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"
27 #include "dsoundoss.h"
32 #define _(x) gettext(x)
39 #ifdef __ARM_ARCH_7A__
40 #define ssat32_to_16(v) \
41 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
43 #define ssat32_to_16(v) do { \
44 if (v < -32768) v = -32768; \
45 else if (v > 32767) v = 32767; \
50 #if defined (USEMACOSX)
51 static char * libraryName = N_("Mac OS X Sound");
52 #elif defined (USEALSA)
53 static char * libraryName = N_("ALSA Sound");
54 #elif defined (USEOSS)
55 static char * libraryName = N_("OSS Sound");
56 #elif defined (USESDL)
57 static char * libraryName = N_("SDL Sound");
58 #elif defined (USEPULSEAUDIO)
59 static char * libraryName = N_("PulseAudio Sound");
61 static char * libraryName = N_("NULL Sound");
64 static char * libraryInfo = N_("P.E.Op.S. Sound Driver V1.7\nCoded by Pete Bernert and the P.E.Op.S. team\n");
69 // psx buffer / addresses
71 unsigned short regArea[10000];
72 unsigned short spuMem[256*1024];
73 unsigned char * spuMemC;
74 unsigned char * pSpuIrq=0;
75 unsigned char * pSpuBuffer;
76 unsigned char * pMixIrq=0;
80 int iVolume=768; // 1024 is 1.0
86 int iUseInterpolation=2;
88 // MAIN infos struct for each channel
90 SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling)
93 unsigned int dwNoiseVal; // global noise generator
94 unsigned int dwNoiseCount;
97 unsigned short spuCtrl=0; // some vars to store psx reg infos
98 unsigned short spuStat=0;
99 unsigned short spuIrq=0;
100 unsigned long spuAddr=0xffffffff; // address into spu mem
104 unsigned int dwNewChannel=0; // flags for faster testing, if new channel starts
105 unsigned int dwChannelOn=0; // not silent channels
106 unsigned int dwPendingChanOff=0;
107 unsigned int dwChannelDead=0; // silent+not useful channels
109 void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq
110 void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0;
112 // certain globals (were local before, but with the new timeproc I need em global)
114 static const int f[8][2] = { { 0, 0 },
119 int ChanBuf[NSSIZE+3];
120 int SSumLR[(NSSIZE+3)*2];
125 int lastch=-1; // last channel processed on spu irq in timer mode
126 static int lastns=0; // last ns pos
128 #define CDDA_BUFFER_SIZE (16384 * sizeof(uint32_t)) // must be power of 2
130 ////////////////////////////////////////////////////////////////////////
132 ////////////////////////////////////////////////////////////////////////
134 // dirty inline func includes
139 ////////////////////////////////////////////////////////////////////////
140 // helpers for simple interpolation
143 // easy interpolation on upsampling, no special filter, just "Pete's common sense" tm
145 // instead of having n equal sample values in a row like:
149 // we compare the current delta change with the next delta change.
151 // if curr_delta is positive,
153 // - and next delta is smaller (or changing direction):
157 // - and next delta significant (at least twice) bigger:
161 // - and next delta is nearly same:
166 // if curr_delta is negative,
168 // - and next delta is smaller (or changing direction):
172 // - and next delta significant (at least twice) bigger:
176 // - and next delta is nearly same:
182 INLINE void InterpolateUp(int ch)
184 if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass
186 const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val
187 const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :)
191 if(id1>0) // curr delta positive
194 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
197 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
199 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
201 else // curr delta negative
204 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
207 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
209 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
213 if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass
217 s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L;
218 //if(s_chan[ch].sinc<=0x8000)
219 // s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1));
221 s_chan[ch].SB[29]+=s_chan[ch].SB[28];
223 else // no flags? add bigger val (if possible), calc smaller step, set flag1
224 s_chan[ch].SB[29]+=s_chan[ch].SB[28];
228 // even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm
231 INLINE void InterpolateDown(int ch)
233 if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val?
235 s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight
236 if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals?
