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XM import: implement more volume column effects

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tildearrow 2024-07-04 19:28:08 -05:00
parent 68597535fa
commit a816eee5b2
1 changed files with 71 additions and 8 deletions
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79
src/engine/fileOps/xm.cpp
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@ -587,7 +587,6 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
s->loopEnd>>=1;
}
reader.readC(); // reserved
s->centerRate=8363.0*pow(2.0,((double)note+((double)fine/128.0))/12.0);
@ -790,14 +789,78 @@ bool DivEngine::loadXM(unsigned char* file, size_t len) {
if (vol>=0x10 && vol<=0x50) {
p->data[j][3]=vol-0x10;
} else { // effects in volume column
if (vol>=0xc0 && vol<=0xcf) {
p->data[j][effectCol[k]++]=0x80;
if ((vol&15)==8) {
switch (vol>>4) {
case 0x6: // vol slide down
if ((vol&15)!=0) {
volSlideStatus[k]=vol&15;
volSlideStatusChanged[k]=true;
}
if (hasNote || hasIns) {
volSlideStatusChanged[k]=true;
}
volSliding[k]=true;
break;
case 0x7: // vol slide up
if ((vol&15)!=0) {
volSlideStatus[k]=(vol&15)<<4;
volSlideStatusChanged[k]=true;
}
if (hasNote || hasIns) {
volSlideStatusChanged[k]=true;
}
volSliding[k]=true;
break;
case 0x8: // vol slide down (fine)
if ((vol&15)!=0) {
volSlideStatus[k]=0xf0|(vol&15);
volSlideStatusChanged[k]=true;
}
if (hasNote || hasIns) {
volSlideStatusChanged[k]=true;
}
volSliding[k]=true;
break;
case 0x9: // vol slide up (fine)
if ((vol&15)!=0) {
volSlideStatus[k]=((vol&15)<<4)|0xf;
volSlideStatusChanged[k]=true;
}
if (hasNote || hasIns) {
volSlideStatusChanged[k]=true;
}
volSliding[k]=true;
break;
case 0xa: // vibrato speed
if ((vol&15)!=0) {
vibStatus[k]&=0x0f;
vibStatus[k]|=(vol&15)<<4;
vibStatusChanged[k]=true;
}
vibing[k]=true;
break;
case 0xb: // vibrato depth
if ((vol&15)!=0) {
vibStatus[k]&=0xf0;
vibStatus[k]|=vol&15;
vibStatusChanged[k]=true;
}
vibing[k]=true;
break;
case 0xc: // panning
p->data[j][effectCol[k]++]=0x80;
} else {
p->data[j][effectCol[k]++]=(vol&15)|((vol&15)<<4);
}
writePanning=false;
if ((vol&15)==8) {
p->data[j][effectCol[k]++]=0x80;
} else {
p->data[j][effectCol[k]++]=(vol&15)|((vol&15)<<4);
}
writePanning=false;
break;
case 0xd: // pan slide left
break;
case 0xe: // pan slide right
break;
case 0xf: // porta
break;
}
}
}