pandora/emu.c

   1 // (c) Copyright 2006-2008 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 "../gp2x/emu.h"\r
  18 #include "../gp2x/usbjoy.h"\r
  19 #include "../gp2x/menu.h"\r
  20 #include "../common/arm_utils.h"\r
  21 #include "../common/fonts.h"\r
  22 #include "../common/emu.h"\r
  23 #include "../common/config.h"\r
  24 #include "../common/common.h"\r
  25 #include "asm_utils.h"\r
  26 \r
  27 #include <Pico/PicoInt.h>\r
  28 #include <Pico/Patch.h>\r
  29 #include <Pico/sound/mix.h>\r
  30 #include <zlib/zlib.h>\r
  31 \r
  32 //#define PFRAMES\r
  33 #define BENCHMARK\r
  34 //#define USE_320_SCREEN 1\r
  35 \r
  36 #ifdef BENCHMARK\r
  37 #define OSD_FPS_X (800-200)\r
  38 #else\r
  39 #define OSD_FPS_X (800-120)\r
  40 #endif\r
  41 \r
  42 \r
  43 int engineState;\r
  44 int select_exits = 0;\r
  45 \r
  46 char romFileName[PATH_MAX];\r
  47 \r
  48 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  49 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  50 static int osd_fps_x;\r
  51 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  52 int reset_timing = 0;\r
  53 \r
  54 #define PICO_PEN_ADJUST_X 4\r
  55 #define PICO_PEN_ADJUST_Y 2\r
  56 static int pico_pen_x = SCREEN_WIDTH/2, pico_pen_y = 240/2;\r
  57 \r
  58 static void emu_msg_cb(const char *msg);\r
  59 static void emu_msg_tray_open(void);\r
  60 \r
  61 \r
  62 void emu_noticeMsgUpdated(void)\r
  63 {\r
  64         gettimeofday(&noticeMsgTime, 0);\r
  65 }\r
  66 \r
  67 int emu_getMainDir(char *dst, int len)\r
  68 {\r
  69         extern char **g_argv;\r
  70         int j;\r
  71 \r
  72         strncpy(dst, g_argv[0], len);\r
  73         len -= 32; // reserve\r
  74         if (len < 0) len = 0;\r
  75         dst[len] = 0;\r
  76         for (j = strlen(dst); j > 0; j--)\r
  77                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  78 \r
  79         return j + 1;\r
  80 }\r
  81 \r
  82 void emu_Init(void)\r
  83 {\r
  84         // make temp buffer for alt renderer\r
  85         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  86         if (!PicoDraw2FB)\r
  87         {\r
  88                 printf("PicoDraw2FB == 0\n");\r
  89         }\r
  90 \r
  91         // make dirs for saves, cfgs, etc.\r
  92         mkdir("mds", 0777);\r
  93         mkdir("srm", 0777);\r
  94         mkdir("brm", 0777);\r
  95         mkdir("cfg", 0777);\r
  96 \r
  97         PicoInit();\r
  98         PicoMessage = emu_msg_cb;\r
  99         PicoMCDopenTray = emu_msg_tray_open;\r
 100         PicoMCDcloseTray = menu_loop_tray;\r
 101 }\r
 102 \r
 103 \r
 104 static void scaling_update(void)\r
 105 {\r
 106         PicoOpt &= ~0x4100;\r
 107         switch (currentConfig.scaling) {\r
 108                 default: break; // off\r
 109                 case 1:  // hw hor\r
 110                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 111                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 112         }\r
 113 }\r
 114 \r
 115 \r
 116 void emu_Deinit(void)\r
 117 {\r
 118         // save SRAM\r
 119         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 120                 emu_SaveLoadGame(0, 1);\r
 121                 SRam.changed = 0;\r
 122         }\r
 123 \r
 124         if (!(currentConfig.EmuOpt & 0x20)) {\r
 125                 config_writelrom(PicoConfigFile);\r
 126 #ifndef NO_SYNC\r
 127                 sync();\r
 128 #endif\r
 129         }\r
 130 \r
 131         free(PicoDraw2FB);\r
 132 \r
 133         PicoExit();\r
 134 }\r
 135 \r
 136 void emu_prepareDefaultConfig(void)\r
 137 {\r
 138         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 139         defaultConfig.EmuOpt    = 0x8f | 0x00600; // | <- confirm_save, cd_leds\r
 140         defaultConfig.s_PicoOpt  = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC;\r
 141         defaultConfig.s_PicoOpt |= POPT_ACC_SPRITES|POPT_EN_MCD_GFX;\r
 142         defaultConfig.s_PicoOpt &= ~POPT_EN_SVP_DRC; // crashes :(\r
 143         defaultConfig.EmuOpt    &= ~8; // no save gzip\r
 144         defaultConfig.s_PsndRate = 44100;\r
 145         defaultConfig.s_PicoRegion = 0;\r
 146         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 147         defaultConfig.s_PicoCDBuffers = 0;\r
 148         defaultConfig.Frameskip = 0;\r
 149         defaultConfig.CPUclock = 200;\r
 150         defaultConfig.volume = 50;\r
 151         defaultConfig.scaling = 0;\r
 152         defaultConfig.turbo_rate = 15;\r
 153 }\r
 154 \r
 155 static void textOut16(int x, int y, const char *text)\r
 156 {\r
 157         int i,l,len=strlen(text);\r
 158         unsigned int *screen = (unsigned int *)((unsigned short *)SCREEN_BUFFER + (x&~1) + y*SCREEN_WIDTH);\r
 159 \r
 160         for (i = 0; i < len; i++)\r
 161         {\r
 162                 for (l=0;l<16;)\r
 163                 {\r
 164                         unsigned char fd = fontdata8x8[((text[i])*8)+l/2];\r
 165                         unsigned int *d = &screen[l*SCREEN_WIDTH/2];\r
 166                         if (fd&0x80) d[0]=0xffffffff;\r
 167                         if (fd&0x40) d[1]=0xffffffff;\r
 168                         if (fd&0x20) d[2]=0xffffffff;\r
 169                         if (fd&0x10) d[3]=0xffffffff;\r
 170                         if (fd&0x08) d[4]=0xffffffff;\r
 171                         if (fd&0x04) d[5]=0xffffffff;\r
