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, 2010-2012,2014
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 ***************************************************************************/
22 #include <sys/time.h> // gettimeofday in xa.c
28 #include "externals.h"
29 #include "registers.h"
31 #include "arm_features.h"
32 #include "spu_config.h"
34 #ifdef __ARM_ARCH_7A__
35 #define ssat32_to_16(v) \
36 asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
38 #define ssat32_to_16(v) do { \
39 if (v < -32768) v = -32768; \
40 else if (v > 32767) v = 32767; \
44 #define PSXCLK 33868800 /* 33.8688 MHz */
46 // intended to be ~1 frame
47 #define IRQ_NEAR_BLOCKS 32
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");
72 // MAIN infos struct for each channel
74 SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling)
77 // certain globals (were local before, but with the new timeproc I need em global)
79 static const int f[8][2] = { { 0, 0 },
88 #define CDDA_BUFFER_SIZE (16384 * sizeof(uint32_t)) // must be power of 2
90 ////////////////////////////////////////////////////////////////////////
92 ////////////////////////////////////////////////////////////////////////
94 // dirty inline func includes
99 ////////////////////////////////////////////////////////////////////////
100 // helpers for simple interpolation
103 // easy interpolation on upsampling, no special filter, just "Pete's common sense" tm
105 // instead of having n equal sample values in a row like:
109 // we compare the current delta change with the next delta change.
111 // if curr_delta is positive,
113 // - and next delta is smaller (or changing direction):
117 // - and next delta significant (at least twice) bigger:
121 // - and next delta is nearly same:
126 // if curr_delta is negative,
128 // - and next delta is smaller (or changing direction):
132 // - and next delta significant (at least twice) bigger:
136 // - and next delta is nearly same:
142 INLINE void InterpolateUp(int ch)
144 if(s_chan[ch].SB[32]==1) // flag == 1? calc step and set flag... and don't change the value in this pass
146 const int id1=s_chan[ch].SB[30]-s_chan[ch].SB[29]; // curr delta to next val
147 const int id2=s_chan[ch].SB[31]-s_chan[ch].SB[30]; // and next delta to next-next val :)
151 if(id1>0) // curr delta positive
154 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
157 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
159 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
161 else // curr delta negative
164 {s_chan[ch].SB[28]=id1;s_chan[ch].SB[32]=2;}
167 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x10000L;
169 s_chan[ch].SB[28]=(id1*s_chan[ch].sinc)/0x20000L;
173 if(s_chan[ch].SB[32]==2) // flag 1: calc step and set flag... and don't change the value in this pass
177 s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L;
178 //if(s_chan[ch].sinc<=0x8000)
179 // s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1));
181 s_chan[ch].SB[29]+=s_chan[ch].SB[28];
183 else // no flags? add bigger val (if possible), calc smaller step, set flag1
184 s_chan[ch].SB[29]+=s_chan[ch].SB[28];
188 // even easier interpolation on downsampling, also no special filter, again just "Pete's common sense" tm
191 INLINE void InterpolateDown(int ch)
193 if(s_chan[ch].sinc>=0x20000L) // we would skip at least one val?
195 s_chan[ch].SB[29]+=(s_chan[ch].SB[30]-s_chan[ch].SB[29])/2; // add easy weight
196 if(s_chan[ch].sinc>=0x30000L) // we would skip even more vals?
197 s_chan[ch].SB[29]+=(s_chan[ch].SB[31]-s_chan[ch].SB[30])/2;// add additional next weight
201 ////////////////////////////////////////////////////////////////////////
202 // helpers for gauss interpolation
204 #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos&3])
205 #define gval(x) ((int)((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
209 ////////////////////////////////////////////////////////////////////////
213 static void do_irq(void)
215 //if(!(spu.spuStat & STAT_IRQ))
217 spu.spuStat |= STAT_IRQ; // asserted status?
