misc: Use GCC builtins for byte-swap operations
[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
63a4f6b6 8 Portions (C) GraÅžvydas "notaz" Ignotas, 2010-2012,2014,2015
07a6dd2c 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
de4a0279 21#if !defined(_WIN32) && !defined(NO_OS)
003cfc63 22#include <sys/time.h> // gettimeofday in xa.c
63a4f6b6 23#define THREAD_ENABLED 1
003cfc63 24#endif
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25#include "stdafx.h"
26
27#define _IN_SPU
28
29#include "externals.h"
3fc2a4c2 30#include "registers.h"
07c13dfd 31#include "out.h"
3154bfab 32#include "spu_config.h"
ef79bbde 33
de4a0279 34#ifdef __arm__
35#include "arm_features.h"
36#endif
37
8f2bb0cb 38#ifdef HAVE_ARMV7
1775933a 39 #define ssat32_to_16(v) \
40 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
41#else
42 #define ssat32_to_16(v) do { \
43 if (v < -32768) v = -32768; \
44 else if (v > 32767) v = 32767; \
45 } while (0)
46#endif
47
fb552464 48#define PSXCLK 33868800 /* 33.8688 MHz */
49
650adfd2 50// intended to be ~1 frame
51#define IRQ_NEAR_BLOCKS 32
52
6d866bb7 53/*
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54#if defined (USEMACOSX)
55static char * libraryName = N_("Mac OS X Sound");
56#elif defined (USEALSA)
57static char * libraryName = N_("ALSA Sound");
58#elif defined (USEOSS)
59static char * libraryName = N_("OSS Sound");
60#elif defined (USESDL)
61static char * libraryName = N_("SDL Sound");
62#elif defined (USEPULSEAUDIO)
63static char * libraryName = N_("PulseAudio Sound");
64#else
65static char * libraryName = N_("NULL Sound");
66#endif
67
68static char * libraryInfo = N_("P.E.Op.S. Sound Driver V1.7\nCoded by Pete Bernert and the P.E.Op.S. team\n");
6d866bb7 69*/
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70
71// globals
72
3154bfab 73SPUInfo spu;
74SPUConfig spu_config;
ef79bbde 75
5514a050 76static int iFMod[NSSIZE];
05c7cec7 77static int RVB[NSSIZE * 2];
3154bfab 78int ChanBuf[NSSIZE];
ef79bbde 79
983a7cfd 80#define CDDA_BUFFER_SIZE (16384 * sizeof(uint32_t)) // must be power of 2
81
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82////////////////////////////////////////////////////////////////////////
83// CODE AREA
84////////////////////////////////////////////////////////////////////////
85
86// dirty inline func includes
87
88#include "reverb.c"
89#include "adsr.c"
90
91////////////////////////////////////////////////////////////////////////
92// helpers for simple interpolation
93
94//
95// easy interpolation on upsampling, no special filter, just "Pete's common sense" tm
96//
97// instead of having n equal sample values in a row like:
98// ____
99// |____
100//
101// we compare the current delta change with the next delta change.
102//
103// if curr_delta is positive,
104//
105// - and next delta is smaller (or changing direction):
106// \.
107// -__
108//
109// - and next delta significant (at least twice) bigger:
110// --_
111// \.
112//
113// - and next delta is nearly same:
114// \.
115// \.
116//
117//
118// if curr_delta is negative,
119//
120// - and next delta is smaller (or changing direction):
121// _--
122// /
123//
124// - and next delta significant (at least twice) bigger:
125// /
126// __-
127//
128// - and next delta is nearly same:
129// /
130// /
131//
132
011755d7 133static void InterpolateUp(int *SB, int sinc)
ef79bbde 134{
011755d7 135 if(SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass
ef79bbde 136 {
011755d7 137 const int id1=SB[30]-SB[29]; // curr delta to next val
138 const int id2=SB[31]-SB[30]; // and next delta to next-next val :)
ef79bbde 139
011755d7 140 SB[32]=0;
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141
142 if(id1>0) // curr delta positive
143 {
144 if(id2<id1)
011755d7 145 {SB[28]=id1;SB[32]=2;}
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146 else
147 if(id2<(id1<<1))
011755d7 148 SB[28]=(id1*sinc)>>16;
ef79bbde 149 else
011755d7 150 SB[28]=(id1*sinc)>>17;
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151 }
152 else // curr delta negative
153 {
154 if(id2>id1)
011755d7 155 {SB[28]=id1;SB[32]=2;}
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156 else
157 if(id2>(id1<<1))
011755d7 158 SB[28]=(id1*sinc)>>16;
ef79bbde 159 else
011755d7 160 SB[28]=(id1*sinc)>>17;
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161 }
162 }
163 else
011755d7 164 if(SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass
ef79bbde 165 {
011755d7 166 SB[32]=0;
ef79bbde 167
011755d7 168 SB[28]=(SB[28]*sinc)>>17;
169 //if(sinc<=0x8000)
170 // SB[29]=SB[30]-(SB[28]*((0x10000/sinc)-1));
76d1d09c 171 //else
011755d7 172 SB[29]+=SB[28];
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173 }
174 else // no flags? add bigger val (if possible), calc smaller step, set flag1
011755d7 175 SB[29]+=SB[28];
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176}
177
178//
179// even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm
180//
181
011755d7 182static void InterpolateDown(int *SB, int sinc)
ef79bbde 183{
011755d7 184 if(sinc>=0x20000L) // we would skip at least one val?
ef79bbde 185 {
011755d7 186 SB[29]+=(SB[30]-SB[29])/2; // add easy weight
187 if(sinc>=0x30000L) // we would skip even more vals?
188 SB[29]+=(SB[31]-SB[30])/2; // add additional next weight
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189 }
190}
191
192////////////////////////////////////////////////////////////////////////
193// helpers for gauss interpolation
194
011755d7 195#define gval0 (((short*)(&SB[29]))[gpos&3])
196#define gval(x) ((int)((short*)(&SB[29]))[(gpos+x)&3])
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197
198#include "gauss_i.h"
199
200////////////////////////////////////////////////////////////////////////
201
202#include "xa.c"
203
e4f075af 204static void do_irq(void)
205{
3154bfab 206 //if(!(spu.spuStat & STAT_IRQ))
e4f075af 207 {
3154bfab 208 spu.spuStat |= STAT_IRQ; // asserted status?
