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 |
|---|---|
| date | Wed, 29 Oct 2003 22:47:15 +0100 |
| parents | e743b853efca |
| children | afe7ff98bb71 |
| rev | line source |
|---|---|
| 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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robcast
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92 } |
| 149 | 93 // dispose the reader to free resources |
| 94 reader.dispose(); | |
| 95 } | |
| 96 return true; | |
| 97 } | |
| 98 | |
| 99 } |