gp2x/emu.c

   1 // (c) Copyright 2006-2007 notaz, All rights reserved.\r
   2 // Free for non-commercial use.\r
   3 \r
   4 // For commercial use, separate licencing terms must be obtained.\r
   5 \r
   6 #include <stdio.h>\r
   7 #include <stdlib.h>\r
   8 #include <sys/time.h>\r
   9 #include <sys/stat.h>\r
  10 #include <sys/types.h>\r
  11 #include <linux/limits.h>\r
  12 #include <ctype.h>\r
  13 #include <unistd.h>\r
  14 \r
  15 #include <stdarg.h>\r
  16 \r
  17 #include "emu.h"\r
  18 #include "gp2x.h"\r
  19 #include "usbjoy.h"\r
  20 #include "menu.h"\r
  21 #include "../common/arm_utils.h"\r
  22 #include "../common/fonts.h"\r
  23 #include "../common/emu.h"\r
  24 #include "../common/config.h"\r
  25 #include "cpuctrl.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 \r
  34 #ifdef BENCHMARK\r
  35 #define OSD_FPS_X 220\r
  36 #else\r
  37 #define OSD_FPS_X 260\r
  38 #endif\r
  39 \r
  40 \r
  41 int engineState;\r
  42 int select_exits = 0;\r
  43 \r
  44 char romFileName[PATH_MAX];\r
  45 \r
  46 extern int crashed_940;\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 static int gp2x_old_gamma = 100;\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 = 320/2, 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         // restore gamma\r
 137         if (gp2x_old_gamma != 100)\r
 138                 set_gamma(100, 0);\r
 139 }\r
 140 \r
 141 void emu_prepareDefaultConfig(void)\r
 142 {\r
 143         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 144         defaultConfig.EmuOpt    = 0x9d | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
 145         defaultConfig.s_PicoOpt = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;\r
 146         defaultConfig.s_PsndRate = 44100;\r
 147         defaultConfig.s_PicoRegion = 0; // auto\r
 148         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 149         defaultConfig.s_PicoCDBuffers = 0;\r
 150         defaultConfig.Frameskip = -1; // auto\r
 151         defaultConfig.CPUclock = 200;\r
 152         defaultConfig.volume = 50;\r
 153         defaultConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 154         defaultConfig.KeyBinds[ 4] = 1<<1;\r
 155         defaultConfig.KeyBinds[ 2] = 1<<2;\r
 156         defaultConfig.KeyBinds[ 6] = 1<<3;\r
 157         defaultConfig.KeyBinds[14] = 1<<4;\r
 158         defaultConfig.KeyBinds[13] = 1<<5;\r
 159         defaultConfig.KeyBinds[12] = 1<<6;\r
 160         defaultConfig.KeyBinds[ 8] = 1<<7;\r
 161         defaultConfig.KeyBinds[15] = 1<<26; // switch rend\r
 162         defaultConfig.KeyBinds[10] = 1<<27; // save state\r
 163         defaultConfig.KeyBinds[11] = 1<<28; // load state\r
 164         defaultConfig.KeyBinds[23] = 1<<29; // vol up\r
 165         defaultConfig.KeyBinds[22] = 1<<30; // vol down\r
 166         defaultConfig.gamma = 100;\r
 167         defaultConfig.scaling = 0;\r
 168         defaultConfig.turbo_rate = 15;\r
 169 }\r
 170 \r
 171 void osd_text(int x, int y, const char *text)\r
 172 {\r
 173         int len = strlen(text)*8;\r
 174 \r
 175         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 176                 int *p, i, h;\r
 177                 x &= ~3; // align x\r
 178                 len = (len+3) >> 2;\r
 179                 for (h = 0; h < 8; h++) {\r
 180                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 181                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 182                 }\r
 183                 emu_textOut8(x, y, text);\r
 184         } else {\r
 185                 int *p, i, h;\r
 186                 x &= ~1; // align x\r
 187                 len = (len+1) >> 1;\r
 188                 for (h = 0; h < 8; h++) {\r
 189                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 190                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 191                 }\r
 192                 emu_textOut16(x, y, text);\r
 193         }\r
 194 }\r
 195 \r
 196 static void draw_cd_leds(void)\r
 197 {\r
 198 //      static\r
 199         int old_reg;\r
 200 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 201         old_reg = Pico_mcd->s68k_regs[0];\r
 202 \r
 203         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 204                 // 8-bit modes\r
 205                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 206                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 207                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 208                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 209                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 210                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 211                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 212                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 213         } else {\r
 214                 // 16-bit modes\r
 215                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 216                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 217                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 218                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 219                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 220                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 221         }\r
