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OPN: fix wrong getGain in ExtCh

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tildearrow 2025-09-16 03:05:27 -05:00
parent 0f408310f1
commit 70f512003e
1 changed files with 7 additions and 0 deletions
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7
src/engine/platform/fmshared_OPN.h
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@ -214,6 +214,13 @@ class DivPlatformOPN: public DivPlatformFMBase {
return DivPlatformFMBase::mapVelocity(ch,vel); return DivPlatformFMBase::mapVelocity(ch,vel);
} }
virtual float getGain(int ch, int vol) { virtual float getGain(int ch, int vol) {
if (extSys) {
if (ch>=extChanOffs+4) {
ch-=4;
} else if (ch>=extChanOffs) {
ch=extChanOffs;
}
}
if (vol==0) return 0; if (vol==0) return 0;
if (ch==csmChan) return 1; if (ch==csmChan) return 1;
if (ch==adpcmBChanOffs) return (float)vol/255.0; if (ch==adpcmBChanOffs) return (float)vol/255.0;