Application: gvSIG desktop

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

 * $Id: gdal_interfaz.c 834 2005-01-05 14:04:27Z igbrotru $

 *

 * Name:     gdal_interfaz.c

 * Project:  JGDAL. Interface java to gdal (Frank Warmerdam).

 * Purpose:  dataset's Basic Funcions.

 * 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.

 */

#include <jni.h>

#include "es_gva_cit_jgdal_Gdal.h"

#include "es_gva_cit_jgdal_JNIBase.h"

#include "gdal.h"

#include "cpl_string.h"

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

//                                                                Open

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

JNIEXPORT jlong JNICALL Java_es_gva_cit_jgdal_Gdal_openNat

  (JNIEnv *env, jobject obj, jstring pszF, jint acc){

          const char *pszFilename;

          GDALDatasetH *dataset;

          jlong jresult = 0 ;

          FILE *fich;

          pszFilename = (*env)->GetStringUTFChars(env, pszF, 0);

        fich=fopen( pszFilename, "r" );

        if( fich )

                fclose(fich);

        else

           {

              fclose(fich);

              return -1;

           }

          GDALAllRegister();

          dataset = GDALOpen((char *)pszFilename,(int)acc);

          *(GDALDatasetH **)&jresult = dataset;

    (*env)->ReleaseStringUTFChars(env, pszF, pszFilename);

          if(dataset==NULL)return -1; 

          else return jresult; 

  }

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

//                                                                GetRasterXSize

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

  JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_JNIBase_getRasterXSizeNat

  (JNIEnv *env, jobject obj, jlong cPtr){

          int res=-1;

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

          if(dt!=NULL)

                  res = GDALGetRasterXSize(dt);

          return res;

  }

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

//                                                                GetRasterYSize

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

  JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_JNIBase_getRasterYSizeNat

  (JNIEnv *env, jobject obj, jlong cPtr){

          int res=-1;

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

          if(dt!=NULL)

                  res = GDALGetRasterYSize(dt);

          return res;

  }

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

//                                                                GetRasterCount

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

 JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_JNIBase_getRasterCountNat

  (JNIEnv *env, jobject obj, jlong cPtr){

          int res=-1;

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

          if(dt!=NULL)

                  res = GDALGetRasterCount(dt);

          return res;

  }

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

//                                                                 GetMetadata

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

JNIEXPORT jobjectArray JNICALL Java_es_gva_cit_jgdal_Gdal_getMetadataNat

  (JNIEnv *env, jobject obj, jlong cPtr, jstring pszDomain){

           char                **papszMetadata;

           GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

           int i,nmetadatos;

           jclass class_string;

           jobjectArray vector_str;

           //Obtenemos los metadatos sobre papszMetadata

           dt = *(GDALDatasetH **)&cPtr;

           if(dt!=NULL){

                 papszMetadata = GDALGetMetadata( dt, NULL );

                 //Si hay metadatos devolvemos creamos el vector de String de java y los devolvemos

                 nmetadatos = CSLCount(papszMetadata);

             if( nmetadatos > 0 )

              {

                class_string = (*env)->FindClass (env, "java/lang/String");

                         vector_str=(*env)->NewObjectArray(env, nmetadatos, class_string, (*env)->NewStringUTF(env,""));

                         //Cargamos los metadatos

                for( i = 0; papszMetadata[i] != NULL; i++ )

                        (*env)->SetObjectArrayElement(env,vector_str,i,(*env)->NewStringUTF(env,papszMetadata[i]));

                           return vector_str;            

              }

           }

           return NULL;

  }

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

//                                                                GetRasterBand  

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

  JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_Gdal_getRasterBandNat

  (JNIEnv *env, jobject obj, jlong cPtr, jint hBand){

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          GDALRasterBandH *rasterband=NULL;

          jlong jresult = 0;

        dt = *(GDALDatasetH **)&cPtr;

    if(dt!=NULL){

                rasterband = GDALGetRasterBand(dt,(int)hBand);

                *(GDALDatasetH **)&jresult = rasterband;

    }else return -1;

   return jresult;

  }

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

//                                                                GetGeoTransform

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

JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_Gdal_getGeoTransformNat

  (JNIEnv *env, jobject obj, jlong cPtr, jobject gt){

          jclass class_geotransform;

          jfieldID id_campo;

          double adfgt[6];

          jdoubleArray doublearray;

