1 /***************************************************************************
4 begin : Wed May 15 2002
5 copyright : (C) 2002 by Pete Bernert
6 email : BlackDove@addcom.de
8 Portions (C) GraÅžvydas "notaz" Ignotas, 2010-2011
10 ***************************************************************************/
11 /***************************************************************************
13 * This program is free software; you can redistribute it and/or modify *
14 * it under the terms of the GNU General Public License as published by *
15 * the Free Software Foundation; either version 2 of the License, or *
16 * (at your option) any later version. See also the license.txt file for *
17 * additional informations. *
19 ***************************************************************************/
25 #include "externals.h"
26 #include "registers.h"
28 #include "dsoundoss.h"
34 #define _(x) gettext(x)
42 #define ssat32_to_16(v) \
43 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
45 #define ssat32_to_16(v) do { \
46 if (v < -32768) v = -32768; \
47 else if (v > 32767) v = 32767; \
52 #if defined (USEMACOSX)
53 static char * libraryName = N_("Mac OS X Sound");
54 #elif defined (USEALSA)
55 static char * libraryName = N_("ALSA Sound");
56 #elif defined (USEOSS)
57 static char * libraryName = N_("OSS Sound");
58 #elif defined (USESDL)
59 static char * libraryName = N_("SDL Sound");
60 #elif defined (USEPULSEAUDIO)
61 static char * libraryName = N_("PulseAudio Sound");
63 static char * libraryName = N_("NULL Sound");
66 static char * libraryInfo = N_("P.E.Op.S. Sound Driver V1.7\nCoded by Pete Bernert and the P.E.Op.S. team\n");
71 // psx buffer / addresses
73 unsigned short regArea[10000];
74 unsigned short spuMem[256*1024];
75 unsigned char * spuMemC;
76 unsigned char * pSpuIrq=0;
77 unsigned char * pSpuBuffer;
78 unsigned char * pMixIrq=0;
82 int iVolume=768; // 1024 is 1.0
89 int iUseInterpolation=2;
91 // MAIN infos struct for each channel
93 SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling)
96 unsigned int dwNoiseVal; // global noise generator
97 unsigned int dwNoiseCount;
100 unsigned short spuCtrl=0; // some vars to store psx reg infos
101 unsigned short spuStat=0;
102 unsigned short spuIrq=0;
103 unsigned long spuAddr=0xffffffff; // address into spu mem
104 int bEndThread=0; // thread handlers
109 static pthread_t thread = (pthread_t)-1; // thread id (linux)
111 unsigned int dwNewChannel=0; // flags for faster testing, if new channel starts
112 unsigned int dwChannelOn=0; // not silent channels
113 unsigned int dwPendingChanOff=0;
114 unsigned int dwChannelDead=0; // silent+not useful channels
116 void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq
117 void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0;
119 // certain globals (were local before, but with the new timeproc I need em global)
121 static const int f[8][2] = { { 0, 0 },
126 int ChanBuf[NSSIZE+3];
127 int SSumLR[(NSSIZE+3)*2];
132 int lastch=-1; // last channel processed on spu irq in timer mode
133 static int lastns=0; // last ns pos
134 static int iSecureStart=0; // secure start counter
136 ////////////////////////////////////////////////////////////////////////
138 ////////////////////////////////////////////////////////////////////////
140 // dirty inline func includes
145 ////////////////////////////////////////////////////////////////////////
146 // helpers for simple interpolation
149 // easy interpolation on upsampling, no special filter, just "Pete's common sense" tm
151 // instead of having n equal sample values in a row like:
155 // we compare the current delta change with the next delta change.
