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QuadTone: fix PCM muting

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This commit is contained in:
tildearrow 2023-04-09 13:44:47 -05:00
parent 8dfe0bc021
commit 7a137fcdd1
1 changed files with 20 additions and 3 deletions
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23
src/engine/platform/zxbeeperquadtone.cpp
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@ -32,11 +32,11 @@ const char** DivPlatformZXBeeperQuadTone::getRegisterSheet() {
void DivPlatformZXBeeperQuadTone::acquire(short** buf, size_t len) {
bool o=false;
for (size_t h=0; h<len; h++) {
if (curSample>=0 && curSample<parent->song.sampleLen) {
if (curSample>=0 && curSample<parent->song.sampleLen && !isMuted[4]) {
while (curSamplePeriod>=chan[4].freq) {
DivSample* s=parent->getSample(curSample);
if (s->samples>0) {
o=(!isMuted[4]&&s->data8[curSamplePos++]>0);
if (!isMuted[4]) o=(s->data8[curSamplePos++]>0);
if (curSamplePos>=s->samples) curSample=-1;
// (theoretical) 32KiB limit
if (curSamplePos>=32768*8) curSample=-1;
@ -59,6 +59,7 @@ void DivPlatformZXBeeperQuadTone::acquire(short** buf, size_t len) {
if ((outputClock&1)==0) {
chan[ch].sPosition+=(regPool[1+b]<<8)|regPool[0+b];
chan[ch].out=regPool[3+b]+((((chan[ch].sPosition>>8)&0xff)<regPool[2+b])?1:0);
if (isMuted[ch]) chan[ch].out=0;
}
if ((outputClock&3)==0) {
oscBuf[4]->data[oscBuf[4]->needle++]=0;
@ -66,6 +67,22 @@ void DivPlatformZXBeeperQuadTone::acquire(short** buf, size_t len) {
o=chan[ch].out&0x10;
oscBuf[ch]->data[oscBuf[ch]->needle++]=o?32767:0;
chan[ch].out<<=1;
// if muted, ztill run sample
if (curSample>=0 && curSample<parent->song.sampleLen && isMuted[4]) {
while (curSamplePeriod>=chan[4].freq) {
DivSample* s=parent->getSample(curSample);
if (s->samples>0) {
if (curSamplePos>=s->samples) curSample=-1;
// (theoretical) 32KiB limit
if (curSamplePos>=32768*8) curSample=-1;
} else {
curSample=-1;
}
curSamplePeriod-=chan[4].freq;
}
curSamplePeriod+=40;
}
}
outputClock=(outputClock+1)&7;
buf[0][h]=o?32767:0;
@ -283,7 +300,7 @@ int DivPlatformZXBeeperQuadTone::dispatch(DivCommand c) {
void DivPlatformZXBeeperQuadTone::writeOutVol(int ch) {
if (ch>=4) return;
unsigned char val=(chan[ch].outVol>=1)?((chan[ch].outVol>=2)?31:7):0;
rWrite(3+ch*4,(!isMuted[ch]&&chan[ch].active)?val:0);
rWrite(3+ch*4,(chan[ch].active)?val:0);
}
void DivPlatformZXBeeperQuadTone::muteChannel(int ch, bool mute) {