platform/psp/emu.c

   1 #include <sys/stat.h>
   2 #include <sys/types.h>
   3 #include <sys/syslimits.h> // PATH_MAX
   4
   5 #include <pspthreadman.h>
   6 #include <pspdisplay.h>
   7
   8 #include "psp.h"
   9 #include "menu.h"
  10 #include "emu.h"
  11 #include "../common/emu.h"
  12 #include "../common/lprintf.h"
  13 #include "../../Pico/PicoInt.h"
  14
  15 #ifdef BENCHMARK
  16 #define OSD_FPS_X 220
  17 #else
  18 #define OSD_FPS_X 260
  19 #endif
  20
  21 // vram usage map:
  22 // 000000-044000 fb0
  23 // 044000-088000 fb1
  24 // 088000-0ae000 texture0
  25 // 0ae000-0d4000 texture1
  26
  27 char romFileName[PATH_MAX];
  28 static unsigned char picoD2FB[(8+320)*(8+240+8)];
  29 unsigned char *PicoDraw2FB = picoD2FB;  // temporary buffer for alt renderer ( (8+320)*(8+240+8) )
  30 int engineState;
  31
  32 static int combo_keys = 0, combo_acts = 0; // keys and actions which need button combos
  33 static unsigned int noticeMsgTime = 0;
  34 int reset_timing = 0; // do we need this?
  35
  36
  37 static void blit(const char *fps, const char *notice);
  38 static void clearArea(int full);
  39
  40 void emu_noticeMsgUpdated(void)
  41 {
  42         noticeMsgTime = sceKernelGetSystemTimeLow();
  43 }
  44
  45 void emu_getMainDir(char *dst, int len)
  46 {
  47         if (len > 0) *dst = 0;
  48 }
  49
  50 static void emu_msg_cb(const char *msg)
  51 {
  52         void *fb = psp_video_get_active_fb();
  53
  54         memset32((int *)((char *)fb + 512*264*2), 0, 512*8*2/4);
  55         emu_textOut16(4, 264, msg);
  56         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
  57
  58         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
  59         reset_timing = 1;
  60 }
  61
  62 void emu_stateCb(const char *str)
  63 {
  64         clearArea(0);
  65         blit("", str);
  66 }
  67
  68 static void emu_msg_tray_open(void)
  69 {
  70         strcpy(noticeMsg, "CD tray opened");
  71         noticeMsgTime = sceKernelGetSystemTimeLow();
  72 }
  73
  74
  75 void emu_Init(void)
  76 {
  77         // make dirs for saves, cfgs, etc.
  78         mkdir("mds", 0777);
  79         mkdir("srm", 0777);
  80         mkdir("brm", 0777);
  81         mkdir("cfg", 0777);
  82
  83         PicoInit();
  84         PicoMessage = emu_msg_cb;
  85         PicoMCDopenTray = emu_msg_tray_open;
  86         PicoMCDcloseTray = menu_loop_tray;
  87 }
  88
  89 void emu_Deinit(void)
  90 {
  91         // save SRAM
  92         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
  93                 emu_SaveLoadGame(0, 1);
  94                 SRam.changed = 0;
  95         }
  96
  97         if (!(currentConfig.EmuOpt & 0x20)) {
  98                 FILE *f = fopen(PicoConfigFile, "r+b");
  99                 if (!f) emu_WriteConfig(0);
 100                 else {
 101                         // if we already have config, reload it, except last ROM
 102                         fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
 103                         fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
 104                         fseek(f, 0, SEEK_SET);
 105                         fwrite(&currentConfig, 1, sizeof(currentConfig), f);
 106                         fflush(f);
 107                         fclose(f);
 108                 }
 109         }
 110
 111         PicoExit();
 112 }
 113
 114 void emu_setDefaultConfig(void)
 115 {
 116         memset(&currentConfig, 0, sizeof(currentConfig));
 117         currentConfig.lastRomFile[0] = 0;
 118         currentConfig.EmuOpt  = 0x1f | 0x680; // | confirm_save, cd_leds, 16bit rend
 119         currentConfig.PicoOpt = 0x07 | 0xc00; // | cd_pcm, cd_cdda
 120         currentConfig.PsndRate = 22050;
 121         currentConfig.PicoRegion = 0; // auto
