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/menu.h"\r
  19 #include "../common/arm_utils.h"\r
  20 #include "../common/fonts.h"\r
  21 #include "../common/emu.h"\r
  22 #include "../common/config.h"\r
  23 #include "../common/common.h"\r
  24 #include "../linux/usbjoy.h"\r
  25 #include "../linux/sndout_oss.h"\r
  26 #include "asm_utils.h"\r
  27 \r
  28 #include <pico/pico_int.h>\r
  29 #include <pico/patch.h>\r
  30 #include <pico/sound/mix.h>\r
  31 #include <zlib/zlib.h>\r
  32 \r
  33 //#define PFRAMES\r
  34 #define BENCHMARK\r
  35 //#define USE_320_SCREEN 1\r
  36 \r
  37 #ifdef BENCHMARK\r
  38 #define OSD_FPS_X (800-200)\r
  39 #else\r
  40 #define OSD_FPS_X (800-120)\r
  41 #endif\r
  42 \r
  43 \r
  44 int engineState;\r
  45 int select_exits = 0;\r
  46 \r
  47 char romFileName[PATH_MAX];\r
  48 \r
  49 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  50 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  51 static int osd_fps_x;\r
  52 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  53 int reset_timing = 0;\r
  54 \r
  55 #define PICO_PEN_ADJUST_X 4\r
  56 #define PICO_PEN_ADJUST_Y 2\r
  57 static int pico_pen_x = SCREEN_WIDTH/2, pico_pen_y = 240/2;\r
  58 \r
  59 static void emu_msg_cb(const char *msg);\r
  60 static void emu_msg_tray_open(void);\r
  61 \r
  62 \r
  63 void emu_noticeMsgUpdated(void)\r
  64 {\r
  65         gettimeofday(&noticeMsgTime, 0);\r
  66 }\r
  67 \r
  68 int emu_getMainDir(char *dst, int len)\r
  69 {\r
  70         extern char **g_argv;\r
  71         int j;\r
  72 \r
  73         strncpy(dst, g_argv[0], len);\r
  74         len -= 32; // reserve\r
  75         if (len < 0) len = 0;\r
  76         dst[len] = 0;\r
  77         for (j = strlen(dst); j > 0; j--)\r
  78                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  79 \r
  80         return j + 1;\r
  81 }\r
  82 \r
  83 void emu_Init(void)\r
  84 {\r
  85         // make temp buffer for alt renderer\r
  86         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  87         if (!PicoDraw2FB)\r
  88         {\r
  89                 printf("PicoDraw2FB == 0\n");\r
  90         }\r
  91 \r
  92         // make dirs for saves, cfgs, etc.\r
  93         mkdir("mds", 0777);\r
  94         mkdir("srm", 0777);\r
  95         mkdir("brm", 0777);\r
  96         mkdir("cfg", 0777);\r
  97 \r
  98         PicoInit();\r
  99         PicoMessage = emu_msg_cb;\r
 100         PicoMCDopenTray = emu_msg_tray_open;\r
 101         PicoMCDcloseTray = menu_loop_tray;\r
 102 }\r
 103 \r
 104 \r
 105 static void scaling_update(void)\r
 106 {\r
 107         PicoOpt &= ~0x4100;\r
 108         switch (currentConfig.scaling) {\r
 109                 default: break; // off\r
 110                 case 1:  // hw hor\r
 111                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 112                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 113         }\r
 114 }\r
 115 \r
 116 \r
 117 void emu_Deinit(void)\r
 118 {\r
 119         // save SRAM\r
 120         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 121                 emu_SaveLoadGame(0, 1);\r
 122                 SRam.changed = 0;\r
 123         }\r
 124 \r
 125         if (!(currentConfig.EmuOpt & 0x20)) {\r
 126                 config_writelrom(PicoConfigFile);\r
 127 #ifndef NO_SYNC\r
 128                 sync();\r
 129 #endif\r
 130         }\r
 131 \r
 132         free(PicoDraw2FB);\r
 133 \r
 134         PicoExit();\r
 135 }\r
 136 \r
 137 void emu_prepareDefaultConfig(void)\r
 138 {\r
 139         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 140         defaultConfig.EmuOpt    = 0x8f | 0x00600; // | <- confirm_save, cd_leds\r
 141         defaultConfig.s_PicoOpt  = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC;\r
 142         defaultConfig.s_PicoOpt |= POPT_ACC_SPRITES|POPT_EN_MCD_GFX;\r
 143 //      defaultConfig.s_PicoOpt &= ~POPT_EN_SVP_DRC; // crashes :(\r
 144         defaultConfig.EmuOpt    &= ~8; // no save gzip\r
 145         defaultConfig.s_PsndRate = 44100;\r
 146         defaultConfig.s_PicoRegion = 0;\r
 147         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 148         defaultConfig.s_PicoCDBuffers = 0;\r
 149         defaultConfig.Frameskip = 0;\r
 150         defaultConfig.CPUclock = 200;\r
 151         defaultConfig.volume = 50;\r
 152         defaultConfig.scaling = 0;\r
 153         defaultConfig.turbo_rate = 15;\r
 154 }\r
 155 \r
 156 static void textOut16(int x, int y, const char *text)\r
 157 {\r
 158         int i,l,len=strlen(text);\r
 159         unsigned int *screen = (unsigned int *)((unsigned short *)SCREEN_BUFFER + (x&~1) + y*SCREEN_WIDTH);\r
 160 \r
 161         for (i = 0; i < len; i++)\r
 162         {\r
 163                 for (l=0;l<16;)\r
 164                 {\r
 165                         unsigned char fd = fontdata8x8[((text[i])*8)+l/2];\r
 166                         unsigned int *d = &screen[l*SCREEN_WIDTH/2];\r
 167                         if (fd&0x80) d[0]=0xffffffff;\r
 168                         if (fd&0x40) d[1]=0xffffffff;\r
 169                         if (fd&0x20) d[2]=0xffffffff;\r
 170                         if (fd&0x10) d[3]=0xffffffff;\r
 171                         if (fd&0x08) d[4]=0xffffffff;\r
 172                         if (fd&0x04) d[5]=0xffffffff;\r
 173                         if (fd&0x02) d[6]=0xffffffff;\r
