/**
* Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source
* Software GmbH
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* If the program is linked with libraries which are licensed under one of
* the following licenses, the combination of the program with the linked
* library is not considered a "derivative work" of the program:
*
* • Apache License, version 2.0
* • Apache Software License, version 1.0
* • GNU Lesser General Public License, version 3
* • Mozilla Public License, versions 1.0, 1.1 and 2.0
* • Common Development and Distribution License (CDDL), version 1.0
*
* Therefore the distribution of the program linked with libraries licensed
* under the aforementioned licenses, is permitted by the copyright holders
* if the distribution is compliant with both the GNU General Public
* License version 2 and the aforementioned licenses.
*
* As an exception to the terms of the GPL, you may copy, modify,
* propagate, and distribute a work formed by combining 52°North WPS
* GeoTools Modules with the Eclipse Libraries, or a work derivative of
* such a combination, even if such copying, modification, propagation, or
* distribution would otherwise violate the terms of the GPL. Nothing in
* this exception exempts you from complying with the GPL in all respects
* for all of the code used other than the Eclipse Libraries. You may
* include this exception and its grant of permissions when you distribute
* 52°North WPS GeoTools Modules. Inclusion of this notice with such a
* distribution constitutes a grant of such permissions. If you do not wish
* to grant these permissions, remove this paragraph from your
* distribution. "52°North WPS GeoTools Modules" means the 52°North WPS
* modules using GeoTools functionality - software licensed under version 2
* or any later version of the GPL, or a work based on such software and
* licensed under the GPL. "Eclipse Libraries" means Eclipse Modeling
* Framework Project and XML Schema Definition software distributed by the
* Eclipse Foundation and licensed under the Eclipse Public License Version
* 1.0 ("EPL"), or a work based on such software and licensed under the EPL.
*
* 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.
*/
package org.n52.wps.io.datahandler.generator;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;
import javax.media.jai.JAI;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverage.grid.io.AbstractGridFormat;
import org.geotools.coverage.grid.io.imageio.GeoToolsWriteParams;
import org.geotools.gce.geotiff.GeoTiffFormat;
import org.geotools.gce.geotiff.GeoTiffWriteParams;
import org.geotools.gce.geotiff.GeoTiffWriter;
import org.n52.wps.io.data.IData;
import org.n52.wps.io.data.binding.complex.GTRasterDataBinding;
import org.n52.wps.io.data.binding.complex.GeotiffBinding;
import org.opengis.coverage.grid.GridCoverage;
import org.opengis.parameter.GeneralParameterValue;
import org.opengis.parameter.ParameterValueGroup;
public class GeotiffGenerator extends AbstractGenerator {
private static Logger LOGGER = LoggerFactory.getLogger(GeotiffGenerator.class);
public GeotiffGenerator() {
super();
supportedIDataTypes.add(GTRasterDataBinding.class);
supportedIDataTypes.add(GeotiffBinding.class);
}
public InputStream generateStream(IData data, String mimeType, String schema) throws IOException {
InputStream stream = null;
if((data instanceof GTRasterDataBinding)){
GridCoverage coverage = ((GTRasterDataBinding)data).getPayload();
GeoTiffWriter geoTiffWriter = null;
String tmpDirPath = System.getProperty("java.io.tmpdir");
String fileName = tmpDirPath + File.separatorChar + "temp" + UUID.randomUUID() + ".tmp";
File outputFile = new File(fileName);
this.finalizeFiles.add(outputFile); // mark file for final delete
try {
geoTiffWriter = new GeoTiffWriter(outputFile);
writeGeotiff(geoTiffWriter, coverage);
geoTiffWriter.dispose();
stream = new FileInputStream(outputFile);
} catch (IOException e) {
LOGGER.error(e.getMessage());
throw new IOException("Could not create output due to an IO error");
}
}
if(data instanceof GeotiffBinding){
File geotiff = ((GeotiffBinding)data).getPayload();
try {
stream = new FileInputStream(geotiff);
} catch (FileNotFoundException e) {
throw new IOException("Error while generating geotiff. Source file not found.");
}
}
return stream;
}
private void writeGeotiff(GeoTiffWriter geoTiffWriter, GridCoverage coverage){
GeoTiffFormat format = new GeoTiffFormat();
GeoTiffWriteParams wp = new GeoTiffWriteParams();
wp.setCompressionMode(GeoTiffWriteParams.MODE_EXPLICIT);
wp.setCompressionType("LZW");
wp.setTilingMode(GeoToolsWriteParams.MODE_EXPLICIT);
int width = ((GridCoverage2D) coverage).getRenderedImage().getWidth();
int tileWidth = 1024;
if(width<2048){
tileWidth = new Double(Math.sqrt(width)).intValue();
}
wp.setTiling(tileWidth, tileWidth);
ParameterValueGroup paramWrite = format.getWriteParameters();
paramWrite.parameter(AbstractGridFormat.GEOTOOLS_WRITE_PARAMS.getName().toString()).setValue(wp);
JAI.getDefaultInstance().getTileCache().setMemoryCapacity(256*1024*1024);
try {
geoTiffWriter.write(coverage, (GeneralParameterValue[])paramWrite.values().toArray(new
GeneralParameterValue[1]));
} catch (IllegalArgumentException e1) {
LOGGER.error(e1.getMessage(), e1);
throw new RuntimeException(e1);
} catch (IndexOutOfBoundsException e1) {
LOGGER.error(e1.getMessage(), e1);
throw new RuntimeException(e1);
} catch (IOException e1) {LOGGER.error(e1.getMessage(), e1);
throw new RuntimeException(e1);
}
}
}