157 // if curr_delta is positive,
159 // - and next delta is smaller (or changing direction):
163 // - and next delta significant (at least twice) bigger:
167 // - and next delta is nearly same:
172 // if curr_delta is negative,
174 // - and next delta is smaller (or changing direction):
178 // - and next delta significant (at least twice) bigger:
182 // - and next delta is nearly same:
188 INLINE void InterpolateUp(int ch)
190 if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass
192 const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val
193 const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :)
197 if(id1>0) // curr delta positive
200 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
203 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
205 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
207 else // curr delta negative
210 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
213 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
215 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
219 if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass
223 s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L;
224 if(s_chan[ch].sinc<=0x8000)
225 s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1));
226 else s_chan[ch].SB[29]+=s_chan[ch].SB[28];
228 else // no flags? add bigger val (if possible), calc smaller step, set flag1
229 s_chan[ch].SB[29]+=s_chan[ch].SB[28];
233 // even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm
236 INLINE void InterpolateDown(int ch)
238 if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val?
240 s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight
241 if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals?
242 s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight
246 ////////////////////////////////////////////////////////////////////////
247 // helpers for gauss interpolation
249 #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos])
250 #define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
254 ////////////////////////////////////////////////////////////////////////
258 ////////////////////////////////////////////////////////////////////////
259 // START SOUND... called by main thread to setup a new sound on a channel
260 ////////////////////////////////////////////////////////////////////////
262 INLINE void StartSound(int ch)
267 // fussy timing issues - do in VoiceOn
268 //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start
269 //s_chan[ch].bStop=0;
272 s_chan[ch].SB[26]=0; // init mixing vars
274 s_chan[ch].iSBPos=28;
276 s_chan[ch].SB[29]=0; // init our interpolation helpers
279 if(iUseInterpolation>=2) // gauss interpolation?
280 {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding
281 else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding
283 dwNewChannel&=~(1<<ch); // clear new channel bit
286 ////////////////////////////////////////////////////////////////////////
287 // ALL KIND OF HELPERS
288 ////////////////////////////////////////////////////////////////////////
290 INLINE void VoiceChangeFrequency(int ch)
292 s_chan[ch].iUsedFreq=s_chan[ch].iActFreq; // -> take it and calc steps
293 s_chan[ch].sinc=s_chan[ch].iRawPitch<<4;
294 if(!s_chan[ch].sinc) s_chan[ch].sinc=1;
295 if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simle imterpolation mode: set flag
298 ////////////////////////////////////////////////////////////////////////
300 INLINE int FModChangeFrequency(int ch,int ns)
302 int NP=s_chan[ch].iRawPitch;
305 NP=((32768L+iFMod[ns])*NP)/32768L;
307 if(NP>0x3fff) NP=0x3fff;
310 NP=(44100L*NP)/(4096L); // calc frequency
312 s_chan[ch].iActFreq=NP;
313 s_chan[ch].iUsedFreq=NP;
314 sinc=(((NP/10)<<16)/4410);
316 if(iUseInterpolation==1) // freq change in simple interpolation mode
323 ////////////////////////////////////////////////////////////////////////
325 INLINE void StoreInterpolationVal(int ch,int fa)
327 if(s_chan[ch].bFMod==2) // fmod freq channel
328 s_chan[ch].SB[29]=fa;
333 if(iUseInterpolation>=2) // gauss/cubic interpolation
335 int gpos = s_chan[ch].SB[28];
338 s_chan[ch].SB[28] = gpos;
341 if(iUseInterpolation==1) // simple interpolation
343 s_chan[ch].SB[28] = 0;
344 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'
345 s_chan[ch].SB[30] = s_chan[ch].SB[31];
346 s_chan[ch].SB[31] = fa;
347 s_chan[ch].SB[32] = 1; // -> flag: calc new interolation
349 else s_chan[ch].SB[29]=fa; // no interpolation
353 ////////////////////////////////////////////////////////////////////////
355 INLINE int iGetInterpolationVal(int ch)
359 if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29];
361 switch(iUseInterpolation)
363 //--------------------------------------------------//
364 case 3: // cubic interpolation
367 xd = ((s_chan[ch].spos) >> 1)+1;
368 gpos = s_chan[ch].SB[28];
370 fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0;
371 fa *= (xd - (2<<15)) / 6;
373 fa += gval(2) - gval(1) - gval(1) + gval0;
374 fa *= (xd - (1<<15)) >> 1;
376 fa += gval(1) - gval0;
382 //--------------------------------------------------//
383 case 2: // gauss interpolation
386 vl = (s_chan[ch].spos >> 6) & ~3;
387 gpos = s_chan[ch].SB[28];
388 vr=(gauss[vl]*gval0)&~2047;
389 vr+=(gauss[vl+1]*gval(1))&~2047;
390 vr+=(gauss[vl+2]*gval(2))&~2047;
391 vr+=(gauss[vl+3]*gval(3))&~2047;
394 //--------------------------------------------------//
395 case 1: // simple interpolation
397 if(s_chan[ch].sinc<0x10000L) // -> upsampling?