 172                         if (fd&0x02) d[6]=0xffffffff;\r
 173                         if (fd&0x01) d[7]=0xffffffff;\r
 174                         l++; d = &screen[l*SCREEN_WIDTH/2];\r
 175                         if (fd&0x80) d[0]=0xffffffff;\r
 176                         if (fd&0x40) d[1]=0xffffffff;\r
 177                         if (fd&0x20) d[2]=0xffffffff;\r
 178                         if (fd&0x10) d[3]=0xffffffff;\r
 179                         if (fd&0x08) d[4]=0xffffffff;\r
 180                         if (fd&0x04) d[5]=0xffffffff;\r
 181                         if (fd&0x02) d[6]=0xffffffff;\r
 182                         if (fd&0x01) d[7]=0xffffffff;\r
 183                         l++;\r
 184                 }\r
 185                 screen += 8;\r
 186         }\r
 187 }\r
 188 \r
 189 \r
 190 void osd_text(int x, int y, const char *text)\r
 191 {\r
 192         int len = strlen(text)*8;\r
 193 \r
 194         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 195                 int *p, i, h;\r
 196                 x &= ~3; // align x\r
 197                 len = (len+3) >> 2;\r
 198                 for (h = 0; h < 8; h++) {\r
 199                         p = (int *) ((unsigned char *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 200                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 201                 }\r
 202                 emu_textOut8(x, y, text);\r
 203         } else {\r
 204                 int *p, i, h;\r
 205                 x &= ~1; // align x\r
 206                 len++;\r
 207                 for (h = 0; h < 16; h++) {\r
 208                         p = (int *) ((unsigned short *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 209                         for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
 210                 }\r
 211                 textOut16(x, y, text);\r
 212         }\r
 213 }\r
 214 \r
 215 static void draw_cd_leds(void)\r
 216 {\r
 217 //      static\r
 218         int old_reg;\r
 219 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 220         old_reg = Pico_mcd->s68k_regs[0];\r
 221 \r
 222         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 223                 // 8-bit modes\r
 224                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 225                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 226                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+ 4) =\r
 227                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+ 4) =\r
 228                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+ 4) = col_g;\r
 229                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+12) =\r
 230                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+12) =\r
 231                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+12) = col_r;\r
 232         } else {\r
 233                 // 16-bit modes\r
 234                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + SCREEN_WIDTH*2+4);\r
 235                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 236                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 237                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
 238                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
 239                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 240         }\r
 241 }\r
 242 \r
 243 static void draw_pico_ptr(void)\r
 244 {\r
 245         unsigned short *p = (unsigned short *)gp2x_screen;\r
 246 \r
 247         // only if pen enabled and for 16bit modes\r
 248         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 249 \r
 250         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 251                 p += 32;\r
 252 \r
 253         p += SCREEN_WIDTH * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 254         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 255         p[0]   ^= 0xffff;\r
 256         p[319] ^= 0xffff;\r
 257         p[320] ^= 0xffff;\r
 258         p[321] ^= 0xffff;\r
 259         p[640] ^= 0xffff;\r
 260 }\r
 261 \r
 262 #ifdef USE_320_SCREEN\r
 263 \r
 264 static int EmuScanBegin16(unsigned int num)\r
 265 {\r
 266         if (!(Pico.video.reg[1]&8)) num += 8;\r
 267         DrawLineDest = (unsigned short *)gp2x_screen + num*800 + 800/2 - 320/2;\r
 268         //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
 269         //DrawLineDest = (unsigned short *)gp2x_screen + num*w;\r
 270 \r
 271         return 0;\r
 272 }\r
 273 \r
 274 #else // USE_320_SCREEN\r
 275 \r
 276 static int EmuScanEnd16(unsigned int num)\r
 277 {\r
 278         unsigned char  *ps=HighCol+8;\r
 279         unsigned short *pd;\r
 280         unsigned short *pal=HighPal;\r
 281         int sh = Pico.video.reg[0xC]&8;\r
 282         int len, mask = 0xff;\r
 283 \r
 284         if (!(Pico.video.reg[1]&8)) num += 8;\r
 285         pd=(unsigned short *)gp2x_screen + num*800*2 + 800/2 - 320*2/2;\r
 286 \r
 287         if (Pico.m.dirtyPal)\r
 288                 PicoDoHighPal555(sh);\r
 289 \r
 290         if (Pico.video.reg[12]&1) {\r
 291                 len = 320;\r
 292         } else {\r
 293                 pd += 32*2;\r
 294                 len = 256;\r
 295         }\r
 296 \r
 297         if (!sh && (rendstatus & PDRAW_ACC_SPRITES))\r
 298                 mask=0x3f; // accurate sprites, upper bits are priority stuff\r
