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 long dwNewChannel=0; // flags for faster testing, if new channel starts
112 unsigned long dwChannelOn=0;
113 unsigned long dwPendingChanOff=0;
115 void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq
116 void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0;
118 // certain globals (were local before, but with the new timeproc I need em global)
120 static const int f[8][2] = { { 0, 0 },
125 int ChanBuf[NSSIZE+3];
126 int SSumLR[(NSSIZE+3)*2];
131 int lastch=-1; // last channel processed on spu irq in timer mode
132 static int lastns=0; // last ns pos
133 static int iSecureStart=0; // secure start counter
135 ////////////////////////////////////////////////////////////////////////
137 ////////////////////////////////////////////////////////////////////////
139 // dirty inline func includes
144 ////////////////////////////////////////////////////////////////////////
145 // helpers for simple interpolation
148 // easy interpolation on upsampling, no special filter, just "Pete's common sense" tm
150 // instead of having n equal sample values in a row like:
154 // we compare the current delta change with the next delta change.
156 // if curr_delta is positive,
158 // - and next delta is smaller (or changing direction):
162 // - and next delta significant (at least twice) bigger:
166 // - and next delta is nearly same:
171 // if curr_delta is negative,
173 // - and next delta is smaller (or changing direction):
177 // - and next delta significant (at least twice) bigger:
181 // - and next delta is nearly same:
187 INLINE void InterpolateUp(int ch)
189 if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass
191 const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val
192 const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :)
196 if(id1>0) // curr delta positive
199 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
202 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
204 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
206 else // curr delta negative
209 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
212 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
214 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
218 if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass
222 s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L;
223 if(s_chan[ch].sinc<=0x8000)
224 s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1));
225 else s_chan[ch].SB[29]+=s_chan[ch].SB[28];
227 else // no flags? add bigger val (if possible), calc smaller step, set flag1
228 s_chan[ch].SB[29]+=s_chan[ch].SB[28];
232 // even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm
235 INLINE void InterpolateDown(int ch)
237 if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val?
239 s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight
240 if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals?
241 s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight
245 ////////////////////////////////////////////////////////////////////////
246 // helpers for gauss interpolation
248 #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos])
249 #define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
253 ////////////////////////////////////////////////////////////////////////
257 ////////////////////////////////////////////////////////////////////////
258 // START SOUND... called by main thread to setup a new sound on a channel
259 ////////////////////////////////////////////////////////////////////////
261 INLINE void StartSound(int ch)
266 // fussy timing issues - do in VoiceOn
267 //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start
268 //s_chan[ch].bStop=0;
271 s_chan[ch].SB[26]=0; // init mixing vars
273 s_chan[ch].iSBPos=28;
275 s_chan[ch].SB[29]=0; // init our interpolation helpers
278 if(iUseInterpolation>=2) // gauss interpolation?
279 {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding
280 else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding
282 dwNewChannel&=~(1<<ch); // clear new channel bit
285 ////////////////////////////////////////////////////////////////////////
286 // ALL KIND OF HELPERS
287 ////////////////////////////////////////////////////////////////////////
289 INLINE void VoiceChangeFrequency(int ch)
291 s_chan[ch].iUsedFreq=s_chan[ch].iActFreq; // -> take it and calc steps