 174                         if (fd&0x01) d[7]=0xffffffff;\r
 175                         l++; d = &screen[l*SCREEN_WIDTH/2];\r
 176                         if (fd&0x80) d[0]=0xffffffff;\r
 177                         if (fd&0x40) d[1]=0xffffffff;\r
 178                         if (fd&0x20) d[2]=0xffffffff;\r
 179                         if (fd&0x10) d[3]=0xffffffff;\r
 180                         if (fd&0x08) d[4]=0xffffffff;\r
 181                         if (fd&0x04) d[5]=0xffffffff;\r
 182                         if (fd&0x02) d[6]=0xffffffff;\r
 183                         if (fd&0x01) d[7]=0xffffffff;\r
 184                         l++;\r
 185                 }\r
 186                 screen += 8;\r
 187         }\r
 188 }\r
 189 \r
 190 \r
 191 void osd_text(int x, int y, const char *text)\r
 192 {\r
 193         int len = strlen(text)*8;\r
 194 \r
 195         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 196                 int *p, i, h;\r
 197                 x &= ~3; // align x\r
 198                 len = (len+3) >> 2;\r
 199                 for (h = 0; h < 8; h++) {\r
 200                         p = (int *) ((unsigned char *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 201                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 202                 }\r
 203                 emu_textOut8(x, y, text);\r
 204         } else {\r
 205                 int *p, i, h;\r
 206                 x &= ~1; // align x\r
 207                 len++;\r
 208                 for (h = 0; h < 16; h++) {\r
 209                         p = (int *) ((unsigned short *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 210                         for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
 211                 }\r
 212                 textOut16(x, y, text);\r
 213         }\r
 214 }\r
 215 \r
 216 static void draw_cd_leds(void)\r
 217 {\r
 218 //      static\r
 219         int old_reg;\r
 220 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 221         old_reg = Pico_mcd->s68k_regs[0];\r
 222 \r
 223         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 224                 // 8-bit modes\r
 225                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 226                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 227                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+ 4) =\r
 228                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+ 4) =\r
 229                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+ 4) = col_g;\r
 230                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+12) =\r
 231                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+12) =\r
 232                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+12) = col_r;\r
 233         } else {\r
 234                 // 16-bit modes\r
 235                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + SCREEN_WIDTH*2+4);\r
 236                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 237                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\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; p += SCREEN_WIDTH/2 - 12/2;\r
 240                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 241         }\r
 242 }\r
 243 \r
 244 static void draw_pico_ptr(void)\r
 245 {\r
 246         unsigned short *p = (unsigned short *)gp2x_screen;\r
 247 \r
 248         // only if pen enabled and for 16bit modes\r
 249         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 250 \r
 251         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 252                 p += 32;\r
 253 \r
 254         p += SCREEN_WIDTH * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 255         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 256         p[0]   ^= 0xffff;\r
 257         p[319] ^= 0xffff;\r
 258         p[320] ^= 0xffff;\r
 259         p[321] ^= 0xffff;\r
 260         p[640] ^= 0xffff;\r
 261 }\r
 262 \r
 263 #ifdef USE_320_SCREEN\r
 264 \r
 265 static int EmuScanBegin16(unsigned int num)\r
 266 {\r
 267         if (!(Pico.video.reg[1]&8)) num += 8;\r
 268         DrawLineDest = (unsigned short *)gp2x_screen + num*800 + 800/2 - 320/2;\r
 269         //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
 270         //DrawLineDest = (unsigned short *)gp2x_screen + num*w;\r
 271 \r
 272         return 0;\r
 273 }\r
 274 \r
 275 #else // USE_320_SCREEN\r
 276 \r
 277 static int EmuScanEnd16(unsigned int num)\r
 278 {\r
 279         unsigned char  *ps=HighCol+8;\r
 280         unsigned short *pd;\r
 281         unsigned short *pal=HighPal;\r
 282         int sh = Pico.video.reg[0xC]&8;\r
 283         int len, mask = 0xff;\r
 284 \r
 285         if (!(Pico.video.reg[1]&8)) num += 8;\r
 286         pd=(unsigned short *)gp2x_screen + num*800*2 + 800/2 - 320*2/2;\r
 287 \r
 288         if (Pico.m.dirtyPal)\r
 289                 PicoDoHighPal555(sh);\r
 290 \r
 291         if (Pico.video.reg[12]&1) {\r
 292                 len = 320;\r
 293         } else {\r
 294                 pd += 32*2;\r
 295                 len = 256;\r
 296         }\r
 297 \r
 298         if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r
 299                 mask=0x3f; // messed sprites, upper bits are priority stuff\r
 300 \r
 301 #if 1\r
