From 47497bfc2e0e7de52d160ba97c832fa59e205d3c Mon Sep 17 00:00:00 2001
From: Vojtech Moravec <vojtech.moravec.st@vsb.cz>
Date: Sat, 15 Feb 2020 13:17:58 +0100
Subject: [PATCH] Use only single copy call.
---
.../quantization/vector/LBGVectorQuantizer.java | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/main/java/azgracompress/quantization/vector/LBGVectorQuantizer.java b/src/main/java/azgracompress/quantization/vector/LBGVectorQuantizer.java
index 6ccf86e..283947c 100644
--- a/src/main/java/azgracompress/quantization/vector/LBGVectorQuantizer.java
+++ b/src/main/java/azgracompress/quantization/vector/LBGVectorQuantizer.java
@@ -21,15 +21,17 @@ public class LBGVectorQuantizer {
private double _mse = 0.0;
public LBGVectorQuantizer(final int[][] vectors, final int codebookSize, final int workerCount) {
-
assert (vectors.length > 0) : "No training vectors provided";
+ this.vectorSize = vectors[0].length;
+ final int[][] vectorsCopy = new int[vectors.length][vectorSize];
+ System.arraycopy(vectors, 0, vectorsCopy, 0, vectors.length);
+
this.trainingVectors = new TrainingVector[vectors.length];
- for (int i = 0; i < vectors.length; i++) {
- trainingVectors[i] = new TrainingVector(Arrays.copyOf(vectors[i], vectors[i].length));
+ for (int i = 0; i < vectorsCopy.length; i++) {
+ trainingVectors[i] = new TrainingVector(vectorsCopy[i]);
}
- this.vectorSize = vectors[0].length;
this.codebookSize = codebookSize;
this.workerCount = workerCount;
}
--
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