001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.imaging.formats.jpeg.segments;
018
019import java.io.ByteArrayInputStream;
020import java.io.IOException;
021import java.io.InputStream;
022import java.util.Map;
023
024import org.apache.commons.imaging.ImageReadException;
025import org.apache.commons.imaging.formats.jpeg.JpegImageParser;
026import org.apache.commons.imaging.formats.jpeg.iptc.IptcParser;
027import org.apache.commons.imaging.formats.jpeg.iptc.PhotoshopApp13Data;
028
029public class App13Segment extends AppnSegment {
030
031    public App13Segment(final JpegImageParser parser, final int marker, final byte[] segmentData)
032            throws IOException {
033        this(marker, segmentData.length, new ByteArrayInputStream(
034                segmentData));
035    }
036
037    public App13Segment(final int marker, final int markerLength,
038            final InputStream is) throws IOException {
039        super(marker, markerLength, is);
040
041        // isIPTCJpegSegment = new IptcParser().isIPTCJpegSegment(bytes);
042        // if (isIPTCJpegSegment)
043        // {
044        // /*
045        // * In practice, App13 segments are only used for Photoshop/IPTC
046        // * metadata. However, we should not treat App13 signatures without
047        // * Photoshop's signature as Photoshop/IPTC segments.
048        // */
049        // boolean verbose = false;
050        // boolean strict = false;
051        // elements.addAll(new IptcParser().parseIPTCJPEGSegment(bytes,
052        // verbose, strict));
053        // }
054    }
055
056    public boolean isPhotoshopJpegSegment() {
057        return new IptcParser().isPhotoshopJpegSegment(getSegmentData());
058    }
059
060    public PhotoshopApp13Data parsePhotoshopSegment(final Map<String, Object> params)
061            throws ImageReadException, IOException {
062        /*
063         * In practice, App13 segments are only used for Photoshop/IPTC
064         * metadata. However, we should not treat App13 signatures without
065         * Photoshop's signature as Photoshop/IPTC segments.
066         */
067        if (!isPhotoshopJpegSegment()) {
068            return null;
069        }
070
071        return new IptcParser().parsePhotoshopSegment(getSegmentData(), params);
072    }
073}