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recompilation-caused frameskip workaround
[pcsx_rearmed.git] / plugins / dfsound / spu.c
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ef79bbde
P		 1/***************************************************************************
2 spu.c - description
3 -------------------
4 begin : Wed May 15 2002
5 copyright : (C) 2002 by Pete Bernert
6 email : BlackDove@addcom.de
07a6dd2c 7
8 Portions (C) GraÅžvydas "notaz" Ignotas, 2010-2011
9
ef79bbde
P		 10 ***************************************************************************/
11/***************************************************************************
12 * *
13 * This program is free software; you can redistribute it and/or modify *
14 * it under the terms of the GNU General Public License as published by *
15 * the Free Software Foundation; either version 2 of the License, or *
16 * (at your option) any later version. See also the license.txt file for *
17 * additional informations. *
18 * *
19 ***************************************************************************/
20
21#include "stdafx.h"
22
23#define _IN_SPU
24
25#include "externals.h"
3fc2a4c2 26#include "registers.h"
ef79bbde
P		 27#include "cfg.h"
28#include "dsoundoss.h"
ef79bbde
P		 29
30#ifdef ENABLE_NLS
31#include <libintl.h>
32#include <locale.h>
33#define _(x) gettext(x)
34#define N_(x) (x)
35#else
36#define _(x) (x)
37#define N_(x) (x)
38#endif
39
a80ae4a0 40#ifdef __ARM_ARCH_7A__
1775933a 41 #define ssat32_to_16(v) \
42 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
43#else
44 #define ssat32_to_16(v) do { \
45 if (v < -32768) v = -32768; \
46 else if (v > 32767) v = 32767; \
47 } while (0)
48#endif
49
6d866bb7 50/*
ef79bbde
P		 51#if defined (USEMACOSX)
52static char * libraryName = N_("Mac OS X Sound");
53#elif defined (USEALSA)
54static char * libraryName = N_("ALSA Sound");
55#elif defined (USEOSS)
56static char * libraryName = N_("OSS Sound");
57#elif defined (USESDL)
58static char * libraryName = N_("SDL Sound");
59#elif defined (USEPULSEAUDIO)
60static char * libraryName = N_("PulseAudio Sound");
61#else
62static char * libraryName = N_("NULL Sound");
63#endif
64
65static char * libraryInfo = N_("P.E.Op.S. Sound Driver V1.7\nCoded by Pete Bernert and the P.E.Op.S. team\n");
6d866bb7 66*/
ef79bbde
P		 67
68// globals
69
70// psx buffer / addresses
71
72unsigned short regArea[10000];
73unsigned short spuMem[256*1024];
74unsigned char * spuMemC;
75unsigned char * pSpuIrq=0;
76unsigned char * pSpuBuffer;
77unsigned char * pMixIrq=0;
78
79// user settings
80
9e7a7352 81int iVolume=768; // 1024 is 1.0
ef79bbde
P		 82int iXAPitch=1;
83int iUseTimer=2;
84int iSPUIRQWait=1;
85int iDebugMode=0;
86int iRecordMode=0;
87int iUseReverb=2;
88int iUseInterpolation=2;
ef79bbde
P		 89
90// MAIN infos struct for each channel
91
92SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling)
93REVERBInfo rvb;
94
b1094d0e 95unsigned int dwNoiseVal; // global noise generator
96unsigned int dwNoiseCount;
ef79bbde
P		 97int iSpuAsyncWait=0;
98
99unsigned short spuCtrl=0; // some vars to store psx reg infos
100unsigned short spuStat=0;
101unsigned short spuIrq=0;
102unsigned long spuAddr=0xffffffff; // address into spu mem
103int bEndThread=0; // thread handlers
104int bThreadEnded=0;
105int bSpuInit=0;
106int bSPUIsOpen=0;
107
108static pthread_t thread = (pthread_t)-1; // thread id (linux)
109
174c454a 110unsigned int dwNewChannel=0; // flags for faster testing, if new channel starts
111unsigned int dwChannelOn=0; // not silent channels
112unsigned int dwPendingChanOff=0;
113unsigned int dwChannelDead=0; // silent+not useful channels
ef79bbde
P		 114
115void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq
116void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0;
117
118// certain globals (were local before, but with the new timeproc I need em global)
119
6d866bb7 120static const int f[8][2] = { { 0, 0 },
ef79bbde
P		 121 { 60, 0 },
122 { 115, -52 },
123 { 98, -55 },
124 { 122, -60 } };
b17618c0 125int ChanBuf[NSSIZE+3];
126int SSumLR[(NSSIZE+3)*2];
ef79bbde
P		 127int iFMod[NSSIZE];
128int iCycle = 0;
129short * pS;
130
131int lastch=-1; // last channel processed on spu irq in timer mode
132static int lastns=0; // last ns pos
133static int iSecureStart=0; // secure start counter
134
983a7cfd 135#define CDDA_BUFFER_SIZE (16384 * sizeof(uint32_t)) // must be power of 2
136
ef79bbde
P		 137////////////////////////////////////////////////////////////////////////
138// CODE AREA
139////////////////////////////////////////////////////////////////////////
140
141// dirty inline func includes
142
143#include "reverb.c"
144#include "adsr.c"
145
146////////////////////////////////////////////////////////////////////////
147// helpers for simple interpolation
148
149//
150// easy interpolation on upsampling, no special filter, just "Pete's common sense" tm
151//
152// instead of having n equal sample values in a row like:
153// ____
154// |____
155//
156// we compare the current delta change with the next delta change.