292 s_chan[ch].sinc=s_chan[ch].iRawPitch<<4;
293 if(!s_chan[ch].sinc) s_chan[ch].sinc=1;
294 if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simle imterpolation mode: set flag
297 ////////////////////////////////////////////////////////////////////////
299 INLINE int FModChangeFrequency(int ch,int ns)
301 int NP=s_chan[ch].iRawPitch;
304 NP=((32768L+iFMod[ns])*NP)/32768L;
306 if(NP>0x3fff) NP=0x3fff;
309 NP=(44100L*NP)/(4096L); // calc frequency
311 s_chan[ch].iActFreq=NP;
312 s_chan[ch].iUsedFreq=NP;
313 sinc=(((NP/10)<<16)/4410);
315 if(iUseInterpolation==1) // freq change in simple interpolation mode
322 ////////////////////////////////////////////////////////////////////////
324 INLINE void StoreInterpolationVal(int ch,int fa)
326 if(s_chan[ch].bFMod==2) // fmod freq channel
327 s_chan[ch].SB[29]=fa;
332 if(iUseInterpolation>=2) // gauss/cubic interpolation
334 int gpos = s_chan[ch].SB[28];
337 s_chan[ch].SB[28] = gpos;
340 if(iUseInterpolation==1) // simple interpolation
342 s_chan[ch].SB[28] = 0;
343 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'
344 s_chan[ch].SB[30] = s_chan[ch].SB[31];
345 s_chan[ch].SB[31] = fa;
346 s_chan[ch].SB[32] = 1; // -> flag: calc new interolation
348 else s_chan[ch].SB[29]=fa; // no interpolation
352 ////////////////////////////////////////////////////////////////////////
354 INLINE int iGetInterpolationVal(int ch)
358 if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29];
360 switch(iUseInterpolation)
362 //--------------------------------------------------//
363 case 3: // cubic interpolation
366 xd = ((s_chan[ch].spos) >> 1)+1;
367 gpos = s_chan[ch].SB[28];
369 fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0;
370 fa *= (xd - (2<<15)) / 6;
372 fa += gval(2) - gval(1) - gval(1) + gval0;
373 fa *= (xd - (1<<15)) >> 1;
375 fa += gval(1) - gval0;
381 //--------------------------------------------------//
382 case 2: // gauss interpolation
385 vl = (s_chan[ch].spos >> 6) & ~3;
386 gpos = s_chan[ch].SB[28];
387 vr=(gauss[vl]*gval0)&~2047;
388 vr+=(gauss[vl+1]*gval(1))&~2047;
389 vr+=(gauss[vl+2]*gval(2))&~2047;
390 vr+=(gauss[vl+3]*gval(3))&~2047;
393 //--------------------------------------------------//
394 case 1: // simple interpolation
396 if(s_chan[ch].sinc<0x10000L) // -> upsampling?
397 InterpolateUp(ch); // --> interpolate up
398 else InterpolateDown(ch); // --> else down
399 fa=s_chan[ch].SB[29];
401 //--------------------------------------------------//
402 default: // no interpolation
404 fa=s_chan[ch].SB[29];
406 //--------------------------------------------------//
412 static void do_irq(void)
414 if(!(spuStat & STAT_IRQ))
417 if(irqCallback) irqCallback();
421 static void decode_block_data(int *dest, const unsigned char *src, int predict_nr, int shift_factor)
424 int fa, s_1, s_2, d, s;
429 for (nSample = 0; nSample < 28; src++)
432 s = (int)(signed short)((d & 0x0f) << 12);
434 fa = s >> shift_factor;
435 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
438 dest[nSample++] = fa;
440 s = (int)(signed short)((d & 0xf0) << 8);
441 fa = s >> shift_factor;
442 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
445 dest[nSample++] = fa;
449 static int decode_block(int ch)
451 unsigned char *start;
452 int predict_nr,shift_factor,flags;
455 start=s_chan[ch].pCurr; // set up the current pos
456 if(start == (unsigned char*)-1 || // special "stop" sign
457 (dwPendingChanOff&(1<<ch)))
459 dwChannelOn&=~(1<<ch); // -> turn everything off
460 dwPendingChanOff&=~(1<<ch);
462 s_chan[ch].ADSRX.EnvelopeVol=0;
463 return 0; // -> and done for this channel
466 //////////////////////////////////////////// irq check
470 if(pSpuIrq == start) // irq address reached?
472 do_irq(); // -> call main emu
477 predict_nr=(int)start[0];
478 shift_factor=predict_nr&0xf;
481 decode_block_data(s_chan[ch].SB, start + 2, predict_nr, shift_factor);
483 //////////////////////////////////////////// flag handler
487 s_chan[ch].pLoop=start; // loop adress
490 if(flags&1) // 1: stop/loop
493 dwPendingChanOff|=1<<ch;
495 start = s_chan[ch].pLoop;
498 if (start - spuMemC >= 0x80000)
499 start = (unsigned char*)-1;
501 s_chan[ch].pCurr = start; // store values for next cycle
506 // do block, but ignore sample data
507 static int skip_block(int ch)
509 unsigned char *start = s_chan[ch].pCurr;
510 int flags = start[1];
513 // Tron Bonne hack, probably wrong (could be wrong memory contents..)
