/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2007-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*/
package org.geotools.coverageio.gdal.mrsid;
import it.geosolutions.imageio.plugins.mrsid.MrSIDImageReaderSpi;
import java.io.IOException;
import java.util.logging.Logger;
import javax.imageio.ImageReader;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverageio.gdal.BaseGDALGridCoverage2DReader;
import org.geotools.data.DataSourceException;
import org.geotools.factory.Hints;
import org.opengis.coverage.grid.Format;
import org.opengis.coverage.grid.GridCoverageReader;
/**
* This class can read a MrSID data source and create a {@link GridCoverage2D}
* from the data.
*
* @author Daniele Romagnoli, GeoSolutions
* @author Simone Giannecchini (simboss), GeoSolutions
* @since 2.5.x
*
* @source $URL$
*/
public final class MrSIDReader extends BaseGDALGridCoverage2DReader implements
GridCoverageReader {
/** Logger. */
@SuppressWarnings("unused")
private final static Logger LOGGER = org.geotools.util.logging.Logging
.getLogger(MrSIDReader.class);
private final static String worldFileExt = ".sdw";
/**
* Creates a new instance of a {@link MrSIDReader}. I assume nothing about
* file extension.
*
* @param input
* Source object for which we want to build a
* {@link MrSIDReader}.
* @throws DataSourceException
*/
public MrSIDReader(Object input) throws DataSourceException {
this(input, null);
}
/**
* Creates a new instance of a {@link MrSIDReader}. I assume nothing about
* file extension.
*
* @param input
* Source object for which we want to build a
* {@link MrSIDReader}.
* @param hints
* Hints to be used by this reader throughout his life.
* @throws DataSourceException
*/
public MrSIDReader(Object input, final Hints hints)
throws DataSourceException {
super(input, hints, worldFileExt, new MrSIDImageReaderSpi());
}
/**
* Setting Envelope, GridRange and CRS from the given {@code ImageReader}
*
* @param reader
* the {@code ImageReader} from which to retrieve metadata
* (if available) for setting properties
* @throws IOException
*/
@Override
protected void setCoverageProperties(ImageReader reader) throws IOException {
// //
//
// Due to a MrSID encoder (old version) bug , georeferencing information
// could be wrong. Hence we first attempt to get information using
// alternative ways (worldfile, common metadata) and then try setting
// empty fields with specific metadata.
//
// //
super.setCoverageProperties(reader);
if (this.originalGridRange != null &&this.crs != null
&& originalEnvelope != null)
return;
// Uncomment this section in case we stop using the default CRS.
// The CRS information coming from GDAL are computed from the
// same MrSID metadata.
// final IIOMetadata metadata = reader.getImageMetadata(0);
// if (!(metadata instanceof GDALCommonIIOImageMetadata)) {
// throw new DataSourceException(
// "Unexpected error! Metadata should be an instance of the expected class:"
// + " GDALCommonIIOImageMetadata.");
// }
// final GDALCommonIIOImageMetadata gridMetadata = (GDALCommonIIOImageMetadata) metadata;
//
// // getting metadata
// final Node root = gridMetadata
// .getAsTree(MrSIDIIOImageMetadata.mrsidImageMetadataName);
//
// // //
// //
// // getting Image Properties
// //
// // //
// Node child = root.getFirstChild();
// NamedNodeMap attributes = child.getAttributes();
// if (getCoverageGridRange() == null) {
// final String sWidth = attributes.getNamedItem("IMAGE__WIDTH")
// .getNodeValue();
// final String sHeight = attributes.getNamedItem("IMAGE__HEIGHT")
// .getNodeValue();
//
// if ((sHeight != null) && (sWidth != null)
// && !(sWidth.trim().equalsIgnoreCase(""))
// && !(sHeight.trim().equalsIgnoreCase(""))) {
// final int width = Integer.parseInt(sWidth);
// final int height = Integer.parseInt(sHeight);
// setCoverageGridRange(new GeneralGridRange(new Rectangle(0, 0,
// width, height)));
// }
// }
// // //
// //
// // getting GeoReferencing Properties
// //
// // //
// child = child.getNextSibling();
// attributes = child.getAttributes();
//
// if (getCoverageEnvelope() == null) {
// final String xResolution = attributes.getNamedItem(
// "IMAGE__X_RESOLUTION").getNodeValue();
// final String yResolution = attributes.getNamedItem(
// "IMAGE__Y_RESOLUTION").getNodeValue();
// final String xyOrigin = attributes.getNamedItem("IMAGE__XY_ORIGIN")
// .getNodeValue();
//
// if ((xResolution != null) && (yResolution != null)
// && (xyOrigin != null)
// && !(xResolution.trim().equalsIgnoreCase(""))
// && !(yResolution.trim().equalsIgnoreCase(""))
// && !(xyOrigin.trim().equalsIgnoreCase(""))) {
// double cellsizeX = Double.parseDouble(xResolution);
// double cellsizeY = Double.parseDouble(yResolution);
// final String[] origins = xyOrigin.split(",");
// double xul = Double.parseDouble(origins[0]);
// double yul = Double.parseDouble(origins[1]);
//
// xul -= (cellsizeX / 2d);
// yul -= (cellsizeY / 2d);
//
// final double xll = xul;
// final double yur = yul;
// final int width = getCoverageGridRange().getLength(0);
// final int height = getCoverageGridRange().getLength(1);
// final double xur = xul + (cellsizeX * width);
// final double yll = yul - (cellsizeY * height);
// setCoverageEnvelope(new GeneralEnvelope(
// new double[] { xll, yll }, new double[] { xur, yur }));
// }
// }
// // Retrieving projection Information
// if (getCoverageCRS() == null) {
// Node attribute = attributes.getNamedItem("IMG__WKT");
//
// if (attribute != null) {
// String wkt = attribute.getNodeValue();
//
// if ((wkt != null) && (wkt.trim().length() > 0)) {
// try {
// setCoverageCRS(CRS.parseWKT(wkt));
// } catch (FactoryException fe) {
// if (LOGGER.isLoggable(Level.FINE)) {
// LOGGER.log(Level.FINE, "Unable to get CRS from"
// + " WKT contained in metadata."
// + " Looking for a PRJ.");
// }
//
// // unable to get CRS from WKT
// setCoverageCRS(null);
// }
// }
// }
// }
}
/**
* @see org.opengis.coverage.grid.GridCoverageReader#getFormat()
*/
public Format getFormat() {
return new MrSIDFormat();
}
}