org.mp4parser.boxes.iso14496.part12.MovieExtendsHeaderBox Maven / Gradle / Ivy

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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)

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/*
 * Copyright 2009 castLabs GmbH, Berlin
 *
 * Licensed under the Apache License, Version 2.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.mp4parser.boxes.iso14496.part12;

import org.mp4parser.support.AbstractFullBox;
import org.mp4parser.tools.IsoTypeReader;
import org.mp4parser.tools.IsoTypeWriter;

import java.nio.ByteBuffer;

/**
 * 4cc = "{@value #TYPE}"
 * aligned(8) class MovieExtendsHeaderBox extends FullBox('mehd', version, 0) {
 * if (version==1) {
 * unsigned int(64) fragment_duration;
 * } else { // version==0
 * unsigned int(32) fragment_duration;
 * }
 * }
 */
public class MovieExtendsHeaderBox extends AbstractFullBox {
    public static final String TYPE = "mehd";
    private long fragmentDuration;

    public MovieExtendsHeaderBox() {
        super(TYPE);
    }

    @Override
    protected long getContentSize() {
        return getVersion() == 1 ? 12 : 8;
    }

    @Override
    public void _parseDetails(ByteBuffer content) {
        parseVersionAndFlags(content);
        fragmentDuration = getVersion() == 1 ? IsoTypeReader.readUInt64(content) : IsoTypeReader.readUInt32(content);
    }


    @Override
    protected void getContent(ByteBuffer byteBuffer) {
        writeVersionAndFlags(byteBuffer);
        if (getVersion() == 1) {
            IsoTypeWriter.writeUInt64(byteBuffer, fragmentDuration);
        } else {
            IsoTypeWriter.writeUInt32(byteBuffer, fragmentDuration);
        }
    }

    public long getFragmentDuration() {
        return fragmentDuration;
    }

    public void setFragmentDuration(long fragmentDuration) {
        this.fragmentDuration = fragmentDuration;
    }
}