218 if(spu.irqCallback) spu.irqCallback();
222 static int check_irq(int ch, unsigned char *pos)
224 if((spu.spuCtrl & CTRL_IRQ) && pos == spu.pSpuIrq)
226 //printf("ch%d irq %04x\n", ch, pos - spu.spuMemC);
233 ////////////////////////////////////////////////////////////////////////
234 // START SOUND... called by main thread to setup a new sound on a channel
235 ////////////////////////////////////////////////////////////////////////
237 INLINE void StartSound(int ch)
242 // fussy timing issues - do in VoiceOn
243 //s_chan[ch].pCurr=s_chan[ch].pStart; // set sample start
244 //s_chan[ch].bStop=0;
247 s_chan[ch].SB[26]=0; // init mixing vars
249 s_chan[ch].iSBPos=27;
252 s_chan[ch].SB[29]=0; // init our interpolation helpers
257 spu.dwNewChannel&=~(1<<ch); // clear new channel bit
260 ////////////////////////////////////////////////////////////////////////
261 // ALL KIND OF HELPERS
262 ////////////////////////////////////////////////////////////////////////
264 INLINE int FModChangeFrequency(int ch,int ns)
266 unsigned int NP=s_chan[ch].iRawPitch;
269 NP=((32768L+iFMod[ns])*NP)/32768L;
271 if(NP>0x3fff) NP=0x3fff;
274 sinc=NP<<4; // calc frequency
275 if(spu_config.iUseInterpolation==1) // freq change in simple interpolation mode
282 ////////////////////////////////////////////////////////////////////////
284 INLINE void StoreInterpolationVal(int ch,int fa)
286 if(s_chan[ch].bFMod==2) // fmod freq channel
287 s_chan[ch].SB[29]=fa;
292 if(spu_config.iUseInterpolation>=2) // gauss/cubic interpolation
294 int gpos = s_chan[ch].SB[28];
297 s_chan[ch].SB[28] = gpos;
300 if(spu_config.iUseInterpolation==1) // simple interpolation
302 s_chan[ch].SB[28] = 0;
303 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'
304 s_chan[ch].SB[30] = s_chan[ch].SB[31];
305 s_chan[ch].SB[31] = fa;
306 s_chan[ch].SB[32] = 1; // -> flag: calc new interolation
308 else s_chan[ch].SB[29]=fa; // no interpolation
312 ////////////////////////////////////////////////////////////////////////
314 INLINE int iGetInterpolationVal(int ch, int spos)
318 if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29];
320 switch(spu_config.iUseInterpolation)
322 //--------------------------------------------------//
323 case 3: // cubic interpolation
327 gpos = s_chan[ch].SB[28];
329 fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0;
330 fa *= (xd - (2<<15)) / 6;
332 fa += gval(2) - gval(1) - gval(1) + gval0;
333 fa *= (xd - (1<<15)) >> 1;
335 fa += gval(1) - gval0;
341 //--------------------------------------------------//
342 case 2: // gauss interpolation
345 vl = (spos >> 6) & ~3;
346 gpos = s_chan[ch].SB[28];
347 vr=(gauss[vl]*(int)gval0)&~2047;
348 vr+=(gauss[vl+1]*gval(1))&~2047;
349 vr+=(gauss[vl+2]*gval(2))&~2047;
350 vr+=(gauss[vl+3]*gval(3))&~2047;
353 //--------------------------------------------------//
354 case 1: // simple interpolation
356 if(s_chan[ch].sinc<0x10000L) // -> upsampling?
357 InterpolateUp(ch); // --> interpolate up
358 else InterpolateDown(ch); // --> else down
359 fa=s_chan[ch].SB[29];
361 //--------------------------------------------------//
362 default: // no interpolation
364 fa=s_chan[ch].SB[29];
366 //--------------------------------------------------//
372 static void decode_block_data(int *dest, const unsigned char *src, int predict_nr, int shift_factor)
375 int fa, s_1, s_2, d, s;
380 for (nSample = 0; nSample < 28; src++)
383 s = (int)(signed short)((d & 0x0f) << 12);
385 fa = s >> shift_factor;
386 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
389 dest[nSample++] = fa;
391 s = (int)(signed short)((d & 0xf0) << 8);
392 fa = s >> shift_factor;
393 fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
396 dest[nSample++] = fa;
400 static int decode_block(int ch)
402 unsigned char *start;
403 int predict_nr,shift_factor,flags;
407 start = s_chan[ch].pCurr; // set up the current pos
408 if(start == spu.spuMemC) // ?