 122         currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
 123         currentConfig.Frameskip = -1; // auto
 124         currentConfig.volume = 50;
 125         currentConfig.CPUclock = 222;
 126         currentConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 127         currentConfig.KeyBinds[ 6] = 1<<1;
 128         currentConfig.KeyBinds[ 7] = 1<<2;
 129         currentConfig.KeyBinds[ 5] = 1<<3;
 130         currentConfig.KeyBinds[14] = 1<<4;
 131         currentConfig.KeyBinds[13] = 1<<5;
 132         currentConfig.KeyBinds[15] = 1<<6;
 133         currentConfig.KeyBinds[ 3] = 1<<7;
 134         currentConfig.KeyBinds[23] = 1<<26; // switch rend
 135         currentConfig.KeyBinds[ 8] = 1<<27; // save state
 136         currentConfig.KeyBinds[ 9] = 1<<28; // load state
 137         currentConfig.PicoCDBuffers = 0;
 138         currentConfig.scaling = 0;
 139 }
 140
 141
 142 static int EmuScan16(unsigned int num, void *sdata)
 143 {
 144         if (!(Pico.video.reg[1]&8)) num += 8;
 145         DrawLineDest = (unsigned short *) psp_screen + 512*(num+1);
 146
 147         return 0;
 148 }
 149
 150 static int EmuScan8(unsigned int num, void *sdata)
 151 {
 152         // draw like the fast renderer
 153         // TODO?
 154         //if (!(Pico.video.reg[1]&8)) num += 8;
 155         //HighCol = gfx_buffer + 328*(num+1);
 156
 157         return 0;
 158 }
 159
 160 static void osd_text(int x, const char *text)
 161 {
 162         int len = strlen(text) * 8 / 2;
 163         int *p, h;
 164         for (h = 0; h < 8; h++) {
 165                 p = (int *) ((unsigned short *) psp_screen+x+512*(264+h));
 166                 p = (int *) ((int)p & ~3); // align
 167                 memset32(p, 0, len);
 168         }
 169         emu_textOut16(x, 264, text);
 170 }
 171
 172
 173 static void cd_leds(void)
 174 {
 175         static int old_reg = 0;
 176         unsigned int col_g, col_r, *p;
 177
 178         if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change
 179         old_reg = Pico_mcd->s68k_regs[0];
 180
 181         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 182         col_g = (old_reg & 2) ? 0x06000600 : 0;
 183         col_r = (old_reg & 1) ? 0xc000c000 : 0;
 184         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 185         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 186         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 187 }
 188
 189
 190 static short localPal[0x100];
 191
 192 static void blit(const char *fps, const char *notice)
 193 {
 194         int emu_opt = currentConfig.EmuOpt;
 195
 196 #if 0
 197         if (PicoOpt&0x10)
 198         {
 199                 int lines_flags = 224;
 200                 // 8bit fast renderer
 201                 if (Pico.m.dirtyPal) {
 202                         Pico.m.dirtyPal = 0;
 203                         vidConvCpyRGB565(localPal, Pico.cram, 0x40);
 204                 }
 205                 if (!(Pico.video.reg[12]&1)) lines_flags|=0x10000;
 206                 if (currentConfig.EmuOpt&0x4000)
 207                         lines_flags|=0x40000; // (Pico.m.frame_count&1)?0x20000:0x40000;
 208                 vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
 209         }
 210         else if (!(emu_opt&0x80))
 211         {
 212                 int lines_flags;
 213                 // 8bit accurate renderer
 214                 if (Pico.m.dirtyPal) {
 215                         Pico.m.dirtyPal = 0;
 216                         vidConvCpyRGB565(localPal, Pico.cram, 0x40);
 217                         if (Pico.video.reg[0xC]&8) { // shadow/hilight mode
 218                                 //vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);
 219                                 //vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40); // TODO?
