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 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 #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 void 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 \r
  81 void emu_Init(void)\r
  82 {\r
  83         // make temp buffer for alt renderer\r
  84         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  85         if (!PicoDraw2FB)\r
  86         {\r
  87                 printf("PicoDraw2FB == 0\n");\r
  88         }\r
  89 \r
  90         // make dirs for saves, cfgs, etc.\r
  91         mkdir("mds", 0777);\r
  92         mkdir("srm", 0777);\r
  93         mkdir("brm", 0777);\r
  94         mkdir("cfg", 0777);\r
  95 \r
  96         PicoInit();\r
  97         PicoMessage = emu_msg_cb;\r
  98         PicoMCDopenTray = emu_msg_tray_open;\r
  99         PicoMCDcloseTray = menu_loop_tray;\r
 100 }\r
 101 \r
 102 \r
 103 static void scaling_update(void)\r
 104 {\r
 105         PicoOpt &= ~0x4100;\r
 106         switch (currentConfig.scaling) {\r
 107                 default: break; // off\r
 108                 case 1:  // hw hor\r
 109                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 110                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 111         }\r
 112 }\r
 113 \r
 114 \r
 115 void emu_Deinit(void)\r
 116 {\r
 117         // save SRAM\r
 118         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 119                 emu_SaveLoadGame(0, 1);\r
 120                 SRam.changed = 0;\r
 121         }\r
 122 \r
 123         if (!(currentConfig.EmuOpt & 0x20)) {\r
 124                 config_writelrom(PicoConfigFile);\r
 125 #ifndef NO_SYNC\r
 126                 sync();\r
 127 #endif\r
 128         }\r
 129 \r
 130         free(PicoDraw2FB);\r
 131 \r
 132         PicoExit();\r
 133 }\r
 134 \r
 135 void emu_prepareDefaultConfig(void)\r
 136 {\r
 137         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 138         defaultConfig.EmuOpt    = 0x9f | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
 139         defaultConfig.s_PicoOpt  = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC;\r
 140         defaultConfig.s_PicoOpt |= POPT_ACC_SPRITES|POPT_EN_MCD_GFX;\r
 141         defaultConfig.s_PicoOpt &= ~POPT_EN_SVP_DRC; // crashes :(\r
 142         defaultConfig.s_PsndRate = 44100;\r
 143         defaultConfig.s_PicoRegion = 0; // auto\r
 144         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 145         defaultConfig.s_PicoCDBuffers = 0;\r
 146         defaultConfig.Frameskip = 0;\r
 147         defaultConfig.CPUclock = 200;\r
 148         defaultConfig.volume = 50;\r
 149         defaultConfig.scaling = 0;\r
 150         defaultConfig.turbo_rate = 15;\r
 151 }\r
 152 \r
 153 void emu_setDefaultConfig(void)\r
 154 {\r
 155         memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
 156         PicoOpt = currentConfig.s_PicoOpt;\r
 157         PsndRate = currentConfig.s_PsndRate;\r
 158         PicoRegionOverride = currentConfig.s_PicoRegion;\r
 159         PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
 160         PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
 161 }\r
 162 \r
 163 static void textOut16(int x, int y, const char *text)\r
 164 {\r
 165         int i,l,len=strlen(text);\r
 166         unsigned int *screen = (unsigned int *)((unsigned short *)SCREEN_BUFFER + (x&~1) + y*SCREEN_WIDTH);\r
 167 \r
 168         for (i = 0; i < len; i++)\r
 169         {\r
 170                 for (l=0;l<16;)\r
 171                 {\r
 172                         unsigned char fd = fontdata8x8[((text[i])*8)+l/2];\r
 173                         unsigned int *d = &screen[l*SCREEN_WIDTH/2];\r
 174                         if (fd&0x80) d[0]=0xffffffff;\r
 175                         if (fd&0x40) d[1]=0xffffffff;\r
 176                         if (fd&0x20) d[2]=0xffffffff;\r
 177                         if (fd&0x10) d[3]=0xffffffff;\r
 178                         if (fd&0x08) d[4]=0xffffffff;\r
 179                         if (fd&0x04) d[5]=0xffffffff;\r
 180                         if (fd&0x02) d[6]=0xffffffff;\r
 181                         if (fd&0x01) d[7]=0xffffffff;\r
 182                         l++; d = &screen[l*SCREEN_WIDTH/2];\r
 183                         if (fd&0x80) d[0]=0xffffffff;\r
 184                         if (fd&0x40) d[1]=0xffffffff;\r
 185                         if (fd&0x20) d[2]=0xffffffff;\r
 186                         if (fd&0x10) d[3]=0xffffffff;\r
 187                         if (fd&0x08) d[4]=0xffffffff;\r
 188                         if (fd&0x04) d[5]=0xffffffff;\r
 189                         if (fd&0x02) d[6]=0xffffffff;\r
 190                         if (fd&0x01) d[7]=0xffffffff;\r
 191                         l++;\r
 192                 }\r
 193                 screen += 8;\r
 194         }\r
 195 }\r
 196 \r
 197 \r
 198 void osd_text(int x, int y, const char *text)\r
 199 {\r
 200         int len = strlen(text)*8;\r
 201 \r
 202         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 203                 int *p, i, h;\r
 204                 x &= ~3; // align x\r
 205                 len = (len+3) >> 2;\r
 206                 for (h = 0; h < 8; h++) {\r
