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Ecco splash sound fix?
[picodrive.git] / platform / gizmondo / emu.c
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e5f426aa 1#include <windows.h>
ea8c405f 2#include <string.h>
e5f426aa 3
2ec14aec 4#include <sys/stat.h> // mkdir
5#include <sys/types.h>
6
7#include "kgsdk/Framework.h"
ea8c405f 8#include "kgsdk/Framework2D.h"
9#include "kgsdk/FrameworkAudio.h"
10#include "../common/emu.h"
11#include "../common/lprintf.h"
12#include "../common/arm_utils.h"
84100c0f 13#include "../common/config.h"
e5f426aa 14#include "emu.h"
ea8c405f 15#include "menu.h"
16#include "giz.h"
17#include "asm_utils.h"
e5f426aa 18
ea8c405f 19#include <Pico/PicoInt.h>
20
21#ifdef BENCHMARK
22#define OSD_FPS_X 220
23#else
24#define OSD_FPS_X 260
25#endif
26
27// main 300K gfx-related buffer. Used by menu and renderers.
28unsigned char gfx_buffer[321*240*2*2];
e5f426aa 29char romFileName[MAX_PATH];
30int engineState;
e5f426aa 31
ea8c405f 32unsigned char *PicoDraw2FB = gfx_buffer; // temporary buffer for alt renderer ( (8+320)*(8+240+8) )
e5f426aa 33int reset_timing = 0;
ea8c405f 34
35static DWORD noticeMsgTime = 0;
fa283c9a 36static short *snd_cbuff = NULL;
37static int snd_cbuf_samples = 0, snd_all_samples = 0;
ea8c405f 38
39
40static void blit(const char *fps, const char *notice);
41static void clearArea(int full);
42
43void emu_noticeMsgUpdated(void)
44{
45 noticeMsgTime = GetTickCount();
46}
47
48void emu_getMainDir(char *dst, int len)
49{
50 if (len > 0) *dst = 0;
51}
52
53static void emu_msg_cb(const char *msg)
54{
84100c0f 55 if (giz_screen != NULL) fb_unlock();
56 giz_screen = fb_lock(1);
ea8c405f 57
58 memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
59 emu_textOut16(4, 232, msg);
60 noticeMsgTime = GetTickCount() - 2000;
61
62 /* assumption: emu_msg_cb gets called only when something slow is about to happen */
63 reset_timing = 1;
c77ca79e 64
84100c0f 65 fb_unlock();
66 giz_screen = fb_lock((currentConfig.EmuOpt&0x8000) ? 0 : 1);
ea8c405f 67}
68
c77ca79e 69void emu_stateCb(const char *str)
ea8c405f 70{
84100c0f 71 if (giz_screen != NULL) fb_unlock();
72 giz_screen = fb_lock(1);
9839d126 73
ea8c405f 74 clearArea(0);
75 blit("", str);
9839d126 76
84100c0f 77 fb_unlock();
9839d126 78 giz_screen = NULL;
da42200b 79
80 Sleep(0); /* yield the CPU, the system may need it */
ea8c405f 81}
82
83static void emu_msg_tray_open(void)
84{
85 strcpy(noticeMsg, "CD tray opened");
86 noticeMsgTime = GetTickCount();
87}
88
89
90void emu_Init(void)
91{
92 // make dirs for saves, cfgs, etc.
