root / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / io / GdalDriver.java @ 12494
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.dataset.io; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.raster.dataset.BandList; |
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import org.gvsig.raster.dataset.FileNotOpenException; |
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import org.gvsig.raster.dataset.GeoInfo; |
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import org.gvsig.raster.dataset.IBuffer; |
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import org.gvsig.raster.dataset.InvalidSetViewException; |
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import org.gvsig.raster.dataset.NotSupportedExtensionException; |
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import org.gvsig.raster.dataset.RasterDataset; |
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import org.gvsig.raster.dataset.RasterDriverException; |
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import org.gvsig.raster.dataset.io.rmf.ParsingException; |
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import org.gvsig.raster.dataset.properties.DatasetColorInterpretation; |
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import org.gvsig.raster.dataset.properties.DatasetMetadata; |
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import org.gvsig.raster.datastruct.ColorTable; |
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import org.gvsig.raster.datastruct.Extent; |
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import org.gvsig.raster.datastruct.Transparency; |
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import org.gvsig.raster.util.RasterUtilities; |
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import org.gvsig.raster.util.extensionPoints.ExtensionPoints; |
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import org.gvsig.raster.util.extensionPoints.ExtensionPointsSingleton; |
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import es.gva.cit.jgdal.GdalException; |
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/**
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* Clase que representa al driver de acceso a datos de gdal.
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* @author Luis W. Sevilla
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class GdalDriver extends RasterDataset { |
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public final static int BAND_HEIGHT = 64; |
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protected GdalNative file = null; |
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public GdalDriver(){super(null, null);} |
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private Extent viewRequest = null; |
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public static void register() { |
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ExtensionPoints extensionPoints = ExtensionPointsSingleton.getInstance(); |
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extensionPoints.add("RasterReader", "bmp", GdalDriver.class); |
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extensionPoints.add("RasterReader", "gif", GdalDriver.class); |
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extensionPoints.add("RasterReader", "tif", GdalDriver.class); |
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extensionPoints.add("RasterReader", "tiff",GdalDriver.class); |
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extensionPoints.add("RasterReader", "jpg", GdalDriver.class); |
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extensionPoints.add("RasterReader", "png", GdalDriver.class); |
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extensionPoints.add("RasterReader", "vrt", GdalDriver.class); |
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extensionPoints.add("RasterReader", "dat", GdalDriver.class); // Envi |
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extensionPoints.add("RasterReader", "lan", GdalDriver.class); // Erdas |
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extensionPoints.add("RasterReader", "gis", GdalDriver.class); // Erdas |
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extensionPoints.add("RasterReader", "img", GdalDriver.class); // Erdas |
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extensionPoints.add("RasterReader", "pix", GdalDriver.class); // PCI Geomatics |
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extensionPoints.add("RasterReader", "aux", GdalDriver.class); // PCI Geomatics |
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extensionPoints.add("RasterReader", "adf", GdalDriver.class); // ESRI Grids |
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extensionPoints.add("RasterReader", "mpr", GdalDriver.class); // Ilwis |
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extensionPoints.add("RasterReader", "mpl", GdalDriver.class); // Ilwis |
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extensionPoints.add("RasterReader", "map", GdalDriver.class); // PC Raster |
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extensionPoints.add("RasterReader", "asc", GdalDriver.class); |
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extensionPoints.add("RasterReader", "pgm", GdalDriver.class); //Ficheros PNM en escala de grises |
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extensionPoints.add("RasterReader", "ppm", GdalDriver.class); //Ficheros PNM en RGB |
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extensionPoints.add("RasterReader", "rst", GdalDriver.class); //IDRISIS |
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extensionPoints.add("RasterReader", "rmf", GdalDriver.class); //Raster Matrix Format |
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extensionPoints.add("RasterReader", "nos", GdalDriver.class); |
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extensionPoints.add("RasterReader", "kap", GdalDriver.class); |
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} |
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public GdalDriver(IProjection proj, Object param)throws NotSupportedExtensionException { |
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super(proj, param);
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setParam(param); |
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extent = new Extent();
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try {
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if(param instanceof String) { |
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file = new GdalNative(((String)param)); |
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load(); |
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}else {
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//TODO: FUNCIONALIDAD: Formatos gestionados por gdal que no tienen extensi?n. Estos tendr?n un objeto IRegistrableRasterFormat Por ej: Grass
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} |
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bandCount = file.getRasterCount(); |
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} catch (GdalException e) {
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e.printStackTrace(); |
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throw new NotSupportedExtensionException("Extension not supported"); |
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} catch(Exception e) { |
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System.out.println("Error en GdalOpen"); |
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e.printStackTrace(); |
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file = null;
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} |
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//Obtenemos el tipo de dato de gdal y lo convertimos el de RasterBuf
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setDataType(RasterUtilities.getRasterBufTypeFromGdalType(file.getDataType())); |
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super.init();
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try {
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loadFromRmf(getRmfBlocksManager()); |
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} catch (ParsingException e) {
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//No lee desde rmf
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} |
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} |
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/**
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* Obtenemos o calculamos el extent de la imagen.
