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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2003 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 *******************************************************************************/
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11 module dwt.internal.image.JPEGFixedSizeSegment;
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12
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13
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14 import dwt.SWT;
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15 import dwt.internal.image.JPEGSegment;
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16 import dwt.internal.image.LEDataInputStream;
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17
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18 import tango.core.Exception;
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19
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20
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21 abstract class JPEGFixedSizeSegment : JPEGSegment {
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22
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23 public this() {
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24 reference = new byte[fixedSize()];
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25 setSegmentMarker(signature());
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26 }
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27
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28 public this(byte[] reference) {
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29 super(reference);
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30 }
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31
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32 public this(LEDataInputStream byteStream) {
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33 reference = new byte[fixedSize()];
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34 try {
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35 byteStream.read(reference);
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36 } catch (TracedException e) {
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37 SWT.error(SWT.ERROR_IO, e);
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38 }
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39 }
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40
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41 abstract public int fixedSize();
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42
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43 public int getSegmentLength() {
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44 return fixedSize() - 2;
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45 }
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46
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47 public void setSegmentLength(int length) {
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48 }
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49 }
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