 222 }\r
 223 \r
 224 static void draw_pico_ptr(void)\r
 225 {\r
 226         unsigned short *p = (unsigned short *)gp2x_screen;\r
 227 \r
 228         // only if pen enabled and for 16bit modes\r
 229         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 230 \r
 231         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 232                 p += 32;\r
 233 \r
 234         p += 320 * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 235         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 236         p[0]   ^= 0xffff;\r
 237         p[319] ^= 0xffff;\r
 238         p[320] ^= 0xffff;\r
 239         p[321] ^= 0xffff;\r
 240         p[640] ^= 0xffff;\r
 241 }\r
 242 \r
 243 static int EmuScanBegin16(unsigned int num)\r
 244 {\r
 245         if (!(Pico.video.reg[1]&8)) num += 8;\r
 246         DrawLineDest = (unsigned short *) gp2x_screen + 320 * num;\r
 247 \r
 248         return 0;\r
 249 }\r
 250 \r
 251 static int EmuScanBegin8(unsigned int num)\r
 252 {\r
 253         if (!(Pico.video.reg[1]&8)) num += 8;\r
 254         DrawLineDest = (unsigned char *)  gp2x_screen + 320 * num;\r
 255 \r
 256         return 0;\r
 257 }\r
 258 \r
 259 int localPal[0x100];\r
 260 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 261 \r
 262 static void blit(const char *fps, const char *notice)\r
 263 {\r
 264         int emu_opt = currentConfig.EmuOpt;\r
 265 \r
 266         if (PicoOpt&0x10)\r
 267         {\r
 268                 // 8bit fast renderer\r
 269                 if (Pico.m.dirtyPal) {\r
 270                         Pico.m.dirtyPal = 0;\r
 271                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 272                         // feed new palette to our device\r
 273                         gp2x_video_setpalette(localPal, 0x40);\r
 274                 }\r
 275                 // a hack for VR\r
 276                 if (PicoRead16Hook == PicoSVPRead16)\r
 277                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 278                 // do actual copy\r
 279                 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 280         }\r
 281         else if (!(emu_opt&0x80))\r
 282         {\r
 283                 // 8bit accurate renderer\r
 284                 if (Pico.m.dirtyPal)\r
 285                 {\r
 286                         int pallen = 0x40;\r
 287                         Pico.m.dirtyPal = 0;\r
 288                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 289                         {\r
 290                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 291                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 292                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 293                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 294                                 pallen = 0x100;\r
 295                         }\r
 296                         else if (rendstatus & PDRAW_ACC_SPRITES) {\r
 297                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 298                                 memcpy32(localPal+0x40, localPal, 0x40);\r
 299                                 memcpy32(localPal+0x80, localPal, 0x40);\r
 300                                 memcpy32(localPal+0xc0, localPal, 0x40);\r
 301                                 pallen = 0x100;\r
 302                         }\r
 303                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 304                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 305                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 306                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 307                                 pallen = 0xc0;\r
 308                         }\r
 309                         else {\r
 310                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 311                         }\r
 312                         if (pallen > 0xc0) {\r
 313                                 localPal[0xc0] = 0x0000c000;\r
 314                                 localPal[0xd0] = 0x00c00000;\r
 315                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 316                                 localPal[0xf0] = 0x00ffffff;\r
 317                         }\r
 318                         gp2x_video_setpalette(localPal, pallen);\r
 319                 }\r
 320         }\r
 321 \r
 322         if (notice || (emu_opt & 2)) {\r
 323                 int h = 232;\r
 324                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
 325                 if (notice) osd_text(4, h, notice);\r
 326                 if (emu_opt & 2)\r
 327                         osd_text(osd_fps_x, h, fps);\r
 328         }\r
 329         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 330                 draw_cd_leds();\r
 331         if (PicoAHW & PAHW_PICO)\r
 332                 draw_pico_ptr();\r
 333 \r
 334         //gp2x_video_wait_vsync();\r
 335         gp2x_video_flip();\r
 336 \r