 207                         p = (int *) ((unsigned char *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 208                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 209                 }\r
 210                 emu_textOut8(x, y, text);\r
 211         } else {\r
 212                 int *p, i, h;\r
 213                 x &= ~1; // align x\r
 214                 len++;\r
 215                 for (h = 0; h < 16; h++) {\r
 216                         p = (int *) ((unsigned short *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 217                         for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
 218                 }\r
 219                 textOut16(x, y, text);\r
 220         }\r
 221 }\r
 222 \r
 223 static void draw_cd_leds(void)\r
 224 {\r
 225 //      static\r
 226         int old_reg;\r
 227 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 228         old_reg = Pico_mcd->s68k_regs[0];\r
 229 \r
 230         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 231                 // 8-bit modes\r
 232                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 233                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 234                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+ 4) =\r
 235                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+ 4) =\r
 236                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+ 4) = col_g;\r
 237                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+12) =\r
 238                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+12) =\r
 239                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+12) = col_r;\r
 240         } else {\r
 241                 // 16-bit modes\r
 242                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + SCREEN_WIDTH*2+4);\r
 243                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 244                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 245                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
 246                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
 247                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 248         }\r
 249 }\r
 250 \r
 251 static void draw_pico_ptr(void)\r
 252 {\r
 253         unsigned short *p = (unsigned short *)gp2x_screen;\r
 254 \r
 255         // only if pen enabled and for 16bit modes\r
 256         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 257 \r
 258         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 259                 p += 32;\r
 260 \r
 261         p += SCREEN_WIDTH * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 262         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 263         p[0]   ^= 0xffff;\r
 264         p[319] ^= 0xffff;\r
 265         p[320] ^= 0xffff;\r
 266         p[321] ^= 0xffff;\r
 267         p[640] ^= 0xffff;\r
 268 }\r
 269 \r
 270 #ifdef USE_320_SCREEN\r
 271 \r
 272 static int EmuScanBegin16(unsigned int num)\r
 273 {\r
 274         if (!(Pico.video.reg[1]&8)) num += 8;\r
 275         DrawLineDest = (unsigned short *)gp2x_screen + num*800 + 800/2 - 320/2;\r
 276         //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
 277         //DrawLineDest = (unsigned short *)gp2x_screen + num*w;\r
 278 \r
 279         return 0;\r
 280 }\r
 281 \r
 282 #else // USE_320_SCREEN\r
 283 \r
 284 static int EmuScanEnd16(unsigned int num)\r
 285 {\r
 286         unsigned char  *ps=HighCol+8;\r
 287         unsigned short *pd;\r
 288         unsigned short *pal=HighPal;\r
 289         int sh = Pico.video.reg[0xC]&8;\r
 290         int len, mask = 0xff;\r
 291 \r
 292         if (!(Pico.video.reg[1]&8)) num += 8;\r
 293         pd=(unsigned short *)gp2x_screen + num*800*2 + 800/2 - 320*2/2;\r
 294 \r
 295         if (Pico.m.dirtyPal)\r
 296                 PicoDoHighPal555(sh);\r
 297 \r
 298         if (Pico.video.reg[12]&1) {\r
 299                 len = 320;\r
 300         } else {\r
 301                 pd += 32*2;\r
 302                 len = 256;\r
 303         }\r
 304 \r
 305         if (!sh && (rendstatus & PDRAW_ACC_SPRITES))\r
 306                 mask=0x3f; // accurate sprites, upper bits are priority stuff\r
 307 \r
 308 #if 1\r
 309         clut_line(pd, ps, pal, (mask<<16) | len);\r
 310 #else\r
 311         for (; len > 0; len--)\r
 312         {\r
 313                 unsigned int p = pal[*ps++ & mask];\r
 314                 p |= p << 16;\r
 315                 *(unsigned int *)pd = p;\r
 316                 *(unsigned int *)(&pd[800]) = p;\r
 317                 pd += 2;\r
 318         }\r
 319 #endif\r
 320 \r
 321         return 0;\r
 322 }\r
 323 \r
 324 #endif // USE_320_SCREEN\r
 325 \r
 326 static int EmuScanBegin8(unsigned int num)\r
 327 {\r
 328         if (!(Pico.video.reg[1]&8)) num += 8;\r
 329         DrawLineDest = (unsigned char *)  gp2x_screen + SCREEN_WIDTH * num;\r
 330 \r
 331         return 0;\r
 332 }\r
 333 \r
 334 int localPal[0x100];\r
 335 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 336 \r
 337 static void blit(const char *fps, const char *notice)\r
 338 {\r
 339         int emu_opt = currentConfig.EmuOpt;\r
 340 \r
 341         if (PicoOpt&0x10)\r
 342         {\r
