Commit | Line | Data |
---|---|---|
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 | ||
6d866bb7 | 37 | /* |
ef79bbde P |
38 | #if defined (USEMACOSX) |
39 | static char * libraryName = N_("Mac OS X Sound"); | |
40 | #elif defined (USEALSA) | |
41 | static char * libraryName = N_("ALSA Sound"); | |
42 | #elif defined (USEOSS) | |
43 | static char * libraryName = N_("OSS Sound"); | |
44 | #elif defined (USESDL) | |
45 | static char * libraryName = N_("SDL Sound"); | |
46 | #elif defined (USEPULSEAUDIO) | |
47 | static char * libraryName = N_("PulseAudio Sound"); | |
48 | #else | |
49 | static char * libraryName = N_("NULL Sound"); | |
50 | #endif | |
51 | ||
52 | 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 | 53 | */ |
ef79bbde P |
54 | |
55 | // globals | |
56 | ||
57 | // psx buffer / addresses | |
58 | ||
59 | unsigned short regArea[10000]; | |
60 | unsigned short spuMem[256*1024]; | |
61 | unsigned char * spuMemC; | |
62 | unsigned char * pSpuIrq=0; | |
63 | unsigned char * pSpuBuffer; | |
64 | unsigned char * pMixIrq=0; | |
65 | ||
66 | // user settings | |
67 | ||
68 | int iVolume=3; | |
69 | int iXAPitch=1; | |
70 | int iUseTimer=2; | |
71 | int iSPUIRQWait=1; | |
72 | int iDebugMode=0; | |
73 | int iRecordMode=0; | |
74 | int iUseReverb=2; | |
75 | int iUseInterpolation=2; | |
ef79bbde P |
76 | |
77 | // MAIN infos struct for each channel | |
78 | ||
79 | SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling) | |
80 | REVERBInfo rvb; | |
81 | ||
82 | unsigned long dwNoiseVal=1; // global noise generator | |
83 | int iSpuAsyncWait=0; | |
84 | ||
85 | unsigned short spuCtrl=0; // some vars to store psx reg infos | |
86 | unsigned short spuStat=0; | |
87 | unsigned short spuIrq=0; | |
88 | unsigned long spuAddr=0xffffffff; // address into spu mem | |
89 | int bEndThread=0; // thread handlers | |
90 | int bThreadEnded=0; | |
91 | int bSpuInit=0; | |
92 | int bSPUIsOpen=0; | |
93 | ||
94 | static pthread_t thread = (pthread_t)-1; // thread id (linux) | |
95 | ||
96 | unsigned long dwNewChannel=0; // flags for faster testing, if new channel starts | |
6d866bb7 | 97 | unsigned long dwChannelOn=0; |
ef79bbde P |
98 | |
99 | void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq | |
100 | void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0; | |
101 | ||
102 | // certain globals (were local before, but with the new timeproc I need em global) | |
103 | ||
6d866bb7 | 104 | static const int f[8][2] = { { 0, 0 }, |
ef79bbde P |
105 | { 60, 0 }, |
106 | { 115, -52 }, | |
107 | { 98, -55 }, | |
108 | { 122, -60 } }; | |
97ea4077 | 109 | int SSumLR[NSSIZE*2]; |
ef79bbde P |
110 | int iFMod[NSSIZE]; |
111 | int iCycle = 0; | |
112 | short * pS; | |
113 | ||
114 | int lastch=-1; // last channel processed on spu irq in timer mode | |
115 | static int lastns=0; // last ns pos | |
116 | static int iSecureStart=0; // secure start counter | |
117 | ||
118 | //////////////////////////////////////////////////////////////////////// | |
119 | // CODE AREA | |
120 | //////////////////////////////////////////////////////////////////////// | |
121 | ||
122 | // dirty inline func includes | |
123 | ||
124 | #include "reverb.c" | |
125 | #include "adsr.c" | |
126 | ||
127 | //////////////////////////////////////////////////////////////////////// | |
128 | // helpers for simple interpolation | |
129 | ||
130 | // | |
131 | // easy interpolation on upsampling, no special filter, just "Pete's common sense" tm | |
132 | // | |
133 | // instead of having n equal sample values in a row like: | |
134 | // ____ | |
135 | // |____ | |
136 | // | |
137 | // we compare the current delta change with the next delta change. | |
138 | // | |
139 | // if curr_delta is positive, | |
140 | // | |
141 | // - and next delta is smaller (or changing direction): | |
142 | // \. | |
143 | // -__ | |
144 | // | |
145 | // - and next delta significant (at least twice) bigger: | |
146 | // --_ | |
147 | // \. | |
148 | // | |
149 | // - and next delta is nearly same: | |
150 | // \. | |
151 | // \. | |
152 | // | |
153 | // | |
154 | // if curr_delta is negative, | |
155 | // | |
156 | // - and next delta is smaller (or changing direction): | |