2ec14aec 93 mkdir("mds", 0777);
94 mkdir("srm", 0777);
95 mkdir("brm", 0777);
96 mkdir("cfg", 0777);
ea8c405f 97
98 PicoInit();
99 PicoMessage = emu_msg_cb;
100 PicoMCDopenTray = emu_msg_tray_open;
101 PicoMCDcloseTray = menu_loop_tray;
102}
103
104void emu_Deinit(void)
105{
106 // save SRAM
3c392aec 107 if ((currentConfig.EmuOpt & 1) && SRam.changed) {
ea8c405f 108 emu_SaveLoadGame(0, 1);
109 SRam.changed = 0;
110 }
111
58c86d00 112 if (!(currentConfig.EmuOpt & 0x20))
113 config_writelrom(PicoConfigFile);
ea8c405f 114
115 PicoExit();
116}
117
84100c0f 118void emu_prepareDefaultConfig(void)
ea8c405f 119{
84100c0f 120 memset(&defaultConfig, 0, sizeof(defaultConfig));
121 defaultConfig.EmuOpt = 0x1d | 0x680; // | confirm_save, cd_leds, 16bit rend
122 defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;
123 defaultConfig.s_PsndRate = 22050;
124 defaultConfig.s_PicoRegion = 0; // auto
125 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
126 defaultConfig.s_PicoCDBuffers = 0;
127 defaultConfig.Frameskip = -1; // auto
128 defaultConfig.volume = 50;
129 defaultConfig.KeyBinds[ 2] = 1<<0; // SACB RLDU
130 defaultConfig.KeyBinds[ 3] = 1<<1;
131 defaultConfig.KeyBinds[ 0] = 1<<2;
132 defaultConfig.KeyBinds[ 1] = 1<<3;
133 defaultConfig.KeyBinds[ 5] = 1<<4;
134 defaultConfig.KeyBinds[ 6] = 1<<5;
135 defaultConfig.KeyBinds[ 7] = 1<<6;
136 defaultConfig.KeyBinds[ 4] = 1<<7;
137 defaultConfig.KeyBinds[13] = 1<<26; // switch rend
138 defaultConfig.KeyBinds[ 8] = 1<<27; // save state
139 defaultConfig.KeyBinds[ 9] = 1<<28; // load state
140 defaultConfig.KeyBinds[12] = 1<<29; // vol up
141 defaultConfig.KeyBinds[11] = 1<<30; // vol down
142 defaultConfig.scaling = 0;
f0f0d2df 143 defaultConfig.turbo_rate = 15;
ea8c405f 144}
145
84100c0f 146void emu_setDefaultConfig(void)
147{
148 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
149 PicoOpt = currentConfig.s_PicoOpt;
150 PsndRate = currentConfig.s_PsndRate;
151 PicoRegionOverride = currentConfig.s_PicoRegion;
152 PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;
153 PicoCDBuffers = currentConfig.s_PicoCDBuffers;
154}
155
ea8c405f 156
602133e1 157static int EmuScanBegin16(unsigned int num)
ea8c405f 158{
159 if (!(Pico.video.reg[1]&8)) num += 8;
602133e1 160 DrawLineDest = (unsigned short *) giz_screen + 321 * num;
ea8c405f 161
c77ca79e 162 if ((currentConfig.EmuOpt&0x4000) && (num&1) == 0) // (Pico.m.frame_count&1))
a8869ad1 163 return 1; // skip next line
164
ea8c405f 165 return 0;
166}
167
602133e1 168static int EmuScanBegin8(unsigned int num)
ea8c405f 169{
170 // draw like the fast renderer
171 if (!(Pico.video.reg[1]&8)) num += 8;
602133e1 172 HighCol = gfx_buffer + 328 * num;
ea8c405f 173
174 return 0;
175}
176
177static void osd_text(int x, int y, const char *text)
178{
499a0be3 179 int len = strlen(text) * 8 / 2;
180 int *p, h;
ea8c405f 181 for (h = 0; h < 8; h++) {
182 p = (int *) ((unsigned short *) giz_screen+x+321*(y+h));
183 p = (int *) ((int)p & ~3); // align
499a0be3 184 memset32(p, 0, len);
ea8c405f 185 }
186 emu_textOut16(x, y, text);
187}
188
499a0be3 189/*
190void log1(void *p1, void *p2)
191{
192 lprintf("%p %p %p\n", p1, p2, DrawLineDest);
193}
194*/
ea8c405f 195
