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 "menu.h"\r
  20 #include "../linux/usbjoy.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 "../common/input.h"\r
  26 #include "../linux/sndout_oss.h"\r
  27 #include "cpuctrl.h"\r
  28 \r
  29 #include <pico/pico_int.h>\r
  30 #include <pico/patch.h>\r
  31 #include <pico/sound/mix.h>\r
  32 #include <zlib/zlib.h>\r
  33 \r
  34 //#define PFRAMES\r
  35 \r
  36 #ifdef BENCHMARK\r
  37 #define OSD_FPS_X 220\r
  38 #else\r
  39 #define OSD_FPS_X 260\r
  40 #endif\r
  41 \r
  42 \r
  43 int engineState;\r
  44 int select_exits = 0;\r
  45 \r
  46 char romFileName[PATH_MAX];\r
  47 \r
  48 extern int crashed_940;\r
  49 \r
  50 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  51 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  52 static int osd_fps_x;\r
  53 static int gp2x_old_gamma = 100;\r
  54 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  55 int reset_timing = 0;\r
  56 \r
  57 #define PICO_PEN_ADJUST_X 4\r
  58 #define PICO_PEN_ADJUST_Y 2\r
  59 static int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
  60 \r
  61 static void emu_msg_cb(const char *msg);\r
  62 static void emu_msg_tray_open(void);\r
  63 \r
  64 \r
  65 void emu_noticeMsgUpdated(void)\r
  66 {\r
  67         gettimeofday(&noticeMsgTime, 0);\r
  68 }\r
  69 \r
  70 int emu_getMainDir(char *dst, int len)\r
  71 {\r
  72         extern char **g_argv;\r
  73         int j;\r
  74 \r
  75         strncpy(dst, g_argv[0], len);\r
  76         len -= 32; // reserve\r
  77         if (len < 0) len = 0;\r
  78         dst[len] = 0;\r
  79         for (j = strlen(dst); j > 0; j--)\r
  80                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  81 \r
  82         return j + 1;\r
  83 }\r
  84 \r
  85 void emu_Init(void)\r
  86 {\r
  87         // make temp buffer for alt renderer\r
  88         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  89         if (!PicoDraw2FB)\r
  90         {\r
  91                 printf("PicoDraw2FB == 0\n");\r
  92         }\r
  93 \r
  94         // make dirs for saves, cfgs, etc.\r
  95         mkdir("mds", 0777);\r
  96         mkdir("srm", 0777);\r
  97         mkdir("brm", 0777);\r
  98         mkdir("cfg", 0777);\r
  99 \r
 100         PicoInit();\r
 101         PicoMessage = emu_msg_cb;\r
 102         PicoMCDopenTray = emu_msg_tray_open;\r
 103         PicoMCDcloseTray = menu_loop_tray;\r
 104 }\r
 105 \r
 106 \r
 107 static void scaling_update(void)\r
 108 {\r
 109         PicoOpt &= ~0x4100;\r
 110         switch (currentConfig.scaling) {\r
 111                 default: break; // off\r
 112                 case 1:  // hw hor\r
 113                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 114                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 115         }\r
 116 }\r
 117 \r
 118 \r
 119 void emu_Deinit(void)\r
 120 {\r
 121         // save SRAM\r
 122         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 123                 emu_SaveLoadGame(0, 1);\r
 124                 SRam.changed = 0;\r
 125         }\r
 126 \r
 127         if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG))\r
 128                 emu_writelrom();\r
 129 \r
 130         free(PicoDraw2FB);\r
 131 \r
 132         PicoExit();\r
 133 \r
 134         // restore gamma\r
 135         if (gp2x_old_gamma != 100)\r
 136                 set_gamma(100, 0);\r
 137 }\r
 138 \r
 139 void emu_prepareDefaultConfig(void)\r
 140 {\r
 141         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 142         defaultConfig.EmuOpt    = 0x9d | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
 143         defaultConfig.s_PicoOpt = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;\r
 144         defaultConfig.s_PsndRate = 44100;\r
 145         defaultConfig.s_PicoRegion = 0; // auto\r
 146         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 147         defaultConfig.s_PicoCDBuffers = 0;\r
 148         defaultConfig.Frameskip = -1; // auto\r
 149         defaultConfig.CPUclock = 200;\r
 150         defaultConfig.volume = 50;\r
 151         defaultConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 152         defaultConfig.KeyBinds[ 4] = 1<<1;\r
 153         defaultConfig.KeyBinds[ 2] = 1<<2;\r
 154         defaultConfig.KeyBinds[ 6] = 1<<3;\r
 155         defaultConfig.KeyBinds[14] = 1<<4;\r
 156         defaultConfig.KeyBinds[13] = 1<<5;\r
 157         defaultConfig.KeyBinds[12] = 1<<6;\r
 158         defaultConfig.KeyBinds[ 8] = 1<<7;\r
 159         defaultConfig.KeyBinds[15] = 1<<26; // switch rend\r
 160         defaultConfig.KeyBinds[10] = 1<<27; // save state\r
 161         defaultConfig.KeyBinds[11] = 1<<28; // load state\r
 162         defaultConfig.KeyBinds[23] = 1<<29; // vol up\r
 163         defaultConfig.KeyBinds[22] = 1<<30; // vol down\r
 164         defaultConfig.gamma = 100;\r
 165         defaultConfig.scaling = 0;\r
 166         defaultConfig.turbo_rate = 15;\r
 167 }\r
 168 \r
 169 void osd_text(int x, int y, const char *text)\r
 170 {\r
 171         int len = strlen(text)*8;\r
 172 \r
 173         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 174                 int *p, i, h;\r
 175                 x &= ~3; // align x\r
 176                 len = (len+3) >> 2;\r
 177                 for (h = 0; h < 8; h++) {\r
 178                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 179                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 180                 }\r
