package de.sub.goobi.export.download;
/**
* This file is part of the Goobi Application - a Workflow tool for the support of mass digitization.
*
* Visit the websites for more information.
* - http://www.goobi.org
* - http://launchpad.net/goobi-production
* - http://gdz.sub.uni-goettingen.de
* - http://www.intranda.com
* - http://digiverso.com
*
* 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.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* 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
*
* Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions
* of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to
* link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and
* conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this
* library, you may extend this exception to your version of the library, but you are not obliged to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
import java.awt.image.RenderedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Vector;
import javax.faces.context.FacesContext;
import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;
import javax.servlet.ServletContext;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.TIFFEncodeParam;
import de.sub.goobi.beans.Prozess;
import de.sub.goobi.helper.Helper;
import de.sub.goobi.helper.exceptions.DAOException;
import de.sub.goobi.helper.exceptions.SwapException;
/**
* Die Klasse Multipage dient zur Erzeugung von mehrseitigen Tiffs
*
* @author Steffen Hankiewicz
* @version 1.00 - 12.04.2005
*/
public class Multipage {
private static final Logger myLogger = Logger.getLogger(Multipage.class);
Helper help = new Helper();
private void create(Prozess inProzess) throws IOException, InterruptedException, SwapException, DAOException {
/* alle tifs durchlaufen */
String pfad = inProzess.getImagesDirectory();
File dir = new File(pfad);
String[] dateien = dir.list(Helper.imageNameFilter);
/* keine Tifs vorhanden, also raus */
if (dateien == null) {
myLogger.debug("Verzeichnis ist leer");
return;
}
/* alle Bilder in ein Array übernehmen */
RenderedImage image[] = new PlanarImage[dateien.length];
for (int i = 0; i < dateien.length; i++) {
myLogger.debug(pfad + dateien[i]);
image[i] = JAI.create("fileload", pfad + dateien[i]);
}
myLogger.debug("Bilder durchlaufen");
/*
* -------------------------------- alle Bilder als Multipage erzeugen --------------------------------
*/
OutputStream out = new FileOutputStream(this.help.getGoobiDataDirectory() + inProzess.getId().intValue() + File.separator + "multipage.tiff");
TIFFEncodeParam param = new TIFFEncodeParam();
param.setCompression(4);
ImageEncoder encoder = ImageCodec.createImageEncoder("TIFF", out, param);
Vector<RenderedImage> vector = new Vector<RenderedImage>();
for (int i = 1; i < image.length; i++) {
vector.add(image[i]);
}
param.setExtraImages(vector.iterator());
encoder.encode(image[0]);
out.close();
myLogger.debug("fertig");
}
public void ExportStart(Prozess inProzess) throws IOException, InterruptedException, SwapException, DAOException {
FacesContext facesContext = FacesContext.getCurrentInstance();
if (!facesContext.getResponseComplete()) {
HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();
String fileName = inProzess.getTitel() + ".tif";
ServletContext servletContext = (ServletContext) facesContext.getExternalContext().getContext();
String contentType = servletContext.getMimeType(fileName);
response.setContentType(contentType);
response.setHeader("Content-Disposition", "attachment;filename=\"" + fileName + "\"");
ServletOutputStream out = response.getOutputStream();
/*
* -------------------------------- die txt-Datei direkt in den Stream schreiben lassen --------------------------------
*/
String filename = this.help.getGoobiDataDirectory() + inProzess.getId().intValue() + File.separator + "multipage.tiff";
if (!(new File(filename)).exists()) {
create(inProzess);
}
FileInputStream fis = null;
try {
fis = new FileInputStream(filename);
byte[] buf = new byte[4 * 1024]; // 4K buffer //how about 4096?
int bytesRead;
while ((bytesRead = fis.read(buf)) != -1) {
out.write(buf, 0, bytesRead);
}
} finally {
if (fis != null) {
fis.close();
}
}
/*
* -------------------------------- den Stream zurückgeben --------------------------------
*/
out.flush();
facesContext.responseComplete();
}
}
}