157//
158// if curr_delta is positive,
159//
160// - and next delta is smaller (or changing direction):
161// \.
162// -__
163//
164// - and next delta significant (at least twice) bigger:
165// --_
166// \.
167//
168// - and next delta is nearly same:
169// \.
170// \.
171//
172//
173// if curr_delta is negative,
174//
175// - and next delta is smaller (or changing direction):
176// _--
177// /
178//
179// - and next delta significant (at least twice) bigger:
180// /
181// __-
182//
183// - and next delta is nearly same:
184// /
185// /
186//
187
188
189INLINE void InterpolateUp(int ch)
190{
191 if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass
192 {
193 const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val
194 const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :)
195
196 s_chan[ch].SB[32]=0;
197
198 if(id1>0) // curr delta positive
199 {
200 if(id2<id1)
201 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
202 else
203 if(id2<(id1<<1))
204 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
205 else
206 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
207 }
208 else // curr delta negative
209 {
210 if(id2>id1)
211 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
212 else
213 if(id2>(id1<<1))
214 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
215 else
216 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
217 }
218 }
219 else
220 if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass
221 {
222 s_chan[ch].SB[32]=0;
223
224 s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L;
225 if(s_chan[ch].sinc<=0x8000)
226 s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1));
227 else s_chan[ch].SB[29]+=s_chan[ch].SB[28];
228 }
229 else // no flags? add bigger val (if possible), calc smaller step, set flag1
230 s_chan[ch].SB[29]+=s_chan[ch].SB[28];
231}
232
233//
234// even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm
235//
236
237INLINE void InterpolateDown(int ch)
238{
239 if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val?
240 {
241 s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight
242 if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals?
243 s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight
244 }
245}
246
247////////////////////////////////////////////////////////////////////////
248// helpers for gauss interpolation
249
250#define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos])
251#define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
252
253#include "gauss_i.h"
254
255////////////////////////////////////////////////////////////////////////
256
257#include "xa.c"
258
259////////////////////////////////////////////////////////////////////////
260// START SOUND... called by main thread to setup a new sound on a channel
261////////////////////////////////////////////////////////////////////////
262
263INLINE void StartSound(int ch)
264{
265 StartADSR(ch);
266 StartREVERB(ch);
267
b00afb77 268 // fussy timing issues - do in VoiceOn
269 //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start
270 //s_chan[ch].bStop=0;
271 //s_chan[ch].bOn=1;
ef79bbde 272
381ea103 273 s_chan[ch].SB[26]=0; // init mixing vars
274 s_chan[ch].SB[27]=0;
ef79bbde
P		 275 s_chan[ch].iSBPos=28;
276
ef79bbde
P		 277 s_chan[ch].SB[29]=0; // init our interpolation helpers
278 s_chan[ch].SB[30]=0;
279
280 if(iUseInterpolation>=2) // gauss interpolation?
281 {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding
282 else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding
283
284 dwNewChannel&=~(1<<ch); // clear new channel bit
285}
286
287////////////////////////////////////////////////////////////////////////
288// ALL KIND OF HELPERS
289////////////////////////////////////////////////////////////////////////
290
07a6dd2c 291INLINE int FModChangeFrequency(int ch,int ns)
ef79bbde 292{
7e44d49d 293 unsigned int NP=s_chan[ch].iRawPitch;
07a6dd2c 294 int sinc;
ef79bbde
P		 295
296 NP=((32768L+iFMod[ns])*NP)/32768L;
297
298 if(NP>0x3fff) NP=0x3fff;
299 if(NP<0x1) NP=0x1;
300
7e44d49d 301 sinc=NP<<4; // calc frequency
ef79bbde 302 if(iUseInterpolation==1) // freq change in simple interpolation mode
