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ES5506: add a volume scale parameter

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This commit is contained in:
tildearrow 2023-02-12 02:11:03 -05:00
parent 30ce6e9ed7
commit e2e0afd18a
3 changed files with 21 additions and 3 deletions
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12
src/engine/platform/es5506.cpp
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@ -385,13 +385,19 @@ void DivPlatformES5506::tick(bool sysTick) {
if (chan[i].volChanged.changed) {
// calculate volume (16 bit)
if (chan[i].volChanged.lVol) {
chan[i].resLVol=VOL_SCALE_LOG(chan[i].outVol,chan[i].outLVol,0xfff)<<4;
chan[i].resLVol=VOL_SCALE_LOG(chan[i].outVol,chan[i].outLVol,0xfff);
chan[i].resLVol-=volScale;
if (chan[i].resLVol<0) chan[i].resLVol=0;
chan[i].resLVol<<=4;
if (!chan[i].keyOn && chan[i].active) {
pageWrite(0x00|i,0x02,chan[i].resLVol);
}
}
if (chan[i].volChanged.rVol) {
chan[i].resRVol=VOL_SCALE_LOG(chan[i].outVol,chan[i].outRVol,0xfff)<<4;
chan[i].resRVol=VOL_SCALE_LOG(chan[i].outVol,chan[i].outRVol,0xfff);
chan[i].resRVol-=volScale;
if (chan[i].resRVol<0) chan[i].resRVol=0;
chan[i].resRVol<<=4;
if (!chan[i].keyOn && chan[i].active) {
pageWrite(0x00|i,0x04,chan[i].resRVol);
}
@ -1152,6 +1158,7 @@ void DivPlatformES5506::setFlags(const DivConfig& flags) {
CHECK_CUSTOM_CLOCK;
initChanMax=MAX(4,flags.getInt("channels",0x1f)&0x1f);
volScale=4095-flags.getInt("volScale",4095);
chanMax=initChanMax;
pageWriteMask(0x00,0x60,0x0b,chanMax);
@ -1251,6 +1258,7 @@ int DivPlatformES5506::init(DivEngine* p, int channels, int sugRate, const DivCo
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
volScale=0;
for (int i=0; i<32; i++) {
isMuted[i]=false;