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OPL and OPLL vol map

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This commit is contained in:
tildearrow 2023-12-17 14:54:38 -05:00
parent 8d30ac4d3b
commit 0208883fa1
6 changed files with 26 additions and 2 deletions
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15
src/engine/platform/opl.cpp
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@ -2104,6 +2104,21 @@ DivDispatchOscBuffer* DivPlatformOPL::getOscBuffer(int ch) {
return oscBuf[ch];
}
int DivPlatformOPL::mapVelocity(int ch, float vel) {
if (ch==adpcmChan) return vel*255.0;
// -0.75dB per step
// -6: 64: 8
// -12: 32: 16
// -18: 16: 24
// -24: 8: 32
// -30: 4: 40
// -36: 2: 48
// -42: 1: 56
if (vel==0) return 0;
if (vel>=1.0) return 63;
return CLAMP(round(64.0-(56.0-log2(vel*127.0)*8.0)),0,63);
}
unsigned char* DivPlatformOPL::getRegisterPool() {
return regPool;
}