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

 * $Id: LTISceneBuffer.java 1180 2005-01-25 12:04:45Z igbrotru $

 *

 * Name:     LTISceneBuffer.java

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

 * Purpose:   

 * Author:   Nacho Brodin, brodin_ign@gva.es

 *

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

/*Copyright (C) 2004  Nacho Brodin <brodin_ign@gva.es>

 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.

 */

package es.gva.cit.jmrsid;

/**

 * @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 LTISceneBuffer extends JNIBase{

        private native long LTISceneBufferNat(long pixel,int tamx,int tamy, int flag);

        private native long LTISceneBuffer1Nat(long pixel, int totalNumCols, int totalNumRows, int colOffset, int rowOffset, int windowNumCols, int windowNumRows, int flag);

        private native void FreeLTISceneBufferNat(long cPtr_LTISceneBuffer, long cPtr_tbuffer);

        public int size;

        public byte buf1[];

        public byte buf2[];

        public byte buf3[];

        public long cPtrbuffer;

        public boolean flag;

        /**

         * Constructor 

         * 

         * @param pixel        propiedades del pixel que ser?n usadas en el buffer

         * @param totalNumCols        ancho del buffer

         * @param totalNumRows        alto del buffer

         * @param flag        Pone a null el puntero de datos si es false y llena el buffer si es true

         * @throws MrSIDException         

         */

        public LTISceneBuffer(LTIPixel pixel, int totalNumCols, int totalNumRows, boolean flag)throws MrSIDException{

                if(totalNumCols<0 || totalNumRows<0 || pixel==null)

                        throw new MrSIDException("Valores no validos para el tama?o de ventana.");

                this.cPtrbuffer=-1;

                this.flag=flag;

                //Si el flag es true reservamos memoria para el buffer

                if(flag==true){                        

                        size=totalNumCols*totalNumRows;

                        buf1=new byte[size];

                        buf2=new byte[size];

                        buf3=new byte[size];

                }

                if(flag)cPtr=LTISceneBufferNat(pixel.cPtr, totalNumCols, totalNumRows, 1);

                else cPtr=LTISceneBufferNat(pixel.cPtr, totalNumCols, totalNumRows, 0);

                if(cPtr<0)

                        throw new MrSIDException("Error en el constructor nativo LTIScene.");

        }

        /**

         * Constructor 

         * 

         * @param pixel        propiedades del pixel que ser?n usadas en el buffer

         * @param totalNumCols        ancho del buffer

         * @param totalNumRows        alto del buffer

         * @param colOffset posici?n X de la ventana

         * @param rowOffset posici?n Y de la ventana

         * @param windowNumCols Ancho de la ventana

         * @param windowNumRows Alto de la ventana

         * @param flag        Pone a null el puntero de datos si es false y llena el buffer si es true

         * @throws MrSIDException         

         */

        public LTISceneBuffer(LTIPixel pixel, int totalNumCols, int totalNumRows, int colOffset, int rowOffset, int windowNumCols, int windowNumRows, boolean flag)throws MrSIDException{

                if(totalNumCols<0 || totalNumRows<0 || colOffset<0 || rowOffset<0 || windowNumCols<0 || windowNumRows<0 || pixel==null)

                        throw new MrSIDException("Valores no validos para el tama?o de ventana.");

                this.cPtrbuffer=-1;

                this.flag=flag;

                //Si el flag es 1 reservamos memoria para el buffer

                if(flag==true){                        

                        size=totalNumCols*totalNumRows;

                        buf1=new byte[size];

                        buf2=new byte[size];

                        buf3=new byte[size];

                }

                if(flag)cPtr=LTISceneBuffer1Nat(pixel.cPtr, totalNumCols, totalNumRows, colOffset, rowOffset, windowNumCols, windowNumRows, 1);

                else cPtr=LTISceneBuffer1Nat(pixel.cPtr, totalNumCols, totalNumRows, colOffset, rowOffset, windowNumCols, windowNumRows, 0);

                if(cPtr<0)

                        throw new MrSIDException("Error en el constructor nativo LTIScene.");

        }

        /**

         * Destructor 

         */

        public void finalize(){

                System.out.println("Finalizando LTIsceneBuffer ..."+cPtrbuffer);

                if(cPtr > 0)

                        FreeLTISceneBufferNat(cPtr, cPtrbuffer);

        }

}