 302         clut_line(pd, ps, pal, (mask<<16) | len);\r
 303 #else\r
 304         for (; len > 0; len--)\r
 305         {\r
 306                 unsigned int p = pal[*ps++ & mask];\r
 307                 p |= p << 16;\r
 308                 *(unsigned int *)pd = p;\r
 309                 *(unsigned int *)(&pd[800]) = p;\r
 310                 pd += 2;\r
 311         }\r
 312 #endif\r
 313 \r
 314         return 0;\r
 315 }\r
 316 \r
 317 #endif // USE_320_SCREEN\r
 318 \r
 319 static int EmuScanBegin8(unsigned int num)\r
 320 {\r
 321         if (!(Pico.video.reg[1]&8)) num += 8;\r
 322         DrawLineDest = (unsigned char *)  gp2x_screen + SCREEN_WIDTH * num;\r
 323 \r
 324         return 0;\r
 325 }\r
 326 \r
 327 int localPal[0x100];\r
 328 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 329 \r
 330 static void blit(const char *fps, const char *notice)\r
 331 {\r
 332         int emu_opt = currentConfig.EmuOpt;\r
 333 \r
 334         if (PicoOpt&0x10)\r
 335         {\r
 336                 // 8bit fast renderer\r
 337                 if (Pico.m.dirtyPal) {\r
 338                         Pico.m.dirtyPal = 0;\r
 339                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 340                         // feed new palette to our device\r
 341                         gp2x_video_setpalette(localPal, 0x40);\r
 342                 }\r
 343                 // a hack for VR\r
 344                 if (PicoRead16Hook == PicoSVPRead16)\r
 345                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 346                 // do actual copy\r
 347                 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 348         }\r
 349         else if (!(emu_opt&0x80))\r
 350         {\r
 351                 // 8bit accurate renderer\r
 352                 if (Pico.m.dirtyPal)\r
 353                 {\r
 354                         int pallen = 0xc0;\r
 355                         Pico.m.dirtyPal = 0;\r
 356                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 357                         {\r
 358                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 359                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 360                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 361                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 362                                 pallen = 0x100;\r
 363                         }\r
 364                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 365                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 366                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 367                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 368                                 pallen = 0xc0;\r
 369                         }\r
 370                         else {\r
 371                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 372                                 memcpy32(localPal+0x80, localPal, 0x40);\r
 373                         }\r
 374                         if (pallen > 0xc0) {\r
 375                                 localPal[0xc0] = 0x0000c000;\r
 376                                 localPal[0xd0] = 0x00c00000;\r
 377                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 378                                 localPal[0xf0] = 0x00ffffff;\r
 379                         }\r
 380                         gp2x_video_setpalette(localPal, pallen);\r
 381                 }\r
 382         }\r
 383 \r
 384         if (notice || (emu_opt & 2)) {\r
 385                 int h = SCREEN_HEIGHT-16;\r
 386                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 16;\r
 387                 if (notice) osd_text(4, h, notice);\r
 388                 if (emu_opt & 2)\r
 389                         osd_text(osd_fps_x, h, fps);\r
 390         }\r
 391         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 392                 draw_cd_leds();\r
 393         if (PicoAHW & PAHW_PICO)\r
 394                 draw_pico_ptr();\r
 395 {\r
 396 //static int u=0;\r
 397 //memset((char *)gp2x_screen+800*471*2, (u++)>>1, 800*9*2);\r
 398 }\r
 399 \r
 400         //gp2x_video_wait_vsync();\r
 401         gp2x_video_flip();\r
 402 }\r
 403 \r
 404 \r
 405 // clears whole screen or just the notice area (in all buffers)\r
 406 static void clearArea(int full)\r
 407 {\r
 408         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 409                 // 8-bit renderers\r
 410                 if (full) gp2x_memset_all_buffers(0, 0xe0, SCREEN_WIDTH*240);\r
 411                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*232, 0xe0, SCREEN_WIDTH*8);\r
 412         } else {\r
 413                 // 16bit accurate renderer\r
 414                 if (full) gp2x_memset_all_buffers(0, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 415                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 416         }\r
 417 }\r
 418 \r
 419 \r
 420 static void vidResetMode(void)\r
 421 {\r
 422         if (PicoOpt&0x10) {\r
 423                 gp2x_video_changemode(8);\r
 424         } else if (currentConfig.EmuOpt&0x80) {\r
 425                 gp2x_video_changemode(16);\r
 426 #ifdef USE_320_SCREEN\r
 427                 PicoDrawSetColorFormat(1);\r
 428                 PicoScanBegin = EmuScanBegin16;\r
 429 #else\r
