begin : Wed May 15 2002
copyright : (C) 2002 by Pete Bernert
email : BlackDove@addcom.de
+
+ Portions (C) GraÅžvydas "notaz" Ignotas, 2010-2012
+
***************************************************************************/
/***************************************************************************
* *
#define _IN_SPU
#include "externals.h"
-#include "cfg.h"
-#include "dsoundoss.h"
-#include "regs.h"
+#include "registers.h"
+#include "out.h"
+#include "arm_features.h"
+#include "spu_config.h"
#ifdef ENABLE_NLS
#include <libintl.h>
#define N_(x) (x)
#endif
+#ifdef __ARM_ARCH_7A__
+ #define ssat32_to_16(v) \
+ asm("ssat %0,#16,%1" : "=r" (v) : "r" (v))
+#else
+ #define ssat32_to_16(v) do { \
+ if (v < -32768) v = -32768; \
+ else if (v > 32767) v = 32767; \
+ } while (0)
+#endif
+
+#define PSXCLK 33868800 /* 33.8688 MHz */
+
+// intended to be ~1 frame
+#define IRQ_NEAR_BLOCKS 32
+
/*
#if defined (USEMACOSX)
static char * libraryName = N_("Mac OS X Sound");
// globals
-// psx buffer / addresses
-
-unsigned short regArea[10000];
-unsigned short spuMem[256*1024];
-unsigned char * spuMemC;
-unsigned char * pSpuIrq=0;
-unsigned char * pSpuBuffer;
-unsigned char * pMixIrq=0;
-
-// user settings
-
-int iVolume=3;
-int iXAPitch=1;
-int iUseTimer=2;
-int iSPUIRQWait=1;
-int iDebugMode=0;
-int iRecordMode=0;
-int iUseReverb=2;
-int iUseInterpolation=2;
+SPUInfo spu;
+SPUConfig spu_config;
// MAIN infos struct for each channel
SPUCHAN s_chan[MAXCHAN+1]; // channel + 1 infos (1 is security for fmod handling)
REVERBInfo rvb;
-unsigned long dwNoiseVal=1; // global noise generator
-int iSpuAsyncWait=0;
-
-unsigned short spuCtrl=0; // some vars to store psx reg infos
-unsigned short spuStat=0;
-unsigned short spuIrq=0;
-unsigned long spuAddr=0xffffffff; // address into spu mem
-int bEndThread=0; // thread handlers
-int bThreadEnded=0;
-int bSpuInit=0;
-int bSPUIsOpen=0;
-
-static pthread_t thread = (pthread_t)-1; // thread id (linux)
-
-unsigned long dwNewChannel=0; // flags for faster testing, if new channel starts
-unsigned long dwChannelOn=0;
-
-void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq
-void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0;
-
// certain globals (were local before, but with the new timeproc I need em global)
static const int f[8][2] = { { 0, 0 },
{ 115, -52 },
{ 98, -55 },
{ 122, -60 } };
+int ChanBuf[NSSIZE];
int SSumLR[NSSIZE*2];
int iFMod[NSSIZE];
-int iCycle = 0;
-short * pS;
-int lastch=-1; // last channel processed on spu irq in timer mode
-static int lastns=0; // last ns pos
-static int iSecureStart=0; // secure start counter
+#define CDDA_BUFFER_SIZE (16384 * sizeof(uint32_t)) // must be power of 2
////////////////////////////////////////////////////////////////////////
// CODE AREA
s_chan[ch].SB[32]=0;
s_chan[ch].SB[28]=(s_chan[ch].SB[28]*s_chan[ch].sinc)/0x20000L;
- if(s_chan[ch].sinc<=0x8000)
- s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1));
- else s_chan[ch].SB[29]+=s_chan[ch].SB[28];
+ //if(s_chan[ch].sinc<=0x8000)
+ // s_chan[ch].SB[29]=s_chan[ch].SB[30]-(s_chan[ch].SB[28]*((0x10000/s_chan[ch].sinc)-1));
+ //else
+ s_chan[ch].SB[29]+=s_chan[ch].SB[28];
}
else // no flags? add bigger val (if possible), calc smaller step, set flag1
s_chan[ch].SB[29]+=s_chan[ch].SB[28];
////////////////////////////////////////////////////////////////////////
// helpers for gauss interpolation
-#define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos])
-#define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
+#define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos&3])
+#define gval(x) ((int)((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
#include "gauss_i.h"
#include "xa.c"
+static void do_irq(void)
+{
+ //if(!(spu.spuStat & STAT_IRQ))
+ {
+ spu.spuStat |= STAT_IRQ; // asserted status?
+ if(spu.irqCallback) spu.irqCallback();
+ }
+}
+
+static int check_irq(int ch, unsigned char *pos)
+{
+ if((spu.spuCtrl & CTRL_IRQ) && pos == spu.pSpuIrq)
+ {
+ //printf("ch%d irq %04x\n", ch, pos - spu.spuMemC);
+ do_irq();
+ return 1;
+ }
+ return 0;
+}
+
////////////////////////////////////////////////////////////////////////
// START SOUND... called by main thread to setup a new sound on a channel
////////////////////////////////////////////////////////////////////////
//s_chan[ch].bStop=0;
//s_chan[ch].bOn=1;
- s_chan[ch].s_1=0; // init mixing vars
- s_chan[ch].s_2=0;
+ s_chan[ch].SB[26]=0; // init mixing vars
+ s_chan[ch].SB[27]=0;
s_chan[ch].iSBPos=28;
s_chan[ch].SB[29]=0; // init our interpolation helpers
s_chan[ch].SB[30]=0;
- if(iUseInterpolation>=2) // gauss interpolation?
+ if(spu_config.iUseInterpolation>=2) // gauss interpolation?
