Application: gvSIG desktop » gvSIG raster

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

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

 *

 * Name:     LTIImageStage.java

 * Project:  JMRSID. Interface java to mrsid (Lizardtech).

 * Purpose:   

 * 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 que a�ade funcionalidad para la decodificaci�n desde una imagen.

 * @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 LTIImageStage extends LTIImage{

        private native int readNat(long cPtr, long cPtrscene, long cPtrobj_scenebuffer, long cPtrbuffer, LTISceneBuffer buffer);

        private native void readSceneNat(long cPtr, double x, double y, double w, double h, double mag, long reader, int wImg, int hImg, boolean flag, LTISceneBuffer buffer);

        private native void FreeLTIImageStageNat(long cPtr);

        public LTIImageStage(){}

        /**

         * Constructor

         * @param cPtr        direcci�n de memoria al objeto LTIImageStage de C. 

         */

        public LTIImageStage(long cPtr){

                this.cPtr=cPtr;

        }

        /**

         * Destructor 

         */

        protected void finalize(){

                if(cPtr != 0)

                        FreeLTIImageStageNat(cPtr);

        }

        /**

         * Lee una escena desde una imagen.

         * @throws MrSIDException

         * @param scene        Objeto escena a leer

         * @param buffer        buffer sobre el cual se almacenan los datos leidos

         */

        public void read(LTIScene scene,LTISceneBuffer buffer)throws MrSIDException{

                if(scene==null || buffer==null)

                        throw new MrSIDException("Los argumentos no pueden ser nulos");

                if (cPtr == 0)

                        throw new MrSIDException("No se puede acceder al dato");

                int res = readNat(cPtr,scene.cPtr,buffer.cPtr,buffer.cPtrbuffer, buffer);

                if(res!=0)

                        throw new MrSIDException("En el m�todo read se ha devuelto un c�digo "+res);

        }

        /**

         * Lee una escena desde una imagen.

         * @throws MrSIDException

         */

        public LTISceneBuffer readScene(double x, double y, double w, double h, double mag, MrSIDImageReader reader, int wImg, int hImg, boolean flag)throws MrSIDException{

                LTISceneBuffer sbuf = new LTISceneBuffer(wImg, hImg, true);

                readSceneNat(cPtr, x, y, w, h, mag, reader.getPtr(), wImg, hImg, flag, sbuf);

                return sbuf;

        }

}