| gvSIG desktop 1

#include <jni.h>

#include <org_gvsig_addo_Jaddo.h>

#include "gdal_priv.h"

#include "cpl_string.h"

jobject *jni_obj;

JNIEnv *jni_env;

int CPL_STDCALL incrementFnc( double dfComplete, const char *pszMessage, void * pProgressArg ) {

        jclass class_incr;

        jmethodID method;

        int value = 0;

        value = (int)(dfComplete * 100);

        class_incr = jni_env->FindClass ("org/gvsig/addo/IOverviewIncrement");

        method = jni_env->GetMethodID( class_incr, "setPercent", "(I)V");

        jni_env->CallVoidMethod( (*jni_obj), method, value);

  return 1;

}

JNIEXPORT jint JNICALL Java_org_gvsig_addo_Jaddo_buildOverviewsNative

  (JNIEnv *env, jobject obj, jint method, jstring file, jintArray values) {

          int err = 0;

          jsize lon = 0;

        int i = 0;

          jint *listValues = NULL;

          GDALDataset *poDataset;

          int anLevels[4] = {2, 4, 8, 16};

          const char * pszResampling = "nearest";

        const char *filename = env->GetStringUTFChars( file, 0);

        lon = env->GetArrayLength( values);

        jni_obj = &obj;

          jni_env = env;

          listValues = env->GetIntArrayElements( values, 0);

          for (i = 0; i < lon; i++) {

                anLevels[i] = listValues[i];

        }

          switch(method) {

                  case 0: pszResampling = "nearest"; break;

                  case 1: pszResampling = "average"; break;

                  case 2: pszResampling = "average_mp"; break;

                  case 3: pszResampling = "average_magphase"; break;

                  case 4: pszResampling = "mode"; break;

          }

          GDALAllRegister();

    poDataset = (GDALDataset *) GDALOpen( filename, GA_Update );

    if( poDataset == NULL )

        poDataset = (GDALDataset *) GDALOpen( filename, GA_ReadOnly );

    if( poDataset == NULL ) {

            env->ReleaseIntArrayElements( values, listValues, 0);

            env->ReleaseStringUTFChars( file, filename);

        return CE_Fatal;

    }

        err = poDataset->BuildOverviews(  pszResampling,

                            lon, anLevels, 0, NULL,

                            incrementFnc, NULL );

    if( err != CE_None ) {

                env->ReleaseIntArrayElements( values, listValues, 0);

                env->ReleaseStringUTFChars( file, filename);

        return err;

    }

        delete poDataset;

    GDALDestroyDriverManager();

    env->ReleaseIntArrayElements( values, listValues, 0);

    env->ReleaseStringUTFChars( file, filename);

    return -1;

}