 181                 emu_textOut8(x, y, text);\r
 182         } else {\r
 183                 int *p, i, h;\r
 184                 x &= ~1; // align x\r
 185                 len = (len+1) >> 1;\r
 186                 for (h = 0; h < 8; h++) {\r
 187                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 188                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 189                 }\r
 190                 emu_textOut16(x, y, text);\r
 191         }\r
 192 }\r
 193 \r
 194 static void draw_cd_leds(void)\r
 195 {\r
 196 //      static\r
 197         int old_reg;\r
 198 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 199         old_reg = Pico_mcd->s68k_regs[0];\r
 200 \r
 201         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 202                 // 8-bit modes\r
 203                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 204                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 205                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 206                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 207                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 208                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 209                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 210                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 211         } else {\r
 212                 // 16-bit modes\r
 213                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 214                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 215                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 216                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 217                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 218                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 219         }\r
 220 }\r
 221 \r
 222 static void draw_pico_ptr(void)\r
 223 {\r
 224         unsigned short *p = (unsigned short *)gp2x_screen;\r
 225 \r
 226         // only if pen enabled and for 16bit modes\r
 227         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 228 \r
 229         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 230                 p += 32;\r
 231 \r
 232         p += 320 * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 233         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 234         p[0]   ^= 0xffff;\r
 235         p[319] ^= 0xffff;\r
 236         p[320] ^= 0xffff;\r
 237         p[321] ^= 0xffff;\r
 238         p[640] ^= 0xffff;\r
 239 }\r
 240 \r
 241 static int EmuScanBegin16(unsigned int num)\r
 242 {\r
 243         if (!(Pico.video.reg[1]&8)) num += 8;\r
 244         DrawLineDest = (unsigned short *) gp2x_screen + 320 * num;\r
 245 \r
 246         return 0;\r
 247 }\r
 248 \r
 249 static int EmuScanBegin8(unsigned int num)\r
 250 {\r
 251         if (!(Pico.video.reg[1]&8)) num += 8;\r
 252         DrawLineDest = (unsigned char *)  gp2x_screen + 320 * num;\r
 253 \r
 254         return 0;\r
 255 }\r
 256 \r
 257 int localPal[0x100];\r
 258 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 259 \r
 260 static void blit(const char *fps, const char *notice)\r
 261 {\r
 262         int emu_opt = currentConfig.EmuOpt;\r
 263 \r
 264         if (PicoOpt&0x10)\r
 265         {\r
 266                 // 8bit fast renderer\r
 267                 if (Pico.m.dirtyPal) {\r
 268                         Pico.m.dirtyPal = 0;\r
 269                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 270                         // feed new palette to our device\r
 271                         gp2x_video_setpalette(localPal, 0x40);\r
 272                 }\r
 273                 // a hack for VR\r
 274                 if (PicoRead16Hook == PicoSVPRead16)\r
 275                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 276                 // do actual copy\r
 277                 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 278         }\r
 279         else if (!(emu_opt&0x80))\r
 280         {\r
 281                 // 8bit accurate renderer\r
 282                 if (Pico.m.dirtyPal)\r
 283                 {\r
 284                         int pallen = 0xc0;\r
 285                         Pico.m.dirtyPal = 0;\r
 286                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 287                         {\r
 288                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 289                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 290                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 291                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 292                                 pallen = 0x100;\r
 293                         }\r
 294                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 295                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 296                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 297                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 298                         }\r
 299                         else {\r
 300                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 301                                 memcpy32(localPal+0x80, localPal, 0x40); // for spr prio mess\r
 302                         }\r
