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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" | |
23 | #include "cfg.h" | |
24 | #include "dsoundoss.h" | |
25 | #include "regs.h" | |
26 | ||
27 | #ifdef ENABLE_NLS | |
28 | #include <libintl.h> | |
29 | #include <locale.h> | |
30 | #define _(x) gettext(x) | |
31 | #define N_(x) (x) | |
32 | #else | |
33 | #define _(x) (x) | |
34 | #define N_(x) (x) | |
35 | #endif | |
36 | ||
37 | #if defined (USEMACOSX) | |
38 | static char * libraryName = N_("Mac OS X Sound"); | |
39 | #elif defined (USEALSA) | |
40 | static char * libraryName = N_("ALSA Sound"); | |
41 | #elif defined (USEOSS) | |
42 | static char * libraryName = N_("OSS Sound"); | |
43 | #elif defined (USESDL) | |
44 | static char * libraryName = N_("SDL Sound"); | |
45 | #elif defined (USEPULSEAUDIO) | |
46 | static char * libraryName = N_("PulseAudio Sound"); | |
47 | #else | |
48 | static char * libraryName = N_("NULL Sound"); | |
49 | #endif | |
50 | ||
51 | static char * libraryInfo = N_("P.E.Op.S. Sound Driver V1.7\nCoded by Pete Bernert and the P.E.Op.S. team\n"); | |
52 | ||
53 | // globals | |
54 | ||
55 | // psx buffer / addresses | |
56 | ||
57 | unsigned short regArea[10000]; | |
58 | unsigned short spuMem[256*1024]; | |
59 | unsigned char * spuMemC; | |
60 | unsigned char * pSpuIrq=0; | |
61 | unsigned char * pSpuBuffer; | |
62 | unsigned char * pMixIrq=0; | |
63 | ||
64 | // user settings | |
65 | ||
66 | int iVolume=3; | |
67 | int iXAPitch=1; | |
68 | int iUseTimer=2; | |
69 | int iSPUIRQWait=1; | |
70 | int iDebugMode=0; | |
71 | int iRecordMode=0; | |
72 | int iUseReverb=2; | |
73 | int iUseInterpolation=2; | |
74 | int iDisStereo=0; | |
75 | ||
76 | // MAIN infos struct for each channel | |
77 | ||
78 | SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling) | |
79 | REVERBInfo rvb; | |
80 | ||
81 | unsigned long dwNoiseVal=1; // global noise generator | |
82 | int iSpuAsyncWait=0; | |
83 | ||
84 | unsigned short spuCtrl=0; // some vars to store psx reg infos | |
85 | unsigned short spuStat=0; | |
86 | unsigned short spuIrq=0; | |
87 | unsigned long spuAddr=0xffffffff; // address into spu mem | |
88 | int bEndThread=0; // thread handlers | |
89 | int bThreadEnded=0; | |
90 | int bSpuInit=0; | |
91 | int bSPUIsOpen=0; | |
92 | ||
93 | static pthread_t thread = (pthread_t)-1; // thread id (linux) | |
94 | ||
95 | unsigned long dwNewChannel=0; // flags for faster testing, if new channel starts | |
96 | ||
97 | void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq | |
98 | void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0; | |
99 | ||
100 | // certain globals (were local before, but with the new timeproc I need em global) | |
101 | ||
102 | static const int f[5][2] = { { 0, 0 }, | |
103 | { 60, 0 }, | |
104 | { 115, -52 }, | |
105 | { 98, -55 }, | |
106 | { 122, -60 } }; | |
107 | int SSumR[NSSIZE]; | |
108 | int SSumL[NSSIZE]; | |
109 | int iFMod[NSSIZE]; | |
110 | int iCycle = 0; | |
111 | short * pS; | |
112 | ||
113 | int lastch=-1; // last channel processed on spu irq in timer mode | |
114 | static int lastns=0; // last ns pos | |
115 | static int iSecureStart=0; // secure start counter | |
116 | ||
117 | //////////////////////////////////////////////////////////////////////// | |
118 | // CODE AREA | |
119 | //////////////////////////////////////////////////////////////////////// | |
120 | ||
121 | // dirty inline func includes | |
122 | ||
123 | #include "reverb.c" | |
124 | #include "adsr.c" | |
125 | ||
126 | //////////////////////////////////////////////////////////////////////// | |
127 | // helpers for simple interpolation | |
128 | ||
129 | // | |
130 | // easy interpolation on upsampling, no special filter, just "Pete's common sense" tm | |
131 | // | |
132 | // instead of having n equal sample values in a row like: | |
133 | // ____ | |
134 | // |____ | |
135 | // | |
136 | // we compare the current delta change with the next delta change. | |
137 | // | |
138 | // if curr_delta is positive, | |
139 | // | |
140 | // - and next delta is smaller (or changing direction): | |
141 | // \. | |
142 | // -__ | |
143 | // | |
144 | // - and next delta significant (at least twice) bigger: | |
145 | // --_ | |
146 | // \. | |