411 if(s_chan[ch].prevflags&1) // 1: stop/loop
413 if(!(s_chan[ch].prevflags&2))
416 start = s_chan[ch].pLoop;
419 ret = check_irq(ch, start); // hack, see check_irq below..
423 spu.dwChannelOn &= ~(1<<ch); // -> turn everything off
424 s_chan[ch].bStop = 1;
425 s_chan[ch].ADSRX.EnvelopeVol = 0;
428 predict_nr=(int)start[0];
429 shift_factor=predict_nr&0xf;
432 decode_block_data(s_chan[ch].SB, start + 2, predict_nr, shift_factor);
436 s_chan[ch].pLoop=start; // loop adress
440 if(flags&1) { // 1: stop/loop
441 start = s_chan[ch].pLoop;
442 ret |= check_irq(ch, start); // hack.. :(
445 if (start - spu.spuMemC >= 0x80000)
448 s_chan[ch].pCurr = start; // store values for next cycle
449 s_chan[ch].prevflags = flags;
454 // do block, but ignore sample data
455 static int skip_block(int ch)
457 unsigned char *start = s_chan[ch].pCurr;
458 int flags = start[1];
459 int ret = check_irq(ch, start);
461 if(s_chan[ch].prevflags & 1)
462 start = s_chan[ch].pLoop;
465 s_chan[ch].pLoop = start;
470 start = s_chan[ch].pLoop;
472 s_chan[ch].pCurr = start;
473 s_chan[ch].prevflags = flags;
478 // if irq is going to trigger sooner than in upd_samples, set upd_samples
479 static void scan_for_irq(int ch, unsigned int *upd_samples)
481 int pos, sinc, sinc_inv, end;
482 unsigned char *block;
485 block = s_chan[ch].pCurr;
486 pos = s_chan[ch].spos;
487 sinc = s_chan[ch].sinc;
488 end = pos + *upd_samples * sinc;
490 pos += (28 - s_chan[ch].iSBPos) << 16;
493 if (block == spu.pSpuIrq)
497 if (flags & 1) { // 1: stop/loop
498 block = s_chan[ch].pLoop;
499 if (block == spu.pSpuIrq) // hack.. (see decode_block)
507 sinc_inv = s_chan[ch].sinc_inv;
509 sinc_inv = s_chan[ch].sinc_inv = (0x80000000u / (uint32_t)sinc) << 1;
511 pos -= s_chan[ch].spos;
512 *upd_samples = (((uint64_t)pos * sinc_inv) >> 32) + 1;
513 //xprintf("ch%02d: irq sched: %3d %03d\n",
514 // ch, *upd_samples, *upd_samples * 60 * 263 / 44100);
518 #define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
519 static noinline int do_samples_##name(int ch, int ns, int ns_to) \
521 int sinc = s_chan[ch].sinc; \
522 int spos = s_chan[ch].spos; \
523 int sbpos = s_chan[ch].iSBPos; \
524 int *SB = s_chan[ch].SB; \
529 for (; ns < ns_to; ns++) \
534 while (spos >= 0x10000) \
540 d = decode_block(ch); \
542 ret = /*ns_to =*/ ns + 1; \
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 noinline int do_samples_noise(int ch, int ns, int ns_to)
587 int level, shift, bit;
590 s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns);
591 while (s_chan[ch].spos >= 28*0x10000)
596 s_chan[ch].spos -= 28*0x10000;
599 // modified from DrHell/shalma, no fraction
600 level = (spu.spuCtrl >> 10) & 0x0f;
601 level = 0x8000 >> level;
603 for (; ns < ns_to; ns++)
605 spu.dwNoiseCount += 2;
606 if (spu.dwNoiseCount >= level)
608 spu.dwNoiseCount -= level;
609 shift = (spu.dwNoiseVal >> 10) & 0x1f;
610 bit = (0x69696969 >> shift) & 1;
611 if (spu.dwNoiseVal & 0x8000)
613 spu.dwNoiseVal = (spu.dwNoiseVal << 1) | bit;