 303                         if (pallen > 0xc0) {\r
 304                                 localPal[0xc0] = 0x0000c000;\r
 305                                 localPal[0xd0] = 0x00c00000;\r
 306                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 307                                 localPal[0xf0] = 0x00ffffff;\r
 308                         }\r
 309                         gp2x_video_setpalette(localPal, pallen);\r
 310                 }\r
 311         }\r
 312 \r
 313         if (notice || (emu_opt & 2)) {\r
 314                 int h = 232;\r
 315                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
 316                 if (notice) osd_text(4, h, notice);\r
 317                 if (emu_opt & 2)\r
 318                         osd_text(osd_fps_x, h, fps);\r
 319         }\r
 320         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 321                 draw_cd_leds();\r
 322         if (PicoAHW & PAHW_PICO)\r
 323                 draw_pico_ptr();\r
 324 \r
 325         //gp2x_video_wait_vsync();\r
 326         gp2x_video_flip();\r
 327 \r
 328         if (!(PicoOpt&0x10)) {\r
 329                 if (!(Pico.video.reg[1]&8)) {\r
 330                         if (currentConfig.EmuOpt&0x80) {\r
 331                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 332                         } else {\r
 333                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 334                         }\r
 335                 } else {\r
 336                         DrawLineDest = gp2x_screen;\r
 337                 }\r
 338         }\r
 339 }\r
 340 \r
 341 \r
 342 // clears whole screen or just the notice area (in all buffers)\r
 343 static void clearArea(int full)\r
 344 {\r
 345         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 346                 // 8-bit renderers\r
 347                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 348                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 349         } else {\r
 350                 // 16bit accurate renderer\r
 351                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 352                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 353         }\r
 354 }\r
 355 \r
 356 \r
 357 static void vidResetMode(void)\r
 358 {\r
 359         if (PicoOpt&0x10) {\r
 360                 gp2x_video_changemode(8);\r
 361         } else if (currentConfig.EmuOpt&0x80) {\r
 362                 gp2x_video_changemode(16);\r
 363                 PicoDrawSetColorFormat(1);\r
 364                 PicoScanBegin = EmuScanBegin16;\r
 365         } else {\r
 366                 gp2x_video_changemode(8);\r
 367                 PicoDrawSetColorFormat(2);\r
 368                 PicoScanBegin = EmuScanBegin8;\r
 369         }\r
 370         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 371                 // setup pal for 8-bit modes\r
 372                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 373                 localPal[0xd0] = 0x00c00000;\r
 374                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 375                 localPal[0xf0] = 0x00ffffff;\r
 376                 gp2x_video_setpalette(localPal, 0x100);\r
 377                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 378                 gp2x_video_flip();\r
 379         }\r
 380         Pico.m.dirtyPal = 1;\r
 381         // reset scaling\r
 382         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 383              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 384         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 385 }\r
 386 \r
 387 \r
 388 static void emu_msg_cb(const char *msg)\r
 389 {\r
 390         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 391                 // 8-bit renderers\r
 392                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 393                 osd_text(4, 232, msg);\r
 394                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
 395         } else {\r
 396                 // 16bit accurate renderer\r
 397                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 398                 osd_text(4, 232, msg);\r
 399                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
 400         }\r
 401         gettimeofday(&noticeMsgTime, 0);\r
 402         noticeMsgTime.tv_sec -= 2;\r
 403 \r
 404         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 405         reset_timing = 1;\r
 406 }\r
 407 \r
 408 static void emu_state_cb(const char *str)\r
 409 {\r
 410         clearArea(0);\r
 411         blit("", str);\r
 412 }\r
 413 \r
 414 static void emu_msg_tray_open(void)\r
 415 {\r
 416         strcpy(noticeMsg, "CD tray opened");\r
 417         gettimeofday(&noticeMsgTime, 0);\r
 418 }\r
 419 \r
 420 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 421 {\r
 422         int ret, px, py, lim_x;\r
 423         static int pdown_frames = 0;\r
 424 \r
 425         emu_RunEventsPico(events);\r
 426 \r
 427         if (pico_inp_mode == 0) return;\r
 428 \r
 429         // for F200\r
 430         ret = gp2x_touchpad_read(&px, &py);\r
 431         if (ret >= 0)\r
 432         {\r
 433                 if (ret > 35000)\r
 434                 {\r
 435                         if (pdown_frames++ > 5)\r
 436                                 PicoPad[0] |= 0x20;\r
 437 \r
 438                         pico_pen_x = px;\r
 439                         pico_pen_y = py;\r
