/*
* This file is part of the LIRE project: http://www.semanticmetadata.net/lire
* LIRE is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* LIRE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LIRE; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* We kindly ask you to refer the any or one of the following publications in
* any publication mentioning or employing Lire:
*
* Lux Mathias, Savvas A. Chatzichristofis. Lire: Lucene Image Retrieval –
* An Extensible Java CBIR Library. In proceedings of the 16th ACM International
* Conference on Multimedia, pp. 1085-1088, Vancouver, Canada, 2008
* URL: http://doi.acm.org/10.1145/1459359.1459577
*
* Lux Mathias. Content Based Image Retrieval with LIRE. In proceedings of the
* 19th ACM International Conference on Multimedia, pp. 735-738, Scottsdale,
* Arizona, USA, 2011
* URL: http://dl.acm.org/citation.cfm?id=2072432
*
* Mathias Lux, Oge Marques. Visual Information Retrieval using Java and LIRE
* Morgan & Claypool, 2013
* URL: http://www.morganclaypool.com/doi/abs/10.2200/S00468ED1V01Y201301ICR025
*
* Copyright statement:
* --------------------
* (c) 2002-2013 by Mathias Lux (mathias@juggle.at)
* http://www.semanticmetadata.net/lire, http://www.lire-project.net
*/
package net.semanticmetadata.lire.utils;
import junit.framework.TestCase;
import net.semanticmetadata.lire.clustering.Cluster;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
/**
* Date: 28.09.2010
* Time: 12:45:27
* Mathias Lux, mathias@juggle.at
*/
public class SerializationUtilsTest extends TestCase {
/**
* Test some basic serialization routines ...
*/
public void testSerialization() {
{
// --- floats
float[] test = new float[100];
for (int i = 0; i < test.length; i++) {
test[i] = (float) (Math.random() * 1000);
}
byte[] bytes = SerializationUtils.toByteArray(test);
float[] floats = SerializationUtils.toFloatArray(bytes);
for (int i = 0; i < floats.length; i++) {
assertEquals(floats[i], test[i]);
}
}
{
// --- doubles
double[] test = new double[100];
for (int i = 0; i < test.length; i++) {
test[i] = (Math.random() * 1000);
}
byte[] bytes = SerializationUtils.toByteArray(test);
double[] floats = SerializationUtils.toDoubleArray(bytes);
for (int i = 0; i < floats.length; i++) {
// need to cast to floats due to the loss in precision in conversion.
assertEquals(floats[i], test[i]);
}
}
}
public void testLongSerialization() {
double[] test = new double[100];
for (int i = 0; i < test.length; i++) {
test[i] = (Math.random() * 1000);
long l = Double.doubleToRawLongBits(test[i]);
assertEquals(SerializationUtils.toLong(SerializationUtils.toBytes(l)), l);
}
}
/**
* Test serialization of Clusters ...
*/
public void testClusterSerialization() throws IOException {
Cluster[] tc = new Cluster[12];
for (int i = 0; i < tc.length; i++) {
double[] test = new double[128];
for (int j = 0; j < test.length; j++) {
test[j] = (Math.random() * 1000);
}
tc[i] = new Cluster(test);
}
Cluster.writeClusters(tc, "test-tmp.dat");
Cluster[] clusters = Cluster.readClusters("test-tmp.dat");
for (int i = 0; i < clusters.length; i++) {
System.out.println(clusters[i].toString().equals(tc[i].toString()));
}
}
public void testByteCompression() {
for (int j = 0; j<10000; j++) {
byte[] test = new byte[6];
for (int i = 0; i < test.length; i++) {
test[i] = (byte) Math.floor(Math.random()*16);
// System.out.println(i + " = " + test[i]);
}
int tmp = test[0];
tmp = tmp << 5 | test[1];
tmp = tmp << 5 | test[2];
tmp = tmp << 5 | test[3];
tmp = tmp << 5 | test[4];
tmp = tmp << 5 | test[5];
int bitmask = 0x000F;
assertTrue((tmp & bitmask) == (int) test[5]);
assertTrue((tmp >> 5 & bitmask) == (int) test[4]);
assertTrue((tmp >> 10 & bitmask) == (int) test[3]);
assertTrue((tmp >> 15 & bitmask) == (int) test[2]);
assertTrue((tmp >> 20 & bitmask) == (int) test[1]);
assertTrue((tmp >> 25 & bitmask) == (int) test[0]);
}
}
public void testReadCodeBook() throws IOException {
List<double[]> doubles = SerializationUtils.readCodeBook(new FileInputStream("codebookSCD128.txt"));
for (Iterator<double[]> iterator = doubles.iterator(); iterator.hasNext(); ) {
double[] next = iterator.next();
//System.out.println(Arrays.toString(next));
}
SerializationUtils.writeCodeBook(System.out, doubles);
}
}