1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.imaging.formats.webp.chunks;
18
19 import java.io.IOException;
20 import java.io.PrintWriter;
21
22 import org.apache.commons.imaging.ImagingException;
23 import org.apache.commons.imaging.common.ImageMetadata;
24 import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
25 import org.apache.commons.imaging.formats.tiff.TiffImageParser;
26
27 /**
28 * Exif (metadata) chunk.
29 *
30 * <pre>{@code
31 * 0 1 2 3
32 * 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
33 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
34 * | ChunkHeader('EXIF') |
35 * | |
36 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
37 * : Exif Metadata :
38 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
39 * }</pre>
40 *
41 * @see <a href="https://developers.google.com/speed/webp/docs/riff_container#metadata">Extended File Format#Metadata</a>
42 * @since 1.0-alpha4
43 */
44 public final class WebPChunkExif extends WebPChunk {
45
46 /**
47 * Create an Exif chunk.
48 *
49 * @param type chunk type.
50 * @param size chunk size.
51 * @param bytes chunk data.
52 * @throws ImagingException if the chunk data and the size provided do not match.
53 */
54 public WebPChunkExif(final int type, final int size, final byte[] bytes) throws ImagingException {
55 super(type, size, bytes);
56 }
57
58 @Override
59 public void dump(final PrintWriter pw, final int offset) throws ImagingException, IOException {
60 super.dump(pw, offset);
61 final TiffImageMetadata metadata = (TiffImageMetadata) new TiffImageParser().getMetadata(bytes);
62 for (final ImageMetadata.ImageMetadataItem item : metadata.getItems()) {
63 pw.println(item.toString(" "));
64 }
65 }
66 }