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- #include <windows.h>
- #include <string.h>
- #include <sys/stat.h> // mkdir
- #include <sys/types.h>
- #include "kgsdk/Framework.h"
- #include "kgsdk/Framework2D.h"
- #include "kgsdk/FrameworkAudio.h"
- #include "../common/emu.h"
- #include "../common/lprintf.h"
- #include "../common/arm_utils.h"
- #include "../common/config.h"
- #include "emu.h"
- #include "menu.h"
- #include "giz.h"
- #include "asm_utils.h"
- #include <Pico/PicoInt.h>
- #ifdef BENCHMARK
- #define OSD_FPS_X 220
- #else
- #define OSD_FPS_X 260
- #endif
- // main 300K gfx-related buffer. Used by menu and renderers.
- unsigned char gfx_buffer[321*240*2*2];
- char romFileName[MAX_PATH];
- int engineState;
- unsigned char *PicoDraw2FB = gfx_buffer; // temporary buffer for alt renderer ( (8+320)*(8+240+8) )
- int reset_timing = 0;
- static DWORD noticeMsgTime = 0;
- static short *snd_cbuff = NULL;
- static int snd_cbuf_samples = 0, snd_all_samples = 0;
- static void blit(const char *fps, const char *notice);
- static void clearArea(int full);
- void emu_noticeMsgUpdated(void)
- {
- noticeMsgTime = GetTickCount();
- }
- int emu_getMainDir(char *dst, int len)
- {
- if (len > 0) *dst = 0;
- return 0;
- }
- static void emu_msg_cb(const char *msg)
- {
- if (giz_screen != NULL) fb_unlock();
- giz_screen = fb_lock(1);
- memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
- emu_textOut16(4, 232, msg);
- noticeMsgTime = GetTickCount() - 2000;
- /* assumption: emu_msg_cb gets called only when something slow is about to happen */
- reset_timing = 1;
- fb_unlock();
- giz_screen = fb_lock((currentConfig.EmuOpt&0x8000) ? 0 : 1);
- }
- void emu_stateCb(const char *str)
- {
- if (giz_screen != NULL) fb_unlock();
- giz_screen = fb_lock(1);
- clearArea(0);
- blit("", str);
- fb_unlock();
- giz_screen = NULL;
- Sleep(0); /* yield the CPU, the system may need it */
- }
- static void emu_msg_tray_open(void)
- {
- strcpy(noticeMsg, "CD tray opened");
- noticeMsgTime = GetTickCount();
- }
- void emu_Init(void)
- {
- // make dirs for saves, cfgs, etc.
- mkdir("mds", 0777);
- mkdir("srm", 0777);
- mkdir("brm", 0777);
- mkdir("cfg", 0777);
- PicoInit();
- PicoMessage = emu_msg_cb;
- PicoMCDopenTray = emu_msg_tray_open;
- PicoMCDcloseTray = menu_loop_tray;
- }
- void emu_Deinit(void)
- {
- // save SRAM
- if ((currentConfig.EmuOpt & 1) && SRam.changed) {
- emu_SaveLoadGame(0, 1);
- SRam.changed = 0;
- }
- if (!(currentConfig.EmuOpt & 0x20))
- config_writelrom(PicoConfigFile);
- PicoExit();
- }
- void emu_prepareDefaultConfig(void)
- {
- memset(&defaultConfig, 0, sizeof(defaultConfig));
- defaultConfig.EmuOpt = 0x1d | 0x680; // | confirm_save, cd_leds, 16bit rend
- defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;
- defaultConfig.s_PsndRate = 22050;
- defaultConfig.s_PicoRegion = 0; // auto
- defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
- defaultConfig.s_PicoCDBuffers = 0;
- defaultConfig.Frameskip = -1; // auto
- defaultConfig.volume = 50;