9839d126 196static void cd_leds(void)
197{
198 static int old_reg = 0;
199 unsigned int col_g, col_r, *p;
200
201 if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change
202 old_reg = Pico_mcd->s68k_regs[0];
203
204 p = (unsigned int *)((short *)giz_screen + 321*2+4+2);
205 col_g = (old_reg & 2) ? 0x06000600 : 0;
206 col_r = (old_reg & 1) ? 0xc000c000 : 0;
207 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 321/2 - 12/2 + 1;
208 *p++ = col_g; p+=3; *p++ = col_r; p += 321/2 - 10/2;
209 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
210}
211
212
213static short localPal[0x100];
ea8c405f 214
215static void blit(const char *fps, const char *notice)
216{
217 int emu_opt = currentConfig.EmuOpt;
218
9839d126 219 if (PicoOpt&0x10)
220 {
221 int lines_flags = 224;
ea8c405f 222 // 8bit fast renderer
223 if (Pico.m.dirtyPal) {
224 Pico.m.dirtyPal = 0;
225 vidConvCpyRGB565(localPal, Pico.cram, 0x40);
226 }
84100c0f 227 // a hack for VR
228 if (PicoRead16Hook == PicoSVPRead16)
229 memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);
a8869ad1 230 if (!(Pico.video.reg[12]&1)) lines_flags|=0x10000;
231 if (currentConfig.EmuOpt&0x4000)
c77ca79e 232 lines_flags|=0x40000; // (Pico.m.frame_count&1)?0x20000:0x40000;
9839d126 233 vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
234 }
235 else if (!(emu_opt&0x80))
236 {
237 int lines_flags;
ea8c405f 238 // 8bit accurate renderer
239 if (Pico.m.dirtyPal) {
240 Pico.m.dirtyPal = 0;
241 vidConvCpyRGB565(localPal, Pico.cram, 0x40);
2ec14aec 242 if (Pico.video.reg[0xC]&8) { // shadow/hilight mode
ea8c405f 243 //vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);
9839d126 244 //vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40); // TODO?
84100c0f 245 memcpy32((void *)(localPal+0xc0), (void *)(localPal+0x40), 0x40*2/4);
ea8c405f 246 localPal[0xc0] = 0x0600;
247 localPal[0xd0] = 0xc000;
248 localPal[0xe0] = 0x0000; // reserved pixels for OSD
249 localPal[0xf0] = 0xffff;
250 }
251 /* no support
252 else if (rendstatus & 0x20) { // mid-frame palette changes
253 vidConvCpyRGB565(localPal+0x40, HighPal, 0x40);
254 vidConvCpyRGB565(localPal+0x80, HighPal+0x40, 0x40);
255 } */
256 }
9839d126 257 lines_flags = (Pico.video.reg[1]&8) ? 240 : 224;
a8869ad1 258 if (!(Pico.video.reg[12]&1)) lines_flags|=0x10000;
259 if (currentConfig.EmuOpt&0x4000)
c77ca79e 260 lines_flags|=0x40000; // (Pico.m.frame_count&1)?0x20000:0x40000;
9839d126 261 vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
ea8c405f 262 }
263
264 if (notice || (emu_opt & 2)) {
265 int h = 232;
266 if (notice) osd_text(4, h, notice);
9839d126 267 if (emu_opt & 2) osd_text(OSD_FPS_X, h, fps);
ea8c405f 268 }
ea8c405f 269
602133e1 270 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
9839d126 271 cd_leds();
ea8c405f 272}
273
274// clears whole screen or just the notice area (in all buffers)
275static void clearArea(int full)
276{
277 if (giz_screen == NULL)
84100c0f 278 giz_screen = fb_lock(1);
ea8c405f 279 if (full) memset32(giz_screen, 0, 320*240*2/4);
499a0be3 280 else memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
c77ca79e 281
282 if (currentConfig.EmuOpt&0x8000) {
84100c0f 283 fb_unlock();
284 giz_screen = fb_lock(0);
