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;
022
023import org.apache.commons.imaging.ImageReadException;
024import org.apache.commons.imaging.ImagingParameters;
025import org.apache.commons.imaging.formats.jpeg.iptc.IptcParser;
026import org.apache.commons.imaging.formats.jpeg.iptc.PhotoshopApp13Data;
027
028public class App13Segment extends AppnSegment {
029
030    public App13Segment(final int marker, final byte[] segmentData)
031            throws IOException {
032        this(marker, segmentData.length, new ByteArrayInputStream(segmentData));
033    }
034
035    public App13Segment(final int marker, final int markerLength,
036            final InputStream is) throws IOException {
037        super(marker, markerLength, is);
038
039        // isIPTCJpegSegment = new IptcParser().isIPTCJpegSegment(bytes);
040        // if (isIPTCJpegSegment)
041        // {
042        // /*
043        // * In practice, App13 segments are only used for Photoshop/IPTC
044        // * metadata. However, we should not treat App13 signatures without
045        // * Photoshop's signature as Photoshop/IPTC segments.
046        // */
047        // boolean verbose = false;
048        // boolean strict = false;
049        // elements.addAll(new IptcParser().parseIPTCJPEGSegment(bytes,
050        // verbose, strict));
051        // }
052    }
053
054    public boolean isPhotoshopJpegSegment() {
055        return new IptcParser().isPhotoshopJpegSegment(getSegmentData());
056    }
057
058    public PhotoshopApp13Data parsePhotoshopSegment(final ImagingParameters params)
059            throws ImageReadException, IOException {
060        /*
061         * In practice, App13 segments are only used for Photoshop/IPTC
062         * metadata. However, we should not treat App13 signatures without
063         * Photoshop's signature as Photoshop/IPTC segments.
064         */
065        if (!isPhotoshopJpegSegment()) {
066            return null;
067        }
068
069        return new IptcParser().parsePhotoshopSegment(getSegmentData(), params);
070    }
071}