Mercurial > hg > digilib-old
annotate servlet/src/digilib/image/ImageLoaderImageInfoDocuInfo.java @ 170:d40922628e4a
Servlet Version 1.16b2 with new DigilibParameter code.
- more generic class for request parameters
- like already done for DiglibConfig
- changes in JSPs for new request stuff
- changes in ImageSize class so size=0 is "wildcard"
- missing dw and dh parameters now treated as wildcards
- changed package name in imageinfo class
author | robcast |
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date | Wed, 29 Oct 2003 22:47:15 +0100 |
parents | e743b853efca |
children | afe7ff98bb71 |
rev | line source |
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149 | 1 /* ImageLoaderImageInfoDocuInfo -- DocuInfo implementation using ImageInfo and ImageLoader API |
2 | |
3 Digital Image Library servlet components | |
4 | |
5 Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de) | |
6 | |
7 This program is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by the | |
9 Free Software Foundation; either version 2 of the License, or (at your | |
10 option) any later version. | |
11 | |
12 Please read license.txt for the full details. A copy of the GPL | |
13 may be found at http://www.gnu.org/copyleft/lgpl.html | |
14 | |
15 You should have received a copy of the GNU General Public License | |
16 along with this program; if not, write to the Free Software | |
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | |
19 * Created on 11.06.2003 | |
20 */ | |
21 package digilib.image; | |
22 | |
159 | 23 import java.io.File; |
149 | 24 import java.io.IOException; |
25 import java.io.RandomAccessFile; | |
26 import java.util.Iterator; | |
27 | |
28 import javax.imageio.ImageIO; | |
29 import javax.imageio.ImageReader; | |
30 import javax.imageio.stream.ImageInputStream; | |
31 | |
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32 import org.marcoschmidt.image.ImageInfo; |
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33 |
156 | 34 import digilib.io.FileOpException; |
149 | 35 import digilib.io.FileOps; |
159 | 36 import digilib.io.ImageFile; |
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37 import digilib.io.ImageFileset; |
149 | 38 |
39 /** | |
40 * @author casties | |
41 * | |
42 */ | |
43 public class ImageLoaderImageInfoDocuInfo implements DocuInfo { | |
44 | |
159 | 45 /* check image size and type and store in ImageFile f */ |
46 public boolean checkFile(ImageFile imgf) throws IOException { | |
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47 ImageFileset imgfs = imgf.getParent(); |
159 | 48 File f = imgf.getFile(); |
49 if (f == null) { | |
50 throw new IOException("File not found!"); | |
51 } | |
52 RandomAccessFile raf = new RandomAccessFile(f, "r"); | |
149 | 53 // set up ImageInfo object |
54 ImageInfo iif = new ImageInfo(); | |
55 iif.setInput(raf); | |
56 iif.setCollectComments(false); | |
57 iif.setDetermineImageNumber(false); | |
58 // try with ImageInfo first | |
59 if (iif.check()) { | |
60 ImageSize d = | |
61 new ImageSize(iif.getWidth(), iif.getHeight()); | |
159 | 62 imgf.setSize(d); |
63 imgf.setMimetype(iif.getMimeType()); | |
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64 if (imgfs != null) { |
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65 imgfs.setAspect(d); |
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66 } |
149 | 67 raf.close(); |
68 } else { | |
69 // else use ImageReader | |
70 ImageInputStream istream = ImageIO.createImageInputStream(raf); | |
71 Iterator readers = ImageIO.getImageReaders(istream); | |
72 //String ext = f.getName().substring(f.getName().lastIndexOf('.')+1); | |
73 //Iterator readers = ImageIO.getImageReadersBySuffix(ext); | |
156 | 74 if (! readers.hasNext()) { |
75 throw new FileOpException("ERROR: unknown image file format!"); | |
76 } | |
149 | 77 ImageReader reader = (ImageReader) readers.next(); |
78 /* are there more readers? */ | |
79 System.out.println("this reader: " + reader.getClass()); | |
80 while (readers.hasNext()) { | |
81 System.out.println("next reader: " + readers.next().getClass()); | |
82 } | |
83 reader.setInput(istream); | |
84 ImageSize d = | |
85 new ImageSize(reader.getWidth(0), reader.getHeight(0)); | |
159 | 86 imgf.setSize(d); |
149 | 87 String t = reader.getFormatName(); |
159 | 88 t = FileOps.mimeForFile(f); |
89 imgf.setMimetype(t); | |
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90 if (imgfs != null) { |
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91 imgfs.setAspect(d); |
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92 } |
149 | 93 // dispose the reader to free resources |
94 reader.dispose(); | |
95 } | |
96 return true; | |
97 } | |
98 | |
99 } |