/*
* 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.sanselan.formats.jpeg.xmp;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.ImageWriteException;
import org.apache.sanselan.common.byteSources.ByteSource;
import org.apache.sanselan.common.byteSources.ByteSourceArray;
import org.apache.sanselan.common.byteSources.ByteSourceFile;
import org.apache.sanselan.common.byteSources.ByteSourceInputStream;
/**
* Interface for Exif write/update/remove functionality for Jpeg/JFIF images.
* <p>
* <p>
* See the source of the XmpXmlUpdateExample class for example usage.
*
* @see org.apache.sanselan.sampleUsage.WriteXmpXmlExample
*/
public class JpegXmpRewriter extends JpegRewriter
{
/**
* Reads a Jpeg image, removes all XMP XML (by removing the APP1 segment),
* and writes the result to a stream.
* <p>
*
* @param src
* Image file.
* @param os
* OutputStream to write the image to.
*
* @see java.io.File
* @see java.io.OutputStream
*/
public void removeXmpXml(File src, OutputStream os)
throws ImageReadException, IOException, ImageWriteException
{
ByteSource byteSource = new ByteSourceFile(src);
removeXmpXml(byteSource, os);
}
/**
* Reads a Jpeg image, removes all XMP XML (by removing the APP1 segment),
* and writes the result to a stream.
* <p>
*
* @param src
* Byte array containing Jpeg image data.
* @param os
* OutputStream to write the image to.
*/
public void removeXmpXml(byte src[], OutputStream os)
throws ImageReadException, IOException, ImageWriteException
{
ByteSource byteSource = new ByteSourceArray(src);
removeXmpXml(byteSource, os);
}
/**
* Reads a Jpeg image, removes all XMP XML (by removing the APP1 segment),
* and writes the result to a stream.
* <p>
*
* @param src
* InputStream containing Jpeg image data.
* @param os
* OutputStream to write the image to.
*/
public void removeXmpXml(InputStream src, OutputStream os)
throws ImageReadException, IOException, ImageWriteException
{
ByteSource byteSource = new ByteSourceInputStream(src, null);
removeXmpXml(byteSource, os);
}
/**
* Reads a Jpeg image, removes all XMP XML (by removing the APP1 segment),
* and writes the result to a stream.
* <p>
*
* @param byteSource
* ByteSource containing Jpeg image data.
* @param os
* OutputStream to write the image to.
*/
public void removeXmpXml(ByteSource byteSource, OutputStream os)
throws ImageReadException, IOException, ImageWriteException
{
JFIFPieces jfifPieces = analyzeJFIF(byteSource);
List pieces = jfifPieces.pieces;
pieces = removeXmpSegments(pieces);
writeSegments(os, pieces);
}
/**
* Reads a Jpeg image, replaces the XMP XML and writes the result to a
* stream.
*
* @param src
* Byte array containing Jpeg image data.
* @param os
* OutputStream to write the image to.
* @param xmpXml
* String containing XMP XML.
*/
public void updateXmpXml(byte src[], OutputStream os, String xmpXml)
throws ImageReadException, IOException, ImageWriteException
{
ByteSource byteSource = new ByteSourceArray(src);
updateXmpXml(byteSource, os, xmpXml);
}
/**
* Reads a Jpeg image, replaces the XMP XML and writes the result to a
* stream.
*
* @param src
* InputStream containing Jpeg image data.
* @param os
* OutputStream to write the image to.
* @param xmpXml
* String containing XMP XML.
*/
public void updateXmpXml(InputStream src, OutputStream os, String xmpXml)
throws ImageReadException, IOException, ImageWriteException
{
ByteSource byteSource = new ByteSourceInputStream(src, null);
updateXmpXml(byteSource, os, xmpXml);
}
/**
* Reads a Jpeg image, replaces the XMP XML and writes the result to a
* stream.
*
* @param src
* Image file.
* @param os
* OutputStream to write the image to.
* @param xmpXml
* String containing XMP XML.
*/
public void updateXmpXml(File src, OutputStream os, String xmpXml)
throws ImageReadException, IOException, ImageWriteException
{
ByteSource byteSource = new ByteSourceFile(src);
updateXmpXml(byteSource, os, xmpXml);
}
/**
* Reads a Jpeg image, replaces the XMP XML and writes the result to a
* stream.
*
* @param byteSource
* ByteSource containing Jpeg image data.
* @param os
* OutputStream to write the image to.
* @param xmpXml
* String containing XMP XML.
*/
public void updateXmpXml(ByteSource byteSource, OutputStream os,
String xmpXml) throws ImageReadException, IOException,
ImageWriteException
{
JFIFPieces jfifPieces = analyzeJFIF(byteSource);
List pieces = jfifPieces.pieces;
pieces = removeXmpSegments(pieces);
List newPieces = new ArrayList();
byte xmpXmlBytes[] = xmpXml.getBytes("utf-8");
int index = 0;
while (index < xmpXmlBytes.length)
{
int segmentSize = Math.min(xmpXmlBytes.length, MAX_SEGMENT_SIZE);
byte segmentData[] = writeXmpSegment(xmpXmlBytes, index,
segmentSize);
newPieces.add(new JFIFPieceSegment(JPEG_APP1_Marker, segmentData));
index += segmentSize;
}
pieces = insertAfterLastAppSegments(pieces, newPieces);
writeSegments(os, pieces);
}
private byte[] writeXmpSegment(byte xmpXmlData[], int start, int length)
throws IOException
{
ByteArrayOutputStream os = new ByteArrayOutputStream();
os.write(XMP_IDENTIFIER);
os.write(xmpXmlData, start, length);
return os.toByteArray();
}
}