237 s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight
241 ////////////////////////////////////////////////////////////////////////
242 // helpers for gauss interpolation
244 #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos])
245 #define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
249 ////////////////////////////////////////////////////////////////////////
253 ////////////////////////////////////////////////////////////////////////
254 // START SOUND... called by main thread to setup a new sound on a channel
255 ////////////////////////////////////////////////////////////////////////
257 INLINE void StartSound(int ch)
262 // fussy timing issues - do in VoiceOn
263 //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start
264 //s_chan[ch].bStop=0;
267 s_chan[ch].SB[26]=0; // init mixing vars
269 s_chan[ch].iSBPos=28;
271 s_chan[ch].SB[29]=0; // init our interpolation helpers
274 if(iUseInterpolation>=2) // gauss interpolation?
275 {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding
276 else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding
278 dwNewChannel&=~(1<<ch); // clear new channel bit
281 ////////////////////////////////////////////////////////////////////////
282 // ALL KIND OF HELPERS
283 ////////////////////////////////////////////////////////////////////////
285 INLINE int FModChangeFrequency(int ch,int ns)
287 unsigned int NP=s_chan[ch].iRawPitch;
290 NP=((32768L+iFMod[ns])*NP)/32768L;
292 if(NP>0x3fff) NP=0x3fff;
295 sinc=NP<<4; // calc frequency
296 if(iUseInterpolation==1) // freq change in simple interpolation mode
303 ////////////////////////////////////////////////////////////////////////
305 INLINE void StoreInterpolationVal(int ch,int fa)
307 if(s_chan[ch].bFMod==2) // fmod freq channel
308 s_chan[ch].SB[29]=fa;
313 if(iUseInterpolation>=2) // gauss/cubic interpolation
315 int gpos = s_chan[ch].SB[28];
318 s_chan[ch].SB[28] = gpos;
321 if(iUseInterpolation==1) // simple interpolation
323 s_chan[ch].SB[28] = 0;
324 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'
325 s_chan[ch].SB[30] = s_chan[ch].SB[31];
326 s_chan[ch].SB[31] = fa;
327 s_chan[ch].SB[32] = 1; // -> flag: calc new interolation
329 else s_chan[ch].SB[29]=fa; // no interpolation
333 ////////////////////////////////////////////////////////////////////////
335 INLINE int iGetInterpolationVal(int ch, int spos)
339 if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29];
341 switch(iUseInterpolation)
343 //--------------------------------------------------//
344 case 3: // cubic interpolation
348 gpos = s_chan[ch].SB[28];
350 fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0;
351 fa *= (xd - (2<<15)) / 6;
353 fa += gval(2) - gval(1) - gval(1) + gval0;
354 fa *= (xd - (1<<15)) >> 1;
356 fa += gval(1) - gval0;
362 //--------------------------------------------------//
363 case 2: // gauss interpolation
366 vl = (spos >> 6) & ~3;
367 gpos = s_chan[ch].SB[28];
368 vr=(gauss[vl]*gval0)&~2047;
369 vr+=(gauss[vl+1]*gval(1))&~2047;
370 vr+=(gauss[vl+2]*gval(2))&~2047;
371 vr+=(gauss[vl+3]*gval(3))&~2047;
374 //--------------------------------------------------//
375 case 1: // simple interpolation
377 if(s_chan[ch].sinc<0x10000L) // -> upsampling?
378 InterpolateUp(ch); // --> interpolate up
379 else InterpolateDown(ch); // --> else down
380 fa=s_chan[ch].SB[29];
382 //--------------------------------------------------//
383 default: // no interpolation
385 fa=s_chan[ch].SB[29];
387 //--------------------------------------------------//
393 static void do_irq(void)
395 //if(!(spuStat & STAT_IRQ))
397 spuStat |= STAT_IRQ; // asserted status?
