/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
module dwt.internal.image;

 
import dwt.DWT;

abstract class JPEGFixedSizeSegment : JPEGSegment {

    public JPEGFixedSizeSegment() {
        reference = new byte[fixedSize()];
        setSegmentMarker(signature());
    }
    
    public JPEGFixedSizeSegment(byte[] reference) {
        super(reference);
    }
    
    public JPEGFixedSizeSegment(LEDataInputStream byteStream) {
        reference = new byte[fixedSize()];
        try {
            byteStream.read(reference);
        } catch (Exception e) { 
            DWT.error(DWT.ERROR_IO, e);
        }
    }
    
    abstract public int fixedSize();

    public int getSegmentLength() {
        return fixedSize() - 2;
    }
    
    public void setSegmentLength(int length) {
    }
}