157 | // _-- | |
158 | // / | |
159 | // | |
160 | // - and next delta significant (at least twice) bigger: | |
161 | // / | |
162 | // __- | |
163 | // | |
164 | // - and next delta is nearly same: | |
165 | // / | |
166 | // / | |
167 | // | |
168 | ||
169 | ||
170 | INLINE void InterpolateUp(int ch) | |
171 | { | |
172 | if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass | |
173 | { | |
174 | const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val | |
175 | const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :) | |
176 | ||
177 | s_chan[ch].SB[32]=0; | |
178 | ||
179 | if(id1>0) // curr delta positive | |
180 | { | |
181 | if(id2<id1) | |
182 | {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;} | |
183 | else | |
184 | if(id2<(id1<<1)) | |
185 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L; | |
186 | else | |
187 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L; | |
188 | } | |
189 | else // curr delta negative | |
190 | { | |
191 | if(id2>id1) | |
192 | {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;} | |
193 | else | |
194 | if(id2>(id1<<1)) | |
195 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L; | |
196 | else | |
197 | s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L; | |
198 | } | |
199 | } | |
200 | else | |
201 | if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass | |
202 | { | |
203 | s_chan[ch].SB[32]=0; | |
204 | ||
205 | s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L; | |
206 | if(s_chan[ch].sinc<=0x8000) | |
207 | s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1)); | |
208 | else s_chan[ch].SB[29]+=s_chan[ch].SB[28]; | |
209 | } | |
210 | else // no flags? add bigger val (if possible), calc smaller step, set flag1 | |
211 | s_chan[ch].SB[29]+=s_chan[ch].SB[28]; | |
212 | } | |
213 | ||
214 | // | |
215 | // even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm | |
216 | // | |
217 | ||
218 | INLINE void InterpolateDown(int ch) | |
219 | { | |
220 | if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val? | |
221 | { | |
222 | s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight | |
223 | if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals? | |
224 | s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight | |
225 | } | |
226 | } | |
227 | ||
228 | //////////////////////////////////////////////////////////////////////// | |
229 | // helpers for gauss interpolation | |
230 | ||
231 | #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos]) | |
232 | #define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3]) | |
233 | ||
234 | #include "gauss_i.h" | |
235 | ||
236 | //////////////////////////////////////////////////////////////////////// | |
237 | ||
238 | #include "xa.c" | |
239 | ||
240 | //////////////////////////////////////////////////////////////////////// | |
241 | // START SOUND... called by main thread to setup a new sound on a channel | |
242 | //////////////////////////////////////////////////////////////////////// | |
243 | ||
244 | INLINE void StartSound(int ch) | |
245 | { | |
246 | StartADSR(ch); | |
247 | StartREVERB(ch); | |
248 | ||
b00afb77 | 249 | // fussy timing issues - do in VoiceOn |
250 | //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start | |
251 | //s_chan[ch].bStop=0; | |
252 | //s_chan[ch].bOn=1; | |
ef79bbde P |
253 | |
254 | s_chan[ch].s_1=0; // init mixing vars | |
255 | s_chan[ch].s_2=0; | |
256 | s_chan[ch].iSBPos=28; | |
257 | ||
ef79bbde P |
258 | s_chan[ch].SB[29]=0; // init our interpolation helpers |
259 | s_chan[ch].SB[30]=0; | |
260 | ||
261 | if(iUseInterpolation>=2) // gauss interpolation? | |
262 | {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding | |
263 | else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding | |
264 | ||
265 | dwNewChannel&=~(1<<ch); // clear new channel bit | |
266 | } | |
267 | ||
268 | //////////////////////////////////////////////////////////////////////// | |
269 | // ALL KIND OF HELPERS | |
270 | //////////////////////////////////////////////////////////////////////// | |
271 | ||
272 | INLINE void VoiceChangeFrequency(int ch) | |
273 | { | |
274 | s_chan[ch].iUsedFreq=s_chan[ch].iActFreq; // -> take it and calc steps | |
