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Fake VOICETYPE_PCM code

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raven02 2013-03-12 09:14:31 +08:00
parent 1cbc0deef6
commit 4b86fd7567
1 changed files with 28 additions and 1 deletions
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29
Core/HW/SasAudio.cpp
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@ -330,7 +330,34 @@ void SasInstance::Mix(u32 outAddr) {
}
}
else if (voice.type == VOICETYPE_PCM && voice.pcmAddr != 0) {
// PCM mixing should be easy, can share code with VAG
resampleBuffer[0] = voice.resampleHist[0];
resampleBuffer[1] = voice.resampleHist[1];
u32 numSamples = voice.sampleFrac + grainSize ;
if ((int)numSamples > grainSize * 4) {
ERROR_LOG(SAS, "numSamples too large, clamping: %i vs %i", numSamples, grainSize * 4);
numSamples = grainSize * 4;
}
resampleBuffer[2 + numSamples] = resampleBuffer[2 + numSamples - 1];
voice.resampleHist[0] = resampleBuffer[2 + numSamples - 2];
voice.resampleHist[1] = resampleBuffer[2 + numSamples - 1];
u32 sampleFrac = voice.sampleFrac;
for (int i = 0; i < grainSize; i++) {
int sample = resampleBuffer[sampleFrac + 2];
int envelopeValue = voice.envelope.GetHeight();
envelopeValue = ((envelopeValue >> 15) + 1) >> 1;
sample = sample * envelopeValue >> 15;
mixBuffer[i * 2] += sample * voice.volumeLeft >> 15;
mixBuffer[i * 2 + 1] += sample * voice.volumeRight >> 15;
sendBuffer[i * 2] += sample * voice.volumeLeftSend >> 15;
sendBuffer[i * 2 + 1] += sample * voice.volumeRightSend >> 15;
voice.envelope.Step();
}
voice.sampleFrac = sampleFrac;
voice.sampleFrac -= numSamples ;
if (voice.envelope.HasEnded()) {
NOTICE_LOG(SAS, "Hit end of envelope");
voice.playing = false;
}
}
else if (voice.type == VOICETYPE_NOISE && voice.noiseFreq != 0) {
// Generate noise?