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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 | |
7 | ***************************************************************************/ | |
8 | /*************************************************************************** | |
9 | * * | |
10 | * This program is free software; you can redistribute it and/or modify * | |
11 | * it under the terms of the GNU General Public License as published by * | |
12 | * the Free Software Foundation; either version 2 of the License, or * | |
13 | * (at your option) any later version. See also the license.txt file for * | |
14 | * additional informations. * | |
15 | * * | |
16 | ***************************************************************************/ | |
17 | ||
18 | #include "stdafx.h" | |
19 | ||
20 | #define _IN_SPU | |
21 | ||
22 | #include "externals.h" | |
3fc2a4c2 | 23 | #include "registers.h" |
ef79bbde P |
24 | #include "cfg.h" |
25 | #include "dsoundoss.h" | |
26 | #include "regs.h" | |
27 | ||
28 | #ifdef ENABLE_NLS | |
29 | #include <libintl.h> | |
30 | #include <locale.h> | |
31 | #define _(x) gettext(x) | |
32 | #define N_(x) (x) | |
33 | #else | |
34 | #define _(x) (x) | |
35 | #define N_(x) (x) | |
36 | #endif | |
37 | ||
6d866bb7 | 38 | /* |
ef79bbde P |
39 | #if defined (USEMACOSX) |
40 | static char * libraryName = N_("Mac OS X Sound"); | |
41 | #elif defined (USEALSA) | |
42 | static char * libraryName = N_("ALSA Sound"); | |
43 | #elif defined (USEOSS) | |
44 | static char * libraryName = N_("OSS Sound"); | |
45 | #elif defined (USESDL) | |
46 | static char * libraryName = N_("SDL Sound"); | |
47 | #elif defined (USEPULSEAUDIO) | |
48 | static char * libraryName = N_("PulseAudio Sound"); | |
49 | #else | |
50 | static char * libraryName = N_("NULL Sound"); | |
51 | #endif | |
52 | ||
53 | static char * libraryInfo = N_("P.E.Op.S. Sound Driver V1.7\nCoded by Pete Bernert and the P.E.Op.S. team\n"); | |
6d866bb7 | 54 | */ |
ef79bbde P |
55 | |
56 | // globals | |
57 | ||
58 | // psx buffer / addresses | |
59 | ||
60 | unsigned short regArea[10000]; | |
61 | unsigned short spuMem[256*1024]; | |
62 | unsigned char * spuMemC; | |
63 | unsigned char * pSpuIrq=0; | |
64 | unsigned char * pSpuBuffer; | |
65 | unsigned char * pMixIrq=0; | |
66 | ||
67 | // user settings | |
68 | ||
69 | int iVolume=3; | |
70 | int iXAPitch=1; | |
71 | int iUseTimer=2; | |
72 | int iSPUIRQWait=1; | |
73 | int iDebugMode=0; | |
74 | int iRecordMode=0; | |
75 | int iUseReverb=2; | |
76 | int iUseInterpolation=2; | |
ef79bbde P |
77 | |
78 | // MAIN infos struct for each channel | |
79 | ||
80 | SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling) | |
81 | REVERBInfo rvb; | |
82 | ||
83 | unsigned long dwNoiseVal=1; // global noise generator | |
84 | int iSpuAsyncWait=0; | |
85 | ||
86 | unsigned short spuCtrl=0; // some vars to store psx reg infos | |
87 | unsigned short spuStat=0; | |
88 | unsigned short spuIrq=0; | |
89 | unsigned long spuAddr=0xffffffff; // address into spu mem | |
90 | int bEndThread=0; // thread handlers | |
91 | int bThreadEnded=0; | |
92 | int bSpuInit=0; | |
93 | int bSPUIsOpen=0; | |
94 | ||
95 | static pthread_t thread = (pthread_t)-1; // thread id (linux) | |
96 | ||
97 | unsigned long dwNewChannel=0; // flags for faster testing, if new channel starts | |
6d866bb7 | 98 | unsigned long dwChannelOn=0; |
3fc2a4c2 | 99 | unsigned long dwPendingChanOff=0; |
ef79bbde P |
100 | |
101 | void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq | |
102 | void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0; | |
103 | ||
104 | // certain globals (were local before, but with the new timeproc I need em global) | |
105 | ||
6d866bb7 | 106 | static const int f[8][2] = { { 0, 0 }, |
ef79bbde P |
107 | { 60, 0 }, |
108 | { 115, -52 }, | |
109 | { 98, -55 }, | |
110 | { 122, -60 } }; | |
97ea4077 | 111 | int SSumLR[NSSIZE*2]; |
ef79bbde P |
112 | int iFMod[NSSIZE]; |
113 | int iCycle = 0; | |
114 | short * pS; | |
115 | ||
116 | int lastch=-1; // last channel processed on spu irq in timer mode | |
117 | static int lastns=0; // last ns pos | |
118 | static int iSecureStart=0; // secure start counter | |
119 | ||
120 | //////////////////////////////////////////////////////////////////////// | |
121 | // CODE AREA | |
122 | //////////////////////////////////////////////////////////////////////// | |
123 | ||
124 | // dirty inline func includes | |
125 | ||
126 | #include "reverb.c" | |
127 | #include "adsr.c" | |
128 | ||
129 | //////////////////////////////////////////////////////////////////////// | |