07a6dd2c 303 s_chan[ch].SB[32]=1;
ef79bbde 304 iFMod[ns]=0;
07a6dd2c 305
306 return sinc;
ef79bbde
P		 307}
308
309////////////////////////////////////////////////////////////////////////
310
ef79bbde
P		 311INLINE void StoreInterpolationVal(int ch,int fa)
312{
313 if(s_chan[ch].bFMod==2) // fmod freq channel
314 s_chan[ch].SB[29]=fa;
315 else
316 {
381ea103 317 ssat32_to_16(fa);
ef79bbde
P		 318
319 if(iUseInterpolation>=2) // gauss/cubic interpolation
320 {
321 int gpos = s_chan[ch].SB[28];
322 gval0 = fa;
323 gpos = (gpos+1) & 3;
324 s_chan[ch].SB[28] = gpos;
325 }
326 else
327 if(iUseInterpolation==1) // simple interpolation
328 {
329 s_chan[ch].SB[28] = 0;
330 s_chan[ch].SB[29] = s_chan[ch].SB[30]; // -> helpers for simple linear interpolation: delay real val for two slots, and calc the two deltas, for a 'look at the future behaviour'
331 s_chan[ch].SB[30] = s_chan[ch].SB[31];
332 s_chan[ch].SB[31] = fa;
333 s_chan[ch].SB[32] = 1; // -> flag: calc new interolation
334 }
335 else s_chan[ch].SB[29]=fa; // no interpolation
336 }
337}
338
339////////////////////////////////////////////////////////////////////////
340
341INLINE int iGetInterpolationVal(int ch)
342{
343 int fa;
344
345 if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29];
346
347 switch(iUseInterpolation)
348 {
349 //--------------------------------------------------//
350 case 3: // cubic interpolation
351 {
352 long xd;int gpos;
353 xd = ((s_chan[ch].spos) >> 1)+1;
354 gpos = s_chan[ch].SB[28];
355
356 fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0;
357 fa *= (xd - (2<<15)) / 6;
358 fa >>= 15;
359 fa += gval(2) - gval(1) - gval(1) + gval0;
360 fa *= (xd - (1<<15)) >> 1;
361 fa >>= 15;
362 fa += gval(1) - gval0;
363 fa *= xd;
364 fa >>= 15;
365 fa = fa + gval0;
366
367 } break;
368 //--------------------------------------------------//
369 case 2: // gauss interpolation
370 {
371 int vl, vr;int gpos;
372 vl = (s_chan[ch].spos >> 6) & ~3;
373 gpos = s_chan[ch].SB[28];
374 vr=(gauss[vl]*gval0)&~2047;
375 vr+=(gauss[vl+1]*gval(1))&~2047;
376 vr+=(gauss[vl+2]*gval(2))&~2047;
377 vr+=(gauss[vl+3]*gval(3))&~2047;
378 fa = vr>>11;
379 } break;
380 //--------------------------------------------------//
381 case 1: // simple interpolation
382 {
383 if(s_chan[ch].sinc<0x10000L) // -> upsampling?
384 InterpolateUp(ch); // --> interpolate up
385 else InterpolateDown(ch); // --> else down
386 fa=s_chan[ch].SB[29];
387 } break;
388 //--------------------------------------------------//
389 default: // no interpolation
390 {
391 fa=s_chan[ch].SB[29];
392 } break;
393 //--------------------------------------------------//
394 }
395
396 return fa;
397}
398
3fc2a4c2 399static void do_irq(void)
400{
401 if(!(spuStat & STAT_IRQ))
402 {
403 spuStat |= STAT_IRQ;
404 if(irqCallback) irqCallback();
405 }
406}
407
381ea103 408static void decode_block_data(int *dest, const unsigned char *src, int predict_nr, int shift_factor)
409{
410 int nSample;
411 int fa, s_1, s_2, d, s;
412
413 s_1 = dest[27];
414 s_2 = dest[26];
415
416 for (nSample = 0; nSample < 28; src++)
417 {
418 d = (int)*src;
419 s = (int)(signed short)((d & 0x0f) << 12);
420
421 fa = s >> shift_factor;
422 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
423 s_2=s_1;s_1=fa;
424
425 dest[nSample++] = fa;
426
427 s = (int)(signed short)((d & 0xf0) << 8);
428 fa = s >> shift_factor;
429 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
430 s_2=s_1;s_1=fa;
431
432 dest[nSample++] = fa;
433 }
434}
435
e11ae5c5 436static int decode_block(int ch)
437{
438 unsigned char *start;
381ea103 439 int predict_nr,shift_factor,flags;
e11ae5c5 440 int ret = 0;
441
e11ae5c5 442 start=s_chan[ch].pCurr; // set up the current pos
174c454a 443 if(dwPendingChanOff&(1<<ch))
e11ae5c5 444 {
445 dwChannelOn&=~(1<<ch); // -> turn everything off
3fc2a4c2 446 dwPendingChanOff&=~(1<<ch);
e11ae5c5 447 s_chan[ch].bStop=1;
448 s_chan[ch].ADSRX.EnvelopeVol=0;
e11ae5c5 449 }
450
3fc2a4c2 451 //////////////////////////////////////////// irq check
452
453 if(spuCtrl&CTRL_IRQ)
454 {
455 if(pSpuIrq == start) // irq address reached?