 440                         if (!(Pico.video.reg[12]&1)) {\r
 441                                 pico_pen_x -= 32;\r
 442                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 443                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 444                         }\r
 445                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 446                 }\r
 447                 else\r
 448                         pdown_frames = 0;\r
 449 \r
 450                 //if (ret == 0)\r
 451                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 452         }\r
 453 \r
 454         PicoPad[0] &= ~0x0f; // release UDLR\r
 455         if (gp2x_keys & GP2X_UP)    pico_pen_y--;\r
 456         if (gp2x_keys & GP2X_DOWN)  pico_pen_y++;\r
 457         if (gp2x_keys & GP2X_LEFT)  pico_pen_x--;\r
 458         if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
 459 \r
 460         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 461         if (pico_pen_y < 8) pico_pen_y = 8;\r
 462         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 463         if (pico_pen_x < 0) pico_pen_x = 0;\r
 464         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 465 \r
 466         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 467         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 468         PicoPicohw.pen_pos[0] += 0x3c;\r
 469         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 470 }\r
 471 \r
 472 static void update_volume(int has_changed, int is_up)\r
 473 {\r
 474         static int prev_frame = 0, wait_frames = 0;\r
 475         int vol = currentConfig.volume;\r
 476 \r
 477         if (has_changed)\r
 478         {\r
 479                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 480                         wait_frames++;\r
 481                 else {\r
 482                         if (is_up) {\r
 483                                 if (vol < 99) vol++;\r
 484                         } else {\r
 485                                 if (vol >  0) vol--;\r
 486                         }\r
 487                         wait_frames = 0;\r
 488                         sndout_oss_setvol(vol, vol);\r
 489                         currentConfig.volume = vol;\r
 490                 }\r
 491                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 492                 gettimeofday(&noticeMsgTime, 0);\r
 493                 prev_frame = Pico.m.frame_count;\r
 494         }\r
 495 \r
 496         // set the right mixer func\r
 497         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 498         if (vol >= 5)\r
 499                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 500         else {\r
 501                 mix_32_to_16l_level = 5 - vol;\r
 502                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 503         }\r
 504 }\r
 505 \r
 506 static void RunEvents(unsigned int which)\r
 507 {\r
 508         if (which & 0x1800) // save or load (but not both)\r
 509         {\r
 510                 int do_it = 1;\r
 511                 if ( emu_checkSaveFile(state_slot) &&\r
 512                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 513                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 514                         unsigned long keys;\r
 515                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 516                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 517                                 usleep(50*1024);\r
 518                         if (keys & GP2X_X) do_it = 0;\r
 519                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 520                                 usleep(50*1024);\r
 521                         clearArea(0);\r
 522                 }\r
 523                 if (do_it) {\r
 524                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 525                         PicoStateProgressCB = emu_state_cb;\r
 526                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 527                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 528                         PicoStateProgressCB = NULL;\r
 529                 }\r
 530 \r
 531                 reset_timing = 1;\r
 532         }\r
 533         if (which & 0x0400) // switch renderer\r
 534         {\r
 535                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 536                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 537                 else   currentConfig.EmuOpt &= ~0x80;\r
 538 \r
 539                 vidResetMode();\r
 540 \r
 541                 if (PicoOpt&0x10) {\r
 542                         strcpy(noticeMsg, " 8bit fast renderer");\r
 543                 } else if (currentConfig.EmuOpt&0x80) {\r
 544                         strcpy(noticeMsg, "16bit accurate renderer");\r
 545                 } else {\r
 546                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 547                 }\r
 548 \r
 549                 gettimeofday(&noticeMsgTime, 0);\r
 550         }\r
 551         if (which & 0x0300)\r
 552         {\r
 553                 if(which&0x0200) {\r
 554                         state_slot -= 1;\r
 555                         if(state_slot < 0) state_slot = 9;\r
 556                 } else {\r
 557                         state_slot += 1;\r
 558                         if(state_slot > 9) state_slot = 0;\r
 559                 }\r
