/*
* Copyright (c) 2008 Los Alamos National Security, LLC.
*
* Los Alamos National Laboratory
* Research Library
* Digital Library Research & Prototyping Team
*
* 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
package gov.lanl.adore.djatoka.io.reader;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;
import gov.lanl.adore.djatoka.io.FormatIOException;
import gov.lanl.adore.djatoka.io.IReader;
import info.freelibrary.djatoka.io.PNMImage;
/**
* Returns BufferedImage give a PNM image InputStream or file path.
*
* @author Ryan Chute
* @author Kevin S. Clarke <<a href="mailto:ksclarke@gmail.com">ksclarke@gmail.com</a>>
*/
public class PNMReader implements IReader {
/**
* Returns a BufferedImage instance for provided image file path.
*
* @param aFileName absolute file path for image file
* @return a <code>BufferedImage</code> instance for source image file
* @throws FormatIOException
*/
@Override
public BufferedImage open(final String aFileName) throws FormatIOException {
try {
return new PNMImage(aFileName).getBufferedImage();
} catch (final IOException details) {
throw new FormatIOException(details);
}
}
/**
* Returns a BufferedImage instance for provided InputStream
*
* @param aInputStream an InputStream consisting of an image bitstream
* @return a <code>BufferedImage</code> instance for source image InputStream
* @throws FormatIOException
*/
@Override
public BufferedImage open(final InputStream aInputStream) throws FormatIOException {
try {
return new PNMImage(aInputStream).getBufferedImage();
} catch (final IOException details) {
throw new FormatIOException(details);
}
}
}