130 | // helpers for simple interpolation | |
131 | ||
132 | // | |
133 | // easy interpolation on upsampling, no special filter, just "Pete's common sense" tm | |
134 | // | |
135 | // instead of having n equal sample values in a row like: | |
136 | // ____ | |
137 | // |____ | |
138 | // | |
139 | // we compare the current delta change with the next delta change. | |
140 | // | |
141 | // if curr_delta is positive, | |
142 | // | |
143 | // - and next delta is smaller (or changing direction): | |
144 | // \. | |
145 | // -__ | |
146 | // | |
147 | // - and next delta significant (at least twice) bigger: | |
148 | // --_ | |
149 | // \. | |
150 | // | |
151 | // - and next delta is nearly same: | |
152 | // \. | |
153 | // \. | |
154 | // | |
155 | // | |
156 | // if curr_delta is negative, | |
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 | ||
172 | INLINE void InterpolateUp(int ch) | |
173 | { | |
174 | if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass | |
175 | { | |
176 | const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val | |
177 | const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :) | |
178 | ||
179 | s_chan[ch].SB[32]=0; | |
180 | ||
181 | if(id1>0) // curr delta positive | |
182 | { | |
183 | if(id2<id1) | |
184 | {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;} | |
185 | else | |
186 | if(id2<(id1<<1)) | |
187 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L; | |
188 | else | |
189 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L; | |
190 | } | |
191 | else // curr delta negative | |
192 | { | |
193 | if(id2>id1) | |
194 | {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;} | |
195 | else | |
196 | if(id2>(id1<<1)) | |
197 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L; | |
198 | else | |
199 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L; | |
200 | } | |
201 | } | |
202 | else | |
203 | if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass | |
204 | { | |
205 | s_chan[ch].SB[32]=0; | |
206 | ||
207 | s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L; | |
208 | if(s_chan[ch].sinc<=0x8000) | |
209 | s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1)); | |
210 | else s_chan[ch].SB[29]+=s_chan[ch].SB[28]; | |
211 | } | |
212 | else // no flags? add bigger val (if possible), calc smaller step, set flag1 | |
213 | s_chan[ch].SB[29]+=s_chan[ch].SB[28]; | |
214 | } | |
215 | ||
216 | // | |
217 | // even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm | |
218 | // | |
219 | ||
220 | INLINE void InterpolateDown(int ch) | |
221 | { | |
222 | if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val? | |
223 | { | |
224 | s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight | |
225 | if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals? | |
226 | s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight | |
227 | } | |
228 | } | |
229 | ||
230 | //////////////////////////////////////////////////////////////////////// | |
231 | // helpers for gauss interpolation | |
232 | ||
233 | #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos]) | |
234 | #define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3]) | |
235 | ||
236 | #include "gauss_i.h" | |
237 | ||
238 | //////////////////////////////////////////////////////////////////////// | |
239 | ||
240 | #include "xa.c" | |
241 | ||
242 | //////////////////////////////////////////////////////////////////////// | |
243 | // START SOUND... called by main thread to setup a new sound on a channel | |
244 | //////////////////////////////////////////////////////////////////////// | |
245 | ||
246 | INLINE void StartSound(int ch) | |
247 | { | |
248 | StartADSR(ch); | |
249 | StartREVERB(ch); | |
250 | ||
b00afb77 | 251 | // fussy timing issues - do in VoiceOn |
252 | //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start | |
253 | //s_chan[ch].bStop=0; | |
254 | //s_chan[ch].bOn=1; | |
ef79bbde P |
255 | |
256 | s_chan[ch].s_1=0; // init mixing vars | |
257 | s_chan[ch].s_2=0; | |
258 | s_chan[ch].iSBPos=28; | |
259 | ||
ef79bbde P |
260 | s_chan[ch].SB[29]=0; // init our interpolation helpers |
261 | s_chan[ch].SB[30]=0; | |
262 | ||
263 | if(iUseInterpolation>=2) // gauss interpolation? | |
264 | {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding | |
265 | else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding | |
266 | ||
267 | dwNewChannel&=~(1<<ch); // clear new channel bit | |
268 | } | |
269 | ||
270 | //////////////////////////////////////////////////////////////////////// | |