 430                 PicoDrawSetColorFormat(-1);\r
 431                 PicoScanEnd = EmuScanEnd16;\r
 432 #endif\r
 433         } else {\r
 434                 gp2x_video_changemode(8);\r
 435                 PicoDrawSetColorFormat(2);\r
 436                 PicoScanBegin = EmuScanBegin8;\r
 437         }\r
 438         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 439                 // setup pal for 8-bit modes\r
 440                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 441                 localPal[0xd0] = 0x00c00000;\r
 442                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 443                 localPal[0xf0] = 0x00ffffff;\r
 444                 gp2x_video_setpalette(localPal, 0x100);\r
 445                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 446                 gp2x_video_flip();\r
 447         }\r
 448         Pico.m.dirtyPal = 1;\r
 449         // reset scaling\r
 450         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 451              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 452         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 453 }\r
 454 \r
 455 \r
 456 static void emu_msg_cb(const char *msg)\r
 457 {\r
 458         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 459                 // 8-bit renderers\r
 460                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16), 0xe0, SCREEN_WIDTH*16);\r
 461                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 462                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16),\r
 463                         SCREEN_WIDTH*(SCREEN_HEIGHT-16), SCREEN_WIDTH*16);\r
 464         } else {\r
 465                 // 16bit accurate renderer\r
 466                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 467                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 468                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2,\r
 469                         SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, SCREEN_WIDTH*16*2);\r
 470         }\r
 471         gettimeofday(&noticeMsgTime, 0);\r
 472         noticeMsgTime.tv_sec -= 2;\r
 473 \r
 474         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 475         reset_timing = 1;\r
 476 }\r
 477 \r
 478 static void emu_state_cb(const char *str)\r
 479 {\r
 480         clearArea(0);\r
 481         blit("", str);\r
 482 }\r
 483 \r
 484 static void emu_msg_tray_open(void)\r
 485 {\r
 486         strcpy(noticeMsg, "CD tray opened");\r
 487         gettimeofday(&noticeMsgTime, 0);\r
 488 }\r
 489 \r
 490 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 491 {\r
 492         int ret, px, py, lim_x;\r
 493         static int pdown_frames = 0;\r
 494 \r
 495         emu_RunEventsPico(events);\r
 496 \r
 497         if (pico_inp_mode == 0) return;\r
 498 \r
 499         // for F200\r
 500         ret = gp2x_touchpad_read(&px, &py);\r
 501         if (ret >= 0)\r
 502         {\r
 503                 if (ret > 35000)\r
 504                 {\r
 505                         if (pdown_frames++ > 5)\r
 506                                 PicoPad[0] |= 0x20;\r
 507 \r
 508                         pico_pen_x = px;\r
 509                         pico_pen_y = py;\r
 510                         if (!(Pico.video.reg[12]&1)) {\r
 511                                 pico_pen_x -= 32;\r
 512                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 513                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 514                         }\r
 515                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 516                 }\r
 517                 else\r
 518                         pdown_frames = 0;\r
 519 \r
 520                 //if (ret == 0)\r
 521                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 522         }\r
 523 \r
 524         PicoPad[0] &= ~0x0f; // release UDLR\r
 525         if (gp2x_keys & GP2X_UP)    pico_pen_y--;\r
 526         if (gp2x_keys & GP2X_DOWN)  pico_pen_y++;\r
 527         if (gp2x_keys & GP2X_LEFT)  pico_pen_x--;\r
 528         if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
 529 \r
 530         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 531         if (pico_pen_y < 8) pico_pen_y = 8;\r
 532         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 533         if (pico_pen_x < 0) pico_pen_x = 0;\r
 534         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 535 \r
 536         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 537         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 538         PicoPicohw.pen_pos[0] += 0x3c;\r
 539         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 540 }\r
 541 \r
 542 static void update_volume(int has_changed, int is_up)\r
 543 {\r
 544         static int prev_frame = 0, wait_frames = 0;\r
 545         int vol = currentConfig.volume;\r
 546 \r
 547         if (has_changed)\r
 548         {\r
 549                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 550                         wait_frames++;\r
 551                 else {\r
 552                         if (is_up) {\r
 553                                 if (vol < 99) vol++;\r
 554                         } else {\r
 555                                 if (vol >  0) vol--;\r
 556                         }\r