 220                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*2);
 221                                 localPal[0xc0] = 0x0600;
 222                                 localPal[0xd0] = 0xc000;
 223                                 localPal[0xe0] = 0x0000; // reserved pixels for OSD
 224                                 localPal[0xf0] = 0xffff;
 225                         }
 226                         /* no support
 227                         else if (rendstatus & 0x20) { // mid-frame palette changes
 228                                 vidConvCpyRGB565(localPal+0x40, HighPal, 0x40);
 229                                 vidConvCpyRGB565(localPal+0x80, HighPal+0x40, 0x40);
 230                         } */
 231                 }
 232                 lines_flags = (Pico.video.reg[1]&8) ? 240 : 224;
 233                 if (!(Pico.video.reg[12]&1)) lines_flags|=0x10000;
 234                 if (currentConfig.EmuOpt&0x4000)
 235                         lines_flags|=0x40000; // (Pico.m.frame_count&1)?0x20000:0x40000;
 236                 vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
 237         }
 238 #endif
 239
 240         if (notice || (emu_opt & 2)) {
 241                 if (notice)      osd_text(4, notice);
 242                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps);
 243         }
 244
 245         if ((emu_opt & 0x400) && (PicoMCD & 1))
 246                 cd_leds();
 247
 248         psp_video_flip(0);
 249 }
 250
 251 // clears whole screen or just the notice area (in all buffers)
 252 static void clearArea(int full)
 253 {
 254         if (full) {
 255                 memset32(psp_screen, 0, 512*272*2/4);
 256                 psp_video_flip(0);
 257                 memset32(psp_screen, 0, 512*272*2/4);
 258         } else {
 259                 void *fb = psp_video_get_active_fb();
 260                 memset32((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 261                 memset32((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 262         }
 263 }
 264
 265 static void vidResetMode(void)
 266 {
 267         if (PicoOpt&0x10) {
 268         } else if (currentConfig.EmuOpt&0x80) {
 269                 PicoDrawSetColorFormat(1);
 270                 PicoScan = EmuScan16;
 271         } else {
 272                 PicoDrawSetColorFormat(-1);
 273                 PicoScan = EmuScan8;
 274         }
 275         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) {
 276                 // setup pal for 8-bit modes
 277                 localPal[0xc0] = 0x0600;
 278                 localPal[0xd0] = 0xc000;
 279                 localPal[0xe0] = 0x0000; // reserved pixels for OSD
 280                 localPal[0xf0] = 0xffff;
 281         }
 282         Pico.m.dirtyPal = 1;
 283
 284         clearArea(1);
 285 }
 286
 287 static void updateSound(int len)
 288 {
 289         if (PicoOpt&8) len<<=1;
 290
 291         // TODO..
 292 }
 293
 294
 295 static void SkipFrame(void)
 296 {
 297         PicoSkipFrame=1;
 298         PicoFrame();
 299         PicoSkipFrame=0;
 300 }
 301
 302 void emu_forcedFrame(void)
 303 {
 304         int po_old = PicoOpt;
 305         int eo_old = currentConfig.EmuOpt;
 306
 307         PicoOpt &= ~0x0010;
 308         PicoOpt |=  0x4080; // soft_scale | acc_sprites
 309         currentConfig.EmuOpt |= 0x80;
 310
 311         PicoDrawSetColorFormat(1);
 312         PicoScan = EmuScan16;
 313         PicoScan((unsigned) -1, NULL);
 314         Pico.m.dirtyPal = 1;
 315         PicoFrameDrawOnly();
 316
 317         PicoOpt = po_old;
 318         currentConfig.EmuOpt = eo_old;
 319 }
 320
 321
 322 static void RunEvents(unsigned int which)
 323 {
 324         if (which & 0x1800) // save or load (but not both)
 325         {
 326                 int do_it = 1;
 327
 328                 if ( emu_checkSaveFile(state_slot) &&
 329                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 330                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 331                 {
 332                         int keys;
 333                         blit("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)");
 334                         while( !((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) )
 335                                 psp_msleep(50);
 336                         if (keys & BTN_CIRCLE) do_it = 0;
 337                         while(  ((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) ) // wait for release
 338                                 psp_msleep(50);
 339                         clearArea(0);
 340                 }
 341
 342                 if (do_it)
 343                 {
 344                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");
