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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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23
src/engine/platform/pce.cpp
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@ -13,7 +13,7 @@
rWrite(a,v); \
}
#define FREQ_BASE 1712.0f*2
#define CHIP_DIVIDER 32
void DivPlatformPCE::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
@ -109,18 +109,18 @@ void DivPlatformPCE::tick() {
if (chan[i].std.hadArp) {
if (!chan[i].inPorta) {
if (chan[i].std.arpMode) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].std.arp)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
// noise
chWrite(i,0x07,chan[i].noise?(0x80|noiseFreq[(chan[i].std.arp)%12]):0);
} else {
chan[i].baseFreq=round(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);
chWrite(i,0x07,chan[i].noise?(0x80|noiseFreq[(chan[i].note+chan[i].std.arp)%12]):0);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
chan[i].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(chan[i].note)/12.0f)));
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chWrite(i,0x07,chan[i].noise?(0x80|noiseFreq[chan[i].note%12]):0);
chan[i].freqChanged=true;
}
@ -136,7 +136,7 @@ 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=1789773/chan[i].freq;
chan[i].dacRate=chipClock/chan[i].freq;
if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dacRate);
}
if (chan[i].freq>4095) chan[i].freq=4095;
@ -186,7 +186,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(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;
}
@ -215,7 +215,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
break;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(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;
chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|noiseFreq[chan[c.chan].note%12]):0);
@ -270,7 +270,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
rWrite(0x08,c.value);
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(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;
@ -311,7 +311,7 @@ int DivPlatformPCE::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)))/12.0f)));
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
@ -398,10 +398,11 @@ void DivPlatformPCE::notifyInsDeletion(void* ins) {
void DivPlatformPCE::setPAL(bool pal) {
if (pal) { // technically there is no PAL PC Engine but oh well...
rate=1773448/6;
chipClock=COLOR_PAL*4.0/5.0;
} else {
rate=1789773/6;
chipClock=COLOR_NTSC;
}
rate=chipClock/12;
}
int DivPlatformPCE::init(DivEngine* p, int channels, int sugRate, bool pal) {