{s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;} // -> start with more decoding
else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;} // -> no/simple interpolation starts with one 44100 decoding
- dwNewChannel&=~(1<<ch); // clear new channel bit
+ spu.dwNewChannel&=~(1<<ch); // clear new channel bit
}
////////////////////////////////////////////////////////////////////////
// ALL KIND OF HELPERS
////////////////////////////////////////////////////////////////////////
-INLINE void VoiceChangeFrequency(int ch)
+INLINE int FModChangeFrequency(int ch,int ns)
{
- s_chan[ch].iUsedFreq=s_chan[ch].iActFreq; // -> take it and calc steps
- s_chan[ch].sinc=s_chan[ch].iRawPitch<<4;
- if(!s_chan[ch].sinc) s_chan[ch].sinc=1;
- if(iUseInterpolation==1) s_chan[ch].SB[32]=1; // -> freq change in simle imterpolation mode: set flag
-}
-
-////////////////////////////////////////////////////////////////////////
-
-INLINE void FModChangeFrequency(int ch,int ns)
-{
- int NP=s_chan[ch].iRawPitch;
+ unsigned int NP=s_chan[ch].iRawPitch;
+ int sinc;
NP=((32768L+iFMod[ns])*NP)/32768L;
if(NP>0x3fff) NP=0x3fff;
if(NP<0x1) NP=0x1;
- NP=(44100L*NP)/(4096L); // calc frequency
-
- s_chan[ch].iActFreq=NP;
- s_chan[ch].iUsedFreq=NP;
- s_chan[ch].sinc=(((NP/10)<<16)/4410);
- if(!s_chan[ch].sinc) s_chan[ch].sinc=1;
- if(iUseInterpolation==1) // freq change in simple interpolation mode
- s_chan[ch].SB[32]=1;
+ sinc=NP<<4; // calc frequency
+ if(spu_config.iUseInterpolation==1) // freq change in simple interpolation mode
+ s_chan[ch].SB[32]=1;
iFMod[ns]=0;
-}
-
-////////////////////////////////////////////////////////////////////////
-
-// noise handler... just produces some noise data
-// surely wrong... and no noise frequency (spuCtrl&0x3f00) will be used...
-// and sometimes the noise will be used as fmod modulation... pfff
-INLINE int iGetNoiseVal(int ch)
-{
- int fa;
-
- if((dwNoiseVal<<=1)&0x80000000L)
- {
- dwNoiseVal^=0x0040001L;
- fa=((dwNoiseVal>>2)&0x7fff);
- fa=-fa;
- }
- else fa=(dwNoiseVal>>2)&0x7fff;
-
- // mmm... depending on the noise freq we allow bigger/smaller changes to the previous val
- fa=s_chan[ch].iOldNoise+((fa-s_chan[ch].iOldNoise)/((0x001f-((spuCtrl&0x3f00)>>9))+1));
- if(fa>32767L) fa=32767L;
- if(fa<-32767L) fa=-32767L;
- s_chan[ch].iOldNoise=fa;
-
- if(iUseInterpolation<2) // no gauss/cubic interpolation?
- s_chan[ch].SB[29] = fa; // -> store noise val in "current sample" slot
- return fa;
-}
+ return sinc;
+}
////////////////////////////////////////////////////////////////////////
s_chan[ch].SB[29]=fa;
else
{
- if((spuCtrl&0x4000)==0) fa=0; // muted?
- else // else adjust
- {
- if(fa>32767L) fa=32767L;
- if(fa<-32767L) fa=-32767L;
- }
+ ssat32_to_16(fa);
- if(iUseInterpolation>=2) // gauss/cubic interpolation
+ if(spu_config.iUseInterpolation>=2) // gauss/cubic interpolation
{
int gpos = s_chan[ch].SB[28];
gval0 = fa;
s_chan[ch].SB[28] = gpos;
}
else
- if(iUseInterpolation==1) // simple interpolation
+ if(spu_config.iUseInterpolation==1) // simple interpolation
{
s_chan[ch].SB[28] = 0;
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'
////////////////////////////////////////////////////////////////////////
-INLINE int iGetInterpolationVal(int ch)
+INLINE int iGetInterpolationVal(int ch, int spos)
{
int fa;
if(s_chan[ch].bFMod==2) return s_chan[ch].SB[29];
- switch(iUseInterpolation)
+ switch(spu_config.iUseInterpolation)
{
//--------------------------------------------------//
case 3: // cubic interpolation
{
long xd;int gpos;
- xd = ((s_chan[ch].spos) >> 1)+1;
+ xd = (spos >> 1)+1;
gpos = s_chan[ch].SB[28];
fa = gval(3) - 3*gval(2) + 3*gval(1) - gval0;
case 2: // gauss interpolation
{
int vl, vr;int gpos;
- vl = (s_chan[ch].spos >> 6) & ~3;
+ vl = (spos >> 6) & ~3;
gpos = s_chan[ch].SB[28];
- vr=(gauss[vl]*gval0)&~2047;
+ vr=(gauss[vl]*(int)gval0)&~2047;
vr+=(gauss[vl+1]*gval(1))&~2047;
vr+=(gauss[vl+2]*gval(2))&~2047;
vr+=(gauss[vl+3]*gval(3))&~2047;
return fa;
}
-////////////////////////////////////////////////////////////////////////
-// MAIN SPU FUNCTION
-// here is the main job handler... thread, timer or direct func call
-// basically the whole sound processing is done in this fat func!
-////////////////////////////////////////////////////////////////////////
+static void decode_block_data(int *dest, const unsigned char *src, int predict_nr, int shift_factor)
+{
+ int nSample;
+ int fa, s_1, s_2, d, s;
-// 5 ms waiting phase, if buffer is full and no new sound has to get started
-// .. can be made smaller (smallest val: 1 ms), but bigger waits give
-// better performance
+ s_1 = dest[27];
+ s_2 = dest[26];
-#define PAUSE_W 5
-#define PAUSE_L 5000
+ for (nSample = 0; nSample < 28; src++)
+ {
+ d = (int)*src;
+ s = (int)(signed short)((d & 0x0f) << 12);
-////////////////////////////////////////////////////////////////////////
+ fa = s >> shift_factor;
+ fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
+ s_2=s_1;s_1=fa;
+
+ dest[nSample++] = fa;
-static void *MAINThread(void *arg)
+ s = (int)(signed short)((d & 0xf0) << 8);
+ fa = s >> shift_factor;
+ fa += ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
+ s_2=s_1;s_1=fa;
+
+ dest[nSample++] = fa;
+ }
+}
+
+static int decode_block(int ch)
{
- int s_1,s_2,fa,ns,ns_from,ns_to;
-#if !defined(_MACOSX) && !defined(__arm__)
- int voldiv = iVolume;
-#else
- const int voldiv = 2;
-#endif
- unsigned char * start;unsigned int nSample;
- int ch,predict_nr,shift_factor,flags,d,s;
- int bIRQReturn=0;
+ unsigned char *start;
+ int predict_nr,shift_factor,flags;
+ int stop = 0;
+ int ret = 0;
- while(!bEndThread) // until we are shutting down
- {
- // ok, at the beginning we are looking if there is
- // enuff free place in the dsound/oss buffer to
- // fill in new data, or if there is a new channel to start.
