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