gvsig-raster / org.gvsig.raster.gdal / tags / pre-remove-jgdal / org.gvsig.raster.gdal / org.gvsig.raster.gdal.io / src / main / java / org / gvsig / jgdal / GdalDriver.java @ 3741
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.jgdal; |
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import java.io.File; |
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import java.nio.charset.Charset; |
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import java.util.StringTokenizer; |
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import java.util.Vector; |
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import org.gdal.gdal.Dataset; |
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import org.gdal.gdal.Driver; |
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import org.gdal.gdal.gdal; |
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/**
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* Representa un driver de un tipo de im?gen
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*
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* @author Nacho Brodin (nachobrodin@gmail.com).<BR> Equipo de desarrollo gvSIG.<BR> http://www.gvsig.gva.es
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* @version 0.0
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* @link http://www.gvsig.gva.es
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*/
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public class GdalDriver{ |
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private Driver driver; |
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// private native long createCopyNat(long cPtr, String file, long src, int bstrict);
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// private native long createCopyParamsNat(long cPtr, String file, long src, int bstrict, Options opc);
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// private native long createNat(long cPtr, String filename, int nXSize, int nYSize, int nBands, int nType, Options opc);
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public GdalDriver(Driver drv) { |
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this.driver = drv;
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} |
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/**
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* Crea una copia de una im?gen a partir de un dataset de origen especificado.
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* @param file Nombre del fichero sobre el cual se guardar? la copia
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* @param src Dataset fuente a copiar
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* @param bstrict TRUE si la copia debe ser estrictamente equivalente y FALSE indica que la copia puede
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* adaptarse a las necesidades del formato de salida
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* @return Gdal Dataset de la im?gen de salida
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* @throws GdalException
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*/
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public Gdal createCopy(String file, Gdal src, boolean bstrict) throws GdalException { |
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String path = file.substring(0, file.lastIndexOf(File.separator)); |
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File f = new File(path); |
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if (!f.canWrite())
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throw new GdalException("Ruta de archivo incorrecta."); |
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f = null;
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if (src == null) |
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throw new GdalException("El objeto Gdal es null"); |
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// if (cPtr == 0)
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// throw new GdalException("No se ha podido acceder al archivo.");
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Dataset data = gdal.Open(file, bstrict ? 1 : 0); |
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Dataset copyDataset = this.driver.CreateCopy(file, data, bstrict ? 1 : 0); |
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// if (ptr == 0)
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// throw new GdalException("No se ha podido crear la copia");
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return new Gdal(copyDataset); |
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} |
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/**
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* A partir de las opciones en forma de vector de Strings pasadas por el usuario donde cada
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* elemento del vector tiene la forma VARIABLE=VALOR crea el objeto Options para que sea accesible
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* a las funciones JNI desde C.
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* @param params Vector de strigs con las opciones
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* @return Options Objeto de opciones
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*/
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private Options selectOptions(String[] params) { |
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if (params == null) |
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return null; |
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Options opc = new Options(params.length);
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StringTokenizer st;
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for (int i = 0; i < params.length; i++) { |
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st = new StringTokenizer(params[i], "="); |
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String var = st.nextToken();
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String dato = st.nextToken();
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opc.addOption(var, dato); |
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} |
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return opc;
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} |
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/**
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* Crea una copia de una im?gen a partir de un dataset de origen especificado y unos par?metros dados.
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* @param file Nombre del fichero sobre el cual se guardar? la copia
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* @param src Dataset fuente a copiar
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* @param bstrict TRUE si la copia debe ser estrictamente equivalente y FALSE indica que la copia puede
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* adaptarse a las necesidades del formato de salida
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* @param params Vector de strigs con las opciones de la copia
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* @return Gdal Dataset de la im?gen de salida
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* @throws GdalException
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*/
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public Gdal createCopy(String file, Gdal src, boolean bstrict, String[] params) throws GdalException { |
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String path = file.substring(0, file.lastIndexOf(File.separator)); |
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File f = new File(path); |
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if (!f.canWrite())
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throw new GdalException("Ruta de archivo incorrecta."); |
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f = null;
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// if (cPtr == 0)
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// throw new GdalException("No se ha podido acceder al archivo.");
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// if (src == null)
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// throw new GdalException("El objeto Gdal es null");
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Dataset data = gdal.Open(file, bstrict ? 1 : 0); |
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Dataset copyDataset = this.driver.CreateCopy(file, data, bstrict ? 1 : 0, params); |
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if (copyDataset == null) |
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throw new GdalException("No se ha podido crear la copia"); |
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return new Gdal(copyDataset); |
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} |
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/**
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* Crea un nuevo dataset con el driver actual
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*
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* @param filename Nombre del dataset a crear
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* @param nXSize Ancho en pixels
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* @param nYSize Alto en pixels
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* @param nBands N?mero de bandas
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* @param nType Tipo de raster
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* @param params lista de par?metros especificos del driver
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*/
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public Gdal create(String filename, int nXSize, int nYSize, int nBands, int nType, String[] params) throws GdalException { |
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// if (cPtr == 0)
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// throw new GdalException("No se ha podido acceder al archivo.");
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byte ptext[] = filename.getBytes(Charset.forName("ISO_8859_1")); |
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String value = new String(ptext, Charset.forName("UTF-8")); |
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Dataset data = this.driver.Create(value, nXSize, nYSize, nBands, nType, StringArrayToVector(params));
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return new Gdal(data); |
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} |
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private static Vector StringArrayToVector(String[] options) |
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{ |
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if (options == null) |
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return null; |
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Vector v = new Vector(); |
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for(int i=0;i<options.length;i++) |
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v.addElement(options[i]); |
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return v;
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} |
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} |