/*
* 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.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.pdfbox.io.ASCII85InputStream;
import org.apache.pdfbox.io.ASCII85OutputStream;
import org.apache.pdfbox.cos.COSDictionary;
/**
* This is the used for the ASCIIHexDecode filter.
*
* @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
* @version $Revision: 1.8 $
*/
public class ASCII85Filter implements Filter
{
/**
* {@inheritDoc}
*/
public void decode( InputStream compressedData, OutputStream result, COSDictionary options, int filterIndex )
throws IOException
{
ASCII85InputStream is = null;
try
{
is = new ASCII85InputStream(compressedData);
byte[] buffer = new byte[1024];
int amountRead = 0;
while( (amountRead = is.read( buffer, 0, 1024) ) != -1 )
{
result.write(buffer, 0, amountRead);
}
result.flush();
}
finally
{
if( is != null )
{
is.close();
}
}
}
/**
* {@inheritDoc}
*/
public void encode( InputStream rawData, OutputStream result, COSDictionary options, int filterIndex )
throws IOException
{
ASCII85OutputStream os = new ASCII85OutputStream(result);
byte[] buffer = new byte[1024];
int amountRead = 0;
while( (amountRead = rawData.read( buffer, 0, 1024 )) != -1 )
{
os.write( buffer, 0, amountRead );
}
os.close();
result.flush();
}
}