514 if(flags & ~7) flags = 0;
523 s_chan[ch].pLoop=start;
525 s_chan[ch].pCurr += 16;
528 s_chan[ch].pCurr = s_chan[ch].pLoop;
533 #define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
534 static int do_samples_##name(int ch, int ns, int ns_to) \
536 int sinc = s_chan[ch].sinc; \
537 int spos = s_chan[ch].spos; \
538 int sbpos = s_chan[ch].iSBPos; \
539 int *SB = s_chan[ch].SB; \
544 for (; ns < ns_to; ns++) \
548 while (spos >= 0x10000) \
553 d = decode_block(ch); \
554 if(d && iSPUIRQWait) \
571 s_chan[ch].sinc = sinc; \
572 s_chan[ch].spos = spos; \
573 s_chan[ch].iSBPos = sbpos; \
579 #define fmod_recv_check \
580 if(s_chan[ch].bFMod==1 && iFMod[ns]) \
581 sinc = FModChangeFrequency(ch,ns)
583 make_do_samples(default, fmod_recv_check, ,
584 StoreInterpolationVal(ch, fa),
585 ChanBuf[ns] = iGetInterpolationVal(ch), )
586 make_do_samples(noint, , fa = s_chan[ch].SB[29], , ChanBuf[ns] = fa, s_chan[ch].SB[29] = fa)
588 #define simple_interp_store \
589 s_chan[ch].SB[28] = 0; \
590 s_chan[ch].SB[29] = s_chan[ch].SB[30]; \
591 s_chan[ch].SB[30] = s_chan[ch].SB[31]; \
592 s_chan[ch].SB[31] = fa; \
593 s_chan[ch].SB[32] = 1
595 #define simple_interp_get \
596 if(sinc<0x10000) /* -> upsampling? */ \
597 InterpolateUp(ch); /* --> interpolate up */ \
598 else InterpolateDown(ch); /* --> else down */ \
599 ChanBuf[ns] = s_chan[ch].SB[29]
601 make_do_samples(simple, , ,
602 simple_interp_store, simple_interp_get, )
604 static int do_samples_noise(int ch, int ns, int ns_to)
606 int level, shift, bit;
608 s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns);
609 while (s_chan[ch].spos >= 28*0x10000)
612 s_chan[ch].spos -= 28*0x10000;
615 // modified from DrHell/shalma, no fraction
616 level = (spuCtrl >> 10) & 0x0f;
617 level = 0x8000 >> level;
619 for (; ns < ns_to; ns++)
622 if (dwNoiseCount >= level)
624 dwNoiseCount -= level;
625 shift = (dwNoiseVal >> 10) & 0x1f;
626 bit = (0x69696969 >> shift) & 1;
627 if (dwNoiseVal & 0x8000)
629 dwNoiseVal = (dwNoiseVal << 1) | bit;
632 ChanBuf[ns] = (signed short)dwNoiseVal;
640 extern void mix_chan(int start, int count, int lv, int rv);
641 extern void mix_chan_rvb(int start, int count, int lv, int rv);
643 static void mix_chan(int start, int count, int lv, int rv)
645 int *dst = SSumLR + start * 2;
646 const int *src = ChanBuf + start;
653 l = (sval * lv) >> 14;
654 r = (sval * rv) >> 14;
660 static void mix_chan_rvb(int start, int count, int lv, int rv)
662 int *dst = SSumLR + start * 2;
663 int *drvb = sRVBStart + start * 2;
664 const int *src = ChanBuf + start;
671 l = (sval * lv) >> 14;
672 r = (sval * rv) >> 14;
681 ////////////////////////////////////////////////////////////////////////
683 // here is the main job handler... thread, timer or direct func call
684 // basically the whole sound processing is done in this fat func!
