/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.clerezza.utils.imageprocessing.metadataprocessing;

import org.apache.clerezza.rdf.core.TripleCollection;


/**
 * Provides methods to extract meta data from media files.
 * 
 * @author daniel
 *
 */
public interface MetaDataProcessor {
    
    /**
     * Extract IPTC meta data from a media file.
     * 
     * @param mediaFile  the media file
     * @return  IPTC meta data
     */
    public MetaData<IptcDataSet> extractIPTC(byte[] mediaFile);
    
    /**
     * Extract EXIF meta data from a media file.
     * 
     * @param mediaFile  the media file
     * @return  EXIF meta data
     */
    public MetaData<ExifTagDataSet> extractEXIF(byte[] mediaFile);
    
    /**
     * Extract XMP meta data from a media file.
     * 
     * @param mediaFile  the media file
     * @return  XMP meta data
     */
    public TripleCollection extractXMP(byte[] mediaFile);

    /**
     * Write XMP meta data to a media file.
     *
     * @param mediaFile  the media file
     * @param metaData  the XMP triples to store.
     * @return  media file with XMP header.
     */
    public byte[] writeXMP(byte[] mediaFile,
            TripleCollection metaData);
}
