    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/model/coverage/grid/GeoTIFFGridCoverageWriter.java $
    002    /*----------------------------------------------------------------------------
    003     This file is part of deegree, http://deegree.org/
    004     Copyright (C) 2001-2009 by:
    005       Department of Geography, University of Bonn
    006     and
    007       lat/lon GmbH
    008
    009     This library is free software; you can redistribute it and/or modify it under
    010     the terms of the GNU Lesser General Public License as published by the Free
    011     Software Foundation; either version 2.1 of the License, or (at your option)
    012     any later version.
    013     This library is distributed in the hope that it will be useful, but WITHOUT
    014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
    016     details.
    017     You should have received a copy of the GNU Lesser General Public License
    018     along with this library; if not, write to the Free Software Foundation, Inc.,
    019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    020
    021     Contact information:
    022
    023     lat/lon GmbH
    024     Aennchenstr. 19, 53177 Bonn
    025     Germany
    026     http://lat-lon.de/
    027
    028     Department of Geography, University of Bonn
    029     Prof. Dr. Klaus Greve
    030     Postfach 1147, 53001 Bonn
    031     Germany
    032     http://www.geographie.uni-bonn.de/deegree/
    033
    034     e-mail: info@deegree.org
    035    ----------------------------------------------------------------------------*/
    036    package org.deegree.model.coverage.grid;
    037
    038    import java.awt.image.BufferedImage;
    039    import java.io.IOException;
    040    import java.io.OutputStream;
    041    import java.util.Map;
    042
    043    import org.deegree.datatypes.parameter.GeneralParameterValueIm;
    044    import org.deegree.datatypes.parameter.InvalidParameterNameException;
    045    import org.deegree.datatypes.parameter.InvalidParameterValueException;
    046    import org.deegree.datatypes.parameter.OperationParameterIm;
    047    import org.deegree.datatypes.parameter.ParameterNotFoundException;
    048    import org.deegree.framework.log.ILogger;
    049    import org.deegree.framework.log.LoggerFactory;
    050    import org.deegree.i18n.Messages;
    051    import org.deegree.io.geotiff.GeoTiffWriter;
    052    import org.deegree.model.crs.CRSFactory;
    053    import org.deegree.model.crs.CoordinateSystem;
    054    import org.deegree.model.crs.UnknownCRSException;
    055    import org.deegree.model.spatialschema.Envelope;
    056    import org.deegree.model.spatialschema.GeometryFactory;
    057
    058    /**
    059     * This class encapsulates functionality for writing a <tt>GridCoverage</tt> as a GeoTIFF to a defined destination. Ths
    060     * destination will be given as an <tt>OutputStream</tt>. The current implementation is limited to support
    061     * <tt>ImageGridCoverage</tt>s to be written as GeoTIFF.
    062     *
    063     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
    064     * @author last edited by: $Author: mschneider $
    065     *
    066     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    067     */
    068    public class GeoTIFFGridCoverageWriter extends AbstractGridCoverageWriter {
    069
    070        private static final ILogger LOG = LoggerFactory.getLogger( GeoTIFFGridCoverageWriter.class );
    071
    072        /**
    073         * @param destination
    074         * @param metadata
    075         * @param subNames
    076         * @param currentSubname
    077         * @param format
    078         */
    079        public GeoTIFFGridCoverageWriter( Object destination, Map<String, Object> metadata, String[] subNames,
    080                                          String currentSubname, Format format ) {
    081            super( destination, metadata, subNames, currentSubname, format );
    082        }
    083
    084        /**
    085         * Writes the specified grid coverage. The GridCoverage will be written in its original size (width/height).
    086         *
    087         * @param coverage
    088         *            The {@linkplain GridCoverage grid coverage} to write.
    089         * @param parameters
    090         *            An optional set of parameters. Should be any or all of the parameters returned by
    091         *            {@link "org.opengis.coverage.grid.Format#getWriteParameters"}.
    092         * @throws InvalidParameterNameException
    093         *             if a parameter in <code>parameters</code> doesn't have a recognized name.