 560                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 561                 gettimeofday(&noticeMsgTime, 0);\r
 562         }\r
 563         if (which & 0x0080) {\r
 564                 engineState = PGS_Menu;\r
 565         }\r
 566 }\r
 567 \r
 568 static void updateKeys(void)\r
 569 {\r
 570         unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
 571         static unsigned int prevEvents = 0;\r
 572         int joy, i;\r
 573 \r
 574         keys = gp2x_joystick_read(0);\r
 575         if (keys & GP2X_SELECT) {\r
 576                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 577                 // wait until select is released, so menu would not resume game\r
 578                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 579         }\r
 580 \r
 581         keys &= CONFIGURABLE_KEYS;\r
 582         keys2 = keys;\r
 583 \r
 584 #if 1\r
 585         /* FIXME: combos, player2 */\r
 586         allActions[0] = in_update();\r
 587 #else\r
 588         for (i = 0; i < 32; i++)\r
 589         {\r
 590                 if (keys2 & (1 << i))\r
 591                 {\r
 592                         int pl, acts = currentConfig.KeyBinds[i];\r
 593                         if (!acts) continue;\r
 594                         pl = (acts >> 16) & 1;\r
 595                         if (kb_combo_keys & (1 << i))\r
 596                         {\r
 597                                 int u = i+1, acts_c = acts & kb_combo_acts;\r
 598                                 // let's try to find the other one\r
 599                                 if (acts_c) {\r
 600                                         for (; u < 32; u++)\r
 601                                                 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
 602                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
 603                                                         keys2 &= ~((1 << i) | (1 << u));\r
 604                                                         break;\r
 605                                                 }\r
 606                                 }\r
 607                                 // add non-combo actions if combo ones were not found\r
 608                                 if (!acts_c || u == 32)\r
 609                                         allActions[pl] |= acts & ~kb_combo_acts;\r
 610                         } else {\r
 611                                 allActions[pl] |= acts;\r
 612                         }\r
 613                 }\r
 614         }\r
 615 #endif\r
 616 \r
 617         // add joy inputs\r
 618         if (num_of_joys > 0)\r
 619         {\r
 620                 usbjoy_update();\r
 621                 for (joy = 0; joy < num_of_joys; joy++) {\r
 622                         int btns = usbjoy_check2(joy);\r
 623                         for (i = 0; i < 32; i++) {\r
 624                                 if (btns & (1 << i)) {\r
 625                                         int acts = currentConfig.JoyBinds[joy][i];\r
 626                                         int pl = (acts >> 16) & 1;\r
 627                                         allActions[pl] |= acts;\r
 628                                 }\r
 629                         }\r
 630                 }\r
 631         }\r
 632 \r
 633         PicoPad[0] = allActions[0] & 0xfff;\r
 634         PicoPad[1] = allActions[1] & 0xfff;\r
 635 \r
 636         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 637         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 638 \r
 639         events = (allActions[0] | allActions[1]) >> 16;\r
 640 \r
 641         // volume is treated in special way and triggered every frame\r
 642         if (events & 0x6000)\r
 643                 update_volume(1, events & 0x2000);\r
 644 \r
 645         if ((events ^ prevEvents) & 0x40) {\r
 646                 emu_changeFastForward(events & 0x40);\r
 647                 update_volume(0, 0);\r
 648                 reset_timing = 1;\r
 649         }\r
 650 \r
 651         events &= ~prevEvents;\r
 652 \r
 653         if (PicoAHW == PAHW_PICO)\r
 654                 RunEventsPico(events, keys);\r
 655         if (events) RunEvents(events);\r
 656         if (movie_data) emu_updateMovie();\r
 657 \r
 658         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 659 }\r
 660 \r
 661 \r
 662 static void updateSound(int len)\r
 663 {\r
 664         if (PicoOpt&8) len<<=1;\r
 665 \r
 666         /* avoid writing audio when lagging behind to prevent audio lag */\r
 667         if (PicoSkipFrame != 2)\r
 668                 sndout_oss_write(PsndOut, len<<1);\r
 669 }\r
 670 \r
 671 void emu_startSound(void)\r
 672 {\r
 673         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
 674         int target_fps = Pico.m.pal ? 50 : 60;\r
 675 \r
 676         PsndOut = NULL;\r
 677 \r
 678         // prepare sound stuff\r
 679         if (currentConfig.EmuOpt & 4)\r
 680         {\r
 681                 int snd_excess_add;\r
 682                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
 683                                 ((PicoOpt&0x200) && crashed_940)) {\r
 684                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 685                 }\r
 686                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 687                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 688                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 689                 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