 345                         PicoStateProgressCB = emu_stateCb;
 346                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);
 347                         PicoStateProgressCB = NULL;
 348                         psp_msleep(0);
 349                 }
 350
 351                 reset_timing = 1;
 352         }
 353         if (which & 0x0400) // switch renderer
 354         {
 355                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 356                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 357
 358                 vidResetMode();
 359
 360                 if (PicoOpt&0x10) {
 361                         strcpy(noticeMsg, " 8bit fast renderer");
 362                 } else if (currentConfig.EmuOpt&0x80) {
 363                         strcpy(noticeMsg, "16bit accurate renderer");
 364                 } else {
 365                         strcpy(noticeMsg, " 8bit accurate renderer");
 366                 }
 367
 368                 noticeMsgTime = sceKernelGetSystemTimeLow();
 369         }
 370         if (which & 0x0300)
 371         {
 372                 if(which&0x0200) {
 373                         state_slot -= 1;
 374                         if(state_slot < 0) state_slot = 9;
 375                 } else {
 376                         state_slot += 1;
 377                         if(state_slot > 9) state_slot = 0;
 378                 }
 379                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
 380                 noticeMsgTime = sceKernelGetSystemTimeLow();
 381         }
 382 }
 383
 384 static void updateKeys(void)
 385 {
 386         unsigned int keys, allActions[2] = { 0, 0 }, events;
 387         static unsigned int prevEvents = 0;
 388         int i;
 389
 390         keys = psp_pad_read(0);
 391         if (keys & PSP_CTRL_HOME)
 392                 sceDisplayWaitVblankStart();
 393
 394         if (keys & BTN_SELECT)
 395                 engineState = PGS_Menu;
 396
 397         keys &= CONFIGURABLE_KEYS;
 398
 399         for (i = 0; i < 32; i++)
 400         {
 401                 if (keys & (1 << i))
 402                 {
 403                         int pl, acts = currentConfig.KeyBinds[i];
 404                         if (!acts) continue;
 405                         pl = (acts >> 16) & 1;
 406                         if (combo_keys & (1 << i))
 407                         {
 408                                 int u = i+1, acts_c = acts & combo_acts;
 409                                 // let's try to find the other one
 410                                 if (acts_c)
 411                                         for (; u < 32; u++)
 412                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
 413                                                         allActions[pl] |= acts_c;
 414                                                         keys &= ~((1 << i) | (1 << u));
 415                                                         break;
 416                                                 }
 417                                 // add non-combo actions if combo ones were not found
 418                                 if (!acts_c || u == 32)
 419                                         allActions[pl] |= acts & ~combo_acts;
 420                         } else {
 421                                 allActions[pl] |= acts;
 422                         }
 423                 }
 424         }
 425
 426         PicoPad[0] = (unsigned short) allActions[0];
 427         PicoPad[1] = (unsigned short) allActions[1];
 428
 429         events = (allActions[0] | allActions[1]) >> 16;
 430
 431         // volume is treated in special way and triggered every frame
 432         if ((events & 0x6000) && PsndOut != NULL)
 433         {
 434                 int vol = currentConfig.volume;
 435                 if (events & 0x2000) {
 436                         if (vol < 100) vol++;
 437                 } else {
 438                         if (vol >   0) vol--;
 439                 }
 440                 // FrameworkAudio_SetVolume(vol, vol); // TODO
 441                 sprintf(noticeMsg, "VOL: %02i ", vol);
 442                 noticeMsgTime = sceKernelGetSystemTimeLow();
 443                 currentConfig.volume = vol;
 444         }
 445
 446         events &= ~prevEvents;
 447         if (events) RunEvents(events);
 448         if (movie_data) emu_updateMovie();
 449
 450         prevEvents = (allActions[0] | allActions[1]) >> 16;
 451 }
 452
 453 static void find_combos(void)
 454 {
 455         int act, u;
 456
 457         // find out which keys and actions are combos
 458         combo_keys = combo_acts = 0;
 459         for (act = 0; act < 32; act++)
 460         {
 461                 int keyc = 0;