398 InterpolateUp(ch); // --> interpolate up
399 else InterpolateDown(ch); // --> else down
400 fa=s_chan[ch].SB[29];
402 //--------------------------------------------------//
403 default: // no interpolation
405 fa=s_chan[ch].SB[29];
407 //--------------------------------------------------//
413 static void do_irq(void)
415 if(!(spuStat & STAT_IRQ))
418 if(irqCallback) irqCallback();
422 static void decode_block_data(int *dest, const unsigned char *src, int predict_nr, int shift_factor)
425 int fa, s_1, s_2, d, s;
430 for (nSample = 0; nSample < 28; src++)
433 s = (int)(signed short)((d & 0x0f) << 12);
435 fa = s >> shift_factor;
436 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
439 dest[nSample++] = fa;
441 s = (int)(signed short)((d & 0xf0) << 8);
442 fa = s >> shift_factor;
443 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
446 dest[nSample++] = fa;
450 static int decode_block(int ch)
452 unsigned char *start;
453 int predict_nr,shift_factor,flags;
456 start=s_chan[ch].pCurr; // set up the current pos
457 if(dwPendingChanOff&(1<<ch))
459 dwChannelOn&=~(1<<ch); // -> turn everything off
460 dwPendingChanOff&=~(1<<ch);
462 s_chan[ch].ADSRX.EnvelopeVol=0;
465 //////////////////////////////////////////// irq check
469 if(pSpuIrq == start) // irq address reached?
471 do_irq(); // -> call main emu
476 predict_nr=(int)start[0];
477 shift_factor=predict_nr&0xf;
480 decode_block_data(s_chan[ch].SB, start + 2, predict_nr, shift_factor);
482 //////////////////////////////////////////// flag handler
486 s_chan[ch].pLoop=start; // loop adress
489 if(flags&1) // 1: stop/loop
492 dwPendingChanOff|=1<<ch;
494 start = s_chan[ch].pLoop;
497 if (start - spuMemC >= 0x80000) {
500 printf("ch%d oflow\n", ch);
503 s_chan[ch].pCurr = start; // store values for next cycle
508 // do block, but ignore sample data
509 static int skip_block(int ch)
511 unsigned char *start = s_chan[ch].pCurr;
512 int flags = start[1];
515 // Tron Bonne hack, probably wrong (could be wrong memory contents..)
