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Virtual Boy: clean-up

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tildearrow 2022-10-09 15:18:41 -05:00
parent 691a7eeea7
commit 744f897e4f
2 changed files with 12 additions and 169 deletions
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167
src/engine/platform/vb.cpp
View file

@ -93,46 +93,11 @@ const char** DivPlatformVB::getRegisterSheet() {
void DivPlatformVB::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
// PCM part
/*
for (int i=0; i<6; i++) {
if (chan[i].pcm && chan[i].dacSample!=-1) {
chan[i].dacPeriod+=chan[i].dacRate;
if (chan[i].dacPeriod>rate) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (s->samples<=0) {
chan[i].dacSample=-1;
continue;
}
chWrite(i,0x07,0);
signed char dacData=((signed char)((unsigned char)s->data8[chan[i].dacPos]^0x80))>>3;
chan[i].dacOut=CLAMP(dacData,-16,15);
if (!isMuted[i]) {
chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].outVol));
chWrite(i,0x06,chan[i].dacOut&0x1f);
} else {
chWrite(i,0x04,0xc0);
chWrite(i,0x06,0x10);
}
chan[i].dacPos++;
if (s->isLoopable() && chan[i].dacPos>=(unsigned int)s->loopEnd) {
chan[i].dacPos=s->loopStart;
} else if (chan[i].dacPos>=s->samples) {
chan[i].dacSample=-1;
}
chan[i].dacPeriod-=rate;
}
}
}
*/
// VB part
cycles=0;
while (!writes.empty()) {
QueuedWrite w=writes.front();
vb->Write(cycles,w.addr,w.val);
regPool[w.addr]=w.val;
//cycles+=2;
regPool[w.addr>>2]=w.val;
writes.pop();
}
vb->EndFrame(16);
@ -158,10 +123,6 @@ void DivPlatformVB::acquire(short* bufL, short* bufR, size_t start, size_t len)
void DivPlatformVB::updateWave(int ch) {
if (ch>=5) return;
if (chan[ch].pcm) {
chan[ch].deferredWaveUpdate=true;
return;
}
for (int i=0; i<32; i++) {
rWrite((ch<<7)+(i<<2),chan[ch].ws.output[i]);
//chWrite(ch,0x06,chan[ch].ws.output[(i+chan[ch].antiClickWavePos)&31]);
@ -175,11 +136,6 @@ void DivPlatformVB::updateWave(int ch) {
}
}
// TODO: in octave 6 the noise table changes to a tonal one
static unsigned char noiseFreq[12]={
4,13,15,18,21,23,25,27,29,31,0,2
};
void DivPlatformVB::tick(bool sysTick) {
for (int i=0; i<6; i++) {
// anti-click
@ -192,29 +148,15 @@ void DivPlatformVB::tick(bool sysTick) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LINEAR(chan[i].vol&15,MIN(15,chan[i].std.vol.val),15);
if (chan[i].furnaceDac && chan[i].pcm) {
// ignore for now
} else {
chWrite(i,0x04,chan[i].outVol<<4);
}
}
if (chan[i].std.duty.had && i>=4) {
chan[i].noise=chan[i].std.duty.val;
chan[i].freqChanged=true;
int noiseSeek=chan[i].note;
if (noiseSeek<0) noiseSeek=0;
chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
chWrite(i,0x04,chan[i].outVol<<4);
}
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
int noiseSeek=parent->calcArp(chan[i].note,chan[i].std.arp.val);
chan[i].baseFreq=NOTE_PERIODIC(noiseSeek);
if (noiseSeek<0) noiseSeek=0;
chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val));
}
chan[i].freqChanged=true;
}
if (chan[i].std.wave.had && !chan[i].pcm) {
if (chan[i].std.wave.had) {
if (chan[i].wave!=chan[i].std.wave.val || chan[i].ws.activeChanged()) {
chan[i].wave=chan[i].std.wave.val;
chan[i].ws.changeWave1(chan[i].wave);
@ -242,15 +184,6 @@ void DivPlatformVB::tick(bool sysTick) {
chan[i].freqChanged=true;
}
if (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1) {
if (chan[i].furnaceDac && chan[i].pcm) {
if (chan[i].active && chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
chan[i].dacPos=0;
chan[i].dacPeriod=0;
//chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].vol));
addWrite(0xffff0000+(i<<8),chan[i].dacSample);
chan[i].keyOn=true;
}
}
chan[i].antiClickWavePos=0;
chan[i].antiClickPeriodCount=0;
}
@ -260,21 +193,7 @@ void DivPlatformVB::tick(bool sysTick) {
}
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
if (chan[i].furnaceDac && chan[i].pcm) {
double off=1.0;
if (chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (s->centerRate<1) {
off=1.0;
} else {
off=8363.0/(double)s->centerRate;
}
}
chan[i].dacRate=((double)chipClock/2)/MAX(1,off*chan[i].freq);
if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dacRate);
}
if (chan[i].freq<1) chan[i].freq=1;
if (chan[i].freq>2047) chan[i].freq=2047;
chan[i].freq=2048-chan[i].freq;
@ -296,64 +215,6 @@ int DivPlatformVB::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_PCE);