 557                         wait_frames = 0;\r
 558                         sndout_oss_setvol(vol, vol);\r
 559                         currentConfig.volume = vol;\r
 560                 }\r
 561                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 562                 gettimeofday(&noticeMsgTime, 0);\r
 563                 prev_frame = Pico.m.frame_count;\r
 564         }\r
 565 \r
 566         // set the right mixer func\r
 567         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 568         if (vol >= 5)\r
 569                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 570         else {\r
 571                 mix_32_to_16l_level = 5 - vol;\r
 572                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 573         }\r
 574 }\r
 575 \r
 576 static void RunEvents(unsigned int which)\r
 577 {\r
 578         if (which & 0x1800) // save or load (but not both)\r
 579         {\r
 580                 int do_it = 1;\r
 581                 if ( emu_checkSaveFile(state_slot) &&\r
 582                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 583                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 584                         unsigned long keys;\r
 585                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 586                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 587                                 usleep(50*1024);\r
 588                         if (keys & GP2X_X) do_it = 0;\r
 589                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 590                                 usleep(50*1024);\r
 591                         clearArea(0);\r
 592                 }\r
 593                 if (do_it) {\r
 594                         osd_text(4, SCREEN_HEIGHT-16, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 595                         PicoStateProgressCB = emu_state_cb;\r
 596                         gp2x_memcpy_all_buffers(gp2x_screen, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 597                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 598                         PicoStateProgressCB = NULL;\r
 599                 }\r
 600 \r
 601                 reset_timing = 1;\r
 602         }\r
 603         if (which & 0x0400) // switch renderer\r
 604         {\r
 605                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 606                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 607                 else   currentConfig.EmuOpt &= ~0x80;\r
 608 \r
 609                 vidResetMode();\r
 610 \r
 611                 if (PicoOpt&0x10) {\r
 612                         strcpy(noticeMsg, " 8bit fast renderer");\r
 613                 } else if (currentConfig.EmuOpt&0x80) {\r
 614                         strcpy(noticeMsg, "16bit accurate renderer");\r
 615                 } else {\r
 616                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 617                 }\r
 618 \r
 619                 gettimeofday(&noticeMsgTime, 0);\r
 620         }\r
 621         if (which & 0x0300)\r
 622         {\r
 623                 if(which&0x0200) {\r
 624                         state_slot -= 1;\r
 625                         if(state_slot < 0) state_slot = 9;\r
 626                 } else {\r
 627                         state_slot += 1;\r
 628                         if(state_slot > 9) state_slot = 0;\r
 629                 }\r
 630                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 631                 gettimeofday(&noticeMsgTime, 0);\r
 632         }\r
 633         if (which & 0x0080) {\r
 634                 engineState = PGS_Menu;\r
 635         }\r
 636 }\r
 637 \r
 638 static void updateKeys(void)\r
 639 {\r
 640         unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
 641         static unsigned int prevEvents = 0;\r
 642         int joy, i;\r
 643 \r
 644         keys = gp2x_joystick_read(0);\r
 645         if (keys & GP2X_SELECT) {\r
 646                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 647                 // wait until select is released, so menu would not resume game\r
 648                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 649         }\r
 650 \r
 651         keys &= CONFIGURABLE_KEYS;\r
 652         keys2 = keys;\r
 653 \r
 654         for (i = 0; i < 32; i++)\r
 655         {\r
 656                 if (keys2 & (1 << i))\r
 657                 {\r
 658                         int pl, acts = currentConfig.KeyBinds[i];\r
 659                         if (!acts) continue;\r
 660                         pl = (acts >> 16) & 1;\r
 661                         if (kb_combo_keys & (1 << i))\r
 662                         {\r
 663                                 int u = i+1, acts_c = acts & kb_combo_acts;\r
 664                                 // let's try to find the other one\r
 665                                 if (acts_c) {\r
 666                                         for (; u < 32; u++)\r
 667                                                 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
 668                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
 669                                                         keys2 &= ~((1 << i) | (1 << u));\r
 670                                                         break;\r
 671                                                 }\r
