    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}