- defaultConfig.KeyBinds[ 2] = 1<<0; // SACB RLDU
- defaultConfig.KeyBinds[ 3] = 1<<1;
- defaultConfig.KeyBinds[ 0] = 1<<2;
- defaultConfig.KeyBinds[ 1] = 1<<3;
- defaultConfig.KeyBinds[ 5] = 1<<4;
- defaultConfig.KeyBinds[ 6] = 1<<5;
- defaultConfig.KeyBinds[ 7] = 1<<6;
- defaultConfig.KeyBinds[ 4] = 1<<7;
- defaultConfig.KeyBinds[13] = 1<<26; // switch rend
- defaultConfig.KeyBinds[ 8] = 1<<27; // save state
- defaultConfig.KeyBinds[ 9] = 1<<28; // load state
- defaultConfig.KeyBinds[12] = 1<<29; // vol up
- defaultConfig.KeyBinds[11] = 1<<30; // vol down
- defaultConfig.scaling = 0;
- defaultConfig.turbo_rate = 15;
- }
- static int EmuScanBegin16(unsigned int num)
- {
- if (!(Pico.video.reg[1]&8)) num += 8;
- DrawLineDest = (unsigned short *) giz_screen + 321 * num;
- if ((currentConfig.EmuOpt&0x4000) && (num&1) == 0) // (Pico.m.frame_count&1))
- return 1; // skip next line
- return 0;
- }
- static int EmuScanBegin8(unsigned int num)
- {
- // draw like the fast renderer
- if (!(Pico.video.reg[1]&8)) num += 8;
- HighCol = gfx_buffer + 328 * num;
- return 0;
- }
- static void osd_text(int x, int y, const char *text)
- {
- int len = strlen(text) * 8 / 2;
- int *p, h;
- for (h = 0; h < 8; h++) {
- p = (int *) ((unsigned short *) giz_screen+x+321*(y+h));
- p = (int *) ((int)p & ~3); // align
- memset32(p, 0, len);
- }
- emu_textOut16(x, y, text);
- }
- /*
- void log1(void *p1, void *p2)
- {
- lprintf("%p %p %p\n", p1, p2, DrawLineDest);
- }
- */
- static void cd_leds(void)
- {
- static int old_reg = 0;
- unsigned int col_g, col_r, *p;
- if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change
- old_reg = Pico_mcd->s68k_regs[0];
- p = (unsigned int *)((short *)giz_screen + 321*2+4+2);
- col_g = (old_reg & 2) ? 0x06000600 : 0;
- col_r = (old_reg & 1) ? 0xc000c000 : 0;
- *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 321/2 - 12/2 + 1;
- *p++ = col_g; p+=3; *p++ = col_r; p += 321/2 - 10/2;
- *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
- }
- static short localPal[0x100];
- static void blit(const char *fps, const char *notice)
- {
- int emu_opt = currentConfig.EmuOpt;
- if (PicoOpt&0x10)
- {
- int lines_flags = 224;
- // 8bit fast renderer
- if (Pico.m.dirtyPal) {
- Pico.m.dirtyPal = 0;
- vidConvCpyRGB565(localPal, Pico.cram, 0x40);
- }
- // a hack for VR
- if (PicoRead16Hook == PicoSVPRead16)
- memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);
- if (!(Pico.video.reg[12]&1)) lines_flags|=0x10000;
- if (currentConfig.EmuOpt&0x4000)
- lines_flags|=0x40000; // (Pico.m.frame_count&1)?0x20000:0x40000;
- vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
- }
- else if (!(emu_opt&0x80))
- {
- int lines_flags;
- // 8bit accurate renderer
- if (Pico.m.dirtyPal) {
- Pico.m.dirtyPal = 0;
- vidConvCpyRGB565(localPal, Pico.cram, 0x40);
- if (Pico.video.reg[0xC]&8) { // shadow/hilight mode
- //vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);
- //vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40); // TODO?