 343                 // 8bit fast renderer\r
 344                 if (Pico.m.dirtyPal) {\r
 345                         Pico.m.dirtyPal = 0;\r
 346                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 347                         // feed new palette to our device\r
 348                         gp2x_video_setpalette(localPal, 0x40);\r
 349                 }\r
 350                 // a hack for VR\r
 351                 if (PicoRead16Hook == PicoSVPRead16)\r
 352                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 353                 // do actual copy\r
 354                 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 355         }\r
 356         else if (!(emu_opt&0x80))\r
 357         {\r
 358                 // 8bit accurate renderer\r
 359                 if (Pico.m.dirtyPal)\r
 360                 {\r
 361                         int pallen = 0x40;\r
 362                         Pico.m.dirtyPal = 0;\r
 363                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 364                         {\r
 365                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 366                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 367                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 368                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 369                                 pallen = 0x100;\r
 370                         }\r
 371                         else if (rendstatus & PDRAW_ACC_SPRITES) {\r
 372                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 373                                 memcpy32(localPal+0x40, localPal, 0x40);\r
 374                                 memcpy32(localPal+0x80, localPal, 0x40);\r
 375                                 memcpy32(localPal+0xc0, localPal, 0x40);\r
 376                                 pallen = 0x100;\r
 377                         }\r
 378                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 379                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 380                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 381                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 382                                 pallen = 0xc0;\r
 383                         }\r
 384                         else {\r
 385                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 386                         }\r
 387                         if (pallen > 0xc0) {\r
 388                                 localPal[0xc0] = 0x0000c000;\r
 389                                 localPal[0xd0] = 0x00c00000;\r
 390                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 391                                 localPal[0xf0] = 0x00ffffff;\r
 392                         }\r
 393                         gp2x_video_setpalette(localPal, pallen);\r
 394                 }\r
 395         }\r
 396 \r
 397         if (notice || (emu_opt & 2)) {\r
 398                 int h = SCREEN_HEIGHT-16;\r
 399                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 16;\r
 400                 if (notice) osd_text(4, h, notice);\r
 401                 if (emu_opt & 2)\r
 402                         osd_text(osd_fps_x, h, fps);\r
 403         }\r
 404         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 405                 draw_cd_leds();\r
 406         if (PicoAHW & PAHW_PICO)\r
 407                 draw_pico_ptr();\r
 408 {\r
 409 //static int u=0;\r
 410 //memset((char *)gp2x_screen+800*471*2, (u++)>>1, 800*9*2);\r
 411 }\r
 412 \r
 413         //gp2x_video_wait_vsync();\r
 414         gp2x_video_flip();\r
 415 }\r
 416 \r
 417 \r
 418 // clears whole screen or just the notice area (in all buffers)\r
 419 static void clearArea(int full)\r
 420 {\r
 421         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 422                 // 8-bit renderers\r
 423                 if (full) gp2x_memset_all_buffers(0, 0xe0, SCREEN_WIDTH*240);\r
 424                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*232, 0xe0, SCREEN_WIDTH*8);\r
 425         } else {\r
 426                 // 16bit accurate renderer\r
 427                 if (full) gp2x_memset_all_buffers(0, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 428                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 429         }\r
 430 }\r
 431 \r
 432 \r
 433 static void vidResetMode(void)\r
 434 {\r
 435         if (PicoOpt&0x10) {\r
 436                 gp2x_video_changemode(8);\r
 437         } else if (currentConfig.EmuOpt&0x80) {\r
 438                 gp2x_video_changemode(16);\r
 439 #ifdef USE_320_SCREEN\r
 440                 PicoDrawSetColorFormat(1);\r
 441                 PicoScanBegin = EmuScanBegin16;\r
 442 #else\r
 443                 PicoDrawSetColorFormat(-1);\r
 444                 PicoScanEnd = EmuScanEnd16;\r
 445 #endif\r
 446         } else {\r
 447                 gp2x_video_changemode(8);\r
 448                 PicoDrawSetColorFormat(2);\r
 449                 PicoScanBegin = EmuScanBegin8;\r
 450         }\r
 451         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 452                 // setup pal for 8-bit modes\r
 453                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 454                 localPal[0xd0] = 0x00c00000;\r