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*/
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public GeoInfo load() {
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extent = new Extent(file.bBoxRot.minX, file.bBoxRot.minY, file.bBoxRot.maxX, file.bBoxRot.maxY);
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requestExtent = new Extent(file.bBoxWithoutRot.minX, file.bBoxWithoutRot.minY, file.bBoxWithoutRot.maxX, file.bBoxWithoutRot.maxY);
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return this; |
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} |
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/**
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* Cierra el fichero de imagen
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*/
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public void close() { |
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try {
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if(file != null){ |
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file.close(); |
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file = null;
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} |
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} catch (GdalException e) {
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e.printStackTrace(); |
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} |
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} |
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/**
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* Asigna el extent de la vista actual. existe un fichero .rmf debemos hacer una transformaci?n
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* de la vista asignada ya que la petici?n viene en coordenadas del fichero .rmf y la vista (v)
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* ha de estar en coordenadas del fichero.
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*/
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public void setView(Extent e) { |
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if(rmfExists) {
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Point2D.Double petInit = null, petEnd = null; |
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try {
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petInit = new Point2D.Double(e.minX(), e.maxY()); |
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petEnd = new Point2D.Double(e.maxX(), e.minY()); |
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transformRMF.inverseTransform(petInit, petInit); |
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transformRMF.inverseTransform(petEnd, petEnd); |
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transformTFW.transform(petInit, petInit); |
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transformTFW.transform(petEnd, petEnd); |
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} catch(NoninvertibleTransformException ex) { |
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} |
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if(!file.georeferenced) {
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double h = file.bBoxWithoutRot.maxY - file.bBoxWithoutRot.minY;
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viewRequest = new Extent(petInit.getX(), h - petInit.getY(), petEnd.getX(), h - petEnd.getY());
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} else
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viewRequest = new Extent(petInit.getX(), petInit.getY(), petEnd.getX(), petEnd.getY());
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}else
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viewRequest = new Extent(e.minX(), e.minY(), e.maxX(), e.maxY());
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} |
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/**
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* Calcula la transformaci?n que se produce sobre la vista cuando la imagen tiene un fichero .rmf
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* asociado. En Gdal el origen de coordenadas en Y es el valor m?nimo y crece hasta el m?ximo. De la
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* misma forma calcula la matriz de transformaci?n de la cabecera del fichero o del world file asociado
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* @param originX Origen de la imagen en la coordenada X
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* @param originY Origen de la imagen en la coordenada Y
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*/
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public void setExtentTransform(double originX, double originY, double psX, double psY) { |
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transformRMF.setToTranslation(originX, originY); |
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transformRMF.scale(psX, psY); |
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if(file.trans != null){ |
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transformTFW.setToTranslation(file.trans.adfgeotransform[0], file.trans.adfgeotransform[3]); |
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transformTFW.scale(file.trans.adfgeotransform[1], file.trans.adfgeotransform[5]); |
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} |
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} |
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/**
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* Obtiene extent de la vista actual
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*/
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public Extent getView() {
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return viewRequest;
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} |
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/**
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* Obtiene la anchura del fichero
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*/
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public int getWidth() { |
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return file.width;
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} |
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/**
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* Obtiene la altura del fichero
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*/
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public int getHeight() { |
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return file.height;
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} |
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/**
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* Obtiene la orientaci?n de la imagen a partir del signo del tama?o de pixel para poder
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* asignarlo en el setView. Esto es util para poder conocer como debe leerse la image,
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* de abajo a arriba, de arriba a abajo, de izquierda a derecha o de derecha a izquierda.