209 if(spu.irqCallback) spu.irqCallback();
e4f075af 210 }
211}
212
213static int check_irq(int ch, unsigned char *pos)
214{
3154bfab 215 if((spu.spuCtrl & CTRL_IRQ) && pos == spu.pSpuIrq)
e4f075af 216 {
3154bfab 217 //printf("ch%d irq %04x\n", ch, pos - spu.spuMemC);
e4f075af 218 do_irq();
219 return 1;
220 }
221 return 0;
222}
223
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224////////////////////////////////////////////////////////////////////////
225// START SOUND... called by main thread to setup a new sound on a channel
226////////////////////////////////////////////////////////////////////////
227
3bd31caf 228static void StartSoundSB(int *SB)
ef79bbde 229{
de4a0279 230 SB[26]=0; // init mixing vars
231 SB[27]=0;
ef79bbde 232
de4a0279 233 SB[28]=0;
234 SB[29]=0; // init our interpolation helpers
235 SB[30]=0;
236 SB[31]=0;
3bd31caf 237}
238
239static void StartSoundMain(int ch)
240{
241 SPUCHAN *s_chan = &spu.s_chan[ch];
242
243 StartADSR(ch);
244 StartREVERB(ch);
245
246 s_chan->prevflags=2;
247 s_chan->iSBPos=27;
5514a050 248 s_chan->spos=0;
ef79bbde 249
9601ca6d 250 s_chan->pCurr = spu.spuMemC+((regAreaGet(ch,6)&~1)<<3);
251
3154bfab 252 spu.dwNewChannel&=~(1<<ch); // clear new channel bit
4ccd0fb2 253 spu.dwChannelOn|=1<<ch;
254 spu.dwChannelDead&=~(1<<ch);
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255}
256
3bd31caf 257static void StartSound(int ch)
258{
259 StartSoundMain(ch);
260 StartSoundSB(spu.SB + ch * SB_SIZE);
261}
262
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263////////////////////////////////////////////////////////////////////////
264// ALL KIND OF HELPERS
265////////////////////////////////////////////////////////////////////////
266
011755d7 267INLINE int FModChangeFrequency(int *SB, int pitch, int ns)
ef79bbde 268{
011755d7 269 unsigned int NP=pitch;
07a6dd2c 270 int sinc;
ef79bbde 271
011755d7 272 NP=((32768L+iFMod[ns])*NP)>>15;
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273
274 if(NP>0x3fff) NP=0x3fff;
275 if(NP<0x1) NP=0x1;
276
7e44d49d 277 sinc=NP<<4; // calc frequency
3154bfab 278 if(spu_config.iUseInterpolation==1) // freq change in simple interpolation mode
011755d7 279 SB[32]=1;
ef79bbde 280 iFMod[ns]=0;
07a6dd2c 281
282 return sinc;
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283}
284
285////////////////////////////////////////////////////////////////////////
286
011755d7 287INLINE void StoreInterpolationVal(int *SB, int sinc, int fa, int fmod_freq)
ef79bbde 288{
011755d7 289 if(fmod_freq) // fmod freq channel
290 SB[29]=fa;
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291 else
292 {
381ea103 293 ssat32_to_16(fa);
ef79bbde 294
3154bfab 295 if(spu_config.iUseInterpolation>=2) // gauss/cubic interpolation
011755d7 296 {
297 int gpos = SB[28];
298 gval0 = fa;
ef79bbde 299 gpos = (gpos+1) & 3;
011755d7 300 SB[28] = gpos;
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301 }
302 else
3154bfab 303 if(spu_config.iUseInterpolation==1) // simple interpolation
ef79bbde 304 {
011755d7 305 SB[28] = 0;
306 SB[29] = 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'
307 SB[30] = SB[31];
308 SB[31] = fa;
309 SB[32] = 1; // -> flag: calc new interolation
ef79bbde 310 }
011755d7 311 else SB[29]=fa; // no interpolation
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312 }
313}
314
315////////////////////////////////////////////////////////////////////////
316
011755d7 317INLINE int iGetInterpolationVal(int *SB, int sinc, int spos, int fmod_freq)
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318{
319 int fa;
320
011755d7 321 if(fmod_freq) return SB[29];
ef79bbde 322
3154bfab 323 switch(spu_config.iUseInterpolation)
011755d7 324 {
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325 //--------------------------------------------------//
326 case 3: // cubic interpolation
327 {
328 long xd;int gpos;
8cd23d6d 329 xd = (spos >> 1)+1;
011755d7 330 gpos = SB[28];
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331
332 fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0;
333 fa *= (xd - (2<<15)) / 6;
334 fa >>= 15;
335 fa += gval(2) - gval(1) - gval(1) + gval0;
336 fa *= (xd - (1<<15)) >> 1;
337 fa >>= 15;
338 fa += gval(1) - gval0;
339 fa *= xd;
340 fa >>= 15;
341 fa = fa + gval0;
342
343 } break;
344 //--------------------------------------------------//
345 case 2: // gauss interpolation
346 {
347 int vl, vr;int gpos;
8cd23d6d 348 vl = (spos >> 6) & ~3;
011755d7 349 gpos = SB[28];
63646208
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350 vr=(gauss[vl]*(int)gval0) >> 15;
351 vr+=(gauss[vl+1]*gval(1)) >> 15;
352 vr+=(gauss[vl+2]*gval(2)) >> 15;
353 vr+=(gauss[vl+3]*gval(3)) >> 15;
354 fa = vr;
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355 } break;
356 //--------------------------------------------------//
357 case 1: // simple interpolation
358 {
011755d7 359 if(sinc<0x10000L) // -> upsampling?
360 InterpolateUp(SB, sinc); // --> interpolate up
361 else InterpolateDown(SB, sinc); // --> else down
362 fa=SB[29];
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363 } break;
364 //--------------------------------------------------//
365 default: // no interpolation
366 {
011755d7 367 fa=SB[29];
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368 } break;
369 //--------------------------------------------------//
370 }
371
372 return fa;
373}
374
381ea103 375static void decode_block_data(int *dest, const unsigned char *src, int predict_nr, int shift_factor)
376{
5514a050 377 static const int f[16][2] = {
378 { 0, 0 },
379 { 60, 0 },
380 { 115, -52 },
381 { 98, -55 },
382 { 122, -60 }
383 };
381ea103 384 int nSample;
385 int fa, s_1, s_2, d, s;
386
387 s_1 = dest[27];
388 s_2 = dest[26];
389
390 for (nSample = 0; nSample < 28; src++)
391 {
392 d = (int)*src;
393 s = (int)(signed short)((d & 0x0f) << 12);
394
395 fa = s >> shift_factor;
396 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
397 s_2=s_1;s_1=fa;
398
399 dest[nSample++] = fa;
400
401 s = (int)(signed short)((d & 0xf0) << 8);
402 fa = s >> shift_factor;
403 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
404 s_2=s_1;s_1=fa;
405
406 dest[nSample++] = fa;
407 }
408}
409
3bd31caf 410static int decode_block(void *unused, int ch, int *SB)
e11ae5c5 411{
5514a050 412 SPUCHAN *s_chan = &spu.s_chan[ch];
e11ae5c5 413 unsigned char *start;
215ff9e6 414 int predict_nr, shift_factor, flags;
e11ae5c5 415 int ret = 0;
416
5514a050 417 start = s_chan->pCurr; // set up the current pos
215ff9e6 418 if (start == spu.spuMemC) // ?
419 ret = 1;
e11ae5c5 420
5514a050 421 if (s_chan->prevflags & 1) // 1: stop/loop
3fc2a4c2 422 {
5514a050 423 if (!(s_chan->prevflags & 2))
215ff9e6 424 ret = 1;
e4f075af 425
5514a050 426 start = s_chan->pLoop;
3fc2a4c2 427 }
89cb2058 428 else
215ff9e6 429 check_irq(ch, start); // hack, see check_irq below..
