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