/**
* @author : Paul Taylor
* @author : Eric Farng
*
* Version @version:$Id: Lyrics3v2.java 836 2009-11-12 15:44:07Z paultaylor $
*
* 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
*
* Description:
*/
package org.jaudiotagger.tag.lyrics3;
import org.jaudiotagger.tag.InvalidTagException;
import org.jaudiotagger.tag.TagException;
import org.jaudiotagger.tag.TagNotFoundException;
import org.jaudiotagger.tag.TagOptionSingleton;
import org.jaudiotagger.tag.id3.AbstractID3v2Frame;
import org.jaudiotagger.tag.id3.AbstractTag;
import org.jaudiotagger.tag.id3.ID3v1Tag;
import org.jaudiotagger.tag.id3.ID3v24Tag;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.Iterator;
public class Lyrics3v2 extends AbstractLyrics3 {
/**
*
*/
private HashMap<String, Lyrics3v2Field> fieldMap = new HashMap<String, Lyrics3v2Field>();
/**
* Creates a new Lyrics3v2 datatype.
*/
public Lyrics3v2() {
}
public Lyrics3v2(Lyrics3v2 copyObject) {
super(copyObject);
Iterator<String> iterator = copyObject.fieldMap.keySet().iterator();
String oldIdentifier;
String newIdentifier;
Lyrics3v2Field newObject;
while (iterator.hasNext()) {
oldIdentifier = iterator.next();
newIdentifier = oldIdentifier;
newObject = new Lyrics3v2Field(copyObject.fieldMap.get(newIdentifier));
fieldMap.put(newIdentifier, newObject);
}
}
/**
* Creates a new Lyrics3v2 datatype.
*
* @param mp3tag
* @throws UnsupportedOperationException
*/
public Lyrics3v2(AbstractTag mp3tag) {
if (mp3tag != null) {
// upgrade the tag to lyrics3v2
if (mp3tag instanceof Lyrics3v2) {
throw new UnsupportedOperationException("Copy Constructor not called. Please type cast the argument");
} else if (mp3tag instanceof Lyrics3v1) {
Lyrics3v1 lyricOld = (Lyrics3v1) mp3tag;
Lyrics3v2Field newField;
newField = new Lyrics3v2Field(new FieldFrameBodyLYR(lyricOld.getLyric()));
fieldMap.put(newField.getIdentifier(), newField);
} else {
Lyrics3v2Field newField;
Iterator<AbstractID3v2Frame> iterator;
iterator = (new ID3v24Tag(mp3tag)).iterator();
while (iterator.hasNext()) {
try {
newField = new Lyrics3v2Field(iterator.next());
if (newField != null) {
fieldMap.put(newField.getIdentifier(), newField);
}
} catch (TagException ex) {
//invalid frame to createField lyrics3 field. ignore and keep going
}
}
}
}
}
/**
* Creates a new Lyrics3v2 datatype.
*
* @param file
* @param byteBuffer
* @throws TagNotFoundException
* @throws IOException
*/
public Lyrics3v2(ByteBuffer byteBuffer) throws TagNotFoundException, IOException {
try {
this.read(byteBuffer);
} catch (TagException e) {
e.printStackTrace();
}
}
/**
* @param field
*/
public void setField(Lyrics3v2Field field) {
fieldMap.put(field.getIdentifier(), field);
}
/**
* Gets the value of the frame identified by identifier
*
* @param identifier The three letter code
* @return The value associated with the identifier
*/
public Lyrics3v2Field getField(String identifier) {
return fieldMap.get(identifier);
}
/**
* @return
*/
public int getFieldCount() {
return fieldMap.size();
}
/**
* @return
*/
public String getIdentifier() {
return "Lyrics3v2.00";
}
/**
* @return
*/
public int getSize() {
int size = 0;
Iterator<Lyrics3v2Field> iterator = fieldMap.values().iterator();
Lyrics3v2Field field;
while (iterator.hasNext()) {
field = iterator.next();
size += field.getSize();
}
// include LYRICSBEGIN, but not 6 char size or LYRICSEND
return 11 + size;
}
/**
* @param obj
* @return
*/
public boolean equals(Object obj) {
if (!(obj instanceof Lyrics3v2)) {
return false;
}
Lyrics3v2 object = (Lyrics3v2) obj;
return this.fieldMap.equals(object.fieldMap) && super.equals(obj);
}
/**
* @param identifier
* @return
*/
public boolean hasField(String identifier) {
return fieldMap.containsKey(identifier);
}
/**
* @return
*/
public Iterator<Lyrics3v2Field> iterator() {
return fieldMap.values().iterator();
}
/**
* TODO implement
*
* @param byteBuffer
* @return
* @throws IOException
*/
public boolean seek(ByteBuffer byteBuffer) {
return false;
}
public void read(ByteBuffer byteBuffer) throws TagException {
long filePointer;
int lyricSize;
if (seek(byteBuffer)) {
lyricSize = seekSize(byteBuffer);
} else {
throw new TagNotFoundException("Lyrics3v2.00 Tag Not Found");
}
// reset file pointer to the beginning of the tag;
seek(byteBuffer);
filePointer = byteBuffer.position();
fieldMap = new HashMap<String, Lyrics3v2Field>();
Lyrics3v2Field lyric;
// read each of the fields
while ((byteBuffer.position()) < (lyricSize - 11)) {
try {
lyric = new Lyrics3v2Field(byteBuffer);
setField(lyric);
} catch (InvalidTagException ex) {
// keep reading until we're done
}
}
}
/**
* @param identifier
*/
public void removeField(String identifier) {
fieldMap.remove(identifier);
}
/**
* @param file
* @return
* @throws IOException
*/
public boolean seek(RandomAccessFile file) throws IOException {
byte[] buffer = new byte[11];
String lyricEnd;
String lyricStart;
long filePointer;
long lyricSize;
// check right before the ID3 1.0 tag for the lyrics tag
file.seek(file.length() - 128 - 9);
file.read(buffer, 0, 9);
lyricEnd = new String(buffer, 0, 9);
if (lyricEnd.equals("LYRICS200")) {
filePointer = file.getFilePointer();
} else {
// check the end of the file for a lyrics tag incase an ID3
// tag wasn't placed after it.
