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comparison dwt/internal/image/JPEGSegment.d @ 0:380af2bdd8e5

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author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sat, 09 Aug 2008 17:00:02 +0200
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children 1a8b3cb347e0
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-1:000000000000 0:380af2bdd8e5
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 module dwt.internal.image;
12
13
14 class JPEGSegment {
15 public byte[] reference;
16
17 JPEGSegment() {
18 }
19
20 public JPEGSegment(byte[] reference) {
21 this.reference = reference;
22 }
23
24 public int signature() {
25 return 0;
26 }
27
28 public bool verify() {
29 return getSegmentMarker() is signature();
30 }
31
32 public int getSegmentMarker() {
33 return ((reference[0] & 0xFF) << 8 | (reference[1] & 0xFF));
34 }
35
36 public void setSegmentMarker(int marker) {
37 reference[0] = (byte)((marker & 0xFF00) >> 8);
38 reference[1] = (byte)(marker & 0xFF);
39 }
40
41 public int getSegmentLength() {
42 return ((reference[2] & 0xFF) << 8 | (reference[3] & 0xFF));
43 }
44
45 public void setSegmentLength(int length) {
46 reference[2] = (byte)((length & 0xFF00) >> 8);
47 reference[3] = (byte)(length & 0xFF);
48 }
49
50 public bool writeToStream(LEDataOutputStream byteStream) {
51 try {
52 byteStream.write(reference);
53 return true;
54 } catch (Exception e) {
55 return false;
56 }
57 }
58 }