de.jarnbjo.flac.MetadataBlock Maven / Gradle / Ivy

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/*
 * $ProjectName$
 * $ProjectRevision$
 * -----------------------------------------------------------
 * $Id: MetadataBlock.java,v 1.1 2003/03/03 21:53:17 jarnbjo Exp $
 * -----------------------------------------------------------
 *
 * $Author: jarnbjo $
 *
 * Description:
 *
 * Copyright 2002-2003 Tor-Einar Jarnbjo
 * -----------------------------------------------------------
 *
 * Change History
 * -----------------------------------------------------------
 * $Log: MetadataBlock.java,v $
 * Revision 1.1  2003/03/03 21:53:17  jarnbjo
 * no message
 */
package de.jarnbjo.flac;

import de.jarnbjo.util.io.BitInputStream;
import java.io.IOException;

public abstract class MetadataBlock {
    private static final int STREAMINFO = 0;
    private static final int PADDING = 1;
    private static final int APPLICATION = 2;
    private static final int SEEKTABLE = 3;
    private static final int VORBIS_COMMENT = 4;

    private boolean lastBlock;

    public static MetadataBlock createInstance(BitInputStream source)
            throws IOException {
        boolean lb = source.getBit();

        int blockType = source.getInt(7);

        MetadataBlock mb;

        switch (blockType) {
            // BLOCK_TYPE
            case STREAMINFO:
                mb = new StreamInfo(source);
                mb.lastBlock = lb;
                return mb;
            case SEEKTABLE:
                mb = new SeekTable(source);
                mb.lastBlock = lb;
                return mb;
            case VORBIS_COMMENT:
                mb = new VorbisComment(source);
                mb.lastBlock = lb;
                return mb;
            case PADDING:
                mb = new Padding(source);
                mb.lastBlock = lb;
                return mb;
            case APPLICATION:
                mb = new Application(source);
                mb.lastBlock = lb;
                return mb;
            default:
        }

        throw new FlacFormatException("Unsupported block type " + blockType);
    }

    boolean isLastBlock() {
        return lastBlock;
    }
}