- // if not, we wait (thread) or return (timer/spuasync)
- // until enuff free place is available/a new channel gets
- // started
-
- if(dwNewChannel) // new channel should start immedately?
- { // (at least one bit 0 ... MAXCHANNEL is set?)
- iSecureStart++; // -> set iSecure
- 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)
- }
- else iSecureStart=0; // 0: no new channel should start
+ start = s_chan[ch].pCurr; // set up the current pos
+ if(start == spu.spuMemC) // ?
+ stop = 1;
- while(!iSecureStart && !bEndThread && // no new start? no thread end?
- (SoundGetBytesBuffered()>TESTSIZE)) // and still enuff data in sound buffer?
- {
- iSecureStart=0; // reset secure
+ if(s_chan[ch].prevflags&1) // 1: stop/loop
+ {
+ if(!(s_chan[ch].prevflags&2))
+ stop = 1;
- if(iUseTimer) return 0; // linux no-thread mode? bye
- usleep(PAUSE_L); // else sleep for x ms (linux)
+ start = s_chan[ch].pLoop;
+ }
+ else
+ ret = check_irq(ch, start); // hack, see check_irq below..
- if(dwNewChannel) iSecureStart=1; // if a new channel kicks in (or, of course, sound buffer runs low), we will leave the loop
- }
+ if(stop)
+ {
+ spu.dwChannelOn &= ~(1<<ch); // -> turn everything off
+ s_chan[ch].bStop = 1;
+ s_chan[ch].ADSRX.EnvelopeVol = 0;
+ }
- //--------------------------------------------------// continue from irq handling in timer mode?
+ predict_nr=(int)start[0];
+ shift_factor=predict_nr&0xf;
+ predict_nr >>= 4;
- ns_from=0;
- ns_to=NSSIZE;
- ch=0;
- if(lastch>=0) // will be -1 if no continue is pending
- {
- ch=lastch; ns_from=lastns+1; lastch=-1; // -> setup all kind of vars to continue
- }
+ decode_block_data(s_chan[ch].SB, start + 2, predict_nr, shift_factor);
- //--------------------------------------------------//
- //- main channel loop -//
- //--------------------------------------------------//
- {
- for(;ch<MAXCHAN;ch++) // loop em all... we will collect 1 ms of sound of each playing channel
- {
- if(dwNewChannel&(1<<ch)) StartSound(ch); // start new sound
- if(!(dwChannelOn&(1<<ch))) continue; // channel not playing? next
+ flags=(int)start[1];
+ if(flags&4)
+ s_chan[ch].pLoop=start; // loop adress
- if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency?
- VoiceChangeFrequency(ch);
+ start+=16;
- for(ns=ns_from;ns<ns_to;ns++) // loop until 1 ms of data is reached
- {
- int sval;
+ if(flags&1) { // 1: stop/loop
+ start = s_chan[ch].pLoop;
+ ret |= check_irq(ch, start); // hack.. :(
+ }
- if(s_chan[ch].bFMod==1 && iFMod[ns]) // fmod freq channel
- FModChangeFrequency(ch,ns);
+ if (start - spu.spuMemC >= 0x80000)
+ start = spu.spuMemC;
- while(s_chan[ch].spos>=0x10000L)
- {
- if(s_chan[ch].iSBPos==28) // 28 reached?
- {
- start=s_chan[ch].pCurr; // set up the current pos
-
- if (start == (unsigned char*)-1) // special "stop" sign
- {
- dwChannelOn&=~(1<<ch); // -> turn everything off
- s_chan[ch].ADSRX.EnvelopeVol=0;
- goto ENDX; // -> and done for this channel
- }
-
- s_chan[ch].iSBPos=0;
-
- //////////////////////////////////////////// spu irq handler here? mmm... do it later
-
- s_1=s_chan[ch].s_1;
- s_2=s_chan[ch].s_2;
-
- predict_nr=(int)*start;start++;
- shift_factor=predict_nr&0xf;
- predict_nr >>= 4;
- flags=(int)*start;start++;
-
- // -------------------------------------- //
-
- for (nSample=0;nSample<28;start++)
- {
- d=(int)*start;
- s=((d&0xf)<<12);
- if(s&0x8000) s|=0xffff0000;
-
- fa=(s >> shift_factor);
- fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
- s_2=s_1;s_1=fa;
- s=((d & 0xf0) << 8);
-
- s_chan[ch].SB[nSample++]=fa;
-
- if(s&0x8000) s|=0xffff0000;
- fa=(s>>shift_factor);
- fa=fa + ((s_1 * f[predict_nr][0])>>6) + ((s_2 * f[predict_nr][1])>>6);
- s_2=s_1;s_1=fa;
-
- s_chan[ch].SB[nSample++]=fa;
- }
-
- //////////////////////////////////////////// irq check
-
- if(irqCallback && (spuCtrl&0x40)) // some callback and irq active?
- {
- if((pSpuIrq > start-16 && // irq address reached?
- pSpuIrq <= start) ||
- ((flags&1) && // special: irq on looping addr, when stop/loop flag is set
- (pSpuIrq > s_chan[ch].pLoop-16 &&
- pSpuIrq <= s_chan[ch].pLoop)))
- {
- irqCallback(); // -> call main emu
-
- if(iSPUIRQWait) // -> option: wait after irq for main emu
- {
- iSpuAsyncWait=1;
- bIRQReturn=1;
- lastch=ch;
- lastns=ns;
- ns_to=ns+1;
- }
- }
- }
-
- //////////////////////////////////////////// flag handler
-
- if((flags&4) && (!s_chan[ch].bIgnoreLoop))
- s_chan[ch].pLoop=start-16; // loop adress
-
- if(flags&1) // 1: stop/loop
- {
- // We play this block out first...