685 ////////////////////////////////////////////////////////////////////////
687 // 5 ms waiting phase, if buffer is full and no new sound has to get started
688 // .. can be made smaller (smallest val: 1 ms), but bigger waits give
689 // better performance
694 ////////////////////////////////////////////////////////////////////////
696 static void *MAINThread(void *arg)
698 int volmult = iVolume;
699 int ns,ns_from,ns_to;
703 while(!bEndThread) // until we are shutting down
705 // ok, at the beginning we are looking if there is
706 // enuff free place in the dsound/oss buffer to
707 // fill in new data, or if there is a new channel to start.
708 // if not, we wait (thread) or return (timer/spuasync)
709 // until enuff free place is available/a new channel gets
712 if(dwNewChannel) // new channel should start immedately?
713 { // (at least one bit 0 ... MAXCHANNEL is set?)
714 iSecureStart++; // -> set iSecure
715 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)
717 else iSecureStart=0; // 0: no new channel should start
719 while(!iSecureStart && !bEndThread && // no new start? no thread end?
720 (SoundGetBytesBuffered()>TESTSIZE)) // and still enuff data in sound buffer?
722 iSecureStart=0; // reset secure
724 if(iUseTimer) return 0; // linux no-thread mode? bye
725 usleep(PAUSE_L); // else sleep for x ms (linux)
727 if(dwNewChannel) iSecureStart=1; // if a new channel kicks in (or, of course, sound buffer runs low), we will leave the loop
730 //--------------------------------------------------// continue from irq handling in timer mode?
735 if(lastch>=0) // will be -1 if no continue is pending
737 ch=lastch; ns_from=lastns; lastch=-1; // -> setup all kind of vars to continue
740 //--------------------------------------------------//
741 //- main channel loop -//
742 //--------------------------------------------------//
744 for(;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel
746 if(dwNewChannel&(1<<ch)) StartSound(ch); // start new sound
747 if(!(dwChannelOn&(1<<ch))) continue; // channel not playing? next
749 if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency?
750 VoiceChangeFrequency(ch);
752 if(s_chan[ch].bNoise)
753 d=do_samples_noise(ch, ns_from, ns_to);
754 else if(s_chan[ch].bFMod==2 || (s_chan[ch].bFMod==0 && iUseInterpolation==0))
755 d=do_samples_noint(ch, ns_from, ns_to);
756 else if(s_chan[ch].bFMod==0 && iUseInterpolation==1)
757 d=do_samples_simple(ch, ns_from, ns_to);
759 d=do_samples_default(ch, ns_from, ns_to);
767 MixADSR(ch, ns_from, ns_to);
769 if(s_chan[ch].bFMod==2) // fmod freq channel
770 memcpy(iFMod, ChanBuf, sizeof(iFMod));
771 else if(s_chan[ch].bRVBActive)
772 mix_chan_rvb(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
774 mix_chan(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
778 // advance "stopped" channels that can cause irqs
779 // (all chans are always playing on the real thing..)
780 if(!bIRQReturn && (spuCtrl&CTRL_IRQ))
781 for(ch=0;ch<MAXCHAN;ch++)
783 if(dwChannelOn&(1<<ch)) continue; // already handled
784 if(s_chan[ch].pCurr == (unsigned char *)-1)
786 if(s_chan[ch].pCurr > pSpuIrq && s_chan[ch].pLoop > pSpuIrq)
789 if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency?
790 VoiceChangeFrequency(ch);
792 s_chan[ch].spos += s_chan[ch].sinc * NSSIZE;
793 while(s_chan[ch].spos >= 28 * 0x10000)
795 unsigned char *start=s_chan[ch].pCurr;
797 bIRQReturn |= skip_block(ch);
798 if(start == s_chan[ch].pCurr)
801 s_chan[ch].pCurr=(unsigned char *)-1;
805 s_chan[ch].spos -= 28 * 0x10000;
809 if(bIRQReturn && iSPUIRQWait) // special return for "spu irq - wait for cpu action"
815 DWORD dwWatchTime=timeGetTime_spu()+2500;
817 while(iSpuAsyncWait && !bEndThread &&
818 timeGetTime_spu()<dwWatchTime)
829 //---------------------------------------------------//
830 //- here we have another 1 ms of sound data
831 //---------------------------------------------------//
832 // mix XA infos (if any)
836 ///////////////////////////////////////////////////////
837 // mix all channels (including reverb) into one buffer
842 if((spuCtrl&0x4000)==0) // muted? (rare, don't optimize for this)
844 memset(pS, 0, NSSIZE * 2 * sizeof(pS[0]));
848 for (ns = 0; ns < NSSIZE*2; )
850 d = SSumLR[ns]; SSumLR[ns] = 0;
851 d = d * volmult >> 10;
856 d = SSumLR[ns]; SSumLR[ns] = 0;
857 d = d * volmult >> 10;
863 //////////////////////////////////////////////////////
864 // special irq handling in the decode buffers (0x0000-0x1000)
866 // the decode buffers are located in spu memory in the following way:
867 // 0x0000-0x03ff CD audio left
868 // 0x0400-0x07ff CD audio right
869 // 0x0800-0x0bff Voice 1
870 // 0x0c00-0x0fff Voice 3
871 // and decoded data is 16 bit for one sample
873 // even if voices 1/3 are off or no cd audio is playing, the internal
874 // play positions will move on and wrap after 0x400 bytes.