 337         if (!(PicoOpt&0x10)) {\r
 338                 if (!(Pico.video.reg[1]&8)) {\r
 339                         if (currentConfig.EmuOpt&0x80) {\r
 340                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 341                         } else {\r
 342                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 343                         }\r
 344                 } else {\r
 345                         DrawLineDest = gp2x_screen;\r
 346                 }\r
 347         }\r
 348 }\r
 349 \r
 350 \r
 351 // clears whole screen or just the notice area (in all buffers)\r
 352 static void clearArea(int full)\r
 353 {\r
 354         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 355                 // 8-bit renderers\r
 356                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 357                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 358         } else {\r
 359                 // 16bit accurate renderer\r
 360                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 361                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 362         }\r
 363 }\r
 364 \r
 365 \r
 366 static void vidResetMode(void)\r
 367 {\r
 368         if (PicoOpt&0x10) {\r
 369                 gp2x_video_changemode(8);\r
 370         } else if (currentConfig.EmuOpt&0x80) {\r
 371                 gp2x_video_changemode(16);\r
 372                 PicoDrawSetColorFormat(1);\r
 373                 PicoScanBegin = EmuScanBegin16;\r
 374         } else {\r
 375                 gp2x_video_changemode(8);\r
 376                 PicoDrawSetColorFormat(2);\r
 377                 PicoScanBegin = EmuScanBegin8;\r
 378         }\r
 379         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 380                 // setup pal for 8-bit modes\r
 381                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 382                 localPal[0xd0] = 0x00c00000;\r
 383                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 384                 localPal[0xf0] = 0x00ffffff;\r
 385                 gp2x_video_setpalette(localPal, 0x100);\r
 386                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 387                 gp2x_video_flip();\r
 388         }\r
 389         Pico.m.dirtyPal = 1;\r
 390         // reset scaling\r
 391         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 392              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 393         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 394 }\r
 395 \r
 396 \r
 397 static void emu_msg_cb(const char *msg)\r
 398 {\r
 399         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 400                 // 8-bit renderers\r
 401                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 402                 osd_text(4, 232, msg);\r
 403                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
 404         } else {\r
 405                 // 16bit accurate renderer\r
 406                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 407                 osd_text(4, 232, msg);\r
 408                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
 409         }\r
 410         gettimeofday(&noticeMsgTime, 0);\r
 411         noticeMsgTime.tv_sec -= 2;\r
 412 \r
 413         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 414         reset_timing = 1;\r
 415 }\r
 416 \r
 417 static void emu_state_cb(const char *str)\r
 418 {\r
 419         clearArea(0);\r
 420         blit("", str);\r
 421 }\r
 422 \r
 423 static void emu_msg_tray_open(void)\r
 424 {\r
 425         strcpy(noticeMsg, "CD tray opened");\r
 426         gettimeofday(&noticeMsgTime, 0);\r
 427 }\r
 428 \r
 429 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 430 {\r
 431         int ret, px, py, lim_x;\r
 432         static int pdown_frames = 0;\r
 433 \r
 434         emu_RunEventsPico(events);\r
 435 \r
 436         if (pico_inp_mode == 0) return;\r
 437 \r
 438         // for F200\r
 439         ret = gp2x_touchpad_read(&px, &py);\r
 440         if (ret >= 0)\r
 441         {\r
 442                 if (ret > 35000)\r
 443                 {\r
 444                         if (pdown_frames++ > 5)\r
 445                                 PicoPad[0] |= 0x20;\r
 446 \r
 447                         pico_pen_x = px;\r
 448                         pico_pen_y = py;\r
 449                         if (!(Pico.video.reg[12]&1)) {\r
 450                                 pico_pen_x -= 32;\r
 451                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 452                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 453                         }\r
 454                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 455                 }\r
 456                 else\r
 457                         pdown_frames = 0;\r
 458 \r
 459                 //if (ret == 0)\r
 460                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 461         }\r
 462 \r
 463         PicoPad[0] &= ~0x0f; // release UDLR\r
 464         if (gp2x_keys & GP2X_UP)    pico_pen_y--;\r
 465         if (gp2x_keys & GP2X_DOWN)  pico_pen_y++;\r
