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