 591 }\r
 592 \r
 593 \r
 594 void emu_forcedFrame(void)\r
 595 {\r
 596         int po_old = PicoOpt;\r
 597         int eo_old = currentConfig.EmuOpt;\r
 598 \r
 599         PicoOpt &= ~0x0010;\r
 600         PicoOpt |=  0x4080; // soft_scale | acc_sprites\r
 601         currentConfig.EmuOpt |= 0x80;\r
 602 \r
 603         //vidResetMode();\r
 604         PicoDrawSetColorFormat(1);\r
 605         PicoScan = EmuScan16;\r
 606         PicoScan(0, 0);\r
 607         Pico.m.dirtyPal = 1;\r
 608         PicoFrameDrawOnly();\r
 609 \r
 610 /*\r
 611         if (!(Pico.video.reg[12]&1)) {\r
 612                 vidCpyM2 = vidCpyM2_32col;\r
 613                 clearArea(1);\r
 614         } else  vidCpyM2 = vidCpyM2_40col;\r
 615 \r
 616         vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 617         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 618         gp2x_video_setpalette(localPal, 0x40);\r
 619 */\r
 620         PicoOpt = po_old;\r
 621         currentConfig.EmuOpt = eo_old;\r
 622 }\r
 623 \r
 624 static void simpleWait(int thissec, int lim_time)\r
 625 {\r
 626         struct timeval tval;\r
 627 \r
 628         spend_cycles(1024);\r
 629         gettimeofday(&tval, 0);\r
 630         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 631 \r
 632         while(tval.tv_usec < lim_time)\r
 633         {\r
 634                 spend_cycles(1024);\r
 635                 gettimeofday(&tval, 0);\r
 636                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 637         }\r
 638 }\r
 639 \r
 640 \r
 641 void emu_Loop(void)\r
 642 {\r
 643         static int gp2x_old_clock = 200;\r
 644         static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;\r
 645         char fpsbuff[24]; // fps count c string\r
 646         struct timeval tval; // timing\r
 647         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
 648         int target_fps, target_frametime, lim_time, vsync_offset, i;\r
 649         char *notice = 0;\r
 650 \r
 651         printf("entered emu_Loop()\n");\r
 652 \r
 653         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 654                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 655                 set_FCLK(currentConfig.CPUclock);\r
 656                 gp2x_old_clock = currentConfig.CPUclock;\r
 657                 printf(" done\n");\r
 658         }\r
 659 \r
 660         if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
 661                 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 662                 gp2x_old_gamma = currentConfig.gamma;\r
 663                 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 664         }\r
 665 \r
 666         if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
 667                 if (currentConfig.EmuOpt&0x2000)\r
 668                      set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
 669                 else unset_LCD_custom_rate();\r
 670         }\r
 671 \r
 672         EmuOpt_old = currentConfig.EmuOpt;\r
 673         fpsbuff[0] = 0;\r
 674 \r
 675         // make sure we are in correct mode\r
 676         vidResetMode();\r
 677         scaling_update();\r
 678         Pico.m.dirtyPal = 1;\r
 679         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 680         find_combos();\r
 681 \r
 682         // pal/ntsc might have changed, reset related stuff\r
 683         target_fps = Pico.m.pal ? 50 : 60;\r
 684         target_frametime = 1000000/target_fps;\r
 685         reset_timing = 1;\r
 686 \r
 687         // prepare sound stuff\r
 688         if(currentConfig.EmuOpt & 4) {\r
 689                 int snd_excess_add;\r
 690                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
 691                                 ((PicoOpt&0x200) && crashed_940)) {\r
 692                         /* if 940 is turned off, we need it to be put back to sleep */\r
 693                         if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
 694                                 Reset940(1, 2);\r
 695                                 Pause940(1);\r
 696                         }\r
 697                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 698                 }\r
 699                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 700                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 701                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 702                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 703                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 704                 PicoWriteSound = updateSound;\r
 705                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 706                 PsndOut = sndBuffer;\r
 707                 PsndRate_old = PsndRate;\r
 708                 PicoOpt_old  = PicoOpt;\r
 709                 pal_old = Pico.m.pal;\r
 710         } else {\r
 711                 PsndOut = 0;\r
 712         }\r
 713 \r
 714         // prepare CD buffer\r
 715         if (PicoMCD & 1) PicoCDBufferInit();\r
 716 \r
 717         // calc vsync offset to sync timing code with vsync\r
 718         if (currentConfig.EmuOpt&0x2000) {\r
 719                 gettimeofday(&tval, 0);\r
 720                 gp2x_video_wait_vsync();\r
 721                 gettimeofday(&tval, 0);\r
 722                 vsync_offset = tval.tv_usec;\r
 723                 while (vsync_offset >= target_frametime)\r
 724                         vsync_offset -= target_frametime;\r
 725                 if (!vsync_offset) vsync_offset++;\r
 726                 printf("vsync_offset: %i\n", vsync_offset);\r
