Mercurial > hg > digilib-old
annotate servlet/src/digilib/image/ImageLoaderImageInfoDocuInfo.java @ 263:e16d132aa6f6
Servlet version 1.21b1
- directory indexing got faster but less safe
(configurable by "safe-dir-index")
- mo=rawfile supplies filename
- DigilibConfig takes File parameters
- some SerialVersionUIDs (suggested by Eclipse)
| author | robcast |
|---|---|
| date | Mon, 11 Oct 2004 21:23:00 +0200 |
| parents | 85a0abfa1b8c |
| children |
| rev | line source |
|---|---|
| 220 | 1 /* |
| 2 * ImageLoaderImageInfoDocuInfo -- DocuInfo implementation using ImageInfo and | |
| 3 * ImageLoader API | |
| 4 * | |
| 5 * Digital Image Library servlet components | |
| 6 * | |
| 7 * Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de) | |
| 8 * | |
| 9 * This program is free software; you can redistribute it and/or modify it under | |
| 10 * the terms of the GNU General Public License as published by the Free Software | |
| 11 * Foundation; either version 2 of the License, or (at your option) any later | |
| 12 * version. | |
| 13 * | |
| 14 * Please read license.txt for the full details. A copy of the GPL may be found | |
| 15 * at http://www.gnu.org/copyleft/lgpl.html | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License along with | |
| 18 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
| 19 * Place, Suite 330, Boston, MA 02111-1307 USA | |
| 20 * | |
| 149 | 21 * Created on 11.06.2003 |
| 22 */ | |
| 23 package digilib.image; | |
| 159 | 24 import java.io.File; |
| 149 | 25 import java.io.IOException; |
| 26 import java.io.RandomAccessFile; | |
| 27 import java.util.Iterator; | |
| 28 import javax.imageio.ImageIO; | |
| 29 import javax.imageio.ImageReader; | |
| 30 import javax.imageio.stream.ImageInputStream; | |
| 181 | 31 import org.apache.log4j.Logger; |
|
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32 import org.marcoschmidt.image.ImageInfo; |
| 156 | 33 import digilib.io.FileOpException; |
| 149 | 34 import digilib.io.FileOps; |
| 159 | 35 import digilib.io.ImageFile; |
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36 import digilib.io.ImageFileset; |
| 149 | 37 /** |
| 38 * @author casties | |
| 220 | 39 * |
| 149 | 40 */ |
| 41 public class ImageLoaderImageInfoDocuInfo implements DocuInfo { | |
| 181 | 42 private Logger logger = Logger.getLogger(this.getClass()); |
| 159 | 43 /* check image size and type and store in ImageFile f */ |
| 44 public boolean checkFile(ImageFile imgf) throws IOException { | |
| 205 | 45 // fileset to store the information |
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46 ImageFileset imgfs = imgf.getParent(); |
| 159 | 47 File f = imgf.getFile(); |
| 48 if (f == null) { | |
| 49 throw new IOException("File not found!"); | |
| 50 } | |
| 51 RandomAccessFile raf = new RandomAccessFile(f, "r"); | |
| 149 | 52 // set up ImageInfo object |
| 53 ImageInfo iif = new ImageInfo(); | |
| 54 iif.setInput(raf); | |
| 55 iif.setCollectComments(false); | |
| 56 iif.setDetermineImageNumber(false); | |
| 220 | 57 logger.debug("identifying (ImageInfo) " + f); |
| 149 | 58 // try with ImageInfo first |
| 59 if (iif.check()) { | |
| 220 | 60 ImageSize d = new ImageSize(iif.getWidth(), iif.getHeight()); |
| 159 | 61 imgf.setSize(d); |
| 62 imgf.setMimetype(iif.getMimeType()); | |
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63 if (imgfs != null) { |
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64 imgfs.setAspect(d); |
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65 } |
| 149 | 66 raf.close(); |
| 67 } else { | |
| 220 | 68 logger.debug("identifying (ImageIO) " + f); |
| 69 /* | |
| 70 * else use ImageReader | |
| 71 */ | |
| 149 | 72 ImageInputStream istream = ImageIO.createImageInputStream(raf); |
| 73 Iterator readers = ImageIO.getImageReaders(istream); | |
| 220 | 74 if ((readers == null) || (!readers.hasNext())) { |
| 156 | 75 throw new FileOpException("ERROR: unknown image file format!"); |
| 76 } | |
| 149 | 77 ImageReader reader = (ImageReader) readers.next(); |
| 78 /* are there more readers? */ | |
| 205 | 79 logger.debug("ImageIO: this reader: " + reader.getClass()); |
| 149 | 80 while (readers.hasNext()) { |
| 220 | 81 logger.debug("ImageIO: next reader: " |
| 82 + readers.next().getClass()); | |
| 149 | 83 } |
| 84 reader.setInput(istream); | |
| 220 | 85 ImageSize d = 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(); | |
| 205 | 95 raf.close(); |
| 149 | 96 } |
| 257 | 97 logger.debug("image size: " + imgf.getSize()); |
| 149 | 98 return true; |
| 99 } | |
| 220 | 100 } |