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#1826 SIMD-512 Systems Fail When Decoding MPT1327 #1832

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Merged
merged 1 commit into from
Feb 9, 2024
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#1826 SIMD-512 Systems Fail When Decoding MPT1327 #1832

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16 changes: 13 additions & 3 deletions src/main/java/io/github/dsheirer/dsp/oscillator/VectorRealOscillator.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/*
* *****************************************************************************
* Copyright (C) 2014-2022 Dennis Sheirer
* Copyright (C) 2014-2024 Dennis Sheirer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
Expand All @@ -19,6 +19,7 @@

package io.github.dsheirer.dsp.oscillator;

import java.util.Arrays;
import jdk.incubator.vector.FloatVector;
import jdk.incubator.vector.VectorOperators;
import jdk.incubator.vector.VectorSpecies;
Expand All @@ -45,7 +46,15 @@ public VectorRealOscillator(double frequency, double sampleRate)
@Override
public float[] generate(int sampleCount)
{
float[] samples = new float[sampleCount];
int length = sampleCount;

//Increase the length until it aligns as a multiple of the vector species length
while(length % VECTOR_SPECIES.length() != 0)
{
length++;
}

float[] samples = new float[length];

for(int samplePointer = 0; samplePointer < sampleCount; samplePointer += VECTOR_SPECIES.length())
{
Expand All @@ -58,6 +67,7 @@ public float[] generate(int sampleCount)
generated.intoArray(samples, samplePointer);
}

return samples;
//Truncate the array to the requested length, if we increased it for SIMD alignment.
return Arrays.copyOf(samples, sampleCount);
}
}