Mercurial > hg > digilib-old
view servlet/src/digilib/image/ImageLoaderImageInfoDocuInfo.java @ 166:6132c29ac9f9
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 22:45:51 +0100 |
parents | e743b853efca |
children | d40922628e4a |
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/* ImageLoaderImageInfoDocuInfo -- DocuInfo implementation using ImageInfo and ImageLoader API Digital Image Library servlet components Copyright (C) 2003 Robert Casties (robcast@mail.berlios.de) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Please read license.txt for the full details. A copy of the GPL may be found at http://www.gnu.org/copyleft/lgpl.html You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * Created on 11.06.2003 */ package digilib.image; import ImageInfo; import java.io.File; import java.io.IOException; import java.io.RandomAccessFile; import java.util.Iterator; import javax.imageio.ImageIO; import javax.imageio.ImageReader; import javax.imageio.stream.ImageInputStream; import digilib.io.FileOpException; import digilib.io.FileOps; import digilib.io.ImageFile; /** * @author casties * */ public class ImageLoaderImageInfoDocuInfo implements DocuInfo { /* check image size and type and store in ImageFile f */ public boolean checkFile(ImageFile imgf) throws IOException { File f = imgf.getFile(); if (f == null) { throw new IOException("File not found!"); } RandomAccessFile raf = new RandomAccessFile(f, "r"); // set up ImageInfo object ImageInfo iif = new ImageInfo(); iif.setInput(raf); iif.setCollectComments(false); iif.setDetermineImageNumber(false); // try with ImageInfo first if (iif.check()) { ImageSize d = new ImageSize(iif.getWidth(), iif.getHeight()); imgf.setSize(d); imgf.setMimetype(iif.getMimeType()); raf.close(); } else { // else use ImageReader ImageInputStream istream = ImageIO.createImageInputStream(raf); Iterator readers = ImageIO.getImageReaders(istream); //String ext = f.getName().substring(f.getName().lastIndexOf('.')+1); //Iterator readers = ImageIO.getImageReadersBySuffix(ext); if (! readers.hasNext()) { throw new FileOpException("ERROR: unknown image file format!"); } ImageReader reader = (ImageReader) readers.next(); /* are there more readers? */ System.out.println("this reader: " + reader.getClass()); while (readers.hasNext()) { System.out.println("next reader: " + readers.next().getClass()); } reader.setInput(istream); ImageSize d = new ImageSize(reader.getWidth(0), reader.getHeight(0)); imgf.setSize(d); String t = reader.getFormatName(); t = FileOps.mimeForFile(f); imgf.setMimetype(t); // dispose the reader to free resources reader.dispose(); } return true; } }