616 ChanBuf[ns] = (signed short)spu.dwNoiseVal;
623 // asm code; lv and rv must be 0-3fff
624 extern void mix_chan(int start, int count, int lv, int rv);
625 extern void mix_chan_rvb(int start, int count, int lv, int rv, int *rvb);
627 static void mix_chan(int start, int count, int lv, int rv)
629 int *dst = SSumLR + start * 2;
630 const int *src = ChanBuf + start;
637 l = (sval * lv) >> 14;
638 r = (sval * rv) >> 14;
644 static void mix_chan_rvb(int start, int count, int lv, int rv, int *rvb)
646 int *dst = SSumLR + start * 2;
647 int *drvb = rvb + start * 2;
648 const int *src = ChanBuf + start;
655 l = (sval * lv) >> 14;
656 r = (sval * rv) >> 14;
665 // 0x0800-0x0bff Voice 1
666 // 0x0c00-0x0fff Voice 3
667 static noinline void do_decode_bufs(int which, int start, int count)
669 const int *src = ChanBuf + start;
670 unsigned short *dst = &spu.spuMem[0x800/2 + which*0x400/2];
671 int cursor = spu.decode_pos + start;
676 dst[cursor] = *src++;
680 // decode_pos is updated and irqs are checked later, after voice loop
683 ////////////////////////////////////////////////////////////////////////
685 // here is the main job handler...
686 // basically the whole sound processing is done in this fat func!
687 ////////////////////////////////////////////////////////////////////////
689 void do_samples(unsigned int cycles_to)
691 const int ns_from = 0;
693 int volmult = spu_config.iVolume;
697 cycle_diff = cycles_to - spu.cycles_played;
698 if (cycle_diff < -2*1048576 || cycle_diff > 2*1048576)
700 //xprintf("desync %u %d\n", cycles_to, cycle_diff);
701 spu.cycles_played = cycles_to;
705 if (cycle_diff < 2 * 768)
708 ns_to = (cycle_diff / 768 + 1) & ~1;
709 if (ns_to > NSSIZE) {
710 // should never happen
711 //xprintf("ns_to oflow %d %d\n", ns_to, NSSIZE);
715 //////////////////////////////////////////////////////
716 // special irq handling in the decode buffers (0x0000-0x1000)
718 // the decode buffers are located in spu memory in the following way:
719 // 0x0000-0x03ff CD audio left
720 // 0x0400-0x07ff CD audio right
721 // 0x0800-0x0bff Voice 1
722 // 0x0c00-0x0fff Voice 3
723 // and decoded data is 16 bit for one sample
725 // even if voices 1/3 are off or no cd audio is playing, the internal
726 // play positions will move on and wrap after 0x400 bytes.
727 // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
728 // increase this pointer on each sample by 2 bytes. If this pointer
729 // (or 0x400 offsets of this pointer) hits the spuirq address, we generate
732 if (unlikely((spu.spuCtrl & CTRL_IRQ)
733 && spu.pSpuIrq < spu.spuMemC+0x1000))
735 int irq_pos = (spu.pSpuIrq - spu.spuMemC) / 2 & 0x1ff;
736 int left = (irq_pos - spu.decode_pos) & 0x1ff;
737 if (0 < left && left <= ns_to)
739 //xprintf("decoder irq %x\n", spu.decode_pos);
747 silentch=~(spu.dwChannelOn|spu.dwNewChannel);
749 //--------------------------------------------------//
750 //- main channel loop -//
751 //--------------------------------------------------//
753 for(ch=0;ch<MAXCHAN;ch++) // loop em all...
