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YM2612: fix negative octaves

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tildearrow 2022-04-24 22:45:59 -05:00
parent 52e35fdf04
commit c84ff399d9
3 changed files with 16 additions and 1 deletions
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11
src/engine/engine.cpp
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@ -887,6 +887,17 @@ double DivEngine::calcBaseFreq(double clock, double divider, int note, bool peri
base*(divider/clock);
}
unsigned short DivEngine::calcBaseFreqFNumBlock(double clock, double divider, int note, int bits) {
int bf=calcBaseFreq(clock,divider,note,false);
int block=note/12;
if (block<0) block=0;
if (block>7) block=7;
bf>>=block;
if (bf<0) bf=0;
if (bf>((1<<bits)-1)) bf=(1<<bits)-1;
return bf|(block<<bits);
}
int DivEngine::calcFreq(int base, int pitch, bool period, int octave) {
if (song.linearPitch) {
// global pitch multiplier