875 // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
876 // increase this pointer on each sample by 2 bytes. If this pointer
877 // (or 0x400 offsets of this pointer) hits the spuirq address, we generate
878 // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here
879 // in some of Peops timer modes. So: we ignore this option here (for now).
883 for(ns=0;ns<NSSIZE;ns++)
885 if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000)
889 if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2)
893 pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC;
900 // wanna have around 1/60 sec (16.666 ms) updates
901 if (iCycle++ > 16/FRAG_MSECS)
903 SoundFeedStreamData((unsigned char *)pSpuBuffer,
904 ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer));
905 pS = (short *)pSpuBuffer;
910 // end of big main loop...
917 // SPU ASYNC... even newer epsxe func
918 // 1 time every 'cycle' cycles... harhar
920 void CALLBACK SPUasync(unsigned long cycle)
925 if(iSpuAsyncWait<=16/FRAG_MSECS) return;
929 if(iUseTimer==2) // special mode, only used in Linux by this spu (or if you enable the experimental Windows mode)
931 if(!bSpuInit) return; // -> no init, no call
933 MAINThread(0); // -> linux high-compat mode
935 // abuse iSpuAsyncWait mechanism to reduce calls to above function
936 // to make it do larger chunks
937 // note: doing it less often than once per frame causes skips
942 // SPU UPDATE... new epsxe func
943 // 1 time every 32 hsync lines
944 // (312/32)x50 in pal
945 // (262/32)x60 in ntsc
947 // since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will
948 // leave that func in the linux port, until epsxe linux is using
949 // the async function as well
951 void CALLBACK SPUupdate(void)
958 void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap)
961 if(!xap->freq) return; // no xa freq ? bye
963 FeedXA(xap); // call main XA feeder
967 void CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
970 if (nbytes<=0) return;
972 FeedCDDA((unsigned char *)pcm, nbytes);
975 // SETUPTIMER: init of certain buffers and threads/timers
976 void SetupTimer(void)
978 memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers
979 memset(iFMod,0,NSSIZE*sizeof(int));
980 pS=(short *)pSpuBuffer; // setup soundbuffer pointer
982 bEndThread=0; // init thread vars
984 bSpuInit=1; // flag: we are inited
986 if(!iUseTimer) // linux: use thread
988 pthread_create(&thread, NULL, MAINThread, NULL);
992 // REMOVETIMER: kill threads/timers
993 void RemoveTimer(void)
995 bEndThread=1; // raise flag to end thread
997 if(!iUseTimer) // linux tread?