e11ae5c5 430
5514a050 431 predict_nr = start[0];
215ff9e6 432 shift_factor = predict_nr & 0xf;
e11ae5c5 433 predict_nr >>= 4;
e11ae5c5 434
011755d7 435 decode_block_data(SB, start + 2, predict_nr, shift_factor);
e11ae5c5 436
215ff9e6 437 flags = start[1];
9601ca6d 438 if (flags & 4 && (!s_chan->bIgnoreLoop))
5514a050 439 s_chan->pLoop = start; // loop adress
e11ae5c5 440
215ff9e6 441 start += 16;
3fc2a4c2 442
215ff9e6 443 if (flags & 1) { // 1: stop/loop
5514a050 444 start = s_chan->pLoop;
215ff9e6 445 check_irq(ch, start); // hack.. :(
89cb2058 446 }
e11ae5c5 447
3154bfab 448 if (start - spu.spuMemC >= 0x80000)
449 start = spu.spuMemC;
e4f075af 450
5514a050 451 s_chan->pCurr = start; // store values for next cycle
452 s_chan->prevflags = flags;
e11ae5c5 453
454 return ret;
455}
456
07a6dd2c 457// do block, but ignore sample data
458static int skip_block(int ch)
459{
5514a050 460 SPUCHAN *s_chan = &spu.s_chan[ch];
461 unsigned char *start = s_chan->pCurr;
215ff9e6 462 int flags;
463 int ret = 0;
464
5514a050 465 if (s_chan->prevflags & 1) {
466 if (!(s_chan->prevflags & 2))
215ff9e6 467 ret = 1;
07a6dd2c 468
5514a050 469 start = s_chan->pLoop;
215ff9e6 470 }
471 else
472 check_irq(ch, start);
07a6dd2c 473
215ff9e6 474 flags = start[1];
475 if (flags & 4)
5514a050 476 s_chan->pLoop = start;
07a6dd2c 477
e4f075af 478 start += 16;
07a6dd2c 479
215ff9e6 480 if (flags & 1) {
5514a050 481 start = s_chan->pLoop;
215ff9e6 482 check_irq(ch, start);
483 }
07a6dd2c 484
5514a050 485 s_chan->pCurr = start;
486 s_chan->prevflags = flags;
e4f075af 487
89cb2058 488 return ret;
07a6dd2c 489}
490
650adfd2 491// if irq is going to trigger sooner than in upd_samples, set upd_samples
492static void scan_for_irq(int ch, unsigned int *upd_samples)
493{
5514a050 494 SPUCHAN *s_chan = &spu.s_chan[ch];
650adfd2 495 int pos, sinc, sinc_inv, end;
496 unsigned char *block;
497 int flags;
498
5514a050 499 block = s_chan->pCurr;
500 pos = s_chan->spos;
501 sinc = s_chan->sinc;
650adfd2 502 end = pos + *upd_samples * sinc;
503
5514a050 504 pos += (28 - s_chan->iSBPos) << 16;
650adfd2 505 while (pos < end)
506 {
3154bfab 507 if (block == spu.pSpuIrq)
650adfd2 508 break;
509 flags = block[1];
510 block += 16;
511 if (flags & 1) { // 1: stop/loop
5514a050 512 block = s_chan->pLoop;
3154bfab 513 if (block == spu.pSpuIrq) // hack.. (see decode_block)
650adfd2 514 break;
515 }
516 pos += 28 << 16;
517 }
518
519 if (pos < end)
520 {
5514a050 521 sinc_inv = s_chan->sinc_inv;
650adfd2 522 if (sinc_inv == 0)
5514a050 523 sinc_inv = s_chan->sinc_inv = (0x80000000u / (uint32_t)sinc) << 1;
650adfd2 524
5514a050 525 pos -= s_chan->spos;
650adfd2 526 *upd_samples = (((uint64_t)pos * sinc_inv) >> 32) + 1;
527 //xprintf("ch%02d: irq sched: %3d %03d\n",
528 // ch, *upd_samples, *upd_samples * 60 * 263 / 44100);
529 }
530}
531
07a6dd2c 532#define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
3bd31caf 533static noinline int do_samples_##name( \
534 int (*decode_f)(void *context, int ch, int *SB), void *ctx, \
535 int ch, int ns_to, int *SB, int sinc, int *spos, int *sbpos) \
07a6dd2c 536{ \
215ff9e6 537 int ns, d, fa; \
538 int ret = ns_to; \
07a6dd2c 539 interp_start; \
540 \
215ff9e6 541 for (ns = 0; ns < ns_to; ns++) \
07a6dd2c 542 { \
543 fmod_code; \
544 \
63a4f6b6 545 *spos += sinc; \
546 while (*spos >= 0x10000) \
07a6dd2c 547 { \
63a4f6b6 548 fa = SB[(*sbpos)++]; \
549 if (*sbpos >= 28) \
07a6dd2c 550 { \
63a4f6b6 551 *sbpos = 0; \
3bd31caf 552 d = decode_f(ctx, ch, SB); \
215ff9e6 553 if (d && ns < ret) \
554 ret = ns; \
07a6dd2c 555 } \
556 \
07a6dd2c 557 interp1_code; \
63a4f6b6 558 *spos -= 0x10000; \
07a6dd2c 559 } \
560 \
561 interp2_code; \
07a6dd2c 562 } \
563 \
07a6dd2c 564 interp_end; \
565 \
566 return ret; \
567}
568
569#define fmod_recv_check \
5514a050 570 if(spu.s_chan[ch].bFMod==1 && iFMod[ns]) \
571 sinc = FModChangeFrequency(SB, spu.s_chan[ch].iRawPitch, ns)
07a6dd2c 572
573make_do_samples(default, fmod_recv_check, ,
5514a050 574 StoreInterpolationVal(SB, sinc, fa, spu.s_chan[ch].bFMod==2),
575 ChanBuf[ns] = iGetInterpolationVal(SB, sinc, *spos, spu.s_chan[ch].bFMod==2), )
011755d7 576make_do_samples(noint, , fa = SB[29], , ChanBuf[ns] = fa, SB[29] = fa)
07a6dd2c 577
578#define simple_interp_store \
215ff9e6 579 SB[28] = 0; \
580 SB[29] = SB[30]; \
581 SB[30] = SB[31]; \
582 SB[31] = fa; \
583 SB[32] = 1
07a6dd2c 584
585#define simple_interp_get \
011755d7 586 if(sinc<0x10000) /* -> upsampling? */ \
587 InterpolateUp(SB, sinc); /* --> interpolate up */ \
588 else InterpolateDown(SB, sinc); /* --> else down */ \
589 ChanBuf[ns] = SB[29]
07a6dd2c 590
591make_do_samples(simple, , ,
592 simple_interp_store, simple_interp_get, )
593
215ff9e6 594static int do_samples_skip(int ch, int ns_to)
07a6dd2c 595{
5514a050 596 SPUCHAN *s_chan = &spu.s_chan[ch];
8f5f2dd5 597 int spos = s_chan->spos;
598 int sinc = s_chan->sinc;
215ff9e6 599 int ret = ns_to, ns, d;
b1094d0e 600
8f5f2dd5 601 spos += s_chan->iSBPos << 16;
215ff9e6 602
603 for (ns = 0; ns < ns_to; ns++)
07a6dd2c 604 {
8f5f2dd5 605 spos += sinc;
606 while (spos >= 28*0x10000)
215ff9e6 607 {
608 d = skip_block(ch);
609 if (d && ns < ret)
610 ret = ns;
8f5f2dd5 611 spos -= 28*0x10000;
215ff9e6 612 }
07a6dd2c 613 }
614
8f5f2dd5 615 s_chan->iSBPos = spos >> 16;
616 s_chan->spos = spos & 0xffff;
215ff9e6 617
618 return ret;
619}
620
621static void do_lsfr_samples(int ns_to, int ctrl,
622 unsigned int *dwNoiseCount, unsigned int *dwNoiseVal)
623{
624 unsigned int counter = *dwNoiseCount;
625 unsigned int val = *dwNoiseVal;
626 unsigned int level, shift, bit;
627 int ns;
628
b1094d0e 629 // modified from DrHell/shalma, no fraction
215ff9e6 630 level = (ctrl >> 10) & 0x0f;
b1094d0e 631 level = 0x8000 >> level;
632
215ff9e6 633 for (ns = 0; ns < ns_to; ns++)
b1094d0e 634 {
215ff9e6 635 counter += 2;
636 if (counter >= level)
b1094d0e 637 {
215ff9e6 638 counter -= level;
639 shift = (val >> 10) & 0x1f;
b1094d0e 640 bit = (0x69696969 >> shift) & 1;
215ff9e6 641 bit ^= (val >> 15) & 1;
642 val = (val << 1) | bit;
b1094d0e 643 }
644
215ff9e6 645 ChanBuf[ns] = (signed short)val;
b1094d0e 646 }
07a6dd2c 647
215ff9e6 648 *dwNoiseCount = counter;
649 *dwNoiseVal = val;
650}
651
652static int do_samples_noise(int ch, int ns_to)
653{
654 int ret;
655
656 ret = do_samples_skip(ch, ns_to);
657