chan[c.chan].macroVolMul=ins->type==DIV_INS_AMIGA?64:31;
if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
chan[c.chan].pcm=true;
} else if (chan[c.chan].furnaceDac) {
chan[c.chan].pcm=false;
}
if (chan[c.chan].pcm) {
if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
chan[c.chan].furnaceDac=true;
if (skipRegisterWrites) break;
chan[c.chan].dacSample=ins->amiga.getSample(c.value);
if (chan[c.chan].dacSample<0 || chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
break;
} else {
if (dumpWrites) {
//chWrite(c.chan,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
}
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
//chan[c.chan].keyOn=true;
} else {
chan[c.chan].furnaceDac=false;
if (skipRegisterWrites) break;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
}
chan[c.chan].dacSample=12*sampleBank+chan[c.chan].note%12;
if (chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
break;
} else {
if (dumpWrites) addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
chan[c.chan].dacRate=parent->getSample(chan[c.chan].dacSample)->rate;
if (dumpWrites) {
//chWrite(c.chan,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
addWrite(0xffff0001+(c.chan<<8),chan[c.chan].dacRate);
}
}
break;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
@ -364,6 +225,7 @@ int DivPlatformVB::dispatch(DivCommand c) {
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
chWrite(c.chan,0x04,chan[c.chan].outVol<<4);
}
if (chan[c.chan].wave<0) {
chan[c.chan].wave=0;
@ -376,7 +238,6 @@ int DivPlatformVB::dispatch(DivCommand c) {
case DIV_CMD_NOTE_OFF:
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
chan[c.chan].pcm=false;
chan[c.chan].active=false;
chan[c.chan].keyOff=true;
chan[c.chan].macroInit(NULL);
@ -396,7 +257,7 @@ int DivPlatformVB::dispatch(DivCommand c) {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
if (chan[c.chan].active && !chan[c.chan].pcm) {
if (chan[c.chan].active) {
chWrite(c.chan,0x04,chan[c.chan].outVol<<4);
}
}
@ -458,15 +319,6 @@ int DivPlatformVB::dispatch(DivCommand c) {
chan[c.chan].noise=c.value;
chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|chan[c.chan].note):0);
break;
case DIV_CMD_SAMPLE_MODE:
chan[c.chan].pcm=c.value;
break;
case DIV_CMD_SAMPLE_BANK:
sampleBank=c.value;
if (sampleBank>(parent->song.sample.size()/12)) {
sampleBank=parent->song.sample.size()/12;
}
break;
case DIV_CMD_PANNING: {
chan[c.chan].pan=(c.value&0xf0)|(c.value2>>4);
chWrite(c.chan,0x01,isMuted[c.chan]?0:chan[c.chan].pan);
@ -499,10 +351,6 @@ int DivPlatformVB::dispatch(DivCommand c) {
void DivPlatformVB::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
chWrite(ch,0x01,isMuted[ch]?0:chan[ch].pan);
if (!isMuted[ch] && (chan[ch].pcm && chan[ch].dacSample!=-1)) {
//chWrite(ch,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[ch].outVol));
//chWrite(ch,0x06,chan[ch].dacOut&0x1f);
}
}
void DivPlatformVB::forceIns() {
@ -531,7 +379,7 @@ unsigned char* DivPlatformVB::getRegisterPool() {
}
int DivPlatformVB::getRegisterPoolSize() {
return 0x600;
return 0x180;
}
int DivPlatformVB::getRegisterPoolDepth() {
@ -556,7 +404,6 @@ void DivPlatformVB::reset() {
tempR=0;
cycles=0;
curChan=-1;
sampleBank=0;
lfoMode=0;
lfoSpeed=255;
// set per-channel initial values

14
src/engine/platform/vb.h
View file

@ -33,9 +33,8 @@ class DivPlatformVB: public DivDispatch {
unsigned int dacPos;
int dacSample, ins;
unsigned char pan;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, noise, pcm, furnaceDac, deferredWaveUpdate;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, noise, deferredWaveUpdate;
signed char vol, outVol, wave;
int macroVolMul;
DivMacroInt std;
DivWaveSynth ws;
void macroInit(DivInstrument* which) {
@ -64,13 +63,10 @@ class DivPlatformVB: public DivDispatch {
keyOff(false),
inPorta(false),
noise(false),
pcm(false),
furnaceDac(false),
deferredWaveUpdate(false),
vol(31),
outVol(31),
wave(-1),
macroVolMul(31) {}
vol(15),
outVol(15),
wave(-1) {}
};
Channel chan[6];
DivDispatchOscBuffer* oscBuf[6];
@ -87,7 +83,7 @@ class DivPlatformVB: public DivDispatch {
int cycles, curChan, delay;
int tempL;
int tempR;
unsigned char sampleBank, lfoMode, lfoSpeed;
unsigned char lfoMode, lfoSpeed;
VSU* vb;
unsigned char regPool[0x600];
void updateWave(int ch);