271 | // ALL KIND OF HELPERS | |
272 | //////////////////////////////////////////////////////////////////////// | |
273 | ||
274 | INLINE void VoiceChangeFrequency(int ch) | |
275 | { | |
276 | s_chan[ch].iUsedFreq=s_chan[ch].iActFreq; // -> take it and calc steps | |
277 | s_chan[ch].sinc=s_chan[ch].iRawPitch<<4; | |
278 | if(!s_chan[ch].sinc) s_chan[ch].sinc=1; | |
279 | if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simle imterpolation mode: set flag | |
280 | } | |
281 | ||
282 | //////////////////////////////////////////////////////////////////////// | |
283 | ||
284 | INLINE void FModChangeFrequency(int ch,int ns) | |
285 | { | |
286 | int NP=s_chan[ch].iRawPitch; | |
287 | ||
288 | NP=((32768L+iFMod[ns])*NP)/32768L; | |
289 | ||
290 | if(NP>0x3fff) NP=0x3fff; | |
291 | if(NP<0x1) NP=0x1; | |
292 | ||
293 | NP=(44100L*NP)/(4096L); // calc frequency | |
294 | ||
295 | s_chan[ch].iActFreq=NP; | |
296 | s_chan[ch].iUsedFreq=NP; | |
297 | s_chan[ch].sinc=(((NP/10)<<16)/4410); | |
298 | if(!s_chan[ch].sinc) s_chan[ch].sinc=1; | |
299 | if(iUseInterpolation==1) // freq change in simple interpolation mode | |
300 | s_chan[ch].SB[32]=1; | |
301 | iFMod[ns]=0; | |
302 | } | |
303 | ||
304 | //////////////////////////////////////////////////////////////////////// | |
305 | ||
306 | // noise handler... just produces some noise data | |
307 | // surely wrong... and no noise frequency (spuCtrl&0x3f00) will be used... | |
308 | // and sometimes the noise will be used as fmod modulation... pfff | |
309 | ||
310 | INLINE int iGetNoiseVal(int ch) | |
311 | { | |
312 | int fa; | |
313 | ||
314 | if((dwNoiseVal<<=1)&0x80000000L) | |
315 | { | |
316 | dwNoiseVal^=0x0040001L; | |
317 | fa=((dwNoiseVal>>2)&0x7fff); | |
318 | fa=-fa; | |
319 | } | |
320 | else fa=(dwNoiseVal>>2)&0x7fff; | |
321 | ||
322 | // mmm... depending on the noise freq we allow bigger/smaller changes to the previous val | |
323 | fa=s_chan[ch].iOldNoise+((fa-s_chan[ch].iOldNoise)/((0x001f-((spuCtrl&0x3f00)>>9))+1)); | |
324 | if(fa>32767L) fa=32767L; | |
325 | if(fa<-32767L) fa=-32767L; | |
326 | s_chan[ch].iOldNoise=fa; | |
327 | ||
328 | if(iUseInterpolation<2) // no gauss/cubic interpolation? | |
329 | s_chan[ch].SB[29] = fa; // -> store noise val in "current sample" slot | |
330 | return fa; | |
331 | } | |
332 | ||
333 | //////////////////////////////////////////////////////////////////////// | |
334 | ||
335 | INLINE void StoreInterpolationVal(int ch,int fa) | |
336 | { | |
337 | if(s_chan[ch].bFMod==2) // fmod freq channel | |
338 | s_chan[ch].SB[29]=fa; | |
339 | else | |
340 | { | |
341 | if((spuCtrl&0x4000)==0) fa=0; // muted? | |
342 | else // else adjust | |
343 | { | |
344 | if(fa>32767L) fa=32767L; | |
345 | if(fa<-32767L) fa=-32767L; | |
346 | } | |
347 | ||
348 | if(iUseInterpolation>=2) // gauss/cubic interpolation | |
349 | { | |
350 | int gpos = s_chan[ch].SB[28]; | |
351 | gval0 = fa; | |
352 | gpos = (gpos+1) & 3; | |
353 | s_chan[ch].SB[28] = gpos; | |
354 | } | |
355 | else | |
356 | if(iUseInterpolation==1) // simple interpolation | |
357 | { | |
358 | s_chan[ch].SB[28] = 0; | |
359 | 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' | |
360 | s_chan[ch].SB[30] = s_chan[ch].SB[31]; | |
361 | s_chan[ch].SB[31] = fa; | |
362 | s_chan[ch].SB[32] = 1; // -> flag: calc new interolation | |
363 | } | |
364 | else s_chan[ch].SB[29]=fa; // no interpolation | |
365 | } | |
366 | } | |
367 | ||
368 | //////////////////////////////////////////////////////////////////////// | |
369 | ||
370 | INLINE int iGetInterpolationVal(int ch) | |
371 | { | |
372 | int fa; | |
373 | ||
374 | if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29]; | |
375 | ||
376 | switch(iUseInterpolation) | |
377 | { | |
378 | //--------------------------------------------------// | |
379 | case 3: // cubic interpolation | |
380 | { | |
381 | long xd;int gpos; | |
382 | xd = ((s_chan[ch].spos) >> 1)+1; | |
383 | gpos = s_chan[ch].SB[28]; | |
384 | ||
385 | fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0; | |
386 | fa *= (xd - (2<<15)) / 6; | |
387 | fa >>= 15; | |
388 | fa += gval(2) - gval(1) - gval(1) + gval0; | |
389 | fa *= (xd - (1<<15)) >> 1; | |
390 | fa >>= 15; | |
391 | fa += gval(1) - gval0; | |
392 | fa *= xd; | |
393 | fa >>= 15; | |
394 | fa = fa + gval0; | |
395 | ||
396 | } break; | |
397 | //--------------------------------------------------// | |
398 | case 2: // gauss interpolation | |
399 | { | |
400 | int vl, vr;int gpos; | |
401 | vl = (s_chan[ch].spos >> 6) & ~3; | |