516 if(flags & ~7) flags = 0;
525 s_chan[ch].pLoop=start;
527 s_chan[ch].pCurr += 16;
530 s_chan[ch].pCurr = s_chan[ch].pLoop;
535 #define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
536 static int do_samples_##name(int ch, int ns, int ns_to) \
538 int sinc = s_chan[ch].sinc; \
539 int spos = s_chan[ch].spos; \
540 int sbpos = s_chan[ch].iSBPos; \
541 int *SB = s_chan[ch].SB; \
546 for (; ns < ns_to; ns++) \
550 while (spos >= 0x10000) \
555 d = decode_block(ch); \
556 if(d && iSPUIRQWait) \
573 s_chan[ch].sinc = sinc; \
574 s_chan[ch].spos = spos; \
575 s_chan[ch].iSBPos = sbpos; \
581 #define fmod_recv_check \
582 if(s_chan[ch].bFMod==1 && iFMod[ns]) \
583 sinc = FModChangeFrequency(ch,ns)
585 make_do_samples(default, fmod_recv_check, ,
586 StoreInterpolationVal(ch, fa),
587 ChanBuf[ns] = iGetInterpolationVal(ch), )
588 make_do_samples(noint, , fa = s_chan[ch].SB[29], , ChanBuf[ns] = fa, s_chan[ch].SB[29] = fa)
590 #define simple_interp_store \
591 s_chan[ch].SB[28] = 0; \
592 s_chan[ch].SB[29] = s_chan[ch].SB[30]; \
593 s_chan[ch].SB[30] = s_chan[ch].SB[31]; \
594 s_chan[ch].SB[31] = fa; \
595 s_chan[ch].SB[32] = 1
597 #define simple_interp_get \
598 if(sinc<0x10000) /* -> upsampling? */ \
599 InterpolateUp(ch); /* --> interpolate up */ \
600 else InterpolateDown(ch); /* --> else down */ \
601 ChanBuf[ns] = s_chan[ch].SB[29]
603 make_do_samples(simple, , ,
604 simple_interp_store, simple_interp_get, )
606 static int do_samples_noise(int ch, int ns, int ns_to)
608 int level, shift, bit;
610 s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns);
611 while (s_chan[ch].spos >= 28*0x10000)
614 s_chan[ch].spos -= 28*0x10000;
617 // modified from DrHell/shalma, no fraction
618 level = (spuCtrl >> 10) & 0x0f;
619 level = 0x8000 >> level;
621 for (; ns < ns_to; ns++)
624 if (dwNoiseCount >= level)
626 dwNoiseCount -= level;
627 shift = (dwNoiseVal >> 10) & 0x1f;
628 bit = (0x69696969 >> shift) & 1;
629 if (dwNoiseVal & 0x8000)
631 dwNoiseVal = (dwNoiseVal << 1) | bit;
634 ChanBuf[ns] = (signed short)dwNoiseVal;
642 extern void mix_chan(int start, int count, int lv, int rv);
643 extern void mix_chan_rvb(int start, int count, int lv, int rv);
645 static void mix_chan(int start, int count, int lv, int rv)
647 int *dst = SSumLR + start * 2;
648 const int *src = ChanBuf + start;
655 l = (sval * lv) >> 14;
656 r = (sval * rv) >> 14;
662 static void mix_chan_rvb(int start, int count, int lv, int rv)
664 int *dst = SSumLR + start * 2;
665 int *drvb = sRVBStart + start * 2;
666 const int *src = ChanBuf + start;
673 l = (sval * lv) >> 14;
674 r = (sval * rv) >> 14;
683 ////////////////////////////////////////////////////////////////////////
685 // here is the main job handler... thread, timer or direct func call
686 // basically the whole sound processing is done in this fat func!
687 ////////////////////////////////////////////////////////////////////////
689 // 5 ms waiting phase, if buffer is full and no new sound has to get started
690 // .. can be made smaller (smallest val: 1 ms), but bigger waits give
691 // better performance
696 ////////////////////////////////////////////////////////////////////////
698 static void *MAINThread(void *arg)
700 int volmult = iVolume;
701 int ns,ns_from,ns_to;
705 while(!bEndThread) // until we are shutting down
707 // ok, at the beginning we are looking if there is
708 // enuff free place in the dsound/oss buffer to
709 // fill in new data, or if there is a new channel to start.
710 // if not, we wait (thread) or return (timer/spuasync)
711 // until enuff free place is available/a new channel gets
714 if(dwNewChannel) // new channel should start immedately?
715 { // (at least one bit 0 ... MAXCHANNEL is set?)
716 iSecureStart++; // -> set iSecure
717 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)
719 else iSecureStart=0; // 0: no new channel should start
721 while(!iSecureStart && !bEndThread && // no new start? no thread end?
722 (SoundGetBytesBuffered()>TESTSIZE)) // and still enuff data in sound buffer?