 299 \r
 300 #if 1\r
 301         clut_line(pd, ps, pal, (mask<<16) | len);\r
 302 #else\r
 303         for (; len > 0; len--)\r
 304         {\r
 305                 unsigned int p = pal[*ps++ & mask];\r
 306                 p |= p << 16;\r
 307                 *(unsigned int *)pd = p;\r
 308                 *(unsigned int *)(&pd[800]) = p;\r
 309                 pd += 2;\r
 310         }\r
 311 #endif\r
 312 \r
 313         return 0;\r
 314 }\r
 315 \r
 316 #endif // USE_320_SCREEN\r
 317 \r
 318 static int EmuScanBegin8(unsigned int num)\r
 319 {\r
 320         if (!(Pico.video.reg[1]&8)) num += 8;\r
 321         DrawLineDest = (unsigned char *)  gp2x_screen + SCREEN_WIDTH * num;\r
 322 \r
 323         return 0;\r
 324 }\r
 325 \r
 326 int localPal[0x100];\r
 327 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 328 \r
 329 static void blit(const char *fps, const char *notice)\r
 330 {\r
 331         int emu_opt = currentConfig.EmuOpt;\r
 332 \r
 333         if (PicoOpt&0x10)\r
 334         {\r
 335                 // 8bit fast renderer\r
 336                 if (Pico.m.dirtyPal) {\r
 337                         Pico.m.dirtyPal = 0;\r
 338                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 339                         // feed new palette to our device\r
 340                         gp2x_video_setpalette(localPal, 0x40);\r
 341                 }\r
 342                 // a hack for VR\r
 343                 if (PicoRead16Hook == PicoSVPRead16)\r
 344                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 345                 // do actual copy\r
 346                 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 347         }\r
 348         else if (!(emu_opt&0x80))\r
 349         {\r
 350                 // 8bit accurate renderer\r
 351                 if (Pico.m.dirtyPal)\r
 352                 {\r
 353                         int pallen = 0xc0;\r
 354                         Pico.m.dirtyPal = 0;\r
 355                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 356                         {\r
 357                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 358                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 359                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 360                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 361                                 pallen = 0x100;\r
 362                         }\r
 363                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 364                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 365                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 366                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 367                                 pallen = 0xc0;\r
 368                         }\r
 369                         else {\r
 370                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 371                                 memcpy32(localPal+0x80, localPal, 0x40);\r
 372                         }\r
 373                         if (pallen > 0xc0) {\r
 374                                 localPal[0xc0] = 0x0000c000;\r
 375                                 localPal[0xd0] = 0x00c00000;\r
 376                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 377                                 localPal[0xf0] = 0x00ffffff;\r
 378                         }\r
 379                         gp2x_video_setpalette(localPal, pallen);\r
 380                 }\r
 381         }\r
 382 \r
 383         if (notice || (emu_opt & 2)) {\r
 384                 int h = SCREEN_HEIGHT-16;\r
 385                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 16;\r
 386                 if (notice) osd_text(4, h, notice);\r
 387                 if (emu_opt & 2)\r
 388                         osd_text(osd_fps_x, h, fps);\r
 389         }\r
 390         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 391                 draw_cd_leds();\r
 392         if (PicoAHW & PAHW_PICO)\r
 393                 draw_pico_ptr();\r
 394 {\r
 395 //static int u=0;\r
 396 //memset((char *)gp2x_screen+800*471*2, (u++)>>1, 800*9*2);\r
 397 }\r
 398 \r
 399         //gp2x_video_wait_vsync();\r
 400         gp2x_video_flip();\r
 401 }\r
 402 \r
 403 \r
 404 // clears whole screen or just the notice area (in all buffers)\r
 405 static void clearArea(int full)\r
 406 {\r
 407         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 408                 // 8-bit renderers\r
 409                 if (full) gp2x_memset_all_buffers(0, 0xe0, SCREEN_WIDTH*240);\r
 410                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*232, 0xe0, SCREEN_WIDTH*8);\r
 411         } else {\r
 412                 // 16bit accurate renderer\r
 413                 if (full) gp2x_memset_all_buffers(0, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 414                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 415         }\r
 416 }\r
 417 \r
 418 \r
 419 static void vidResetMode(void)\r
 420 {\r
 421         if (PicoOpt&0x10) {\r
 422                 gp2x_video_changemode(8);\r
 423         } else if (currentConfig.EmuOpt&0x80) {\r
 424                 gp2x_video_changemode(16);\r
 425 #ifdef USE_320_SCREEN\r
 426                 PicoDrawSetColorFormat(1);\r