275 | s_chan[ch].sinc=s_chan[ch].iRawPitch<<4; | |
276 | if(!s_chan[ch].sinc) s_chan[ch].sinc=1; | |
277 | if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simle imterpolation mode: set flag | |
278 | } | |
279 | ||
280 | //////////////////////////////////////////////////////////////////////// | |
281 | ||
282 | INLINE void FModChangeFrequency(int ch,int ns) | |
283 | { | |
284 | int NP=s_chan[ch].iRawPitch; | |
285 | ||
286 | NP=((32768L+iFMod[ns])*NP)/32768L; | |
287 | ||
288 | if(NP>0x3fff) NP=0x3fff; | |
289 | if(NP<0x1) NP=0x1; | |
290 | ||
291 | NP=(44100L*NP)/(4096L); // calc frequency | |
292 | ||
293 | s_chan[ch].iActFreq=NP; | |
294 | s_chan[ch].iUsedFreq=NP; | |
295 | s_chan[ch].sinc=(((NP/10)<<16)/4410); | |
296 | if(!s_chan[ch].sinc) s_chan[ch].sinc=1; | |
297 | if(iUseInterpolation==1) // freq change in simple interpolation mode | |
298 | s_chan[ch].SB[32]=1; | |
299 | iFMod[ns]=0; | |
300 | } | |
301 | ||
302 | //////////////////////////////////////////////////////////////////////// | |
303 | ||
304 | // noise handler... just produces some noise data | |
305 | // surely wrong... and no noise frequency (spuCtrl&0x3f00) will be used... | |
306 | // and sometimes the noise will be used as fmod modulation... pfff | |
307 | ||
308 | INLINE int iGetNoiseVal(int ch) | |
309 | { | |
310 | int fa; | |
311 | ||
312 | if((dwNoiseVal<<=1)&0x80000000L) | |
313 | { | |
314 | dwNoiseVal^=0x0040001L; | |
315 | fa=((dwNoiseVal>>2)&0x7fff); | |
316 | fa=-fa; | |
317 | } | |
318 | else fa=(dwNoiseVal>>2)&0x7fff; | |
319 | ||
320 | // mmm... depending on the noise freq we allow bigger/smaller changes to the previous val | |
321 | fa=s_chan[ch].iOldNoise+((fa-s_chan[ch].iOldNoise)/((0x001f-((spuCtrl&0x3f00)>>9))+1)); | |
322 | if(fa>32767L) fa=32767L; | |
323 | if(fa<-32767L) fa=-32767L; | |
324 | s_chan[ch].iOldNoise=fa; | |
325 | ||
326 | if(iUseInterpolation<2) // no gauss/cubic interpolation? | |
327 | s_chan[ch].SB[29] = fa; // -> store noise val in "current sample" slot | |
328 | return fa; | |
329 | } | |
330 | ||
331 | //////////////////////////////////////////////////////////////////////// | |
332 | ||
333 | INLINE void StoreInterpolationVal(int ch,int fa) | |
334 | { | |
335 | if(s_chan[ch].bFMod==2) // fmod freq channel | |
336 | s_chan[ch].SB[29]=fa; | |
337 | else | |
338 | { | |
339 | if((spuCtrl&0x4000)==0) fa=0; // muted? | |
340 | else // else adjust | |
341 | { | |
342 | if(fa>32767L) fa=32767L; | |
343 | if(fa<-32767L) fa=-32767L; | |
344 | } | |
345 | ||
346 | if(iUseInterpolation>=2) // gauss/cubic interpolation | |
347 | { | |
348 | int gpos = s_chan[ch].SB[28]; | |
349 | gval0 = fa; | |
350 | gpos = (gpos+1) & 3; | |
351 | s_chan[ch].SB[28] = gpos; | |
352 | } | |
353 | else | |
354 | if(iUseInterpolation==1) // simple interpolation | |
355 | { | |
356 | s_chan[ch].SB[28] = 0; | |
357 | 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' | |
358 | s_chan[ch].SB[30] = s_chan[ch].SB[31]; | |
359 | s_chan[ch].SB[31] = fa; | |
360 | s_chan[ch].SB[32] = 1; // -> flag: calc new interolation | |
361 | } | |
362 | else s_chan[ch].SB[29]=fa; // no interpolation | |
363 | } | |
364 | } | |
365 | ||
366 | //////////////////////////////////////////////////////////////////////// | |
367 | ||
368 | INLINE int iGetInterpolationVal(int ch) | |
369 | { | |
370 | int fa; | |
371 | ||
372 | if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29]; | |
373 | ||
374 | switch(iUseInterpolation) | |
375 | { | |
376 | //--------------------------------------------------// | |
377 | case 3: // cubic interpolation | |
378 | { | |
379 | long xd;int gpos; | |
380 | xd = ((s_chan[ch].spos) >> 1)+1; | |
381 | gpos = s_chan[ch].SB[28]; | |
382 | ||
383 | fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0; | |
384 | fa *= (xd - (2<<15)) / 6; | |
385 | fa >>= 15; | |
386 | fa += gval(2) - gval(1) - gval(1) + gval0; | |
387 | fa *= (xd - (1<<15)) >> 1; | |
388 | fa >>= 15; | |
389 | fa += gval(1) - gval0; | |
390 | fa *= xd; | |
391 | fa >>= 15; | |
392 | fa = fa + gval0; | |
393 | ||
394 | } break; | |
395 | //--------------------------------------------------// | |
396 | case 2: // gauss interpolation | |