 727         } else\r
 728                 vsync_offset = 0;\r
 729 \r
 730         // loop?\r
 731         while (engineState == PGS_Running)\r
 732         {\r
 733                 int modes;\r
 734 \r
 735                 gettimeofday(&tval, 0);\r
 736                 if(reset_timing) {\r
 737                         reset_timing = 0;\r
 738                         thissec = tval.tv_sec;\r
 739                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
 740                 }\r
 741 \r
 742                 // show notice message?\r
 743                 if(noticeMsgTime.tv_sec) {\r
 744                         static int noticeMsgSum;\r
 745                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 746                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 747                                 clearArea(0);\r
 748                                 notice = 0;\r
 749                         } else {\r
 750                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 751                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 752                                 notice = noticeMsg;\r
 753                         }\r
 754                 }\r
 755 \r
 756                 // check for mode changes\r
 757                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 758                 if (modes != oldmodes) {\r
 759                         int scalex = 320;\r
 760                         osd_fps_x = OSD_FPS_X;\r
 761                         if (modes & 4) {\r
 762                                 vidCpyM2 = vidCpyM2_40col;\r
 763                         } else {\r
 764                                 if (PicoOpt & 0x100) {\r
 765                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 766                                         scalex = 256;\r
 767                                         osd_fps_x = OSD_FPS_X - 64;\r
 768                                 } else {\r
 769                                         vidCpyM2 = vidCpyM2_32col;\r
 770                                 }\r
 771                         }\r
 772                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 773                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 774                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 775                         oldmodes = modes;\r
 776                         clearArea(1);\r
 777                 }\r
 778 \r
 779                 // second changed?\r
 780                 if(thissec != tval.tv_sec) {\r
 781 #ifdef BENCHMARK\r
 782                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 783                         if(++bench == 10) {\r
 784                                 bench = 0;\r
 785                                 bench_fps_s = bench_fps;\r
 786                                 bf[bfp++ & 3] = bench_fps;\r
 787                                 bench_fps = 0;\r
 788                         }\r
 789                         bench_fps += frames_shown;\r
 790                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 791 #else\r
 792                         if(currentConfig.EmuOpt & 2)\r
 793                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 794 #endif\r
 795                         thissec = tval.tv_sec;\r
 796 \r
 797                         if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 798                                 frames_done = frames_shown = 0;\r
 799                         } else {\r
 800                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 801                                 // when second changes, but we don't want buffer to starve.\r
 802                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
 803                                         updateKeys();\r
 804                                         SkipFrame(1); frames_done++;\r
 805                                 }\r
 806 \r
 807                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
 808                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
 809                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
 810                         }\r
 811                 }\r
 812 #ifdef PFRAMES\r
 813                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 814 #endif\r
 815 \r
 816                 lim_time = (frames_done+1) * target_frametime + vsync_offset;\r
 817                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
 818                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 819                                 updateKeys();\r
 820                                 SkipFrame(1); frames_done++;\r
 821                                 if (PsndOut) { // do framelimitting if sound is enabled\r
 822                                         gettimeofday(&tval, 0);\r
 823                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 824                                         if(tval.tv_usec < lim_time) { // we are too fast\r
 825                                                 simpleWait(thissec, lim_time);\r
 826                                         }\r
 827                                 }\r
 828                                 lim_time += target_frametime;\r
 829                         }\r
 830                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
 831                         // no time left for this frame - skip\r
 832                         if (tval.tv_usec - lim_time >= 300000) {\r
