svn-gvsig-desktop / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / io / GdalDriver.java @ 12749
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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.AffineTransform; |
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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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try {
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if(param instanceof String) { |
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file = new GdalNative(((String)param)); |
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ownTransformation = file.getOwnTransformation(); |
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externalTransformation = (AffineTransform)ownTransformation.clone();
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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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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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viewRequest = e; |
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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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* (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.raster.dataset.RasterDataset#getWindowRaster(double, double, double, double, org.gvsig.raster.dataset.BandList, org.gvsig.raster.dataset.IBuffer)
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*/
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public IBuffer getWindowRaster(double ulx, double uly, double lrx, double lry, BandList bandList, IBuffer rasterBuf) { |
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Extent selectedExtent = new Extent(ulx, uly, lrx, lry);
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setView(selectedExtent); |
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try {
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file.readWindow(rasterBuf, bandList, viewRequest.getULX(), viewRequest.getULY(), viewRequest.getLRX(), viewRequest.getLRY(), rasterBuf.getWidth(), rasterBuf.getHeight(), true);
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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, org.gvsig.fmap.driver.BandList, org.gvsig.fmap.driver.IBuffer)
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*/
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public IBuffer getWindowRaster(double ulx, double uly, double w, double h, BandList bandList, IBuffer rasterBuf, boolean adjustToExtent) { |
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//El incremento o decremento de las X e Y depende de los signos de rotaci?n y escala en la matriz de transformaci?n. Por esto
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//tenemos que averiguar si lrx es x + w o x -w, asi como si lry es y + h o y - h
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Extent ext = getExtent(); |
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Point2D pInit = rasterToWorld(new Point2D.Double(0, 0)); |
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Point2D pEnd = rasterToWorld(new Point2D.Double(getWidth(), getHeight())); |
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double wRaster = Math.abs(pEnd.getX() - pInit.getX()); |
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double hRaster = Math.abs(pEnd.getY() - pInit.getY()); |
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double lrx = (((ext.getULX() - wRaster) > ext.maxX()) || ((ext.getULX() - wRaster) < ext.minX())) ? (ulx + w) : (ulx - w);
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double lry = (((ext.getULY() - hRaster) > ext.maxY()) || ((ext.getULY() - hRaster) < ext.minY())) ? (uly + h) : (uly - h);
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Extent selectedExtent = new Extent(ulx, uly, lrx, lry);
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setView(selectedExtent); |
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try {
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file.readWindow(rasterBuf, bandList, viewRequest.getULX(), viewRequest.getULY(), viewRequest.getLRX(), viewRequest.getLRY(), 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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Point2D ul = new Point2D.Double(viewRequest.getULX(), viewRequest.getULY()); |
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Point2D lr = new Point2D.Double(viewRequest.getLRX(), viewRequest.getLRY()); |
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ul = worldToRaster(ul); |
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lr = worldToRaster(lr); |
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width = Math.abs(lr.getX() - ul.getX());
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height = Math.abs(lr.getY() - ul.getY());
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try {
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file.readWindow(rasterBuf, bandList, viewRequest.getULX(), viewRequest.getULY(), viewRequest.getLRX(), viewRequest.getLRY(), 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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* 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() {
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if(file != null) |
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return file.palette;
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else
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return null; |
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} |
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/**
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* Informa de si el driver ha supersampleado en el ?ltimo dibujado. Es el driver el que colocar?
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* el valor de esta variable cada vez que dibuja.
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* @return true si se ha supersampleado y false si no se ha hecho.
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*/
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public boolean isSupersampling() { |
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if(file != null) |
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return file.isSupersampling;
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else
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return false; |
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} |
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public GdalNative getNative(){
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return file;
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} |
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/**
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* Obtiene el nombre del driver
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*/
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public String getName() { |
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return "gvSIG Gdal Raster Driver"; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.driver.GeoData#getStringProjection()
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*/
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public String getWktProjection() throws RasterDriverException{ |
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try {
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return file.getProjectionRef();
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} catch (GdalException e) {
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throw new RasterDriverException("Error getting projection"); |
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} |
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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#setCanceled(boolean, int)
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*/
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public void setCanceled(boolean value, int process) { |
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super.setCanceled(value, process);
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if(process == CANCEL_READ || process == 0) |
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file.readCancel = value; |
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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#isCanceled(int)
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*/
|
| 437 |
public boolean isCanceled(int process) { |
| 438 |
if(process == CANCEL_READ) {
|
| 439 |
return file.readCancel;
|
| 440 |
} else
|
| 441 |
return super.isCanceled(process); |
| 442 |
} |
| 443 |
|
| 444 |
public void reProject(ICoordTrans rp) { |
| 445 |
|
| 446 |
} |
| 447 |
|
| 448 |
/*
|
| 449 |
* (non-Javadoc)
|
| 450 |
* @see org.gvsig.raster.dataset.RasterDataset#setAffineTransform(java.awt.geom.AffineTransform)
|
| 451 |
*/
|
| 452 |
public void setAffineTransform(AffineTransform t){ |
| 453 |
super.setAffineTransform(t);
|
| 454 |
file.setExternalTransform(t); |
| 455 |
} |
| 456 |
} |
| 457 |
|
| 458 |
|
| 459 |
|