397 | { | |
398 | int vl, vr;int gpos; | |
399 | vl = (s_chan[ch].spos >> 6) & ~3; | |
400 | gpos = s_chan[ch].SB[28]; | |
401 | vr=(gauss[vl]*gval0)&~2047; | |
402 | vr+=(gauss[vl+1]*gval(1))&~2047; | |
403 | vr+=(gauss[vl+2]*gval(2))&~2047; | |
404 | vr+=(gauss[vl+3]*gval(3))&~2047; | |
405 | fa = vr>>11; | |
406 | } break; | |
407 | //--------------------------------------------------// | |
408 | case 1: // simple interpolation | |
409 | { | |
410 | if(s_chan[ch].sinc<0x10000L) // -> upsampling? | |
411 | InterpolateUp(ch); // --> interpolate up | |
412 | else InterpolateDown(ch); // --> else down | |
413 | fa=s_chan[ch].SB[29]; | |
414 | } break; | |
415 | //--------------------------------------------------// | |
416 | default: // no interpolation | |
417 | { | |
418 | fa=s_chan[ch].SB[29]; | |
419 | } break; | |
420 | //--------------------------------------------------// | |
421 | } | |
422 | ||
423 | return fa; | |
424 | } | |
425 | ||
426 | //////////////////////////////////////////////////////////////////////// | |
427 | // MAIN SPU FUNCTION | |
428 | // here is the main job handler... thread, timer or direct func call | |
429 | // basically the whole sound processing is done in this fat func! | |
430 | //////////////////////////////////////////////////////////////////////// | |
431 | ||
432 | // 5 ms waiting phase, if buffer is full and no new sound has to get started | |
433 | // .. can be made smaller (smallest val: 1 ms), but bigger waits give | |
434 | // better performance | |
435 | ||
436 | #define PAUSE_W 5 | |
437 | #define PAUSE_L 5000 | |
438 | ||
439 | //////////////////////////////////////////////////////////////////////// | |
440 | ||
441 | static void *MAINThread(void *arg) | |
442 | { | |
8680e822 | 443 | int s_1,s_2,fa,ns,ns_from,ns_to; |
cfe71c00 | 444 | #if !defined(_MACOSX) && !defined(__arm__) |
ef79bbde P |
445 | int voldiv = iVolume; |
446 | #else | |
447 | const int voldiv = 2; | |
448 | #endif | |
449 | unsigned char * start;unsigned int nSample; | |
450 | int ch,predict_nr,shift_factor,flags,d,s; | |
451 | int bIRQReturn=0; | |
452 | ||
453 | while(!bEndThread) // until we are shutting down | |
454 | { | |
455 | // ok, at the beginning we are looking if there is | |
456 | // enuff free place in the dsound/oss buffer to | |
457 | // fill in new data, or if there is a new channel to start. | |
458 | // if not, we wait (thread) or return (timer/spuasync) | |
459 | // until enuff free place is available/a new channel gets | |
460 | // started | |
461 | ||
462 | if(dwNewChannel) // new channel should start immedately? | |
463 | { // (at least one bit 0 ... MAXCHANNEL is set?) | |
464 | iSecureStart++; // -> set iSecure | |
465 | 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) | |
466 | } | |
467 | else iSecureStart=0; // 0: no new channel should start | |
468 | ||
469 | while(!iSecureStart && !bEndThread && // no new start? no thread end? | |
470 | (SoundGetBytesBuffered()>TESTSIZE)) // and still enuff data in sound buffer? | |
471 | { | |
472 | iSecureStart=0; // reset secure | |
473 | ||
474 | if(iUseTimer) return 0; // linux no-thread mode? bye | |
475 | usleep(PAUSE_L); // else sleep for x ms (linux) | |
476 | ||
477 | if(dwNewChannel) iSecureStart=1; // if a new channel kicks in (or, of course, sound buffer runs low), we will leave the loop | |
478 | } | |
479 | ||
480 | //--------------------------------------------------// continue from irq handling in timer mode? | |
481 | ||
8680e822 | 482 | ns_from=0; |
483 | ns_to=NSSIZE; | |
484 | ch=0; | |
ef79bbde P |
485 | if(lastch>=0) // will be -1 if no continue is pending |
486 | { | |
8680e822 | 487 | ch=lastch; ns_from=lastns+1; lastch=-1; // -> setup all kind of vars to continue |
ef79bbde P |
488 | } |
489 | ||
490 | //--------------------------------------------------// | |
491 | //- main channel loop -// | |
492 | //--------------------------------------------------// | |
493 | { | |
8680e822 | 494 | for(;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel |
ef79bbde | 495 | { |
6d866bb7 | 496 | if(dwNewChannel&(1<<ch)) StartSound(ch); // start new sound |
497 | if(!(dwChannelOn&(1<<ch))) continue; // channel not playing? next | |
