Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.fmap.dal.coverage.buffer.cache;

import java.io.IOException;

import java.util.Date;

import org.gvsig.fmap.dal.coverage.BaseTestCase;

import org.gvsig.fmap.dal.coverage.dataset.Buffer;

import org.gvsig.fmap.dal.coverage.exception.InvalidSetViewException;

import org.gvsig.fmap.dal.coverage.exception.NotSupportedExtensionException;

import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException;

import org.gvsig.fmap.dal.coverage.exception.RasterDriverException;

import org.gvsig.fmap.dal.coverage.store.RasterDataStore;

import org.gvsig.fmap.dal.coverage.store.RasterQuery;

import org.gvsig.raster.impl.buffer.cache.CacheDataServer;

import org.gvsig.raster.impl.buffer.cache.PageBandBuffer;

/**

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class TestSaveAndLoadPages extends BaseTestCase {

        private boolean            show    = false;

        private String             path    = baseDir + "03AUG23153350-M2AS-000000122423_01_P001-BROWSE.jpg";

        private RasterDataStore   f       = null;        

        private RasterQuery        query   = null;

        protected Buffer           raster  = null;

        private int                pages   = 10;

    public void start() throws Exception {

                this.setUp();

                this.testStack();

        }

    @Override

    protected void doSetUp() throws Exception {

                System.err.println("TestSaveAndLoadPages running...");

                try {

                        super.doSetUp();

                } catch (Exception e) {

                        e.printStackTrace();

                }

                try {

                        f = manager.open(path);

                } catch (NotSupportedExtensionException e) {

                        e.printStackTrace();

                } catch (RasterDriverException e) {

                        e.printStackTrace();

                }

        }

        public void testStack() {

                int[] drawableBands = {0, 1, 2};

                query = manager.createQuery();

                query.setDrawableBands(drawableBands);

                try {

                        query.setAreaOfInterest(0, 0, (int)f.getWidth(), (int)f.getHeight());

                        raster = f.query(query);

                } catch (InvalidSetViewException e1) {

                        e1.printStackTrace();

                } catch (ProcessInterruptedException e) {

                        e.printStackTrace();

                } catch (RasterDriverException e) {

                        e.printStackTrace();

                }

                int h =  (int)f.getHeight() / pages;

                PageBandBuffer[] pbWriterList = new PageBandBuffer[h];

                CacheDataServer[] cds = new CacheDataServer[h];

                long t2, t3, t4;

                                long t1 = new Date().getTime();

                //Salvamos los PageBuffer

                byte[] data = new byte[3];

                for (int i = 0; i < pages; i++) {

                        pbWriterList[i] = new PageBandBuffer((int)f.getDataType()[0], (int)f.getWidth(), h, 3, true, i);

                        cds[i] = new CacheDataServer(null, 0, i);

                        for (int k = 0; k < f.getWidth(); k++) {

                                for (int j = 0; j < h; j++) {

                                        raster.getElemByte((i * h) + j, k, data);

                                        pbWriterList[i].setElemByte(j, k, data);

                                }        

                        }

                        try {

                                cds[i].savePage(pbWriterList[i]);

                        } catch (IOException e) {

                                e.printStackTrace();

                        }

                }

                t2 = new Date().getTime();

                if (show)

                        System.out.println("Time: Cargar PageBuffers y salvar a disco: " + ((t2 - t1) / 1000D) + ", secs.");

                //Recuperamos las p?ginas

                PageBandBuffer[] pbReaderList = new PageBandBuffer[h];

                for (int i = 0; i < pages; i++) {

                        pbReaderList[i] = new PageBandBuffer((int)f.getDataType()[0], (int)f.getWidth(), h, 3, true, i);

                        cds[i].loadPage(pbReaderList[i]);

                }

                t3 = new Date().getTime();

                if (show)

                        System.out.println("Time: Recuperar p?ginas de disco: " + ((t3 - t2) / 1000D) + ", secs.");

                //Comparamos

                byte[] a = new byte[3];

                byte[] b = new byte[3];

                for (int i = 0; i < pages; i++) {

                        for (int k = 0; k < f.getWidth(); k++) {

                                for (int j = 0; j < h; j++) {

                                        pbReaderList[i].getElemByte(j, k, a);

                                        pbWriterList[i].getElemByte(j, k, b);

                                        for (int t = 0; t < 3; t++) 

                                                assertEquals(a[t], b[t]);

                                }

                        }

                }

                t4 = new Date().getTime();

                if (show)

                        System.out.println("Time: Comparaciones: " + ((t4 - t3) / 1000D) + ", secs.");

        }

}