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prevent crash when playing empty sample

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fixes #62
This commit is contained in:
tildearrow 2022-01-24 15:47:39 -05:00
parent c8eeac4f63
commit bd8c06bbb7
5 changed files with 58 additions and 34 deletions
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28
src/engine/platform/genesis.cpp
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@ -18,21 +18,25 @@ void DivPlatformGenesis::acquire(short* bufL, short* bufR, size_t start, size_t
dacPeriod-=6;
if (dacPeriod<1) {
DivSample* s=parent->song.sample[dacSample];
if (!isMuted[5]) {
if (s->depth==8) {
immWrite(0x2a,(unsigned char)s->rendData[dacPos++]+0x80);
} else {
immWrite(0x2a,((unsigned short)s->rendData[dacPos++]+0x8000)>>8);
if (s->rendLength>0) {
if (!isMuted[5]) {
if (s->depth==8) {
immWrite(0x2a,(unsigned char)s->rendData[dacPos++]+0x80);
} else {
immWrite(0x2a,((unsigned short)s->rendData[dacPos++]+0x8000)>>8);
}
}
}
if (dacPos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
dacPos=s->loopStart;
} else {
dacSample=-1;
if (dacPos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
dacPos=s->loopStart;
} else {
dacSample=-1;
}
}
dacPeriod+=MAX(40,dacRate);
} else {
dacSample=-1;
}
dacPeriod+=MAX(40,dacRate);
}
}