- memcpy32((void *)(localPal+0xc0), (void *)(localPal+0x40), 0x40*2/4);
- localPal[0xc0] = 0x0600;
- localPal[0xd0] = 0xc000;
- localPal[0xe0] = 0x0000; // reserved pixels for OSD
- localPal[0xf0] = 0xffff;
- }
- /* no support
- else if (rendstatus & 0x20) { // mid-frame palette changes
- vidConvCpyRGB565(localPal+0x40, HighPal, 0x40);
- vidConvCpyRGB565(localPal+0x80, HighPal+0x40, 0x40);
- } */
- }
- lines_flags = (Pico.video.reg[1]&8) ? 240 : 224;
- if (!(Pico.video.reg[12]&1)) lines_flags|=0x10000;
- if (currentConfig.EmuOpt&0x4000)
- lines_flags|=0x40000; // (Pico.m.frame_count&1)?0x20000:0x40000;
- vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
- }
- if (notice || (emu_opt & 2)) {
- int h = 232;
- if (notice) osd_text(4, h, notice);
- if (emu_opt & 2) osd_text(OSD_FPS_X, h, fps);
- }
- if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
- cd_leds();
- }
- // clears whole screen or just the notice area (in all buffers)
- static void clearArea(int full)
- {
- if (giz_screen == NULL)
- giz_screen = fb_lock(1);
- if (full) memset32(giz_screen, 0, 320*240*2/4);
- else memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
- if (currentConfig.EmuOpt&0x8000) {
- fb_unlock();
- giz_screen = fb_lock(0);
- if (full) memset32(giz_screen, 0, 320*240*2/4);
- else memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
- }
- }
- static void vidResetMode(void)
- {
- giz_screen = fb_lock(1);
- if (PicoOpt&0x10) {
- } else if (currentConfig.EmuOpt&0x80) {
- PicoDrawSetColorFormat(1);
- PicoScanBegin = EmuScanBegin16;
- } else {
- PicoDrawSetColorFormat(-1);
- PicoScanBegin = EmuScanBegin8;
- }
- if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) {
- // setup pal for 8-bit modes
- localPal[0xc0] = 0x0600;
- localPal[0xd0] = 0xc000;
- localPal[0xe0] = 0x0000; // reserved pixels for OSD
- localPal[0xf0] = 0xffff;
- }
- Pico.m.dirtyPal = 1;
- memset32(giz_screen, 0, 321*240*2/4);
- if (currentConfig.EmuOpt&0x8000) {
- fb_unlock();
- giz_screen = fb_lock(0);
- memset32(giz_screen, 0, 321*240*2/4);
- }
- fb_unlock();
- giz_screen = NULL;
- }
- /*
- #include <stdarg.h>
- static void stdbg(const char *fmt, ...)
- {
- static int cnt = 0;
- va_list vl;
- sprintf(noticeMsg, "%x ", cnt++);
- va_start(vl, fmt);
- vsnprintf(noticeMsg+strlen(noticeMsg), sizeof(noticeMsg)-strlen(noticeMsg), fmt, vl);
- va_end(vl);
- noticeMsgTime = GetTickCount();
- }
- */
- static void updateSound(int len)
- {
- if (PicoOpt&8) len<<=1;
- snd_all_samples += len;
- PsndOut += len;
- if (PsndOut - snd_cbuff >= snd_cbuf_samples)
- {
- //if (PsndOut - snd_cbuff != snd_cbuf_samples)
- // stdbg("snd diff is %i, not %i", PsndOut - snd_cbuff, snd_cbuf_samples);
- PsndOut = snd_cbuff;
- }
- }
- static void SkipFrame(void)
- {
- PicoSkipFrame=1;
- PicoFrame();
- PicoSkipFrame=0;
- }
- /* forced frame to front buffer */
- void emu_forcedFrame(int opts)
- {
- int po_old = PicoOpt;
- int eo_old = currentConfig.EmuOpt;
- PicoOpt &= ~0x10;
- PicoOpt |= opts|POPT_ACC_SPRITES;
- currentConfig.EmuOpt |= 0x80;
- if (giz_screen == NULL)
- giz_screen = fb_lock(1);
- PicoDrawSetColorFormat(1);
- PicoScanBegin = EmuScanBegin16;
- Pico.m.dirtyPal = 1;
- PicoFrameDrawOnly();
- fb_unlock();
- giz_screen = NULL;
- PicoOpt = po_old;