 833                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 834                                  * try to recover by resetting timing... */\r
 835                                 reset_timing = 1;\r
 836                                 continue;\r
 837                         }\r
 838                         updateKeys();\r
 839                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); frames_done++;\r
 840                         continue;\r
 841                 }\r
 842 \r
 843                 updateKeys();\r
 844                 PicoFrame();\r
 845 \r
 846 #if 0\r
 847 if (Pico.m.frame_count == 31563) {\r
 848         FILE *f;\r
 849         f = fopen("ram_p.bin", "wb");\r
 850         if (!f) { printf("!f\n"); exit(1); }\r
 851         fwrite(Pico.ram, 1, 0x10000, f);\r
 852         fclose(f);\r
 853         exit(0);\r
 854 }\r
 855 #endif\r
 856 #if 0\r
 857                 // debug\r
 858                 {\r
 859                         #define BYTE unsigned char\r
 860                         #define WORD unsigned short\r
 861                         struct\r
 862                         {\r
 863                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
 864                                 BYTE ColorMapType;    /* 01h  Color map type */\r
 865                                 BYTE ImageType;       /* 02h  Image type code */\r
 866                                 WORD CMapStart;       /* 03h  Color map origin */\r
 867                                 WORD CMapLength;      /* 05h  Color map length */\r
 868                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
 869                                 WORD XOffset;         /* 08h  X origin of image */\r
 870                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
 871                                 WORD Width;           /* 0Ch  Width of image */\r
 872                                 WORD Height;          /* 0Eh  Height of image */\r
 873                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
 874                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
 875                         } __attribute__((packed)) TGAHEAD;\r
 876                         static unsigned short oldscr[320*240];\r
 877                         FILE *f; char name[128]; int i;\r
 878 \r
 879                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
 880                         TGAHEAD.ImageType = 2;\r
 881                         TGAHEAD.Width = 320;\r
 882                         TGAHEAD.Height = 240;\r
 883                         TGAHEAD.PixelDepth = 16;\r
 884                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
 885 \r
 886                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
 887 \r
 888                         for (i = 0; i < 320*240; i++)\r
 889                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
 890                         if (i < 320*240)\r
 891                         {\r
 892                                 for (i = 0; i < 320*240; i++)\r
 893                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
 894                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
 895                                 f = fopen(name, "wb");\r
 896                                 if (!f) { printf("!f\n"); exit(1); }\r
 897                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
 898                                 fwrite(oldscr, 1, 320*240*2, f);\r
 899                                 fclose(f);\r
 900                         }\r
 901                 }\r
 902 #endif\r
 903 \r
 904                 // check time\r
 905                 gettimeofday(&tval, 0);\r
 906                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 907 \r
 908                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
 909                         reset_timing = 1;\r
 910                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
 911                 {\r
 912                         // sleep or vsync if we are still too fast\r
 913                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
 914                         if(tval.tv_usec < lim_time)\r
 915                         {\r
 916                                 // we are too fast\r
 917                                 if (vsync_offset) {\r
 918                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
 919                                                 simpleWait(thissec, lim_time - target_frametime/4);\r
 920                                         gp2x_video_wait_vsync();\r
 921                                 } else {\r
 922                                         simpleWait(thissec, lim_time);\r
 923                                 }\r
 924                         }\r
 925                 }\r
 926 \r
 927                 blit(fpsbuff, notice);\r
 928 \r
 929                 frames_done++; frames_shown++;\r
 930         }\r
 931 \r
 932 \r
 933         if (PicoMCD & 1) PicoCDBufferFree();\r
 934 \r
 935         // save SRAM\r
 936         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 937                 emu_state_cb("Writing SRAM/BRAM..");\r
 938                 emu_SaveLoadGame(0, 1);\r
 939                 SRam.changed = 0;\r
 940         }\r
 941 \r
 942         // if in 8bit mode, generate 16bit image for menu background\r
 943         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
 944                 emu_forcedFrame();\r
 945 }\r
 946 \r
 947 \r
 948 void emu_ResetGame(void)\r
 949 {\r
 950         PicoReset(0);\r
 951         reset_timing = 1;\r
 952 }\r
 953 \r
 954 \r