Android Open Source - music-tag Library Item Factory

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License

The source code is released under:

Apache License

Java Source Code

package binauld.pierre.musictag.factory;
/*  w  ww  .ja v a 2s  . c  o  m*/

import android.content.res.Resources;

import org.jaudiotagger.audio.AudioFile;
import org.jaudiotagger.audio.AudioFileIO;
import org.jaudiotagger.audio.exceptions.CannotReadException;
import org.jaudiotagger.audio.exceptions.InvalidAudioFrameException;
import org.jaudiotagger.audio.exceptions.ReadOnlyFileException;
import org.jaudiotagger.tag.TagException;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;

import binauld.pierre.musictag.decoder.AudioFileBitmapDecoder;
import binauld.pierre.musictag.decoder.BitmapDecoder;
import binauld.pierre.musictag.item.AudioItem;
import binauld.pierre.musictag.item.FolderItem;
import binauld.pierre.musictag.item.LibraryItem;
import binauld.pierre.musictag.item.NodeItem;

/**
 * Build a library item from a source file.
 * Allows activity to use item as folder or audio file.
 */
public class LibraryItemFactory {

    private BitmapDecoder folderBitmapDecoder;
    private BitmapDecoder defaultArtworkDecoder;
    private FileFilter filter;
    private Resources res;

    public LibraryItemFactory(BitmapDecoder defaultArtworkDecoder, BitmapDecoder folderBitmapDecoder, FileFilter filter, Resources res) {
        this.folderBitmapDecoder = folderBitmapDecoder;
        this.defaultArtworkDecoder = defaultArtworkDecoder;
        this.filter = filter;
        this.res = res;
    }

    /**
     * Build a library item from a source file.
     *
     * @param file   The source file. It has to be either a folder or a supported audio file.
     * @param parent The parent of the item
     * @return A library item
     * @throws IOException Exception is thrown when a problem occurs with the reading, tags or the format.
     */
    public LibraryItem build(File file, NodeItem parent) throws IOException {
        if (file.isDirectory()) {
            return buildFolderItem(file, parent);
        } else {
            AudioItem audioItem = new AudioItem();
            audioItem.setParent(parent);
            this.update(audioItem, file);

            return audioItem;
        }
    }

    public FolderItem buildFolderItem(File file, NodeItem parent) {
        FolderItem folder = new FolderItem(file, filter, parent, res);
        folder.switchDecoder(folderBitmapDecoder);
        return folder;
    }

    @Deprecated
    public void update(AudioItem updating, File file) throws IOException {
        if (!file.isDirectory()) {
            try {
                AudioFile audio = AudioFileIO.read(file);
                updating.setAudioFile(audio);
                if(null != audio.getTag().getFirstArtwork()) {
                    updating.switchDecoder(new AudioFileBitmapDecoder(audio));
                } else {
                    updating.switchDecoder(defaultArtworkDecoder);
                }

            } catch (CannotReadException | TagException | ReadOnlyFileException | InvalidAudioFrameException e) {
                throw new IOException(e);
            }
        } else {
            throw new IOException(file.getAbsolutePath() + " is not a directory.");
        }
    }
}

Java Source Code List

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