 455                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 456                 localPal[0xf0] = 0x00ffffff;\r
 457                 gp2x_video_setpalette(localPal, 0x100);\r
 458                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 459                 gp2x_video_flip();\r
 460         }\r
 461         Pico.m.dirtyPal = 1;\r
 462         // reset scaling\r
 463         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 464              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 465         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 466 }\r
 467 \r
 468 \r
 469 static void emu_msg_cb(const char *msg)\r
 470 {\r
 471         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 472                 // 8-bit renderers\r
 473                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16), 0xe0, SCREEN_WIDTH*16);\r
 474                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 475                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16),\r
 476                         SCREEN_WIDTH*(SCREEN_HEIGHT-16), SCREEN_WIDTH*16);\r
 477         } else {\r
 478                 // 16bit accurate renderer\r
 479                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 480                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 481                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2,\r
 482                         SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, SCREEN_WIDTH*16*2);\r
 483         }\r
 484         gettimeofday(&noticeMsgTime, 0);\r
 485         noticeMsgTime.tv_sec -= 2;\r
 486 \r
 487         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 488         reset_timing = 1;\r
 489 }\r
 490 \r
 491 static void emu_state_cb(const char *str)\r
 492 {\r
 493         clearArea(0);\r
 494         blit("", str);\r
 495 }\r
 496 \r
 497 static void emu_msg_tray_open(void)\r
 498 {\r
 499         strcpy(noticeMsg, "CD tray opened");\r
 500         gettimeofday(&noticeMsgTime, 0);\r
 501 }\r
 502 \r
 503 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 504 {\r
 505         int ret, px, py, lim_x;\r
 506         static int pdown_frames = 0;\r
 507 \r
 508         emu_RunEventsPico(events);\r
 509 \r
 510         if (pico_inp_mode == 0) return;\r
 511 \r
 512         // for F200\r
 513         ret = gp2x_touchpad_read(&px, &py);\r
 514         if (ret >= 0)\r
 515         {\r
 516                 if (ret > 35000)\r
 517                 {\r
 518                         if (pdown_frames++ > 5)\r
 519                                 PicoPad[0] |= 0x20;\r
 520 \r
 521                         pico_pen_x = px;\r
 522                         pico_pen_y = py;\r
 523                         if (!(Pico.video.reg[12]&1)) {\r
 524                                 pico_pen_x -= 32;\r
 525                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 526                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 527                         }\r
 528                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 529                 }\r
 530                 else\r
 531                         pdown_frames = 0;\r
 532 \r
 533                 //if (ret == 0)\r
 534                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 535         }\r
 536 \r
 537         PicoPad[0] &= ~0x0f; // release UDLR\r
 538         if (gp2x_keys & GP2X_UP)    pico_pen_y--;\r
 539         if (gp2x_keys & GP2X_DOWN)  pico_pen_y++;\r
 540         if (gp2x_keys & GP2X_LEFT)  pico_pen_x--;\r
 541         if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
 542 \r
 543         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 544         if (pico_pen_y < 8) pico_pen_y = 8;\r
 545         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 546         if (pico_pen_x < 0) pico_pen_x = 0;\r
 547         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 548 \r
 549         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 550         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 551         PicoPicohw.pen_pos[0] += 0x3c;\r
 552         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 553 }\r
 554 \r
 555 static void update_volume(int has_changed, int is_up)\r
 556 {\r
 557         static int prev_frame = 0, wait_frames = 0;\r
 558         int vol = currentConfig.volume;\r
 559 \r
 560         if (has_changed)\r
 561         {\r
 562                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 563                         wait_frames++;\r
 564                 else {\r
 565                         if (is_up) {\r
 566                                 if (vol < 99) vol++;\r
 567                         } else {\r
 568                                 if (vol >  0) vol--;\r
 569                         }\r
 570                         wait_frames = 0;\r
 571                         gp2x_sound_volume(vol, vol);\r
 572                         currentConfig.volume = vol;\r
 573                 }\r
 574                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 575                 gettimeofday(&noticeMsgTime, 0);\r
 576                 prev_frame = Pico.m.frame_count;\r
 577         }\r