file.seek(file.length() - 9);
file.read(buffer, 0, 9);
lyricEnd = new String(buffer, 0, 9);
if (lyricEnd.equals("LYRICS200")) {
filePointer = file.getFilePointer();
} else {
return false;
}
}
// read the 6 bytes for the length of the tag
filePointer -= (9 + 6);
file.seek(filePointer);
file.read(buffer, 0, 6);
lyricSize = Integer.parseInt(new String(buffer, 0, 6));
// read the lyrics begin tag if it exists.
file.seek(filePointer - lyricSize);
file.read(buffer, 0, 11);
lyricStart = new String(buffer, 0, 11);
return lyricStart.equals("LYRICSBEGIN");
}
/**
* @return
*/
public String toString() {
Iterator<Lyrics3v2Field> iterator = fieldMap.values().iterator();
Lyrics3v2Field field;
String str = getIdentifier() + " " + this.getSize() + "\n";
while (iterator.hasNext()) {
field = iterator.next();
str += (field.toString() + "\n");
}
return str;
}
/**
* @param identifier
*/
public void updateField(String identifier) {
Lyrics3v2Field lyrField;
if (identifier.equals("IND")) {
boolean lyricsPresent = fieldMap.containsKey("LYR");
boolean timeStampPresent = false;
if (lyricsPresent) {
lyrField = fieldMap.get("LYR");
FieldFrameBodyLYR lyrBody = (FieldFrameBodyLYR) lyrField.getBody();
timeStampPresent = lyrBody.hasTimeStamp();
}
lyrField = new Lyrics3v2Field(new FieldFrameBodyIND(lyricsPresent, timeStampPresent));
setField(lyrField);
}
}
/**
* @param file
* @throws IOException
*/
public void write(RandomAccessFile file) throws IOException {
int offset = 0;
long size;
long filePointer;
byte[] buffer = new byte[6 + 9];
String str;
Lyrics3v2Field field;
Iterator<Lyrics3v2Field> iterator;
ID3v1Tag id3v1tag;
new ID3v1Tag();
id3v1tag = null;
delete(file);
file.seek(file.length());
filePointer = file.getFilePointer();
str = "LYRICSBEGIN";
for (int i = 0; i < str.length(); i++) {
buffer[i] = (byte) str.charAt(i);
}
file.write(buffer, 0, str.length());
// IND needs to go first. lets createField/update it and write it first.
updateField("IND");
field = fieldMap.get("IND");
field.write(file);
iterator = fieldMap.values().iterator();
while (iterator.hasNext()) {
field = iterator.next();
String id = field.getIdentifier();
boolean save = TagOptionSingleton.getInstance().getLyrics3SaveField(id);
if ((!id.equals("IND")) && save) {
field.write(file);
}
}
size = file.getFilePointer() - filePointer;
if (this.getSize() != size) {
//logger.info("Lyrics3v2 size didn't match up while writing.");
//logger.info("this.getsize() = " + this.getSize());
//logger.info("size (filePointer) = " + size);
}
str = Long.toString(size);
for (int i = 0; i < (6 - str.length()); i++) {
buffer[i] = (byte) '0';
}
offset += (6 - str.length());
for (int i = 0; i < str.length(); i++) {
buffer[i + offset] = (byte) str.charAt(i);
}
offset += str.length();
str = "LYRICS200";
for (int i = 0; i < str.length(); i++) {
buffer[i + offset] = (byte) str.charAt(i);
}
offset += str.length();
file.write(buffer, 0, offset);
if (id3v1tag != null) {
id3v1tag.write(file);
}
}
/**
* TODO
*
* @param byteBuffer
* @return
*/
private int seekSize(ByteBuffer byteBuffer) {
/*
byte[] buffer = new byte[11];
String lyricEnd = "";
long filePointer = 0;
// check right before the ID3 1.0 tag for the lyrics tag
file.seek(file.length() - 128 - 9);
file.read(buffer, 0, 9);
lyricEnd = new String(buffer, 0, 9);
if (lyricEnd.equals("LYRICS200"))
{
filePointer = file.getFilePointer();
}
else
{
// check the end of the file for a lyrics tag incase an ID3
// tag wasn't placed after it.
file.seek(file.length() - 9);
file.read(buffer, 0, 9);
lyricEnd = new String(buffer, 0, 9);
if (lyricEnd.equals("LYRICS200"))
{
filePointer = file.getFilePointer();
}
else
{
return -1;
}
}
// read the 6 bytes for the length of the tag
filePointer -= (9 + 6);
file.seek(filePointer);
file.read(buffer, 0, 6);
return Integer.parseInt(new String(buffer, 0, 6));
*/
return -1;
}
}