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prepare for sample C-4 freq

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issue #70
This commit is contained in:
tildearrow 2022-01-27 16:52:06 -05:00
parent 3d25cfc501
commit b812fc4041
6 changed files with 34 additions and 18 deletions
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21
src/engine/platform/pce.cpp
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@ -20,8 +20,8 @@ void DivPlatformPCE::acquire(short* bufL, short* bufR, size_t start, size_t len)
// PCM part
for (int i=0; i<6; i++) {
if (chan[i].pcm && chan[i].dacSample!=-1) {
chan[i].dacPeriod-=6;
if (chan[i].dacPeriod<1) {
chan[i].dacPeriod+=chan[i].dacRate;
if (chan[i].dacPeriod>rate) {
DivSample* s=parent->song.sample[chan[i].dacSample];
if (s->rendLength<=0) {
chan[i].dacSample=-1;
@ -42,7 +42,7 @@ void DivPlatformPCE::acquire(short* bufL, short* bufR, size_t start, size_t len)
chan[i].dacSample=-1;
}
}
chan[i].dacPeriod+=chan[i].dacRate;
chan[i].dacPeriod-=rate;
}
}
}
@ -100,7 +100,11 @@ void DivPlatformPCE::tick() {
chan[i].std.next();
if (chan[i].std.hadVol) {
chan[i].outVol=((chan[i].vol&31)*chan[i].std.vol)>>5;
chWrite(i,0x04,0x80|chan[i].outVol);
if (chan[i].furnaceDac) {
// ignore for now
} else {
chWrite(i,0x04,0x80|chan[i].outVol);
}
}
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
@ -132,8 +136,8 @@ void DivPlatformPCE::tick() {
//DivInstrument* ins=parent->getIns(chan[i].ins);
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].furnaceDac) {
chan[i].dacRate=chan[i].freq;
if (dumpWrites) addWrite(0xffff0001+(i<<8),1789773/chan[i].dacRate);
chan[i].dacRate=1789773/chan[i].freq;
if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dacRate);
}
if (chan[i].freq>4095) chan[i].freq=4095;
if (chan[i].note>0x5d) chan[i].freq=0x01;
@ -187,6 +191,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].std.init(ins);
//chan[c.chan].keyOn=true;
chan[c.chan].furnaceDac=true;
} else {
@ -200,10 +205,10 @@ int DivPlatformPCE::dispatch(DivCommand c) {
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
chan[c.chan].dacRate=1789773/parent->song.sample[chan[c.chan].dacSample]->rate;
chan[c.chan].dacRate=parent->song.sample[chan[c.chan].dacSample]->rate;
if (dumpWrites) {
chWrite(c.chan,0x04,0xdf);
addWrite(0xffff0001+(c.chan<<8),1789773/chan[c.chan].dacRate);
addWrite(0xffff0001+(c.chan<<8),chan[c.chan].dacRate);
}
chan[c.chan].furnaceDac=false;
}