Application: gvSIG desktop » gvSIG raster

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

 * $Id: ltiscenebuffer.cpp 3539 2006-01-09 12:23:20Z nacho $

 *

 * Name:     ltiscenebuffer.c

 * Project:  JMRSID. Interfaz 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

*/

#include <jni.h>

#include <malloc.h>

#include "es_gva_cit_jmrsid_LTISceneBuffer.h"

#include "es_gva_cit_jmrsid_JNIBase.h"

#include "lti_pixel.h"

#include "lti_sceneBuffer.h"

#include "../include/jmrsid.h"

LT_USE_NAMESPACE(LizardTech);

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

//                                                 Constructor LTISceneBuffer

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

JNIEXPORT jlong JNICALL Java_es_gva_cit_jmrsid_LTISceneBuffer_LTISceneBufferNat

  (JNIEnv *env, jobject obj, jlong cPtr, jint tamx, jint tamy, jint flag){

          LTISceneBuffer *buffer=NULL;

          LTIPixel *pixel  = (LTIPixel *) 0 ;

          jclass class_mrsidbuffer;

          jfieldID id_ptrbuffer;

          t_buffer *datos_ventana = (t_buffer*)malloc(sizeof(t_buffer));

        jlong jbuf = 0 ;

        jlong jstructbuf = 0 ;

          pixel = *(LTIPixel **)&cPtr;

          //Si el flag es 1 necesitamos un buffer.

          if(pixel!=NULL) {

                  if(flag>=1) {

                          //Creamos el buffer

                          datos_ventana->siz = tamx * tamy;

                    datos_ventana->membuf = new lt_uint8[datos_ventana->siz*3];

                           datos_ventana->bufs[0] = datos_ventana->membuf;

                           datos_ventana->bufs[1] = datos_ventana->membuf+datos_ventana->siz;

                           datos_ventana->bufs[2] = datos_ventana->membuf+datos_ventana->siz*2;

                            //Obtenemos el id del campo que tiene el buffer de la clase LTISceneBuffer de java

                          class_mrsidbuffer = env->GetObjectClass(obj);

                          id_ptrbuffer = env->GetFieldID( class_mrsidbuffer, "cPtrbuffer", "J");

                          //Llamamos al constructor pasandole el buffer creado

                          buffer=new LTISceneBuffer(*pixel,tamx,tamy,datos_ventana->bufs);

                          //Obtenemos los punteros a objeto buffer y a la estructura con el buffer de memoria

                          *(t_buffer **)&jstructbuf = datos_ventana;

                          //Guardamos el id del buffer en la parte java

                          env->SetLongField(obj, id_ptrbuffer, jstructbuf); 

                  }else

                          buffer=new LTISceneBuffer(*pixel,tamx,tamy,NULL);        

                *(LTISceneBuffer **)&jbuf = buffer;

          }else 

                  return -1;

          return jbuf;

  }

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

//                                                                 LTISceneBuffer

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

JNIEXPORT jlong JNICALL Java_es_gva_cit_jmrsid_LTISceneBuffer_LTISceneBuffer1Nat__JIIIIIII

  (JNIEnv *env, jobject obj, jlong cPtr, jint totalNumCols, jint totalNumRows, jint colOffset, jint rowOffset, jint windowNumCols, jint windowNumRows, jint flag){

          LTISceneBuffer *buffer=NULL;

          LTIPixel *pixel  = (LTIPixel *) 0 ;

          jclass class_mrsidbuffer;

          jfieldID id_ptrbuffer;

          t_buffer *datos_ventana = (t_buffer*)malloc(sizeof(t_buffer));

        jlong jbuf = 0 ;

        jlong jstructbuf = 0 ;

          pixel = *(LTIPixel **)&cPtr;

          //Si el flag es 1 necesitamos un buffer.

          if(pixel!=NULL){

                  if(flag>=1){

                          //Creamos el buffer

                          datos_ventana->siz = totalNumCols * totalNumRows;

                    datos_ventana->membuf = new lt_uint8[datos_ventana->siz*3];

                           datos_ventana->bufs[0] = datos_ventana->membuf;

                           datos_ventana->bufs[1] = datos_ventana->membuf+datos_ventana->siz;

                           datos_ventana->bufs[2] = datos_ventana->membuf+datos_ventana->siz*2;

                            //Obtenemos el id del campo que tiene el buffer de la clase LTISceneBuffer de java

                          class_mrsidbuffer = env->GetObjectClass(obj);

                          id_ptrbuffer = env->GetFieldID( class_mrsidbuffer, "cPtrbuffer", "J");

                          //Llamamos al constructor pasandole el buffer creado

                          buffer=new LTISceneBuffer(*pixel, totalNumCols, totalNumRows, colOffset, rowOffset, windowNumCols, windowNumRows, datos_ventana->bufs);

                          //Obtenemos los punteros a objeto buffer y a la estructura con el buffer de memoria

                          *(t_buffer **)&jstructbuf = datos_ventana;

                          //Guardamos el id del buffer en la parte java

                          env->SetLongField(obj, id_ptrbuffer, jstructbuf); 

                  }else

                          buffer=new LTISceneBuffer(*pixel, totalNumCols, totalNumRows, colOffset, rowOffset, windowNumCols, windowNumRows, NULL);        

                *(LTISceneBuffer **)&jbuf = buffer;

          }else return -1;

          return jbuf;

  }

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

//                                                                 ~LTISceneBuffer

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

JNIEXPORT void JNICALL Java_es_gva_cit_jmrsid_LTISceneBuffer_FreeLTISceneBufferNat

  (JNIEnv *env, jobject obj, jlong cPtr_LTISceneBuffer, jlong cPtr_tbuffer){

          LTISceneBuffer *scene = (LTISceneBuffer *) 0 ;

          t_buffer *datos_ventana;

          scene = *(LTISceneBuffer **)&cPtr_LTISceneBuffer;

          datos_ventana = *(t_buffer **)&cPtr_tbuffer;

          //Nos cepillamos el buffer y el objeto scenebuffer para que quede todo aseado

          if(datos_ventana!=NULL){

                  if(datos_ventana->membuf!=NULL)delete datos_ventana->membuf;

                  free(datos_ventana);

          }

          if(scene!=NULL){

                  delete scene;

          }

  }