147 | // | |
148 | // - and next delta is nearly same: | |
149 | // \. | |
150 | // \. | |
151 | // | |
152 | // | |
153 | // if curr_delta is negative, | |
154 | // | |
155 | // - and next delta is smaller (or changing direction): | |
156 | // _-- | |
157 | // / | |
158 | // | |
159 | // - and next delta significant (at least twice) bigger: | |
160 | // / | |
161 | // __- | |
162 | // | |
163 | // - and next delta is nearly same: | |
164 | // / | |
165 | // / | |
166 | // | |
167 | ||
168 | ||
169 | INLINE void InterpolateUp(int ch) | |
170 | { | |
171 | if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass | |
172 | { | |
173 | const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val | |
174 | const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :) | |
175 | ||
176 | s_chan[ch].SB[32]=0; | |
177 | ||
178 | if(id1>0) // curr delta positive | |
179 | { | |
180 | if(id2<id1) | |
181 | {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;} | |
182 | else | |
183 | if(id2<(id1<<1)) | |
184 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L; | |
185 | else | |
186 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L; | |
187 | } | |
188 | else // curr delta negative | |
189 | { | |
190 | if(id2>id1) | |
191 | {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;} | |
192 | else | |
193 | if(id2>(id1<<1)) | |
194 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L; | |
195 | else | |
196 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L; | |
197 | } | |
198 | } | |
199 | else | |
200 | if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass | |
201 | { | |
202 | s_chan[ch].SB[32]=0; | |
203 | ||
204 | s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L; | |
205 | if(s_chan[ch].sinc<=0x8000) | |
206 | s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1)); | |
207 | else s_chan[ch].SB[29]+=s_chan[ch].SB[28]; | |
208 | } | |
209 | else // no flags? add bigger val (if possible), calc smaller step, set flag1 | |
210 | s_chan[ch].SB[29]+=s_chan[ch].SB[28]; | |
211 | } | |
212 | ||
213 | // | |
214 | // even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm | |
215 | // | |
216 | ||
217 | INLINE void InterpolateDown(int ch) | |
218 | { | |
219 | if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val? | |
220 | { | |
221 | s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight | |
222 | if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals? | |
223 | s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight | |
224 | } | |
225 | } | |
226 | ||
227 | //////////////////////////////////////////////////////////////////////// | |
228 | // helpers for gauss interpolation | |
229 | ||
230 | #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos]) | |
231 | #define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3]) | |
232 | ||
233 | #include "gauss_i.h" | |
234 | ||
235 | //////////////////////////////////////////////////////////////////////// | |
236 | ||
237 | #include "xa.c" | |
238 | ||
239 | //////////////////////////////////////////////////////////////////////// | |
240 | // START SOUND... called by main thread to setup a new sound on a channel | |
241 | //////////////////////////////////////////////////////////////////////// | |
242 | ||
243 | INLINE void StartSound(int ch) | |
244 | { | |
245 | StartADSR(ch); | |
246 | StartREVERB(ch); | |
247 | ||
b00afb77 | 248 | // fussy timing issues - do in VoiceOn |
249 | //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start | |
250 | //s_chan[ch].bStop=0; | |
251 | //s_chan[ch].bOn=1; | |
ef79bbde P |
252 | |
253 | s_chan[ch].s_1=0; // init mixing vars | |
254 | s_chan[ch].s_2=0; | |
255 | s_chan[ch].iSBPos=28; | |
256 | ||
257 | s_chan[ch].bNew=0; // init channel flags | |
ef79bbde P |
258 | |
259 | s_chan[ch].SB[29]=0; // init our interpolation helpers | |
260 | s_chan[ch].SB[30]=0; | |
261 | ||
262 | if(iUseInterpolation>=2) // gauss interpolation? | |
263 | {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding | |
264 | else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding | |
265 | ||
266 | dwNewChannel&=~(1<<ch); // clear new channel bit | |
267 | } | |
268 | ||
269 | //////////////////////////////////////////////////////////////////////// | |