 427                 PicoScanBegin = EmuScanBegin16;\r
 428 #else\r
 429                 PicoDrawSetColorFormat(-1);\r
 430                 PicoScanEnd = EmuScanEnd16;\r
 431 #endif\r
 432         } else {\r
 433                 gp2x_video_changemode(8);\r
 434                 PicoDrawSetColorFormat(2);\r
 435                 PicoScanBegin = EmuScanBegin8;\r
 436         }\r
 437         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 438                 // setup pal for 8-bit modes\r
 439                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 440                 localPal[0xd0] = 0x00c00000;\r
 441                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 442                 localPal[0xf0] = 0x00ffffff;\r
 443                 gp2x_video_setpalette(localPal, 0x100);\r
 444                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 445                 gp2x_video_flip();\r
 446         }\r
 447         Pico.m.dirtyPal = 1;\r
 448         // reset scaling\r
 449         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 450              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 451         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 452 }\r
 453 \r
 454 \r
 455 static void emu_msg_cb(const char *msg)\r
 456 {\r
 457         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 458                 // 8-bit renderers\r
 459                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16), 0xe0, SCREEN_WIDTH*16);\r
 460                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 461                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16),\r
 462                         SCREEN_WIDTH*(SCREEN_HEIGHT-16), SCREEN_WIDTH*16);\r
 463         } else {\r
 464                 // 16bit accurate renderer\r
 465                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 466                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 467                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2,\r
 468                         SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, SCREEN_WIDTH*16*2);\r
 469         }\r
 470         gettimeofday(&noticeMsgTime, 0);\r
 471         noticeMsgTime.tv_sec -= 2;\r
 472 \r
 473         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 474         reset_timing = 1;\r
 475 }\r
 476 \r
 477 static void emu_state_cb(const char *str)\r
 478 {\r
 479         clearArea(0);\r
 480         blit("", str);\r
 481 }\r
 482 \r
 483 static void emu_msg_tray_open(void)\r
 484 {\r
 485         strcpy(noticeMsg, "CD tray opened");\r
 486         gettimeofday(&noticeMsgTime, 0);\r
 487 }\r
 488 \r
 489 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 490 {\r
 491         int ret, px, py, lim_x;\r
 492         static int pdown_frames = 0;\r
 493 \r
 494         emu_RunEventsPico(events);\r
 495 \r
 496         if (pico_inp_mode == 0) return;\r
 497 \r
 498         // for F200\r
 499         ret = gp2x_touchpad_read(&px, &py);\r
 500         if (ret >= 0)\r
 501         {\r
 502                 if (ret > 35000)\r
 503                 {\r
 504                         if (pdown_frames++ > 5)\r
 505                                 PicoPad[0] |= 0x20;\r
 506 \r
 507                         pico_pen_x = px;\r
 508                         pico_pen_y = py;\r
 509                         if (!(Pico.video.reg[12]&1)) {\r
 510                                 pico_pen_x -= 32;\r
 511                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 512                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 513                         }\r
 514                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 515                 }\r
 516                 else\r
 517                         pdown_frames = 0;\r
 518 \r
 519                 //if (ret == 0)\r
 520                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 521         }\r
 522 \r
 523         PicoPad[0] &= ~0x0f; // release UDLR\r
 524         if (gp2x_keys & GP2X_UP)    pico_pen_y--;\r
 525         if (gp2x_keys & GP2X_DOWN)  pico_pen_y++;\r
 526         if (gp2x_keys & GP2X_LEFT)  pico_pen_x--;\r
 527         if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
 528 \r
 529         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 530         if (pico_pen_y < 8) pico_pen_y = 8;\r
 531         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 532         if (pico_pen_x < 0) pico_pen_x = 0;\r
 533         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 534 \r
 535         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 536         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 537         PicoPicohw.pen_pos[0] += 0x3c;\r
 538         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 539 }\r
 540 \r
 541 static void update_volume(int has_changed, int is_up)\r
 542 {\r
 543         static int prev_frame = 0, wait_frames = 0;\r
 544         int vol = currentConfig.volume;\r
 545 \r
 546         if (has_changed)\r
 547         {\r
 548                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 549                         wait_frames++;\r
 550                 else {\r
 551                         if (is_up) {\r
 552                                 if (vol < 99) vol++;\r
 553                         } else {\r
 554                                 if (vol >  0) vol--;\r