658 do_lsfr_samples(ns_to, spu.spuCtrl, &spu.dwNoiseCount, &spu.dwNoiseVal);
659
89cb2058 660 return ret;
07a6dd2c 661}
662
665f33e1 663#ifdef HAVE_ARMV5
3a721c1f 664// asm code; lv and rv must be 0-3fff
3bd31caf 665extern void mix_chan(int *SSumLR, int count, int lv, int rv);
666extern void mix_chan_rvb(int *SSumLR, int count, int lv, int rv, int *rvb);
b17618c0 667#else
3bd31caf 668static void mix_chan(int *SSumLR, int count, int lv, int rv)
b17618c0 669{
3bd31caf 670 const int *src = ChanBuf;
b17618c0 671 int l, r;
672
673 while (count--)
674 {
675 int sval = *src++;
676
677 l = (sval * lv) >> 14;
678 r = (sval * rv) >> 14;
3bd31caf 679 *SSumLR++ += l;
680 *SSumLR++ += r;
b17618c0 681 }
682}
683
3bd31caf 684static void mix_chan_rvb(int *SSumLR, int count, int lv, int rv, int *rvb)
b17618c0 685{
3bd31caf 686 const int *src = ChanBuf;
687 int *dst = SSumLR;
688 int *drvb = rvb;
b17618c0 689 int l, r;
690
691 while (count--)
692 {
693 int sval = *src++;
694
695 l = (sval * lv) >> 14;
696 r = (sval * rv) >> 14;
697 *dst++ += l;
698 *dst++ += r;
699 *drvb++ += l;
700 *drvb++ += r;
701 }
702}
703#endif
704
b72f17a1 705// 0x0800-0x0bff Voice 1
706// 0x0c00-0x0fff Voice 3
215ff9e6 707static noinline void do_decode_bufs(unsigned short *mem, int which,
708 int count, int decode_pos)
b72f17a1 709{
215ff9e6 710 unsigned short *dst = &mem[0x800/2 + which*0x400/2];
711 const int *src = ChanBuf;
712 int cursor = decode_pos;
b72f17a1 713
714 while (count-- > 0)
715 {
ee9afdbd 716 cursor &= 0x1ff;
b72f17a1 717 dst[cursor] = *src++;
ee9afdbd 718 cursor++;
b72f17a1 719 }
720
721 // decode_pos is updated and irqs are checked later, after voice loop
722}
723
215ff9e6 724static void do_silent_chans(int ns_to, int silentch)
725{
5514a050 726 unsigned int mask;
727 SPUCHAN *s_chan;
215ff9e6 728 int ch;
729
5514a050 730 mask = silentch & 0xffffff;
731 for (ch = 0; mask != 0; ch++, mask >>= 1)
215ff9e6 732 {
5514a050 733 if (!(mask & 1)) continue;
215ff9e6 734 if (spu.dwChannelDead & (1<<ch)) continue;
5514a050 735
736 s_chan = &spu.s_chan[ch];
737 if (s_chan->pCurr > spu.pSpuIrq && s_chan->pLoop > spu.pSpuIrq)
215ff9e6 738 continue;
739
5514a050 740 s_chan->spos += s_chan->iSBPos << 16;
741 s_chan->iSBPos = 0;
215ff9e6 742
5514a050 743 s_chan->spos += s_chan->sinc * ns_to;
744 while (s_chan->spos >= 28 * 0x10000)
215ff9e6 745 {
5514a050 746 unsigned char *start = s_chan->pCurr;
215ff9e6 747
748 skip_block(ch);
5514a050 749 if (start == s_chan->pCurr || start - spu.spuMemC < 0x1000)
215ff9e6 750 {
751 // looping on self or stopped(?)
752 spu.dwChannelDead |= 1<<ch;
5514a050 753 s_chan->spos = 0;
215ff9e6 754 break;
755 }
756
5514a050 757 s_chan->spos -= 28 * 0x10000;
215ff9e6 758 }
759 }
760}
761
762static void do_channels(int ns_to)
763{
764 unsigned int mask;
05c7cec7 765 int do_rvb, ch, d;
5514a050 766 SPUCHAN *s_chan;
63a4f6b6 767 int *SB, sinc;
215ff9e6 768
05c7cec7 769 do_rvb = spu.rvb->StartAddr && spu_config.iUseReverb;
770 if (do_rvb)
771 memset(RVB, 0, ns_to * sizeof(RVB[0]) * 2);
3bd31caf 772
773 mask = spu.dwNewChannel & 0xffffff;
774 for (ch = 0; mask != 0; ch++, mask >>= 1) {
775 if (mask & 1)
776 StartSound(ch);
777 }
215ff9e6 778
779 mask = spu.dwChannelOn & 0xffffff;
780 for (ch = 0; mask != 0; ch++, mask >>= 1) // loop em all...
781 {
782 if (!(mask & 1)) continue; // channel not playing? next
783
5514a050 784 s_chan = &spu.s_chan[ch];
de4a0279 785 SB = spu.SB + ch * SB_SIZE;
5514a050 786 sinc = s_chan->sinc;
63a4f6b6 787
5514a050 788 if (s_chan->bNoise)
215ff9e6 789 d = do_samples_noise(ch, ns_to);
5514a050 790 else if (s_chan->bFMod == 2
791 || (s_chan->bFMod == 0 && spu_config.iUseInterpolation == 0))
3bd31caf 792 d = do_samples_noint(decode_block, NULL, ch, ns_to,
5514a050 793 SB, sinc, &s_chan->spos, &s_chan->iSBPos);
794 else if (s_chan->bFMod == 0 && spu_config.iUseInterpolation == 1)
3bd31caf 795 d = do_samples_simple(decode_block, NULL, ch, ns_to,
5514a050 796 SB, sinc, &s_chan->spos, &s_chan->iSBPos);
215ff9e6 797 else
3bd31caf 798 d = do_samples_default(decode_block, NULL, ch, ns_to,
5514a050 799 SB, sinc, &s_chan->spos, &s_chan->iSBPos);
215ff9e6 800
5514a050 801 d = MixADSR(&s_chan->ADSRX, d);
215ff9e6 802 if (d < ns_to) {
803 spu.dwChannelOn &= ~(1 << ch);
5514a050 804 s_chan->ADSRX.EnvelopeVol = 0;
215ff9e6 805 memset(&ChanBuf[d], 0, (ns_to - d) * sizeof(ChanBuf[0]));
806 }
807
808 if (ch == 1 || ch == 3)
809 {
810 do_decode_bufs(spu.spuMem, ch/2, ns_to, spu.decode_pos);
811 spu.decode_dirty_ch |= 1 << ch;
812 }
813
5514a050 814 if (s_chan->bFMod == 2) // fmod freq channel
215ff9e6 815 memcpy(iFMod, &ChanBuf, ns_to * sizeof(iFMod[0]));
05c7cec7 816 if (s_chan->bRVBActive && do_rvb)
817 mix_chan_rvb(spu.SSumLR, ns_to, s_chan->iLeftVolume, s_chan->iRightVolume, RVB);
215ff9e6 818 else
3bd31caf 819 mix_chan(spu.SSumLR, ns_to, s_chan->iLeftVolume, s_chan->iRightVolume);
215ff9e6 820 }
05c7cec7 821
822 if (spu.rvb->StartAddr) {
7b2c4897 823 if (do_rvb)
05c7cec7 824 REVERBDo(spu.SSumLR, RVB, ns_to, spu.rvb->CurrAddr);
05c7cec7 825
826 spu.rvb->CurrAddr += ns_to / 2;
827 while (spu.rvb->CurrAddr >= 0x40000)
828 spu.rvb->CurrAddr -= 0x40000 - spu.rvb->StartAddr;
829 }
215ff9e6 830}
831
05c7cec7 832static void do_samples_finish(int *SSumLR, int ns_to,
3bd31caf 833 int silentch, int decode_pos);
63a4f6b6 834
835// optional worker thread handling
836
de4a0279 837#if defined(THREAD_ENABLED) || defined(WANT_THREAD_CODE)
63a4f6b6 838
3bd31caf 839// worker thread state
840static struct spu_worker {
841 union {
842 struct {
843 unsigned int exit_thread;
844 unsigned int i_ready;
845 unsigned int i_reaped;
05c7cec7 846 unsigned int last_boot_cnt; // dsp
0c1151fe 847 unsigned int ram_dirty;
3bd31caf 848 };
849 // aligning for C64X_DSP
850 unsigned int _pad0[128/4];
851 };
852 union {
853 struct {
854 unsigned int i_done;
855 unsigned int active; // dsp
856 unsigned int boot_cnt;
857 };
858 unsigned int _pad1[128/4];
859 };
860 struct work_item {
861 int ns_to;
862 int ctrl;
863 int decode_pos;
05c7cec7 864 int rvb_addr;
3bd31caf 865 unsigned int channels_new;
866 unsigned int channels_on;
867 unsigned int channels_silent;
868 struct {
869 int spos;
870 int sbpos;
871 int sinc;
872 int start;
873 int loop;
874 int ns_to;
05c7cec7 875 short vol_l;
876 short vol_r;
3bd31caf 877 ADSRInfoEx adsr;
05c7cec7 878 // might also want to add fmod flags..
