otomatalabs/furnace
8
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

QSound: implement panning macro - PLEASE READ

Browse source 
the panning strategy for QSound has changed!
it's now 08xy where x is left and y is right (muting is not possible though!)
this makes it consistent with other chips, plus QSound's pan range was
32 anyway

in order to toggle the QSound effect use effect 12xx
This commit is contained in:
tildearrow 2022-04-28 23:58:11 -05:00
parent 2ac0e8af42
commit 5567746e0b
10 changed files with 87 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

25
src/engine/engine.cpp
View file

@ -1041,6 +1041,28 @@ int DivEngine::calcFreq(int base, int pitch, bool period, int octave, int pitch2
base+((pitch*octave)>>1)+pitch2;
}
int DivEngine::convertPanSplitToLinear(unsigned int val, unsigned char bits, int range) {
int panL=val>>bits;
int panR=val&((1<<bits)-1);
int diff=panR-panL;
float pan=0.5f;
if (diff!=0) {
pan=(1.0f+((float)diff/(float)MAX(panL,panR)))*0.5f;
}
return pan*range;
}
unsigned int DivEngine::convertPanLinearToSplit(int val, unsigned char bits, int range) {
if (val<0) val=0;
if (val>range) val=range;
int maxV=(1<<bits)-1;
int panL=(((range-val)*maxV*2))/range;
int panR=((val)*maxV*2)/range;
if (panL>maxV) panL=maxV;
if (panR>maxV) panR=maxV;
return (panL<<bits)|panR;
}
void DivEngine::play() {
BUSY_BEGIN_SOFT;
sPreview.sample=-1;
@ -1473,6 +1495,9 @@ int DivEngine::addInstrument(int refChan) {
default:
break;
}
if (sysOfChan[refChan]==DIV_SYSTEM_QSOUND) {
*ins=song.nullInsQSound;
}
ins->name=fmt::sprintf("Instrument %d",insCount);
ins->type=prefType;
saveLock.lock();