398 if(irqCallback) irqCallback();
402 static void decode_block_data(int *dest, const unsigned char *src, int predict_nr, int shift_factor)
405 int fa, s_1, s_2, d, s;
410 for (nSample = 0; nSample < 28; src++)
413 s = (int)(signed short)((d & 0x0f) << 12);
415 fa = s >> shift_factor;
416 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
419 dest[nSample++] = fa;
421 s = (int)(signed short)((d & 0xf0) << 8);
422 fa = s >> shift_factor;
423 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
426 dest[nSample++] = fa;
430 static int decode_block(int ch)
432 unsigned char *start;
433 int predict_nr,shift_factor,flags;
436 start=s_chan[ch].pCurr; // set up the current pos
437 if(dwPendingChanOff&(1<<ch))
439 dwChannelOn&=~(1<<ch); // -> turn everything off
440 dwPendingChanOff&=~(1<<ch);
442 s_chan[ch].ADSRX.EnvelopeVol=0;
445 //////////////////////////////////////////// irq check
449 if(pSpuIrq == start) // irq address reached?
451 do_irq(); // -> call main emu
456 predict_nr=(int)start[0];
457 shift_factor=predict_nr&0xf;
460 decode_block_data(s_chan[ch].SB, start + 2, predict_nr, shift_factor);
462 //////////////////////////////////////////// flag handler
466 s_chan[ch].pLoop=start; // loop adress
469 if(flags&1) // 1: stop/loop
472 dwPendingChanOff|=1<<ch;
474 start = s_chan[ch].pLoop;
477 if (start - spuMemC >= 0x80000) {
480 printf("ch%d oflow\n", ch);
483 s_chan[ch].pCurr = start; // store values for next cycle
484 s_chan[ch].bJump = flags & 1;
489 // do block, but ignore sample data
490 static int skip_block(int ch)
492 unsigned char *start = s_chan[ch].pCurr;
493 int flags = start[1];
503 s_chan[ch].pLoop = start;
505 s_chan[ch].pCurr += 16;
508 s_chan[ch].pCurr = s_chan[ch].pLoop;
510 s_chan[ch].bJump = flags & 1;
514 #define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
515 static int do_samples_##name(int ch, int ns, int ns_to) \
517 int sinc = s_chan[ch].sinc; \
518 int spos = s_chan[ch].spos; \
519 int sbpos = s_chan[ch].iSBPos; \
520 int *SB = s_chan[ch].SB; \
525 for (; ns < ns_to; ns++) \
529 while (spos >= 0x10000) \
534 d = decode_block(ch); \
535 if(d && iSPUIRQWait) \
552 s_chan[ch].sinc = sinc; \
553 s_chan[ch].spos = spos; \
554 s_chan[ch].iSBPos = sbpos; \
560 #define fmod_recv_check \
561 if(s_chan[ch].bFMod==1 && iFMod[ns]) \
562 sinc = FModChangeFrequency(ch,ns)
564 make_do_samples(default, fmod_recv_check, ,
565 StoreInterpolationVal(ch, fa),
566 ChanBuf[ns] = iGetInterpolationVal(ch, spos), )
567 make_do_samples(noint, , fa = s_chan[ch].SB[29], , ChanBuf[ns] = fa, s_chan[ch].SB[29] = fa)
569 #define simple_interp_store \
570 s_chan[ch].SB[28] = 0; \
571 s_chan[ch].SB[29] = s_chan[ch].SB[30]; \
572 s_chan[ch].SB[30] = s_chan[ch].SB[31]; \
573 s_chan[ch].SB[31] = fa; \
574 s_chan[ch].SB[32] = 1
576 #define simple_interp_get \
577 if(sinc<0x10000) /* -> upsampling? */ \
578 InterpolateUp(ch); /* --> interpolate up */ \
579 else InterpolateDown(ch); /* --> else down */ \
580 ChanBuf[ns] = s_chan[ch].SB[29]
582 make_do_samples(simple, , ,
583 simple_interp_store, simple_interp_get, )
585 static int do_samples_noise(int ch, int ns, int ns_to)
587 int level, shift, bit;
589 s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns);