270 | // ALL KIND OF HELPERS | |
271 | //////////////////////////////////////////////////////////////////////// | |
272 | ||
273 | INLINE void VoiceChangeFrequency(int ch) | |
274 | { | |
275 | s_chan[ch].iUsedFreq=s_chan[ch].iActFreq; // -> take it and calc steps | |
276 | s_chan[ch].sinc=s_chan[ch].iRawPitch<<4; | |
277 | if(!s_chan[ch].sinc) s_chan[ch].sinc=1; | |
278 | if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simle imterpolation mode: set flag | |
279 | } | |
280 | ||
281 | //////////////////////////////////////////////////////////////////////// | |
282 | ||
283 | INLINE void FModChangeFrequency(int ch,int ns) | |
284 | { | |
285 | int NP=s_chan[ch].iRawPitch; | |
286 | ||
287 | NP=((32768L+iFMod[ns])*NP)/32768L; | |
288 | ||
289 | if(NP>0x3fff) NP=0x3fff; | |
290 | if(NP<0x1) NP=0x1; | |
291 | ||
292 | NP=(44100L*NP)/(4096L); // calc frequency | |
293 | ||
294 | s_chan[ch].iActFreq=NP; | |
295 | s_chan[ch].iUsedFreq=NP; | |
296 | s_chan[ch].sinc=(((NP/10)<<16)/4410); | |
297 | if(!s_chan[ch].sinc) s_chan[ch].sinc=1; | |
298 | if(iUseInterpolation==1) // freq change in simple interpolation mode | |
299 | s_chan[ch].SB[32]=1; | |
300 | iFMod[ns]=0; | |
301 | } | |
302 | ||
303 | //////////////////////////////////////////////////////////////////////// | |
304 | ||
305 | // noise handler... just produces some noise data | |
306 | // surely wrong... and no noise frequency (spuCtrl&0x3f00) will be used... | |
307 | // and sometimes the noise will be used as fmod modulation... pfff | |
308 | ||
309 | INLINE int iGetNoiseVal(int ch) | |
310 | { | |
311 | int fa; | |
312 | ||
313 | if((dwNoiseVal<<=1)&0x80000000L) | |
314 | { | |
315 | dwNoiseVal^=0x0040001L; | |
316 | fa=((dwNoiseVal>>2)&0x7fff); | |
317 | fa=-fa; | |
318 | } | |
319 | else fa=(dwNoiseVal>>2)&0x7fff; | |
320 | ||
321 | // mmm... depending on the noise freq we allow bigger/smaller changes to the previous val | |
322 | fa=s_chan[ch].iOldNoise+((fa-s_chan[ch].iOldNoise)/((0x001f-((spuCtrl&0x3f00)>>9))+1)); | |
323 | if(fa>32767L) fa=32767L; | |
324 | if(fa<-32767L) fa=-32767L; | |
325 | s_chan[ch].iOldNoise=fa; | |
326 | ||
327 | if(iUseInterpolation<2) // no gauss/cubic interpolation? | |
328 | s_chan[ch].SB[29] = fa; // -> store noise val in "current sample" slot | |
329 | return fa; | |
330 | } | |
331 | ||
332 | //////////////////////////////////////////////////////////////////////// | |
333 | ||
334 | INLINE void StoreInterpolationVal(int ch,int fa) | |
335 | { | |
336 | if(s_chan[ch].bFMod==2) // fmod freq channel | |
337 | s_chan[ch].SB[29]=fa; | |
338 | else | |
339 | { | |
340 | if((spuCtrl&0x4000)==0) fa=0; // muted? | |
341 | else // else adjust | |
342 | { | |
343 | if(fa>32767L) fa=32767L; | |
344 | if(fa<-32767L) fa=-32767L; | |
345 | } | |
346 | ||
347 | if(iUseInterpolation>=2) // gauss/cubic interpolation | |
348 | { | |
349 | int gpos = s_chan[ch].SB[28]; | |
350 | gval0 = fa; | |
351 | gpos = (gpos+1) & 3; | |
352 | s_chan[ch].SB[28] = gpos; | |
353 | } | |
354 | else | |
355 | if(iUseInterpolation==1) // simple interpolation | |
356 | { | |
357 | s_chan[ch].SB[28] = 0; | |
358 | 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' | |
359 | s_chan[ch].SB[30] = s_chan[ch].SB[31]; | |
360 | s_chan[ch].SB[31] = fa; | |
361 | s_chan[ch].SB[32] = 1; // -> flag: calc new interolation | |
362 | } | |
363 | else s_chan[ch].SB[29]=fa; // no interpolation | |
364 | } | |
365 | } | |
366 | ||
367 | //////////////////////////////////////////////////////////////////////// | |
368 | ||
369 | INLINE int iGetInterpolationVal(int ch) | |
370 | { | |
371 | int fa; | |
372 | ||
373 | if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29]; | |
374 | ||
375 | switch(iUseInterpolation) | |
376 | { | |
377 | //--------------------------------------------------// | |
378 | case 3: // cubic interpolation | |
379 | { | |
380 | long xd;int gpos; | |
381 | xd = ((s_chan[ch].spos) >> 1)+1; | |
382 | gpos = s_chan[ch].SB[28]; | |
383 | ||
384 | fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0; | |
385 | fa *= (xd - (2<<15)) / 6; | |
386 | fa >>= 15; | |
387 | fa += gval(2) - gval(1) - gval(1) + gval0; | |
388 | fa *= (xd - (1<<15)) >> 1; | |
389 | fa >>= 15; | |
390 | fa += gval(1) - gval0; | |
391 | fa *= xd; | |
