/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2002-2010, 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.geopkg;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.util.Locale;

import javax.imageio.spi.ImageInputStreamSpi;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.MemoryCacheImageInputStream;

/**
 * Image input stream provider creating an image input stream directly from a byte array.
 *  
 * @author Justin Deoliveira, OpenGeo
 */
public class ByteArrayImageInputStreamSpi extends ImageInputStreamSpi{

    public ByteArrayImageInputStreamSpi() {
        super("GeoServer", "1.0", byte[].class);
    }

    @Override
    public ImageInputStream createInputStreamInstance(Object input, boolean useCache, File cacheDir) 
        throws IOException {
        if (input instanceof byte[]) {
            return new MemoryCacheImageInputStream(new ByteArrayInputStream((byte[])input));
        }
        return null;
    }

    @Override
    public String getDescription(Locale locale) {
        return "Byte array stream";
    }


}