- //if(!(flags&2)) // 1+2: do loop... otherwise: stop
- if((flags!=3 && flags!=7) // PETE: if we don't check exactly for 3, loop hang ups will happen (DQ4, for example)
- || s_chan[ch].pLoop==NULL) // and checking if pLoop is set avoids crashes, yeah
- {
- start = (unsigned char*)-1;
- // Actua Soccer 2, Jungle Book, other games that check for this condition
- s_chan[ch].ADSRX.EnvelopeVol = 0;
- }
- else
- {
- start = s_chan[ch].pLoop;
- }
- }
-
- if (start - spuMemC >= 0x80000)
- start = (unsigned char*)-1;
-
- s_chan[ch].pCurr=start; // store values for next cycle
- s_chan[ch].s_1=s_1;
- s_chan[ch].s_2=s_2;
- }
-
- fa=s_chan[ch].SB[s_chan[ch].iSBPos++]; // get sample data
-
- StoreInterpolationVal(ch,fa); // store val for later interpolation
-
- s_chan[ch].spos -= 0x10000L;
- }
+ s_chan[ch].pCurr = start; // store values for next cycle
+ s_chan[ch].prevflags = flags;
- if(s_chan[ch].bNoise)
- fa=iGetNoiseVal(ch); // get noise val
- else fa=iGetInterpolationVal(ch); // get sample val
+ return ret;
+}
- sval = (MixADSR(ch) * fa) / 1023; // mix adsr
+// do block, but ignore sample data
+static int skip_block(int ch)
+{
+ unsigned char *start = s_chan[ch].pCurr;
+ int flags = start[1];
+ int ret = check_irq(ch, start);
- if(s_chan[ch].bFMod==2) // fmod freq channel
- iFMod[ns]=sval; // -> store 1T sample data, use that to do fmod on next channel
- else // no fmod freq channel
- {
- //////////////////////////////////////////////
- // ok, left/right sound volume (psx volume goes from 0 ... 0x3fff)
+ if(s_chan[ch].prevflags & 1)
+ start = s_chan[ch].pLoop;
- SSumLR[ns*2] +=(sval*s_chan[ch].iLeftVolume)/0x4000L;
- SSumLR[ns*2+1]+=(sval*s_chan[ch].iRightVolume)/0x4000L;
+ if(flags & 4)
+ s_chan[ch].pLoop = start;
- //////////////////////////////////////////////
- // now let us store sound data for reverb
+ start += 16;
- if(s_chan[ch].bRVBActive) StoreREVERB(ch,ns,sval);
- }
+ if(flags & 1)
+ start = s_chan[ch].pLoop;
- ////////////////////////////////////////////////
- // ok, go on until 1 ms data of this channel is collected
+ s_chan[ch].pCurr = start;
+ s_chan[ch].prevflags = flags;
- s_chan[ch].spos += s_chan[ch].sinc;
- }
-ENDX: ;
- }
- }
+ return ret;
+}
- if(bIRQReturn) // special return for "spu irq - wait for cpu action"
- {
- bIRQReturn=0;
- if(iUseTimer!=2)
- {
- DWORD dwWatchTime=timeGetTime_spu()+2500;
-
- while(iSpuAsyncWait && !bEndThread &&
- timeGetTime_spu()<dwWatchTime)
- usleep(1000L);
- continue;
- }
- else
- {
- return 0;
- }
- }
+// if irq is going to trigger sooner than in upd_samples, set upd_samples
+static void scan_for_irq(int ch, unsigned int *upd_samples)
+{
+ int pos, sinc, sinc_inv, end;
+ unsigned char *block;
+ int flags;
+
+ block = s_chan[ch].pCurr;
+ pos = s_chan[ch].spos;
+ sinc = s_chan[ch].sinc;
+ end = pos + *upd_samples * sinc;
+
+ pos += (28 - s_chan[ch].iSBPos) << 16;
+ while (pos < end)
+ {
+ if (block == spu.pSpuIrq)
+ break;
+ flags = block[1];
+ block += 16;
+ if (flags & 1) { // 1: stop/loop
+ block = s_chan[ch].pLoop;
+ if (block == spu.pSpuIrq) // hack.. (see decode_block)
+ break;
+ }
+ pos += 28 << 16;
+ }
+ if (pos < end)
+ {
+ sinc_inv = s_chan[ch].sinc_inv;
+ if (sinc_inv == 0)
+ sinc_inv = s_chan[ch].sinc_inv = (0x80000000u / (uint32_t)sinc) << 1;
- //---------------------------------------------------//
- //- here we have another 1 ms of sound data
- //---------------------------------------------------//
- // mix XA infos (if any)
+ pos -= s_chan[ch].spos;
+ *upd_samples = (((uint64_t)pos * sinc_inv) >> 32) + 1;
+ //xprintf("ch%02d: irq sched: %3d %03d\n",
+ // ch, *upd_samples, *upd_samples * 60 * 263 / 44100);
+ }
+}
- MixXA();
-
- ///////////////////////////////////////////////////////
- // mix all channels (including reverb) into one buffer
+#define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
+static noinline int do_samples_##name(int ch, int ns, int ns_to) \
+{ \
+ int sinc = s_chan[ch].sinc; \
+ int spos = s_chan[ch].spos; \
+ int sbpos = s_chan[ch].iSBPos; \
+ int *SB = s_chan[ch].SB; \
+ int ret = -1; \
+ int d, fa; \
+ interp_start; \
+ \
+ for (; ns < ns_to; ns++) \
+ { \
+ fmod_code; \
+ \
+ spos += sinc; \
+ while (spos >= 0x10000) \
+ { \
+ fa = SB[sbpos++]; \
+ if(sbpos >= 28) \
+ { \
+ sbpos = 0; \
+ d = decode_block(ch); \
+ if(d) \
+ ret = /*ns_to =*/ ns + 1; \
+ } \
+ \
+ interp1_code; \
+ spos -= 0x10000; \
+ } \
+ \
+ interp2_code; \
+ } \
+ \
+ s_chan[ch].sinc = sinc; \
+ s_chan[ch].spos = spos; \
+ s_chan[ch].iSBPos = sbpos; \
+ interp_end; \
+ \
+ return ret; \
+}
- for (ns = 0; ns < NSSIZE*2; )
- {
- SSumLR[ns] += MixREVERBLeft(ns/2);