 555                         }\r
 556                         wait_frames = 0;\r
 557                         gp2x_sound_volume(vol, vol);\r
 558                         currentConfig.volume = vol;\r
 559                 }\r
 560                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 561                 gettimeofday(&noticeMsgTime, 0);\r
 562                 prev_frame = Pico.m.frame_count;\r
 563         }\r
 564 \r
 565         // set the right mixer func\r
 566         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 567         if (vol >= 5)\r
 568                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 569         else {\r
 570                 mix_32_to_16l_level = 5 - vol;\r
 571                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 572         }\r
 573 }\r
 574 \r
 575 static void RunEvents(unsigned int which)\r
 576 {\r
 577         if (which & 0x1800) // save or load (but not both)\r
 578         {\r
 579                 int do_it = 1;\r
 580                 if ( emu_checkSaveFile(state_slot) &&\r
 581                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 582                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 583                         unsigned long keys;\r
 584                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 585                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 586                                 usleep(50*1024);\r
 587                         if (keys & GP2X_X) do_it = 0;\r
 588                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 589                                 usleep(50*1024);\r
 590                         clearArea(0);\r
 591                 }\r
 592                 if (do_it) {\r
 593                         osd_text(4, SCREEN_HEIGHT-16, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 594                         PicoStateProgressCB = emu_state_cb;\r
 595                         gp2x_memcpy_all_buffers(gp2x_screen, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 596                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 597                         PicoStateProgressCB = NULL;\r
 598                 }\r
 599 \r
 600                 reset_timing = 1;\r
 601         }\r
 602         if (which & 0x0400) // switch renderer\r
 603         {\r
 604                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 605                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 606                 else   currentConfig.EmuOpt &= ~0x80;\r
 607 \r
 608                 vidResetMode();\r
 609 \r
 610                 if (PicoOpt&0x10) {\r
 611                         strcpy(noticeMsg, " 8bit fast renderer");\r
 612                 } else if (currentConfig.EmuOpt&0x80) {\r
 613                         strcpy(noticeMsg, "16bit accurate renderer");\r
 614                 } else {\r
 615                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 616                 }\r
 617 \r
 618                 gettimeofday(&noticeMsgTime, 0);\r
 619         }\r
 620         if (which & 0x0300)\r
 621         {\r
 622                 if(which&0x0200) {\r
 623                         state_slot -= 1;\r
 624                         if(state_slot < 0) state_slot = 9;\r
 625                 } else {\r
 626                         state_slot += 1;\r
 627                         if(state_slot > 9) state_slot = 0;\r
 628                 }\r
 629                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 630                 gettimeofday(&noticeMsgTime, 0);\r
 631         }\r
 632         if (which & 0x0080) {\r
 633                 engineState = PGS_Menu;\r
 634         }\r
 635 }\r
 636 \r
 637 static void updateKeys(void)\r
 638 {\r
 639         unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
 640         static unsigned int prevEvents = 0;\r
 641         int joy, i;\r
 642 \r
 643         keys = gp2x_joystick_read(0);\r
 644         if (keys & GP2X_SELECT) {\r
 645                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 646                 // wait until select is released, so menu would not resume game\r
 647                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 648         }\r
 649 \r
 650         keys &= CONFIGURABLE_KEYS;\r
 651         keys2 = keys;\r
 652 \r
 653         for (i = 0; i < 32; i++)\r
 654         {\r
 655                 if (keys2 & (1 << i))\r
 656                 {\r
 657                         int pl, acts = currentConfig.KeyBinds[i];\r
 658                         if (!acts) continue;\r
 659                         pl = (acts >> 16) & 1;\r
 660                         if (kb_combo_keys & (1 << i))\r
 661                         {\r
 662                                 int u = i+1, acts_c = acts & kb_combo_acts;\r
 663                                 // let's try to find the other one\r
 664                                 if (acts_c) {\r
 665                                         for (; u < 32; u++)\r
 666                                                 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
 667                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
 668                                                         keys2 &= ~((1 << i) | (1 << u));\r
 669                                                         break;\r