ef79bbde P |
498 | |
499 | if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency? | |
500 | VoiceChangeFrequency(ch); | |
501 | ||
8680e822 | 502 | for(ns=ns_from;ns<ns_to;ns++) // loop until 1 ms of data is reached |
ef79bbde | 503 | { |
6d866bb7 | 504 | int sval; |
505 | ||
ef79bbde P |
506 | if(s_chan[ch].bFMod==1 && iFMod[ns]) // fmod freq channel |
507 | FModChangeFrequency(ch,ns); | |
508 | ||
509 | while(s_chan[ch].spos>=0x10000L) | |
510 | { | |
511 | if(s_chan[ch].iSBPos==28) // 28 reached? | |
512 | { | |
513 | start=s_chan[ch].pCurr; // set up the current pos | |
514 | ||
515 | if (start == (unsigned char*)-1) // special "stop" sign | |
516 | { | |
6d866bb7 | 517 | dwChannelOn&=~(1<<ch); // -> turn everything off |
ef79bbde P |
518 | s_chan[ch].ADSRX.EnvelopeVol=0; |
519 | goto ENDX; // -> and done for this channel | |
520 | } | |
521 | ||
522 | s_chan[ch].iSBPos=0; | |
523 | ||
524 | //////////////////////////////////////////// spu irq handler here? mmm... do it later | |
525 | ||
526 | s_1=s_chan[ch].s_1; | |
527 | s_2=s_chan[ch].s_2; | |
528 | ||
529 | predict_nr=(int)*start;start++; | |
530 | shift_factor=predict_nr&0xf; | |
531 | predict_nr >>= 4; | |
532 | flags=(int)*start;start++; | |
533 | ||
534 | // -------------------------------------- // | |
535 | ||
536 | for (nSample=0;nSample<28;start++) | |
537 | { | |
538 | d=(int)*start; | |
539 | s=((d&0xf)<<12); | |
540 | if(s&0x8000) s|=0xffff0000; | |
541 | ||
542 | fa=(s >> shift_factor); | |
543 | fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6); | |
544 | s_2=s_1;s_1=fa; | |
545 | s=((d & 0xf0) << 8); | |
546 | ||
547 | s_chan[ch].SB[nSample++]=fa; | |
548 | ||
549 | if(s&0x8000) s|=0xffff0000; | |
550 | fa=(s>>shift_factor); | |
551 | fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6); | |
552 | s_2=s_1;s_1=fa; | |
553 | ||
554 | s_chan[ch].SB[nSample++]=fa; | |
555 | } | |
556 | ||
557 | //////////////////////////////////////////// irq check | |
558 | ||
559 | if(irqCallback && (spuCtrl&0x40)) // some callback and irq active? | |
560 | { | |
561 | if((pSpuIrq > start-16 && // irq address reached? | |
562 | pSpuIrq <= start) || | |
563 | ((flags&1) && // special: irq on looping addr, when stop/loop flag is set | |
564 | (pSpuIrq > s_chan[ch].pLoop-16 && | |
565 | pSpuIrq <= s_chan[ch].pLoop))) | |
566 | { | |
ef79bbde P |
567 | irqCallback(); // -> call main emu |
568 | ||
569 | if(iSPUIRQWait) // -> option: wait after irq for main emu | |
570 | { | |
571 | iSpuAsyncWait=1; | |
572 | bIRQReturn=1; | |
8680e822 | 573 | lastch=ch; |
574 | lastns=ns; | |
575 | ns_to=ns+1; | |
ef79bbde P |
576 | } |
577 | } | |
578 | } | |
579 | ||
580 | //////////////////////////////////////////// flag handler | |
581 | ||
582 | if((flags&4) && (!s_chan[ch].bIgnoreLoop)) | |
583 | s_chan[ch].pLoop=start-16; // loop adress | |
584 | ||
585 | if(flags&1) // 1: stop/loop | |
586 | { | |
587 | // We play this block out first... | |
588 | //if(!(flags&2)) // 1+2: do loop... otherwise: stop | |
589 | 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) | |
590 | { // and checking if pLoop is set avoids crashes, yeah | |
591 | start = (unsigned char*)-1; | |
592 | } | |
593 | else | |
594 | { | |
595 | start = s_chan[ch].pLoop; | |
596 | } | |
597 | } | |
598 | ||
599 | s_chan[ch].pCurr=start; // store values for next cycle | |
600 | s_chan[ch].s_1=s_1; | |
601 | s_chan[ch].s_2=s_2; | |
ef79bbde P |
602 | } |
603 | ||
604 | fa=s_chan[ch].SB[s_chan[ch].iSBPos++]; // get sample data | |
605 | ||
606 | StoreInterpolationVal(ch,fa); // store val for later interpolation | |
607 | ||
608 | s_chan[ch].spos -= 0x10000L; | |
609 | } | |
610 | ||
611 | if(s_chan[ch].bNoise) | |
612 | fa=iGetNoiseVal(ch); // get noise val | |
613 | else fa=iGetInterpolationVal(ch); // get sample val | |
614 | ||
6d866bb7 | 615 | sval = (MixADSR(ch) * fa) / 1023; // mix adsr |
ef79bbde P |
616 | |
617 | if(s_chan[ch].bFMod==2) // fmod freq channel | |
6d866bb7 | 618 | iFMod[ns]=sval; // -> store 1T sample data, use that to do fmod on next channel |
ef79bbde P |
619 | else // no fmod freq channel |
620 | { | |
621 | ////////////////////////////////////////////// | |
