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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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19
src/engine/platform/ay8930.cpp
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@ -7,7 +7,7 @@
#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
#define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define PSG_FREQ_BASE 6848.0f
#define CHIP_DIVIDER 8
void DivPlatformAY8930::acquire(short* bufL, short* bufR, size_t start, size_t len) {
if (ayBufLen<len) {
@ -66,15 +66,15 @@ void DivPlatformAY8930::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;
}
}
@ -172,7 +172,7 @@ int DivPlatformAY8930::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;
}
@ -220,7 +220,7 @@ int DivPlatformAY8930::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;
@ -243,7 +243,7 @@ int DivPlatformAY8930::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;
}
@ -392,10 +392,11 @@ void DivPlatformAY8930::notifyInsDeletion(void* ins) {
void DivPlatformAY8930::setPAL(bool pal) {
if (pal) {
rate=221681;
chipClock=COLOR_PAL*2.0/5.0;
} else {
rate=223722;
chipClock=COLOR_NTSC/2.0;
}
rate=chipClock/8;
}
int DivPlatformAY8930::init(DivEngine* p, int channels, int sugRate, bool pal) {