Java ByteBuffer Get getModularShort(ByteBuffer bb)

Description

Read a int value (the size of a modular short) from a ByteBuffer

License

Open Source License

Parameter

Parameter	Description
bb	Data given as a ByteBuffer

Return

int Size of the modular short

Declaration

public static int getModularShort(ByteBuffer bb) 

Method Source Code

//package com.java2s;
/*//from   w  w  w.  j av  a2  s.c o m
 * JGrass - Free Open Source Java GIS http://www.jgrass.org 
 * (C) HydroloGIS - www.hydrologis.com 
 * 
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Library General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option) any
 * later version.
 * 
 * This library 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 Library General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Library General Public License
 * along with this library; if not, write to the Free Foundation, Inc., 59
 * Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Vector;

public class Main {
    /**
     * Read a int value (the size of a modular short) from a ByteBuffer
     * 
     * @param bb Data given as a ByteBuffer
     * @return int Size of the modular short
     */
    public static int getModularShort(ByteBuffer bb) {
        Vector shorts = new Vector();
        bb.order(ByteOrder.BIG_ENDIAN);
        short shortt = bb.getShort();
        int size = 0;
        while ((shortt & 0x80) > 0) {
            shorts.add(new Short(shortt));
            shortt = bb.getShort();
        }
        shorts.add(new Short(shortt));
        for (int i = 0; i < shorts.size(); i++) {
            shortt = ((Short) shorts.get(i)).shortValue();
            shorts.set(i, new Integer(((shortt & 0xff00) >> 8)
                    | ((shortt & 0xff) << 8)));
        }
        int slen = shorts.size();
        if (slen == 1) {
            size = (((Integer) shorts.get(0)).intValue()) & 0x7fff;//(new Integer(((Integer)shorts.get(0)).shortValue() & 0x7fff)).byteValue();
        } else if (slen == 2) {
            int tmp = ((Integer) shorts.get(0)).intValue();
            shorts.set(0, shorts.get(1));
            shorts.set(1, new Integer(tmp));
            size = (((((Integer) shorts.get(0)).intValue()) & 0x7fff) << 15)
                    | (((((Integer) shorts.get(1)).intValue()) & 0x7fff));//(new Integer(((Integer)shorts.get(0)).shortValue() & 0x7fff)).byteValue();
        } else {
            System.out.println("Unexpected array length: " + slen);
        }
        return size;
    }
}

Related

1. getListFromByteBuffer(ByteBuffer data, List classes)
2. getLTriad(ByteBuffer bb)
3. getMean(ByteBuffer simulationResults)
4. getMedium(ByteBuffer buffer)
5. getMediumInt(ByteBuffer buffer)
6. getMultiString(ByteBuffer bb, boolean wideChar)
7. getNaluStartLength(ByteBuffer buffer)
8. getNextTagNum(ByteBuffer message)
9. getNTString(ByteBuffer buffer)