- currentConfig.EmuOpt = eo_old;
- }
- static void RunEvents(unsigned int which)
- {
- if (which & 0x1800) // save or load (but not both)
- {
- int do_it = 1;
- if (PsndOut != NULL)
- FrameworkAudio_SetPause(1);
- if (giz_screen == NULL)
- giz_screen = fb_lock(1);
- if ( emu_checkSaveFile(state_slot) &&
- (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
- (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
- {
- int keys;
- blit("", (which & 0x1000) ? "LOAD STATE? (PLAY=yes, STOP=no)" : "OVERWRITE SAVE? (PLAY=yes, STOP=no)");
- while( !((keys = Framework_PollGetButtons()) & (BTN_PLAY|BTN_STOP)) )
- Sleep(50);
- if (keys & BTN_STOP) do_it = 0;
- while( ((keys = Framework_PollGetButtons()) & (BTN_PLAY|BTN_STOP)) ) // wait for release
- Sleep(50);
- clearArea(0);
- }
- if (do_it)
- {
- osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");
- PicoStateProgressCB = emu_stateCb;
- emu_SaveLoadGame((which & 0x1000) >> 12, 0);
- PicoStateProgressCB = NULL;
- Sleep(0);
- }
- if (PsndOut != NULL)
- FrameworkAudio_SetPause(0);
- reset_timing = 1;
- }
- if (which & 0x0400) // switch renderer
- {
- if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }
- else { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
- vidResetMode();
- if (PicoOpt&0x10) {
- strcpy(noticeMsg, " 8bit fast renderer");
- } else if (currentConfig.EmuOpt&0x80) {
- strcpy(noticeMsg, "16bit accurate renderer");
- } else {
- strcpy(noticeMsg, " 8bit accurate renderer");
- }
- noticeMsgTime = GetTickCount();
- }
- if (which & 0x0300)
- {
- if(which&0x0200) {
- state_slot -= 1;
- if(state_slot < 0) state_slot = 9;
- } else {
- state_slot += 1;
- if(state_slot > 9) state_slot = 0;
- }
- sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
- noticeMsgTime = GetTickCount();
- }
- }
- static void updateKeys(void)
- {
- unsigned int keys, allActions[2] = { 0, 0 }, events;
- static unsigned int prevEvents = 0;
- int i;
- keys = Framework_PollGetButtons();
- if (keys & BTN_HOME)
- engineState = PGS_Menu;
- keys &= CONFIGURABLE_KEYS;
- for (i = 0; i < 32; i++)
- {
- if (keys & (1 << i))
- {
- int pl, acts = currentConfig.KeyBinds[i];
- if (!acts) continue;
- pl = (acts >> 16) & 1;
- if (kb_combo_keys & (1 << i))
- {
- int u = i+1, acts_c = acts & kb_combo_acts;
- // let's try to find the other one
- if (acts_c) {
- for (; u < 32; u++)
- if ( (keys & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {
- allActions[pl] |= acts_c & currentConfig.KeyBinds[u];
- keys &= ~((1 << i) | (1 << u));
- break;
- }
- }
- // add non-combo actions if combo ones were not found
- if (!acts_c || u == 32)
- allActions[pl] |= acts & ~kb_combo_acts;
- } else {
- allActions[pl] |= acts;
- }
- }
- }
- PicoPad[0] = allActions[0] & 0xfff;
- PicoPad[1] = allActions[1] & 0xfff;
- if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
- if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
- events = (allActions[0] | allActions[1]) >> 16;
- // volume is treated in special way and triggered every frame
- if ((events & 0x6000) && PsndOut != NULL)
- {
- int vol = currentConfig.volume;
- if (events & 0x2000) {
- if (vol < 100) vol++;
- } else {
- if (vol > 0) vol--;
- }
- FrameworkAudio_SetVolume(vol, vol);
- sprintf(noticeMsg, "VOL: %02i ", vol);
