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OPL4: fix 12-bit related glitches

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This commit is contained in:
tildearrow 2025-04-02 19:18:33 -05:00
parent c3f98e50d3
commit 05f2c99bb4
2 changed files with 14 additions and 8 deletions
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6
src/engine/sample.cpp
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@ -619,8 +619,8 @@ bool DivSample::initInternal(DivSampleDepth d, int count) {
case DIV_SAMPLE_DEPTH_12BIT: // 12-bit PCM (MultiPCM)
if (data12!=NULL) delete[] data12;
length12=((count*3)+1)/2;
data12=new unsigned char[length12];
memset(data12,0,length12);
data12=new unsigned char[length12+8];
memset(data12,0,length12+8);
break;
case DIV_SAMPLE_DEPTH_16BIT: // 16-bit
if (data16!=NULL) delete[] data16;
@ -1513,6 +1513,8 @@ void DivSample::render(unsigned int formatMask) {
data12[j+1]=((data16[i+0]>>4)&0xf)|(i+1<samples?(data16[i+1]>>4)&0xf:0);
if (i+1<samples) {
data12[j+2]=data16[i+1]>>8;
} else {
data12[j+2]=0;
}
}
}