#define _IN_SPU
#include "externals.h"
+#include "registers.h"
#include "cfg.h"
#include "dsoundoss.h"
#include "regs.h"
int iRecordMode=0;
int iUseReverb=2;
int iUseInterpolation=2;
-int iDisStereo=0;
// MAIN infos struct for each channel
unsigned long dwNewChannel=0; // flags for faster testing, if new channel starts
unsigned long dwChannelOn=0;
+unsigned long dwPendingChanOff=0;
void (CALLBACK *irqCallback)(void)=0; // func of main emu, called on spu irq
void (CALLBACK *cddavCallback)(unsigned short,unsigned short)=0;
{ 115, -52 },
{ 98, -55 },
{ 122, -60 } };
-int SSumR[NSSIZE];
-int SSumL[NSSIZE];
+int SSumLR[NSSIZE*2];
int iFMod[NSSIZE];
int iCycle = 0;
short * pS;
return fa;
}
+static void do_irq(void)
+{
+ if(!(spuStat & STAT_IRQ))
+ {
+ spuStat |= STAT_IRQ;
+ if(irqCallback) irqCallback();
+ }
+}
+
+static int decode_block(int ch)
+{
+ unsigned char *start;
+ unsigned int nSample;
+ int predict_nr,shift_factor,flags,d,s;
+ int fa,s_1,s_2;
+ int ret = 0;
+
+ s_chan[ch].iSBPos=0;
+
+ start=s_chan[ch].pCurr; // set up the current pos
+ if(start == (unsigned char*)-1 || // special "stop" sign
+ (dwPendingChanOff&(1<<ch)))
+ {
+ dwChannelOn&=~(1<<ch); // -> turn everything off
+ dwPendingChanOff&=~(1<<ch);
+ s_chan[ch].bStop=1;
+ s_chan[ch].ADSRX.EnvelopeVol=0;
+ return 0; // -> and done for this channel
+ }
+
+ //////////////////////////////////////////// irq check
+
+ if(spuCtrl&CTRL_IRQ)
+ {
+ if(pSpuIrq == start) // irq address reached?
+ {
+ do_irq(); // -> call main emu
+ ret = 1;
+ }
+ }
+
+ 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;
+ }
+
+ //////////////////////////////////////////// flag handler
+
+ if((flags&4) && (!s_chan[ch].bIgnoreLoop))
+ s_chan[ch].pLoop=start-16; // loop adress
+
+ if(flags&1) // 1: stop/loop
+ {
+ if(!(flags&2))
+ dwPendingChanOff|=1<<ch;
+
+ 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;
+
+ return ret;
+}
+
////////////////////////////////////////////////////////////////////////
// MAIN SPU FUNCTION
// here is the main job handler... thread, timer or direct func call
static void *MAINThread(void *arg)
{
- int s_1,s_2,fa,ns,ns_from,ns_to;
+ int 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 ch,d;
int bIRQReturn=0;
while(!bEndThread) // until we are shutting down
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
+ ch=lastch; ns_from=lastns; lastch=-1; // -> setup all kind of vars to continue
}
//--------------------------------------------------//
{
int sval;
+ if(!(dwChannelOn&(1<<ch))) break; // something turned ch off (adsr or flags)
+
if(s_chan[ch].bFMod==1 && iFMod[ns]) // fmod freq channel
FModChangeFrequency(ch,ns);
{
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
+ d = decode_block(ch);
+ if(d && iSPUIRQWait) // -> option: wait after irq for main emu
{
- // We play this block out first...