456 {
457 do_irq(); // -> call main emu
458 ret = 1;
459 }
460 }
e11ae5c5 461
381ea103 462 predict_nr=(int)start[0];
e11ae5c5 463 shift_factor=predict_nr&0xf;
464 predict_nr >>= 4;
e11ae5c5 465
381ea103 466 decode_block_data(s_chan[ch].SB, start + 2, predict_nr, shift_factor);
e11ae5c5 467
e11ae5c5 468 //////////////////////////////////////////// flag handler
469
381ea103 470 flags=(int)start[1];
471 if(flags&4)
472 s_chan[ch].pLoop=start; // loop adress
e11ae5c5 473
381ea103 474 start+=16;
e11ae5c5 475 if(flags&1) // 1: stop/loop
476 {
3fc2a4c2 477 if(!(flags&2))
478 dwPendingChanOff|=1<<ch;
479
480 start = s_chan[ch].pLoop;
e11ae5c5 481 }
482
174c454a 483 if (start - spuMemC >= 0x80000) {
484 // most likely wrong
485 start = spuMemC;
486 printf("ch%d oflow\n", ch);
487 }
e11ae5c5 488
381ea103 489 s_chan[ch].pCurr = start; // store values for next cycle
be1cb678 490 s_chan[ch].bJump = flags & 1;
e11ae5c5 491
492 return ret;
493}
494
07a6dd2c 495// do block, but ignore sample data
496static int skip_block(int ch)
497{
498 unsigned char *start = s_chan[ch].pCurr;
499 int flags = start[1];
500 int ret = 0;
501
07a6dd2c 502 if(start == pSpuIrq)
503 {
504 do_irq();
505 ret = 1;
506 }
507
381ea103 508 if(flags & 4)
be1cb678 509 s_chan[ch].pLoop = start;
07a6dd2c 510
511 s_chan[ch].pCurr += 16;
512
513 if(flags & 1)
514 s_chan[ch].pCurr = s_chan[ch].pLoop;
515
be1cb678 516 s_chan[ch].bJump = flags & 1;
07a6dd2c 517 return ret;
518}
519
520#define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
521static int do_samples_##name(int ch, int ns, int ns_to) \
522{ \
523 int sinc = s_chan[ch].sinc; \
524 int spos = s_chan[ch].spos; \
381ea103 525 int sbpos = s_chan[ch].iSBPos; \
526 int *SB = s_chan[ch].SB; \
07a6dd2c 527 int ret = -1; \
528 int d, fa; \
529 interp_start; \
530 \
531 for (; ns < ns_to; ns++) \
532 { \
533 fmod_code; \
534 \
535 while (spos >= 0x10000) \
536 { \
381ea103 537 if(sbpos == 28) \
07a6dd2c 538 { \
381ea103 539 sbpos = 0; \
07a6dd2c 540 d = decode_block(ch); \
541 if(d && iSPUIRQWait) \
542 { \
543 ret = ns; \
544 goto out; \
545 } \
546 } \
547 \
381ea103 548 fa = SB[sbpos++]; \
07a6dd2c 549 interp1_code; \
550 spos -= 0x10000; \
551 } \
552 \
553 interp2_code; \
554 spos += sinc; \
555 } \
556 \
557out: \
558 s_chan[ch].sinc = sinc; \
559 s_chan[ch].spos = spos; \
381ea103 560 s_chan[ch].iSBPos = sbpos; \
07a6dd2c 561 interp_end; \
562 \
563 return ret; \
564}
565
566#define fmod_recv_check \
567 if(s_chan[ch].bFMod==1 && iFMod[ns]) \
568 sinc = FModChangeFrequency(ch,ns)
569
570make_do_samples(default, fmod_recv_check, ,
571 StoreInterpolationVal(ch, fa),
572 ChanBuf[ns] = iGetInterpolationVal(ch), )
573make_do_samples(noint, , fa = s_chan[ch].SB[29], , ChanBuf[ns] = fa, s_chan[ch].SB[29] = fa)
574
575#define simple_interp_store \
576 s_chan[ch].SB[28] = 0; \
577 s_chan[ch].SB[29] = s_chan[ch].SB[30]; \
578 s_chan[ch].SB[30] = s_chan[ch].SB[31]; \
579 s_chan[ch].SB[31] = fa; \
580 s_chan[ch].SB[32] = 1
581
582#define simple_interp_get \
583 if(sinc<0x10000) /* -> upsampling? */ \
584 InterpolateUp(ch); /* --> interpolate up */ \
585 else InterpolateDown(ch); /* --> else down */ \
586 ChanBuf[ns] = s_chan[ch].SB[29]
587
588make_do_samples(simple, , ,
589 simple_interp_store, simple_interp_get, )
590
591static int do_samples_noise(int ch, int ns, int ns_to)
592{
b1094d0e 593 int level, shift, bit;
594
07a6dd2c 595 s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns);
596 while (s_chan[ch].spos >= 28*0x10000)
597 {
598 skip_block(ch);
599 s_chan[ch].spos -= 28*0x10000;
600 }
601
b1094d0e 602 // modified from DrHell/shalma, no fraction
603 level = (spuCtrl >> 10) & 0x0f;
604 level = 0x8000 >> level;
605
07a6dd2c 606 for (; ns < ns_to; ns++)
b1094d0e 607 {
608 dwNoiseCount += 2;
609 if (dwNoiseCount >= level)
610 {
611 dwNoiseCount -= level;
612 shift = (dwNoiseVal >> 10) & 0x1f;
613 bit = (0x69696969 >> shift) & 1;
614 if (dwNoiseVal & 0x8000)
615 bit ^= 1;
616 dwNoiseVal = (dwNoiseVal << 1) | bit;
617 }
618
619 ChanBuf[ns] = (signed short)dwNoiseVal;
620 }
07a6dd2c 621
622 return -1;
623}
624
a80ae4a0 625#ifdef __ARM_ARCH_7A__
b17618c0 626// asm code
627extern void mix_chan(int start, int count, int lv, int rv);
628extern void mix_chan_rvb(int start, int count, int lv, int rv);
629#else
630static void mix_chan(int start, int count, int lv, int rv)
631{
632 int *dst = SSumLR + start * 2;
633 const int *src = ChanBuf + start;
634 int l, r;
635
636 while (count--)
637 {
638 int sval = *src++;
639
640 l = (sval * lv) >> 14;
641 r = (sval * rv) >> 14;
642 *dst++ += l;
643 *dst++ += r;
644 }
645}
646
647static void mix_chan_rvb(int start, int count, int lv, int rv)
648{
649 int *dst = SSumLR + start * 2;
650 int *drvb = sRVBStart + start * 2;
651 const int *src = ChanBuf + start;
652 int l, r;
653
654 while (count--)
655 {
656 int sval = *src++;
657
658 l = (sval * lv) >> 14;
659 r = (sval * rv) >> 14;
660 *dst++ += l;
661 *dst++ += r;
662 *drvb++ += l;
663 *drvb++ += r;
664 }
665}
666#endif
667
ef79bbde
P		 668////////////////////////////////////////////////////////////////////////
669// MAIN SPU FUNCTION
670// here is the main job handler... thread, timer or direct func call
671// basically the whole sound processing is done in this fat func!