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

        dt = *(GDALDatasetH **)&cPtr;

          if(dt!=NULL){

          //Obtenemos el objeto java que contendr? el vector geotransform

                  class_geotransform = (*env)->GetObjectClass(env, gt);

                  id_campo = (*env)->GetFieldID(env, class_geotransform, "adfgeotransform", "[D");

           //Cargamos el buffer llamando a GDALRasterIO

                  if(GDALGetGeoTransform(dt,adfgt)==CE_None){

                          doublearray = (*env)->NewDoubleArray(env,6);

                    if(doublearray!=NULL){

                                  (*env)->SetDoubleArrayRegion(env, doublearray, 0, 6,(jdouble *)adfgt); 

                                  (*env)->SetObjectField(env, gt, id_campo, doublearray);

                        }

                  }else return -1;                

          }else return -1;

          return 0;

  }

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

//                                                                setGeoTransformNat

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

JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_Gdal_setGeoTransformNat

  (JNIEnv *env, jobject obj, jlong cPtr, jobject gt){

          jclass class_geotransform;

          jfieldID id_campo;

          double adfgt[6];

          jdoubleArray doublearray;

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

          if(dt!=NULL){

                  //Obtenemos los valores pasados en el vector gt

                  class_geotransform = (*env)->GetObjectClass(env, gt);

                  id_campo = (*env)->GetFieldID(env, class_geotransform, "adfgeotransform", "[D");

                  doublearray =(jdoubleArray)(*env)->GetObjectField(env, gt, id_campo);

                  (*env)->GetDoubleArrayRegion(env,doublearray,0,6,(jdouble *)adfgt);

                  GDALSetGeoTransform( dt, adfgt );

                  return 0;

          }

          return -1;

  }  

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

//                                                                GetProjectionRef

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

JNIEXPORT jstring JNICALL Java_es_gva_cit_jgdal_Gdal_getProjectionRefNat

  (JNIEnv *env, jobject obj, jlong cPtr){

        char *pszProjection=NULL;

          jstring pszP=NULL;

        GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

          //Llamamos a la funci?n y cargamos el jstring con el resultado         

        if(dt!=NULL){          

                   pszProjection = (char *) GDALGetProjectionRef(dt);

                   if(pszProjection!=NULL)

                           pszP = (*env)->NewStringUTF(env, pszProjection); 

        }

           return pszP;

  }

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

//                                                                setProjection

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

JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_Gdal_setProjectionNat

  (JNIEnv *env, jobject obj, jlong cPtr, jstring proj){

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

          if(dt!=NULL){

                  const char *projeccion = (*env)->GetStringUTFChars(env, proj, 0);

                  GDALSetProjection( dt, projeccion );

                  (*env)->ReleaseStringUTFChars(env, proj, projeccion);

                  return 1;

          }

          return -1;

  }

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

//                                                                        Close

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

JNIEXPORT void JNICALL Java_es_gva_cit_jgdal_Gdal_closeNat

  (JNIEnv *env, jobject obj, jlong cPtr){

        GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

        GDALClose(dt);        

  }

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

/*                        GDALGetDriverByName()                         */

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

JNIEXPORT jlong JNICALL Java_es_gva_cit_jgdal_Gdal_getDriverByNameNat

  (JNIEnv *env, jclass clase, jstring name){

          const char *namedrv;

          GDALDriverH *drv;

          jlong jresult=-1;

    if(GDALGetDriverCount()<=0)GDALAllRegister();

          namedrv = (*env)->GetStringUTFChars(env, name, 0);

          drv=GDALGetDriverByName(namedrv);  

          *(GDALDriverH **)&jresult = drv;

          (*env)->ReleaseStringUTFChars(env, name, namedrv);

           return (long)jresult;

  }

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

/*                        getGCPCountNat()                              */

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

 JNIEXPORT jint JNICALL Java_es_gva_cit_jgdal_JNIBase_getGCPCountNat

  (JNIEnv *env, jobject obj, jlong cPtr){

          int res=-1;

          GDALDatasetH *dt  = (GDALDatasetH *) 0 ;

          dt = *(GDALDatasetH **)&cPtr;

          if(dt!=NULL)

                  res = GDALGetGCPCount(dt);

          return res;

  }