 672                                 }\r
 673                                 // add non-combo actions if combo ones were not found\r
 674                                 if (!acts_c || u == 32)\r
 675                                         allActions[pl] |= acts & ~kb_combo_acts;\r
 676                         } else {\r
 677                                 allActions[pl] |= acts;\r
 678                         }\r
 679                 }\r
 680         }\r
 681 \r
 682         // add joy inputs\r
 683         if (num_of_joys > 0)\r
 684         {\r
 685                 usbjoy_update();\r
 686                 for (joy = 0; joy < num_of_joys; joy++) {\r
 687                         int btns = usbjoy_check2(joy);\r
 688                         for (i = 0; i < 32; i++) {\r
 689                                 if (btns & (1 << i)) {\r
 690                                         int acts = currentConfig.JoyBinds[joy][i];\r
 691                                         int pl = (acts >> 16) & 1;\r
 692                                         allActions[pl] |= acts;\r
 693                                 }\r
 694                         }\r
 695                 }\r
 696         }\r
 697 \r
 698         PicoPad[0] = allActions[0] & 0xfff;\r
 699         PicoPad[1] = allActions[1] & 0xfff;\r
 700 \r
 701         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 702         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 703 \r
 704         events = (allActions[0] | allActions[1]) >> 16;\r
 705 \r
 706         // volume is treated in special way and triggered every frame\r
 707         if (events & 0x6000)\r
 708                 update_volume(1, events & 0x2000);\r
 709 \r
 710         if ((events ^ prevEvents) & 0x40) {\r
 711                 emu_changeFastForward(events & 0x40);\r
 712                 update_volume(0, 0);\r
 713                 reset_timing = 1;\r
 714         }\r
 715 \r
 716         events &= ~prevEvents;\r
 717 \r
 718         if (PicoAHW == PAHW_PICO)\r
 719                 RunEventsPico(events, keys);\r
 720         if (events) RunEvents(events);\r
 721         if (movie_data) emu_updateMovie();\r
 722 \r
 723         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 724 }\r
 725 \r
 726 \r
 727 static void updateSound(int len)\r
 728 {\r
 729         if (PicoOpt&8) len<<=1;\r
 730 \r
 731         /* avoid writing audio when lagging behind to prevent audio lag */\r
 732         if (PicoSkipFrame != 2)\r
 733                 sndout_oss_write(PsndOut, len<<1);\r
 734 }\r
 735 \r
 736 \r
 737 static void SkipFrame(int do_audio)\r
 738 {\r
 739         PicoSkipFrame=do_audio ? 1 : 2;\r
 740         PicoFrame();\r
 741         PicoSkipFrame=0;\r
 742 }\r
 743 \r
 744 \r
 745 void emu_forcedFrame(int opts)\r
 746 {\r
 747         int po_old = PicoOpt;\r
 748         int eo_old = currentConfig.EmuOpt;\r
 749 \r
 750         PicoOpt &= ~0x10;\r
 751         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 752         currentConfig.EmuOpt |= 0x80;\r
 753 \r
 754         //vidResetMode();\r
 755 #ifdef USE_320_SCREEN\r
 756         PicoDrawSetColorFormat(1);\r
 757         PicoScanBegin = EmuScanBegin16;\r
 758 #else\r
 759         PicoDrawSetColorFormat(-1);\r
 760         PicoScanEnd = EmuScanEnd16;\r
 761 #endif\r
 762         Pico.m.dirtyPal = 1;\r
 763         PicoFrameDrawOnly();\r
 764 \r
 765 /*\r
 766         if (!(Pico.video.reg[12]&1)) {\r
 767                 vidCpyM2 = vidCpyM2_32col;\r
 768                 clearArea(1);\r
 769         } else  vidCpyM2 = vidCpyM2_40col;\r
 770 \r
 771         vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 772         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 773         gp2x_video_setpalette(localPal, 0x40);\r
 774 */\r
 775         PicoOpt = po_old;\r
 776         currentConfig.EmuOpt = eo_old;\r
 777 }\r
 778 \r
 779 void emu_platformDebugCat(char *str)\r
 780 {\r
 781         // nothing\r
 782 }\r
 783 \r
 784 static void simpleWait(int thissec, int lim_time)\r
 785 {\r
 786         struct timeval tval;\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         while (tval.tv_usec < lim_time)\r
 793         {\r
 794                 spend_cycles(1024);\r
 795                 gettimeofday(&tval, 0);\r
 796                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 797         }\r
 798 }\r
 799 \r
 800 \r
 801 void emu_Loop(void)\r
 802 {\r
 803         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
 804         char fpsbuff[24]; // fps count c string\r
 805         struct timeval tval; // timing\r
 806         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 807         int  frames_done,  frames_shown,  thissec; // actual frames\r
 808         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 809         char *notice = 0;\r
 810 \r
 811         printf("entered emu_Loop()\n");\r
 812 \r
 813         fpsbuff[0] = 0;\r
 814 \r
 815         // make sure we are in correct mode\r
 816         vidResetMode();\r
 817         scaling_update();\r
 818         Pico.m.dirtyPal = 1;\r
 819         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 820         emu_findKeyBindCombos();\r
 821 \r
 822         // pal/ntsc might have changed, reset related stuff\r
 823         target_fps = Pico.m.pal ? 50 : 60;\r
 824         target_frametime = 1000000/target_fps;\r
