// MIX XA & CDDA
////////////////////////////////////////////////////////////////////////
-INLINE void MixXA(int ns_to, int decode_pos)
+INLINE void MixXA(int *SSumLR, int ns_to, int decode_pos)
{
int cursor = decode_pos;
int ns;
short l, r;
- uint32_t v;
+ uint32_t v = spu.XALastVal;
if(spu.XAPlay != spu.XAFeed || spu.XARepeat > 0)
{
if(spu.XAPlay == spu.XAFeed)
spu.XARepeat--;
- v = spu.XALastVal;
for(ns = 0; ns < ns_to*2; )
{
if(spu.XAPlay != spu.XAFeed) v=*spu.XAPlay++;
}
spu.XALastVal = v;
}
+ // occasionally CDDAFeed underflows by a few samples due to poor timing,
+ // hence this 'ns_to < 8'
+ else if(spu.CDDAPlay != spu.CDDAFeed || ns_to < 8)
+ {
+ for(ns = 0; ns < ns_to*2; )
+ {
+ if(spu.CDDAPlay != spu.CDDAFeed) v=*spu.CDDAPlay++;
+ if(spu.CDDAPlay == spu.CDDAEnd) spu.CDDAPlay=spu.CDDAStart;
- for(ns = 0; ns < ns_to * 2 && spu.CDDAPlay!=spu.CDDAFeed && (spu.CDDAPlay!=spu.CDDAEnd-1||spu.CDDAFeed!=spu.CDDAStart);)
- {
- v=*spu.CDDAPlay++;
- if(spu.CDDAPlay==spu.CDDAEnd) spu.CDDAPlay=spu.CDDAStart;
-
- l = ((int)(short)v * spu.iLeftXAVol) >> 15;
- r = ((int)(short)(v >> 16) * spu.iLeftXAVol) >> 15;
- SSumLR[ns++] += l;
- SSumLR[ns++] += r;
+ l = ((int)(short)v * spu.iLeftXAVol) >> 15;
+ r = ((int)(short)(v >> 16) * spu.iLeftXAVol) >> 15;
+ SSumLR[ns++] += l;
+ SSumLR[ns++] += r;
- spu.spuMem[cursor] = v;
- spu.spuMem[cursor + 0x400/2] = v >> 16;
- cursor = (cursor + 1) & 0x1ff;
- }
+ spu.spuMem[cursor] = v;
+ spu.spuMem[cursor + 0x400/2] = v >> 16;
+ cursor = (cursor + 1) & 0x1ff;
+ }
+ spu.XALastVal = v;
+ }
+ else
+ spu.XALastVal = 0;
}
////////////////////////////////////////////////////////////////////////
spos -= 0x10000L;
}
vl = (spos >> 6) & ~3;
- vr=(gauss[vl]*gvall0)&~2047;
- vr+=(gauss[vl+1]*gvall(1))&~2047;
- vr+=(gauss[vl+2]*gvall(2))&~2047;
- vr+=(gauss[vl+3]*gvall(3))&~2047;
- l= (vr >> 11) & 0xffff;
- vr=(gauss[vl]*gvalr0)&~2047;
- vr+=(gauss[vl+1]*gvalr(1))&~2047;
- vr+=(gauss[vl+2]*gvalr(2))&~2047;
- vr+=(gauss[vl+3]*gvalr(3))&~2047;
- l |= vr << 5;
+ vr=(gauss[vl]*gvall0) >> 15;
+ vr+=(gauss[vl+1]*gvall(1)) >> 15;
+ vr+=(gauss[vl+2]*gvall(2)) >> 15;
+ vr+=(gauss[vl+3]*gvall(3)) >> 15;
+ l= vr & 0xffff;
+ vr=(gauss[vl]*gvalr0) >> 15;
+ vr+=(gauss[vl+1]*gvalr(1)) >> 15;
+ vr+=(gauss[vl+2]*gvalr(2)) >> 15;
+ vr+=(gauss[vl+3]*gvalr(3)) >> 15;
+ l |= vr << 16;
}
else
{
spos -= 0x10000L;
}
vl = (spos >> 6) & ~3;
- vr=(gauss[vl]*gvall0)&~2047;
- vr+=(gauss[vl+1]*gvall(1))&~2047;
- vr+=(gauss[vl+2]*gvall(2))&~2047;
- vr+=(gauss[vl+3]*gvall(3))&~2047;
- l= (vr >> 11) & 0xffff;
- vr=(gauss[vl]*gvalr0)&~2047;
- vr+=(gauss[vl+1]*gvalr(1))&~2047;
- vr+=(gauss[vl+2]*gvalr(2))&~2047;
- vr+=(gauss[vl+3]*gvalr(3))&~2047;
- l |= vr << 5;
+ vr=(gauss[vl]*gvall0) >> 15;
+ vr+=(gauss[vl+1]*gvall(1)) >> 15;
+ vr+=(gauss[vl+2]*gvall(2)) >> 15;
+ vr+=(gauss[vl+3]*gvall(3)) >> 15;
+ l= vr & 0xffff;
+ vr=(gauss[vl]*gvalr0) >> 15;
+ vr+=(gauss[vl+1]*gvalr(1)) >> 15;
+ vr+=(gauss[vl+2]*gvalr(2)) >> 15;
+ vr+=(gauss[vl+3]*gvalr(3)) >> 15;
+ l |= vr << 16;
}
else
{
spos -= 0x10000L;
}
vl = (spos >> 6) & ~3;
- vr=(gauss[vl]*gvall0)&~2047;
- vr+=(gauss[vl+1]*gvall(1))&~2047;
- vr+=(gauss[vl+2]*gvall(2))&~2047;
- vr+=(gauss[vl+3]*gvall(3))&~2047;
- l1=s= vr >> 11;
+ vr=(gauss[vl]*gvall0) >> 15;
+ vr+=(gauss[vl+1]*gvall(1)) >> 15;
+ vr+=(gauss[vl+2]*gvall(2)) >> 15;
+ vr+=(gauss[vl+3]*gvall(3)) >> 15;
+ l1=s= vr;
l1 &= 0xffff;
}
else
spos -= 0x10000L;
}
vl = (spos >> 6) & ~3;
- vr=(gauss[vl]*gvall0)&~2047;
- vr+=(gauss[vl+1]*gvall(1))&~2047;
- vr+=(gauss[vl+2]*gvall(2))&~2047;
- vr+=(gauss[vl+3]*gvall(3))&~2047;
- l=s= vr >> 11;
+ vr=(gauss[vl]*gvall0) >> 15;
+ vr+=(gauss[vl+1]*gvall(1)) >> 15;
+ vr+=(gauss[vl+2]*gvall(2)) >> 15;
+ vr+=(gauss[vl+3]*gvall(3)) >> 15;
+ l=s= vr;
}
else
{