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* La posici?n habitual es la que el pixel size en X es positivo y en Y negativo leyendose
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* en este caso las X de menor a mayor y las Y de mayor a menor. Los casos posibles son:
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* <UL>
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* <LI><B>X > 0; Y < 0;</B> {true, false}</LI>
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* <LI><B>X > 0; Y > 0;</B> {true, true}</LI>
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* <LI><B>X < 0; Y > 0;</B> {false, true}</LI>
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* <LI><B>X < 0; Y < 0;</B> {false, false}</LI>
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* </UL>
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*
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* @return
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*/
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private boolean[] getOrientation(){ |
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boolean[] orientation = {true, false}; |
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if(!rmfExists){
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if(file.trans != null && file.trans.adfgeotransform != null && file.trans.adfgeotransform[5] > 0) |
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orientation[1] = true; |
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if(file.trans != null && file.trans.adfgeotransform != null && file.trans.adfgeotransform[1] < 0) |
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orientation[0] = false; |
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}else{
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if(rmfTransform.getScaleY() > 0) |
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orientation[1] = true; |
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if(rmfTransform.getScaleX() < 0) |
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orientation[0] = false; |
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} |
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return orientation;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.GeoRasterFile#readCompletetLine(int, int)
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*/
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public Object readCompleteLine(int line, int band)throws InvalidSetViewException, FileNotOpenException, RasterDriverException { |
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if(line > this.getHeight() || band > this.getBandCount()) |
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throw new InvalidSetViewException("Request out of grid"); |
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try{
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return file.readCompleteLine(line, band);
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}catch(GdalException e){
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throw new RasterDriverException("Error reading data from Gdal library"); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.RasterDataset#readBlock(int, int)
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*/
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public Object readBlock(int pos, int blockHeight) throws InvalidSetViewException, FileNotOpenException, RasterDriverException { |
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if(pos < 0) |
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throw new InvalidSetViewException("Request out of grid"); |
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if((pos + blockHeight) > getHeight())
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blockHeight = Math.abs(getHeight() - pos);
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try{
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return file.readBlock(pos, blockHeight);
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}catch(GdalException e){
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throw new RasterDriverException("Error reading data from Gdal library"); |
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} |
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} |
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/* (non-Javadoc)
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* @see org.cresques.io.GeoRasterFile#getData(int, int, int)
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*/
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public Object getData(int x, int y, int band)throws InvalidSetViewException, FileNotOpenException, RasterDriverException{ |
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if(file != null){ |
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if(x < 0 || y < 0 || x >= file.width || y >= file.height) |
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throw new InvalidSetViewException("Request out of grid"); |
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Object[] data = file.getData(x, y); |
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return data[band];
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} |
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throw new FileNotOpenException("GdalNative not exist"); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.GeoRasterFile#getWindowRaster(double, double, double, double, org.gvsig.fmap.driver.BandList, org.gvsig.fmap.driver.IBuffer)
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*/
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public IBuffer getWindowRaster(double x, double y, double w, double h, BandList bandList, IBuffer rasterBuf, boolean adjustToExtent) { |
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Extent selectedExtent = new Extent(x, y, x + w, y - h);
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setView(selectedExtent); |
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try {
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file.readWindow(rasterBuf, bandList, viewRequest.minX(), viewRequest.maxY(), viewRequest.maxX(), viewRequest.minY(), rasterBuf.getWidth(), rasterBuf.getHeight(), adjustToExtent); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return rasterBuf;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.GeoRasterFile#getWindowRaster(double, double, double, double, int, int, org.gvsig.fmap.driver.BandList, org.gvsig.fmap.driver.IBuffer)
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*/
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public IBuffer getWindowRaster(double minX, double minY, double maxX, double maxY, int bufWidth, int bufHeight, BandList bandList, IBuffer rasterBuf, boolean adjustToExtent) { |
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Extent selectedExtent = new Extent(minX, minY, maxX, maxY);
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setView(selectedExtent); |
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double width = 0; |
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double height = 0; |
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if(getTransform() != null){ |
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width = (double)(Math.abs(viewRequest.width() / getTransform()[1]));//(int)(selectedExtent.width() * file.width) / extent.width(); |
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height = (double)(Math.abs(viewRequest.height() / getTransform()[5])); |
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}else{
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width = (double)Math.abs(viewRequest.width()); |