402 | gpos = s_chan[ch].SB[28]; | |
403 | vr=(gauss[vl]*gval0)&~2047; | |
404 | vr+=(gauss[vl+1]*gval(1))&~2047; | |
405 | vr+=(gauss[vl+2]*gval(2))&~2047; | |
406 | vr+=(gauss[vl+3]*gval(3))&~2047; | |
407 | fa = vr>>11; | |
408 | } break; | |
409 | //--------------------------------------------------// | |
410 | case 1: // simple interpolation | |
411 | { | |
412 | if(s_chan[ch].sinc<0x10000L) // -> upsampling? | |
413 | InterpolateUp(ch); // --> interpolate up | |
414 | else InterpolateDown(ch); // --> else down | |
415 | fa=s_chan[ch].SB[29]; | |
416 | } break; | |
417 | //--------------------------------------------------// | |
418 | default: // no interpolation | |
419 | { | |
420 | fa=s_chan[ch].SB[29]; | |
421 | } break; | |
422 | //--------------------------------------------------// | |
423 | } | |
424 | ||
425 | return fa; | |
426 | } | |
427 | ||
3fc2a4c2 | 428 | static void do_irq(void) |
429 | { | |
430 | if(!(spuStat & STAT_IRQ)) | |
431 | { | |
432 | spuStat |= STAT_IRQ; | |
433 | if(irqCallback) irqCallback(); | |
434 | } | |
435 | } | |
436 | ||
e11ae5c5 | 437 | static int decode_block(int ch) |
438 | { | |
439 | unsigned char *start; | |
440 | unsigned int nSample; | |
441 | int predict_nr,shift_factor,flags,d,s; | |
442 | int fa,s_1,s_2; | |
443 | int ret = 0; | |
444 | ||
445 | s_chan[ch].iSBPos=0; | |
446 | ||
447 | start=s_chan[ch].pCurr; // set up the current pos | |
3fc2a4c2 | 448 | if(start == (unsigned char*)-1 || // special "stop" sign |
449 | (dwPendingChanOff&(1<<ch))) | |
e11ae5c5 | 450 | { |
451 | dwChannelOn&=~(1<<ch); // -> turn everything off | |
3fc2a4c2 | 452 | dwPendingChanOff&=~(1<<ch); |
e11ae5c5 | 453 | s_chan[ch].bStop=1; |
454 | s_chan[ch].ADSRX.EnvelopeVol=0; | |
455 | return 0; // -> and done for this channel | |
456 | } | |
457 | ||
3fc2a4c2 | 458 | //////////////////////////////////////////// irq check |
459 | ||
460 | if(spuCtrl&CTRL_IRQ) | |
461 | { | |
462 | if(pSpuIrq == start) // irq address reached? | |
463 | { | |
464 | do_irq(); // -> call main emu | |
465 | ret = 1; | |
466 | } | |
467 | } | |
e11ae5c5 | 468 | |
469 | s_1=s_chan[ch].s_1; | |
470 | s_2=s_chan[ch].s_2; | |
471 | ||
472 | predict_nr=(int)*start;start++; | |
473 | shift_factor=predict_nr&0xf; | |
474 | predict_nr >>= 4; | |
475 | flags=(int)*start;start++; | |
476 | ||
477 | // -------------------------------------- // | |
478 | ||
479 | for (nSample=0;nSample<28;start++) | |
480 | { | |
481 | d=(int)*start; | |
482 | s=((d&0xf)<<12); | |
483 | if(s&0x8000) s|=0xffff0000; | |
484 | ||
485 | fa=(s >> shift_factor); | |
486 | fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6); | |
487 | s_2=s_1;s_1=fa; | |
488 | s=((d & 0xf0) << 8); | |
489 | ||
490 | s_chan[ch].SB[nSample++]=fa; | |
491 | ||
492 | if(s&0x8000) s|=0xffff0000; | |
493 | fa=(s>>shift_factor); | |
494 | fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6); | |
495 | s_2=s_1;s_1=fa; | |
496 | ||
497 | s_chan[ch].SB[nSample++]=fa; | |
498 | } | |
499 | ||
e11ae5c5 | 500 | //////////////////////////////////////////// flag handler |
501 | ||
502 | if((flags&4) && (!s_chan[ch].bIgnoreLoop)) | |
503 | s_chan[ch].pLoop=start-16; // loop adress | |
504 | ||
505 | if(flags&1) // 1: stop/loop | |
506 | { | |
3fc2a4c2 | 507 | if(!(flags&2)) |
508 | dwPendingChanOff|=1<<ch; | |
509 | ||
510 | start = s_chan[ch].pLoop; | |
e11ae5c5 | 511 | } |
512 | ||
513 | if (start - spuMemC >= 0x80000) | |
514 | start = (unsigned char*)-1; | |
515 | ||
516 | s_chan[ch].pCurr=start; // store values for next cycle | |
517 | s_chan[ch].s_1=s_1; | |
518 | s_chan[ch].s_2=s_2; | |
519 | ||
520 | return ret; | |
521 | } | |
522 | ||
ef79bbde P |
523 | //////////////////////////////////////////////////////////////////////// |
524 | // MAIN SPU FUNCTION | |
525 | // here is the main job handler... thread, timer or direct func call | |
526 | // basically the whole sound processing is done in this fat func! | |
527 | //////////////////////////////////////////////////////////////////////// | |
528 | ||
529 | // 5 ms waiting phase, if buffer is full and no new sound has to get started | |
530 | // .. can be made smaller (smallest val: 1 ms), but bigger waits give | |
531 | // better performance | |
532 | ||
533 | #define PAUSE_W 5 | |
534 | #define PAUSE_L 5000 | |
535 | ||
536 | //////////////////////////////////////////////////////////////////////// | |
537 | ||
538 | static void *MAINThread(void *arg) | |
539 | { | |
e11ae5c5 | 540 | int fa,ns,ns_from,ns_to; |
cfe71c00 | 541 | #if !defined(_MACOSX) && !defined(__arm__) |
