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several pitch fixes and stuff

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pull request #303
This commit is contained in:
tildearrow 2022-03-23 23:19:16 -05:00
parent 3ed38aca5e
commit ece34990e5
5 changed files with 36 additions and 16 deletions
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16
src/engine/platform/segapcm.cpp
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@ -87,15 +87,15 @@ void DivPlatformSegaPCM::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=(chan[i].std.arp<<6)+baseFreqOff;
chan[i].baseFreq=(chan[i].std.arp<<6);
} else {
chan[i].baseFreq=((chan[i].note+(signed char)chan[i].std.arp)<<6)+baseFreqOff;
chan[i].baseFreq=((chan[i].note+(signed char)chan[i].std.arp)<<6);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=(chan[i].note<<6)+baseFreqOff;
chan[i].baseFreq=(chan[i].note<<6);
chan[i].freqChanged=true;
}
}
@ -113,7 +113,7 @@ void DivPlatformSegaPCM::tick() {
DivSample* s=parent->getSample(chan[i].pcm.sample);
off=(double)s->centerRate/8363.0;
}
chan[i].pcm.freq=MIN(255,((off*parent->song.tuning*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250);
chan[i].pcm.freq=MIN(255,(15625+(off*parent->song.tuning*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250);
if (dumpWrites && i>=8) {
addWrite(0x10007+((i-8)<<3),chan[i].pcm.freq);
}
@ -250,17 +250,17 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=(c.value2<<6)+baseFreqOff;
int destFreq=(c.value2<<6);
int newFreq;
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
newFreq=chan[c.chan].baseFreq+c.value;
newFreq=chan[c.chan].baseFreq+c.value*4;
if (newFreq>=destFreq) {
newFreq=destFreq;
return2=true;
}
} else {
newFreq=chan[c.chan].baseFreq-c.value;
newFreq=chan[c.chan].baseFreq-c.value*4;
if (newFreq<=destFreq) {
newFreq=destFreq;
return2=true;
@ -275,7 +275,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=(c.value<<6)+baseFreqOff;
chan[c.chan].baseFreq=(c.value<<6);
chan[c.chan].freqChanged=true;
break;
}