 466         if (gp2x_keys & GP2X_LEFT)  pico_pen_x--;\r
 467         if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
 468 \r
 469         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 470         if (pico_pen_y < 8) pico_pen_y = 8;\r
 471         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 472         if (pico_pen_x < 0) pico_pen_x = 0;\r
 473         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 474 \r
 475         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 476         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 477         PicoPicohw.pen_pos[0] += 0x3c;\r
 478         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 479 }\r
 480 \r
 481 static void update_volume(int has_changed, int is_up)\r
 482 {\r
 483         static int prev_frame = 0, wait_frames = 0;\r
 484         int vol = currentConfig.volume;\r
 485 \r
 486         if (has_changed)\r
 487         {\r
 488                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 489                         wait_frames++;\r
 490                 else {\r
 491                         if (is_up) {\r
 492                                 if (vol < 99) vol++;\r
 493                         } else {\r
 494                                 if (vol >  0) vol--;\r
 495                         }\r
 496                         wait_frames = 0;\r
 497                         gp2x_sound_volume(vol, vol);\r
 498                         currentConfig.volume = vol;\r
 499                 }\r
 500                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 501                 gettimeofday(&noticeMsgTime, 0);\r
 502                 prev_frame = Pico.m.frame_count;\r
 503         }\r
 504 \r
 505         // set the right mixer func\r
 506         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 507         if (vol >= 5)\r
 508                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 509         else {\r
 510                 mix_32_to_16l_level = 5 - vol;\r
 511                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 512         }\r
 513 }\r
 514 \r
 515 static void RunEvents(unsigned int which)\r
 516 {\r
 517         if (which & 0x1800) // save or load (but not both)\r
 518         {\r
 519                 int do_it = 1;\r
 520                 if ( emu_checkSaveFile(state_slot) &&\r
 521                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 522                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 523                         unsigned long keys;\r
 524                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 525                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 526                                 usleep(50*1024);\r
 527                         if (keys & GP2X_X) do_it = 0;\r
 528                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 529                                 usleep(50*1024);\r
 530                         clearArea(0);\r
 531                 }\r
 532                 if (do_it) {\r
 533                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 534                         PicoStateProgressCB = emu_state_cb;\r
 535                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 536                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 537                         PicoStateProgressCB = NULL;\r
 538                 }\r
 539 \r
 540                 reset_timing = 1;\r
 541         }\r
 542         if (which & 0x0400) // switch renderer\r
 543         {\r
 544                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 545                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 546                 else   currentConfig.EmuOpt &= ~0x80;\r
 547 \r
 548                 vidResetMode();\r
 549 \r
 550                 if (PicoOpt&0x10) {\r
 551                         strcpy(noticeMsg, " 8bit fast renderer");\r
 552                 } else if (currentConfig.EmuOpt&0x80) {\r
 553                         strcpy(noticeMsg, "16bit accurate renderer");\r
 554                 } else {\r
 555                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 556                 }\r
 557 \r
 558                 gettimeofday(&noticeMsgTime, 0);\r
 559         }\r
 560         if (which & 0x0300)\r
 561         {\r
 562                 if(which&0x0200) {\r
 563                         state_slot -= 1;\r
 564                         if(state_slot < 0) state_slot = 9;\r
 565                 } else {\r
 566                         state_slot += 1;\r
 567                         if(state_slot > 9) state_slot = 0;\r
 568                 }\r
 569                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 570                 gettimeofday(&noticeMsgTime, 0);\r
 571         }\r
 572         if (which & 0x0080) {\r
 573                 engineState = PGS_Menu;\r
 574         }\r
 575 }\r
 576 \r
 577 static void updateKeys(void)\r
 578 {\r
 579         unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
 580         static unsigned int prevEvents = 0;\r
 581         int joy, i;\r
 582 \r
 583         keys = gp2x_joystick_read(0);\r
 584         if (keys & GP2X_SELECT) {\r