622 | // ok, left/right sound volume (psx volume goes from 0 ... 0x3fff) | |
623 | ||
97ea4077 | 624 | SSumLR[ns*2] +=(sval*s_chan[ch].iLeftVolume)/0x4000L; |
625 | SSumLR[ns*2+1]+=(sval*s_chan[ch].iRightVolume)/0x4000L; | |
ef79bbde P |
626 | |
627 | ////////////////////////////////////////////// | |
628 | // now let us store sound data for reverb | |
629 | ||
6d866bb7 | 630 | if(s_chan[ch].bRVBActive) StoreREVERB(ch,ns,sval); |
ef79bbde P |
631 | } |
632 | ||
633 | //////////////////////////////////////////////// | |
634 | // ok, go on until 1 ms data of this channel is collected | |
635 | ||
ef79bbde | 636 | s_chan[ch].spos += s_chan[ch].sinc; |
ef79bbde P |
637 | } |
638 | ENDX: ; | |
639 | } | |
640 | } | |
641 | ||
8680e822 | 642 | if(bIRQReturn) // special return for "spu irq - wait for cpu action" |
643 | { | |
644 | bIRQReturn=0; | |
645 | if(iUseTimer!=2) | |
646 | { | |
647 | DWORD dwWatchTime=timeGetTime_spu()+2500; | |
648 | ||
649 | while(iSpuAsyncWait && !bEndThread && | |
650 | timeGetTime_spu()<dwWatchTime) | |
651 | usleep(1000L); | |
652 | continue; | |
653 | } | |
654 | else | |
655 | { | |
656 | return 0; | |
657 | } | |
658 | } | |
659 | ||
660 | ||
ef79bbde P |
661 | //---------------------------------------------------// |
662 | //- here we have another 1 ms of sound data | |
663 | //---------------------------------------------------// | |
664 | // mix XA infos (if any) | |
665 | ||
666 | MixXA(); | |
667 | ||
668 | /////////////////////////////////////////////////////// | |
669 | // mix all channels (including reverb) into one buffer | |
670 | ||
97ea4077 | 671 | for (ns = 0; ns < NSSIZE*2; ) |
ef79bbde | 672 | { |
97ea4077 | 673 | SSumLR[ns] += MixREVERBLeft(ns/2); |
ef79bbde | 674 | |
97ea4077 | 675 | d = SSumLR[ns] / voldiv; SSumLR[ns] = 0; |
ef79bbde P |
676 | if (d < -32767) d = -32767; if (d > 32767) d = 32767; |
677 | *pS++ = d; | |
97ea4077 | 678 | ns++; |
ef79bbde | 679 | |
97ea4077 | 680 | SSumLR[ns] += MixREVERBRight(); |
ef79bbde | 681 | |
97ea4077 | 682 | d = SSumLR[ns] / voldiv; SSumLR[ns] = 0; |
ef79bbde P |
683 | if(d < -32767) d = -32767; if(d > 32767) d = 32767; |
684 | *pS++ = d; | |
97ea4077 | 685 | ns++; |
ef79bbde P |
686 | } |
687 | ||
688 | ////////////////////////////////////////////////////// | |
689 | // special irq handling in the decode buffers (0x0000-0x1000) | |
690 | // we know: | |
691 | // the decode buffers are located in spu memory in the following way: | |
692 | // 0x0000-0x03ff CD audio left | |
693 | // 0x0400-0x07ff CD audio right | |
694 | // 0x0800-0x0bff Voice 1 | |
695 | // 0x0c00-0x0fff Voice 3 | |
696 | // and decoded data is 16 bit for one sample | |
697 | // we assume: | |
698 | // even if voices 1/3 are off or no cd audio is playing, the internal | |
699 | // play positions will move on and wrap after 0x400 bytes. | |
700 | // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and | |
701 | // increase this pointer on each sample by 2 bytes. If this pointer | |
702 | // (or 0x400 offsets of this pointer) hits the spuirq address, we generate | |
703 | // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here | |
704 | // in some of Peops timer modes. So: we ignore this option here (for now). | |
705 | ||
706 | if(pMixIrq && irqCallback) | |
707 | { | |
708 | for(ns=0;ns<NSSIZE;ns++) | |
709 | { | |
710 | if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000) | |
711 | { | |
712 | for(ch=0;ch<4;ch++) | |
713 | { | |
714 | if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2) | |
6d866bb7 | 715 | irqCallback(); |
ef79bbde P |
716 | } |
717 | } | |
718 | pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC; | |
719 | } | |
720 | } | |
721 | ||
722 | InitREVERB(); | |
723 | ||
724 | // feed the sound | |
725 | // wanna have around 1/60 sec (16.666 ms) updates | |
726 | if (iCycle++ > 16) | |
727 | { | |
728 | SoundFeedStreamData((unsigned char *)pSpuBuffer, | |
729 | ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer)); | |
730 | pS = (short *)pSpuBuffer; | |
731 | iCycle = 0; | |
732 | } | |
733 | } | |
734 | ||
735 | // end of big main loop... | |
736 | ||
737 | bThreadEnded = 1; | |
738 | ||
739 | return 0; | |
740 | } | |
741 | ||
742 | // SPU ASYNC... even newer epsxe func | |