724 iSecureStart=0; // reset secure
726 if(iUseTimer) return 0; // linux no-thread mode? bye
727 usleep(PAUSE_L); // else sleep for x ms (linux)
729 if(dwNewChannel) iSecureStart=1; // if a new channel kicks in (or, of course, sound buffer runs low), we will leave the loop
732 //--------------------------------------------------// continue from irq handling in timer mode?
737 if(lastch>=0) // will be -1 if no continue is pending
739 ch=lastch; ns_from=lastns; lastch=-1; // -> setup all kind of vars to continue
742 silentch=~(dwChannelOn|dwNewChannel);
744 //--------------------------------------------------//
745 //- main channel loop -//
746 //--------------------------------------------------//
748 for(;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel
750 if(dwNewChannel&(1<<ch)) StartSound(ch); // start new sound
751 if(!(dwChannelOn&(1<<ch))) continue; // channel not playing? next
753 if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency?
754 VoiceChangeFrequency(ch);
756 if(s_chan[ch].bNoise)
757 d=do_samples_noise(ch, ns_from, ns_to);
758 else if(s_chan[ch].bFMod==2 || (s_chan[ch].bFMod==0 && iUseInterpolation==0))
759 d=do_samples_noint(ch, ns_from, ns_to);
760 else if(s_chan[ch].bFMod==0 && iUseInterpolation==1)
761 d=do_samples_simple(ch, ns_from, ns_to);
763 d=do_samples_default(ch, ns_from, ns_to);
773 MixADSR(ch, ns_from, ns_to);
775 if(s_chan[ch].bFMod==2) // fmod freq channel
776 memcpy(iFMod, ChanBuf, sizeof(iFMod));
777 else if(s_chan[ch].bRVBActive)
778 mix_chan_rvb(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
780 mix_chan(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
784 // advance "stopped" channels that can cause irqs
785 // (all chans are always playing on the real thing..)
786 if(!bIRQReturn && (spuCtrl&CTRL_IRQ))
787 for(ch=0;ch<MAXCHAN;ch++)
789 if(!(silentch&(1<<ch))) continue; // already handled
790 if(dwChannelDead&(1<<ch)) continue;
791 if(s_chan[ch].pCurr > pSpuIrq && s_chan[ch].pLoop > pSpuIrq)
794 if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency?
795 VoiceChangeFrequency(ch);
797 s_chan[ch].spos += s_chan[ch].sinc * NSSIZE;
798 while(s_chan[ch].spos >= 28 * 0x10000)
800 unsigned char *start=s_chan[ch].pCurr;
802 // no need for bIRQReturn since the channel is silent
803 iSpuAsyncWait |= skip_block(ch);
804 if(start == s_chan[ch].pCurr)
807 dwChannelDead|=1<<ch;
811 s_chan[ch].spos -= 28 * 0x10000;
815 if(bIRQReturn && iSPUIRQWait) // special return for "spu irq - wait for cpu action"
821 DWORD dwWatchTime=timeGetTime_spu()+2500;
823 while(iSpuAsyncWait && !bEndThread &&
824 timeGetTime_spu()<dwWatchTime)
835 //---------------------------------------------------//
836 //- here we have another 1 ms of sound data
837 //---------------------------------------------------//
838 // mix XA infos (if any)
842 ///////////////////////////////////////////////////////
843 // mix all channels (including reverb) into one buffer
848 if((spuCtrl&0x4000)==0) // muted? (rare, don't optimize for this)
850 memset(pS, 0, NSSIZE * 2 * sizeof(pS[0]));
854 for (ns = 0; ns < NSSIZE*2; )
856 d = SSumLR[ns]; SSumLR[ns] = 0;
857 d = d * volmult >> 10;
862 d = SSumLR[ns]; SSumLR[ns] = 0;
863 d = d * volmult >> 10;
869 //////////////////////////////////////////////////////
870 // special irq handling in the decode buffers (0x0000-0x1000)
872 // the decode buffers are located in spu memory in the following way:
873 // 0x0000-0x03ff CD audio left
874 // 0x0400-0x07ff CD audio right
875 // 0x0800-0x0bff Voice 1
876 // 0x0c00-0x0fff Voice 3
877 // and decoded data is 16 bit for one sample
879 // even if voices 1/3 are off or no cd audio is playing, the internal
880 // play positions will move on and wrap after 0x400 bytes.