 670                                                 }\r
 671                                 }\r
 672                                 // add non-combo actions if combo ones were not found\r
 673                                 if (!acts_c || u == 32)\r
 674                                         allActions[pl] |= acts & ~kb_combo_acts;\r
 675                         } else {\r
 676                                 allActions[pl] |= acts;\r
 677                         }\r
 678                 }\r
 679         }\r
 680 \r
 681         // add joy inputs\r
 682         if (num_of_joys > 0)\r
 683         {\r
 684                 gp2x_usbjoy_update();\r
 685                 for (joy = 0; joy < num_of_joys; joy++) {\r
 686                         int btns = gp2x_usbjoy_check2(joy);\r
 687                         for (i = 0; i < 32; i++) {\r
 688                                 if (btns & (1 << i)) {\r
 689                                         int acts = currentConfig.JoyBinds[joy][i];\r
 690                                         int pl = (acts >> 16) & 1;\r
 691                                         allActions[pl] |= acts;\r
 692                                 }\r
 693                         }\r
 694                 }\r
 695         }\r
 696 \r
 697         PicoPad[0] = allActions[0] & 0xfff;\r
 698         PicoPad[1] = allActions[1] & 0xfff;\r
 699 \r
 700         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 701         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 702 \r
 703         events = (allActions[0] | allActions[1]) >> 16;\r
 704 \r
 705         // volume is treated in special way and triggered every frame\r
 706         if (events & 0x6000)\r
 707                 update_volume(1, events & 0x2000);\r
 708 \r
 709         if ((events ^ prevEvents) & 0x40) {\r
 710                 emu_changeFastForward(events & 0x40);\r
 711                 update_volume(0, 0);\r
 712                 reset_timing = 1;\r
 713         }\r
 714 \r
 715         events &= ~prevEvents;\r
 716 \r
 717         if (PicoAHW == PAHW_PICO)\r
 718                 RunEventsPico(events, keys);\r
 719         if (events) RunEvents(events);\r
 720         if (movie_data) emu_updateMovie();\r
 721 \r
 722         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 723 }\r
 724 \r
 725 \r
 726 static void updateSound(int len)\r
 727 {\r
 728         if (PicoOpt&8) len<<=1;\r
 729 \r
 730         /* avoid writing audio when lagging behind to prevent audio lag */\r
 731         if (PicoSkipFrame != 2)\r
 732                 gp2x_sound_write(PsndOut, len<<1);\r
 733 }\r
 734 \r
 735 \r
 736 static void SkipFrame(int do_audio)\r
 737 {\r
 738         PicoSkipFrame=do_audio ? 1 : 2;\r
 739         PicoFrame();\r
 740         PicoSkipFrame=0;\r
 741 }\r
 742 \r
 743 \r
 744 void emu_forcedFrame(int opts)\r
 745 {\r
 746         int po_old = PicoOpt;\r
 747         int eo_old = currentConfig.EmuOpt;\r
 748 \r
 749         PicoOpt &= ~0x10;\r
 750         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 751         currentConfig.EmuOpt |= 0x80;\r
 752 \r
 753         //vidResetMode();\r
 754 #ifdef USE_320_SCREEN\r
 755         PicoDrawSetColorFormat(1);\r
 756         PicoScanBegin = EmuScanBegin16;\r
 757 #else\r
 758         PicoDrawSetColorFormat(-1);\r
 759         PicoScanEnd = EmuScanEnd16;\r
 760 #endif\r
 761         Pico.m.dirtyPal = 1;\r
 762         PicoFrameDrawOnly();\r
 763 \r
 764 /*\r
 765         if (!(Pico.video.reg[12]&1)) {\r
 766                 vidCpyM2 = vidCpyM2_32col;\r
 767                 clearArea(1);\r
 768         } else  vidCpyM2 = vidCpyM2_40col;\r
 769 \r
 770         vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 771         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 772         gp2x_video_setpalette(localPal, 0x40);\r
 773 */\r
 774         PicoOpt = po_old;\r
 775         currentConfig.EmuOpt = eo_old;\r
 776 }\r
 777 \r
 778 static void simpleWait(int thissec, int lim_time)\r
 779 {\r
 780         struct timeval tval;\r
 781 \r
 782         spend_cycles(1024);\r
 783         gettimeofday(&tval, 0);\r
 784         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 785 \r
 786         while (tval.tv_usec < lim_time)\r
 787         {\r
 788                 spend_cycles(1024);\r
 789                 gettimeofday(&tval, 0);\r
 790                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 791         }\r
 792 }\r
 793 \r
 794 \r
 795 void emu_Loop(void)\r
 796 {\r
 797         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
 798         char fpsbuff[24]; // fps count c string\r
 799         struct timeval tval; // timing\r
 800         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 801         int  frames_done,  frames_shown,  thissec; // actual frames\r
 802         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 803         char *notice = 0;\r
 804 \r
 805         printf("entered emu_Loop()\n");\r
 806 \r
 807         fpsbuff[0] = 0;\r
 808 \r
 809         // make sure we are in correct mode\r
 810         vidResetMode();\r
 811         scaling_update();\r
 812         Pico.m.dirtyPal = 1;\r
 813         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 814         emu_findKeyBindCombos();\r
 815 \r
 816         // pal/ntsc might have changed, reset related stuff\r
 817         target_fps = Pico.m.pal ? 50 : 60;\r