392 | fa >>= 15; | |
393 | fa = fa + gval0; | |
394 | ||
395 | } break; | |
396 | //--------------------------------------------------// | |
397 | case 2: // gauss interpolation | |
398 | { | |
399 | int vl, vr;int gpos; | |
400 | vl = (s_chan[ch].spos >> 6) & ~3; | |
401 | gpos = s_chan[ch].SB[28]; | |
402 | vr=(gauss[vl]*gval0)&~2047; | |
403 | vr+=(gauss[vl+1]*gval(1))&~2047; | |
404 | vr+=(gauss[vl+2]*gval(2))&~2047; | |
405 | vr+=(gauss[vl+3]*gval(3))&~2047; | |
406 | fa = vr>>11; | |
407 | } break; | |
408 | //--------------------------------------------------// | |
409 | case 1: // simple interpolation | |
410 | { | |
411 | if(s_chan[ch].sinc<0x10000L) // -> upsampling? | |
412 | InterpolateUp(ch); // --> interpolate up | |
413 | else InterpolateDown(ch); // --> else down | |
414 | fa=s_chan[ch].SB[29]; | |
415 | } break; | |
416 | //--------------------------------------------------// | |
417 | default: // no interpolation | |
418 | { | |
419 | fa=s_chan[ch].SB[29]; | |
420 | } break; | |
421 | //--------------------------------------------------// | |
422 | } | |
423 | ||
424 | return fa; | |
425 | } | |
426 | ||
427 | //////////////////////////////////////////////////////////////////////// | |
428 | // MAIN SPU FUNCTION | |
429 | // here is the main job handler... thread, timer or direct func call | |
430 | // basically the whole sound processing is done in this fat func! | |
431 | //////////////////////////////////////////////////////////////////////// | |
432 | ||
433 | // 5 ms waiting phase, if buffer is full and no new sound has to get started | |
434 | // .. can be made smaller (smallest val: 1 ms), but bigger waits give | |
435 | // better performance | |
436 | ||
437 | #define PAUSE_W 5 | |
438 | #define PAUSE_L 5000 | |
439 | ||
440 | //////////////////////////////////////////////////////////////////////// | |
441 | ||
442 | static void *MAINThread(void *arg) | |
443 | { | |
444 | int s_1,s_2,fa,ns; | |
cfe71c00 | 445 | #if !defined(_MACOSX) && !defined(__arm__) |
ef79bbde P |
446 | int voldiv = iVolume; |
447 | #else | |
448 | const int voldiv = 2; | |
449 | #endif | |
450 | unsigned char * start;unsigned int nSample; | |
451 | int ch,predict_nr,shift_factor,flags,d,s; | |
452 | int bIRQReturn=0; | |
453 | ||
454 | while(!bEndThread) // until we are shutting down | |
455 | { | |
456 | // ok, at the beginning we are looking if there is | |
457 | // enuff free place in the dsound/oss buffer to | |
458 | // fill in new data, or if there is a new channel to start. | |
459 | // if not, we wait (thread) or return (timer/spuasync) | |
460 | // until enuff free place is available/a new channel gets | |
461 | // started | |
462 | ||
463 | if(dwNewChannel) // new channel should start immedately? | |
464 | { // (at least one bit 0 ... MAXCHANNEL is set?) | |
465 | iSecureStart++; // -> set iSecure | |
466 | 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) | |
467 | } | |
468 | else iSecureStart=0; // 0: no new channel should start | |
469 | ||
470 | while(!iSecureStart && !bEndThread && // no new start? no thread end? | |
471 | (SoundGetBytesBuffered()>TESTSIZE)) // and still enuff data in sound buffer? | |
472 | { | |
473 | iSecureStart=0; // reset secure | |
474 | ||
475 | if(iUseTimer) return 0; // linux no-thread mode? bye | |
476 | usleep(PAUSE_L); // else sleep for x ms (linux) | |
477 | ||
478 | if(dwNewChannel) iSecureStart=1; // if a new channel kicks in (or, of course, sound buffer runs low), we will leave the loop | |
479 | } | |
480 | ||
481 | //--------------------------------------------------// continue from irq handling in timer mode? | |
482 | ||
483 | if(lastch>=0) // will be -1 if no continue is pending | |
484 | { | |
485 | ch=lastch; ns=lastns; lastch=-1; // -> setup all kind of vars to continue | |
486 | goto GOON; // -> directly jump to the continue point | |
487 | } | |
488 | ||
489 | //--------------------------------------------------// | |
490 | //- main channel loop -// | |
491 | //--------------------------------------------------// | |
492 | { | |
493 | for(ch=0;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel | |
494 | { | |
495 | if(s_chan[ch].bNew) StartSound(ch); // start new sound | |