590 while (s_chan[ch].spos >= 28*0x10000)
593 s_chan[ch].spos -= 28*0x10000;
596 // modified from DrHell/shalma, no fraction
597 level = (spuCtrl >> 10) & 0x0f;
598 level = 0x8000 >> level;
600 for (; ns < ns_to; ns++)
603 if (dwNoiseCount >= level)
605 dwNoiseCount -= level;
606 shift = (dwNoiseVal >> 10) & 0x1f;
607 bit = (0x69696969 >> shift) & 1;
608 if (dwNoiseVal & 0x8000)
610 dwNoiseVal = (dwNoiseVal << 1) | bit;
613 ChanBuf[ns] = (signed short)dwNoiseVal;
620 // asm code; lv and rv must be 0-3fff
621 extern void mix_chan(int start, int count, int lv, int rv);
622 extern void mix_chan_rvb(int start, int count, int lv, int rv);
624 static void mix_chan(int start, int count, int lv, int rv)
626 int *dst = SSumLR + start * 2;
627 const int *src = ChanBuf + start;
634 l = (sval * lv) >> 14;
635 r = (sval * rv) >> 14;
641 static void mix_chan_rvb(int start, int count, int lv, int rv)
643 int *dst = SSumLR + start * 2;
644 int *drvb = sRVBStart + start * 2;
645 const int *src = ChanBuf + start;
652 l = (sval * lv) >> 14;
653 r = (sval * rv) >> 14;
662 ////////////////////////////////////////////////////////////////////////
664 // here is the main job handler...
665 // basically the whole sound processing is done in this fat func!
666 ////////////////////////////////////////////////////////////////////////
668 static int do_samples(void)
670 int volmult = iVolume;
671 int ns,ns_from,ns_to;
677 // ok, at the beginning we are looking if there is
678 // enuff free place in the dsound/oss buffer to
679 // fill in new data, or if there is a new channel to start.
680 // if not, we wait (thread) or return (timer/spuasync)
681 // until enuff free place is available/a new channel gets
684 if(!dwNewChannel && SoundGetBytesBuffered()) // still enuff data in sound buffer?
689 //--------------------------------------------------// continue from irq handling in timer mode?
694 if(lastch>=0) // will be -1 if no continue is pending
696 ch=lastch; ns_from=lastns; lastch=-1; // -> setup all kind of vars to continue
699 silentch=~(dwChannelOn|dwNewChannel);
701 //--------------------------------------------------//
702 //- main channel loop -//
703 //--------------------------------------------------//
705 for(;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel
707 if(dwNewChannel&(1<<ch)) StartSound(ch); // start new sound
708 if(!(dwChannelOn&(1<<ch))) continue; // channel not playing? next
710 if(s_chan[ch].bNoise)
711 d=do_samples_noise(ch, ns_from, ns_to);
712 else if(s_chan[ch].bFMod==2 || (s_chan[ch].bFMod==0 && iUseInterpolation==0))
713 d=do_samples_noint(ch, ns_from, ns_to);
714 else if(s_chan[ch].bFMod==0 && iUseInterpolation==1)
715 d=do_samples_simple(ch, ns_from, ns_to);
717 d=do_samples_default(ch, ns_from, ns_to);
727 MixADSR(ch, ns_from, ns_to);
729 if(s_chan[ch].bFMod==2) // fmod freq channel
730 memcpy(iFMod, ChanBuf, sizeof(iFMod));
731 else if(s_chan[ch].bRVBActive)
732 mix_chan_rvb(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
734 mix_chan(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
738 // advance "stopped" channels that can cause irqs
739 // (all chans are always playing on the real thing..)