c77ca79e 285 if (full) memset32(giz_screen, 0, 320*240*2/4);
286 else memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
287 }
ea8c405f 288}
289
290static void vidResetMode(void)
291{
84100c0f 292 giz_screen = fb_lock(1);
499a0be3 293
ea8c405f 294 if (PicoOpt&0x10) {
295 } else if (currentConfig.EmuOpt&0x80) {
296 PicoDrawSetColorFormat(1);
602133e1 297 PicoScanBegin = EmuScanBegin16;
ea8c405f 298 } else {
499a0be3 299 PicoDrawSetColorFormat(-1);
602133e1 300 PicoScanBegin = EmuScanBegin8;
ea8c405f 301 }
499a0be3 302 if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) {
ea8c405f 303 // setup pal for 8-bit modes
304 localPal[0xc0] = 0x0600;
305 localPal[0xd0] = 0xc000;
306 localPal[0xe0] = 0x0000; // reserved pixels for OSD
307 localPal[0xf0] = 0xffff;
308 }
309 Pico.m.dirtyPal = 1;
499a0be3 310
311 memset32(giz_screen, 0, 321*240*2/4);
c77ca79e 312 if (currentConfig.EmuOpt&0x8000) {
84100c0f 313 fb_unlock();
314 giz_screen = fb_lock(0);
c77ca79e 315 memset32(giz_screen, 0, 321*240*2/4);
316 }
84100c0f 317 fb_unlock();
ea8c405f 318 giz_screen = NULL;
319}
320
da42200b 321/*
fa283c9a 322#include <stdarg.h>
323static void stdbg(const char *fmt, ...)
ea8c405f 324{
fa283c9a 325 static int cnt = 0;
326 va_list vl;
327
328 sprintf(noticeMsg, "%x ", cnt++);
329 va_start(vl, fmt);
330 vsnprintf(noticeMsg+strlen(noticeMsg), sizeof(noticeMsg)-strlen(noticeMsg), fmt, vl);
331 va_end(vl);
332
333 noticeMsgTime = GetTickCount();
334}
da42200b 335*/
fa283c9a 336
337static void updateSound(int len)
338{
339 if (PicoOpt&8) len<<=1;
340
341 snd_all_samples += len;
342 PsndOut += len;
343 if (PsndOut - snd_cbuff >= snd_cbuf_samples)
344 {
da42200b 345 //if (PsndOut - snd_cbuff != snd_cbuf_samples)
346 // stdbg("snd diff is %i, not %i", PsndOut - snd_cbuff, snd_cbuf_samples);
fa283c9a 347 PsndOut = snd_cbuff;
348 }
349}
350
351
352static void SkipFrame(void)
353{
354 PicoSkipFrame=1;
ea8c405f 355 PicoFrame();
356 PicoSkipFrame=0;
357}
358
c77ca79e 359/* forced frame to front buffer */
0fc0e241 360void emu_forcedFrame(int opts)
ea8c405f 361{
fa283c9a 362 int po_old = PicoOpt;
363 int eo_old = currentConfig.EmuOpt;
364
0fc0e241 365 PicoOpt &= ~0x10;
366 PicoOpt |= opts|POPT_ACC_SPRITES;
fa283c9a 367 currentConfig.EmuOpt |= 0x80;
368
369 if (giz_screen == NULL)
84100c0f 370 giz_screen = fb_lock(1);
fa283c9a 371
372 PicoDrawSetColorFormat(1);
602133e1 373 PicoScanBegin = EmuScanBegin16;
fa283c9a 374 Pico.m.dirtyPal = 1;
375 PicoFrameDrawOnly();
376
84100c0f 377 fb_unlock();
fa283c9a 378 giz_screen = NULL;
379
380 PicoOpt = po_old;
381 currentConfig.EmuOpt = eo_old;
ea8c405f 382}
383
fa283c9a 384
9839d126 385static void RunEvents(unsigned int which)
386{
da42200b 387 if (which & 0x1800) // save or load (but not both)
388 {
9839d126 389 int do_it = 1;
da42200b 390
391 if (PsndOut != NULL)
392 FrameworkAudio_SetPause(1);
393 if (giz_screen == NULL)
84100c0f 394 giz_screen = fb_lock(1);
9839d126 395 if ( emu_checkSaveFile(state_slot) &&
a8869ad1 396 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
397 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
398 {
9839d126 399 int keys;
400 blit("", (which & 0x1000) ? "LOAD STATE? (PLAY=yes, STOP=no)" : "OVERWRITE SAVE? (PLAY=yes, STOP=no)");