 690                 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
 691                 PicoWriteSound = updateSound;\r
 692                 update_volume(0, 0);\r
 693                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 694                 PsndOut = sndBuffer;\r
 695                 PsndRate_old = PsndRate;\r
 696                 PicoOpt_old  = PicoOpt;\r
 697                 pal_old = Pico.m.pal;\r
 698         }\r
 699 }\r
 700 \r
 701 void emu_endSound(void)\r
 702 {\r
 703 }\r
 704 \r
 705 /* wait until we can write more sound */\r
 706 void emu_waitSound(void)\r
 707 {\r
 708         // don't need to do anything, writes will block by themselves\r
 709 }\r
 710 \r
 711 \r
 712 static void SkipFrame(int do_audio)\r
 713 {\r
 714         PicoSkipFrame=do_audio ? 1 : 2;\r
 715         PicoFrame();\r
 716         PicoSkipFrame=0;\r
 717 }\r
 718 \r
 719 \r
 720 void emu_forcedFrame(int opts)\r
 721 {\r
 722         int po_old = PicoOpt;\r
 723         int eo_old = currentConfig.EmuOpt;\r
 724 \r
 725         PicoOpt &= ~0x10;\r
 726         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 727         currentConfig.EmuOpt |= 0x80;\r
 728 \r
 729         //vidResetMode();\r
 730         PicoDrawSetColorFormat(1);\r
 731         PicoScanBegin = EmuScanBegin16;\r
 732         Pico.m.dirtyPal = 1;\r
 733         PicoFrameDrawOnly();\r
 734 \r
 735 /*\r
 736         if (!(Pico.video.reg[12]&1)) {\r
 737                 vidCpyM2 = vidCpyM2_32col;\r
 738                 clearArea(1);\r
 739         } else  vidCpyM2 = vidCpyM2_40col;\r
 740 \r
 741         vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 742         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 743         gp2x_video_setpalette(localPal, 0x40);\r
 744 */\r
 745         PicoOpt = po_old;\r
 746         currentConfig.EmuOpt = eo_old;\r
 747 }\r
 748 \r
 749 void emu_platformDebugCat(char *str)\r
 750 {\r
 751         // nothing\r
 752 }\r
 753 \r
 754 static void simpleWait(int thissec, int lim_time)\r
 755 {\r
 756         struct timeval tval;\r
 757 \r
 758         spend_cycles(1024);\r
 759         gettimeofday(&tval, 0);\r
 760         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 761 \r
 762         while (tval.tv_usec < lim_time)\r
 763         {\r
 764                 spend_cycles(1024);\r
 765                 gettimeofday(&tval, 0);\r
 766                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 767         }\r
 768 }\r
 769 \r
 770 \r
 771 #if 0\r
 772 static void tga_dump(void)\r
 773 {\r
 774 #define BYTE unsigned char\r
 775 #define WORD unsigned short\r
 776         struct\r
 777         {\r
 778                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
 779                 BYTE ColorMapType;    /* 01h  Color map type */\r
 780                 BYTE ImageType;       /* 02h  Image type code */\r
 781                 WORD CMapStart;       /* 03h  Color map origin */\r
 782                 WORD CMapLength;      /* 05h  Color map length */\r
 783                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
 784                 WORD XOffset;         /* 08h  X origin of image */\r
 785                 WORD YOffset;         /* 0Ah  Y origin of image */\r
 786                 WORD Width;           /* 0Ch  Width of image */\r
 787                 WORD Height;          /* 0Eh  Height of image */\r
 788                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
 789                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
 790         } __attribute__((packed)) TGAHEAD;\r
 791         static unsigned short oldscr[320*240];\r
 792         FILE *f; char name[128]; int i;\r
 793 \r
 794         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
 795         TGAHEAD.ImageType = 2;\r
 796         TGAHEAD.Width = 320;\r
 797         TGAHEAD.Height = 240;\r
 798         TGAHEAD.PixelDepth = 16;\r
 799         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
 800 \r
 801 #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
 802 \r
 803         for (i = 0; i < 320*240; i++)\r
 804                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
 805         if (i < 320*240)\r
 806         {\r
 807                 for (i = 0; i < 320*240; i++)\r
 808                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
 809                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
 810                 f = fopen(name, "wb");\r
 811                 if (!f) { printf("!f\n"); exit(1); }\r
 812                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
 813                 fwrite(oldscr, 1, 320*240*2, f);\r
 814                 fclose(f);\r
 815         }\r
 816 }\r
 817 #endif\r
 818 \r
 819 \r
 820 void emu_Loop(void)\r
 821 {\r
 822         static int gp2x_old_clock = 200, EmuOpt_old = 0;\r
 823         char fpsbuff[24]; // fps count c string\r
 824         struct timeval tval; // timing\r
 825         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 826         int  frames_done,  frames_shown,  thissec; // actual frames\r
 827         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 828         char *notice = 0;\r
 829 \r
 830         printf("entered emu_Loop()\n");\r
 831 \r
 832         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 833                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 834                 set_FCLK(currentConfig.CPUclock);\r