740 if(!bIRQReturn && (spuCtrl&CTRL_IRQ))
741 for(ch=0;ch<MAXCHAN;ch++)
743 if(!(silentch&(1<<ch))) continue; // already handled
744 if(dwChannelDead&(1<<ch)) continue;
745 if(s_chan[ch].pCurr > pSpuIrq && s_chan[ch].pLoop > pSpuIrq)
748 s_chan[ch].spos += s_chan[ch].sinc * NSSIZE;
749 while(s_chan[ch].spos >= 28 * 0x10000)
751 unsigned char *start = s_chan[ch].pCurr;
753 // no need for bIRQReturn since the channel is silent
754 iSpuAsyncWait |= skip_block(ch);
755 if(start == s_chan[ch].pCurr)
758 dwChannelDead |= 1<<ch;
763 s_chan[ch].spos -= 28 * 0x10000;
767 if(bIRQReturn && iSPUIRQWait) // special return for "spu irq - wait for cpu action"
775 //---------------------------------------------------//
776 //- here we have another 1 ms of sound data
777 //---------------------------------------------------//
778 // mix XA infos (if any)
782 ///////////////////////////////////////////////////////
783 // mix all channels (including reverb) into one buffer
788 if((spuCtrl&0x4000)==0) // muted? (rare, don't optimize for this)
790 memset(pS, 0, NSSIZE * 2 * sizeof(pS[0]));
794 for (ns = 0; ns < NSSIZE*2; )
796 d = SSumLR[ns]; SSumLR[ns] = 0;
797 d = d * volmult >> 10;
802 d = SSumLR[ns]; SSumLR[ns] = 0;
803 d = d * volmult >> 10;
809 //////////////////////////////////////////////////////
810 // special irq handling in the decode buffers (0x0000-0x1000)
812 // the decode buffers are located in spu memory in the following way:
813 // 0x0000-0x03ff CD audio left
814 // 0x0400-0x07ff CD audio right
815 // 0x0800-0x0bff Voice 1
816 // 0x0c00-0x0fff Voice 3
817 // and decoded data is 16 bit for one sample
819 // even if voices 1/3 are off or no cd audio is playing, the internal
820 // play positions will move on and wrap after 0x400 bytes.
821 // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
822 // increase this pointer on each sample by 2 bytes. If this pointer
823 // (or 0x400 offsets of this pointer) hits the spuirq address, we generate
824 // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here
825 // in some of Peops timer modes. So: we ignore this option here (for now).
829 for(ns=0;ns<NSSIZE;ns++)
831 if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000)
835 if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2)
839 pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC;
846 // wanna have around 1/60 sec (16.666 ms) updates
847 if (iCycle++ > 16/FRAG_MSECS)
849 SoundFeedStreamData((unsigned char *)pSpuBuffer,
850 ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer));
851 pS = (short *)pSpuBuffer;
859 // SPU ASYNC... even newer epsxe func
860 // 1 time every 'cycle' cycles... harhar
862 // rearmed: called every 2ms now
864 void CALLBACK SPUasync(unsigned long cycle)
866 if(!bSpuInit) return; // -> no init, no call
871 if(iSpuAsyncWait<=16/FRAG_MSECS) return;
878 // SPU UPDATE... new epsxe func
879 // 1 time every 32 hsync lines
880 // (312/32)x50 in pal
881 // (262/32)x60 in ntsc
883 // since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will
884 // leave that func in the linux port, until epsxe linux is using
885 // the async function as well
887 void CALLBACK SPUupdate(void)
894 void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap)
897 if(!xap->freq) return; // no xa freq ? bye
899 FeedXA(xap); // call main XA feeder
903 int CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
906 if (nbytes<=0) return -1;
908 return FeedCDDA((unsigned char *)pcm, nbytes);
911 // to be called after state load
912 void ClearWorkingState(void)
914 memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers
915 memset(iFMod,0,sizeof(iFMod));
916 pS=(short *)pSpuBuffer; // setup soundbuffer pointer
919 // SETUPSTREAMS: init most of the spu buffers