ef79bbde P |
542 | int voldiv = iVolume; |
543 | #else | |
544 | const int voldiv = 2; | |
545 | #endif | |
e11ae5c5 | 546 | int ch,d; |
ef79bbde P |
547 | int bIRQReturn=0; |
548 | ||
549 | while(!bEndThread) // until we are shutting down | |
550 | { | |
551 | // ok, at the beginning we are looking if there is | |
552 | // enuff free place in the dsound/oss buffer to | |
553 | // fill in new data, or if there is a new channel to start. | |
554 | // if not, we wait (thread) or return (timer/spuasync) | |
555 | // until enuff free place is available/a new channel gets | |
556 | // started | |
557 | ||
558 | if(dwNewChannel) // new channel should start immedately? | |
559 | { // (at least one bit 0 ... MAXCHANNEL is set?) | |
560 | iSecureStart++; // -> set iSecure | |
561 | 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) | |
562 | } | |
563 | else iSecureStart=0; // 0: no new channel should start | |
564 | ||
565 | while(!iSecureStart && !bEndThread && // no new start? no thread end? | |
566 | (SoundGetBytesBuffered()>TESTSIZE)) // and still enuff data in sound buffer? | |
567 | { | |
568 | iSecureStart=0; // reset secure | |
569 | ||
570 | if(iUseTimer) return 0; // linux no-thread mode? bye | |
571 | usleep(PAUSE_L); // else sleep for x ms (linux) | |
572 | ||
573 | if(dwNewChannel) iSecureStart=1; // if a new channel kicks in (or, of course, sound buffer runs low), we will leave the loop | |
574 | } | |
575 | ||
576 | //--------------------------------------------------// continue from irq handling in timer mode? | |
577 | ||
8680e822 | 578 | ns_from=0; |
579 | ns_to=NSSIZE; | |
580 | ch=0; | |
ef79bbde P |
581 | if(lastch>=0) // will be -1 if no continue is pending |
582 | { | |
e11ae5c5 | 583 | ch=lastch; ns_from=lastns; lastch=-1; // -> setup all kind of vars to continue |
ef79bbde P |
584 | } |
585 | ||
586 | //--------------------------------------------------// | |
587 | //- main channel loop -// | |
588 | //--------------------------------------------------// | |
589 | { | |
8680e822 | 590 | for(;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel |
ef79bbde | 591 | { |
6d866bb7 | 592 | if(dwNewChannel&(1<<ch)) StartSound(ch); // start new sound |
593 | if(!(dwChannelOn&(1<<ch))) continue; // channel not playing? next | |
ef79bbde P |
594 | |
595 | if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency? | |
596 | VoiceChangeFrequency(ch); | |
597 | ||
8680e822 | 598 | for(ns=ns_from;ns<ns_to;ns++) // loop until 1 ms of data is reached |
ef79bbde | 599 | { |
6d866bb7 | 600 | int sval; |
601 | ||
e11ae5c5 | 602 | if(!(dwChannelOn&(1<<ch))) break; // something turned ch off (adsr or flags) |
603 | ||
ef79bbde P |
604 | if(s_chan[ch].bFMod==1 && iFMod[ns]) // fmod freq channel |
605 | FModChangeFrequency(ch,ns); | |
606 | ||
607 | while(s_chan[ch].spos>=0x10000L) | |
608 | { | |
609 | if(s_chan[ch].iSBPos==28) // 28 reached? | |
610 | { | |
e11ae5c5 | 611 | d = decode_block(ch); |
612 | if(d && iSPUIRQWait) // -> option: wait after irq for main emu | |
ef79bbde | 613 | { |
e11ae5c5 | 614 | bIRQReturn=1; |
615 | lastch=ch; | |
616 | lastns=ns_to=ns; | |
617 | goto ENDX; // do remaining chans unil this ns | |
ef79bbde | 618 | } |
ef79bbde P |
619 | } |
620 | ||
621 | fa=s_chan[ch].SB[s_chan[ch].iSBPos++]; // get sample data | |
622 | ||
623 | StoreInterpolationVal(ch,fa); // store val for later interpolation | |
624 | ||
625 | s_chan[ch].spos -= 0x10000L; | |
626 | } | |
627 | ||
628 | if(s_chan[ch].bNoise) | |
629 | fa=iGetNoiseVal(ch); // get noise val | |
630 | else fa=iGetInterpolationVal(ch); // get sample val | |
631 | ||
e11ae5c5 | 632 | sval = (MixADSR(ch) * fa) / 1024; // mix adsr |
ef79bbde P |
633 | |
634 | if(s_chan[ch].bFMod==2) // fmod freq channel | |
6d866bb7 | 635 | iFMod[ns]=sval; // -> store 1T sample data, use that to do fmod on next channel |
ef79bbde P |
636 | else // no fmod freq channel |
637 | { | |
638 | ////////////////////////////////////////////// | |
639 | // ok, left/right sound volume (psx volume goes from 0 ... 0x3fff) | |
640 | ||
97ea4077 | 641 | SSumLR[ns*2] +=(sval*s_chan[ch].iLeftVolume)/0x4000L; |
642 | SSumLR[ns*2+1]+=(sval*s_chan[ch].iRightVolume)/0x4000L; | |
ef79bbde P |
643 | |
644 | ////////////////////////////////////////////// | |
645 | // now let us store sound data for reverb | |
646 | ||
6d866bb7 | 647 | if(s_chan[ch].bRVBActive) StoreREVERB(ch,ns,sval); |
ef79bbde P |
648 | } |
649 | ||
650 | //////////////////////////////////////////////// | |
651 | // ok, go on until 1 ms data of this channel is collected | |