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height = (double)Math.abs(viewRequest.height()); |
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} |
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try {
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file.readWindow(rasterBuf, bandList, viewRequest.minX(), viewRequest.maxY(), viewRequest.maxX(), viewRequest.minY(), width, height, bufWidth, bufHeight, adjustToExtent); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return rasterBuf;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.GeoRasterFile#getWindowRaster(int, int, int, int, org.gvsig.fmap.driver.BandList, org.gvsig.fmap.driver.IBuffer)
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*/
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public IBuffer getWindowRaster(int x, int y, int w, int h, BandList bandList, IBuffer rasterBuf) { |
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try {
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setView( |
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new Extent( RasterUtilities.getMapRectFromPxRect(getExtent().toRectangle2D(),
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getWidth(), |
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getHeight(), |
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new Rectangle2D.Double(x, y, w, h))) |
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); |
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file.readWindow(rasterBuf, bandList, x, y, w, h); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return rasterBuf;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.driver.GeoRasterFile#getWindowRaster(int, int, int, int, int, int, org.gvsig.fmap.driver.BandList, org.gvsig.fmap.driver.IBuffer)
|
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*/
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public IBuffer getWindowRaster(int x, int y, int w, int h, int bufWidth, int bufHeight, BandList bandList, IBuffer rasterBuf) { |
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try {
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setView( |
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new Extent( RasterUtilities.getMapRectFromPxRect(getExtent().toRectangle2D(),
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getWidth(), |
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getHeight(), |
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new Rectangle2D.Double(x, y, w, h))) |
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); |
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file.readWindow(rasterBuf, bandList, x, y, w, h, bufWidth, bufHeight); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return rasterBuf;
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} |
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/**
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* Devuelve el tama?o de bloque
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* @return Tama?o de bloque
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*/
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public int getBlockSize(){ |
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if(file != null) |
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return file.getBlockSize();
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else
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return 0; |
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} |
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/**
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* Obtiene el objeto que contiene los metadatos
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*/
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public DatasetMetadata getMetadata() {
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if(file != null) |
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return file.metadata;
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else
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return null; |
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} |
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/**
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* Obtiene el objeto que contiene que contiene la interpretaci?n de
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* color por banda
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* @return
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*/
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public DatasetColorInterpretation getColorInterpretation(){
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if(file != null) |
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return file.colorInterpr;
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return null; |
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} |
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|
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/**
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* Obtiene el objeto que contiene el estado de la transparencia
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*/
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public Transparency getTransparencyDatasetStatus() { |
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return file.fileTransparency;
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} |
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/**
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* Obtiene el flag que dice si la imagen est? o no georreferenciada
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* @return true si est? georreferenciada y false si no lo est?.
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*/
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public boolean isGeoreferenced() { |
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if(file != null) |
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return file.georeferenced;
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else
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return false; |
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} |
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/**
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* Obtiene el objeto que contiene la paleta de color.
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*/
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public ColorTable getColorTable() {
|
| 424 |
if(file != null) |
| 425 |
return file.palette;
|
| 426 |
else
|
| 427 |
return null; |
| 428 |
} |
| 429 |
|
| 430 |
/**
|
| 431 |
* Informa de si el driver ha supersampleado en el ?ltimo dibujado. Es el driver el que colocar?
|
| 432 |
* el valor de esta variable cada vez que dibuja.
|
| 433 |
* @return true si se ha supersampleado y false si no se ha hecho.
|
| 434 |
*/
|
| 435 |
public boolean isSupersampling() { |
| 436 |
if(file != null) |
| 437 |
return file.isSupersampling;
|
| 438 |
else
|
| 439 |
return false; |
| 440 |
} |
| 441 |
|
| 442 |
/**
|
| 443 |
* Obtiene los par?metros de la transformaci?n af?n que corresponde con los elementos de
|
| 444 |
* un fichero tfw.
|
| 445 |
* <UL>
|
| 446 |
* <LI>[1]tama?o de pixel en X</LI>
|
| 447 |
* <LI>[2]rotaci?n en X</LI>
|
| 448 |
* <LI>[4]rotaci?n en Y</LI>
|
| 449 |
* <LI>[5]tama?o de pixel en Y</LI>
|
| 450 |
* <LI>[0]origen en X</LI>
|
| 451 |
* <LI>[3]origen en Y</LI>
|
| 452 |
* </UL>
|
| 453 |
* Este m?todo debe ser reimplementado por el driver si tiene esta informaci?n. En principio
|
| 454 |
* Gdal es capaz de proporcionarla de esta forma.