+#define fmod_recv_check \
+ if(s_chan[ch].bFMod==1 && iFMod[ns]) \
+ sinc = FModChangeFrequency(ch,ns)
- d = SSumLR[ns] / voldiv; SSumLR[ns] = 0;
- if (d < -32767) d = -32767; if (d > 32767) d = 32767;
- *pS++ = d;
- ns++;
+make_do_samples(default, fmod_recv_check, ,
+ StoreInterpolationVal(ch, fa),
+ ChanBuf[ns] = iGetInterpolationVal(ch, spos), )
+make_do_samples(noint, , fa = s_chan[ch].SB[29], , ChanBuf[ns] = fa, s_chan[ch].SB[29] = fa)
- SSumLR[ns] += MixREVERBRight();
+#define simple_interp_store \
+ s_chan[ch].SB[28] = 0; \
+ s_chan[ch].SB[29] = s_chan[ch].SB[30]; \
+ s_chan[ch].SB[30] = s_chan[ch].SB[31]; \
+ s_chan[ch].SB[31] = fa; \
+ s_chan[ch].SB[32] = 1
- d = SSumLR[ns] / voldiv; SSumLR[ns] = 0;
- if(d < -32767) d = -32767; if(d > 32767) d = 32767;
- *pS++ = d;
- ns++;
- }
+#define simple_interp_get \
+ if(sinc<0x10000) /* -> upsampling? */ \
+ InterpolateUp(ch); /* --> interpolate up */ \
+ else InterpolateDown(ch); /* --> else down */ \
+ ChanBuf[ns] = s_chan[ch].SB[29]
+
+make_do_samples(simple, , ,
+ simple_interp_store, simple_interp_get, )
+
+static noinline int do_samples_noise(int ch, int ns, int ns_to)
+{
+ int level, shift, bit;
+ int ret = -1, d;
+
+ s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns);
+ while (s_chan[ch].spos >= 28*0x10000)
+ {
+ d = skip_block(ch);
+ if (d)
+ ret = ns_to;
+ s_chan[ch].spos -= 28*0x10000;
+ }
+
+ // modified from DrHell/shalma, no fraction
+ level = (spu.spuCtrl >> 10) & 0x0f;
+ level = 0x8000 >> level;
+
+ for (; ns < ns_to; ns++)
+ {
+ spu.dwNoiseCount += 2;
+ if (spu.dwNoiseCount >= level)
+ {
+ spu.dwNoiseCount -= level;
+ shift = (spu.dwNoiseVal >> 10) & 0x1f;
+ bit = (0x69696969 >> shift) & 1;
+ if (spu.dwNoiseVal & 0x8000)
+ bit ^= 1;
+ spu.dwNoiseVal = (spu.dwNoiseVal << 1) | bit;
+ }
+
+ ChanBuf[ns] = (signed short)spu.dwNoiseVal;
+ }
+
+ return ret;
+}
+
+#ifdef HAVE_ARMV5
+// asm code; lv and rv must be 0-3fff
+extern void mix_chan(int start, int count, int lv, int rv);
+extern void mix_chan_rvb(int start, int count, int lv, int rv, int *rvb);
+#else
+static void mix_chan(int start, int count, int lv, int rv)
+{
+ int *dst = SSumLR + start * 2;
+ const int *src = ChanBuf + start;
+ int l, r;
- //////////////////////////////////////////////////////
+ while (count--)
+ {
+ int sval = *src++;
+
+ l = (sval * lv) >> 14;
+ r = (sval * rv) >> 14;
+ *dst++ += l;
+ *dst++ += r;
+ }
+}
+
+static void mix_chan_rvb(int start, int count, int lv, int rv, int *rvb)
+{
+ int *dst = SSumLR + start * 2;
+ int *drvb = rvb + start * 2;
+ const int *src = ChanBuf + start;
+ int l, r;
+
+ while (count--)
+ {
+ int sval = *src++;
+
+ l = (sval * lv) >> 14;
+ r = (sval * rv) >> 14;
+ *dst++ += l;
+ *dst++ += r;
+ *drvb++ += l;
+ *drvb++ += r;
+ }
+}
+#endif
+
+// 0x0800-0x0bff Voice 1
+// 0x0c00-0x0fff Voice 3
+static noinline void do_decode_bufs(int which, int start, int count)
+{
+ const int *src = ChanBuf + start;
+ unsigned short *dst = &spu.spuMem[0x800/2 + which*0x400/2];
+ int cursor = spu.decode_pos + start;
+
+ while (count-- > 0)
+ {
+ cursor &= 0x1ff;
+ dst[cursor] = *src++;
+ cursor++;
+ }
+
+ // decode_pos is updated and irqs are checked later, after voice loop
+}
+
+////////////////////////////////////////////////////////////////////////
+// MAIN SPU FUNCTION
+// here is the main job handler...
+// basically the whole sound processing is done in this fat func!
+////////////////////////////////////////////////////////////////////////
+
+void do_samples(unsigned int cycles_to)
+{
+ const int ns_from = 0;
+ int ns,ns_to,ns_len;
+ int volmult = spu_config.iVolume;
+ int ch,d,silentch;
+ int cycle_diff;
+
+ cycle_diff = cycles_to - spu.cycles_played;
+ if (cycle_diff < -2*1048576 || cycle_diff > 2*1048576)
+ {
+ //xprintf("desync %u %d\n", cycles_to, cycle_diff);
+ spu.cycles_played = cycles_to;
+ return;
+ }
+
+ if (cycle_diff < 2 * 768)
+ return;
+
+ ns_to = (cycle_diff / 768 + 1) & ~1;
+ if (ns_to > NSSIZE) {
+ // should never happen
+ //xprintf("ns_to oflow %d %d\n", ns_to, NSSIZE);
+ ns_to = NSSIZE;
+ }
+
+ //////////////////////////////////////////////////////
// special irq handling in the decode buffers (0x0000-0x1000)
- // we know:
+ // we know:
// the decode buffers are located in spu memory in the following way:
// 0x0000-0x03ff CD audio left
// 0x0400-0x07ff CD audio right
// 0x0800-0x0bff Voice 1
// 0x0c00-0x0fff Voice 3
// and decoded data is 16 bit for one sample
- // we assume:
+ // we assume:
// even if voices 1/3 are off or no cd audio is playing, the internal
// play positions will move on and wrap after 0x400 bytes.
- // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
+ // Therefore: we just need a pointer from spumem+0 to spumem+3ff, and
// increase this pointer on each sample by 2 bytes. If this pointer
// (or 0x400 offsets of this pointer) hits the spuirq address, we generate
- // an IRQ. Only problem: the "wait for cpu" option is kinda hard to do here
- // in some of Peops timer modes. So: we ignore this option here (for now).
+ // an IRQ.
- if(pMixIrq && irqCallback)
+ if (unlikely((spu.spuCtrl & CTRL_IRQ)
+ && spu.pSpuIrq < spu.spuMemC+0x1000))
{
- for(ns=0;ns<NSSIZE;ns++)
+ int irq_pos = (spu.pSpuIrq - spu.spuMemC) / 2 & 0x1ff;
+ int left = (irq_pos - spu.decode_pos) & 0x1ff;
+ if (0 < left && left <= ns_to)
{
- if((spuCtrl&0x40) && pSpuIrq && pSpuIrq<spuMemC+0x1000)
- {
- for(ch=0;ch<4;ch++)
- {
- if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2)
- irqCallback();
- }
- }
- pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC;
+ //xprintf("decoder irq %x\n", spu.decode_pos);
+ do_irq();
}
}
- InitREVERB();
+ InitREVERB(ns_to);
+
+ {
+ silentch=~(spu.dwChannelOn|spu.dwNewChannel);
+
+ //--------------------------------------------------//
+ //- main channel loop -//
+ //--------------------------------------------------//
+ {
+ for(ch=0;ch<MAXCHAN;ch++) // loop em all...
+ {
+ if(spu.dwNewChannel&(1<<ch)) StartSound(ch); // start new sound
+ if(!(spu.dwChannelOn&(1<<ch))) continue; // channel not playing? next
+
+ if(s_chan[ch].bNoise)
+ do_samples_noise(ch, ns_from, ns_to);
+ else if(s_chan[ch].bFMod==2 || (s_chan[ch].bFMod==0 && spu_config.iUseInterpolation==0))
+ do_samples_noint(ch, ns_from, ns_to);
+ else if(s_chan[ch].bFMod==0 && spu_config.iUseInterpolation==1)
+ do_samples_simple(ch, ns_from, ns_to);
+ else
+ do_samples_default(ch, ns_from, ns_to);
+
+ ns_len = ns_to - ns_from;
+
+ MixADSR(ch, ns_from, ns_to);
+
+ if(ch==1 || ch==3)
+ {
+ do_decode_bufs(ch/2, ns_from, ns_len);
+ spu.decode_dirty_ch |= 1<<ch;
+ }
- // feed the sound
- // wanna have around 1/60 sec (16.666 ms) updates
- if (iCycle++ > 16)
+ if(s_chan[ch].bFMod==2) // fmod freq channel
+ memcpy(&iFMod[ns_from], &ChanBuf[ns_from], ns_len * sizeof(iFMod[0]));
+ if(s_chan[ch].bRVBActive)
+ mix_chan_rvb(ns_from, ns_len, s_chan[ch].iLeftVolume, s_chan[ch].iRightVolume, spu.sRVBStart);
+ else
+ mix_chan(ns_from, ns_len, s_chan[ch].iLeftVolume, s_chan[ch].iRightVolume);
+ }
+ }
+
+ // advance "stopped" channels that can cause irqs
+ // (all chans are always playing on the real thing..)
+ if(spu.spuCtrl&CTRL_IRQ)
+ for(ch=0;ch<MAXCHAN;ch++)
+ {
+ if(!(silentch&(1<<ch))) continue; // already handled
+ if(spu.dwChannelDead&(1<<ch)) continue;
+ if(s_chan[ch].pCurr > spu.pSpuIrq && s_chan[ch].pLoop > spu.pSpuIrq)
+ continue;
+
+ s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns_from);
+ while(s_chan[ch].spos >= 28 * 0x10000)
+ {
+ unsigned char *start = s_chan[ch].pCurr;
+
+ skip_block(ch);
+ if(start == s_chan[ch].pCurr || start - spu.spuMemC < 0x1000)
+ {
+ // looping on self or stopped(?)
+ spu.dwChannelDead |= 1<<ch;
+ s_chan[ch].spos = 0;
+ break;
+ }
+
+ s_chan[ch].spos -= 28 * 0x10000;
+ }
+ }
+
+ if(unlikely(silentch & spu.decode_dirty_ch & (1<<1))) // must clear silent channel decode buffers
{
- SoundFeedStreamData((unsigned char *)pSpuBuffer,
- ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer));
- pS = (short *)pSpuBuffer;
- iCycle = 0;
+ memset(&spu.spuMem[0x800/2], 0, 0x400);
+ spu.decode_dirty_ch &= ~(1<<1);
}
+ if(unlikely(silentch & spu.decode_dirty_ch & (1<<3)))
+ {
+ memset(&spu.spuMem[0xc00/2], 0, 0x400);
+ spu.decode_dirty_ch &= ~(1<<3);
+ }
+
+ //---------------------------------------------------//
+ // mix XA infos (if any)
+
+ MixXA(ns_to);
+
+ ///////////////////////////////////////////////////////
+ // mix all channels (including reverb) into one buffer
+
+ if(spu_config.iUseReverb)
+ REVERBDo(ns_to);
+
+ if((spu.spuCtrl&0x4000)==0) // muted? (rare, don't optimize for this)
+ {
+ memset(spu.pS, 0, ns_to * 2 * sizeof(spu.pS[0]));
+ spu.pS += ns_to * 2;
+ }
+ else
+ for (ns = 0; ns < ns_to * 2; )
+ {
+ d = SSumLR[ns]; SSumLR[ns] = 0;
+ d = d * volmult >> 10;
+ ssat32_to_16(d);
+ *spu.pS++ = d;
+ ns++;
+
+ d = SSumLR[ns]; SSumLR[ns] = 0;
+ d = d * volmult >> 10;
+ ssat32_to_16(d);
+ *spu.pS++ = d;
+ ns++;
+ }
+
+ spu.cycles_played += ns_to * 768;
+
+ spu.decode_pos = (spu.decode_pos + ns_to) & 0x1ff;
}
+}
- // end of big main loop...