 585                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 586                 // wait until select is released, so menu would not resume game\r
 587                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 588         }\r
 589 \r
 590         keys &= CONFIGURABLE_KEYS;\r
 591         keys2 = keys;\r
 592 \r
 593         for (i = 0; i < 32; i++)\r
 594         {\r
 595                 if (keys2 & (1 << i))\r
 596                 {\r
 597                         int pl, acts = currentConfig.KeyBinds[i];\r
 598                         if (!acts) continue;\r
 599                         pl = (acts >> 16) & 1;\r
 600                         if (kb_combo_keys & (1 << i))\r
 601                         {\r
 602                                 int u = i+1, acts_c = acts & kb_combo_acts;\r
 603                                 // let's try to find the other one\r
 604                                 if (acts_c) {\r
 605                                         for (; u < 32; u++)\r
 606                                                 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
 607                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
 608                                                         keys2 &= ~((1 << i) | (1 << u));\r
 609                                                         break;\r
 610                                                 }\r
 611                                 }\r
 612                                 // add non-combo actions if combo ones were not found\r
 613                                 if (!acts_c || u == 32)\r
 614                                         allActions[pl] |= acts & ~kb_combo_acts;\r
 615                         } else {\r
 616                                 allActions[pl] |= acts;\r
 617                         }\r
 618                 }\r
 619         }\r
 620 \r
 621         // add joy inputs\r
 622         if (num_of_joys > 0)\r
 623         {\r
 624                 gp2x_usbjoy_update();\r
 625                 for (joy = 0; joy < num_of_joys; joy++) {\r
 626                         int btns = gp2x_usbjoy_check2(joy);\r
 627                         for (i = 0; i < 32; i++) {\r
 628                                 if (btns & (1 << i)) {\r
 629                                         int acts = currentConfig.JoyBinds[joy][i];\r
 630                                         int pl = (acts >> 16) & 1;\r
 631                                         allActions[pl] |= acts;\r
 632                                 }\r
 633                         }\r
 634                 }\r
 635         }\r
 636 \r
 637         PicoPad[0] = allActions[0] & 0xfff;\r
 638         PicoPad[1] = allActions[1] & 0xfff;\r
 639 \r
 640         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 641         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 642 \r
 643         events = (allActions[0] | allActions[1]) >> 16;\r
 644 \r
 645         // volume is treated in special way and triggered every frame\r
 646         if (events & 0x6000)\r
 647                 update_volume(1, events & 0x2000);\r
 648 \r
 649         if ((events ^ prevEvents) & 0x40) {\r
 650                 emu_changeFastForward(events & 0x40);\r
 651                 update_volume(0, 0);\r
 652                 reset_timing = 1;\r
 653         }\r
 654 \r
 655         events &= ~prevEvents;\r
 656 \r
 657         if (PicoAHW == PAHW_PICO)\r
 658                 RunEventsPico(events, keys);\r
 659         if (events) RunEvents(events);\r
 660         if (movie_data) emu_updateMovie();\r
 661 \r
 662         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 663 }\r
 664 \r
 665 \r
 666 static void updateSound(int len)\r
 667 {\r
 668         if (PicoOpt&8) len<<=1;\r
 669 \r
 670         /* avoid writing audio when lagging behind to prevent audio lag */\r
 671         if (PicoSkipFrame != 2)\r
 672                 gp2x_sound_write(PsndOut, len<<1);\r
 673 }\r
 674 \r
 675 \r
 676 static void SkipFrame(int do_audio)\r
 677 {\r
 678         PicoSkipFrame=do_audio ? 1 : 2;\r
 679         PicoFrame();\r
 680         PicoSkipFrame=0;\r
 681 }\r
 682 \r
 683 \r
 684 void emu_forcedFrame(int opts)\r
 685 {\r
 686         int po_old = PicoOpt;\r
 687         int eo_old = currentConfig.EmuOpt;\r
 688 \r
 689         PicoOpt &= ~0x10;\r
 690         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 691         currentConfig.EmuOpt |= 0x80;\r
 692 \r
 693         //vidResetMode();\r
 694         PicoDrawSetColorFormat(1);\r
 695         PicoScanBegin = EmuScanBegin16;\r
 696         Pico.m.dirtyPal = 1;\r
 697         PicoFrameDrawOnly();\r
 698 \r
 699 /*\r
 700         if (!(Pico.video.reg[12]&1)) {\r
 701                 vidCpyM2 = vidCpyM2_32col;\r
 702                 clearArea(1);\r
 703         } else  vidCpyM2 = vidCpyM2_40col;\r
 704 \r
 705         vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 706         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 707         gp2x_video_setpalette(localPal, 0x40);\r
 708 */\r
 709         PicoOpt = po_old;\r
 710         currentConfig.EmuOpt = eo_old;\r
 711 }\r
 712 \r