672////////////////////////////////////////////////////////////////////////
673
674// 5 ms waiting phase, if buffer is full and no new sound has to get started
675// .. can be made smaller (smallest val: 1 ms), but bigger waits give
676// better performance
677
678#define PAUSE_W 5
679#define PAUSE_L 5000
680
681////////////////////////////////////////////////////////////////////////
682
683static void *MAINThread(void *arg)
684{
9e7a7352 685 int volmult = iVolume;
07a6dd2c 686 int ns,ns_from,ns_to;
174c454a 687 int ch,d,silentch;
ef79bbde
P		 688 int bIRQReturn=0;
689
690 while(!bEndThread) // until we are shutting down
691 {
692 // ok, at the beginning we are looking if there is
693 // enuff free place in the dsound/oss buffer to
694 // fill in new data, or if there is a new channel to start.
695 // if not, we wait (thread) or return (timer/spuasync)
696 // until enuff free place is available/a new channel gets
697 // started
698
699 if(dwNewChannel) // new channel should start immedately?
700 { // (at least one bit 0 ... MAXCHANNEL is set?)
701 iSecureStart++; // -> set iSecure
702 if(iSecureStart>5) iSecureStart=0; // (if it is set 5 times - that means on 5 tries a new samples has been started - in a row, we will reset it, to give the sound update a chance)
703 }
704 else iSecureStart=0; // 0: no new channel should start
705
706 while(!iSecureStart && !bEndThread && // no new start? no thread end?
707 (SoundGetBytesBuffered()>TESTSIZE)) // and still enuff data in sound buffer?
708 {
709 iSecureStart=0; // reset secure
710
711 if(iUseTimer) return 0; // linux no-thread mode? bye
712 usleep(PAUSE_L); // else sleep for x ms (linux)
713
714 if(dwNewChannel) iSecureStart=1; // if a new channel kicks in (or, of course, sound buffer runs low), we will leave the loop
715 }
716
717 //--------------------------------------------------// continue from irq handling in timer mode?
718
8680e822 719 ns_from=0;
720 ns_to=NSSIZE;
721 ch=0;
ef79bbde
P		 722 if(lastch>=0) // will be -1 if no continue is pending
723 {
e11ae5c5 724 ch=lastch; ns_from=lastns; lastch=-1; // -> setup all kind of vars to continue
ef79bbde
P		 725 }
726
174c454a 727 silentch=~(dwChannelOn|dwNewChannel);
728
ef79bbde
P		 729 //--------------------------------------------------//
730 //- main channel loop -//
731 //--------------------------------------------------//
732 {
8680e822 733 for(;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel
ef79bbde 734 {
6d866bb7 735 if(dwNewChannel&(1<<ch)) StartSound(ch); // start new sound
736 if(!(dwChannelOn&(1<<ch))) continue; // channel not playing? next
ef79bbde 737
07a6dd2c 738 if(s_chan[ch].bNoise)
739 d=do_samples_noise(ch, ns_from, ns_to);
740 else if(s_chan[ch].bFMod==2 || (s_chan[ch].bFMod==0 && iUseInterpolation==0))
741 d=do_samples_noint(ch, ns_from, ns_to);
742 else if(s_chan[ch].bFMod==0 && iUseInterpolation==1)
743 d=do_samples_simple(ch, ns_from, ns_to);
744 else
745 d=do_samples_default(ch, ns_from, ns_to);
746 if(d>=0)
ef79bbde 747 {
07a6dd2c 748 bIRQReturn=1;
749 lastch=ch;
750 lastns=ns_to=d;
587fa7de 751 if(d==0)
752 break;
1ab7621a 753 }
ef79bbde 754
1ab7621a 755 MixADSR(ch, ns_from, ns_to);
756
757 if(s_chan[ch].bFMod==2) // fmod freq channel
758 memcpy(iFMod, ChanBuf, sizeof(iFMod));
b17618c0 759 else if(s_chan[ch].bRVBActive)
760 mix_chan_rvb(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
1775933a 761 else
b17618c0 762 mix_chan(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
ef79bbde
P		 763 }
764 }
765
78c60846 766 // advance "stopped" channels that can cause irqs
767 // (all chans are always playing on the real thing..)
