Here you can find the source of toFloatArray(byte[] data)
| Parameter | Description |
|---|---|
| data | a parameter |
public static float[] toFloatArray(byte[] data)
//package com.java2s; /*//from w ww. j a v a2 s.co m * 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 following paper in any publication mentioning 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 * * http://doi.acm.org/10.1145/1459359.1459577 * * Copyright statement: * -------------------- * (c) 2002-2011 by Mathias Lux (mathias@juggle.at) * http://www.semanticmetadata.net/lire */ public class Main { /** * Convenience method for creating a float array from a byte array. * * @param data * @return */ public static float[] toFloatArray(byte[] data) { float[] result = new float[data.length / 4]; byte[] tmp = new byte[4]; for (int i = 0; i < result.length; i++) { System.arraycopy(data, i * 4, tmp, 0, 4); result[i] = toFloat(tmp); } return result; } /** * Convenience method for creating a float array from a byte array. * * @param in * @param offset * @param length * @return */ public static float[] toFloatArray(byte[] in, int offset, int length) { float[] result = new float[length / 4]; byte[] tmp = new byte[4]; for (int i = offset; i < length / 4; i++) { System.arraycopy(in, (i - offset) * 4 + offset, tmp, 0, 4); result[i] = toFloat(tmp); } return result; } /** * Converts a byte array with 4 elements to a float. Used to put floats into a byte[] payload in a convenient * and fast way by shifting without using streams (which is kind of slow). Use * {@link net.semanticmetadata.lire.utils.SerializationUtils#toBytes(float)} to encode. * * @param data the input byte array * @return the resulting float * @see net.semanticmetadata.lire.utils.SerializationUtils#toBytes(float) */ public static float toFloat(byte[] data) { return Float.intBitsToFloat(toInt(data)); } /** * Converts a byte array with 4 elements to an int. Used to put ints into a byte[] payload in a convenient * and fast way by shifting without using streams (which is kind of slow). <br/> * Taken from http://www.daniweb.com/code/snippet216874.html * * @param data the input byte array * @return the resulting int * @see net.semanticmetadata.lire.utils.SerializationUtils#toBytes(int) */ public static int toInt(byte[] data) { if (data == null || data.length != 4) return 0x0; return (int) ( // NOTE: type cast not necessary for int (0xff & data[0]) << 24 | (0xff & data[1]) << 16 | (0xff & data[2]) << 8 | (0xff & data[3]) << 0); } }