 578 \r
 579         // set the right mixer func\r
 580         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 581         if (vol >= 5)\r
 582                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 583         else {\r
 584                 mix_32_to_16l_level = 5 - vol;\r
 585                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 586         }\r
 587 }\r
 588 \r
 589 static void RunEvents(unsigned int which)\r
 590 {\r
 591         if (which & 0x1800) // save or load (but not both)\r
 592         {\r
 593                 int do_it = 1;\r
 594                 if ( emu_checkSaveFile(state_slot) &&\r
 595                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 596                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 597                         unsigned long keys;\r
 598                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 599                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 600                                 usleep(50*1024);\r
 601                         if (keys & GP2X_X) do_it = 0;\r
 602                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 603                                 usleep(50*1024);\r
 604                         clearArea(0);\r
 605                 }\r
 606                 if (do_it) {\r
 607                         osd_text(4, SCREEN_HEIGHT-16, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 608                         PicoStateProgressCB = emu_state_cb;\r
 609                         gp2x_memcpy_all_buffers(gp2x_screen, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 610                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 611                         PicoStateProgressCB = NULL;\r
 612                 }\r
 613 \r
 614                 reset_timing = 1;\r
 615         }\r
 616         if (which & 0x0400) // switch renderer\r
 617         {\r
 618                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 619                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 620                 else   currentConfig.EmuOpt &= ~0x80;\r
 621 \r
 622                 vidResetMode();\r
 623 \r
 624                 if (PicoOpt&0x10) {\r
 625                         strcpy(noticeMsg, " 8bit fast renderer");\r
 626                 } else if (currentConfig.EmuOpt&0x80) {\r
 627                         strcpy(noticeMsg, "16bit accurate renderer");\r
 628                 } else {\r
 629                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 630                 }\r
 631 \r
 632                 gettimeofday(&noticeMsgTime, 0);\r
 633         }\r
 634         if (which & 0x0300)\r
 635         {\r
 636                 if(which&0x0200) {\r
 637                         state_slot -= 1;\r
 638                         if(state_slot < 0) state_slot = 9;\r
 639                 } else {\r
 640                         state_slot += 1;\r
 641                         if(state_slot > 9) state_slot = 0;\r
 642                 }\r
 643                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 644                 gettimeofday(&noticeMsgTime, 0);\r
 645         }\r
 646         if (which & 0x0080) {\r
 647                 engineState = PGS_Menu;\r
 648         }\r
 649 }\r
 650 \r
 651 static void updateKeys(void)\r
 652 {\r
 653         unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
 654         static unsigned int prevEvents = 0;\r
 655         int joy, i;\r
 656 \r
 657         keys = gp2x_joystick_read(0);\r
 658         if (keys & GP2X_SELECT) {\r
 659                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 660                 // wait until select is released, so menu would not resume game\r
 661                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 662         }\r
 663 \r
 664         keys &= CONFIGURABLE_KEYS;\r
 665         keys2 = keys;\r
 666 \r
 667         for (i = 0; i < 32; i++)\r
 668         {\r
 669                 if (keys2 & (1 << i))\r
 670                 {\r
 671                         int pl, acts = currentConfig.KeyBinds[i];\r
 672                         if (!acts) continue;\r
 673                         pl = (acts >> 16) & 1;\r
 674                         if (kb_combo_keys & (1 << i))\r
 675                         {\r
 676                                 int u = i+1, acts_c = acts & kb_combo_acts;\r
 677                                 // let's try to find the other one\r
 678                                 if (acts_c) {\r
 679                                         for (; u < 32; u++)\r
 680                                                 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
 681                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
 682                                                         keys2 &= ~((1 << i) | (1 << u));\r
 683                                                         break;\r
 684                                                 }\r
 685                                 }\r
 686                                 // add non-combo actions if combo ones were not found\r
 687                                 if (!acts_c || u == 32)\r
 688                                         allActions[pl] |= acts & ~kb_combo_acts;\r
