Java ByteBuffer to Int getUnsignedShort(ByteBuffer bytes)

Description

get Unsigned Short

License

Open Source License

Declaration

public static int getUnsignedShort(ByteBuffer bytes) throws IOException 

Method Source Code

//package com.java2s;
/*/*from w  ww .  j  a v  a  2s . com*/
Copyright 2011 Semantic Discovery, Inc. (www.semanticdiscovery.com)
    
This file is part of the Semantic Discovery Toolkit.
    
The Semantic Discovery Toolkit is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
The Semantic Discovery Toolkit 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 Lesser General Public License for more details.
    
You should have received a copy of the GNU Lesser General Public License
along with The Semantic Discovery Toolkit.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.nio.ByteBuffer;
import java.io.IOException;

public class Main {
    public static int getUnsignedShort(ByteBuffer bytes) throws IOException {
        if (bytes.remaining() < 2)
            throw new IOException("too few bytes specified for unsigned short value!");

        byte b1 = bytes.get();
        byte b2 = bytes.get();

        int value = (int) ((0xff & b1) << 8 | (0xff & b2));
        return value;
    }

    public static int getUnsignedShort(ByteBuffer bytes, int pos) throws IOException {
        if ((pos + 2) > bytes.limit())
            throw new IOException("too few bytes specified for unsigned short value!");

        byte b1 = bytes.get(pos);
        byte b2 = bytes.get(pos + 1);

        int value = (int) ((0xff & b1) << 8 | (0xff & b2));
        return value;
    }
}

Related

1. getUnsignedShort(ByteBuffer bb)
2. getUnsignedShort(ByteBuffer bb)
3. getUnsignedShort(ByteBuffer buf)
4. getUnsignedShort(ByteBuffer buffer)
5. getUnsignedShort(ByteBuffer buffer, int offset)
6. getUnsignedSmart(ByteBuffer buf)
7. getUnsignedSmartInt(ByteBuffer buffer)
8. getUnsignedVarInt(ByteBuffer buffer, int numBytes)
9. getUShort(ByteBuffer buffer)