755 if(spu.dwNewChannel&(1<<ch)) StartSound(ch); // start new sound
756 if(!(spu.dwChannelOn&(1<<ch))) continue; // channel not playing? next
758 if(s_chan[ch].bNoise)
759 do_samples_noise(ch, ns_from, ns_to);
760 else if(s_chan[ch].bFMod==2 || (s_chan[ch].bFMod==0 && spu_config.iUseInterpolation==0))
761 do_samples_noint(ch, ns_from, ns_to);
762 else if(s_chan[ch].bFMod==0 && spu_config.iUseInterpolation==1)
763 do_samples_simple(ch, ns_from, ns_to);
765 do_samples_default(ch, ns_from, ns_to);
767 ns_len = ns_to - ns_from;
769 MixADSR(ch, ns_from, ns_to);
773 do_decode_bufs(ch/2, ns_from, ns_len);
774 spu.decode_dirty_ch |= 1<<ch;
777 if(s_chan[ch].bFMod==2) // fmod freq channel
778 memcpy(&iFMod[ns_from], &ChanBuf[ns_from], ns_len * sizeof(iFMod[0]));
779 if(s_chan[ch].bRVBActive)
780 mix_chan_rvb(ns_from, ns_len, s_chan[ch].iLeftVolume, s_chan[ch].iRightVolume, spu.sRVBStart);
782 mix_chan(ns_from, ns_len, s_chan[ch].iLeftVolume, s_chan[ch].iRightVolume);
786 // advance "stopped" channels that can cause irqs
787 // (all chans are always playing on the real thing..)
788 if(spu.spuCtrl&CTRL_IRQ)
789 for(ch=0;ch<MAXCHAN;ch++)
791 if(!(silentch&(1<<ch))) continue; // already handled
792 if(spu.dwChannelDead&(1<<ch)) continue;
793 if(s_chan[ch].pCurr > spu.pSpuIrq && s_chan[ch].pLoop > spu.pSpuIrq)
796 s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns_from);
797 while(s_chan[ch].spos >= 28 * 0x10000)
799 unsigned char *start = s_chan[ch].pCurr;
802 if(start == s_chan[ch].pCurr || start - spu.spuMemC < 0x1000)
804 // looping on self or stopped(?)
805 spu.dwChannelDead |= 1<<ch;
810 s_chan[ch].spos -= 28 * 0x10000;
814 if(unlikely(silentch & spu.decode_dirty_ch & (1<<1))) // must clear silent channel decode buffers
816 memset(&spu.spuMem[0x800/2], 0, 0x400);
817 spu.decode_dirty_ch &= ~(1<<1);
819 if(unlikely(silentch & spu.decode_dirty_ch & (1<<3)))
821 memset(&spu.spuMem[0xc00/2], 0, 0x400);
822 spu.decode_dirty_ch &= ~(1<<3);
825 //---------------------------------------------------//
826 // mix XA infos (if any)
830 ///////////////////////////////////////////////////////
831 // mix all channels (including reverb) into one buffer
833 if(spu_config.iUseReverb)
836 if((spu.spuCtrl&0x4000)==0) // muted? (rare, don't optimize for this)
838 memset(spu.pS, 0, ns_to * 2 * sizeof(spu.pS[0]));
842 for (ns = 0; ns < ns_to * 2; )
844 d = SSumLR[ns]; SSumLR[ns] = 0;
845 d = d * volmult >> 10;
850 d = SSumLR[ns]; SSumLR[ns] = 0;
851 d = d * volmult >> 10;
857 spu.cycles_played += ns_to * 768;
859 spu.decode_pos = (spu.decode_pos + ns_to) & 0x1ff;
863 void schedule_next_irq(void)
865 unsigned int upd_samples;
868 if (spu.scheduleCallback == NULL)
871 upd_samples = 44100 / 50;
873 for (ch = 0; ch < MAXCHAN; ch++)
875 if (spu.dwChannelDead & (1 << ch))
877 if ((unsigned long)(spu.pSpuIrq - s_chan[ch].pCurr) > IRQ_NEAR_BLOCKS * 16
878 && (unsigned long)(spu.pSpuIrq - s_chan[ch].pLoop) > IRQ_NEAR_BLOCKS * 16)
881 scan_for_irq(ch, &upd_samples);
884 if (unlikely(spu.pSpuIrq < spu.spuMemC + 0x1000))
886 int irq_pos = (spu.pSpuIrq - spu.spuMemC) / 2 & 0x1ff;
887 int left = (irq_pos - spu.decode_pos) & 0x1ff;
888 if (0 < left && left < upd_samples) {
889 //xprintf("decode: %3d (%3d/%3d)\n", left, spu.decode_pos, irq_pos);