743 | // 1 time every 'cycle' cycles... harhar | |
744 | ||
745 | void CALLBACK SPUasync(unsigned long cycle) | |
746 | { | |
747 | if(iSpuAsyncWait) | |
748 | { | |
749 | iSpuAsyncWait++; | |
17ed0d69 | 750 | if(iSpuAsyncWait<=16) return; |
ef79bbde P |
751 | iSpuAsyncWait=0; |
752 | } | |
753 | ||
754 | if(iUseTimer==2) // special mode, only used in Linux by this spu (or if you enable the experimental Windows mode) | |
755 | { | |
756 | if(!bSpuInit) return; // -> no init, no call | |
757 | ||
758 | MAINThread(0); // -> linux high-compat mode | |
17ed0d69 | 759 | |
760 | // abuse iSpuAsyncWait mechanism to reduce calls to above function | |
761 | // to make it do larger chunks | |
762 | // note: doing it less often than once per frame causes skips | |
763 | iSpuAsyncWait=1; | |
ef79bbde P |
764 | } |
765 | } | |
766 | ||
767 | // SPU UPDATE... new epsxe func | |
768 | // 1 time every 32 hsync lines | |
769 | // (312/32)x50 in pal | |
770 | // (262/32)x60 in ntsc | |
771 | ||
772 | // since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will | |
773 | // leave that func in the linux port, until epsxe linux is using | |
774 | // the async function as well | |
775 | ||
776 | void CALLBACK SPUupdate(void) | |
777 | { | |
778 | SPUasync(0); | |
779 | } | |
780 | ||
781 | // XA AUDIO | |
782 | ||
783 | void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap) | |
784 | { | |
785 | if(!xap) return; | |
786 | if(!xap->freq) return; // no xa freq ? bye | |
787 | ||
788 | FeedXA(xap); // call main XA feeder | |
789 | } | |
790 | ||
791 | // CDDA AUDIO | |
792 | void CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes) | |
793 | { | |
794 | if (!pcm) return; | |
795 | if (nbytes<=0) return; | |
796 | ||
797 | FeedCDDA((unsigned char *)pcm, nbytes); | |
798 | } | |
799 | ||
800 | // SETUPTIMER: init of certain buffers and threads/timers | |
801 | void SetupTimer(void) | |
802 | { | |
97ea4077 | 803 | memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers |
ef79bbde P |
804 | memset(iFMod,0,NSSIZE*sizeof(int)); |
805 | pS=(short *)pSpuBuffer; // setup soundbuffer pointer | |
806 | ||
807 | bEndThread=0; // init thread vars | |
808 | bThreadEnded=0; | |
809 | bSpuInit=1; // flag: we are inited | |
810 | ||
811 | if(!iUseTimer) // linux: use thread | |
812 | { | |
813 | pthread_create(&thread, NULL, MAINThread, NULL); | |
814 | } | |
815 | } | |
816 | ||
817 | // REMOVETIMER: kill threads/timers | |
818 | void RemoveTimer(void) | |
819 | { | |
820 | bEndThread=1; // raise flag to end thread | |
821 | ||
822 | if(!iUseTimer) // linux tread? | |
823 | { | |
824 | int i=0; | |
825 | while(!bThreadEnded && i<2000) {usleep(1000L);i++;} // -> wait until thread has ended | |
826 | if(thread!=(pthread_t)-1) {pthread_cancel(thread);thread=(pthread_t)-1;} // -> cancel thread anyway | |
827 | } | |
828 | ||
829 | bThreadEnded=0; // no more spu is running | |
830 | bSpuInit=0; | |
831 | } | |
832 | ||
833 | // SETUPSTREAMS: init most of the spu buffers | |
834 | void SetupStreams(void) | |
835 | { | |
836 | int i; | |
837 | ||
838 | pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer | |
839 | ||
840 | if(iUseReverb==1) i=88200*2; | |
841 | else i=NSSIZE*2; | |
842 | ||
843 | sRVBStart = (int *)malloc(i*4); // alloc reverb buffer | |
844 | memset(sRVBStart,0,i*4); | |
845 | sRVBEnd = sRVBStart + i; | |
846 | sRVBPlay = sRVBStart; | |
847 | ||
848 | XAStart = // alloc xa buffer | |
849 | (uint32_t *)malloc(44100 * sizeof(uint32_t)); | |
850 | XAEnd = XAStart + 44100; | |
851 | XAPlay = XAStart; | |
852 | XAFeed = XAStart; | |
853 | ||
854 | CDDAStart = // alloc cdda buffer | |
855 | (uint32_t *)malloc(16384 * sizeof(uint32_t)); | |
856 | CDDAEnd = CDDAStart + 16384; | |
857 | CDDAPlay = CDDAStart; | |
b8e744ce | 858 | CDDAFeed = CDDAStart; |
ef79bbde P |
859 | |
860 | for(i=0;i<MAXCHAN;i++) // loop sound channels | |
861 | { | |
862 | // we don't use mutex sync... not needed, would only | |
863 | // slow us down: | |
864 | // s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL); | |
6d866bb7 | 865 | s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain |
ef79bbde P |
866 | s_chan[i].pLoop=spuMemC; |
