/*
 * Mobicents, Communications Middleware
 * 
 * Copyright (c) 2008, Red Hat Middleware LLC or third-party
 * contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Middleware LLC.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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 distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 *
 * Boston, MA  02110-1301  USA
 */
package org.mobicents.media.server.impl.resource.video;

import java.io.DataInputStream;
import java.io.IOException;

/**
 * 
 * @author kulikov
 */
public class TrackBox extends Box {

	private TrackHeaderBox header;
	private EditBox edit;
	private MediaBox media;

	public TrackBox(long size, String type) {
		super(size, type);
	}

	@Override
	protected int load(DataInputStream fin) throws IOException {
		int count = 8;
		int len = readLen(fin);

		String type = readType(fin);

		if (!type.equals("tkhd")) {
			throw new IOException("Track header expected");
		}

		header = new TrackHeaderBox(len, type);
		count += header.load(fin);

		while (count < getSize()) {
			len = readLen(fin);
			type = readType(fin);

			if (type.equals("edts")) {
				edit = new EditBox(len, type);
				count += edit.load(fin);
			} else {
				media = new MediaBox(len, type);
				count += media.load(fin);
			}

		}
		return (int) this.getSize();
	}
}