496 | if(!s_chan[ch].bOn) continue; // channel not playing? next | |
497 | ||
498 | if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency? | |
499 | VoiceChangeFrequency(ch); | |
500 | ||
501 | ns=0; | |
502 | while(ns<NSSIZE) // loop until 1 ms of data is reached | |
503 | { | |
504 | if(s_chan[ch].bFMod==1 && iFMod[ns]) // fmod freq channel | |
505 | FModChangeFrequency(ch,ns); | |
506 | ||
507 | while(s_chan[ch].spos>=0x10000L) | |
508 | { | |
509 | if(s_chan[ch].iSBPos==28) // 28 reached? | |
510 | { | |
511 | start=s_chan[ch].pCurr; // set up the current pos | |
512 | ||
513 | if (start == (unsigned char*)-1) // special "stop" sign | |
514 | { | |
515 | s_chan[ch].bOn=0; // -> turn everything off | |
516 | s_chan[ch].ADSRX.lVolume=0; | |
517 | s_chan[ch].ADSRX.EnvelopeVol=0; | |
518 | goto ENDX; // -> and done for this channel | |
519 | } | |
520 | ||
521 | s_chan[ch].iSBPos=0; | |
522 | ||
523 | //////////////////////////////////////////// spu irq handler here? mmm... do it later | |
524 | ||
525 | s_1=s_chan[ch].s_1; | |
526 | s_2=s_chan[ch].s_2; | |
527 | ||
528 | predict_nr=(int)*start;start++; | |
529 | shift_factor=predict_nr&0xf; | |
530 | predict_nr >>= 4; | |
531 | flags=(int)*start;start++; | |
532 | ||
533 | // -------------------------------------- // | |
534 | ||
535 | for (nSample=0;nSample<28;start++) | |
536 | { | |
537 | d=(int)*start; | |
538 | s=((d&0xf)<<12); | |
539 | if(s&0x8000) s|=0xffff0000; | |
540 | ||
541 | fa=(s >> shift_factor); | |
542 | fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6); | |
543 | s_2=s_1;s_1=fa; | |
544 | s=((d & 0xf0) << 8); | |
545 | ||
546 | s_chan[ch].SB[nSample++]=fa; | |
547 | ||
548 | if(s&0x8000) s|=0xffff0000; | |
549 | fa=(s>>shift_factor); | |
550 | fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6); | |
551 | s_2=s_1;s_1=fa; | |
552 | ||
553 | s_chan[ch].SB[nSample++]=fa; | |
554 | } | |
555 | ||
556 | //////////////////////////////////////////// irq check | |
557 | ||
558 | if(irqCallback && (spuCtrl&0x40)) // some callback and irq active? | |
559 | { | |
560 | if((pSpuIrq > start-16 && // irq address reached? | |
561 | pSpuIrq <= start) || | |
562 | ((flags&1) && // special: irq on looping addr, when stop/loop flag is set | |
563 | (pSpuIrq > s_chan[ch].pLoop-16 && | |
564 | pSpuIrq <= s_chan[ch].pLoop))) | |
565 | { | |
566 | s_chan[ch].iIrqDone=1; // -> debug flag | |
567 | irqCallback(); // -> call main emu | |
568 | ||
569 | if(iSPUIRQWait) // -> option: wait after irq for main emu | |
570 | { | |
571 | iSpuAsyncWait=1; | |
572 | bIRQReturn=1; | |
573 | } | |
574 | } | |
575 | } | |
576 | ||
577 | //////////////////////////////////////////// flag handler | |
578 | ||
579 | if((flags&4) && (!s_chan[ch].bIgnoreLoop)) | |
580 | s_chan[ch].pLoop=start-16; // loop adress | |
581 | ||
582 | if(flags&1) // 1: stop/loop | |
583 | { | |
584 | // We play this block out first... | |
585 | //if(!(flags&2)) // 1+2: do loop... otherwise: stop | |
586 | if(flags!=3 || s_chan[ch].pLoop==NULL) // PETE: if we don't check exactly for 3, loop hang ups will happen (DQ4, for example) | |
587 | { // and checking if pLoop is set avoids crashes, yeah | |
588 | start = (unsigned char*)-1; | |
589 | } | |
590 | else | |
591 | { | |
592 | start = s_chan[ch].pLoop; | |
593 | } | |
594 | } | |
595 | ||
596 | s_chan[ch].pCurr=start; // store values for next cycle | |
597 | s_chan[ch].s_1=s_1; | |
598 | s_chan[ch].s_2=s_2; | |
599 | ||
600 | if(bIRQReturn) // special return for "spu irq - wait for cpu action" | |
601 | { | |
602 | bIRQReturn=0; | |
603 | if(iUseTimer!=2) | |
604 | { | |
605 | DWORD dwWatchTime=timeGetTime_spu()+2500; | |
606 | ||
607 | while(iSpuAsyncWait && !bEndThread && | |
608 | timeGetTime_spu()<dwWatchTime) | |
609 | usleep(1000L); | |
610 | } | |
611 | else | |
612 | { | |
613 | lastch=ch; | |
614 | lastns=ns; | |
615 | ||
616 | return 0; | |
617 | } | |
618 | } | |
619 | ||
620 | GOON: ; | |
621 | } | |
622 | ||
623 | fa=s_chan[ch].SB[s_chan[ch].iSBPos++]; // get sample data | |
624 | ||
625 | StoreInterpolationVal(ch,fa); // store val for later interpolation | |
626 | ||
627 | s_chan[ch].spos -= 0x10000L; | |
628 | } | |
629 | ||
630 | if(s_chan[ch].bNoise) | |
631 | fa=iGetNoiseVal(ch); // get noise val | |
