Application: gvSIG desktop

/**********************************************************************

 * $Id: JNIBase.java 3539 2006-01-09 12:23:20Z nacho $

 *

 * Name:     JNIBase.java

 * Project:  JMRSID. Interfaz java to MrSID (Lizardtech).

 * Purpose:  Base class for classes that use JNI.

 * Author:   Nacho Brodin, brodin_ign@gva.es

 *

 **********************************************************************/

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

*

* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

*

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

*

* For more information, contact:

*

*  Generalitat Valenciana

*   Conselleria d'Infraestructures i Transport

*   Av. Blasco Ib??ez, 50

*   46010 VALENCIA

*   SPAIN

*

*      +34 963862235

*   gvsig@gva.es

*      www.gvsig.gva.es

*

*    or

*

*   IVER T.I. S.A

*   Salamanca 50

*   46005 Valencia

*   Spain

*

*   +34 963163400

*   dac@iver.es

*/

package es.gva.cit.jmrsid;

/**

 * Clase base para todas las clases que contienen funcionalidades JNI.

 * 

 * @author Nacho Brodin <brodin_ign@gva.es>.<BR> Equipo de desarrollo gvSIG.<BR> http://www.gvsig.gva.es

 * @version 0.0

 * @link http://www.gvsig.gva.es

 */

public class JNIBase{

        protected long cPtr;

        private native int getIndexCountNat(long cPtr);

        private native int initializeNat(long cPtr);

        private native int getNumLevelsNat(long cPtr);

        private native int getWidthNat(long cPtr);

        private native int getHeightNat(long cPtr);

        private native int getStripHeightNat(long cPtr);

        private native int getNumBandsNat(long cPtr);

        private native int getColorSpaceNat(long cPtr);

        private native int getDataTypeNat(long cPtr);

        /**

         * Funci?n que sirve como base para funcionalidades de mrsid que admiten como par?metro un entero y devuelven un entero.

         * 

         * @throws MrSIDException.

         * @param msg1        Mensaje de error que se muestra cuando el puntero a objeto pasado es vacio.

         * @param msg2        Mensaje de error que se muestra cuando el resultado de la llamada a la funci?n de gdal es menor o igual que 0.

         */

        protected int baseSimpleFunction(int n,String msg1,String msg2)throws MrSIDException{

                int res = 0;

                if(cPtr <= 0)

                         throw new MrSIDException(msg1);

                switch(n){

                        case 0: res = getIndexCountNat(cPtr);break;

                        case 1: res = initializeNat(cPtr);break;

                        case 2: res = getNumLevelsNat(cPtr);break;

                        case 3: res = getWidthNat(cPtr);break;

                        case 4: res = getHeightNat(cPtr);break;

                        case 5: res = getStripHeightNat(cPtr);break;

                        case 6: res = getNumBandsNat(cPtr);break;

                        case 7: res = getColorSpaceNat(cPtr);break;

                        case 8: res = getDataTypeNat(cPtr);break;

                }

                if(res<0)

                         throw new MrSIDException(msg2);

                 else return res;

        }

        /**

         * Devuelve el puntero a memoria del objeto en C.

         */

        public long getPtr(){

                return cPtr;

        }

        /**

         * Carga de la libreria jmrsid  

         */ 

        static{

                System.loadLibrary("jmrsid");

        }

}