3bd31caf 879 } ch[24];
3bd31caf 880 int SSumLR[NSSIZE * 2];
881 } i[4];
882} *worker;
883
884#define WORK_MAXCNT (sizeof(worker->i) / sizeof(worker->i[0]))
885#define WORK_I_MASK (WORK_MAXCNT - 1)
886
5514a050 887static void thread_work_start(void);
3bd31caf 888static void thread_work_wait_sync(struct work_item *work, int force);
05c7cec7 889static void thread_sync_caches(void);
3bd31caf 890static int thread_get_i_done(void);
891
892static int decode_block_work(void *context, int ch, int *SB)
893{
894 const unsigned char *ram = spu.spuMemC;
895 int predict_nr, shift_factor, flags;
896 struct work_item *work = context;
897 int start = work->ch[ch].start;
898 int loop = work->ch[ch].loop;
899
900 predict_nr = ram[start];
901 shift_factor = predict_nr & 0xf;
902 predict_nr >>= 4;
903
904 decode_block_data(SB, ram + start + 2, predict_nr, shift_factor);
905
906 flags = ram[start + 1];
907 if (flags & 4)
908 loop = start; // loop adress
909
910 start += 16;
911
912 if (flags & 1) // 1: stop/loop
913 start = loop;
914
915 work->ch[ch].start = start & 0x7ffff;
916 work->ch[ch].loop = loop;
917
918 return 0;
919}
5514a050 920
3bd31caf 921static void queue_channel_work(int ns_to, unsigned int silentch)
63a4f6b6 922{
3bd31caf 923 struct work_item *work;
924 SPUCHAN *s_chan;
63a4f6b6 925 unsigned int mask;
3bd31caf 926 int ch, d;
63a4f6b6 927
3bd31caf 928 work = &worker->i[worker->i_ready & WORK_I_MASK];
929 work->ns_to = ns_to;
930 work->ctrl = spu.spuCtrl;
931 work->decode_pos = spu.decode_pos;
932 work->channels_silent = silentch;
933
934 mask = work->channels_new = spu.dwNewChannel & 0xffffff;
935 for (ch = 0; mask != 0; ch++, mask >>= 1) {
936 if (mask & 1)
937 StartSoundMain(ch);
938 }
939
940 mask = work->channels_on = spu.dwChannelOn & 0xffffff;
941 spu.decode_dirty_ch |= mask & 0x0a;
63a4f6b6 942
63a4f6b6 943 for (ch = 0; mask != 0; ch++, mask >>= 1)
944 {
945 if (!(mask & 1)) continue;
946
5514a050 947 s_chan = &spu.s_chan[ch];
3bd31caf 948 work->ch[ch].spos = s_chan->spos;
949 work->ch[ch].sbpos = s_chan->iSBPos;
950 work->ch[ch].sinc = s_chan->sinc;
951 work->ch[ch].adsr = s_chan->ADSRX;
05c7cec7 952 work->ch[ch].vol_l = s_chan->iLeftVolume;
953 work->ch[ch].vol_r = s_chan->iRightVolume;
3bd31caf 954 work->ch[ch].start = s_chan->pCurr - spu.spuMemC;
955 work->ch[ch].loop = s_chan->pLoop - spu.spuMemC;
5514a050 956 if (s_chan->prevflags & 1)
3bd31caf 957 work->ch[ch].start = work->ch[ch].loop;
63a4f6b6 958
3bd31caf 959 d = do_samples_skip(ch, ns_to);
960 work->ch[ch].ns_to = d;
961
962 // note: d is not accurate on skip
963 d = SkipADSR(&s_chan->ADSRX, d);
964 if (d < ns_to) {
965 spu.dwChannelOn &= ~(1 << ch);
966 s_chan->ADSRX.EnvelopeVol = 0;
967 }
63a4f6b6 968 }
969
05c7cec7 970 work->rvb_addr = 0;
971 if (spu.rvb->StartAddr) {
7b2c4897 972 if (spu_config.iUseReverb)
05c7cec7 973 work->rvb_addr = spu.rvb->CurrAddr;
05c7cec7 974
975 spu.rvb->CurrAddr += ns_to / 2;
976 while (spu.rvb->CurrAddr >= 0x40000)
977 spu.rvb->CurrAddr -= 0x40000 - spu.rvb->StartAddr;
978 }
979
3bd31caf 980 worker->i_ready++;
5514a050 981 thread_work_start();
63a4f6b6 982}
983
3bd31caf 984static void do_channel_work(struct work_item *work)
63a4f6b6 985{
3bd31caf 986 unsigned int mask;
63a4f6b6 987 unsigned int decode_dirty_ch = 0;
7b2c4897 988 const SPUCHAN *s_chan;
63a4f6b6 989 int *SB, sinc, spos, sbpos;
990 int d, ch, ns_to;
991
3bd31caf 992 ns_to = work->ns_to;
05c7cec7 993
994 if (work->rvb_addr)
995 memset(RVB, 0, ns_to * sizeof(RVB[0]) * 2);
63a4f6b6 996
3bd31caf 997 mask = work->channels_new;
998 for (ch = 0; mask != 0; ch++, mask >>= 1) {
999 if (mask & 1)
1000 StartSoundSB(spu.SB + ch * SB_SIZE);
1001 }
1002
1003 mask = work->channels_on;
63a4f6b6 1004 for (ch = 0; mask != 0; ch++, mask >>= 1)
1005 {
1006 if (!(mask & 1)) continue;
1007
3bd31caf 1008 d = work->ch[ch].ns_to;
1009 spos = work->ch[ch].spos;
1010 sbpos = work->ch[ch].sbpos;
1011 sinc = work->ch[ch].sinc;
63a4f6b6 1012
5514a050 1013 s_chan = &spu.s_chan[ch];
de4a0279 1014 SB = spu.SB + ch * SB_SIZE;
5514a050 1015
1016 if (s_chan->bNoise)
3bd31caf 1017 do_lsfr_samples(d, work->ctrl, &spu.dwNoiseCount, &spu.dwNoiseVal);
5514a050 1018 else if (s_chan->bFMod == 2
1019 || (s_chan->bFMod == 0 && spu_config.iUseInterpolation == 0))
3bd31caf 1020 do_samples_noint(decode_block_work, work, ch, d, SB, sinc, &spos, &sbpos);
5514a050 1021 else if (s_chan->bFMod == 0 && spu_config.iUseInterpolation == 1)
3bd31caf 1022 do_samples_simple(decode_block_work, work, ch, d, SB, sinc, &spos, &sbpos);
63a4f6b6 1023 else
3bd31caf 1024 do_samples_default(decode_block_work, work, ch, d, SB, sinc, &spos, &sbpos);
63a4f6b6 1025
3bd31caf 1026 d = MixADSR(&work->ch[ch].adsr, d);
63a4f6b6 1027 if (d < ns_to) {
3bd31caf 1028 work->ch[ch].adsr.EnvelopeVol = 0;
63a4f6b6 1029 memset(&ChanBuf[d], 0, (ns_to - d) * sizeof(ChanBuf[0]));
1030 }
1031
1032 if (ch == 1 || ch == 3)
1033 {
3bd31caf 1034 do_decode_bufs(spu.spuMem, ch/2, ns_to, work->decode_pos);
63a4f6b6 1035 decode_dirty_ch |= 1 << ch;
1036 }
1037
5514a050 1038 if (s_chan->bFMod == 2) // fmod freq channel
63a4f6b6 1039 memcpy(iFMod, &ChanBuf, ns_to * sizeof(iFMod[0]));
05c7cec7 1040 if (s_chan->bRVBActive && work->rvb_addr)
3bd31caf 1041 mix_chan_rvb(work->SSumLR, ns_to,
05c7cec7 1042 work->ch[ch].vol_l, work->ch[ch].vol_r, RVB);
63a4f6b6 1043 else
05c7cec7 1044 mix_chan(work->SSumLR, ns_to, work->ch[ch].vol_l, work->ch[ch].vol_r);
63a4f6b6 1045 }
05c7cec7 1046
1047 if (work->rvb_addr)
1048 REVERBDo(work->SSumLR, RVB, ns_to, work->rvb_addr);
63a4f6b6 1049}
1050
3bd31caf 1051static void sync_worker_thread(int force)
63a4f6b6 1052{
3bd31caf 1053 struct work_item *work;
1054 int done, used_space;
63a4f6b6 1055
7b2c4897 1056 // rvb offsets will change, thread may be using them
1057 force |= spu.rvb->dirty && spu.rvb->StartAddr;
1058
3bd31caf 1059 done = thread_get_i_done() - worker->i_reaped;
1060 used_space = worker->i_ready - worker->i_reaped;
0c1151fe 1061
3bd31caf 1062 //printf("done: %d use: %d dsp: %u/%u\n", done, used_space,
1063 // worker->boot_cnt, worker->i_done);
63a4f6b6 1064
3bd31caf 1065 while ((force && used_space > 0) || used_space >= WORK_MAXCNT || done > 0) {
1066 work = &worker->i[worker->i_reaped & WORK_I_MASK];
1067 thread_work_wait_sync(work, force);
63a4f6b6 1068
05c7cec7 1069 do_samples_finish(work->SSumLR, work->ns_to,
3bd31caf 1070 work->channels_silent, work->decode_pos);
63a4f6b6 1071
3bd31caf 1072 worker->i_reaped++;
1073 done = thread_get_i_done() - worker->i_reaped;
1074 used_space = worker->i_ready - worker->i_reaped;
63a4f6b6 1075 }
05c7cec7 1076 if (force)
1077 thread_sync_caches();
63a4f6b6 1078}
1079
1080#else
1081
1082static void queue_channel_work(int ns_to, int silentch) {}
3bd31caf 1083static void sync_worker_thread(int force) {}
1084
1085static const void * const worker = NULL;
63a4f6b6 1086
1087#endif // THREAD_ENABLED
1088
ef79bbde
P
1089////////////////////////////////////////////////////////////////////////
1090// MAIN SPU FUNCTION
6d75977b 1091// here is the main job handler...