- noticeMsgTime = GetTickCount();
- currentConfig.volume = vol;
- }
- events &= ~prevEvents;
- if (events) RunEvents(events);
- if (movie_data) emu_updateMovie();
- prevEvents = (allActions[0] | allActions[1]) >> 16;
- }
- void emu_platformDebugCat(char *str)
- {
- // nothing
- }
- static void simpleWait(DWORD until)
- {
- DWORD tval;
- int diff;
- tval = GetTickCount();
- diff = (int)until - (int)tval;
- if (diff >= 2)
- Sleep(diff - 1);
- while ((tval = GetTickCount()) < until && until - tval < 512) // some simple overflow detection
- spend_cycles(1024*2);
- }
- void emu_Loop(void)
- {
- static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
- char fpsbuff[24]; // fps count c string
- DWORD tval, tval_prev = 0, tval_thissec = 0; // timing
- int frames_done = 0, frames_shown = 0, oldmodes = 0, sec_ms = 1000;
- int target_fps, target_frametime, lim_time, tval_diff, i;
- char *notice = NULL;
- lprintf("entered emu_Loop()\n");
- fpsbuff[0] = 0;
- // make sure we are in correct mode
- vidResetMode();
- if (currentConfig.scaling) PicoOpt|=0x4000;
- else PicoOpt&=~0x4000;
- Pico.m.dirtyPal = 1;
- oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
- emu_findKeyBindCombos();
- // pal/ntsc might have changed, reset related stuff
- target_fps = Pico.m.pal ? 50 : 60;
- target_frametime = Pico.m.pal ? (1000<<8)/50 : (1000<<8)/60+1;
- reset_timing = 1;
- // prepare CD buffer
- if (PicoAHW & PAHW_MCD) PicoCDBufferInit();
- // prepare sound stuff
- PsndOut = NULL;
- if (currentConfig.EmuOpt & 4)
- {
- int ret, snd_excess_add, stereo;
- if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
- PsndRerate(Pico.m.frame_count ? 1 : 0);
- }
- stereo=(PicoOpt&8)>>3;
- snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
- snd_cbuf_samples = (PsndRate<<stereo) * 16 / target_fps;
- lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
- PsndRate, PsndLen, snd_excess_add, stereo, Pico.m.pal);
- ret = FrameworkAudio_Init(PsndRate, snd_cbuf_samples, stereo);
- if (ret != 0) {
- lprintf("FrameworkAudio_Init() failed: %i\n", ret);
- sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
- noticeMsgTime = GetTickCount();
- currentConfig.EmuOpt &= ~4;
- } else {
- FrameworkAudio_SetVolume(currentConfig.volume, currentConfig.volume);
- PicoWriteSound = updateSound;
- snd_cbuff = FrameworkAudio_56448Buffer();
- PsndOut = snd_cbuff + snd_cbuf_samples / 2; // start writing at the middle
- snd_all_samples = 0;
- PsndRate_old = PsndRate;
- PicoOpt_old = PicoOpt;
- pal_old = Pico.m.pal;
- }
- }
- // loop?
- while (engineState == PGS_Running)
- {
- int modes;
- tval = GetTickCount();
- if (reset_timing || tval < tval_prev) {
- //stdbg("timing reset");
- reset_timing = 0;
- tval_thissec = tval;
- frames_shown = frames_done = 0;
- }
- // show notice message?
- if (noticeMsgTime) {
- static int noticeMsgSum;
- if (tval - noticeMsgTime > 2000) { // > 2.0 sec
- noticeMsgTime = 0;
- clearArea(0);
- notice = 0;
- } else {
- int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
- if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
- notice = noticeMsg;
- }
- }
- // check for mode changes
- modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
- if (modes != oldmodes) {
- oldmodes = modes;
- clearArea(1);
- }
- // second passed?