 818         target_frametime = 1000000/target_fps;\r
 819         reset_timing = 1;\r
 820 \r
 821         // prepare sound stuff\r
 822         if (currentConfig.EmuOpt & 4)\r
 823         {\r
 824                 int snd_excess_add;\r
 825                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)\r
 826                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 827 \r
 828                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 829                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 830                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 831                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 832                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 833                 PicoWriteSound = updateSound;\r
 834                 update_volume(0, 0);\r
 835                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 836                 PsndOut = sndBuffer;\r
 837                 PsndRate_old = PsndRate;\r
 838                 PicoOpt_old  = PicoOpt;\r
 839                 pal_old = Pico.m.pal;\r
 840         } else {\r
 841                 PsndOut = NULL;\r
 842         }\r
 843 \r
 844         // prepare CD buffer\r
 845         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 846 \r
 847         // calc vsync offset to sync timing code with vsync\r
 848         if (currentConfig.EmuOpt&0x2000) {\r
 849                 gettimeofday(&tval, 0);\r
 850                 gp2x_video_wait_vsync();\r
 851                 gettimeofday(&tval, 0);\r
 852                 vsync_offset = tval.tv_usec;\r
 853                 while (vsync_offset >= target_frametime)\r
 854                         vsync_offset -= target_frametime;\r
 855                 if (!vsync_offset) vsync_offset++;\r
 856                 printf("vsync_offset: %i\n", vsync_offset);\r
 857         } else\r
 858                 vsync_offset = 0;\r
 859 \r
 860         frames_done = frames_shown = thissec =\r
 861         pframes_done = pframes_shown = pthissec = 0;\r
 862 \r
 863         // loop\r
 864         while (engineState == PGS_Running)\r
 865         {\r
 866                 int modes;\r
 867 \r
 868                 gettimeofday(&tval, 0);\r
 869                 if (reset_timing) {\r
 870                         reset_timing = 0;\r
 871                         pthissec = tval.tv_sec;\r
 872                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 873                 }\r
 874 \r
 875                 // show notice message?\r
 876                 if (noticeMsgTime.tv_sec)\r
 877                 {\r
 878                         static int noticeMsgSum;\r
 879                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 880                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 881                                 clearArea(0);\r
 882                                 notice = 0;\r
 883                         } else {\r
 884                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 885                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 886                                 notice = noticeMsg;\r
 887                         }\r
 888                 }\r
 889 \r
 890                 // check for mode changes\r
 891                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 892                 if (modes != oldmodes)\r
 893                 {\r
 894                         int scalex = SCREEN_WIDTH;\r
 895                         osd_fps_x = OSD_FPS_X;\r
 896                         if (modes & 4) {\r
 897                                 vidCpyM2 = vidCpyM2_40col;\r
 898                         } else {\r
 899                                 if (PicoOpt & 0x100) {\r
 900                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 901                                         scalex = 256;\r
 902                                         osd_fps_x = OSD_FPS_X - 64;\r
 903                                 } else {\r
 904                                         vidCpyM2 = vidCpyM2_32col;\r
 905                                 }\r
 906                         }\r
 907                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 908                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 909                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 910                         oldmodes = modes;\r
 911                         clearArea(1);\r
 912                 }\r
 913 \r
 914                 // second changed?\r
 915                 if (thissec != tval.tv_sec)\r
 916                 {\r
 917 #ifdef BENCHMARK\r
 918                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 919                         if (++bench == 4) {\r
 920                                 bench = 0;\r
 921                                 bench_fps_s = bench_fps / 4;\r
 922                                 bf[bfp++ & 3] = bench_fps / 4;\r
 923                                 bench_fps = 0;\r
 924                         }\r
 925                         bench_fps += frames_shown;\r
 926                         sprintf(fpsbuff, "%3i/%3i/%3i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 927                         printf("%s\n", fpsbuff);\r
 928 #else\r
 929                         if (currentConfig.EmuOpt & 2) {\r
 930                                 sprintf(fpsbuff, "%3i/%3i", frames_shown, frames_done);\r