+void schedule_next_irq(void)
+{
+ unsigned int upd_samples;
+ int ch;
- bThreadEnded = 1;
+ if (spu.scheduleCallback == NULL)
+ return;
- return 0;
+ upd_samples = 44100 / 50;
+
+ for (ch = 0; ch < MAXCHAN; ch++)
+ {
+ if (spu.dwChannelDead & (1 << ch))
+ continue;
+ if ((unsigned long)(spu.pSpuIrq - s_chan[ch].pCurr) > IRQ_NEAR_BLOCKS * 16
+ && (unsigned long)(spu.pSpuIrq - s_chan[ch].pLoop) > IRQ_NEAR_BLOCKS * 16)
+ continue;
+
+ scan_for_irq(ch, &upd_samples);
+ }
+
+ if (unlikely(spu.pSpuIrq < spu.spuMemC + 0x1000))
+ {
+ int irq_pos = (spu.pSpuIrq - spu.spuMemC) / 2 & 0x1ff;
+ int left = (irq_pos - spu.decode_pos) & 0x1ff;
+ if (0 < left && left < upd_samples) {
+ //xprintf("decode: %3d (%3d/%3d)\n", left, spu.decode_pos, irq_pos);
+ upd_samples = left;
+ }
+ }
+
+ if (upd_samples < 44100 / 50)
+ spu.scheduleCallback(upd_samples * 768);
}
// SPU ASYNC... even newer epsxe func
// 1 time every 'cycle' cycles... harhar
-void CALLBACK SPUasync(unsigned long cycle)
+// rearmed: called dynamically now
+
+void CALLBACK SPUasync(unsigned int cycle, unsigned int flags)
{
- if(iSpuAsyncWait)
- {
- iSpuAsyncWait++;
- if(iSpuAsyncWait<=16) return;
- iSpuAsyncWait=0;
- }
+ do_samples(cycle);
- if(iUseTimer==2) // special mode, only used in Linux by this spu (or if you enable the experimental Windows mode)
- {
- if(!bSpuInit) return; // -> no init, no call
+ if (spu.spuCtrl & CTRL_IRQ)
+ schedule_next_irq();
- MAINThread(0); // -> linux high-compat mode
+ if (flags & 1) {
+ out_current->feed(spu.pSpuBuffer, (unsigned char *)spu.pS - spu.pSpuBuffer);
+ spu.pS = (short *)spu.pSpuBuffer;
- // abuse iSpuAsyncWait mechanism to reduce calls to above function
- // to make it do larger chunks
- // note: doing it less often than once per frame causes skips
- iSpuAsyncWait=1;
+ if (spu_config.iTempo) {
+ if (!out_current->busy())
+ // cause more samples to be generated
+ // (and break some games because of bad sync)
+ spu.cycles_played -= 44100 / 60 / 2 * 768;
}
+ }
}
// SPU UPDATE... new epsxe func
void CALLBACK SPUupdate(void)
{
- SPUasync(0);
}
// XA AUDIO
}
// CDDA AUDIO
-void CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
+int CALLBACK SPUplayCDDAchannel(short *pcm, int nbytes)
{
- if (!pcm) return;
- if (nbytes<=0) return;
+ if (!pcm) return -1;
+ if (nbytes<=0) return -1;
- FeedCDDA((unsigned char *)pcm, nbytes);
+ return FeedCDDA((unsigned char *)pcm, nbytes);
}
-// SETUPTIMER: init of certain buffers and threads/timers
-void SetupTimer(void)
+// to be called after state load
+void ClearWorkingState(void)
{
memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers
- memset(iFMod,0,NSSIZE*sizeof(int));
- pS=(short *)pSpuBuffer; // setup soundbuffer pointer
-
- bEndThread=0; // init thread vars
- bThreadEnded=0;
- bSpuInit=1; // flag: we are inited
-
- if(!iUseTimer) // linux: use thread
- {
- pthread_create(&thread, NULL, MAINThread, NULL);
- }
-}
-
-// REMOVETIMER: kill threads/timers
-void RemoveTimer(void)
-{
- bEndThread=1; // raise flag to end thread
-
- if(!iUseTimer) // linux tread?