632 | else fa=iGetInterpolationVal(ch); // get sample val | |
633 | ||
634 | s_chan[ch].sval = (MixADSR(ch) * fa) / 1023; // mix adsr | |
635 | ||
636 | if(s_chan[ch].bFMod==2) // fmod freq channel | |
637 | iFMod[ns]=s_chan[ch].sval; // -> store 1T sample data, use that to do fmod on next channel | |
638 | else // no fmod freq channel | |
639 | { | |
640 | ////////////////////////////////////////////// | |
641 | // ok, left/right sound volume (psx volume goes from 0 ... 0x3fff) | |
642 | ||
643 | if(s_chan[ch].iMute) | |
644 | s_chan[ch].sval=0; // debug mute | |
645 | else | |
646 | { | |
647 | SSumL[ns]+=(s_chan[ch].sval*s_chan[ch].iLeftVolume)/0x4000L; | |
648 | SSumR[ns]+=(s_chan[ch].sval*s_chan[ch].iRightVolume)/0x4000L; | |
649 | } | |
650 | ||
651 | ////////////////////////////////////////////// | |
652 | // now let us store sound data for reverb | |
653 | ||
654 | if(s_chan[ch].bRVBActive) StoreREVERB(ch,ns); | |
655 | } | |
656 | ||
657 | //////////////////////////////////////////////// | |
658 | // ok, go on until 1 ms data of this channel is collected | |
659 | ||
660 | ns++; | |
661 | s_chan[ch].spos += s_chan[ch].sinc; | |
662 | ||
663 | } | |
664 | ENDX: ; | |
665 | } | |
666 | } | |
667 | ||
668 | //---------------------------------------------------// | |
669 | //- here we have another 1 ms of sound data | |
670 | //---------------------------------------------------// | |
671 | // mix XA infos (if any) | |
672 | ||
673 | MixXA(); | |
674 | ||
675 | /////////////////////////////////////////////////////// | |
676 | // mix all channels (including reverb) into one buffer | |
677 | ||
678 | if(iDisStereo) // no stereo? | |
679 | { | |
680 | int dl, dr; | |
681 | for (ns = 0; ns < NSSIZE; ns++) | |
682 | { | |
683 | SSumL[ns] += MixREVERBLeft(ns); | |
684 | ||
685 | dl = SSumL[ns] / voldiv; SSumL[ns] = 0; | |
686 | if (dl < -32767) dl = -32767; if (dl > 32767) dl = 32767; | |
687 | ||
688 | SSumR[ns] += MixREVERBRight(); | |
689 | ||
690 | dr = SSumR[ns] / voldiv; SSumR[ns] = 0; | |
691 | if (dr < -32767) dr = -32767; if (dr > 32767) dr = 32767; | |
692 | *pS++ = (dl + dr) / 2; | |
693 | } | |
694 | } | |
695 | else // stereo: | |
696 | for (ns = 0; ns < NSSIZE; ns++) | |
697 | { | |
698 | SSumL[ns] += MixREVERBLeft(ns); | |
699 | ||
700 | d = SSumL[ns] / voldiv; SSumL[ns] = 0; | |
701 | if (d < -32767) d = -32767; if (d > 32767) d = 32767; | |
702 | *pS++ = d; | |
703 | ||
704 | SSumR[ns] += MixREVERBRight(); | |
705 | ||
706 | d = SSumR[ns] / voldiv; SSumR[ns] = 0; | |
707 | if(d < -32767) d = -32767; if(d > 32767) d = 32767; | |
708 | *pS++ = d; | |
709 | } | |
710 | ||
711 | ////////////////////////////////////////////////////// | |
712 | // special irq handling in the decode buffers (0x0000-0x1000) | |
713 | // we know: | |
714 | // the decode buffers are located in spu memory in the following way: | |
715 | // 0x0000-0x03ff CD audio left | |
716 | // 0x0400-0x07ff CD audio right | |
717 | // 0x0800-0x0bff Voice 1 | |
718 | // 0x0c00-0x0fff Voice 3 | |
719 | // and decoded data is 16 bit for one sample | |
720 | // we assume: | |
721 | // even if voices 1/3 are off or no cd audio is playing, the internal | |
722 | // play positions will move on and wrap after 0x400 bytes. | |
723 | // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and | |
724 | // increase this pointer on each sample by 2 bytes. If this pointer | |
725 | // (or 0x400 offsets of this pointer) hits the spuirq address, we generate | |
726 | // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here | |
727 | // in some of Peops timer modes. So: we ignore this option here (for now). | |
728 | ||
729 | if(pMixIrq && irqCallback) | |
730 | { | |
731 | for(ns=0;ns<NSSIZE;ns++) | |
732 | { | |
733 | if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000) | |
734 | { | |
735 | for(ch=0;ch<4;ch++) | |
736 | { | |
737 | if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2) | |
738 | {irqCallback();s_chan[ch].iIrqDone=1;} | |
739 | } | |
740 | } | |
741 | pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC; | |
742 | } | |
743 | } | |
744 | ||
745 | InitREVERB(); | |
746 | ||
747 | // feed the sound | |
748 | // wanna have around 1/60 sec (16.666 ms) updates | |
749 | if (iCycle++ > 16) | |
750 | { | |
