001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_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 }