401 while( !((keys = Framework_PollGetButtons()) & (BTN_PLAY|BTN_STOP)) )
402 Sleep(50);
403 if (keys & BTN_STOP) do_it = 0;
da42200b 404 while( ((keys = Framework_PollGetButtons()) & (BTN_PLAY|BTN_STOP)) ) // wait for release
405 Sleep(50);
9839d126 406 clearArea(0);
407 }
da42200b 408
409 if (do_it)
410 {
9839d126 411 osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");
c77ca79e 412 PicoStateProgressCB = emu_stateCb;
9839d126 413 emu_SaveLoadGame((which & 0x1000) >> 12, 0);
414 PicoStateProgressCB = NULL;
da42200b 415 Sleep(0);
9839d126 416 }
417
da42200b 418 if (PsndOut != NULL)
419 FrameworkAudio_SetPause(0);
9839d126 420 reset_timing = 1;
421 }
da42200b 422 if (which & 0x0400) // switch renderer
423 {
a8869ad1 424 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }
425 else { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
9839d126 426
427 vidResetMode();
428
429 if (PicoOpt&0x10) {
430 strcpy(noticeMsg, " 8bit fast renderer");
431 } else if (currentConfig.EmuOpt&0x80) {
432 strcpy(noticeMsg, "16bit accurate renderer");
433 } else {
434 strcpy(noticeMsg, " 8bit accurate renderer");
435 }
436
437 noticeMsgTime = GetTickCount();
438 }
da42200b 439 if (which & 0x0300)
440 {
9839d126 441 if(which&0x0200) {
442 state_slot -= 1;
443 if(state_slot < 0) state_slot = 9;
444 } else {
445 state_slot += 1;
446 if(state_slot > 9) state_slot = 0;
447 }
448 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
449 noticeMsgTime = GetTickCount();
450 }
451}
452
ea8c405f 453static void updateKeys(void)
454{
2ec14aec 455 unsigned int keys, allActions[2] = { 0, 0 }, events;
456 static unsigned int prevEvents = 0;
457 int i;
458
459 keys = Framework_PollGetButtons();
fa283c9a 460 if (keys & BTN_HOME)
2ec14aec 461 engineState = PGS_Menu;
2ec14aec 462
463 keys &= CONFIGURABLE_KEYS;
464
465 for (i = 0; i < 32; i++)
466 {
fa283c9a 467 if (keys & (1 << i))
468 {
2ec14aec 469 int pl, acts = currentConfig.KeyBinds[i];
470 if (!acts) continue;
471 pl = (acts >> 16) & 1;
bdec53c9 472 if (kb_combo_keys & (1 << i))
fa283c9a 473 {
da310283 474 int u = i+1, acts_c = acts & kb_combo_acts;
2ec14aec 475 // let's try to find the other one
bdec53c9 476 if (acts_c) {
da310283 477 for (; u < 32; u++)
bdec53c9 478 if ( (keys & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {
479 allActions[pl] |= acts_c & currentConfig.KeyBinds[u];
2ec14aec 480 keys &= ~((1 << i) | (1 << u));
481 break;
482 }
bdec53c9 483 }
2ec14aec 484 // add non-combo actions if combo ones were not found
485 if (!acts_c || u == 32)
bdec53c9 486 allActions[pl] |= acts & ~kb_combo_acts;
fa283c9a 487 } else {
2ec14aec 488 allActions[pl] |= acts;
489 }
490 }
491 }
492
f0f0d2df 493 PicoPad[0] = allActions[0] & 0xfff;
494 PicoPad[1] = allActions[1] & 0xfff;
495
496 if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
497 if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
2ec14aec 498
499 events = (allActions[0] | allActions[1]) >> 16;
500
501 // volume is treated in special way and triggered every frame
fa283c9a 502 if ((events & 0x6000) && PsndOut != NULL)
503 {
2ec14aec 504 int vol = currentConfig.volume;
505 if (events & 0x2000) {