 825         reset_timing = 1;\r
 826 \r
 827         // prepare sound stuff\r
 828         if (currentConfig.EmuOpt & 4)\r
 829         {\r
 830                 int snd_excess_add;\r
 831                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)\r
 832                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 833 \r
 834                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 835                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 836                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 837                 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
 838                 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
 839                 PicoWriteSound = updateSound;\r
 840                 update_volume(0, 0);\r
 841                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 842                 PsndOut = sndBuffer;\r
 843                 PsndRate_old = PsndRate;\r
 844                 PicoOpt_old  = PicoOpt;\r
 845                 pal_old = Pico.m.pal;\r
 846         } else {\r
 847                 PsndOut = NULL;\r
 848         }\r
 849 \r
 850         // prepare CD buffer\r
 851         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 852 \r
 853         // calc vsync offset to sync timing code with vsync\r
 854         if (currentConfig.EmuOpt&0x2000) {\r
 855                 gettimeofday(&tval, 0);\r
 856                 gp2x_video_wait_vsync();\r
 857                 gettimeofday(&tval, 0);\r
 858                 vsync_offset = tval.tv_usec;\r
 859                 while (vsync_offset >= target_frametime)\r
 860                         vsync_offset -= target_frametime;\r
 861                 if (!vsync_offset) vsync_offset++;\r
 862                 printf("vsync_offset: %i\n", vsync_offset);\r
 863         } else\r
 864                 vsync_offset = 0;\r
 865 \r
 866         frames_done = frames_shown = thissec =\r
 867         pframes_done = pframes_shown = pthissec = 0;\r
 868 \r
 869         // loop\r
 870         while (engineState == PGS_Running)\r
 871         {\r
 872                 int modes;\r
 873 \r
 874                 gettimeofday(&tval, 0);\r
 875                 if (reset_timing) {\r
 876                         reset_timing = 0;\r
 877                         pthissec = tval.tv_sec;\r
 878                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 879                 }\r
 880 \r
 881                 // show notice message?\r
 882                 if (noticeMsgTime.tv_sec)\r
 883                 {\r
 884                         static int noticeMsgSum;\r
 885                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 886                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 887                                 clearArea(0);\r
 888                                 notice = 0;\r
 889                         } else {\r
 890                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 891                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 892                                 notice = noticeMsg;\r
 893                         }\r
 894                 }\r
 895 \r
 896                 // check for mode changes\r
 897                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 898                 if (modes != oldmodes)\r
 899                 {\r
 900                         int scalex = SCREEN_WIDTH;\r
 901                         osd_fps_x = OSD_FPS_X;\r
 902                         if (modes & 4) {\r
 903                                 vidCpyM2 = vidCpyM2_40col;\r
 904                         } else {\r
 905                                 if (PicoOpt & 0x100) {\r
 906                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 907                                         scalex = 256;\r
 908                                         osd_fps_x = OSD_FPS_X - 64;\r
 909                                 } else {\r
 910                                         vidCpyM2 = vidCpyM2_32col;\r
 911                                 }\r
 912                         }\r
 913                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 914                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 915                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 916                         oldmodes = modes;\r
 917                         clearArea(1);\r
 918                 }\r
 919 \r
 920                 // second changed?\r
 921                 if (thissec != tval.tv_sec)\r
 922                 {\r
 923 #ifdef BENCHMARK\r
 924                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 925                         if (++bench == 4) {\r
 926                                 bench = 0;\r
 927                                 bench_fps_s = bench_fps / 4;\r
 928                                 bf[bfp++ & 3] = bench_fps / 4;\r
 929                                 bench_fps = 0;\r
 930                         }\r
 931                         bench_fps += frames_shown;\r
 932                         sprintf(fpsbuff, "%3i/%3i/%3i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 933                         printf("%s\n", fpsbuff);\r
 934 #else\r
 935                         if (currentConfig.EmuOpt & 2) {\r
 936                                 sprintf(fpsbuff, "%3i/%3i", frames_shown, frames_done);\r
