001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/model/coverage/grid/GeoTIFFGridCoverageWriter.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstr. 19
030 53115 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: klaus.greve@uni-bonn.de
041
042
043 ---------------------------------------------------------------------------*/
044 package org.deegree.model.coverage.grid;
045
046 import java.awt.image.BufferedImage;
047 import java.io.IOException;
048 import java.io.OutputStream;
049 import java.util.Map;
050
051 import org.deegree.datatypes.parameter.GeneralParameterValueIm;
052 import org.deegree.datatypes.parameter.InvalidParameterNameException;
053 import org.deegree.datatypes.parameter.InvalidParameterValueException;
054 import org.deegree.datatypes.parameter.OperationParameterIm;
055 import org.deegree.datatypes.parameter.ParameterNotFoundException;
056 import org.deegree.framework.log.ILogger;
057 import org.deegree.framework.log.LoggerFactory;
058 import org.deegree.i18n.Messages;
059 import org.deegree.io.geotiff.GeoTiffWriter;
060 import org.deegree.model.crs.CoordinateSystem;
061 import org.deegree.model.spatialschema.Envelope;
062 import org.deegree.model.spatialschema.GeometryFactory;
063 import org.opengis.pt.PT_Envelope;
064
065 /**
066 * This class encapsulates functionality for writing a <tt>GridCoverage</tt> as a GeoTIFF to a
067 * defined destination. Ths destination will be given as an <tt>OutputStream</tt>. The current
068 * implementation is limited to support <tt>ImageGridCoverage</tt>s to be written as GeoTIFF.
069 *
070 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
071 * @author last edited by: $Author: apoth $
072 *
073 * @version $Revision: 9343 $, $Date: 2007-12-27 14:30:32 +0100 (Do, 27 Dez 2007) $
074 */
075 public class GeoTIFFGridCoverageWriter extends AbstractGridCoverageWriter {
076
077 private static final ILogger LOG = LoggerFactory.getLogger( GeoTIFFGridCoverageWriter.class );
078
079 /**
080 * @param destination
081 * @param metadata
082 * @param subNames
083 * @param currentSubname
084 * @param format
085 */
086 public GeoTIFFGridCoverageWriter( Object destination, Map<String, Object> metadata, String[] subNames,
087 String currentSubname, Format format ) {
088 super( destination, metadata, subNames, currentSubname, format );
089 }
090
091 /**
092 * Writes the specified grid coverage. The GridCoverage will be written in its original size
093 * (width/height).
094 *
095 * @see #write(GridCoverage, int, int, GeneralParameterValue[])
096 *
097 * @param coverage
098 * The {@linkplain GridCoverage grid coverage} to write.
099 * @param parameters
100 * An optional set of parameters. Should be any or all of the parameters returned by
101 * {@link "org.opengis.coverage.grid.Format#getWriteParameters"}.
102 * @throws InvalidParameterNameException
103 * if a parameter in <code>parameters</code> doesn't have a recognized name.
104 * @throws InvalidParameterValueException
105 * if a parameter in <code>parameters</code> doesn't have a valid value.
106 * @throws ParameterNotFoundException
107 * if a parameter was required for the operation but was not provided in the
108 * <code>parameters</code> list.
109 * @throws FileFormatNotCompatibleWithGridCoverageException
110 * if the grid coverage can't be exported in the
111 * {@linkplain org.opengis.coverage.grid.GridCoverageWriter#getFormat writer format}.
112 * @throws IOException
113 * if the export failed for some other input/output reason, including
114 * {@link javax.imageio.IIOException} if an error was thrown by the underlying image
115 * library.
116 */
117 public void write( GridCoverage coverage, GeneralParameterValueIm[] parameters )
118 throws InvalidParameterNameException, InvalidParameterValueException,
119 ParameterNotFoundException, IOException {
120
121 int width = -1;
122 int height = -1;
123 for ( int i = 0; i < parameters.length; i++ ) {
124 OperationParameterIm op = (OperationParameterIm) parameters[i].getDescriptor();
125 String name = op.getName();
126 if ( name.equalsIgnoreCase( "WIDTH" ) ) {
127 Object o = op.getDefaultValue();
128 width = ( (Integer) o ).intValue();
129 } else if ( name.equalsIgnoreCase( "HEIGHT" ) ) {
130 Object o = op.getDefaultValue();
131 height = ( (Integer) o ).intValue();
132 }
133 }
134
135 OutputStream out = (OutputStream) destination;
136 AbstractGridCoverage igc = (AbstractGridCoverage) coverage;
137 BufferedImage bi = igc.getAsImage( width, height );
138 PT_Envelope ptenv = igc.getEnvelope();
139 double xmin = ptenv.minCP.ord[0];
140 double ymin = ptenv.minCP.ord[1];
141 double xmax = ptenv.maxCP.ord[0];
142 double ymax = ptenv.maxCP.ord[1];
143 CoordinateSystem crs = null;
144 Envelope envelope = GeometryFactory.createEnvelope( xmin, ymin, xmax, ymax, null );
145 try {
146 double offset = 0;
147 double scaleFactor = 1;
148 if ( metadata.get( "offset" ) != null ) {
149 offset = (Double) metadata.get( "offset" );
150 }
151 if ( metadata.get( "scaleFactor" ) != null ) {
152 scaleFactor = (Double) metadata.get( "scaleFactor" );
153 }
154
155 GeoTiffWriter gtw = new GeoTiffWriter( bi, envelope, ( xmax - xmin ) / bi.getWidth(), ( ymax - ymin )
156 / bi.getHeight(),
157 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
169 * method subsequent to a call to this method is undefined. It is important for applications to
170 * call this method when they know they will no longer be using this
171 * <code>GridCoverageWriter</code>. Otherwise, the writer may continue to hold on to
172 * resources indefinitely.
173 *
174 * @throws IOException
175 * if an error occured while disposing resources (for example while flushing data
176 * and closing a file).
177 */
178 public void dispose()
179 throws IOException {
180 ( (OutputStream) destination ).close();
181 }
182
183 }