    094         * @throws InvalidParameterValueException
    095         *             if a parameter in <code>parameters</code> doesn't have a valid value.
    096         * @throws ParameterNotFoundException
    097         *             if a parameter was required for the operation but was not provided in the <code>parameters</code>
    098         *             list.
    099         * @throws IOException
    100         *             if the export failed for some other input/output reason, including {@link javax.imageio.IIOException}
    101         *             if an error was thrown by the underlying image library.
    102         */
    103        public void write( GridCoverage coverage, GeneralParameterValueIm[] parameters )
    104                                throws InvalidParameterNameException, InvalidParameterValueException,
    105                                ParameterNotFoundException, IOException {
    106
    107            int width = -1;
    108            int height = -1;
    109            String response_crs = null;
    110            for ( int i = 0; i < parameters.length; i++ ) {
    111                OperationParameterIm op = (OperationParameterIm) parameters[i].getDescriptor();
    112                String name = op.getName();
    113                if ( name.equalsIgnoreCase( "WIDTH" ) ) {
    114                    Object o = op.getDefaultValue();
    115                    width = ( (Integer) o ).intValue();
    116                } else if ( name.equalsIgnoreCase( "HEIGHT" ) ) {
    117                    Object o = op.getDefaultValue();
    118                    height = ( (Integer) o ).intValue();
    119                } else if ( name.equalsIgnoreCase( "response_crs" ) ) {
    120                    Object o = op.getDefaultValue();
    121                    response_crs = (String) o;
    122                }
    123            }
    124
    125            OutputStream out = (OutputStream) destination;
    126            AbstractGridCoverage igc = (AbstractGridCoverage) coverage;
    127            BufferedImage bi = igc.getAsImage( width, height );
    128            Envelope ptenv = igc.getEnvelope();
    129            double xmin = ptenv.getMin().getX();
    130            double ymin = ptenv.getMin().getY();
    131            double xmax = ptenv.getMax().getX();
    132            double ymax = ptenv.getMax().getY();
    133            CoordinateSystem crs = null;
    134            if ( response_crs != null ) {
    135                try {
    136                    crs = CRSFactory.create( response_crs );
    137                } catch ( UnknownCRSException e ) {
    138                    // only needed for GeoTIFF CRS information
    139                }
    140            }
    141
    142            Envelope envelope = GeometryFactory.createEnvelope( xmin, ymin, xmax, ymax, null );
    143
    144            double xRes = envelope.getWidth() / bi.getWidth();
    145            double yRes = envelope.getHeight() / bi.getHeight();
    146
    147            try {
    148                double offset = 0;
    149                double scaleFactor = 1;
    150                if ( metadata.get( "offset" ) != null ) {
    151                    offset = (Double) metadata.get( "offset" );
    152                }
    153                if ( metadata.get( "scaleFactor" ) != null ) {
    154                    scaleFactor = (Double) metadata.get( "scaleFactor" );
    155                }
    156                LOG.logDebug( "offset " + offset );
    157                GeoTiffWriter gtw = new GeoTiffWriter( bi, envelope, xRes, yRes, crs, offset, scaleFactor );
    158
    159                gtw.write( out );
    160
    161            } catch ( Exception e ) {
    162                LOG.logError( e.getMessage(), e );
    163                throw new IOException( Messages.getMessage( "GC_ERROR_GEOTIFFWRITER" ) );
    164            }
    165        }
    166
    167        /**
    168         * Allows any resources held by this object to be released. The result of calling any other method subsequent to a
    169         * call to this method is undefined. It is important for applications to call this method when they know they will
    170         * no longer be using this <code>GridCoverageWriter</code>. Otherwise, the writer may continue to hold on to
    171         * resources indefinitely.
    172         *
    173         * @throws IOException
    174         *             if an error occured while disposing resources (for example while flushing data and closing a file).
    175         */
    176        public void dispose()
    177                                throws IOException {
    178            ( (OutputStream) destination ).close();
    179        }
    180
    181    }