867 | s_chan[i].pStart=spuMemC; | |
868 | s_chan[i].pCurr=spuMemC; | |
869 | } | |
870 | ||
871 | pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address | |
872 | } | |
873 | ||
874 | // REMOVESTREAMS: free most buffer | |
875 | void RemoveStreams(void) | |
876 | { | |
877 | free(pSpuBuffer); // free mixing buffer | |
878 | pSpuBuffer = NULL; | |
879 | free(sRVBStart); // free reverb buffer | |
880 | sRVBStart = NULL; | |
881 | free(XAStart); // free XA buffer | |
882 | XAStart = NULL; | |
883 | free(CDDAStart); // free CDDA buffer | |
884 | CDDAStart = NULL; | |
885 | } | |
886 | ||
887 | // INIT/EXIT STUFF | |
888 | ||
889 | // SPUINIT: this func will be called first by the main emu | |
890 | long CALLBACK SPUinit(void) | |
891 | { | |
892 | spuMemC = (unsigned char *)spuMem; // just small setup | |
893 | memset((void *)&rvb, 0, sizeof(REVERBInfo)); | |
894 | InitADSR(); | |
895 | ||
896 | iVolume = 3; | |
897 | iReverbOff = -1; | |
898 | spuIrq = 0; | |
899 | spuAddr = 0xffffffff; | |
900 | bEndThread = 0; | |
901 | bThreadEnded = 0; | |
902 | spuMemC = (unsigned char *)spuMem; | |
903 | pMixIrq = 0; | |
904 | memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN)); | |
905 | pSpuIrq = 0; | |
cdb31c95 | 906 | //iSPUIRQWait = 0; |
ef79bbde P |
907 | lastch = -1; |
908 | ||
d7296e10 | 909 | //ReadConfigSPU(); // read user stuff |
ef79bbde P |
910 | SetupStreams(); // prepare streaming |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
915 | // SPUOPEN: called by main emu after init | |
916 | long CALLBACK SPUopen(void) | |
917 | { | |
918 | if (bSPUIsOpen) return 0; // security for some stupid main emus | |
919 | ||
920 | SetupSound(); // setup sound (before init!) | |
921 | SetupTimer(); // timer for feeding data | |
922 | ||
923 | bSPUIsOpen = 1; | |
924 | ||
925 | return PSE_SPU_ERR_SUCCESS; | |
926 | } | |
927 | ||
928 | // SPUCLOSE: called before shutdown | |
929 | long CALLBACK SPUclose(void) | |
930 | { | |
931 | if (!bSPUIsOpen) return 0; // some security | |
932 | ||
933 | bSPUIsOpen = 0; // no more open | |
934 | ||
935 | RemoveTimer(); // no more feeding | |
936 | RemoveSound(); // no more sound handling | |
937 | ||
938 | return 0; | |
939 | } | |
940 | ||
941 | // SPUSHUTDOWN: called by main emu on final exit | |
942 | long CALLBACK SPUshutdown(void) | |
943 | { | |
944 | SPUclose(); | |
945 | RemoveStreams(); // no more streaming | |
946 | ||
947 | return 0; | |
948 | } | |
949 | ||
950 | // SPUTEST: we don't test, we are always fine ;) | |
951 | long CALLBACK SPUtest(void) | |
952 | { | |
953 | return 0; | |
954 | } | |
955 | ||
956 | // SPUCONFIGURE: call config dialog | |
957 | long CALLBACK SPUconfigure(void) | |
958 | { | |
959 | #ifdef _MACOSX | |
960 | DoConfiguration(); | |
961 | #else | |
ee849648 | 962 | // StartCfgTool("CFG"); |
ef79bbde P |
963 | #endif |
964 | return 0; | |
965 | } | |
966 | ||
967 | // SPUABOUT: show about window | |
968 | void CALLBACK SPUabout(void) | |
969 | { | |
970 | #ifdef _MACOSX | |
971 | DoAbout(); | |
972 | #else | |
ee849648 | 973 | // StartCfgTool("ABOUT"); |
ef79bbde P |
974 | #endif |
975 | } | |
976 | ||
977 | // SETUP CALLBACKS | |
978 | // this functions will be called once, | |
979 | // passes a callback that should be called on SPU-IRQ/cdda volume change | |
980 | void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void)) | |
981 | { | |
982 | irqCallback = callback; | |
983 | } | |
984 | ||
985 | void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short)) | |
986 | { | |
987 | cddavCallback = CDDAVcallback; | |
988 | } | |
989 | ||
990 | // COMMON PLUGIN INFO FUNCS | |
e906c010 | 991 | /* |
ef79bbde P |
992 | char * CALLBACK PSEgetLibName(void) |
993 | { | |
994 | return _(libraryName); | |
995 | } | |
996 | ||
997 | unsigned long CALLBACK PSEgetLibType(void) | |
998 | { | |
999 | return PSE_LT_SPU; | |
1000 | } | |
1001 | ||
1002 | unsigned long CALLBACK PSEgetLibVersion(void) | |
1003 | { | |
1004 | return (1 << 16) | (6 << 8); | |
1005 | } | |
1006 | ||
1007 | char * SPUgetLibInfos(void) | |
1008 | { | |
1009 | return _(libraryInfo); | |
1010 | } | |
e906c010 | 1011 | */ |
6d866bb7 | 1012 | |
1013 | // vim:shiftwidth=1:expandtab |