Meta.java

/*
 * myLib - https://github.com/taktod/myLib
 * Copyright (c) 2014 ttProject. All rights reserved.
 * 
 * Licensed under The MIT license.
 */
package com.ttProject.container.mp4.type;

import org.apache.log4j.Logger;

import com.ttProject.container.IContainer;
import com.ttProject.container.mp4.Mp4Atom;
import com.ttProject.container.mp4.Type;
import com.ttProject.nio.channels.IReadChannel;
import com.ttProject.unit.extra.BitLoader;
import com.ttProject.unit.extra.bit.Bit24;
import com.ttProject.unit.extra.bit.Bit32;
import com.ttProject.unit.extra.bit.Bit8;

/**
 * metaの定義
 * @author taktod
 */
public class Meta extends Mp4Atom {
	/** ロガー */
	private Logger logger = Logger.getLogger(Meta.class);
	private Bit8  version = new Bit8();
	private Bit24 flags   = new Bit24();
	/**
	 * コンストラクタ
	 * @param size
	 * @param name
	 */
	public Meta(Bit32 size, Bit32 name) {
		super(size, name);
	}
	/**
	 * コンストラクタ
	 */
	public Meta() {
		super(new Bit32(), Type.getTypeBit(Type.Meta));
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	public void minimumLoad(IReadChannel channel) throws Exception {
		super.minimumLoad(channel);
		BitLoader loader = new BitLoader(channel);
		loader.load(version, flags);
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	public void load(IReadChannel channel) throws Exception {
		int targetSize = getSize() - 12;
		IContainer container = null;
		while(targetSize > 0 && (container = getMp4AtomReader().read(channel)) != null) {
			targetSize -= container.getSize();
		}
		super.load(channel);
	}
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void requestUpdate() throws Exception {
	}
}