/*
* MusicTag Copyright (C)2003,2004
*
* 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,
* you can get a copy from http://www.opensource.org/licenses/lgpl-license.php or write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.jaudiotagger.tag.id3.framebody;
import org.jaudiotagger.tag.InvalidTagException;
import org.jaudiotagger.tag.datatype.ByteArraySizeTerminated;
import org.jaudiotagger.tag.datatype.DataTypes;
import org.jaudiotagger.tag.datatype.NumberFixedLength;
import org.jaudiotagger.tag.datatype.StringNullTerminated;
import org.jaudiotagger.tag.id3.ID3v24Frames;
import java.nio.ByteBuffer;
/**
* Encryption method registration frame.
* <p/>
* <p/>
* To identify with which method a frame has been encrypted the
* encryption method must be registered in the tag with this frame. The
* 'Owner identifier' is a null-terminated string with a URL
* containing an email address, or a link to a location where an email
* address can be found, that belongs to the organisation responsible
* for this specific encryption method. Questions regarding the
* encryption method should be sent to the indicated email address. The
* 'Method symbol' contains a value that is associated with this method
* throughout the whole tag. Values below $80 are reserved. The 'Method
* symbol' may optionally be followed by encryption specific data. There
* may be several "ENCR" frames in a tag but only one containing the
* same symbol and only one containing the same owner identifier. The
* method must be used somewhere in the tag. See section 3.3.1, flag j
* for more information.
* </p><p><table border=0 width="70%">
* <tr><td colspan=2><Header for 'Encryption method registration', ID: "ENCR"></td></tr>
* <tr><td>Owner identifier</td><td width="80%"><text string> $00</td></tr>
* <tr><td>Method symbol </td><td>$xx </td></tr>
* <tr><td>Encryption data </td><td><binary data> </td></tr>
* </table></p>
* <p/>
* <p>For more details, please refer to the ID3 specifications:
* <ul>
* <li><a href="http://www.id3.org/id3v2.3.0.txt">ID3 v2.3.0 Spec</a>
* </ul>
*
* @author : Paul Taylor
* @author : Eric Farng
* @version $Id: FrameBodyENCR.java 857 2009-12-03 11:21:11Z paultaylor $
*/
public class FrameBodyENCR extends AbstractID3v2FrameBody implements ID3v24FrameBody, ID3v23FrameBody {
/**
* Creates a new FrameBodyENCR datatype.
*/
public FrameBodyENCR() {
this.setObjectValue(DataTypes.OBJ_OWNER, "");
this.setObjectValue(DataTypes.OBJ_METHOD_SYMBOL, (byte) 0);
this.setObjectValue(DataTypes.OBJ_ENCRYPTION_INFO, new byte[0]);
}
public FrameBodyENCR(FrameBodyENCR body) {
super(body);
}
/**
* Creates a new FrameBodyENCR datatype.
*
* @param owner
* @param methodSymbol
* @param data
*/
public FrameBodyENCR(String owner, byte methodSymbol, byte[] data) {
this.setObjectValue(DataTypes.OBJ_OWNER, owner);
this.setObjectValue(DataTypes.OBJ_METHOD_SYMBOL, methodSymbol);
this.setObjectValue(DataTypes.OBJ_ENCRYPTION_INFO, data);
}
/**
* Creates a new FrameBodyENCR datatype.
*
* @param byteBuffer
* @param frameSize
* @throws InvalidTagException if unable to create framebody from buffer
*/
public FrameBodyENCR(ByteBuffer byteBuffer, int frameSize) throws InvalidTagException {
super(byteBuffer, frameSize);
}
/**
* The ID3v2 frame identifier
*
* @return the ID3v2 frame identifier for this frame type
*/
public String getIdentifier() {
return ID3v24Frames.FRAME_ID_ENCRYPTION;
}
/**
* @param owner
*/
public void setOwner(String owner) {
setObjectValue(DataTypes.OBJ_OWNER, owner);
}
/**
* @return
*/
public String getOwner() {
return (String) getObjectValue(DataTypes.OBJ_OWNER);
}
/**
*
*/
protected void setupObjectList() {
objectList.add(new StringNullTerminated(DataTypes.OBJ_OWNER, this));
objectList.add(new NumberFixedLength(DataTypes.OBJ_METHOD_SYMBOL, this, 1));
objectList.add(new ByteArraySizeTerminated(DataTypes.OBJ_ENCRYPTION_INFO, this));
}
}