920 void SetupStreams(void)
924 pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer
926 if(iUseReverb==1) i=88200*2;
929 sRVBStart = (int *)malloc(i*4); // alloc reverb buffer
930 memset(sRVBStart,0,i*4);
931 sRVBEnd = sRVBStart + i;
932 sRVBPlay = sRVBStart;
934 XAStart = // alloc xa buffer
935 (uint32_t *)malloc(44100 * sizeof(uint32_t));
936 XAEnd = XAStart + 44100;
940 CDDAStart = // alloc cdda buffer
941 (uint32_t *)malloc(CDDA_BUFFER_SIZE);
942 CDDAEnd = CDDAStart + 16384;
943 CDDAPlay = CDDAStart;
944 CDDAFeed = CDDAStart;
946 for(i=0;i<MAXCHAN;i++) // loop sound channels
948 // we don't use mutex sync... not needed, would only
950 // s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL);
951 s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain
952 s_chan[i].pLoop=spuMemC;
953 s_chan[i].pCurr=spuMemC;
956 pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address
960 bSpuInit=1; // flag: we are inited
963 // REMOVESTREAMS: free most buffer
964 void RemoveStreams(void)
966 free(pSpuBuffer); // free mixing buffer
968 free(sRVBStart); // free reverb buffer
970 free(XAStart); // free XA buffer
972 free(CDDAStart); // free CDDA buffer
978 // SPUINIT: this func will be called first by the main emu
979 long CALLBACK SPUinit(void)
981 spuMemC = (unsigned char *)spuMem; // just small setup
982 memset((void *)&rvb, 0, sizeof(REVERBInfo));
986 spuAddr = 0xffffffff;
987 spuMemC = (unsigned char *)spuMem;
989 memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN));
994 SetupStreams(); // prepare streaming
999 // SPUOPEN: called by main emu after init
1000 long CALLBACK SPUopen(void)
1002 if (bSPUIsOpen) return 0; // security for some stupid main emus
1004 SetupSound(); // setup sound (before init!)
1008 return PSE_SPU_ERR_SUCCESS;
1011 // SPUCLOSE: called before shutdown
1012 long CALLBACK SPUclose(void)
1014 if (!bSPUIsOpen) return 0; // some security
1016 bSPUIsOpen = 0; // no more open
1018 RemoveSound(); // no more sound handling
1023 // SPUSHUTDOWN: called by main emu on final exit
1024 long CALLBACK SPUshutdown(void)
1027 RemoveStreams(); // no more streaming
1033 // SPUTEST: we don't test, we are always fine ;)
1034 long CALLBACK SPUtest(void)
1039 // SPUCONFIGURE: call config dialog
1040 long CALLBACK SPUconfigure(void)
1045 // StartCfgTool("CFG");
1050 // SPUABOUT: show about window
1051 void CALLBACK SPUabout(void)
1056 // StartCfgTool("ABOUT");
1061 // this functions will be called once,
1062 // passes a callback that should be called on SPU-IRQ/cdda volume change
1063 void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void))
1065 irqCallback = callback;
1068 void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short))
1070 cddavCallback = CDDAVcallback;
1073 // COMMON PLUGIN INFO FUNCS
1075 char * CALLBACK PSEgetLibName(void)
1077 return _(libraryName);
1080 unsigned long CALLBACK PSEgetLibType(void)
1085 unsigned long CALLBACK PSEgetLibVersion(void)
1087 return (1 << 16) | (6 << 8);
1090 char * SPUgetLibInfos(void)
1092 return _(libraryInfo);
1097 void spu_get_debug_info(int *chans_out, int *run_chans, int *fmod_chans_out, int *noise_chans_out)
1099 int ch = 0, fmod_chans = 0, noise_chans = 0, irq_chans = 0;
1101 for(;ch<MAXCHAN;ch++)
1103 if (!(dwChannelOn & (1<<ch)))
1105 if (s_chan[ch].bFMod == 2)
1106 fmod_chans |= 1 << ch;
1107 if (s_chan[ch].bNoise)
1108 noise_chans |= 1 << ch;
1109 if((spuCtrl&CTRL_IRQ) && s_chan[ch].pCurr <= pSpuIrq && s_chan[ch].pLoop <= pSpuIrq)
1110 irq_chans |= 1 << ch;
1113 *chans_out = dwChannelOn;
1114 *run_chans = ~dwChannelOn & ~dwChannelDead & irq_chans;
1115 *fmod_chans_out = fmod_chans;
1116 *noise_chans_out = noise_chans;
1119 // vim:shiftwidth=1:expandtab