root / trunk / libraries / libRaster / src / org / gvsig / raster / dataset / io / GdalDriver.java @ 21800
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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 java.io.BufferedReader; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import java.io.FileReader; |
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import java.io.IOException; |
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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.BandAccessException; |
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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.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.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", "jpeg", 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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extensionPoints.add("RasterReader", "hdr", GdalDriver.class); |
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extensionPoints.add("RasterReader", "raw", GdalDriver.class); |
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} |
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/**
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* Constructor del driver de Gdal. Crea las referencias al fichero y carga
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* las estructuras con la informaci?n y los metadatos.
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* @param proj Proyecci?n
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* @param param Parametros de carga
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* @throws NotSupportedExtensionException
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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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try {
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if(param instanceof String) { |
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setParam(translateFileName((String)param));
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validRmf(((String)param));
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file = new GdalNative(translateFileName((String)param)); |
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setColorTable(file.palette); |
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noData = file.getNoDataValue(); |
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noDataEnabled = file.existsNoDataValue(); |
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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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setParam(param); |
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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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int[] dt = new int[file.getDataType().length]; |
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for (int i = 0; i < dt.length; i++) |
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dt[i] = RasterUtilities.getRasterBufTypeFromGdalType(file.getDataType()[i]); |
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setDataType(dt); |
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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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* Comprueba si el fichero abierto es un RasterMetaFile o una imagen
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* raster.
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* @throws GdalException
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*/
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private void validRmf(String file) throws GdalException { |
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if(file.endsWith(".rmf")) { |
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File f = new File(file); |
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FileReader fr;
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try {
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fr = new FileReader(f); |
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BufferedReader br = new BufferedReader(fr); |
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char[] buffer = new char[5]; |
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br.read(buffer); |
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StringBuffer st = new StringBuffer(new String(buffer)); |
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if(st.toString().equals("<?xml")) |
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throw new GdalException("RasterMetaFile"); |
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} catch (FileNotFoundException e) { |
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throw new GdalException("File Not Found"); |
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} catch (IOException e) { |
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throw new GdalException(""); |
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} |
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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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* (non-Javadoc)
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* @see org.gvsig.raster.dataset.RasterDataset#translateFileName(java.lang.String)
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*/
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public String translateFileName(String fileName) { |
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if(fileName.endsWith("hdr")) |
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return fileName.substring(0, fileName.lastIndexOf(".")); |
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return fileName;
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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) |
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throws InvalidSetViewException, FileNotOpenException, RasterDriverException, InterruptedException { |
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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) throws InterruptedException, RasterDriverException { |
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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 (GdalException e) {
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throw new RasterDriverException("Error reading data"); |
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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) throws InterruptedException, RasterDriverException { |
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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 (GdalException e) {
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throw new RasterDriverException("Error reading data"); |
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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) throws InterruptedException, RasterDriverException { |
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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 (GdalException e) {
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throw new RasterDriverException("Error reading data"); |
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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) throws InterruptedException, RasterDriverException { |
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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 (GdalException e) {
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throw new RasterDriverException("Error reading data"); |
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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) throws InterruptedException, RasterDriverException { |
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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 (GdalException e) {
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throw new RasterDriverException("Error reading data"); |
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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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* Asigna el objeto que contiene que contiene la interpretaci?n de
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* color por banda
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* @param DatasetColorInterpretation
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*/
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| 421 |
public void setColorInterpretation(DatasetColorInterpretation colorInterpretation){ |
| 422 |
if(file != null) |
| 423 |
file.colorInterpr = colorInterpretation; |
| 424 |
} |
| 425 |
|
| 426 |
/**
|
| 427 |
* Obtiene el objeto que contiene el estado de la transparencia
|
| 428 |
*/
|
| 429 |
public Transparency getTransparencyDatasetStatus() { |
| 430 |
return file.fileTransparency;
|
| 431 |
} |
| 432 |
|
| 433 |
/**
|
| 434 |
* Obtiene el flag que dice si la imagen est? o no georreferenciada
|
| 435 |
* @return true si est? georreferenciada y false si no lo est?.
|
| 436 |
*/
|
| 437 |
public boolean isGeoreferenced() { |
| 438 |
if(file != null) |
| 439 |
return file.georeferenced;
|
| 440 |
else
|
| 441 |
return false; |
| 442 |
} |
| 443 |
|
| 444 |
/**
|
| 445 |
* Informa de si el driver ha supersampleado en el ?ltimo dibujado. Es el driver el que colocar?
|
| 446 |
* el valor de esta variable cada vez que dibuja.
|
| 447 |
* @return true si se ha supersampleado y false si no se ha hecho.
