AMRSampleEntry.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.restcomm.media.resource.player.video.mpeg;

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

/**
 * Look 3Gpp TS 26.244 section 6.5
 * 
 * @author amit bhayani
 * 
 */
public class AMRSampleEntry extends AudioSampleEntry {

	// File Type = samr
	static byte[] TYPE = new byte[] { AsciiTable.ALPHA_s, AsciiTable.ALPHA_a, AsciiTable.ALPHA_m, AsciiTable.ALPHA_r };
	static String TYPE_S = "samr";
	static {
		bytetoTypeMap.put(TYPE, TYPE_S);
	}

	private AmrSpecificBox amrSpecificBox;

	public AMRSampleEntry(long size) {
		super(size, TYPE_S);
	}

	@Override
	protected int load(DataInputStream fin) throws IOException {
		int count = super.load(fin);
		if (count < getSize()) {
			long len = readU32(fin);
			String type = readType(fin);
			if (type.equals("damr")) {
				amrSpecificBox = new AmrSpecificBox(len, type);
				count += amrSpecificBox.load(fin);
			} else {
				throw new IOException("Unknown box=" + new String(type) + "parent = AudioSampleEntry");
			}
		}
		return count;
	}

	public AmrSpecificBox getAmrSpecificBox() {
		return amrSpecificBox;
	}

}