894 if (upd_samples < 44100 / 50)
895 spu.scheduleCallback(upd_samples * 768);
898 // SPU ASYNC... even newer epsxe func
899 // 1 time every 'cycle' cycles... harhar
901 // rearmed: called dynamically now
903 void CALLBACK SPUasync(unsigned int cycle, unsigned int flags)
907 if (spu.spuCtrl & CTRL_IRQ)
911 out_current->feed(spu.pSpuBuffer, (unsigned char *)spu.pS - spu.pSpuBuffer);
912 spu.pS = (short *)spu.pSpuBuffer;
914 if (spu_config.iTempo) {
915 if (!out_current->busy())
916 // cause more samples to be generated
917 // (and break some games because of bad sync)
918 spu.cycles_played -= 44100 / 60 / 2 * 768;
923 // SPU UPDATE... new epsxe func
924 // 1 time every 32 hsync lines
925 // (312/32)x50 in pal
926 // (262/32)x60 in ntsc
928 // since epsxe 1.5.2 (linux) uses SPUupdate, not SPUasync, I will
929 // leave that func in the linux port, until epsxe linux is using
930 // the async function as well
932 void CALLBACK SPUupdate(void)
938 void CALLBACK SPUplayADPCMchannel(xa_decode_t *xap)
941 if(!xap->freq) return; // no xa freq ? bye
943 FeedXA(xap); // call main XA feeder
947 int CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
950 if (nbytes<=0) return -1;
952 return FeedCDDA((unsigned char *)pcm, nbytes);
955 // to be called after state load
956 void ClearWorkingState(void)
958 memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers
959 memset(iFMod,0,sizeof(iFMod));
960 spu.pS=(short *)spu.pSpuBuffer; // setup soundbuffer pointer
963 // SETUPSTREAMS: init most of the spu buffers
964 void SetupStreams(void)
968 spu.pSpuBuffer = (unsigned char *)malloc(32768); // alloc mixing buffer
969 spu.sRVBStart = (int *)malloc(NSSIZE*2*4); // alloc reverb buffer
970 memset(spu.sRVBStart,0,NSSIZE*2*4);
972 spu.XAStart = // alloc xa buffer
973 (uint32_t *)malloc(44100 * sizeof(uint32_t));
974 spu.XAEnd = spu.XAStart + 44100;
975 spu.XAPlay = spu.XAStart;
976 spu.XAFeed = spu.XAStart;
978 spu.CDDAStart = // alloc cdda buffer
979 (uint32_t *)malloc(CDDA_BUFFER_SIZE);
980 spu.CDDAEnd = spu.CDDAStart + 16384;
981 spu.CDDAPlay = spu.CDDAStart;
982 spu.CDDAFeed = spu.CDDAStart;
984 for(i=0;i<MAXCHAN;i++) // loop sound channels
986 s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain
987 s_chan[i].ADSRX.SustainIncrease = 1;
988 s_chan[i].pLoop=spu.spuMemC;
989 s_chan[i].pCurr=spu.spuMemC;
994 spu.bSpuInit=1; // flag: we are inited
997 // REMOVESTREAMS: free most buffer
998 void RemoveStreams(void)
1000 free(spu.pSpuBuffer); // free mixing buffer
1001 spu.pSpuBuffer = NULL;
1002 free(spu.sRVBStart); // free reverb buffer
1003 spu.sRVBStart = NULL;
1004 free(spu.XAStart); // free XA buffer
1006 free(spu.CDDAStart); // free CDDA buffer
1007 spu.CDDAStart = NULL;
1012 // SPUINIT: this func will be called first by the main emu
1013 long CALLBACK SPUinit(void)
1015 spu.spuMemC = (unsigned char *)spu.spuMem; // just small setup
1016 memset((void *)&rvb, 0, sizeof(REVERBInfo));
1019 spu.spuAddr = 0xffffffff;
1021 memset((void *)s_chan, 0, sizeof(s_chan));
1022 spu.pSpuIrq = spu.spuMemC;
1024 SetupStreams(); // prepare streaming
1026 if (spu_config.iVolume == 0)
1027 spu_config.iVolume = 768; // 1024 is 1.0
1032 // SPUOPEN: called by main emu after init
1033 long CALLBACK SPUopen(void)