 713 void emu_platformDebugCat(char *str)\r
 714 {\r
 715         // nothing\r
 716 }\r
 717 \r
 718 static void simpleWait(int thissec, int lim_time)\r
 719 {\r
 720         struct timeval tval;\r
 721 \r
 722         spend_cycles(1024);\r
 723         gettimeofday(&tval, 0);\r
 724         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 725 \r
 726         while (tval.tv_usec < lim_time)\r
 727         {\r
 728                 spend_cycles(1024);\r
 729                 gettimeofday(&tval, 0);\r
 730                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 731         }\r
 732 }\r
 733 \r
 734 \r
 735 #if 0\r
 736 static void tga_dump(void)\r
 737 {\r
 738 #define BYTE unsigned char\r
 739 #define WORD unsigned short\r
 740         struct\r
 741         {\r
 742                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
 743                 BYTE ColorMapType;    /* 01h  Color map type */\r
 744                 BYTE ImageType;       /* 02h  Image type code */\r
 745                 WORD CMapStart;       /* 03h  Color map origin */\r
 746                 WORD CMapLength;      /* 05h  Color map length */\r
 747                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
 748                 WORD XOffset;         /* 08h  X origin of image */\r
 749                 WORD YOffset;         /* 0Ah  Y origin of image */\r
 750                 WORD Width;           /* 0Ch  Width of image */\r
 751                 WORD Height;          /* 0Eh  Height of image */\r
 752                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
 753                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
 754         } __attribute__((packed)) TGAHEAD;\r
 755         static unsigned short oldscr[320*240];\r
 756         FILE *f; char name[128]; int i;\r
 757 \r
 758         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
 759         TGAHEAD.ImageType = 2;\r
 760         TGAHEAD.Width = 320;\r
 761         TGAHEAD.Height = 240;\r
 762         TGAHEAD.PixelDepth = 16;\r
 763         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
 764 \r
 765 #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
 766 \r
 767         for (i = 0; i < 320*240; i++)\r
 768                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
 769         if (i < 320*240)\r
 770         {\r
 771                 for (i = 0; i < 320*240; i++)\r
 772                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
 773                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
 774                 f = fopen(name, "wb");\r
 775                 if (!f) { printf("!f\n"); exit(1); }\r
 776                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
 777                 fwrite(oldscr, 1, 320*240*2, f);\r
 778                 fclose(f);\r
 779         }\r
 780 }\r
 781 #endif\r
 782 \r
 783 \r
 784 void emu_Loop(void)\r
 785 {\r
 786         static int gp2x_old_clock = 200;\r
 787         static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;\r
 788         char fpsbuff[24]; // fps count c string\r
 789         struct timeval tval; // timing\r
 790         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 791         int  frames_done,  frames_shown,  thissec; // actual frames\r
 792         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 793         char *notice = 0;\r
 794 \r
 795         printf("entered emu_Loop()\n");\r
 796 \r
 797         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 798                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 799                 set_FCLK(currentConfig.CPUclock);\r
 800                 gp2x_old_clock = currentConfig.CPUclock;\r
 801                 printf(" done\n");\r
 802         }\r
 803 \r
 804         if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
 805                 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 806                 gp2x_old_gamma = currentConfig.gamma;\r
 807                 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 808         }\r
 809 \r
 810         if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
 811                 if (currentConfig.EmuOpt&0x2000)\r
 812                      set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
 813                 else unset_LCD_custom_rate();\r
 814         }\r
 815 \r
 816         EmuOpt_old = currentConfig.EmuOpt;\r
 817         fpsbuff[0] = 0;\r
 818 \r
 819         // make sure we are in correct mode\r
 820         vidResetMode();\r
 821         scaling_update();\r
 822         Pico.m.dirtyPal = 1;\r
 823         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 824         emu_findKeyBindCombos();\r
 825 \r
 826         // pal/ntsc might have changed, reset related stuff\r
 827         target_fps = Pico.m.pal ? 50 : 60;\r
 828         target_frametime = 1000000/target_fps;\r
 829         reset_timing = 1;\r
 830 \r
 831         // prepare sound stuff\r
 832         if (currentConfig.EmuOpt & 4)\r
 833         {\r
 834                 int snd_excess_add;\r
 835                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
 836                                 ((PicoOpt&0x200) && crashed_940)) {\r