768 if(!bIRQReturn && (spuCtrl&CTRL_IRQ))
769 for(ch=0;ch<MAXCHAN;ch++)
770 {
174c454a 771 if(!(silentch&(1<<ch))) continue; // already handled
772 if(dwChannelDead&(1<<ch)) continue;
78c60846 773 if(s_chan[ch].pCurr > pSpuIrq && s_chan[ch].pLoop > pSpuIrq)
774 continue;
775
78c60846 776 s_chan[ch].spos += s_chan[ch].sinc * NSSIZE;
777 while(s_chan[ch].spos >= 28 * 0x10000)
778 {
7e44d49d 779 unsigned char *start = s_chan[ch].pCurr;
78c60846 780
a3ed1915 781 // no need for bIRQReturn since the channel is silent
782 iSpuAsyncWait |= skip_block(ch);
07a6dd2c 783 if(start == s_chan[ch].pCurr)
78c60846 784 {
785 // looping on self
7e44d49d 786 dwChannelDead |= 1<<ch;
787 s_chan[ch].spos = 0;
78c60846 788 break;
789 }
790
78c60846 791 s_chan[ch].spos -= 28 * 0x10000;
792 }
793 }
794
e11ae5c5 795 if(bIRQReturn && iSPUIRQWait) // special return for "spu irq - wait for cpu action"
8680e822 796 {
e11ae5c5 797 iSpuAsyncWait=1;
8680e822 798 bIRQReturn=0;
799 if(iUseTimer!=2)
800 {
801 DWORD dwWatchTime=timeGetTime_spu()+2500;
802
803 while(iSpuAsyncWait && !bEndThread &&
804 timeGetTime_spu()<dwWatchTime)
805 usleep(1000L);
806 continue;
807 }
808 else
809 {
810 return 0;
811 }
812 }
813
814
ef79bbde
P		 815 //---------------------------------------------------//
816 //- here we have another 1 ms of sound data
817 //---------------------------------------------------//
818 // mix XA infos (if any)
819
820 MixXA();
821
822 ///////////////////////////////////////////////////////
823 // mix all channels (including reverb) into one buffer
824
1775933a 825 if(iUseReverb)
826 REVERBDo();
827
828 if((spuCtrl&0x4000)==0) // muted? (rare, don't optimize for this)
829 {
830 memset(pS, 0, NSSIZE * 2 * sizeof(pS[0]));
831 pS += NSSIZE*2;
832 }
833 else
97ea4077 834 for (ns = 0; ns < NSSIZE*2; )
ef79bbde 835 {
9e7a7352 836 d = SSumLR[ns]; SSumLR[ns] = 0;
837 d = d * volmult >> 10;
1775933a 838 ssat32_to_16(d);
ef79bbde 839 *pS++ = d;
97ea4077 840 ns++;
ef79bbde 841
9e7a7352 842 d = SSumLR[ns]; SSumLR[ns] = 0;
843 d = d * volmult >> 10;
1775933a 844 ssat32_to_16(d);
ef79bbde 845 *pS++ = d;
97ea4077 846 ns++;
ef79bbde
P		 847 }
848
849 //////////////////////////////////////////////////////
850 // special irq handling in the decode buffers (0x0000-0x1000)
851 // we know:
852 // the decode buffers are located in spu memory in the following way:
853 // 0x0000-0x03ff CD audio left
854 // 0x0400-0x07ff CD audio right
855 // 0x0800-0x0bff Voice 1
856 // 0x0c00-0x0fff Voice 3
857 // and decoded data is 16 bit for one sample
858 // we assume:
859 // even if voices 1/3 are off or no cd audio is playing, the internal
860 // play positions will move on and wrap after 0x400 bytes.
861 // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
862 // increase this pointer on each sample by 2 bytes. If this pointer
863 // (or 0x400 offsets of this pointer) hits the spuirq address, we generate
864 // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here
865 // in some of Peops timer modes. So: we ignore this option here (for now).
866
3fc2a4c2 867 if(pMixIrq)
ef79bbde
P		 868 {
869 for(ns=0;ns<NSSIZE;ns++)
870 {
871 if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000)
872 {
873 for(ch=0;ch<4;ch++)
874 {
875 if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2)
3fc2a4c2 876 do_irq();
ef79bbde
P		 877 }
878 }
879 pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC;
880 }
881 }
882
883 InitREVERB();
884
885 // feed the sound
886 // wanna have around 1/60 sec (16.666 ms) updates
381ea103 887 if (iCycle++ > 16/FRAG_MSECS)
ef79bbde
P		 888 {
889 SoundFeedStreamData((unsigned char *)pSpuBuffer,
890 ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer));
891 pS = (short *)pSpuBuffer;
892 iCycle = 0;
893 }
894 }
895
896 // end of big main loop...