506 if (vol < 100) vol++;
507 } else {
508 if (vol > 0) vol--;
509 }
fa283c9a 510 FrameworkAudio_SetVolume(vol, vol);
c77ca79e 511 sprintf(noticeMsg, "VOL: %02i ", vol);
2ec14aec 512 noticeMsgTime = GetTickCount();
513 currentConfig.volume = vol;
514 }
515
516 events &= ~prevEvents;
9839d126 517 if (events) RunEvents(events);
2ec14aec 518 if (movie_data) emu_updateMovie();
519
520 prevEvents = (allActions[0] | allActions[1]) >> 16;
ea8c405f 521}
522
84100c0f 523void emu_platformDebugCat(char *str)
524{
525 // nothing
526}
fa283c9a 527
ea8c405f 528static void simpleWait(DWORD until)
529{
9839d126 530 DWORD tval;
531 int diff;
532
533 tval = GetTickCount();
534 diff = (int)until - (int)tval;
535 if (diff >= 2)
536 Sleep(diff - 1);
537
538 while ((tval = GetTickCount()) < until && until - tval < 512) // some simple overflow detection
539 spend_cycles(1024*2);
ea8c405f 540}
541
542void emu_Loop(void)
543{
fa283c9a 544 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
ea8c405f 545 char fpsbuff[24]; // fps count c string
546 DWORD tval, tval_prev = 0, tval_thissec = 0; // timing
fa283c9a 547 int frames_done = 0, frames_shown = 0, oldmodes = 0, sec_ms = 1000;
ea8c405f 548 int target_fps, target_frametime, lim_time, tval_diff, i;
549 char *notice = NULL;
550
551 lprintf("entered emu_Loop()\n");
552
553 fpsbuff[0] = 0;
554
555 // make sure we are in correct mode
556 vidResetMode();
557 if (currentConfig.scaling) PicoOpt|=0x4000;
558 else PicoOpt&=~0x4000;
559 Pico.m.dirtyPal = 1;
560 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
bdec53c9 561 emu_findKeyBindCombos();
ea8c405f 562
563 // pal/ntsc might have changed, reset related stuff
564 target_fps = Pico.m.pal ? 50 : 60;
fa283c9a 565 target_frametime = Pico.m.pal ? (1000<<8)/50 : (1000<<8)/60+1;
ea8c405f 566 reset_timing = 1;
567
fa283c9a 568 // prepare CD buffer
602133e1 569 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();
fa283c9a 570
ea8c405f 571 // prepare sound stuff
fa283c9a 572 PsndOut = NULL;
573 if (currentConfig.EmuOpt & 4)
574 {
da42200b 575 int ret, snd_excess_add, stereo;
ea8c405f 576 if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
9d917eea 577 PsndRerate(Pico.m.frame_count ? 1 : 0);
ea8c405f 578 }
da42200b 579 stereo=(PicoOpt&8)>>3;
ea8c405f 580 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
fa283c9a 581 snd_cbuf_samples = (PsndRate<<stereo) * 16 / target_fps;
ea8c405f 582 lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
f3d1de29 583 PsndRate, PsndLen, snd_excess_add, stereo, Pico.m.pal);
fa283c9a 584 ret = FrameworkAudio_Init(PsndRate, snd_cbuf_samples, stereo);
585 if (ret != 0) {
586 lprintf("FrameworkAudio_Init() failed: %i\n", ret);
587 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
588 noticeMsgTime = GetTickCount();
589 currentConfig.EmuOpt &= ~4;
590 } else {
591 FrameworkAudio_SetVolume(currentConfig.volume, currentConfig.volume);
592 PicoWriteSound = updateSound;
593 snd_cbuff = FrameworkAudio_56448Buffer();
594 PsndOut = snd_cbuff + snd_cbuf_samples / 2; // start writing at the middle
595 snd_all_samples = 0;
596 PsndRate_old = PsndRate;
597 PicoOpt_old = PicoOpt;
598 pal_old = Pico.m.pal;
599 }
ea8c405f 600 }
601
ea8c405f 602 // loop?
