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Java > Open Source Codes > org > eclipse > swt > internal > image > JPEGFixedSizeSegment


1 /*******************************************************************************
2  * Copyright (c) 2000, 2003 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.swt.internal.image;
12
13  
14 import org.eclipse.swt.*;
15
16 abstract class JPEGFixedSizeSegment extends JPEGSegment {
17
18     public JPEGFixedSizeSegment() {
19         reference = new byte[fixedSize()];
20         setSegmentMarker(signature());
21     }
22     
23     public JPEGFixedSizeSegment(byte[] reference) {
24         super(reference);
25     }
26     
27     public JPEGFixedSizeSegment(LEDataInputStream byteStream) {
28         reference = new byte[fixedSize()];
29         try {
30             byteStream.read(reference);
31         } catch (Exception JavaDoc e) {
32             SWT.error(SWT.ERROR_IO, e);
33         }
34     }
35     
36     abstract public int fixedSize();
37
38     public int getSegmentLength() {
39         return fixedSize() - 2;
40     }
41     
42     public void setSegmentLength(int length) {
43     }
44 }
45
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