org.geotools.gce.grassraster.spi.GrassBinaryImageReaderSpi Maven / Gradle / Ivy

/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2006-2011, Open Source Geospatial Foundation (OSGeo)
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 */
package org.geotools.gce.grassraster.spi;

import java.io.File;
import java.io.IOException;
import java.util.Locale;
import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.stream.ImageInputStream;
import org.geotools.gce.grassraster.GrassBinaryImageReader;
import org.geotools.gce.grassraster.GrassBinaryImageWriter;

/**
 * The Service Provider Interface for GRASS binary rasters.
 *
 * @author Andrea Antonello (www.hydrologis.com)
 * @since 3.0
 * @see GrassBinaryImageReader
 * @see GrassBinaryImageWriter
 * @see GrassBinaryImageReaderSpi
 */
@SuppressWarnings("nls")
public class GrassBinaryImageReaderSpi extends ImageReaderSpi {

    private static final String vendorName = "www.hydrologis.com";
    private static final String[] suffixes = {""};
    private static final String[] formatNames = {
        "grass", "GRASS", "grassbin", "GRASS binary raster"
    };
    private static final String[] MIMETypes = {"image/grass"};
    private static final String version = "1.0";

    /** the class name of the image reader. */
    private static final String readerCN =
            "eu.hydrologis.jgrass.grassbinary.imageio.io.GrassBinaryImageReader";

    /** the inputTypes that are accepted by the {@link GrassBinaryImageReader}. */
    private static final Class[] inputTypes = new Class[] {File.class, ImageInputStream.class};

    /** the writerSpiName */
    private static final String[] wSN = {
        "eu.hydrologis.jgrass.grassbinary.imageio.io.GrassBinaryImageWriterSpi"
    };

    /** the flag for stream metadata support. */
    private static final boolean supportsStandardStreamMetadataFormat = false;

    private static final String nativeStreamMetadataFormatName = null;
    private static final String nativeStreamMetadataFormatClassName = null;
    private static final String[] extraStreamMetadataFormatNames = null;
    private static final String[] extraStreamMetadataFormatClassNames = null;

    /** the flag for image metadata support. */
    private static final boolean supportsStandardImageMetadataFormat = true;

    private static final String nativeImageMetadataFormatName =
            "eu.hydrologis.jgrass.grassbinary.imageio.metadata.GrassBinaryImageMetadata";
    private static final String nativeImageMetadataFormatClassName =
            "eu.hydrologis.jgrass.grassbinary.imageio.metadata.GrassBinaryImageMetadataFormat";
    private static final String[] extraImageMetadataFormatNames = {null};
    private static final String[] extraImageMetadataFormatClassNames = {null};

    /** default constructor for the service provider interface. */
    public GrassBinaryImageReaderSpi() {
        super(
                vendorName,
                version,
                formatNames,
                suffixes,
                MIMETypes,
                readerCN,
                inputTypes,
                wSN,
                supportsStandardStreamMetadataFormat,
                nativeStreamMetadataFormatName,
                nativeStreamMetadataFormatClassName,
                extraStreamMetadataFormatNames,
                extraStreamMetadataFormatClassNames,
                supportsStandardImageMetadataFormat,
                nativeImageMetadataFormatName,
                nativeImageMetadataFormatClassName,
                extraImageMetadataFormatNames,
                extraImageMetadataFormatClassNames);
    }

    public String getDescription(Locale locale) {
        return "GRASS binary raster image reader service provider interface, version " + version;
    }

    public boolean canDecodeInput(Object source) throws IOException {
        if (source instanceof File) {
            return true;
        }
        return false;
    }

    public GrassBinaryImageReader createReaderInstance(Object extension) throws IOException {
        return new GrassBinaryImageReader(this);
    }
}