 462                 if (act == 16 || act == 17) continue; // player2 flag
 463                 for (u = 0; u < 32; u++)
 464                 {
 465                         if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;
 466                 }
 467                 if (keyc > 1)
 468                 {
 469                         // loop again and mark those keys and actions as combo
 470                         for (u = 0; u < 32; u++)
 471                         {
 472                                 if (currentConfig.KeyBinds[u] & (1 << act)) {
 473                                         combo_keys |= 1 << u;
 474                                         combo_acts |= 1 << act;
 475                                 }
 476                         }
 477                 }
 478         }
 479 }
 480
 481
 482 static void simpleWait(unsigned int until)
 483 {
 484         unsigned int tval;
 485         int diff;
 486
 487         tval = sceKernelGetSystemTimeLow();
 488         diff = (int)until - (int)tval;
 489         if (diff >= 512 && diff < 100*1024)
 490                 sceKernelDelayThread(diff);
 491 }
 492
 493 void emu_Loop(void)
 494 {
 495         //static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 496         char fpsbuff[24]; // fps count c string
 497         unsigned int tval, tval_prev = 0, tval_thissec = 0; // timing
 498         int frames_done = 0, frames_shown = 0, oldmodes = 0;
 499         int target_fps, target_frametime, lim_time, tval_diff, i;
 500         char *notice = NULL;
 501
 502         lprintf("entered emu_Loop()\n");
 503
 504         fpsbuff[0] = 0;
 505
 506         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 507                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 508                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 509                 lprintf(i ? "failed\n" : "done\n");
 510                 currentConfig.CPUclock = psp_get_cpu_clock();
 511         }
 512
 513         // make sure we are in correct mode
 514         vidResetMode();
 515         Pico.m.dirtyPal = 1;
 516         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 517         find_combos();
 518
 519         // pal/ntsc might have changed, reset related stuff
 520         target_fps = Pico.m.pal ? 50 : 60;
 521         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 522         reset_timing = 1;
 523
 524         // prepare CD buffer
 525         if (PicoMCD & 1) PicoCDBufferInit();
 526
 527         // prepare sound stuff
 528         PsndOut = NULL;
 529 #if 0 // TODO
 530         if (currentConfig.EmuOpt & 4)
 531         {
 532                 int ret, snd_excess_add, stereo;
 533                 if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 534                         sound_rerate(Pico.m.frame_count ? 1 : 0);
 535                 }
 536                 stereo=(PicoOpt&8)>>3;
 537                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
 538                 snd_cbuf_samples = (PsndRate<<stereo) * 16 / target_fps;
 539                 lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
 540                         PsndRate, PsndLen, snd_excess_add, stereo, Pico.m.pal);
 541                 ret = FrameworkAudio_Init(PsndRate, snd_cbuf_samples, stereo);
 542                 if (ret != 0) {
 543                         lprintf("FrameworkAudio_Init() failed: %i\n", ret);
 544                         sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
 545                         noticeMsgTime = sceKernelGetSystemTimeLow();
 546                         currentConfig.EmuOpt &= ~4;
 547                 } else {
 548                         FrameworkAudio_SetVolume(currentConfig.volume, currentConfig.volume);
 549                         PicoWriteSound = updateSound;
 550                         snd_cbuff = FrameworkAudio_56448Buffer();
 551                         PsndOut = snd_cbuff + snd_cbuf_samples / 2; // start writing at the middle
 552                         snd_all_samples = 0;
 553                         PsndRate_old = PsndRate;
 554                         PicoOpt_old  = PicoOpt;
 555                         pal_old = Pico.m.pal;
 556                 }
 557         }
 558 #endif
 559
 560         // loop?
 561         while (engineState == PGS_Running)
 562         {
 563                 int modes;
 564
 565                 tval = sceKernelGetSystemTimeLow();
 566                 if (reset_timing || tval < tval_prev) {
 567                         //stdbg("timing reset");
 568                         reset_timing = 0;
 569                         tval_thissec = tval;
 570                         frames_shown = frames_done = 0;
 571                 }
 572
 573                 // show notice message?