652 | ||
ef79bbde | 653 | s_chan[ch].spos += s_chan[ch].sinc; |
ef79bbde | 654 | } |
e11ae5c5 | 655 | ENDX: ; |
ef79bbde P |
656 | } |
657 | } | |
658 | ||
78c60846 | 659 | // advance "stopped" channels that can cause irqs |
660 | // (all chans are always playing on the real thing..) | |
661 | if(!bIRQReturn && (spuCtrl&CTRL_IRQ)) | |
662 | for(ch=0;ch<MAXCHAN;ch++) | |
663 | { | |
664 | if(dwChannelOn&(1<<ch)) continue; // already handled | |
665 | if(s_chan[ch].pCurr == (unsigned char *)-1) | |
666 | continue; | |
667 | if(s_chan[ch].pCurr > pSpuIrq && s_chan[ch].pLoop > pSpuIrq) | |
668 | continue; | |
669 | ||
670 | if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency? | |
671 | VoiceChangeFrequency(ch); | |
672 | ||
673 | s_chan[ch].spos += s_chan[ch].sinc * NSSIZE; | |
674 | while(s_chan[ch].spos >= 28 * 0x10000) | |
675 | { | |
676 | unsigned char *start=s_chan[ch].pCurr; | |
677 | int flags = start[1]; | |
678 | ||
679 | // Tron Bonne hack, probably wrong (could be wrong memory contents..) | |
680 | if(flags & ~7) flags = 0; | |
681 | ||
682 | if(start == pSpuIrq) | |
683 | { | |
684 | do_irq(); | |
685 | bIRQReturn = 1; | |
686 | } | |
687 | else if((flags & 1) && start == s_chan[ch].pLoop) | |
688 | { | |
689 | // looping on self | |
690 | s_chan[ch].pCurr=(unsigned char *)-1; | |
691 | break; | |
692 | } | |
693 | ||
694 | if((flags&4) && !s_chan[ch].bIgnoreLoop) | |
695 | s_chan[ch].pLoop=start; | |
696 | ||
697 | s_chan[ch].pCurr += 16; | |
698 | ||
699 | if(flags & 1) | |
700 | s_chan[ch].pCurr = s_chan[ch].pLoop; | |
701 | ||
702 | s_chan[ch].spos -= 28 * 0x10000; | |
703 | } | |
704 | } | |
705 | ||
e11ae5c5 | 706 | if(bIRQReturn && iSPUIRQWait) // special return for "spu irq - wait for cpu action" |
8680e822 | 707 | { |
e11ae5c5 | 708 | iSpuAsyncWait=1; |
8680e822 | 709 | bIRQReturn=0; |
710 | if(iUseTimer!=2) | |
711 | { | |
712 | DWORD dwWatchTime=timeGetTime_spu()+2500; | |
713 | ||
714 | while(iSpuAsyncWait && !bEndThread && | |
715 | timeGetTime_spu()<dwWatchTime) | |
716 | usleep(1000L); | |
717 | continue; | |
718 | } | |
719 | else | |
720 | { | |
721 | return 0; | |
722 | } | |
723 | } | |
724 | ||
725 | ||
ef79bbde P |
726 | //---------------------------------------------------// |
727 | //- here we have another 1 ms of sound data | |
728 | //---------------------------------------------------// | |
729 | // mix XA infos (if any) | |
730 | ||
731 | MixXA(); | |
732 | ||
733 | /////////////////////////////////////////////////////// | |
734 | // mix all channels (including reverb) into one buffer | |
735 | ||
97ea4077 | 736 | for (ns = 0; ns < NSSIZE*2; ) |
ef79bbde | 737 | { |
97ea4077 | 738 | SSumLR[ns] += MixREVERBLeft(ns/2); |
ef79bbde | 739 | |
97ea4077 | 740 | d = SSumLR[ns] / voldiv; SSumLR[ns] = 0; |
ef79bbde P |
741 | if (d < -32767) d = -32767; if (d > 32767) d = 32767; |
742 | *pS++ = d; | |
97ea4077 | 743 | ns++; |
ef79bbde | 744 | |
97ea4077 | 745 | SSumLR[ns] += MixREVERBRight(); |
ef79bbde | 746 | |
97ea4077 | 747 | d = SSumLR[ns] / voldiv; SSumLR[ns] = 0; |
ef79bbde P |
748 | if(d < -32767) d = -32767; if(d > 32767) d = 32767; |
749 | *pS++ = d; | |
97ea4077 | 750 | ns++; |
ef79bbde P |
751 | } |
752 | ||
753 | ////////////////////////////////////////////////////// | |
754 | // special irq handling in the decode buffers (0x0000-0x1000) | |
755 | // we know: | |
756 | // the decode buffers are located in spu memory in the following way: | |
757 | // 0x0000-0x03ff CD audio left | |
758 | // 0x0400-0x07ff CD audio right | |
759 | // 0x0800-0x0bff Voice 1 | |
760 | // 0x0c00-0x0fff Voice 3 | |
761 | // and decoded data is 16 bit for one sample | |
762 | // we assume: | |
763 | // even if voices 1/3 are off or no cd audio is playing, the internal | |
764 | // play positions will move on and wrap after 0x400 bytes. | |
765 | // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and | |
766 | // increase this pointer on each sample by 2 bytes. If this pointer | |
767 | // (or 0x400 offsets of this pointer) hits the spuirq address, we generate | |
768 | // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here | |
769 | // in some of Peops timer modes. So: we ignore this option here (for now). | |
770 | ||
3fc2a4c2 | 771 | if(pMixIrq) |
ef79bbde P |
772 | { |
773 | for(ns=0;ns<NSSIZE;ns++) | |
774 | { | |
775 | if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000) | |
776 | { | |
777 | for(ch=0;ch<4;ch++) | |
778 | { | |
779 | if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2) | |
3fc2a4c2 | 780 | do_irq(); |
ef79bbde P |
