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Java library for extracting EXIF, IPTC, XMP, ICC and other metadata from image and video files.

There is a newer version: 2.19.0

/*
 * Copyright 2002-2019 Drew Noakes and contributors
 *
 *    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.
 *
 * More information about this project is available at:
 *
 *    https://drewnoakes.com/code/exif/
 *    https://github.com/drewnoakes/metadata-extractor
 */
package com.drew.metadata.mp4.boxes;

import com.drew.lang.SequentialReader;
import com.drew.metadata.mp4.Mp4BoxTypes;
import com.drew.metadata.mp4.Mp4Directory;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.UUID;

import static com.drew.metadata.mp4.media.Mp4UuidBoxDirectory.*;

public class UuidBox extends Box
{
    private byte[] userData;

    public UuidBox(SequentialReader reader, Box box) throws IOException
    {
        super(box);

        if (type.equals(Mp4BoxTypes.BOX_USER_DEFINED)) {
            usertype = getUuid(reader.getBytes(16));
        }

        userData = reader.getBytes(reader.available());
    }

    public void addMetadata(Mp4Directory directory)
    {
        directory.setString(TAG_UUID, usertype);
        directory.setByteArray(TAG_USER_DATA, userData);
    }

    private String getUuid(byte[] bytes) {
        ByteBuffer bb = ByteBuffer.wrap(bytes);
        UUID uuid = new UUID(bb.getLong(), bb.getLong());

        return uuid.toString();
    }
}