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add song tuning

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soon: system clock settings
This commit is contained in:
tildearrow 2022-01-28 00:55:51 -05:00
parent 0071894471
commit ec66b7a21b
26 changed files with 211 additions and 156 deletions
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21
src/engine/platform/saa.cpp
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@ -6,7 +6,7 @@
#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define PSG_FREQ_BASE 122240.0f
#define CHIP_DIVIDER 2
void DivPlatformSAA1099::acquire(short* bufL, short* bufR, size_t start, size_t len) {
if (saaBufLen<len) {
@ -48,15 +48,15 @@ void DivPlatformSAA1099::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
} else {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note+chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
@ -124,7 +124,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
@ -171,7 +171,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value2/12.0f)));
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value*(8-chan[c.chan].freqH);
@ -202,7 +202,7 @@ int DivPlatformSAA1099::dispatch(DivCommand c) {
}
break;
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=round(PSG_FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
break;
}
@ -308,11 +308,8 @@ void DivPlatformSAA1099::notifyInsDeletion(void* ins) {
}
void DivPlatformSAA1099::setPAL(bool pal) {
if (pal) {
rate=250000;
} else {
rate=250000;
}
chipClock=8000000;
rate=chipClock/32;
}
int DivPlatformSAA1099::init(DivEngine* p, int channels, int sugRate, bool pal) {