1000 while(!bThreadEnded && i<2000) {usleep(1000L);i++;} // -> wait until thread has ended
1001 if(thread!=(pthread_t)-1) {pthread_cancel(thread);thread=(pthread_t)-1;} // -> cancel thread anyway
1004 bThreadEnded=0; // no more spu is running
1008 // SETUPSTREAMS: init most of the spu buffers
1009 void SetupStreams(void)
1013 pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer
1015 if(iUseReverb==1) i=88200*2;
1018 sRVBStart = (int *)malloc(i*4); // alloc reverb buffer
1019 memset(sRVBStart,0,i*4);
1020 sRVBEnd = sRVBStart + i;
1021 sRVBPlay = sRVBStart;
1023 XAStart = // alloc xa buffer
1024 (uint32_t *)malloc(44100 * sizeof(uint32_t));
1025 XAEnd = XAStart + 44100;
1029 CDDAStart = // alloc cdda buffer
1030 (uint32_t *)malloc(16384 * sizeof(uint32_t));
1031 CDDAEnd = CDDAStart + 16384;
1032 CDDAPlay = CDDAStart;
1033 CDDAFeed = CDDAStart;
1035 for(i=0;i<MAXCHAN;i++) // loop sound channels
1037 // we don't use mutex sync... not needed, would only
1039 // s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL);
1040 s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain
1041 s_chan[i].pLoop=spuMemC;
1042 s_chan[i].pStart=spuMemC;
1043 s_chan[i].pCurr=spuMemC;
1046 pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address
1049 // REMOVESTREAMS: free most buffer
1050 void RemoveStreams(void)
1052 free(pSpuBuffer); // free mixing buffer
1054 free(sRVBStart); // free reverb buffer
1056 free(XAStart); // free XA buffer
1058 free(CDDAStart); // free CDDA buffer
1064 // SPUINIT: this func will be called first by the main emu
1065 long CALLBACK SPUinit(void)
1067 spuMemC = (unsigned char *)spuMem; // just small setup
1068 memset((void *)&rvb, 0, sizeof(REVERBInfo));
1072 spuAddr = 0xffffffff;
1075 spuMemC = (unsigned char *)spuMem;
1077 memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN));
1082 //ReadConfigSPU(); // read user stuff
1083 SetupStreams(); // prepare streaming
1088 // SPUOPEN: called by main emu after init
1089 long CALLBACK SPUopen(void)
1091 if (bSPUIsOpen) return 0; // security for some stupid main emus
1093 SetupSound(); // setup sound (before init!)
1094 SetupTimer(); // timer for feeding data
1098 return PSE_SPU_ERR_SUCCESS;
1101 // SPUCLOSE: called before shutdown
1102 long CALLBACK SPUclose(void)
1104 if (!bSPUIsOpen) return 0; // some security
1106 bSPUIsOpen = 0; // no more open
1108 RemoveTimer(); // no more feeding
1109 RemoveSound(); // no more sound handling
1114 // SPUSHUTDOWN: called by main emu on final exit
1115 long CALLBACK SPUshutdown(void)
1118 RemoveStreams(); // no more streaming
1123 // SPUTEST: we don't test, we are always fine ;)
1124 long CALLBACK SPUtest(void)
1129 // SPUCONFIGURE: call config dialog
1130 long CALLBACK SPUconfigure(void)
1135 // StartCfgTool("CFG");
1140 // SPUABOUT: show about window
1141 void CALLBACK SPUabout(void)
1146 // StartCfgTool("ABOUT");
1151 // this functions will be called once,
1152 // passes a callback that should be called on SPU-IRQ/cdda volume change
1153 void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void))
1155 irqCallback = callback;
1158 void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short))
1160 cddavCallback = CDDAVcallback;
1163 // COMMON PLUGIN INFO FUNCS
1165 char * CALLBACK PSEgetLibName(void)
1167 return _(libraryName);
1170 unsigned long CALLBACK PSEgetLibType(void)
1175 unsigned long CALLBACK PSEgetLibVersion(void)
1177 return (1 << 16) | (6 << 8);
1180 char * SPUgetLibInfos(void)
1182 return _(libraryInfo);
1187 void spu_get_debug_info(int *chans_out, int *fmod_chans_out, int *noise_chans_out)
1189 int ch = 0, fmod_chans = 0, noise_chans = 0;
1191 for(;ch<MAXCHAN;ch++)
1193 if (!(dwChannelOn & (1<<ch)))
1195 if (s_chan[ch].bFMod == 2)
1196 fmod_chans |= 1 << ch;
1197 if (s_chan[ch].bNoise)
1198 noise_chans |= 1 << ch;
1201 *chans_out = dwChannelOn;
1202 *fmod_chans_out = fmod_chans;
1203 *noise_chans_out = noise_chans;
1206 // vim:shiftwidth=1:expandtab