 937                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 938                         }\r
 939 #endif\r
 940                         frames_shown = frames_done = 0;\r
 941                         thissec = tval.tv_sec;\r
 942                 }\r
 943 #ifdef PFRAMES\r
 944                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 945 #endif\r
 946 \r
 947                 if (pthissec != tval.tv_sec)\r
 948                 {\r
 949                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 950                                 pframes_done = pframes_shown = 0;\r
 951                         } else {\r
 952                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 953                                 // when second changes, but we don't want buffer to starve.\r
 954                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 955                                         updateKeys();\r
 956                                         SkipFrame(1); pframes_done++;\r
 957                                 }\r
 958 \r
 959                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 960                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 961                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 962                         }\r
 963                         pthissec = tval.tv_sec;\r
 964                 }\r
 965 \r
 966                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 967                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 968                 {\r
 969                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 970                                 updateKeys();\r
 971                                 SkipFrame(1); pframes_done++; frames_done++;\r
 972                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 973                                         gettimeofday(&tval, 0);\r
 974                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 975                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 976                                                 simpleWait(pthissec, lim_time);\r
 977                                         }\r
 978                                 }\r
 979                                 lim_time += target_frametime;\r
 980                         }\r
 981                 }\r
 982                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 983                 {\r
 984                         // no time left for this frame - skip\r
 985                         if (tval.tv_usec - lim_time >= 300000) {\r
 986                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 987                                  * try to recover by resetting timing... */\r
 988                                 reset_timing = 1;\r
 989                                 continue;\r
 990                         }\r
 991                         updateKeys();\r
 992                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
 993                         continue;\r
 994                 }\r
 995 \r
 996                 updateKeys();\r
 997                 PicoFrame();\r
 998 \r
 999                 // check time\r
1000                 gettimeofday(&tval, 0);\r
1001                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1002 \r
1003                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
1004                         reset_timing = 1;\r
1005 #if 1\r
1006                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1007                 {\r
1008                         // sleep or vsync if we are still too fast\r
1009                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1010                         if (!reset_timing && tval.tv_usec < lim_time)\r
1011                         {\r
1012                                 // we are too fast\r
1013                                 if (vsync_offset) {\r
1014                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
1015                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
1016                                         gp2x_video_wait_vsync();\r
1017                                 } else {\r
1018                                         simpleWait(pthissec, lim_time);\r
1019                                 }\r
1020                         }\r
1021                 }\r
1022 #endif\r
1023                 blit(fpsbuff, notice);\r
1024 \r
1025                 pframes_done++; pframes_shown++;\r
1026                  frames_done++;  frames_shown++;\r
1027         }\r
1028 \r
1029         emu_changeFastForward(0);\r
1030 \r
1031         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1032 \r
1033         // save SRAM\r
1034         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1035                 emu_state_cb("Writing SRAM/BRAM..");\r
1036                 emu_SaveLoadGame(0, 1);\r
1037                 SRam.changed = 0;\r
1038         }\r
1039 \r
1040         // if in 8bit mode, generate 16bit image for menu background\r
1041         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1042                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1043 }\r
1044 \r
1045 \r
1046 void emu_ResetGame(void)\r
1047 {\r
1048         PicoReset();\r
1049         reset_timing = 1;\r
1050 }\r
1051 \r