781 | } |
782 | } | |
783 | pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC; | |
784 | } | |
785 | } | |
786 | ||
787 | InitREVERB(); | |
788 | ||
789 | // feed the sound | |
790 | // wanna have around 1/60 sec (16.666 ms) updates | |
791 | if (iCycle++ > 16) | |
792 | { | |
793 | SoundFeedStreamData((unsigned char *)pSpuBuffer, | |
794 | ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer)); | |
795 | pS = (short *)pSpuBuffer; | |
796 | iCycle = 0; | |
797 | } | |
798 | } | |
799 | ||
800 | // end of big main loop... | |
801 | ||
802 | bThreadEnded = 1; | |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | // SPU ASYNC... even newer epsxe func | |
808 | // 1 time every 'cycle' cycles... harhar | |
809 | ||
810 | void CALLBACK SPUasync(unsigned long cycle) | |
811 | { | |
812 | if(iSpuAsyncWait) | |
813 | { | |
814 | iSpuAsyncWait++; | |
17ed0d69 | 815 | if(iSpuAsyncWait<=16) return; |
ef79bbde P |
816 | iSpuAsyncWait=0; |
817 | } | |
818 | ||
819 | if(iUseTimer==2) // special mode, only used in Linux by this spu (or if you enable the experimental Windows mode) | |
820 | { | |
821 | if(!bSpuInit) return; // -> no init, no call | |
822 | ||
823 | MAINThread(0); // -> linux high-compat mode | |
17ed0d69 | 824 | |
825 | // abuse iSpuAsyncWait mechanism to reduce calls to above function | |
826 | // to make it do larger chunks | |
827 | // note: doing it less often than once per frame causes skips | |
828 | iSpuAsyncWait=1; | |
ef79bbde P |
829 | } |
830 | } | |
831 | ||
832 | // SPU UPDATE... new epsxe func | |
833 | // 1 time every 32 hsync lines | |
834 | // (312/32)x50 in pal | |
835 | // (262/32)x60 in ntsc | |
836 | ||
837 | // since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will | |
838 | // leave that func in the linux port, until epsxe linux is using | |
839 | // the async function as well | |
840 | ||
841 | void CALLBACK SPUupdate(void) | |
842 | { | |
843 | SPUasync(0); | |
844 | } | |
845 | ||
846 | // XA AUDIO | |
847 | ||
848 | void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap) | |
849 | { | |
850 | if(!xap) return; | |
851 | if(!xap->freq) return; // no xa freq ? bye | |
852 | ||
853 | FeedXA(xap); // call main XA feeder | |
854 | } | |
855 | ||
856 | // CDDA AUDIO | |
857 | void CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes) | |
858 | { | |
859 | if (!pcm) return; | |
860 | if (nbytes<=0) return; | |
861 | ||
862 | FeedCDDA((unsigned char *)pcm, nbytes); | |
863 | } | |
864 | ||
865 | // SETUPTIMER: init of certain buffers and threads/timers | |
866 | void SetupTimer(void) | |
867 | { | |
97ea4077 | 868 | memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers |
ef79bbde P |
869 | memset(iFMod,0,NSSIZE*sizeof(int)); |
870 | pS=(short *)pSpuBuffer; // setup soundbuffer pointer | |
871 | ||
872 | bEndThread=0; // init thread vars | |
873 | bThreadEnded=0; | |
874 | bSpuInit=1; // flag: we are inited | |
875 | ||
876 | if(!iUseTimer) // linux: use thread | |
877 | { | |
878 | pthread_create(&thread, NULL, MAINThread, NULL); | |
879 | } | |
880 | } | |
881 | ||
882 | // REMOVETIMER: kill threads/timers | |
883 | void RemoveTimer(void) | |
884 | { | |
885 | bEndThread=1; // raise flag to end thread | |
886 | ||
887 | if(!iUseTimer) // linux tread? | |
888 | { | |
889 | int i=0; | |
890 | while(!bThreadEnded && i<2000) {usleep(1000L);i++;} // -> wait until thread has ended | |
891 | if(thread!=(pthread_t)-1) {pthread_cancel(thread);thread=(pthread_t)-1;} // -> cancel thread anyway | |
892 | } | |
893 | ||
894 | bThreadEnded=0; // no more spu is running | |
895 | bSpuInit=0; | |
896 | } | |
897 | ||
898 | // SETUPSTREAMS: init most of the spu buffers | |
899 | void SetupStreams(void) | |
900 | { | |
901 | int i; | |
902 | ||
903 | pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer | |
904 | ||
905 | if(iUseReverb==1) i=88200*2; | |
906 | else i=NSSIZE*2; | |
907 | ||
908 | sRVBStart = (int *)malloc(i*4); // alloc reverb buffer | |
909 | memset(sRVBStart,0,i*4); | |
910 | sRVBEnd = sRVBStart + i; | |
911 | sRVBPlay = sRVBStart; | |
912 | ||
913 | XAStart = // alloc xa buffer | |
914 | (uint32_t *)malloc(44100 * sizeof(uint32_t)); | |
915 | XAEnd = XAStart + 44100; | |
916 | XAPlay = XAStart; | |
917 | XAFeed = XAStart; | |
918 | ||
919 | CDDAStart = // alloc cdda buffer | |
920 | (uint32_t *)malloc(16384 * sizeof(uint32_t)); | |
921 | CDDAEnd = CDDAStart + 16384; | |
922 | CDDAPlay = CDDAStart; | |
b8e744ce | 923 | CDDAFeed = CDDAStart; |
ef79bbde P |
924 | |
925 | for(i=0;i<MAXCHAN;i++) // loop sound channels | |