1035 if (spu.bSPUIsOpen) return 0; // security for some stupid main emus
1037 SetupSound(); // setup sound (before init!)
1041 return PSE_SPU_ERR_SUCCESS;
1044 // SPUCLOSE: called before shutdown
1045 long CALLBACK SPUclose(void)
1047 if (!spu.bSPUIsOpen) return 0; // some security
1049 spu.bSPUIsOpen = 0; // no more open
1051 out_current->finish(); // no more sound handling
1056 // SPUSHUTDOWN: called by main emu on final exit
1057 long CALLBACK SPUshutdown(void)
1060 RemoveStreams(); // no more streaming
1066 // SPUTEST: we don't test, we are always fine ;)
1067 long CALLBACK SPUtest(void)
1072 // SPUCONFIGURE: call config dialog
1073 long CALLBACK SPUconfigure(void)
1078 // StartCfgTool("CFG");
1083 // SPUABOUT: show about window
1084 void CALLBACK SPUabout(void)
1089 // StartCfgTool("ABOUT");
1094 // this functions will be called once,
1095 // passes a callback that should be called on SPU-IRQ/cdda volume change
1096 void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void))
1098 spu.irqCallback = callback;
1101 void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short))
1103 spu.cddavCallback = CDDAVcallback;
1106 void CALLBACK SPUregisterScheduleCb(void (CALLBACK *callback)(unsigned int))
1108 spu.scheduleCallback = callback;
1111 // COMMON PLUGIN INFO FUNCS
1113 char * CALLBACK PSEgetLibName(void)
1115 return _(libraryName);
1118 unsigned long CALLBACK PSEgetLibType(void)
1123 unsigned long CALLBACK PSEgetLibVersion(void)
1125 return (1 << 16) | (6 << 8);
1128 char * SPUgetLibInfos(void)
1130 return _(libraryInfo);
1135 void spu_get_debug_info(int *chans_out, int *run_chans, int *fmod_chans_out, int *noise_chans_out)
1137 int ch = 0, fmod_chans = 0, noise_chans = 0, irq_chans = 0;
1139 for(;ch<MAXCHAN;ch++)
1141 if (!(spu.dwChannelOn & (1<<ch)))
1143 if (s_chan[ch].bFMod == 2)
1144 fmod_chans |= 1 << ch;
1145 if (s_chan[ch].bNoise)
1146 noise_chans |= 1 << ch;
1147 if((spu.spuCtrl&CTRL_IRQ) && s_chan[ch].pCurr <= spu.pSpuIrq && s_chan[ch].pLoop <= spu.pSpuIrq)
1148 irq_chans |= 1 << ch;
1151 *chans_out = spu.dwChannelOn;
1152 *run_chans = ~spu.dwChannelOn & ~spu.dwChannelDead & irq_chans;
1153 *fmod_chans_out = fmod_chans;
1154 *noise_chans_out = noise_chans;
1157 // vim:shiftwidth=1:expandtab