 835                 gp2x_old_clock = currentConfig.CPUclock;\r
 836                 printf(" done\n");\r
 837         }\r
 838 \r
 839         if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
 840                 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 841                 gp2x_old_gamma = currentConfig.gamma;\r
 842                 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 843         }\r
 844 \r
 845         if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
 846                 if (currentConfig.EmuOpt&0x2000)\r
 847                      set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
 848                 else unset_LCD_custom_rate();\r
 849         }\r
 850 \r
 851         EmuOpt_old = currentConfig.EmuOpt;\r
 852         fpsbuff[0] = 0;\r
 853 \r
 854         // make sure we are in correct mode\r
 855         vidResetMode();\r
 856         scaling_update();\r
 857         Pico.m.dirtyPal = 1;\r
 858         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 859         emu_findKeyBindCombos();\r
 860 \r
 861         // pal/ntsc might have changed, reset related stuff\r
 862         target_fps = Pico.m.pal ? 50 : 60;\r
 863         target_frametime = 1000000/target_fps;\r
 864         reset_timing = 1;\r
 865 \r
 866         emu_startSound();\r
 867 \r
 868         // prepare CD buffer\r
 869         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 870 \r
 871         // calc vsync offset to sync timing code with vsync\r
 872         if (currentConfig.EmuOpt&0x2000) {\r
 873                 gettimeofday(&tval, 0);\r
 874                 gp2x_video_wait_vsync();\r
 875                 gettimeofday(&tval, 0);\r
 876                 vsync_offset = tval.tv_usec;\r
 877                 while (vsync_offset >= target_frametime)\r
 878                         vsync_offset -= target_frametime;\r
 879                 if (!vsync_offset) vsync_offset++;\r
 880                 printf("vsync_offset: %i\n", vsync_offset);\r
 881         } else\r
 882                 vsync_offset = 0;\r
 883 \r
 884         frames_done = frames_shown = thissec =\r
 885         pframes_done = pframes_shown = pthissec = 0;\r
 886 \r
 887         // loop\r
 888         while (engineState == PGS_Running)\r
 889         {\r
 890                 int modes;\r
 891 \r
 892                 gettimeofday(&tval, 0);\r
 893                 if (reset_timing) {\r
 894                         reset_timing = 0;\r
 895                         pthissec = tval.tv_sec;\r
 896                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 897                 }\r
 898 \r
 899                 // show notice message?\r
 900                 if (noticeMsgTime.tv_sec)\r
 901                 {\r
 902                         static int noticeMsgSum;\r
 903                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 904                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 905                                 clearArea(0);\r
 906                                 notice = 0;\r
 907                         } else {\r
 908                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 909                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 910                                 notice = noticeMsg;\r
 911                         }\r
 912                 }\r
 913 \r
 914                 // check for mode changes\r
 915                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 916                 if (modes != oldmodes)\r
 917                 {\r
 918                         int scalex = 320;\r
 919                         osd_fps_x = OSD_FPS_X;\r
 920                         if (modes & 4) {\r
 921                                 vidCpyM2 = vidCpyM2_40col;\r
 922                         } else {\r
 923                                 if (PicoOpt & 0x100) {\r
 924                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 925                                         scalex = 256;\r
 926                                         osd_fps_x = OSD_FPS_X - 64;\r
 927                                 } else {\r
 928                                         vidCpyM2 = vidCpyM2_32col;\r
 929                                 }\r
 930                         }\r
 931                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 932                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 933                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 934                         oldmodes = modes;\r
 935                         clearArea(1);\r
 936                 }\r
 937 \r
 938                 // second changed?\r
 939                 if (thissec != tval.tv_sec)\r
 940                 {\r
 941 #ifdef BENCHMARK\r
 942                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 943                         if (++bench == 10) {\r
 944                                 bench = 0;\r
 945                                 bench_fps_s = bench_fps;\r
 946                                 bf[bfp++ & 3] = bench_fps;\r
 947                                 bench_fps = 0;\r
 948                         }\r
 949                         bench_fps += frames_shown;\r
 950                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 951 #else\r
 952                         if (currentConfig.EmuOpt & 2) {\r