603 while (engineState == PGS_Running)
604 {
605 int modes;
606
607 tval = GetTickCount();
608 if (reset_timing || tval < tval_prev) {
da42200b 609 //stdbg("timing reset");
ea8c405f 610 reset_timing = 0;
611 tval_thissec = tval;
612 frames_shown = frames_done = 0;
613 }
614
615 // show notice message?
616 if (noticeMsgTime) {
617 static int noticeMsgSum;
618 if (tval - noticeMsgTime > 2000) { // > 2.0 sec
619 noticeMsgTime = 0;
620 clearArea(0);
621 notice = 0;
622 } else {
623 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
624 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
625 notice = noticeMsg;
626 }
627 }
628
629 // check for mode changes
630 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
631 if (modes != oldmodes) {
ea8c405f 632 oldmodes = modes;
633 clearArea(1);
634 }
635
636 // second passed?
fa283c9a 637 if (tval - tval_thissec >= sec_ms)
ea8c405f 638 {
639#ifdef BENCHMARK
640 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
641 if(++bench == 10) {
642 bench = 0;
643 bench_fps_s = bench_fps;
644 bf[bfp++ & 3] = bench_fps;
645 bench_fps = 0;
646 }
647 bench_fps += frames_shown;
648 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
649#else
650 if(currentConfig.EmuOpt & 2)
651 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
652#endif
fa283c9a 653 //tval_thissec += 1000;
654 tval_thissec += sec_ms;
ea8c405f 655
fa283c9a 656 if (PsndOut != NULL)
657 {
f3d1de29 658 /* some code which tries to sync things to audio clock, the dirty way */
659 static int audio_skew_prev = 0;
660 int audio_skew, adj, co = 9, shift = 7;
fa283c9a 661 audio_skew = snd_all_samples*2 - FrameworkAudio_BufferPos();
f3d1de29 662 if (PsndRate == 22050) co = 10;
663 if (PsndRate > 22050) co = 11;
664 if (PicoOpt&8) shift++;
665 if (audio_skew < 0) {
666 adj = -((-audio_skew) >> shift);
667 if (audio_skew > -(6<<co)) adj>>=1;
668 if (audio_skew > -(4<<co)) adj>>=1;
669 if (audio_skew > -(2<<co)) adj>>=1;
670 if (audio_skew > audio_skew_prev) adj>>=2; // going up already
671 } else {
672 adj = audio_skew >> shift;
673 if (audio_skew < (6<<co)) adj>>=1;
674 if (audio_skew < (4<<co)) adj>>=1;
675 if (audio_skew < (2<<co)) adj>>=1;
676 if (audio_skew < audio_skew_prev) adj>>=2;
677 }
678 audio_skew_prev = audio_skew;
fa283c9a 679 target_frametime += adj;
680 sec_ms = (target_frametime * target_fps) >> 8;
da42200b 681 //stdbg("%i %i %i", audio_skew, adj, sec_ms);
ea8c405f 682 frames_done = frames_shown = 0;
fa283c9a 683 }
684 else if (currentConfig.Frameskip < 0) {
ea8c405f 685 frames_done -= target_fps; if (frames_done < 0) frames_done = 0;
686 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
687 if (frames_shown > frames_done) frames_shown = frames_done;
fa283c9a 688 } else {
689 frames_done = frames_shown = 0;
ea8c405f 690 }
691 }
692#ifdef PFRAMES