- if (tval - tval_thissec >= sec_ms)
- {
- #ifdef BENCHMARK
- static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
- if(++bench == 10) {
- bench = 0;
- bench_fps_s = bench_fps;
- bf[bfp++ & 3] = bench_fps;
- bench_fps = 0;
- }
- bench_fps += frames_shown;
- sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
- #else
- if(currentConfig.EmuOpt & 2)
- sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
- #endif
- //tval_thissec += 1000;
- tval_thissec += sec_ms;
- if (PsndOut != NULL)
- {
- /* some code which tries to sync things to audio clock, the dirty way */
- static int audio_skew_prev = 0;
- int audio_skew, adj, co = 9, shift = 7;
- audio_skew = snd_all_samples*2 - FrameworkAudio_BufferPos();
- if (PsndRate == 22050) co = 10;
- if (PsndRate > 22050) co = 11;
- if (PicoOpt&8) shift++;
- if (audio_skew < 0) {
- adj = -((-audio_skew) >> shift);
- if (audio_skew > -(6<<co)) adj>>=1;
- if (audio_skew > -(4<<co)) adj>>=1;
- if (audio_skew > -(2<<co)) adj>>=1;
- if (audio_skew > audio_skew_prev) adj>>=2; // going up already
- } else {
- adj = audio_skew >> shift;
- if (audio_skew < (6<<co)) adj>>=1;
- if (audio_skew < (4<<co)) adj>>=1;
- if (audio_skew < (2<<co)) adj>>=1;
- if (audio_skew < audio_skew_prev) adj>>=2;
- }
- audio_skew_prev = audio_skew;
- target_frametime += adj;
- sec_ms = (target_frametime * target_fps) >> 8;
- //stdbg("%i %i %i", audio_skew, adj, sec_ms);
- frames_done = frames_shown = 0;
- }
- else if (currentConfig.Frameskip < 0) {
- frames_done -= target_fps; if (frames_done < 0) frames_done = 0;
- frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
- if (frames_shown > frames_done) frames_shown = frames_done;
- } else {
- frames_done = frames_shown = 0;
- }
- }
- #ifdef PFRAMES
- sprintf(fpsbuff, "%i", Pico.m.frame_count);
- #endif
- tval_prev = tval;
- lim_time = (frames_done+1) * target_frametime;
- if (currentConfig.Frameskip >= 0) // frameskip enabled
- {
- for (i = 0; i < currentConfig.Frameskip; i++) {
- updateKeys();
- SkipFrame(); frames_done++;
- if (PsndOut) { // do framelimitting if sound is enabled
- int tval_diff;
- tval = GetTickCount();
- tval_diff = (int)(tval - tval_thissec) << 8;
- if (tval_diff < lim_time) // we are too fast
- simpleWait(tval + ((lim_time - tval_diff)>>8));
- }
- lim_time += target_frametime;
- }
- }
- else // auto frameskip
- {
- int tval_diff;
- tval = GetTickCount();
- tval_diff = (int)(tval - tval_thissec) << 8;
- if (tval_diff > lim_time)
- {
- // no time left for this frame - skip
- if (tval_diff - lim_time >= (300<<8)) {
- /* something caused a slowdown for us (disk access? cache flush?)
- * try to recover by resetting timing... */
- reset_timing = 1;
- continue;
- }
- updateKeys();
- SkipFrame(); frames_done++;
- continue;
- }
- }
- updateKeys();
- if (currentConfig.EmuOpt&0x80)
- /* be sure correct framebuffer is locked */
- giz_screen = fb_lock((currentConfig.EmuOpt&0x8000) ? 0 : 1);
- PicoFrame();
- if (giz_screen == NULL)
- giz_screen = fb_lock((currentConfig.EmuOpt&0x8000) ? 0 : 1);
- blit(fpsbuff, notice);
- if (giz_screen != NULL) {
- fb_unlock();
- giz_screen = NULL;
- }
- if (currentConfig.EmuOpt&0x2000)
- Framework2D_WaitVSync();
- if (currentConfig.EmuOpt&0x8000)
- fb_flip();
- // check time
- tval = GetTickCount();
- tval_diff = (int)(tval - tval_thissec) << 8;
- if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300<<8)) // slowdown detection
- reset_timing = 1;
- else if (PsndOut != NULL || currentConfig.Frameskip < 0)
- {
- // sleep if we are still too fast
- if (tval_diff < lim_time)
- {
- // we are too fast
- simpleWait(tval + ((lim_time - tval_diff) >> 8));
- }
- }
- frames_done++; frames_shown++;
- }
- if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
- if (PsndOut != NULL) {
- PsndOut = snd_cbuff = NULL;
- FrameworkAudio_Close();
- }
- // save SRAM
- if ((currentConfig.EmuOpt & 1) && SRam.changed) {
- emu_stateCb("Writing SRAM/BRAM..");
- emu_SaveLoadGame(0, 1);
- SRam.changed = 0;
- }
- }
- void emu_ResetGame(void)
- {
- PicoReset();
- reset_timing = 1;
- }
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