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