881 // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
882 // increase this pointer on each sample by 2 bytes. If this pointer
883 // (or 0x400 offsets of this pointer) hits the spuirq address, we generate
884 // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here
885 // in some of Peops timer modes. So: we ignore this option here (for now).
889 for(ns=0;ns<NSSIZE;ns++)
891 if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000)
895 if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2)
899 pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC;
906 // wanna have around 1/60 sec (16.666 ms) updates
907 if (iCycle++ > 16/FRAG_MSECS)
909 SoundFeedStreamData((unsigned char *)pSpuBuffer,
910 ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer));
911 pS = (short *)pSpuBuffer;
916 // end of big main loop...
923 // SPU ASYNC... even newer epsxe func
924 // 1 time every 'cycle' cycles... harhar
926 void CALLBACK SPUasync(unsigned long cycle)
931 if(iSpuAsyncWait<=16/FRAG_MSECS) return;
935 if(iUseTimer==2) // special mode, only used in Linux by this spu (or if you enable the experimental Windows mode)
937 if(!bSpuInit) return; // -> no init, no call
939 MAINThread(0); // -> linux high-compat mode
941 // abuse iSpuAsyncWait mechanism to reduce calls to above function
942 // to make it do larger chunks
943 // note: doing it less often than once per frame causes skips
948 // SPU UPDATE... new epsxe func
949 // 1 time every 32 hsync lines
950 // (312/32)x50 in pal
951 // (262/32)x60 in ntsc
953 // since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will
954 // leave that func in the linux port, until epsxe linux is using
955 // the async function as well
957 void CALLBACK SPUupdate(void)
964 void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap)
967 if(!xap->freq) return; // no xa freq ? bye
969 FeedXA(xap); // call main XA feeder
973 void CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
976 if (nbytes<=0) return;
978 FeedCDDA((unsigned char *)pcm, nbytes);
981 // SETUPTIMER: init of certain buffers and threads/timers
982 void SetupTimer(void)
984 memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers
985 memset(iFMod,0,NSSIZE*sizeof(int));
986 pS=(short *)pSpuBuffer; // setup soundbuffer pointer
988 bEndThread=0; // init thread vars
990 bSpuInit=1; // flag: we are inited
992 if(!iUseTimer) // linux: use thread
994 pthread_create(&thread, NULL, MAINThread, NULL);
998 // REMOVETIMER: kill threads/timers
999 void RemoveTimer(void)
1001 bEndThread=1; // raise flag to end thread
1003 if(!iUseTimer) // linux tread?