 689                         } else {\r
 690                                 allActions[pl] |= acts;\r
 691                         }\r
 692                 }\r
 693         }\r
 694 \r
 695         // add joy inputs\r
 696         if (num_of_joys > 0)\r
 697         {\r
 698                 gp2x_usbjoy_update();\r
 699                 for (joy = 0; joy < num_of_joys; joy++) {\r
 700                         int btns = gp2x_usbjoy_check2(joy);\r
 701                         for (i = 0; i < 32; i++) {\r
 702                                 if (btns & (1 << i)) {\r
 703                                         int acts = currentConfig.JoyBinds[joy][i];\r
 704                                         int pl = (acts >> 16) & 1;\r
 705                                         allActions[pl] |= acts;\r
 706                                 }\r
 707                         }\r
 708                 }\r
 709         }\r
 710 \r
 711         PicoPad[0] = allActions[0] & 0xfff;\r
 712         PicoPad[1] = allActions[1] & 0xfff;\r
 713 \r
 714         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 715         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 716 \r
 717         events = (allActions[0] | allActions[1]) >> 16;\r
 718 \r
 719         // volume is treated in special way and triggered every frame\r
 720         if (events & 0x6000)\r
 721                 update_volume(1, events & 0x2000);\r
 722 \r
 723         if ((events ^ prevEvents) & 0x40) {\r
 724                 emu_changeFastForward(events & 0x40);\r
 725                 update_volume(0, 0);\r
 726                 reset_timing = 1;\r
 727         }\r
 728 \r
 729         events &= ~prevEvents;\r
 730 \r
 731         if (PicoAHW == PAHW_PICO)\r
 732                 RunEventsPico(events, keys);\r
 733         if (events) RunEvents(events);\r
 734         if (movie_data) emu_updateMovie();\r
 735 \r
 736         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 737 }\r
 738 \r
 739 \r
 740 static void updateSound(int len)\r
 741 {\r
 742         if (PicoOpt&8) len<<=1;\r
 743 \r
 744         /* avoid writing audio when lagging behind to prevent audio lag */\r
 745         if (PicoSkipFrame != 2)\r
 746                 gp2x_sound_write(PsndOut, len<<1);\r
 747 }\r
 748 \r
 749 \r
 750 static void SkipFrame(int do_audio)\r
 751 {\r
 752         PicoSkipFrame=do_audio ? 1 : 2;\r
 753         PicoFrame();\r
 754         PicoSkipFrame=0;\r
 755 }\r
 756 \r
 757 \r
 758 void emu_forcedFrame(int opts)\r
 759 {\r
 760         int po_old = PicoOpt;\r
 761         int eo_old = currentConfig.EmuOpt;\r
 762 \r
 763         PicoOpt &= ~0x10;\r
 764         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 765         currentConfig.EmuOpt |= 0x80;\r
 766 \r
 767         //vidResetMode();\r
 768 #ifdef USE_320_SCREEN\r
 769         PicoDrawSetColorFormat(1);\r
 770         PicoScanBegin = EmuScanBegin16;\r
 771 #else\r
 772         PicoDrawSetColorFormat(-1);\r
 773         PicoScanEnd = EmuScanEnd16;\r
 774 #endif\r
 775         Pico.m.dirtyPal = 1;\r
 776         PicoFrameDrawOnly();\r
 777 \r
 778 /*\r
 779         if (!(Pico.video.reg[12]&1)) {\r
 780                 vidCpyM2 = vidCpyM2_32col;\r
 781                 clearArea(1);\r
 782         } else  vidCpyM2 = vidCpyM2_40col;\r
 783 \r
 784         vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 785         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 786         gp2x_video_setpalette(localPal, 0x40);\r
 787 */\r
 788         PicoOpt = po_old;\r
 789         currentConfig.EmuOpt = eo_old;\r
 790 }\r
 791 \r
 792 static void simpleWait(int thissec, int lim_time)\r
 793 {\r
 794         struct timeval tval;\r
 795 \r
 796         spend_cycles(1024);\r
 797         gettimeofday(&tval, 0);\r
 798         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 799 \r
 800         while (tval.tv_usec < lim_time)\r
 801         {\r
 802                 spend_cycles(1024);\r
 803                 gettimeofday(&tval, 0);\r
 804                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 805         }\r
 806 }\r
 807 \r
 808 \r
 809 void emu_Loop(void)\r
 810 {\r
 811         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
 812         char fpsbuff[24]; // fps count c string\r
 813         struct timeval tval; // timing\r
 814         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 815         int  frames_done,  frames_shown,  thissec; // actual frames\r
 816         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 817         char *notice = 0;\r
 818 \r
 819         printf("entered emu_Loop()\n");\r
 820 \r
 821         fpsbuff[0] = 0;\r
 822 \r
 823         // make sure we are in correct mode\r
 824         vidResetMode();\r
 825         scaling_update();\r
 826         Pico.m.dirtyPal = 1;\r
 827         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 828         emu_findKeyBindCombos();\r
 829 \r
 830         // pal/ntsc might have changed, reset related stuff\r
 831         target_fps = Pico.m.pal ? 50 : 60;\r
 832         target_frametime = 1000000/target_fps;\r
 833         reset_timing = 1;\r
 834 \r
 835         // prepare sound stuff\r
 836         if (currentConfig.EmuOpt & 4)\r
 837         {\r
