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implement getGain for a couple chips

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the ones with log volume
This commit is contained in:
tildearrow 2024-07-22 19:08:39 -05:00
parent b108156954
commit b2223ccd0f
17 changed files with 65 additions and 1 deletions
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13
src/engine/platform/fmshared_OPN.h
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@ -198,6 +198,19 @@ class DivPlatformOPN: public DivPlatformFMBase {
if (ch>=psgChanOffs) return round(15.0*pow(vel,0.33));
return DivPlatformFMBase::mapVelocity(ch,vel);
}
virtual float getGain(int ch, int vol) {
if (vol==0) return 0;
if (ch==csmChan) return 1;
if (ch==adpcmBChanOffs) return (float)vol/255.0;
if (ch>=adpcmAChanOffs) {
return 1.0/pow(10.0,(float)(31-vol)*0.75/20.0);
}
if (ch>=psgChanOffs) {
return 1.0/pow(10.0,(float)(15-vol)*1.5/20.0);
}
return DivPlatformFMBase::getGain(ch,vol);
}
};
#endif