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.webp.chunks;
018
019import java.io.IOException;
020import java.io.PrintWriter;
021
022import org.apache.commons.imaging.ImagingException;
023import org.apache.commons.imaging.common.ImageMetadata;
024import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
025import org.apache.commons.imaging.formats.tiff.TiffImageParser;
026
027/**
028 * Exif (metadata) chunk.
029 *
030 * <pre>{@code
031 *  0                   1                   2                   3
032 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
033 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
034 * |                      ChunkHeader('EXIF')                      |
035 * |                                                               |
036 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
037 * :                        Exif Metadata                          :
038 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
039 * }</pre>
040 *
041 * @see <a href="https://developers.google.com/speed/webp/docs/riff_container#metadata">Extended File Format#Metadata</a>
042 * @since 1.0.0-alpha4
043 */
044public final class WebPChunkExif extends AbstractWebPChunk {
045
046    /**
047     * Create an Exif chunk.
048     *
049     * @param type  chunk type.
050     * @param size  chunk size.
051     * @param bytes chunk data.
052     * @throws ImagingException if the chunk data and the size provided do not match.
053     */
054    public WebPChunkExif(final int type, final int size, final byte[] bytes) throws ImagingException {
055        super(type, size, bytes);
056    }
057
058    @Override
059    public void dump(final PrintWriter pw, final int offset) throws ImagingException, IOException {
060        super.dump(pw, offset);
061        final TiffImageMetadata metadata = (TiffImageMetadata) new TiffImageParser().getMetadata(bytes);
062        for (final ImageMetadata.ImageMetadataItem item : metadata.getItems()) {
063            pw.println(item.toString("  "));
064        }
065    }
066}