751 | SoundFeedStreamData((unsigned char *)pSpuBuffer, | |
752 | ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer)); | |
753 | pS = (short *)pSpuBuffer; | |
754 | iCycle = 0; | |
755 | } | |
756 | } | |
757 | ||
758 | // end of big main loop... | |
759 | ||
760 | bThreadEnded = 1; | |
761 | ||
762 | return 0; | |
763 | } | |
764 | ||
765 | // SPU ASYNC... even newer epsxe func | |
766 | // 1 time every 'cycle' cycles... harhar | |
767 | ||
768 | void CALLBACK SPUasync(unsigned long cycle) | |
769 | { | |
770 | if(iSpuAsyncWait) | |
771 | { | |
772 | iSpuAsyncWait++; | |
773 | if(iSpuAsyncWait<=64) return; | |
774 | iSpuAsyncWait=0; | |
775 | } | |
776 | ||
777 | if(iUseTimer==2) // special mode, only used in Linux by this spu (or if you enable the experimental Windows mode) | |
778 | { | |
779 | if(!bSpuInit) return; // -> no init, no call | |
780 | ||
781 | MAINThread(0); // -> linux high-compat mode | |
782 | } | |
783 | } | |
784 | ||
785 | // SPU UPDATE... new epsxe func | |
786 | // 1 time every 32 hsync lines | |
787 | // (312/32)x50 in pal | |
788 | // (262/32)x60 in ntsc | |
789 | ||
790 | // since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will | |
791 | // leave that func in the linux port, until epsxe linux is using | |
792 | // the async function as well | |
793 | ||
794 | void CALLBACK SPUupdate(void) | |
795 | { | |
796 | SPUasync(0); | |
797 | } | |
798 | ||
799 | // XA AUDIO | |
800 | ||
801 | void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap) | |
802 | { | |
803 | if(!xap) return; | |
804 | if(!xap->freq) return; // no xa freq ? bye | |
805 | ||
806 | FeedXA(xap); // call main XA feeder | |
807 | } | |
808 | ||
809 | // CDDA AUDIO | |
810 | void CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes) | |
811 | { | |
812 | if (!pcm) return; | |
813 | if (nbytes<=0) return; | |
814 | ||
815 | FeedCDDA((unsigned char *)pcm, nbytes); | |
816 | } | |
817 | ||
818 | // SETUPTIMER: init of certain buffers and threads/timers | |
819 | void SetupTimer(void) | |
820 | { | |
821 | memset(SSumR,0,NSSIZE*sizeof(int)); // init some mixing buffers | |
822 | memset(SSumL,0,NSSIZE*sizeof(int)); | |
823 | memset(iFMod,0,NSSIZE*sizeof(int)); | |
824 | pS=(short *)pSpuBuffer; // setup soundbuffer pointer | |
825 | ||
826 | bEndThread=0; // init thread vars | |
827 | bThreadEnded=0; | |
828 | bSpuInit=1; // flag: we are inited | |
829 | ||
830 | if(!iUseTimer) // linux: use thread | |
831 | { | |
832 | pthread_create(&thread, NULL, MAINThread, NULL); | |
833 | } | |
834 | } | |
835 | ||
836 | // REMOVETIMER: kill threads/timers | |
837 | void RemoveTimer(void) | |
838 | { | |
839 | bEndThread=1; // raise flag to end thread | |
840 | ||
841 | if(!iUseTimer) // linux tread? | |
842 | { | |
843 | int i=0; | |
844 | while(!bThreadEnded && i<2000) {usleep(1000L);i++;} // -> wait until thread has ended | |
845 | if(thread!=(pthread_t)-1) {pthread_cancel(thread);thread=(pthread_t)-1;} // -> cancel thread anyway | |
846 | } | |
847 | ||
848 | bThreadEnded=0; // no more spu is running | |
849 | bSpuInit=0; | |
850 | } | |
851 | ||
852 | // SETUPSTREAMS: init most of the spu buffers | |
853 | void SetupStreams(void) | |
854 | { | |
855 | int i; | |
856 | ||
857 | pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer | |
858 | ||
859 | if(iUseReverb==1) i=88200*2; | |
860 | else i=NSSIZE*2; | |
861 | ||
862 | sRVBStart = (int *)malloc(i*4); // alloc reverb buffer | |
863 | memset(sRVBStart,0,i*4); | |
864 | sRVBEnd = sRVBStart + i; | |
865 | sRVBPlay = sRVBStart; | |
866 | ||
867 | XAStart = // alloc xa buffer | |
868 | (uint32_t *)malloc(44100 * sizeof(uint32_t)); | |
869 | XAEnd = XAStart + 44100; | |
870 | XAPlay = XAStart; | |
871 | XAFeed = XAStart; | |
872 | ||
873 | CDDAStart = // alloc cdda buffer | |
874 | (uint32_t *)malloc(16384 * sizeof(uint32_t)); | |
875 | CDDAEnd = CDDAStart + 16384; | |
876 | CDDAPlay = CDDAStart; | |
877 | CDDAFeed = CDDAStart + 1; | |
878 | ||
879 | for(i=0;i<MAXCHAN;i++) // loop sound channels | |
880 | { | |
881 | // we don't use mutex sync... not needed, would only | |
882 | // slow us down: | |
883 | // s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL); | |
884 | s_chan[i].ADSRX.SustainLevel = 1024; // -> init sustain | |
