import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
/**
 * Private helper method that strips ID3v2 tags from an mp3 file.
 * 
 * @param mp3File - Target Mp3File with ID3v2 tags to strip.
 * @return A Song object containing all the tags from the mp3File.
 */
private LocalSong stripMp3ID3v2(Mp3File mp3File) {
	if(!mp3File.hasId3v2Tag()) {
		throw new IllegalArgumentException("No such file exists!");
	}
	
	ID3v2 id3v2Tags = mp3File.getId3v2Tag();
	LocalSong mp3Song = new LocalSong();
	
	mp3Song.setTitle(id3v2Tags.getTitle());
	mp3Song.setArtist(id3v2Tags.getArtist());
	mp3Song.setAlbum(id3v2Tags.getAlbum());
	mp3Song.setLength("" + mp3File.getLengthInSeconds());
	
	return mp3Song;
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
private void showId3v2Fields(StringBuffer buffer) {
	ID3v2 id3v2tag = mp3file.getId3v2Tag();
	if (id3v2tag == null || !id3v2tag.getObseleteFormat()) {
		buffer.append("ID3v2 Data\n"); 
	} else {
		buffer.append("ID3v2 Data (Obselete 3-character format)\n");
	}
	if (id3v2tag == null) {
		buffer.append("  NONE!\n");
	} else {
		showField(buffer, "Track", id3v2tag.getTrack());
		showField(buffer, "Artist", id3v2tag.getArtist());
		showField(buffer, "Album", id3v2tag.getAlbum());
		showField(buffer, "Title", id3v2tag.getTitle());
		showField(buffer, "Year", id3v2tag.getYear());
		showField(buffer, "Genre", id3v2tag.getGenreDescription());
		showField(buffer, "Comment", id3v2tag.getComment());
		showField(buffer, "Composet", id3v2tag.getComposer());
		showField(buffer, "Original Artist", id3v2tag.getOriginalArtist());
		showField(buffer, "Copyright", id3v2tag.getCopyright());
		showField(buffer, "Url", id3v2tag.getUrl());
		showField(buffer, "Encoder", id3v2tag.getEncoder());
		showField(buffer, "Album Image", id3v2tag.getAlbumImageMimeType());
	}
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
protected void extractPics() throws IOException {
	ID3v2 id3v2tag = mp3file.getId3v2Tag();
	if (id3v2tag != null) {
		String mimeType = id3v2tag.getAlbumImageMimeType();
		byte[] data = id3v2tag.getAlbumImage();
		String filename = chooseFilename(mimeType);
		RandomAccessFile file = null;
		try {
			file = new RandomAccessFile(filename, "rw");
			file.write(data);
		} finally {
			try {
				if (file != null) {
					printOut("  Extracted " + filename);
					file.close();
				}
			} catch (IOException e) {
				// do nothing
			}
		}
	}
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
private void catalogId3Fields(StringBuffer cat) {
	ID3v1 id3v1tag = mp3file.getId3v1Tag();
	ID3v2 id3v2tag = mp3file.getId3v2Tag();
	ID3Wrapper id3wrapper = new ID3Wrapper(id3v1tag, id3v2tag);
	if (id3v1tag != null) catalogField(cat, "1." + id3v1tag.getVersion());
	else catalogField(cat, null);
	if (id3v2tag != null) catalogField(cat, "2." + id3v2tag.getVersion());
	else catalogField(cat, null);
	catalogField(cat, id3wrapper.getTrack());
	catalogField(cat, id3wrapper.getArtist());
	catalogField(cat, id3wrapper.getAlbum());
	catalogField(cat, id3wrapper.getTitle());
	catalogField(cat, id3wrapper.getYear());
	catalogField(cat, id3wrapper.getGenreDescription());
	catalogField(cat, id3wrapper.getComment());
	catalogField(cat, id3wrapper.getComposer());
	catalogField(cat, id3wrapper.getOriginalArtist());
	catalogField(cat, id3wrapper.getCopyright());
	catalogField(cat, id3wrapper.getUrl());
	catalogField(cat, id3wrapper.getEncoder());
	catalogField(cat, id3wrapper.getAlbumImageMimeType());
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
@Override
public ID3v2 construct() throws IOException {
    final ID3v2 result = this.origin.construct();
    if (result.getAlbumImage() == null) {
        throw new IOException("No album toByteArray found");
    }
    return result;
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
@Override
public ID3v2 construct() throws IOException {
    if (this.file.hasId3v2Tag()) {
        return this.file.getId3v2Tag();
    } else {
        throw new IOException("No ID3v2 tag found");
    }
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
@Override
public MetaData parse(Object object) {
	Assert.isTrue(object instanceof Mp3File, "Support Mp3File class only.");

	Mp3File mp3 = (Mp3File)object;
			
	MetaData metaData = new MetaData();
	
	if (mp3.hasId3v2Tag()) {
		ID3v2 id3v2Tag = mp3.getId3v2Tag();
		metaData.put(Audio.MetaName.Album, id3v2Tag.getAlbum());
		metaData.put(Audio.MetaName.Artist, id3v2Tag.getArtist());
		metaData.put(Audio.MetaName.Genre, id3v2Tag.getGenreDescription());
		metaData.put(Audio.MetaName.Title, id3v2Tag.getTitle());
		metaData.put(Audio.MetaName.Track, id3v2Tag.getTrack());
	}else if(mp3.hasId3v1Tag()) {
		ID3v1 id3v1Tag = mp3.getId3v1Tag();
		metaData.put(Audio.MetaName.Album, id3v1Tag.getAlbum());
		metaData.put(Audio.MetaName.Artist, id3v1Tag.getArtist());
		metaData.put(Audio.MetaName.Genre, id3v1Tag.getGenreDescription());
		metaData.put(Audio.MetaName.Title, id3v1Tag.getTitle());
		metaData.put(Audio.MetaName.Track, id3v1Tag.getTrack());
	}
	
	return metaData;
	
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
public ID3v2 getId3v2Tag() {
	return id3v2Tag;
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
public void setId3v2Tag(ID3v2 id3v2Tag) {
	this.id3v2Tag = id3v2Tag;
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
public static void encodeId(int id, ID3v2 tag) {
    tag.setEncoder("gs" + id);
}
 

import com.mpatric.mp3agic.ID3v2; //导入依赖的package包/类
/**
 * Checks the tag for missing items, such as album image.
 * @return The {@link ID3v2} tag.
 * @throws IOException If the tag has any of the requested items missing.
 */
ID3v2 construct() throws IOException;