 837                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 838                 }\r
 839                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 840                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 841                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 842                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 843                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 844                 PicoWriteSound = updateSound;\r
 845                 update_volume(0, 0);\r
 846                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 847                 PsndOut = sndBuffer;\r
 848                 PsndRate_old = PsndRate;\r
 849                 PicoOpt_old  = PicoOpt;\r
 850                 pal_old = Pico.m.pal;\r
 851         } else {\r
 852                 PsndOut = NULL;\r
 853         }\r
 854 \r
 855         // prepare CD buffer\r
 856         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 857 \r
 858         // calc vsync offset to sync timing code with vsync\r
 859         if (currentConfig.EmuOpt&0x2000) {\r
 860                 gettimeofday(&tval, 0);\r
 861                 gp2x_video_wait_vsync();\r
 862                 gettimeofday(&tval, 0);\r
 863                 vsync_offset = tval.tv_usec;\r
 864                 while (vsync_offset >= target_frametime)\r
 865                         vsync_offset -= target_frametime;\r
 866                 if (!vsync_offset) vsync_offset++;\r
 867                 printf("vsync_offset: %i\n", vsync_offset);\r
 868         } else\r
 869                 vsync_offset = 0;\r
 870 \r
 871         frames_done = frames_shown = thissec =\r
 872         pframes_done = pframes_shown = pthissec = 0;\r
 873 \r
 874         // loop\r
 875         while (engineState == PGS_Running)\r
 876         {\r
 877                 int modes;\r
 878 \r
 879                 gettimeofday(&tval, 0);\r
 880                 if (reset_timing) {\r
 881                         reset_timing = 0;\r
 882                         pthissec = tval.tv_sec;\r
 883                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 884                 }\r
 885 \r
 886                 // show notice message?\r
 887                 if (noticeMsgTime.tv_sec)\r
 888                 {\r
 889                         static int noticeMsgSum;\r
 890                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 891                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 892                                 clearArea(0);\r
 893                                 notice = 0;\r
 894                         } else {\r
 895                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 896                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 897                                 notice = noticeMsg;\r
 898                         }\r
 899                 }\r
 900 \r
 901                 // check for mode changes\r
 902                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 903                 if (modes != oldmodes)\r
 904                 {\r
 905                         int scalex = 320;\r
 906                         osd_fps_x = OSD_FPS_X;\r
 907                         if (modes & 4) {\r
 908                                 vidCpyM2 = vidCpyM2_40col;\r
 909                         } else {\r
 910                                 if (PicoOpt & 0x100) {\r
 911                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 912                                         scalex = 256;\r
 913                                         osd_fps_x = OSD_FPS_X - 64;\r
 914                                 } else {\r
 915                                         vidCpyM2 = vidCpyM2_32col;\r
 916                                 }\r
 917                         }\r
 918                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 919                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 920                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 921                         oldmodes = modes;\r
 922                         clearArea(1);\r
 923                 }\r
 924 \r
 925                 // second changed?\r
 926                 if (thissec != tval.tv_sec)\r
 927                 {\r
 928 #ifdef BENCHMARK\r
 929                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 930                         if (++bench == 10) {\r
 931                                 bench = 0;\r
 932                                 bench_fps_s = bench_fps;\r
 933                                 bf[bfp++ & 3] = bench_fps;\r
 934                                 bench_fps = 0;\r
 935                         }\r
 936                         bench_fps += frames_shown;\r
 937                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 938 #else\r
 939                         if (currentConfig.EmuOpt & 2) {\r
 940                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 941                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 942                         }\r
 943 #endif\r
 944                         frames_shown = frames_done = 0;\r