- {
- int i=0;
- while(!bThreadEnded && i<2000) {usleep(1000L);i++;} // -> wait until thread has ended
- if(thread!=(pthread_t)-1) {pthread_cancel(thread);thread=(pthread_t)-1;} // -> cancel thread anyway
- }
-
- bThreadEnded=0; // no more spu is running
- bSpuInit=0;
+ memset(iFMod,0,sizeof(iFMod));
+ spu.pS=(short *)spu.pSpuBuffer; // setup soundbuffer pointer
}
// SETUPSTREAMS: init most of the spu buffers
{
int i;
- pSpuBuffer=(unsigned char *)malloc(32768); // alloc mixing buffer
-
- if(iUseReverb==1) i=88200*2;
- else i=NSSIZE*2;
+ spu.pSpuBuffer = (unsigned char *)malloc(32768); // alloc mixing buffer
+ spu.sRVBStart = (int *)malloc(NSSIZE*2*4); // alloc reverb buffer
+ memset(spu.sRVBStart,0,NSSIZE*2*4);
- sRVBStart = (int *)malloc(i*4); // alloc reverb buffer
- memset(sRVBStart,0,i*4);
- sRVBEnd = sRVBStart + i;
- sRVBPlay = sRVBStart;
-
- XAStart = // alloc xa buffer
+ spu.XAStart = // alloc xa buffer
(uint32_t *)malloc(44100 * sizeof(uint32_t));
- XAEnd = XAStart + 44100;
- XAPlay = XAStart;
- XAFeed = XAStart;
+ spu.XAEnd = spu.XAStart + 44100;
+ spu.XAPlay = spu.XAStart;
+ spu.XAFeed = spu.XAStart;
- CDDAStart = // alloc cdda buffer
- (uint32_t *)malloc(16384 * sizeof(uint32_t));
- CDDAEnd = CDDAStart + 16384;
- CDDAPlay = CDDAStart;
- CDDAFeed = CDDAStart;
+ spu.CDDAStart = // alloc cdda buffer
+ (uint32_t *)malloc(CDDA_BUFFER_SIZE);
+ spu.CDDAEnd = spu.CDDAStart + 16384;
+ spu.CDDAPlay = spu.CDDAStart;
+ spu.CDDAFeed = spu.CDDAStart;
for(i=0;i<MAXCHAN;i++) // loop sound channels
{
-// we don't use mutex sync... not needed, would only
-// slow us down:
-// s_chan[i].hMutex=CreateMutex(NULL,FALSE,NULL);
s_chan[i].ADSRX.SustainLevel = 0xf; // -> init sustain
- s_chan[i].pLoop=spuMemC;
- s_chan[i].pStart=spuMemC;
- s_chan[i].pCurr=spuMemC;
+ s_chan[i].ADSRX.SustainIncrease = 1;
+ s_chan[i].pLoop=spu.spuMemC;
+ s_chan[i].pCurr=spu.spuMemC;
}
- pMixIrq=spuMemC; // enable decoded buffer irqs by setting the address
+ ClearWorkingState();
+
+ spu.bSpuInit=1; // flag: we are inited
}
// REMOVESTREAMS: free most buffer
void RemoveStreams(void)
{
- free(pSpuBuffer); // free mixing buffer
- pSpuBuffer = NULL;
- free(sRVBStart); // free reverb buffer
- sRVBStart = NULL;
- free(XAStart); // free XA buffer
- XAStart = NULL;
- free(CDDAStart); // free CDDA buffer
- CDDAStart = NULL;
+ free(spu.pSpuBuffer); // free mixing buffer
+ spu.pSpuBuffer = NULL;
+ free(spu.sRVBStart); // free reverb buffer
+ spu.sRVBStart = NULL;
+ free(spu.XAStart); // free XA buffer
+ spu.XAStart = NULL;
+ free(spu.CDDAStart); // free CDDA buffer
+ spu.CDDAStart = NULL;
}
// INIT/EXIT STUFF
// SPUINIT: this func will be called first by the main emu
long CALLBACK SPUinit(void)
{
- spuMemC = (unsigned char *)spuMem; // just small setup
+ spu.spuMemC = (unsigned char *)spu.spuMem; // just small setup
memset((void *)&rvb, 0, sizeof(REVERBInfo));
InitADSR();
- iVolume = 3;
- iReverbOff = -1;
- spuIrq = 0;
- spuAddr = 0xffffffff;
- bEndThread = 0;
- bThreadEnded = 0;
- spuMemC = (unsigned char *)spuMem;
- pMixIrq = 0;
- memset((void *)s_chan, 0, (MAXCHAN + 1) * sizeof(SPUCHAN));
- pSpuIrq = 0;
- //iSPUIRQWait = 0;
- lastch = -1;
-
- //ReadConfigSPU(); // read user stuff
+ spu.spuAddr = 0xffffffff;
+ spu.decode_pos = 0;
+ memset((void *)s_chan, 0, sizeof(s_chan));
+ spu.pSpuIrq = spu.spuMemC;
+
SetupStreams(); // prepare streaming
+ if (spu_config.iVolume == 0)
+ spu_config.iVolume = 768; // 1024 is 1.0
+
return 0;
}
// SPUOPEN: called by main emu after init
long CALLBACK SPUopen(void)
{
- if (bSPUIsOpen) return 0; // security for some stupid main emus
+ if (spu.bSPUIsOpen) return 0; // security for some stupid main emus
SetupSound(); // setup sound (before init!)
- SetupTimer(); // timer for feeding data
- bSPUIsOpen = 1;
+ spu.bSPUIsOpen = 1;
return PSE_SPU_ERR_SUCCESS;
}
// SPUCLOSE: called before shutdown
long CALLBACK SPUclose(void)
{
- if (!bSPUIsOpen) return 0; // some security
+ if (!spu.bSPUIsOpen) return 0; // some security
- bSPUIsOpen = 0; // no more open
+ spu.bSPUIsOpen = 0; // no more open
- RemoveTimer(); // no more feeding
- RemoveSound(); // no more sound handling
+ out_current->finish(); // no more sound handling
return 0;
}
{
SPUclose();
RemoveStreams(); // no more streaming
+ spu.bSpuInit=0;
return 0;
}
// passes a callback that should be called on SPU-IRQ/cdda volume change
void CALLBACK SPUregisterCallback(void (CALLBACK *callback)(void))
{
- irqCallback = callback;
+ spu.irqCallback = callback;
}
void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned short,unsigned short))
{
- cddavCallback = CDDAVcallback;
+ spu.cddavCallback = CDDAVcallback;
+}
+
+void CALLBACK SPUregisterScheduleCb(void (CALLBACK *callback)(unsigned int))
+{
+ spu.scheduleCallback = callback;
}
// COMMON PLUGIN INFO FUNCS
}
*/
+// debug
+void spu_get_debug_info(int *chans_out, int *run_chans, int *fmod_chans_out, int *noise_chans_out)
+{
+ int ch = 0, fmod_chans = 0, noise_chans = 0, irq_chans = 0;
+
+ for(;ch<MAXCHAN;ch++)
+ {
+ if (!(spu.dwChannelOn & (1<<ch)))
+ continue;
+ if (s_chan[ch].bFMod == 2)
+ fmod_chans |= 1 << ch;
+ if (s_chan[ch].bNoise)
+ noise_chans |= 1 << ch;
+ if((spu.spuCtrl&CTRL_IRQ) && s_chan[ch].pCurr <= spu.pSpuIrq && s_chan[ch].pLoop <= spu.pSpuIrq)
+ irq_chans |= 1 << ch;
+ }
+
+ *chans_out = spu.dwChannelOn;
+ *run_chans = ~spu.dwChannelOn & ~spu.dwChannelDead & irq_chans;
+ *fmod_chans_out = fmod_chans;
+ *noise_chans_out = noise_chans;
+}
+
// vim:shiftwidth=1:expandtab
notaz.gp2x.de / pcsx_rearmed.git / blobdiff