897
898 bThreadEnded = 1;
899
900 return 0;
901}
902
903// SPU ASYNC... even newer epsxe func
904// 1 time every 'cycle' cycles... harhar
905
906void CALLBACK SPUasync(unsigned long cycle)
907{
908 if(iSpuAsyncWait)
909 {
910 iSpuAsyncWait++;
381ea103 911 if(iSpuAsyncWait<=16/FRAG_MSECS) return;
ef79bbde
P		 912 iSpuAsyncWait=0;
913 }
914
915 if(iUseTimer==2) // special mode, only used in Linux by this spu (or if you enable the experimental Windows mode)
916 {
917 if(!bSpuInit) return; // -> no init, no call
918
919 MAINThread(0); // -> linux high-compat mode
17ed0d69 920
921 // abuse iSpuAsyncWait mechanism to reduce calls to above function
922 // to make it do larger chunks
923 // note: doing it less often than once per frame causes skips
924 iSpuAsyncWait=1;
ef79bbde
P		 925 }
926}
927
928// SPU UPDATE... new epsxe func
929// 1 time every 32 hsync lines
930// (312/32)x50 in pal
931// (262/32)x60 in ntsc
932
933// since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will
934// leave that func in the linux port, until epsxe linux is using
935// the async function as well
936
937void CALLBACK SPUupdate(void)
938{
939 SPUasync(0);
940}
941
942// XA AUDIO
943
944void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap)
945{
946 if(!xap) return;
947 if(!xap->freq) return; // no xa freq ? bye
948
949 FeedXA(xap); // call main XA feeder
950}
951
952// CDDA AUDIO
983a7cfd 953int CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
ef79bbde 954{
983a7cfd 955 if (!pcm) return -1;
956 if (nbytes<=0) return -1;
ef79bbde 957
983a7cfd 958 return FeedCDDA((unsigned char *)pcm, nbytes);
ef79bbde
P		 959}
960
961// SETUPTIMER: init of certain buffers and threads/timers
962void SetupTimer(void)
963{
97ea4077 964 memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers
ef79bbde
P		 965 memset(iFMod,0,NSSIZE*sizeof(int));
966 pS=(short *)pSpuBuffer; // setup soundbuffer pointer
967
968 bEndThread=0; // init thread vars
969 bThreadEnded=0;
970 bSpuInit=1; // flag: we are inited
971
972 if(!iUseTimer) // linux: use thread
973 {
974 pthread_create(&thread, NULL, MAINThread, NULL);
975 }
976}
977
978// REMOVETIMER: kill threads/timers
979void RemoveTimer(void)
980{
981 bEndThread=1; // raise flag to end thread
982
983 if(!iUseTimer) // linux tread?
984 {
985 int i=0;
986 while(!bThreadEnded && i<2000) {usleep(1000L);i++;} // -> wait until thread has ended
987 if(thread!=(pthread_t)-1) {pthread_cancel(thread);thread=(pthread_t)-1;} // -> cancel thread anyway
988 }
989
990 bThreadEnded=0; // no more spu is running
991 bSpuInit=0;
992}
993
994// SETUPSTREAMS: init most of the spu buffers
995void SetupStreams(void)
996{
997 int i;
998
999 pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer
1000
1001 if(iUseReverb==1) i=88200*2;
1002 else i=NSSIZE*2;
1003
1004 sRVBStart = (int *)malloc(i*4); // alloc reverb buffer
1005 memset(sRVBStart,0,i*4);
1006 sRVBEnd = sRVBStart + i;
1007 sRVBPlay = sRVBStart;
1008
1009 XAStart = // alloc xa buffer
1010 (uint32_t *)malloc(44100 * sizeof(uint32_t));
1011 XAEnd = XAStart + 44100;
1012 XAPlay = XAStart;
1013 XAFeed = XAStart;
1014
1015 CDDAStart = // alloc cdda buffer
983a7cfd 1016 (uint32_t *)malloc(CDDA_BUFFER_SIZE);
ef79bbde
P		 1017 CDDAEnd = CDDAStart + 16384;
1018 CDDAPlay = CDDAStart;
b8e744ce 1019 CDDAFeed = CDDAStart;
ef79bbde
P		 1020
1021 for(i=0;i<MAXCHAN;i++) // loop sound channels
1022 {
1023// we don't use mutex sync... not needed, would only
1024// slow us down:
1025// s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL);
6d866bb7 1026 s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain
ef79bbde 1027 s_chan[i].pLoop=spuMemC;
ef79bbde
P		 1028 s_chan[i].pCurr=spuMemC;
1029 }
1030
1031 pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address
1032}
1033
1034// REMOVESTREAMS: free most buffer
1035void RemoveStreams(void)
1036{
1037 free(pSpuBuffer); // free mixing buffer
1038 pSpuBuffer = NULL;
1039 free(sRVBStart); // free reverb buffer
1040 sRVBStart = NULL;
1041 free(XAStart); // free XA buffer
1042 XAStart = NULL;
1043 free(CDDAStart); // free CDDA buffer
1044 CDDAStart = NULL;
1045}
1046
1047// INIT/EXIT STUFF
1048
1049// SPUINIT: this func will be called first by the main emu
1050long CALLBACK SPUinit(void)
1051{
1052 spuMemC = (unsigned char *)spuMem; // just small setup
1053 memset((void *)&rvb, 0, sizeof(REVERBInfo));
1054 InitADSR();
1055
ef79bbde
P		 1056 spuIrq = 0;
1057 spuAddr = 0xffffffff;
1058 bEndThread = 0;
1059 bThreadEnded = 0;
1060 spuMemC = (unsigned char *)spuMem;
1061 pMixIrq = 0;
1062 memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN));
1063 pSpuIrq = 0;
cdb31c95 1064 //iSPUIRQWait = 0;
ef79bbde
P		 1065 lastch = -1;
1066
d7296e10 1067 //ReadConfigSPU(); // read user stuff
ef79bbde
P		 1068 SetupStreams(); // prepare streaming
1069
1070 return 0;
1071}
1072
1073// SPUOPEN: called by main emu after init
1074long CALLBACK SPUopen(void)