 953                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 954                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 955                         }\r
 956 #endif\r
 957                         frames_shown = frames_done = 0;\r
 958                         thissec = tval.tv_sec;\r
 959                 }\r
 960 #ifdef PFRAMES\r
 961                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 962 #endif\r
 963 \r
 964                 if (pthissec != tval.tv_sec)\r
 965                 {\r
 966                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 967                                 pframes_done = pframes_shown = 0;\r
 968                         } else {\r
 969                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 970                                 // when second changes, but we don't want buffer to starve.\r
 971                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 972                                         updateKeys();\r
 973                                         SkipFrame(1); pframes_done++;\r
 974                                 }\r
 975 \r
 976                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 977                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 978                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 979                         }\r
 980                         pthissec = tval.tv_sec;\r
 981                 }\r
 982 \r
 983                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 984                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 985                 {\r
 986                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 987                                 updateKeys();\r
 988                                 SkipFrame(1); pframes_done++; frames_done++;\r
 989                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 990                                         gettimeofday(&tval, 0);\r
 991                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 992                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 993                                                 simpleWait(pthissec, lim_time);\r
 994                                         }\r
 995                                 }\r
 996                                 lim_time += target_frametime;\r
 997                         }\r
 998                 }\r
 999                 else if (tval.tv_usec > lim_time) // auto frameskip\r
1000                 {\r
1001                         // no time left for this frame - skip\r
1002                         if (tval.tv_usec - lim_time >= 300000) {\r
1003                                 /* something caused a slowdown for us (disk access? cache flush?)\r
1004                                  * try to recover by resetting timing... */\r
1005                                 reset_timing = 1;\r
1006                                 continue;\r
1007                         }\r
1008                         updateKeys();\r
1009                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
1010                         continue;\r
1011                 }\r
1012 \r
1013                 updateKeys();\r
1014                 PicoFrame();\r
1015 \r
1016                 // check time\r
1017                 gettimeofday(&tval, 0);\r
1018                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1019 \r
1020                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
1021                         reset_timing = 1;\r
1022                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1023                 {\r
1024                         // sleep or vsync if we are still too fast\r
1025                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1026                         if (!reset_timing && tval.tv_usec < lim_time)\r
1027                         {\r
1028                                 // we are too fast\r
1029                                 if (vsync_offset) {\r
1030                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
1031                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
1032                                         gp2x_video_wait_vsync();\r
1033                                 } else {\r
1034                                         simpleWait(pthissec, lim_time);\r
1035                                 }\r
1036                         }\r
1037                 }\r
1038 \r
1039                 blit(fpsbuff, notice);\r
1040 \r
1041                 pframes_done++; pframes_shown++;\r
1042                  frames_done++;  frames_shown++;\r
1043         }\r
1044 \r
1045         emu_changeFastForward(0);\r
1046 \r
1047         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1048 \r
1049         // save SRAM\r
1050         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1051                 emu_state_cb("Writing SRAM/BRAM..");\r
1052                 emu_SaveLoadGame(0, 1);\r
1053                 SRam.changed = 0;\r
1054         }\r
1055 \r
1056         // if in 8bit mode, generate 16bit image for menu background\r
1057         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1058                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1059 }\r
1060 \r
1061 \r
1062 void emu_ResetGame(void)\r
1063 {\r
1064         PicoReset();\r
1065         reset_timing = 1;\r
1066 }\r
1067 \r