 945                         thissec = tval.tv_sec;\r
 946                 }\r
 947 #ifdef PFRAMES\r
 948                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 949 #endif\r
 950 \r
 951                 if (pthissec != tval.tv_sec)\r
 952                 {\r
 953                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 954                                 pframes_done = pframes_shown = 0;\r
 955                         } else {\r
 956                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 957                                 // when second changes, but we don't want buffer to starve.\r
 958                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 959                                         updateKeys();\r
 960                                         SkipFrame(1); pframes_done++;\r
 961                                 }\r
 962 \r
 963                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 964                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 965                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 966                         }\r
 967                         pthissec = tval.tv_sec;\r
 968                 }\r
 969 \r
 970                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 971                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 972                 {\r
 973                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 974                                 updateKeys();\r
 975                                 SkipFrame(1); pframes_done++; frames_done++;\r
 976                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 977                                         gettimeofday(&tval, 0);\r
 978                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 979                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 980                                                 simpleWait(pthissec, lim_time);\r
 981                                         }\r
 982                                 }\r
 983                                 lim_time += target_frametime;\r
 984                         }\r
 985                 }\r
 986                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 987                 {\r
 988                         // no time left for this frame - skip\r
 989                         if (tval.tv_usec - lim_time >= 300000) {\r
 990                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 991                                  * try to recover by resetting timing... */\r
 992                                 reset_timing = 1;\r
 993                                 continue;\r
 994                         }\r
 995                         updateKeys();\r
 996                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
 997                         continue;\r
 998                 }\r
 999 \r
1000                 updateKeys();\r
1001                 PicoFrame();\r
1002 \r
1003                 // check time\r
1004                 gettimeofday(&tval, 0);\r
1005                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1006 \r
1007                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
1008                         reset_timing = 1;\r
1009                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1010                 {\r
1011                         // sleep or vsync if we are still too fast\r
1012                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1013                         if (!reset_timing && tval.tv_usec < lim_time)\r
1014                         {\r
1015                                 // we are too fast\r
1016                                 if (vsync_offset) {\r
1017                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
1018                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
1019                                         gp2x_video_wait_vsync();\r
1020                                 } else {\r
1021                                         simpleWait(pthissec, lim_time);\r
1022                                 }\r
1023                         }\r
1024                 }\r
1025 \r
1026                 blit(fpsbuff, notice);\r
1027 \r
1028                 pframes_done++; pframes_shown++;\r
1029                  frames_done++;  frames_shown++;\r
1030         }\r
1031 \r
1032         emu_changeFastForward(0);\r
1033 \r
1034         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1035 \r
1036         // save SRAM\r
1037         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1038                 emu_state_cb("Writing SRAM/BRAM..");\r
1039                 emu_SaveLoadGame(0, 1);\r
1040                 SRam.changed = 0;\r
1041         }\r
1042 \r
1043         // if in 8bit mode, generate 16bit image for menu background\r
1044         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1045                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1046 }\r
1047 \r
1048 \r
1049 void emu_ResetGame(void)\r
1050 {\r
1051         PicoReset();\r
1052         reset_timing = 1;\r
1053 }\r
1054 \r