885 | s_chan[i].iMute=0; | |
886 | s_chan[i].iIrqDone=0; | |
887 | s_chan[i].pLoop=spuMemC; | |
888 | s_chan[i].pStart=spuMemC; | |
889 | s_chan[i].pCurr=spuMemC; | |
890 | } | |
891 | ||
892 | pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address | |
893 | } | |
894 | ||
895 | // REMOVESTREAMS: free most buffer | |
896 | void RemoveStreams(void) | |
897 | { | |
898 | free(pSpuBuffer); // free mixing buffer | |
899 | pSpuBuffer = NULL; | |
900 | free(sRVBStart); // free reverb buffer | |
901 | sRVBStart = NULL; | |
902 | free(XAStart); // free XA buffer | |
903 | XAStart = NULL; | |
904 | free(CDDAStart); // free CDDA buffer | |
905 | CDDAStart = NULL; | |
906 | } | |
907 | ||
908 | // INIT/EXIT STUFF | |
909 | ||
910 | // SPUINIT: this func will be called first by the main emu | |
911 | long CALLBACK SPUinit(void) | |
912 | { | |
913 | spuMemC = (unsigned char *)spuMem; // just small setup | |
914 | memset((void *)&rvb, 0, sizeof(REVERBInfo)); | |
915 | InitADSR(); | |
916 | ||
917 | iVolume = 3; | |
918 | iReverbOff = -1; | |
919 | spuIrq = 0; | |
920 | spuAddr = 0xffffffff; | |
921 | bEndThread = 0; | |
922 | bThreadEnded = 0; | |
923 | spuMemC = (unsigned char *)spuMem; | |
924 | pMixIrq = 0; | |
925 | memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN)); | |
926 | pSpuIrq = 0; | |
367b1b93 | 927 | iSPUIRQWait = 0; |
ef79bbde P |
928 | lastch = -1; |
929 | ||
d7296e10 | 930 | //ReadConfigSPU(); // read user stuff |
ef79bbde P |
931 | SetupStreams(); // prepare streaming |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
936 | // SPUOPEN: called by main emu after init | |
937 | long CALLBACK SPUopen(void) | |
938 | { | |
939 | if (bSPUIsOpen) return 0; // security for some stupid main emus | |
940 | ||
941 | SetupSound(); // setup sound (before init!) | |
942 | SetupTimer(); // timer for feeding data | |
943 | ||
944 | bSPUIsOpen = 1; | |
945 | ||
946 | return PSE_SPU_ERR_SUCCESS; | |
947 | } | |
948 | ||
949 | // SPUCLOSE: called before shutdown | |
950 | long CALLBACK SPUclose(void) | |
951 | { | |
952 | if (!bSPUIsOpen) return 0; // some security | |
953 | ||
954 | bSPUIsOpen = 0; // no more open | |
955 | ||
956 | RemoveTimer(); // no more feeding | |
957 | RemoveSound(); // no more sound handling | |
958 | ||
959 | return 0; | |
960 | } | |
961 | ||
962 | // SPUSHUTDOWN: called by main emu on final exit | |
963 | long CALLBACK SPUshutdown(void) | |
964 | { | |
965 | SPUclose(); | |
966 | RemoveStreams(); // no more streaming | |
967 | ||
968 | return 0; | |
969 | } | |
970 | ||
971 | // SPUTEST: we don't test, we are always fine ;) | |
972 | long CALLBACK SPUtest(void) | |
973 | { | |
974 | return 0; | |
975 | } | |
976 | ||
977 | // SPUCONFIGURE: call config dialog | |
978 | long CALLBACK SPUconfigure(void) | |
979 | { | |
980 | #ifdef _MACOSX | |
981 | DoConfiguration(); | |
982 | #else | |
ee849648 | 983 | // StartCfgTool("CFG"); |
ef79bbde P |
984 | #endif |
985 | return 0; | |
986 | } | |
987 | ||
988 | // SPUABOUT: show about window | |
989 | void CALLBACK SPUabout(void) | |
990 | { | |
991 | #ifdef _MACOSX | |
992 | DoAbout(); | |
993 | #else | |
ee849648 | 994 | // StartCfgTool("ABOUT"); |
ef79bbde P |
995 | #endif |
996 | } | |
997 | ||
998 | // SETUP CALLBACKS | |
999 | // this functions will be called once, | |
1000 | // passes a callback that should be called on SPU-IRQ/cdda volume change | |
1001 | void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void)) | |
1002 | { | |
1003 | irqCallback = callback; | |
1004 | } | |
1005 | ||
1006 | void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short)) | |
1007 | { | |
1008 | cddavCallback = CDDAVcallback; | |
1009 | } | |
1010 | ||
1011 | // COMMON PLUGIN INFO FUNCS | |
e906c010 | 1012 | /* |
ef79bbde P |
1013 | char * CALLBACK PSEgetLibName(void) |
1014 | { | |
1015 | return _(libraryName); | |
1016 | } | |
1017 | ||
1018 | unsigned long CALLBACK PSEgetLibType(void) | |
1019 | { | |
1020 | return PSE_LT_SPU; | |
1021 | } | |
1022 | ||
1023 | unsigned long CALLBACK PSEgetLibVersion(void) | |
1024 | { | |
1025 | return (1 << 16) | (6 << 8); | |
1026 | } | |
1027 | ||
1028 | char * SPUgetLibInfos(void) | |
1029 | { | |
1030 | return _(libraryInfo); | |
1031 | } | |
e906c010 | 1032 | */ |