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annotate dwt/internal/image/JPEGSegment.d @ 34:5123b17c98ef

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Ported dwt.events.*, dwt.graphics.GC, Region, dwt.internal.image.*
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sun, 14 Sep 2008 01:45:57 +0200
parents e831403a80a9
children
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5123b17c98ef Ported dwt.events.*, dwt.graphics.GC, Region, dwt.internal.image.*
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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 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwt.internal.image.JPEGSegment;
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15 import dwt.internal.image.LEDataOutputStream;
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17 import tango.core.Exception;
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19 class JPEGSegment {
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20 public byte[] reference;
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22 this() {
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23 }
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25 public this(byte[] reference) {
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26 this.reference = reference;
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27 }
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29 public int signature() {
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30 return 0;
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31 }
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33 public bool verify() {
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34 return getSegmentMarker() is signature();
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35 }
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37 public int getSegmentMarker() {
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38 return ((reference[0] & 0xFF) << 8 | (reference[1] & 0xFF));
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39 }
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41 public void setSegmentMarker(int marker) {
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42 reference[0] = cast(byte)((marker & 0xFF00) >> 8);
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43 reference[1] = cast(byte)(marker & 0xFF);
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44 }
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46 public int getSegmentLength() {
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47 return ((reference[2] & 0xFF) << 8 | (reference[3] & 0xFF));
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48 }
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50 public void setSegmentLength(int length) {
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51 reference[2] = cast(byte)((length & 0xFF00) >> 8);
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52 reference[3] = cast(byte)(length & 0xFF);
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53 }
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55 public bool writeToStream(LEDataOutputStream byteStream) {
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56 try {
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57 byteStream.write(reference);
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58 return true;
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59 } catch (Exception e) {
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60 return false;
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61 }
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62 }
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63 }