693 sprintf(fpsbuff, "%i", Pico.m.frame_count);
694#endif
695
696 tval_prev = tval;
697 lim_time = (frames_done+1) * target_frametime;
698 if (currentConfig.Frameskip >= 0) // frameskip enabled
699 {
700 for (i = 0; i < currentConfig.Frameskip; i++) {
701 updateKeys();
fa283c9a 702 SkipFrame(); frames_done++;
ea8c405f 703 if (PsndOut) { // do framelimitting if sound is enabled
704 int tval_diff;
705 tval = GetTickCount();
706 tval_diff = (int)(tval - tval_thissec) << 8;
707 if (tval_diff < lim_time) // we are too fast
708 simpleWait(tval + ((lim_time - tval_diff)>>8));
709 }
710 lim_time += target_frametime;
711 }
712 }
713 else // auto frameskip
714 {
715 int tval_diff;
716 tval = GetTickCount();
717 tval_diff = (int)(tval - tval_thissec) << 8;
718 if (tval_diff > lim_time)
719 {
720 // no time left for this frame - skip
721 if (tval_diff - lim_time >= (300<<8)) {
722 /* something caused a slowdown for us (disk access? cache flush?)
723 * try to recover by resetting timing... */
724 reset_timing = 1;
725 continue;
726 }
727 updateKeys();
fa283c9a 728 SkipFrame(); frames_done++;
ea8c405f 729 continue;
730 }
731 }
732
733 updateKeys();
734
c77ca79e 735 if (currentConfig.EmuOpt&0x80)
736 /* be sure correct framebuffer is locked */
84100c0f 737 giz_screen = fb_lock((currentConfig.EmuOpt&0x8000) ? 0 : 1);
c77ca79e 738
ea8c405f 739 PicoFrame();
499a0be3 740
741 if (giz_screen == NULL)
84100c0f 742 giz_screen = fb_lock((currentConfig.EmuOpt&0x8000) ? 0 : 1);
499a0be3 743
ea8c405f 744 blit(fpsbuff, notice);
745
746 if (giz_screen != NULL) {
84100c0f 747 fb_unlock();
ea8c405f 748 giz_screen = NULL;
749 }
750
c77ca79e 751 if (currentConfig.EmuOpt&0x2000)
752 Framework2D_WaitVSync();
753
754 if (currentConfig.EmuOpt&0x8000)
84100c0f 755 fb_flip();
c77ca79e 756
ea8c405f 757 // check time
758 tval = GetTickCount();
759 tval_diff = (int)(tval - tval_thissec) << 8;
760
761 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300<<8)) // slowdown detection
762 reset_timing = 1;
763 else if (PsndOut != NULL || currentConfig.Frameskip < 0)
764 {
765 // sleep if we are still too fast
766 if (tval_diff < lim_time)
767 {
768 // we are too fast
769 simpleWait(tval + ((lim_time - tval_diff) >> 8));
770 }
771 }
772
773 frames_done++; frames_shown++;
774 }
775
776
602133e1 777 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
ea8c405f 778
fa283c9a 779 if (PsndOut != NULL) {
780 PsndOut = snd_cbuff = NULL;
781 FrameworkAudio_Close();
782 }
783
ea8c405f 784 // save SRAM
785 if ((currentConfig.EmuOpt & 1) && SRam.changed) {
c77ca79e 786 emu_stateCb("Writing SRAM/BRAM..");
ea8c405f 787 emu_SaveLoadGame(0, 1);
788 SRam.changed = 0;
789 }
790}
791
792
793void emu_ResetGame(void)
794{
1cb1584b 795 PicoReset();
ea8c405f 796 reset_timing = 1;
797}
e5f426aa 798
fast MegaDrive/MegaCD/32X emulator