001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/model/coverage/grid/ImageGridCoverageWriter.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.io.IOException;
047 import java.io.OutputStream;
048 import java.util.Map;
049
050 import org.deegree.datatypes.parameter.GeneralParameterValueIm;
051 import org.deegree.datatypes.parameter.InvalidParameterNameException;
052 import org.deegree.datatypes.parameter.InvalidParameterValueException;
053 import org.deegree.datatypes.parameter.OperationParameterIm;
054 import org.deegree.datatypes.parameter.ParameterNotFoundException;
055 import org.deegree.framework.util.ImageUtils;
056
057 /**
058 * This class encapsulates functionality for writing a <tt>GridCoverage</tt> as a GeoTIFF to a
059 * defined destination. Ths destination will be given as an <tt>OutputStream</tt>. The current
060 * implementation is limited to support <tt>ImageGridCoverage</tt>s to be written as GeoTIFF.
061 *
062 * @version $Revision: 9343 $
063 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
064 * @author last edited by: $Author: apoth $
065 *
066 * @version 1.0. $Revision: 9343 $, $Date: 2007-12-27 14:30:32 +0100 (Do, 27 Dez 2007) $
067 *
068 * @since 2.0
069 */
070 public class ImageGridCoverageWriter extends AbstractGridCoverageWriter {
071
072 /**
073 * @param destination
074 * @param metadata
075 * @param subNames
076 * @param currentSubname
077 * @param format
078 */
079 public ImageGridCoverageWriter( 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.
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
098 * <code>parameters</code> list.
099 * @throws FileFormatNotCompatibleWithGridCoverageException
100 * if the grid coverage can't be exported in the
101 * {@linkplain org.opengis.coverage.grid.GridCoverageWriter#getFormat writer format}.
102 * @throws IOException
103 * if the export failed for some other input/output reason, including
104 * {@link javax.imageio.IIOException} if an error was thrown by the underlying image
105 * library.
106 */
107 public void write( GridCoverage coverage, GeneralParameterValueIm[] parameters )
108 throws InvalidParameterNameException, InvalidParameterValueException,
109 ParameterNotFoundException, IOException {
110 int width = -1;
111 int height = -1;
112 for ( int i = 0; i < parameters.length; i++ ) {
113 OperationParameterIm op = (OperationParameterIm) parameters[i].getDescriptor();
114 String name = op.getName();
115 if ( name.equalsIgnoreCase( "WIDTH" ) ) {
116 Object o = op.getDefaultValue();
117 width = ( (Integer) o ).intValue();
118 } else if ( name.equalsIgnoreCase( "HEIGHT" ) ) {
119 Object o = op.getDefaultValue();
120 height = ( (Integer) o ).intValue();
121 }
122 }
123
124 OutputStream out = (OutputStream) destination;
125 ImageGridCoverage igc = (ImageGridCoverage) coverage;
126 ImageUtils.saveImage( igc.getAsImage( width, height ), out, format.getName(), 1f );
127
128 }
129
130 /**
131 * Allows any resources held by this object to be released. The result of calling any other
132 * method subsequent to a call to this method is undefined. It is important for applications to
133 * call this method when they know they will no longer be using this
134 * <code>GridCoverageWriter</code>. Otherwise, the writer may continue to hold on to
135 * resources indefinitely.
136 *
137 * @throws IOException
138 * if an error occured while disposing resources (for example while flushing data
139 * and closing a file).
140 */
141 public void dispose()
142 throws IOException {
143 ( (OutputStream) destination ).close();
144 }
145
146 }