ef79bbde
P
1092////////////////////////////////////////////////////////////////////////
1093
de4a0279 1094void do_samples(unsigned int cycles_to, int do_direct)
ef79bbde 1095{
3bd31caf 1096 unsigned int silentch;
650adfd2 1097 int cycle_diff;
3bd31caf 1098 int ns_to;
ef79bbde 1099
3154bfab 1100 cycle_diff = cycles_to - spu.cycles_played;
650adfd2 1101 if (cycle_diff < -2*1048576 || cycle_diff > 2*1048576)
1102 {
1103 //xprintf("desync %u %d\n", cycles_to, cycle_diff);
3154bfab 1104 spu.cycles_played = cycles_to;
650adfd2 1105 return;
1106 }
e34a4bd3 1107
3bd31caf 1108 silentch = ~(spu.dwChannelOn | spu.dwNewChannel) & 0xffffff;
1109
1110 do_direct |= (silentch == 0xffffff);
de4a0279 1111 if (worker != NULL)
1112 sync_worker_thread(do_direct);
1113
650adfd2 1114 if (cycle_diff < 2 * 768)
1115 return;
e34a4bd3 1116
650adfd2 1117 ns_to = (cycle_diff / 768 + 1) & ~1;
1118 if (ns_to > NSSIZE) {
1119 // should never happen
1120 //xprintf("ns_to oflow %d %d\n", ns_to, NSSIZE);
1121 ns_to = NSSIZE;
1122 }
1123
1124 //////////////////////////////////////////////////////
1125 // special irq handling in the decode buffers (0x0000-0x1000)
1126 // we know:
1127 // the decode buffers are located in spu memory in the following way:
1128 // 0x0000-0x03ff CD audio left
1129 // 0x0400-0x07ff CD audio right
1130 // 0x0800-0x0bff Voice 1
1131 // 0x0c00-0x0fff Voice 3
1132 // and decoded data is 16 bit for one sample
1133 // we assume:
1134 // even if voices 1/3 are off or no cd audio is playing, the internal
1135 // play positions will move on and wrap after 0x400 bytes.
1136 // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
1137 // increase this pointer on each sample by 2 bytes. If this pointer
1138 // (or 0x400 offsets of this pointer) hits the spuirq address, we generate
1139 // an IRQ.
1140
3154bfab 1141 if (unlikely((spu.spuCtrl & CTRL_IRQ)
c4c66b22 1142 && spu.pSpuIrq < spu.spuMemC+0x1000))
650adfd2 1143 {
3154bfab 1144 int irq_pos = (spu.pSpuIrq - spu.spuMemC) / 2 & 0x1ff;
1145 int left = (irq_pos - spu.decode_pos) & 0x1ff;
650adfd2 1146 if (0 < left && left <= ns_to)
1147 {
3154bfab 1148 //xprintf("decoder irq %x\n", spu.decode_pos);
650adfd2 1149 do_irq();
650adfd2 1150 }
1151 }
1152
7b2c4897 1153 if (unlikely(spu.rvb->dirty))
1154 REVERBPrep();
1155
3bd31caf 1156 if (do_direct || worker == NULL || !spu_config.iUseThread) {
1157 do_channels(ns_to);
05c7cec7 1158 do_samples_finish(spu.SSumLR, ns_to, silentch, spu.decode_pos);
63a4f6b6 1159 }
215ff9e6 1160 else {
3bd31caf 1161 queue_channel_work(ns_to, silentch);
215ff9e6 1162 }
ef79bbde 1163
215ff9e6 1164 // advance "stopped" channels that can cause irqs
1165 // (all chans are always playing on the real thing..)
1166 if (spu.spuCtrl & CTRL_IRQ)
1167 do_silent_chans(ns_to, silentch);
1168
1169 spu.cycles_played += ns_to * 768;
1170 spu.decode_pos = (spu.decode_pos + ns_to) & 0x1ff;
1171}
1172
05c7cec7 1173static void do_samples_finish(int *SSumLR, int ns_to,
3bd31caf 1174 int silentch, int decode_pos)
215ff9e6 1175{
1176 int volmult = spu_config.iVolume;
1177 int ns;
1178 int d;
78c60846 1179
3bd31caf 1180 // must clear silent channel decode buffers
1181 if(unlikely(silentch & spu.decode_dirty_ch & (1<<1)))
b72f17a1 1182 {
3154bfab 1183 memset(&spu.spuMem[0x800/2], 0, 0x400);
1184 spu.decode_dirty_ch &= ~(1<<1);
b72f17a1 1185 }
3154bfab 1186 if(unlikely(silentch & spu.decode_dirty_ch & (1<<3)))
b72f17a1 1187 {
3154bfab 1188 memset(&spu.spuMem[0xc00/2], 0, 0x400);
1189 spu.decode_dirty_ch &= ~(1<<3);
b72f17a1 1190 }
8680e822 1191
3bd31caf 1192 MixXA(SSumLR, ns_to, decode_pos);
ef79bbde 1193
3154bfab 1194 if((spu.spuCtrl&0x4000)==0) // muted? (rare, don't optimize for this)
1775933a 1195 {
3154bfab 1196 memset(spu.pS, 0, ns_to * 2 * sizeof(spu.pS[0]));
1197 spu.pS += ns_to * 2;
1775933a 1198 }
1199 else
650adfd2 1200 for (ns = 0; ns < ns_to * 2; )
ef79bbde 1201 {
9e7a7352 1202 d = SSumLR[ns]; SSumLR[ns] = 0;
1203 d = d * volmult >> 10;
1775933a 1204 ssat32_to_16(d);
3154bfab 1205 *spu.pS++ = d;
97ea4077 1206 ns++;
ef79bbde 1207
9e7a7352 1208 d = SSumLR[ns]; SSumLR[ns] = 0;
1209 d = d * volmult >> 10;
1775933a 1210 ssat32_to_16(d);
3154bfab 1211 *spu.pS++ = d;
97ea4077 1212 ns++;
ef79bbde 1213 }
650adfd2 1214}
ef79bbde 1215
650adfd2 1216void schedule_next_irq(void)
1217{
1218 unsigned int upd_samples;
1219 int ch;
ef79bbde 1220
3154bfab 1221 if (spu.scheduleCallback == NULL)
650adfd2 1222 return;
e34a4bd3 1223
650adfd2 1224 upd_samples = 44100 / 50;
e34a4bd3 1225
650adfd2 1226 for (ch = 0; ch < MAXCHAN; ch++)
1227 {
3154bfab 1228 if (spu.dwChannelDead & (1 << ch))
650adfd2 1229 continue;
5514a050 1230 if ((unsigned long)(spu.pSpuIrq - spu.s_chan[ch].pCurr) > IRQ_NEAR_BLOCKS * 16
1231 && (unsigned long)(spu.pSpuIrq - spu.s_chan[ch].pLoop) > IRQ_NEAR_BLOCKS * 16)
650adfd2 1232 continue;
16187bfb 1233
650adfd2 1234 scan_for_irq(ch, &upd_samples);
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1235 }
1236
3154bfab 1237 if (unlikely(spu.pSpuIrq < spu.spuMemC + 0x1000))
650adfd2 1238 {
3154bfab 1239 int irq_pos = (spu.pSpuIrq - spu.spuMemC) / 2 & 0x1ff;
1240 int left = (irq_pos - spu.decode_pos) & 0x1ff;
650adfd2 1241 if (0 < left && left < upd_samples) {
3154bfab 1242 //xprintf("decode: %3d (%3d/%3d)\n", left, spu.decode_pos, irq_pos);
650adfd2 1243 upd_samples = left;
1244 }
1245 }
16187bfb 1246
650adfd2 1247 if (upd_samples < 44100 / 50)
3154bfab 1248 spu.scheduleCallback(upd_samples * 768);
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1249}
1250
1251// SPU ASYNC... even newer epsxe func
1252// 1 time every 'cycle' cycles... harhar
1253
