Package gov.lanl.adore.djatoka.io.writer

Source Code of gov.lanl.adore.djatoka.io.writer.PNMWriter

/*
* 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.writer;

import gov.lanl.adore.djatoka.io.FormatIOException;
import gov.lanl.adore.djatoka.io.IWriter;

import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Properties;

import org.apache.log4j.Logger;

import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.PNMEncodeParam;

/**
* PNM File Writer. Uses JAI to write BufferedImage as PNM
* @author Ryan Chute
*
*/
public class PNMWriter implements IWriter {
  static Logger logger = Logger.getLogger(PNMWriter.class);
  /**
   * Write a BufferedImage instance using implementation to the
   * provided OutputStream.
   * @param bi a BufferedImage instance to be serialized
   * @param os OutputStream to output the image to
   * @throws FormatIOException
   */
  public void write(BufferedImage bi, OutputStream os) throws FormatIOException {
    if (bi != null) {
      BufferedOutputStream bos = null;
      try {
        bos = new BufferedOutputStream(os);
        PNMEncodeParam param = new PNMEncodeParam();
        param.setRaw(true);
        ImageEncoder enc = ImageCodec.createImageEncoder("PNM", bos, param);
        enc.encode(bi);
      } catch (IOException e) {
        logger.error(e,e);
      }
    }
  }
 
  /**
   * NOT SUPPORTED.
   */
  public void setWriterProperties(Properties props) {
  }
}
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