DecoderInfo.java

/*
 *  Copyright (C) 2011 in-somnia
 * 
 *  This file is part of JAAD.
 * 
 *  JAAD 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 3 of the 
 *  License, or (at your option) any later version.
 *
 *  JAAD 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 library.
 *  If not, see <http://www.gnu.org/licenses/>.
 */
package net.sourceforge.jaad.mp4.api;

import net.sourceforge.jaad.mp4.api.codec.*;
import net.sourceforge.jaad.mp4.boxes.BoxTypes;
import net.sourceforge.jaad.mp4.boxes.impl.sampleentries.codec.*;

/**
 * The <code>DecoderInfo</code> object contains the neccessary data to 
 * initialize a decoder. A track either contains a <code>DecoderInfo</code> or a
 * byte-Array called the 'DecoderSpecificInfo', which is e.g. used for AAC.
 * 
 * The <code>DecoderInfo</code> object received from a track is a subclass of 
 * this class depending on the <code>Codec</code>.
 * 
 * <code>
 * AudioTrack track = (AudioTrack) movie.getTrack(AudioCodec.AC3);
 * AC3DecoderInfo info = (AC3DecoderInfo) track.getDecoderInfo();
 * </code>
 * 
 * @author in-somnia
 */
public abstract class DecoderInfo {

	static DecoderInfo parse(CodecSpecificBox css) {
		final long l = css.getType();

		final DecoderInfo info;
		if(l==BoxTypes.H263_SPECIFIC_BOX) info = new H263DecoderInfo(css);
		else if(l==BoxTypes.AMR_SPECIFIC_BOX) info = new AMRDecoderInfo(css);
		else if(l==BoxTypes.EVRC_SPECIFIC_BOX) info = new EVRCDecoderInfo(css);
		else if(l==BoxTypes.QCELP_SPECIFIC_BOX) info = new QCELPDecoderInfo(css);
		else if(l==BoxTypes.SMV_SPECIFIC_BOX) info = new SMVDecoderInfo(css);
		else if(l==BoxTypes.AVC_SPECIFIC_BOX) info = new AVCDecoderInfo(css);
		else if(l==BoxTypes.AC3_SPECIFIC_BOX) info = new AC3DecoderInfo(css);
		else if(l==BoxTypes.EAC3_SPECIFIC_BOX) info = new EAC3DecoderInfo(css);
		else info = new UnknownDecoderInfo();
		return info;
	}

	private static class UnknownDecoderInfo extends DecoderInfo {
	}
}