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fix software DAC sample rate being dependent on chip clock

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This commit is contained in:
LTVA1 2024-08-22 19:48:35 +03:00
parent f2ffd0e831
commit 36411defd2
1 changed files with 10 additions and 2 deletions
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12
src/engine/platform/sid3.cpp
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@ -111,7 +111,11 @@ void DivPlatformSID3::acquire(short** buf, size_t len)
int dacData=s->data16[chan[SID3_NUM_CHANNELS - 1].dacPos] + 32767;
chan[SID3_NUM_CHANNELS - 1].dacOut=CLAMP(dacData,0,65535);
updateSample = true;
sampleTick = 0;
if (sampleTick > 2)
{
sampleTick = 0;
}
chan[SID3_NUM_CHANNELS - 1].dacPos++;
if (s->isLoopable() && chan[SID3_NUM_CHANNELS - 1].dacPos>=(unsigned int)s->loopEnd)
@ -124,6 +128,10 @@ void DivPlatformSID3::acquire(short** buf, size_t len)
}
chan[SID3_NUM_CHANNELS - 1].dacPeriod-=rate;
}
while (chan[SID3_NUM_CHANNELS - 1].dacPeriod > rate)
{
chan[SID3_NUM_CHANNELS - 1].dacPeriod -= rate;
}
}
sampleTick++;
@ -711,7 +719,7 @@ void DivPlatformSID3::tick(bool sysTick)
off=(double)s->centerRate/8363.0;
}
}
chan[i].dacRate=chan[i].freq*(off / 32.0);
chan[i].dacRate=chan[i].freq*(off / 32.0)*(double)chipClock/1000000.0;
}
chan[i].noiseFreqChanged = true;