Application: gvSIG desktop

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2016 gvSIG Association

 *

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.file.bsq;

import java.io.IOException;

import java.util.ArrayList;

import org.gvsig.fmap.dal.exception.InitializeException;

import org.gvsig.fmap.dal.exception.OpenException;

import org.gvsig.fmap.dal.fileutils.HDRFile;

import org.gvsig.fmap.dal.fileutils.spi.UtilsFile;

import org.gvsig.fmap.dal.raster.OpenRasterStoreParameters;

import org.gvsig.fmap.dal.raster.spi.BandDescriptorServices;

import org.gvsig.fmap.dal.spi.DataStoreProviderServices;

import org.gvsig.tools.exception.BaseException;

public class BSQStoreProvider extends AbstractFileRasterStoreProvider {

    // https://www.qgistutorials.com/en/docs/open_bil_bip_bsq_files.html

    // http://glcf.umd.edu/data/landcover/data.shtml

    protected HDRFile hdrFile;

    @SuppressWarnings("OverridableMethodCallInConstructor")

    public BSQStoreProvider(

            String name,

            String description,

            OpenRasterStoreParameters params, 

            DataStoreProviderServices storeServices) throws InitializeException {

        super(

                name,

                description,

                params,

                storeServices

        );

        this.init(params, storeServices);

    }

    @Override

    public int getBands() {

        this.autoOpen();

        return this.hdrFile.getNbands();

    }

    @Override

    public int getRows() {

        this.autoOpen();

        return this.hdrFile.getNrows();

    }

    @Override

    public int getColumns() {

        this.autoOpen();

        return this.hdrFile.getNcols();

    }

    @Override

    protected void doDispose() throws BaseException {

        super.doDispose();

        this.hdrFile = null;

    }

    @Override

    public void open() throws OpenException {

        if ( this.hdrFile!=null ) {

            return;

        }

        HDRFile theHDRFile = UtilsFile.createHDRFile(this.getFile());

        if (!theHDRFile.isValid()) {

            throw new OpenException(this.getProviderName(), null);

        }

        this.hdrFile = theHDRFile;

        this.envelope = this.hdrFile.getEnvelope();

        if (this.envelope == null) {

            this.envelope = this.wldFile.getEnvelope(

                    this.hdrFile.getNrows(),

                    this.hdrFile.getNcols()

            );

        }

        try {

            int dataType = this.hdrFile.getDataType();

            this.pageManagers = new ArrayList<>();

            for (int nband = 0; nband < this.hdrFile.getNbands(); nband++) {

                BandDescriptorServices bandDescriptor = getBandDescriptor(nband);

                bandDescriptor.setDataType(dataType);

                bandDescriptor.setName(String.valueOf(nband));

                try {

                    bandDescriptor.setDescription(this.getName()+ "- band "+nband);

                } catch (Exception e) {

                    bandDescriptor.setDescription("band "+nband);

                }

                bandDescriptor.add("X size", this.hdrFile.getNcols());

                bandDescriptor.add("Y size", this.hdrFile.getNrows());                

                BSQBandPageManager pageManager = new BSQBandPageManager(

                        getFile(),

                        nband * this.hdrFile.getBandSize(),

                        this.hdrFile.getNrows(),

                        this.hdrFile.getNcols(),

                        dataType

                );

                this.pageManagers.add(pageManager);

            }

        } catch (IOException ex) {

            this.hdrFile = null;

            throw new OpenException(storeProviderName, ex);

        }

    }

}