 574                 if (noticeMsgTime) {
 575                         static int noticeMsgSum;
 576                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 577                                 noticeMsgTime = 0;
 578                                 clearArea(0);
 579                                 notice = 0;
 580                         } else {
 581                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 582                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 583                                 notice = noticeMsg;
 584                         }
 585                 }
 586
 587                 // check for mode changes
 588                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 589                 if (modes != oldmodes) {
 590                         oldmodes = modes;
 591                         clearArea(1);
 592                 }
 593
 594                 // second passed?
 595                 if (tval - tval_thissec >= 1000000)
 596                 {
 597 #ifdef BENCHMARK
 598                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
 599                         if(++bench == 10) {
 600                                 bench = 0;
 601                                 bench_fps_s = bench_fps;
 602                                 bf[bfp++ & 3] = bench_fps;
 603                                 bench_fps = 0;
 604                         }
 605                         bench_fps += frames_shown;
 606                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
 607 #else
 608                         if(currentConfig.EmuOpt & 2)
 609                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
 610 #endif
 611                         tval_thissec += 1000000;
 612
 613                         if (currentConfig.Frameskip < 0) {
 614                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;
 615                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
 616                                 if (frames_shown > frames_done) frames_shown = frames_done;
 617                         } else {
 618                                 frames_done = frames_shown = 0;
 619                         }
 620                 }
 621 #ifdef PFRAMES
 622                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
 623 #endif
 624
 625                 tval_prev = tval;
 626                 lim_time = (frames_done+1) * target_frametime;
 627                 if (currentConfig.Frameskip >= 0) // frameskip enabled
 628                 {
 629                         for (i = 0; i < currentConfig.Frameskip; i++) {
 630                                 updateKeys();
 631                                 SkipFrame(); frames_done++;
 632                                 if (PsndOut) { // do framelimitting if sound is enabled
 633                                         int tval_diff;
 634                                         tval = sceKernelGetSystemTimeLow();
 635                                         tval_diff = (int)(tval - tval_thissec) << 8;
 636                                         if (tval_diff < lim_time) // we are too fast
 637                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
 638                                 }
 639                                 lim_time += target_frametime;
 640                         }
 641                 }
 642                 else // auto frameskip
 643                 {
 644                         int tval_diff;
 645                         tval = sceKernelGetSystemTimeLow();
 646                         tval_diff = (int)(tval - tval_thissec) << 8;
 647                         if (tval_diff > lim_time)
 648                         {
 649                                 // no time left for this frame - skip
 650                                 if (tval_diff - lim_time >= (300000<<8)) {
 651                                         /* something caused a slowdown for us (disk access? cache flush?)
 652                                          * try to recover by resetting timing... */
 653                                         reset_timing = 1;
 654                                         continue;
 655                                 }
 656                                 updateKeys();
 657                                 SkipFrame(); frames_done++;
 658                                 continue;
 659                         }
 660                 }
 661
 662                 updateKeys();
 663
 664                 if (!(PicoOpt&0x10))
 665                         PicoScan((unsigned) -1, NULL);
 666
 667                 PicoFrame();
 668
 669                 blit(fpsbuff, notice);
 670
 671                 // check time
 672                 tval = sceKernelGetSystemTimeLow();
 673                 tval_diff = (int)(tval - tval_thissec) << 8;
 674
 675                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) // slowdown detection
 676                         reset_timing = 1;
 677                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)
 678                 {
 679                         // sleep if we are still too fast
 680                         if (tval_diff < lim_time)
 681                         {
 682                                 // we are too fast
 683                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
 684                         }
 685                 }
 686
 687                 frames_done++; frames_shown++;
 688         }
 689
 690
 691         if (PicoMCD & 1) PicoCDBufferFree();
 692 /*
 693         if (PsndOut != NULL) {
 694                 PsndOut = snd_cbuff = NULL;
 695                 FrameworkAudio_Close();
 696         }
 697 */
 698         // save SRAM
 699         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
 700                 emu_stateCb("Writing SRAM/BRAM..");
 701                 emu_SaveLoadGame(0, 1);
 702                 SRam.changed = 0;
 703         }
 704 }
 705
 706
 707 void emu_ResetGame(void)
 708 {
 709         PicoReset(0);
 710         reset_timing = 1;
 711 }
 712