 838                 int snd_excess_add;\r
 839                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)\r
 840                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 841 \r
 842                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 843                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 844                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 845                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 846                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 847                 PicoWriteSound = updateSound;\r
 848                 update_volume(0, 0);\r
 849                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 850                 PsndOut = sndBuffer;\r
 851                 PsndRate_old = PsndRate;\r
 852                 PicoOpt_old  = PicoOpt;\r
 853                 pal_old = Pico.m.pal;\r
 854         } else {\r
 855                 PsndOut = NULL;\r
 856         }\r
 857 \r
 858         // prepare CD buffer\r
 859         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 860 \r
 861         // calc vsync offset to sync timing code with vsync\r
 862         if (currentConfig.EmuOpt&0x2000) {\r
 863                 gettimeofday(&tval, 0);\r
 864                 gp2x_video_wait_vsync();\r
 865                 gettimeofday(&tval, 0);\r
 866                 vsync_offset = tval.tv_usec;\r
 867                 while (vsync_offset >= target_frametime)\r
 868                         vsync_offset -= target_frametime;\r
 869                 if (!vsync_offset) vsync_offset++;\r
 870                 printf("vsync_offset: %i\n", vsync_offset);\r
 871         } else\r
 872                 vsync_offset = 0;\r
 873 \r
 874         frames_done = frames_shown = thissec =\r
 875         pframes_done = pframes_shown = pthissec = 0;\r
 876 \r
 877         // loop\r
 878         while (engineState == PGS_Running)\r
 879         {\r
 880                 int modes;\r
 881 \r
 882                 gettimeofday(&tval, 0);\r
 883                 if (reset_timing) {\r
 884                         reset_timing = 0;\r
 885                         pthissec = tval.tv_sec;\r
 886                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 887                 }\r
 888 \r
 889                 // show notice message?\r
 890                 if (noticeMsgTime.tv_sec)\r
 891                 {\r
 892                         static int noticeMsgSum;\r
 893                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 894                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 895                                 clearArea(0);\r
 896                                 notice = 0;\r
 897                         } else {\r
 898                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 899                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 900                                 notice = noticeMsg;\r
 901                         }\r
 902                 }\r
 903 \r
 904                 // check for mode changes\r
 905                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 906                 if (modes != oldmodes)\r
 907                 {\r
 908                         int scalex = SCREEN_WIDTH;\r
 909                         osd_fps_x = OSD_FPS_X;\r
 910                         if (modes & 4) {\r
 911                                 vidCpyM2 = vidCpyM2_40col;\r
 912                         } else {\r
 913                                 if (PicoOpt & 0x100) {\r
 914                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 915                                         scalex = 256;\r
 916                                         osd_fps_x = OSD_FPS_X - 64;\r
 917                                 } else {\r
 918                                         vidCpyM2 = vidCpyM2_32col;\r
 919                                 }\r
 920                         }\r
 921                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 922                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 923                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 924                         oldmodes = modes;\r
 925                         clearArea(1);\r
 926                 }\r
 927 \r
 928                 // second changed?\r
 929                 if (thissec != tval.tv_sec)\r
 930                 {\r
 931 #ifdef BENCHMARK\r
 932                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 933                         if (++bench == 4) {\r
 934                                 bench = 0;\r
 935                                 bench_fps_s = bench_fps / 4;\r
 936                                 bf[bfp++ & 3] = bench_fps / 4;\r
 937                                 bench_fps = 0;\r
 938                         }\r
 939                         bench_fps += frames_shown;\r
 940                         sprintf(fpsbuff, "%3i/%3i/%3i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 941 #else\r
 942                         if (currentConfig.EmuOpt & 2) {\r
 943                                 sprintf(fpsbuff, "%3i/%3i", frames_shown, frames_done);\r
 944                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 945                         }\r