650adfd2 1254// rearmed: called dynamically now
554a2220 1255
650adfd2 1256void CALLBACK SPUasync(unsigned int cycle, unsigned int flags)
ef79bbde 1257{
1e0eac23 1258 do_samples(cycle, spu_config.iUseFixedUpdates);
fb552464 1259
3154bfab 1260 if (spu.spuCtrl & CTRL_IRQ)
650adfd2 1261 schedule_next_irq();
f8edb5bc 1262
650adfd2 1263 if (flags & 1) {
3154bfab 1264 out_current->feed(spu.pSpuBuffer, (unsigned char *)spu.pS - spu.pSpuBuffer);
1265 spu.pS = (short *)spu.pSpuBuffer;
fb552464 1266
3154bfab 1267 if (spu_config.iTempo) {
650adfd2 1268 if (!out_current->busy())
1269 // cause more samples to be generated
1270 // (and break some games because of bad sync)
3154bfab 1271 spu.cycles_played -= 44100 / 60 / 2 * 768;
ef79bbde 1272 }
650adfd2 1273 }
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1274}
1275
1276// SPU UPDATE... new epsxe func
1277// 1 time every 32 hsync lines
1278// (312/32)x50 in pal
1279// (262/32)x60 in ntsc
1280
1281// since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will
1282// leave that func in the linux port, until epsxe linux is using
1283// the async function as well
1284
1285void CALLBACK SPUupdate(void)
1286{
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1287}
1288
1289// XA AUDIO
1290
1291void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap)
1292{
1293 if(!xap) return;
1294 if(!xap->freq) return; // no xa freq ? bye
1295
1296 FeedXA(xap); // call main XA feeder
1297}
1298
1299// CDDA AUDIO
983a7cfd 1300int CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
ef79bbde 1301{
983a7cfd 1302 if (!pcm) return -1;
1303 if (nbytes<=0) return -1;
ef79bbde 1304
983a7cfd 1305 return FeedCDDA((unsigned char *)pcm, nbytes);
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1306}
1307
6d75977b 1308// to be called after state load
1309void ClearWorkingState(void)
ef79bbde 1310{
5514a050 1311 memset(iFMod, 0, sizeof(iFMod));
3154bfab 1312 spu.pS=(short *)spu.pSpuBuffer; // setup soundbuffer pointer
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1313}
1314
1315// SETUPSTREAMS: init most of the spu buffers
05c7cec7 1316static void SetupStreams(void)
ef79bbde 1317{
3154bfab 1318 spu.pSpuBuffer = (unsigned char *)malloc(32768); // alloc mixing buffer
3bd31caf 1319 spu.SSumLR = calloc(NSSIZE * 2, sizeof(spu.SSumLR[0]));
ef79bbde 1320
2cb5735e 1321 spu.XAStart = malloc(44100 * sizeof(uint32_t)); // alloc xa buffer
3154bfab 1322 spu.XAEnd = spu.XAStart + 44100;
1323 spu.XAPlay = spu.XAStart;
1324 spu.XAFeed = spu.XAStart;
ef79bbde 1325
2cb5735e 1326 spu.CDDAStart = malloc(CDDA_BUFFER_SIZE); // alloc cdda buffer
3154bfab 1327 spu.CDDAEnd = spu.CDDAStart + 16384;
1328 spu.CDDAPlay = spu.CDDAStart;
1329 spu.CDDAFeed = spu.CDDAStart;
ef79bbde 1330
6d75977b 1331 ClearWorkingState();
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1332}
1333
1334// REMOVESTREAMS: free most buffer
05c7cec7 1335static void RemoveStreams(void)
ef79bbde 1336{
3154bfab 1337 free(spu.pSpuBuffer); // free mixing buffer
1338 spu.pSpuBuffer = NULL;
3bd31caf 1339 free(spu.SSumLR);
1340 spu.SSumLR = NULL;
3154bfab 1341 free(spu.XAStart); // free XA buffer
1342 spu.XAStart = NULL;
1343 free(spu.CDDAStart); // free CDDA buffer
1344 spu.CDDAStart = NULL;
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1345}
1346
5514a050 1347#if defined(C64X_DSP)
1348
1349/* special code for TI C64x DSP */
1350#include "spu_c64x.c"
1351
1352#elif defined(THREAD_ENABLED)
1353
1354#include <pthread.h>
1355#include <semaphore.h>
1356#include <unistd.h>
1357
1358static struct {
1359 pthread_t thread;
1360 sem_t sem_avail;
1361 sem_t sem_done;
1362} t;
1363
1364/* generic pthread implementation */
1365
1366static void thread_work_start(void)
1367{
1368 sem_post(&t.sem_avail);
1369}
1370
3bd31caf 1371static void thread_work_wait_sync(struct work_item *work, int force)
5514a050 1372{
1373 sem_wait(&t.sem_done);
1374}
63a4f6b6 1375
3bd31caf 1376static int thread_get_i_done(void)
de4a0279 1377{
3bd31caf 1378 return worker->i_done;
de4a0279 1379}
1380
05c7cec7 1381static void thread_sync_caches(void)
1382{
1383}
1384
63a4f6b6 1385static void *spu_worker_thread(void *unused)
1386{
3bd31caf 1387 struct work_item *work;
1388
63a4f6b6 1389 while (1) {
5514a050 1390 sem_wait(&t.sem_avail);
63a4f6b6 1391 if (worker->exit_thread)
1392 break;
1393
3bd31caf 1394 work = &worker->i[worker->i_done & WORK_I_MASK];
1395 do_channel_work(work);
1396 worker->i_done++;
63a4f6b6 1397
5514a050 1398 sem_post(&t.sem_done);
63a4f6b6 1399 }
1400
1401 return NULL;
1402}
1403
1404static void init_spu_thread(void)
1405{
1406 int ret;
1407
1408 if (sysconf(_SC_NPROCESSORS_ONLN) <= 1)
1409 return;
1410
1411 worker = calloc(1, sizeof(*worker));
1412 if (worker == NULL)
1413 return;
5514a050 1414 ret = sem_init(&t.sem_avail, 0, 0);
63a4f6b6 1415 if (ret != 0)
1416 goto fail_sem_avail;
5514a050 1417 ret = sem_init(&t.sem_done, 0, 0);
63a4f6b6 1418 if (ret != 0)
1419 goto fail_sem_done;
1420
5514a050 1421 ret = pthread_create(&t.thread, NULL, spu_worker_thread, NULL);
63a4f6b6 1422 if (ret != 0)
1423 goto fail_thread;
1424
3bd31caf 1425 spu_config.iThreadAvail = 1;
63a4f6b6 1426 return;
1427
1428fail_thread:
5514a050 1429 sem_destroy(&t.sem_done);
63a4f6b6 1430fail_sem_done:
5514a050 1431 sem_destroy(&t.sem_avail);
63a4f6b6 1432fail_sem_avail:
1433 free(worker);
1434 worker = NULL;
3bd31caf 1435 spu_config.iThreadAvail = 0;
63a4f6b6 1436}
1437
1438static void exit_spu_thread(void)
1439{
1440 if (worker == NULL)
1441 return;
1442 worker->exit_thread = 1;
5514a050 1443 sem_post(&t.sem_avail);
1444 pthread_join(t.thread, NULL);
1445 sem_destroy(&t.sem_done);