 931                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 932                         }\r
 933 #endif\r
 934                         frames_shown = frames_done = 0;\r
 935                         thissec = tval.tv_sec;\r
 936                 }\r
 937 #ifdef PFRAMES\r
 938                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 939 #endif\r
 940 \r
 941                 if (pthissec != tval.tv_sec)\r
 942                 {\r
 943                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 944                                 pframes_done = pframes_shown = 0;\r
 945                         } else {\r
 946                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 947                                 // when second changes, but we don't want buffer to starve.\r
 948                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 949                                         updateKeys();\r
 950                                         SkipFrame(1); pframes_done++;\r
 951                                 }\r
 952 \r
 953                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 954                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 955                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 956                         }\r
 957                         pthissec = tval.tv_sec;\r
 958                 }\r
 959 \r
 960                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 961                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 962                 {\r
 963                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 964                                 updateKeys();\r
 965                                 SkipFrame(1); pframes_done++; frames_done++;\r
 966                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 967                                         gettimeofday(&tval, 0);\r
 968                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 969                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 970                                                 simpleWait(pthissec, lim_time);\r
 971                                         }\r
 972                                 }\r
 973                                 lim_time += target_frametime;\r
 974                         }\r
 975                 }\r
 976                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 977                 {\r
 978                         // no time left for this frame - skip\r
 979                         if (tval.tv_usec - lim_time >= 300000) {\r
 980                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 981                                  * try to recover by resetting timing... */\r
 982                                 reset_timing = 1;\r
 983                                 continue;\r
 984                         }\r
 985                         updateKeys();\r
 986                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
 987                         continue;\r
 988                 }\r
 989 \r
 990                 updateKeys();\r
 991                 PicoFrame();\r
 992 \r
 993                 // check time\r
 994                 gettimeofday(&tval, 0);\r
 995                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 996 \r
 997                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
 998                         reset_timing = 1;\r
 999 /*              else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1000                 {\r
1001                         // sleep or vsync if we are still too fast\r
1002                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1003                         if (!reset_timing && tval.tv_usec < lim_time)\r
1004                         {\r
1005                                 // we are too fast\r
1006                                 if (vsync_offset) {\r
1007                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
1008                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
1009                                         gp2x_video_wait_vsync();\r
1010                                 } else {\r
1011                                         simpleWait(pthissec, lim_time);\r
1012                                 }\r
1013                         }\r
1014                 }\r
1015 */\r
1016                 blit(fpsbuff, notice);\r
1017 \r
1018                 pframes_done++; pframes_shown++;\r
1019                  frames_done++;  frames_shown++;\r
1020         }\r
1021 \r
1022         emu_changeFastForward(0);\r
1023 \r
1024         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1025 \r
1026         // save SRAM\r
1027         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1028                 emu_state_cb("Writing SRAM/BRAM..");\r
1029                 emu_SaveLoadGame(0, 1);\r
1030                 SRam.changed = 0;\r
1031         }\r
1032 \r
1033         // if in 8bit mode, generate 16bit image for menu background\r
1034         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1035                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1036 }\r
1037 \r
1038 \r
1039 void emu_ResetGame(void)\r
1040 {\r
1041         PicoReset();\r
1042         reset_timing = 1;\r
1043 }\r
1044 \r