926 | { | |
927 | // we don't use mutex sync... not needed, would only | |
928 | // slow us down: | |
929 | // s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL); | |
6d866bb7 | 930 | s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain |
ef79bbde P |
931 | s_chan[i].pLoop=spuMemC; |
932 | s_chan[i].pStart=spuMemC; | |
933 | s_chan[i].pCurr=spuMemC; | |
934 | } | |
935 | ||
936 | pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address | |
937 | } | |
938 | ||
939 | // REMOVESTREAMS: free most buffer | |
940 | void RemoveStreams(void) | |
941 | { | |
942 | free(pSpuBuffer); // free mixing buffer | |
943 | pSpuBuffer = NULL; | |
944 | free(sRVBStart); // free reverb buffer | |
945 | sRVBStart = NULL; | |
946 | free(XAStart); // free XA buffer | |
947 | XAStart = NULL; | |
948 | free(CDDAStart); // free CDDA buffer | |
949 | CDDAStart = NULL; | |
950 | } | |
951 | ||
952 | // INIT/EXIT STUFF | |
953 | ||
954 | // SPUINIT: this func will be called first by the main emu | |
955 | long CALLBACK SPUinit(void) | |
956 | { | |
957 | spuMemC = (unsigned char *)spuMem; // just small setup | |
958 | memset((void *)&rvb, 0, sizeof(REVERBInfo)); | |
959 | InitADSR(); | |
960 | ||
961 | iVolume = 3; | |
962 | iReverbOff = -1; | |
963 | spuIrq = 0; | |
964 | spuAddr = 0xffffffff; | |
965 | bEndThread = 0; | |
966 | bThreadEnded = 0; | |
967 | spuMemC = (unsigned char *)spuMem; | |
968 | pMixIrq = 0; | |
969 | memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN)); | |
970 | pSpuIrq = 0; | |
cdb31c95 | 971 | //iSPUIRQWait = 0; |
ef79bbde P |
972 | lastch = -1; |
973 | ||
d7296e10 | 974 | //ReadConfigSPU(); // read user stuff |
ef79bbde P |
975 | SetupStreams(); // prepare streaming |
976 | ||
977 | return 0; | |
978 | } | |
979 | ||
980 | // SPUOPEN: called by main emu after init | |
981 | long CALLBACK SPUopen(void) | |
982 | { | |
983 | if (bSPUIsOpen) return 0; // security for some stupid main emus | |
984 | ||
985 | SetupSound(); // setup sound (before init!) | |
986 | SetupTimer(); // timer for feeding data | |
987 | ||
988 | bSPUIsOpen = 1; | |
989 | ||
990 | return PSE_SPU_ERR_SUCCESS; | |
991 | } | |
992 | ||
993 | // SPUCLOSE: called before shutdown | |
994 | long CALLBACK SPUclose(void) | |
995 | { | |
996 | if (!bSPUIsOpen) return 0; // some security | |
997 | ||
998 | bSPUIsOpen = 0; // no more open | |
999 | ||
1000 | RemoveTimer(); // no more feeding | |
1001 | RemoveSound(); // no more sound handling | |
1002 | ||
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | // SPUSHUTDOWN: called by main emu on final exit | |
1007 | long CALLBACK SPUshutdown(void) | |
1008 | { | |
1009 | SPUclose(); | |
1010 | RemoveStreams(); // no more streaming | |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | // SPUTEST: we don't test, we are always fine ;) | |
1016 | long CALLBACK SPUtest(void) | |
1017 | { | |
1018 | return 0; | |
1019 | } | |
1020 | ||
1021 | // SPUCONFIGURE: call config dialog | |
1022 | long CALLBACK SPUconfigure(void) | |
1023 | { | |
1024 | #ifdef _MACOSX | |
1025 | DoConfiguration(); | |
1026 | #else | |
ee849648 | 1027 | // StartCfgTool("CFG"); |
ef79bbde P |
1028 | #endif |
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | // SPUABOUT: show about window | |
1033 | void CALLBACK SPUabout(void) | |
1034 | { | |
1035 | #ifdef _MACOSX | |
1036 | DoAbout(); | |
1037 | #else | |
ee849648 | 1038 | // StartCfgTool("ABOUT"); |
ef79bbde P |
1039 | #endif |
1040 | } | |
1041 | ||
1042 | // SETUP CALLBACKS | |
1043 | // this functions will be called once, | |
1044 | // passes a callback that should be called on SPU-IRQ/cdda volume change | |
1045 | void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void)) | |
1046 | { | |
1047 | irqCallback = callback; | |
1048 | } | |
1049 | ||
1050 | void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short)) | |
1051 | { | |
1052 | cddavCallback = CDDAVcallback; | |
1053 | } | |
1054 | ||
1055 | // COMMON PLUGIN INFO FUNCS | |
e906c010 | 1056 | /* |
ef79bbde P |
1057 | char * CALLBACK PSEgetLibName(void) |
1058 | { | |
1059 | return _(libraryName); | |
1060 | } | |
1061 | ||
1062 | unsigned long CALLBACK PSEgetLibType(void) | |
1063 | { | |
1064 | return PSE_LT_SPU; | |
1065 | } | |
1066 | ||
1067 | unsigned long CALLBACK PSEgetLibVersion(void) | |
1068 | { | |
1069 | return (1 << 16) | (6 << 8); | |
1070 | } | |
1071 | ||
1072 | char * SPUgetLibInfos(void) | |
1073 | { | |
1074 | return _(libraryInfo); | |
1075 | } | |
e906c010 | 1076 | */ |
6d866bb7 | 1077 | |
1078 | // vim:shiftwidth=1:expandtab |