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X1-010: implement linear pitch (part 6)

This commit is contained in:
tildearrow 2022-05-11 00:18:46 -05:00
parent 90ac64f1d4
commit ea118db499
1 changed files with 17 additions and 6 deletions
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23
src/engine/platform/x1_010.cpp
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@ -260,20 +260,19 @@ void DivPlatformX1_010::acquire(short* bufL, short* bufR, size_t start, size_t l
}
}
// TODO: linear pitch stuff
double DivPlatformX1_010::NoteX1_010(int ch, int note) {
if (chan[ch].pcm) { // PCM note
double off=1.0;
double off=8192.0;
int sample=chan[ch].sample;
if (sample>=0 && sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(sample);
if (s->centerRate<1) {
off=1.0;
off=8192.0;
} else {
off=s->centerRate/8363.0;
off=8192.0*(s->centerRate/8363.0);
}
}
return off*parent->calcBaseFreq(chipClock,8192,note,false);
return parent->calcBaseFreq(chipClock,off,note,false);
}
// Wavetable note
return NOTE_FREQUENCY(note);
@ -488,7 +487,19 @@ void DivPlatformX1_010::tick(bool sysTick) {
chan[i].envChanged=false;
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE);
double off=8192.0;
if (chan[i].pcm) {
int sample=chan[i].sample;
if (sample>=0 && sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(sample);
if (s->centerRate<1) {
off=8192.0;
} else {
off=8192.0*(s->centerRate/8363.0);
}
}
}
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,chan[i].pcm?off:CHIP_FREQBASE);
if (chan[i].pcm) {
if (chan[i].freq<1) chan[i].freq=1;
if (chan[i].freq>255) chan[i].freq=255;