 946 #endif\r
 947                         frames_shown = frames_done = 0;\r
 948                         thissec = tval.tv_sec;\r
 949                 }\r
 950 #ifdef PFRAMES\r
 951                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 952 #endif\r
 953 \r
 954                 if (pthissec != tval.tv_sec)\r
 955                 {\r
 956                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 957                                 pframes_done = pframes_shown = 0;\r
 958                         } else {\r
 959                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 960                                 // when second changes, but we don't want buffer to starve.\r
 961                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 962                                         updateKeys();\r
 963                                         SkipFrame(1); pframes_done++;\r
 964                                 }\r
 965 \r
 966                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 967                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 968                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 969                         }\r
 970                         pthissec = tval.tv_sec;\r
 971                 }\r
 972 \r
 973                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 974                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 975                 {\r
 976                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 977                                 updateKeys();\r
 978                                 SkipFrame(1); pframes_done++; frames_done++;\r
 979                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 980                                         gettimeofday(&tval, 0);\r
 981                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 982                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 983                                                 simpleWait(pthissec, lim_time);\r
 984                                         }\r
 985                                 }\r
 986                                 lim_time += target_frametime;\r
 987                         }\r
 988                 }\r
 989                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 990                 {\r
 991                         // no time left for this frame - skip\r
 992                         if (tval.tv_usec - lim_time >= 300000) {\r
 993                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 994                                  * try to recover by resetting timing... */\r
 995                                 reset_timing = 1;\r
 996                                 continue;\r
 997                         }\r
 998                         updateKeys();\r
 999                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
1000                         continue;\r
1001                 }\r
1002 \r
1003                 updateKeys();\r
1004                 PicoFrame();\r
1005 \r
1006                 // check time\r
1007                 gettimeofday(&tval, 0);\r
1008                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1009 \r
1010                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
1011                         reset_timing = 1;\r
1012 /*              else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1013                 {\r
1014                         // sleep or vsync if we are still too fast\r
1015                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1016                         if (!reset_timing && tval.tv_usec < lim_time)\r
1017                         {\r
1018                                 // we are too fast\r
1019                                 if (vsync_offset) {\r
1020                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
1021                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
1022                                         gp2x_video_wait_vsync();\r
1023                                 } else {\r
1024                                         simpleWait(pthissec, lim_time);\r
1025                                 }\r
1026                         }\r
1027                 }\r
1028 */\r
1029                 blit(fpsbuff, notice);\r
1030 \r
1031                 pframes_done++; pframes_shown++;\r
1032                  frames_done++;  frames_shown++;\r
1033         }\r
1034 \r
1035         emu_changeFastForward(0);\r
1036 \r
1037         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1038 \r
1039         // save SRAM\r
1040         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1041                 emu_state_cb("Writing SRAM/BRAM..");\r
1042                 emu_SaveLoadGame(0, 1);\r
1043                 SRam.changed = 0;\r
1044         }\r
1045 \r
1046         // if in 8bit mode, generate 16bit image for menu background\r
1047         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1048                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1049 }\r
1050 \r
1051 \r
1052 void emu_ResetGame(void)\r
1053 {\r
1054         PicoReset();\r
1055         reset_timing = 1;\r
1056 }\r
1057 \r