Application: gvSIG desktop » gvSIG raster

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 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.

 */

#include <jni.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "potrace_raster.h"

/**

 * Parte de jni para vectorizar un buffer

 */

JNIEXPORT jdoubleArray JNICALL Java_org_gvsig_jpotrace_Potrace_vectorizeBufferRasterNat(JNIEnv *env, jclass clase, jintArray bufferIn, jint width, jint height, jobjectArray array) {

        int i;

        jint *cbufferIn;

        double *values;

        jsize size;

        jdoubleArray jvalues;

        jint length;

        char **list;

        cbufferIn = (*env)->GetIntArrayElements(env, bufferIn, NULL);

        length = (*env)->GetArrayLength(env, array);

        list = malloc(length * sizeof(char *));

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

                jobject string = (*env)->GetObjectArrayElement(env, array, i);

                list[i] = (char *) (*env)->GetStringUTFChars(env, string, NULL);

        }

        values = vectorizarBuffer((long *) cbufferIn, width, height, length, list);

        // we release the used memory here

        (*env)->ReleaseIntArrayElements(env, bufferIn, cbufferIn, 0);

        size = (jsize) values[0];

        jvalues = (*env)->NewDoubleArray(env, size);

        (*env)->SetDoubleArrayRegion(env, jvalues, 0, size, values);

        free(values);

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

                jobject string = (*env)->GetObjectArrayElement(env, array, i);

                (*env)->ReleaseStringUTFChars(env, string, list[i]);

        }

        free (list);

        return jvalues;

}