|
| 448 |
*/
|
| 449 |
public boolean isSupersampling() { |
| 450 |
if(file != null) |
| 451 |
return file.isSupersampling;
|
| 452 |
else
|
| 453 |
return false; |
| 454 |
} |
| 455 |
|
| 456 |
public GdalNative getNative(){
|
| 457 |
return file;
|
| 458 |
} |
| 459 |
|
| 460 |
/**
|
| 461 |
* Obtiene el nombre del driver
|
| 462 |
*/
|
| 463 |
public String getName() { |
| 464 |
return "gvSIG Gdal Raster Driver"; |
| 465 |
} |
| 466 |
|
| 467 |
/*
|
| 468 |
* (non-Javadoc)
|
| 469 |
* @see org.gvsig.raster.driver.GeoData#getStringProjection()
|
| 470 |
*/
|
| 471 |
public String getWktProjection() throws RasterDriverException { |
| 472 |
try {
|
| 473 |
return file.getProjectionRef();
|
| 474 |
} catch (GdalException e) {
|
| 475 |
throw new RasterDriverException("Error getting projection"); |
| 476 |
} |
| 477 |
} |
| 478 |
|
| 479 |
public void reProject(ICoordTrans rp) { |
| 480 |
|
| 481 |
} |
| 482 |
|
| 483 |
/*
|
| 484 |
* (non-Javadoc)
|
| 485 |
* @see org.gvsig.raster.dataset.RasterDataset#setAffineTransform(java.awt.geom.AffineTransform)
|
| 486 |
*/
|
| 487 |
public void setAffineTransform(AffineTransform t){ |
| 488 |
super.setAffineTransform(t);
|
| 489 |
file.setExternalTransform(t); |
| 490 |
} |
| 491 |
|
| 492 |
/*
|
| 493 |
* (non-Javadoc)
|
| 494 |
* @see org.gvsig.raster.dataset.RasterDataset#getOverviewCount(int)
|
| 495 |
*/
|
| 496 |
public int getOverviewCount(int band) throws BandAccessException, RasterDriverException { |
| 497 |
if(band >= getBandCount())
|
| 498 |
throw new BandAccessException("Wrong band"); |
| 499 |
try {
|
| 500 |
return file.getRasterBand(band + 1).getOverviewCount(); |
| 501 |
} catch (GdalException e) {
|
| 502 |
throw new RasterDriverException(""); |
| 503 |
} |
| 504 |
} |
| 505 |
|
| 506 |
/*
|
| 507 |
* (non-Javadoc)
|
| 508 |
* @see org.gvsig.raster.dataset.RasterDataset#getOverviewWidth(int, int)
|
| 509 |
*/
|
| 510 |
public int getOverviewWidth(int band, int overview) throws BandAccessException, RasterDriverException { |
| 511 |
if (band >= getBandCount())
|
| 512 |
throw new BandAccessException("Wrong band"); |
| 513 |
try {
|
| 514 |
if (overview >= file.getRasterBand(band + 1).getOverviewCount()) |
| 515 |
throw new BandAccessException("Wrong overview count"); |
| 516 |
return file.getRasterBand(band + 1).getOverview(overview).getRasterBandXSize(); |
| 517 |
} catch (GdalException e) {
|
| 518 |
throw new RasterDriverException(""); |
| 519 |
} |
| 520 |
} |
| 521 |
|
| 522 |
/*
|
| 523 |
* (non-Javadoc)
|
| 524 |
* @see org.gvsig.raster.dataset.RasterDataset#getOverviewWidth(int, int)
|
| 525 |
*/
|
| 526 |
public int getOverviewHeight(int band, int overview) throws BandAccessException, RasterDriverException { |
| 527 |
if (band >= getBandCount())
|
| 528 |
throw new BandAccessException("Wrong band"); |
| 529 |
try {
|
| 530 |
if (overview >= file.getRasterBand(band + 1).getOverviewCount()) |
| 531 |
throw new BandAccessException("Wrong overview count"); |
| 532 |
return file.getRasterBand(band + 1).getOverview(overview).getRasterBandYSize(); |
| 533 |
} catch (GdalException e) {
|
| 534 |
throw new RasterDriverException(""); |
| 535 |
} |
| 536 |
} |
| 537 |
|
| 538 |
/*
|
| 539 |
* (non-Javadoc)
|
| 540 |
* @see org.gvsig.raster.dataset.RasterDataset#overviewsSupport()
|
| 541 |
*/
|
| 542 |
public boolean overviewsSupport() { |
| 543 |
return true; |
| 544 |
} |
| 545 |
|
| 546 |
/*
|
| 547 |
* (non-Javadoc)
|
| 548 |
* @see org.gvsig.raster.dataset.RasterDataset#isReproyectable()
|
| 549 |
*/
|
| 550 |
public boolean isReproyectable() { |
| 551 |
return true; |
| 552 |
} |
| 553 |
} |