1075{
1076 if (bSPUIsOpen) return 0; // security for some stupid main emus
1077
1078 SetupSound(); // setup sound (before init!)
1079 SetupTimer(); // timer for feeding data
1080
1081 bSPUIsOpen = 1;
1082
1083 return PSE_SPU_ERR_SUCCESS;
1084}
1085
1086// SPUCLOSE: called before shutdown
1087long CALLBACK SPUclose(void)
1088{
1089 if (!bSPUIsOpen) return 0; // some security
1090
1091 bSPUIsOpen = 0; // no more open
1092
1093 RemoveTimer(); // no more feeding
1094 RemoveSound(); // no more sound handling
1095
1096 return 0;
1097}
1098
1099// SPUSHUTDOWN: called by main emu on final exit
1100long CALLBACK SPUshutdown(void)
1101{
1102 SPUclose();
1103 RemoveStreams(); // no more streaming
1104
1105 return 0;
1106}
1107
1108// SPUTEST: we don't test, we are always fine ;)
1109long CALLBACK SPUtest(void)
1110{
1111 return 0;
1112}
1113
1114// SPUCONFIGURE: call config dialog
1115long CALLBACK SPUconfigure(void)
1116{
1117#ifdef _MACOSX
1118 DoConfiguration();
1119#else
ee849648 1120// StartCfgTool("CFG");
ef79bbde
P		 1121#endif
1122 return 0;
1123}
1124
1125// SPUABOUT: show about window
1126void CALLBACK SPUabout(void)
1127{
1128#ifdef _MACOSX
1129 DoAbout();
1130#else
ee849648 1131// StartCfgTool("ABOUT");
ef79bbde
P		 1132#endif
1133}
1134
1135// SETUP CALLBACKS
1136// this functions will be called once,
1137// passes a callback that should be called on SPU-IRQ/cdda volume change
1138void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void))
1139{
1140 irqCallback = callback;
1141}
1142
1143void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short))
1144{
1145 cddavCallback = CDDAVcallback;
1146}
1147
1148// COMMON PLUGIN INFO FUNCS
e906c010 1149/*
ef79bbde
P		 1150char * CALLBACK PSEgetLibName(void)
1151{
1152 return _(libraryName);
1153}
1154
1155unsigned long CALLBACK PSEgetLibType(void)
1156{
1157 return PSE_LT_SPU;
1158}
1159
1160unsigned long CALLBACK PSEgetLibVersion(void)
1161{
1162 return (1 << 16) | (6 << 8);
1163}
1164
1165char * SPUgetLibInfos(void)
1166{
1167 return _(libraryInfo);
1168}
e906c010 1169*/
6d866bb7 1170
90f1d26c 1171// debug
174c454a 1172void spu_get_debug_info(int *chans_out, int *run_chans, int *fmod_chans_out, int *noise_chans_out)
90f1d26c 1173{
174c454a 1174 int ch = 0, fmod_chans = 0, noise_chans = 0, irq_chans = 0;
90f1d26c 1175
1176 for(;ch<MAXCHAN;ch++)
1177 {
1178 if (!(dwChannelOn & (1<<ch)))
1179 continue;
1180 if (s_chan[ch].bFMod == 2)
1181 fmod_chans |= 1 << ch;
1182 if (s_chan[ch].bNoise)
1183 noise_chans |= 1 << ch;
174c454a 1184 if((spuCtrl&CTRL_IRQ) && s_chan[ch].pCurr <= pSpuIrq && s_chan[ch].pLoop <= pSpuIrq)
1185 irq_chans |= 1 << ch;
90f1d26c 1186 }
1187
1188 *chans_out = dwChannelOn;
174c454a 1189 *run_chans = ~dwChannelOn & ~dwChannelDead & irq_chans;
90f1d26c 1190 *fmod_chans_out = fmod_chans;
1191 *noise_chans_out = noise_chans;
1192}
1193
6d866bb7 1194// vim:shiftwidth=1:expandtab
ARM optimized PCSX fork