/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox.filter;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.pdfbox.cos.COSDictionary;
/**
* This is used for the JPXDecode filter.
*
* @author <a href="mailto:timo.boehme@ontochem.com">Timo Böhme</a>
*
*/
public class JPXFilter implements Filter
{
/** Log instance. */
private static final Log log = LogFactory.getLog(JPXFilter.class);
/**
* Decode JPEG2000 data using Java ImageIO library.
*
* {@inheritDoc}
*
*/
public void decode( InputStream compressedData, OutputStream result, COSDictionary options, int filterIndex )
throws IOException
{
BufferedImage bi = ImageIO.read( compressedData );
if ( bi != null )
{
DataBuffer dBuf = bi.getData().getDataBuffer();
if ( dBuf.getDataType() == DataBuffer.TYPE_BYTE )
{
result.write( ( ( DataBufferByte ) dBuf ).getData() );
}
else
{
log.error( "Image data buffer not of type byte but type " + dBuf.getDataType() );
}
}
}
/**
* {@inheritDoc}
*/
public void encode( InputStream rawData, OutputStream result, COSDictionary options, int filterIndex )
throws IOException
{
System.err.println( "Warning: JPXFilter.encode is not implemented yet, skipping this stream." );
}
}