1446 sem_destroy(&t.sem_avail);
63a4f6b6 1447 free(worker);
1448 worker = NULL;
1449}
1450
1451#else // if !THREAD_ENABLED
1452
1453static void init_spu_thread(void)
1454{
1455}
1456
1457static void exit_spu_thread(void)
1458{
1459}
1460
1461#endif
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1462
1463// SPUINIT: this func will be called first by the main emu
1464long CALLBACK SPUinit(void)
1465{
05c7cec7 1466 int i;
1467
5514a050 1468 spu.spuMemC = calloc(1, 512 * 1024);
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1469 InitADSR();
1470
5514a050 1471 spu.s_chan = calloc(MAXCHAN+1, sizeof(spu.s_chan[0])); // channel + 1 infos (1 is security for fmod handling)
05c7cec7 1472 spu.rvb = calloc(1, sizeof(REVERBInfo));
de4a0279 1473 spu.SB = calloc(MAXCHAN, sizeof(spu.SB[0]) * SB_SIZE);
5514a050 1474
1475 spu.spuAddr = 0;
3154bfab 1476 spu.decode_pos = 0;
c4c66b22 1477 spu.pSpuIrq = spu.spuMemC;
ef79bbde 1478
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1479 SetupStreams(); // prepare streaming
1480
3154bfab 1481 if (spu_config.iVolume == 0)
1482 spu_config.iVolume = 768; // 1024 is 1.0
1483
63a4f6b6 1484 init_spu_thread();
1485
05c7cec7 1486 for (i = 0; i < MAXCHAN; i++) // loop sound channels
1487 {
1488 spu.s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain
1489 spu.s_chan[i].ADSRX.SustainIncrease = 1;
1490 spu.s_chan[i].pLoop = spu.spuMemC;
1491 spu.s_chan[i].pCurr = spu.spuMemC;
9601ca6d 1492 spu.s_chan[i].bIgnoreLoop = 0;
05c7cec7 1493 }
1494
1495 spu.bSpuInit=1; // flag: we are inited
1496
ef79bbde
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1497 return 0;
1498}
1499
1500// SPUOPEN: called by main emu after init
1501long CALLBACK SPUopen(void)
1502{
3154bfab 1503 if (spu.bSPUIsOpen) return 0; // security for some stupid main emus
ef79bbde
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1504
1505 SetupSound(); // setup sound (before init!)
ef79bbde 1506
3154bfab 1507 spu.bSPUIsOpen = 1;
ef79bbde
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1508
1509 return PSE_SPU_ERR_SUCCESS;
1510}
1511
1512// SPUCLOSE: called before shutdown
1513long CALLBACK SPUclose(void)
1514{
3154bfab 1515 if (!spu.bSPUIsOpen) return 0; // some security
ef79bbde 1516
3154bfab 1517 spu.bSPUIsOpen = 0; // no more open
ef79bbde 1518
07c13dfd 1519 out_current->finish(); // no more sound handling
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1520
1521 return 0;
1522}
1523
1524// SPUSHUTDOWN: called by main emu on final exit
1525long CALLBACK SPUshutdown(void)
1526{
1527 SPUclose();
ef79bbde 1528
63a4f6b6 1529 exit_spu_thread();
1530
5514a050 1531 free(spu.spuMemC);
1532 spu.spuMemC = NULL;
de4a0279 1533 free(spu.SB);
1534 spu.SB = NULL;
5514a050 1535 free(spu.s_chan);
1536 spu.s_chan = NULL;
05c7cec7 1537 free(spu.rvb);
1538 spu.rvb = NULL;
5514a050 1539
1540 RemoveStreams(); // no more streaming
1541 spu.bSpuInit=0;
1542
ef79bbde
P
1543 return 0;
1544}
1545
1546// SPUTEST: we don't test, we are always fine ;)
1547long CALLBACK SPUtest(void)
1548{
1549 return 0;
1550}
1551
1552// SPUCONFIGURE: call config dialog
1553long CALLBACK SPUconfigure(void)
1554{
1555#ifdef _MACOSX
1556 DoConfiguration();
1557#else
ee849648 1558// StartCfgTool("CFG");
ef79bbde
P
1559#endif
1560 return 0;
1561}
1562
1563// SPUABOUT: show about window
1564void CALLBACK SPUabout(void)
1565{
1566#ifdef _MACOSX
1567 DoAbout();
1568#else
ee849648 1569// StartCfgTool("ABOUT");
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1570#endif
1571}
1572
1573// SETUP CALLBACKS
1574// this functions will be called once,
1575// passes a callback that should be called on SPU-IRQ/cdda volume change
1576void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void))
1577{
3154bfab 1578 spu.irqCallback = callback;
ef79bbde
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1579}
1580
7d6997de 1581void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(short, short))
ef79bbde 1582{
3154bfab 1583 spu.cddavCallback = CDDAVcallback;
ef79bbde
P
1584}
1585
2b30c129 1586void CALLBACK SPUregisterScheduleCb(void (CALLBACK *callback)(unsigned int))
1587{
3154bfab 1588 spu.scheduleCallback = callback;
2b30c129 1589}
1590
ef79bbde 1591// COMMON PLUGIN INFO FUNCS
e906c010 1592/*
ef79bbde
P
1593char * CALLBACK PSEgetLibName(void)
1594{
1595 return _(libraryName);
1596}
1597
1598unsigned long CALLBACK PSEgetLibType(void)
1599{
1600 return PSE_LT_SPU;
1601}
1602
1603unsigned long CALLBACK PSEgetLibVersion(void)
1604{
1605 return (1 << 16) | (6 << 8);
1606}
1607
1608char * SPUgetLibInfos(void)
1609{
1610 return _(libraryInfo);
1611}
e906c010 1612*/
6d866bb7 1613
90f1d26c 1614// debug
174c454a 1615void spu_get_debug_info(int *chans_out, int *run_chans, int *fmod_chans_out, int *noise_chans_out)
90f1d26c 1616{
174c454a 1617 int ch = 0, fmod_chans = 0, noise_chans = 0, irq_chans = 0;
90f1d26c 1618
5514a050 1619 if (spu.s_chan == NULL)
1620 return;
1621
90f1d26c 1622 for(;ch<MAXCHAN;ch++)
1623 {
3154bfab 1624 if (!(spu.dwChannelOn & (1<<ch)))
90f1d26c 1625 continue;
5514a050 1626 if (spu.s_chan[ch].bFMod == 2)
90f1d26c 1627 fmod_chans |= 1 << ch;
5514a050 1628 if (spu.s_chan[ch].bNoise)
90f1d26c 1629 noise_chans |= 1 << ch;
5514a050 1630 if((spu.spuCtrl&CTRL_IRQ) && spu.s_chan[ch].pCurr <= spu.pSpuIrq && spu.s_chan[ch].pLoop <= spu.pSpuIrq)
174c454a 1631 irq_chans |= 1 << ch;
90f1d26c 1632 }
1633
3154bfab 1634 *chans_out = spu.dwChannelOn;
1635 *run_chans = ~spu.dwChannelOn & ~spu.dwChannelDead & irq_chans;
90f1d26c 1636 *fmod_chans_out = fmod_chans;
1637 *noise_chans_out = noise_chans;
1638}
1639
6d866bb7 1640// vim:shiftwidth=1:expandtab