1006 while(!bThreadEnded && i<2000) {usleep(1000L);i++;} // -> wait until thread has ended
1007 if(thread!=(pthread_t)-1) {pthread_cancel(thread);thread=(pthread_t)-1;} // -> cancel thread anyway
1010 bThreadEnded=0; // no more spu is running
1014 // SETUPSTREAMS: init most of the spu buffers
1015 void SetupStreams(void)
1019 pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer
1021 if(iUseReverb==1) i=88200*2;
1024 sRVBStart = (int *)malloc(i*4); // alloc reverb buffer
1025 memset(sRVBStart,0,i*4);
1026 sRVBEnd = sRVBStart + i;
1027 sRVBPlay = sRVBStart;
1029 XAStart = // alloc xa buffer
1030 (uint32_t *)malloc(44100 * sizeof(uint32_t));
1031 XAEnd = XAStart + 44100;
1035 CDDAStart = // alloc cdda buffer
1036 (uint32_t *)malloc(16384 * sizeof(uint32_t));
1037 CDDAEnd = CDDAStart + 16384;
1038 CDDAPlay = CDDAStart;
1039 CDDAFeed = CDDAStart;
1041 for(i=0;i<MAXCHAN;i++) // loop sound channels
1043 // we don't use mutex sync... not needed, would only
1045 // s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL);
1046 s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain
1047 s_chan[i].pLoop=spuMemC;
1048 s_chan[i].pStart=spuMemC;
1049 s_chan[i].pCurr=spuMemC;
1052 pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address
1055 // REMOVESTREAMS: free most buffer
1056 void RemoveStreams(void)
1058 free(pSpuBuffer); // free mixing buffer
1060 free(sRVBStart); // free reverb buffer
1062 free(XAStart); // free XA buffer
1064 free(CDDAStart); // free CDDA buffer
1070 // SPUINIT: this func will be called first by the main emu
1071 long CALLBACK SPUinit(void)
1073 spuMemC = (unsigned char *)spuMem; // just small setup
1074 memset((void *)&rvb, 0, sizeof(REVERBInfo));
1078 spuAddr = 0xffffffff;
1081 spuMemC = (unsigned char *)spuMem;
1083 memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN));
1088 //ReadConfigSPU(); // read user stuff
1089 SetupStreams(); // prepare streaming
1094 // SPUOPEN: called by main emu after init
1095 long CALLBACK SPUopen(void)
1097 if (bSPUIsOpen) return 0; // security for some stupid main emus
1099 SetupSound(); // setup sound (before init!)
1100 SetupTimer(); // timer for feeding data
1104 return PSE_SPU_ERR_SUCCESS;
1107 // SPUCLOSE: called before shutdown
1108 long CALLBACK SPUclose(void)
1110 if (!bSPUIsOpen) return 0; // some security
1112 bSPUIsOpen = 0; // no more open
1114 RemoveTimer(); // no more feeding
1115 RemoveSound(); // no more sound handling
1120 // SPUSHUTDOWN: called by main emu on final exit
1121 long CALLBACK SPUshutdown(void)
1124 RemoveStreams(); // no more streaming
1129 // SPUTEST: we don't test, we are always fine ;)
1130 long CALLBACK SPUtest(void)
1135 // SPUCONFIGURE: call config dialog
1136 long CALLBACK SPUconfigure(void)
1141 // StartCfgTool("CFG");
1146 // SPUABOUT: show about window
1147 void CALLBACK SPUabout(void)
1152 // StartCfgTool("ABOUT");
1157 // this functions will be called once,
1158 // passes a callback that should be called on SPU-IRQ/cdda volume change
1159 void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void))
1161 irqCallback = callback;
1164 void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short))
1166 cddavCallback = CDDAVcallback;
1169 // COMMON PLUGIN INFO FUNCS
1171 char * CALLBACK PSEgetLibName(void)
1173 return _(libraryName);
1176 unsigned long CALLBACK PSEgetLibType(void)
1181 unsigned long CALLBACK PSEgetLibVersion(void)
1183 return (1 << 16) | (6 << 8);
1186 char * SPUgetLibInfos(void)
1188 return _(libraryInfo);
1193 void spu_get_debug_info(int *chans_out, int *run_chans, int *fmod_chans_out, int *noise_chans_out)
1195 int ch = 0, fmod_chans = 0, noise_chans = 0, irq_chans = 0;
1197 for(;ch<MAXCHAN;ch++)
1199 if (!(dwChannelOn & (1<<ch)))
1201 if (s_chan[ch].bFMod == 2)
1202 fmod_chans |= 1 << ch;
1203 if (s_chan[ch].bNoise)
1204 noise_chans |= 1 << ch;
1205 if((spuCtrl&CTRL_IRQ) && s_chan[ch].pCurr <= pSpuIrq && s_chan[ch].pLoop <= pSpuIrq)
1206 irq_chans |= 1 << ch;
1209 *chans_out = dwChannelOn;
1210 *run_chans = ~dwChannelOn & ~dwChannelDead & irq_chans;
1211 *fmod_chans_out = fmod_chans;
1212 *noise_chans_out = noise_chans;
1215 // vim:shiftwidth=1:expandtab