|
| 455 |
*
|
| 456 |
* En caso de que exista fichero .rmf asociado al raster pasaremos de la informaci?n de georreferenciaci?n
|
| 457 |
* del .tfw y devolveremos la que est? asociada al rmf
|
| 458 |
* @return vector de double con los elementos de la transformaci?n af?n.
|
| 459 |
*/
|
| 460 |
public double[] getTransform(){ |
| 461 |
if(file != null && file.trans != null && !rmfExists()) |
| 462 |
return file.trans.adfgeotransform;
|
| 463 |
else{
|
| 464 |
if(this.rmfExists){ |
| 465 |
double[] rmfGeoref = { rmfTransform.getTranslateX(), |
| 466 |
rmfTransform.getScaleX(), |
| 467 |
rmfTransform.getShearX(), |
| 468 |
rmfTransform.getTranslateY(), |
| 469 |
rmfTransform.getShearY(), |
| 470 |
rmfTransform.getScaleY()}; |
| 471 |
return rmfGeoref;
|
| 472 |
} |
| 473 |
return null; |
| 474 |
} |
| 475 |
|
| 476 |
} |
| 477 |
|
| 478 |
/*
|
| 479 |
* (non-Javadoc)
|
| 480 |
* @see org.gvsig.fmap.driver.GeoRasterFile#rasterToWorld(java.awt.geom.Point2D)
|
| 481 |
*/
|
| 482 |
public Point2D rasterToWorld(Point2D pt) { |
| 483 |
return file.rasterToWorld(pt);
|
| 484 |
} |
| 485 |
|
| 486 |
/*
|
| 487 |
* (non-Javadoc)
|
| 488 |
* @see org.gvsig.fmap.driver.GeoRasterFile#worldToRaster(java.awt.geom.Point2D)
|
| 489 |
*/
|
| 490 |
public Point2D worldToRaster(Point2D pt){ |
| 491 |
return file.worldToRaster(pt);
|
| 492 |
} |
| 493 |
|
| 494 |
public GdalNative getNative(){
|
| 495 |
return file;
|
| 496 |
} |
| 497 |
|
| 498 |
/**
|
| 499 |
* Obtiene el nombre del driver
|
| 500 |
*/
|
| 501 |
public String getName() { |
| 502 |
return "gvSIG Gdal Raster Driver"; |
| 503 |
} |
| 504 |
|
| 505 |
/*
|
| 506 |
* (non-Javadoc)
|
| 507 |
* @see org.gvsig.raster.driver.GeoData#getStringProjection()
|
| 508 |
*/
|
| 509 |
public String getWktProjection() throws RasterDriverException{ |
| 510 |
try {
|
| 511 |
return file.getProjectionRef();
|
| 512 |
} catch (GdalException e) {
|
| 513 |
throw new RasterDriverException("Error getting projection"); |
| 514 |
} |
| 515 |
} |
| 516 |
|
| 517 |
/*
|
| 518 |
* (non-Javadoc)
|
| 519 |
* @see org.gvsig.raster.dataset.RasterDataset#setCanceled(boolean, int)
|
| 520 |
*/
|
| 521 |
public void setCanceled(boolean value, int process) { |
| 522 |
super.setCanceled(value, process);
|
| 523 |
|
| 524 |
if(process == CANCEL_READ || process == 0) |
| 525 |
file.readCancel = value; |
| 526 |
} |
| 527 |
|
| 528 |
/*
|
| 529 |
* (non-Javadoc)
|
| 530 |
* @see org.gvsig.raster.dataset.RasterDataset#isCanceled(int)
|
| 531 |
*/
|
| 532 |
public boolean isCanceled(int process) { |
| 533 |
if(process == CANCEL_READ) {
|
| 534 |
return file.readCancel;
|
| 535 |
} else
|
| 536 |
return super.isCanceled(process); |
| 537 |
} |
| 538 |
|
| 539 |
public void reProject(ICoordTrans rp) { |
| 540 |
|
| 541 |
} |
| 542 |
} |
| 543 |
|
| 544 |
|
| 545 |
|