- //if(!(flags&2)) // 1+2: do loop... otherwise: stop
- if(flags!=3 || s_chan[ch].pLoop==NULL) // PETE: if we don't check exactly for 3, loop hang ups will happen (DQ4, for example)
- { // and checking if pLoop is set avoids crashes, yeah
- start = (unsigned char*)-1;
- }
- else
- {
- start = s_chan[ch].pLoop;
- }
+ bIRQReturn=1;
+ lastch=ch;
+ lastns=ns_to=ns;
+ goto ENDX; // do remaining chans unil this ns
}
-
- 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
fa=iGetNoiseVal(ch); // get noise val
else fa=iGetInterpolationVal(ch); // get sample val
- sval = (MixADSR(ch) * fa) / 1023; // mix adsr
+ sval = (MixADSR(ch) * fa) / 1024; // mix adsr
if(s_chan[ch].bFMod==2) // fmod freq channel
iFMod[ns]=sval; // -> store 1T sample data, use that to do fmod on next channel
//////////////////////////////////////////////
// ok, left/right sound volume (psx volume goes from 0 ... 0x3fff)
- SSumL[ns]+=(sval*s_chan[ch].iLeftVolume)/0x4000L;
- SSumR[ns]+=(sval*s_chan[ch].iRightVolume)/0x4000L;
+ SSumLR[ns*2] +=(sval*s_chan[ch].iLeftVolume)/0x4000L;
+ SSumLR[ns*2+1]+=(sval*s_chan[ch].iRightVolume)/0x4000L;
//////////////////////////////////////////////
// now let us store sound data for reverb
s_chan[ch].spos += s_chan[ch].sinc;
}
-ENDX: ;
+ENDX: ;
}
}
- if(bIRQReturn) // special return for "spu irq - wait for cpu action"
+ if(bIRQReturn && iSPUIRQWait) // special return for "spu irq - wait for cpu action"
{
+ iSpuAsyncWait=1;
bIRQReturn=0;
if(iUseTimer!=2)
{
///////////////////////////////////////////////////////
// mix all channels (including reverb) into one buffer
- if(iDisStereo) // no stereo?
- {
- int dl, dr;
- for (ns = 0; ns < NSSIZE; ns++)
- {
- SSumL[ns] += MixREVERBLeft(ns);
-
- dl = SSumL[ns] / voldiv; SSumL[ns] = 0;
- if (dl < -32767) dl = -32767; if (dl > 32767) dl = 32767;
-
- SSumR[ns] += MixREVERBRight();
-
- dr = SSumR[ns] / voldiv; SSumR[ns] = 0;
- if (dr < -32767) dr = -32767; if (dr > 32767) dr = 32767;
- *pS++ = (dl + dr) / 2;
- }
- }
- else // stereo:
- for (ns = 0; ns < NSSIZE; ns++)
+ for (ns = 0; ns < NSSIZE*2; )
{
- SSumL[ns] += MixREVERBLeft(ns);
+ SSumLR[ns] += MixREVERBLeft(ns/2);
- d = SSumL[ns] / voldiv; SSumL[ns] = 0;
+ d = SSumLR[ns] / voldiv; SSumLR[ns] = 0;
if (d < -32767) d = -32767; if (d > 32767) d = 32767;
*pS++ = d;
+ ns++;
- SSumR[ns] += MixREVERBRight();
+ SSumLR[ns] += MixREVERBRight();
- d = SSumR[ns] / voldiv; SSumR[ns] = 0;
+ d = SSumLR[ns] / voldiv; SSumLR[ns] = 0;
if(d < -32767) d = -32767; if(d > 32767) d = 32767;
*pS++ = d;
+ ns++;
}
//////////////////////////////////////////////////////
// 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).
- if(pMixIrq && irqCallback)
+ if(pMixIrq)
{
for(ns=0;ns<NSSIZE;ns++)
{
for(ch=0;ch<4;ch++)
{
if(pSpuIrq>=pMixIrq+(ch*0x400) && pSpuIrq<pMixIrq+(ch*0x400)+2)
- irqCallback();
+ do_irq();
}
}
pMixIrq+=2;if(pMixIrq>spuMemC+0x3ff) pMixIrq=spuMemC;
// SETUPTIMER: init of certain buffers and threads/timers
void SetupTimer(void)
{
- memset(SSumR,0,NSSIZE*sizeof(int)); // init some mixing buffers
- memset(SSumL,0,NSSIZE*sizeof(int));
+ memset(SSumLR,0,sizeof(SSumLR)); // init some mixing buffers
memset(iFMod,0,NSSIZE*sizeof(int));
pS=(short *)pSpuBuffer; // setup soundbuffer pointer
(uint32_t *)malloc(16384 * sizeof(uint32_t));
CDDAEnd = CDDAStart + 16384;
CDDAPlay = CDDAStart;
- CDDAFeed = CDDAStart + 1;
+ CDDAFeed = CDDAStart;
for(i=0;i<MAXCHAN;i++) // loop sound channels
{
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