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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;
18  
19  import java.util.ArrayList;
20  import java.util.Collections;
21  import java.util.List;
22  
23  import org.apache.commons.imaging.common.GenericImageMetadata;
24  import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
25  
26  /**
27   * WebP image metadata.
28   *
29   * @since 1.0-alpha4
30   */
31  public final class WebPImageMetadata extends GenericImageMetadata {
32  
33      /**
34       * TIFF Exif metadata.
35       */
36      private final TiffImageMetadata exif;
37  
38      /**
39       * Create a new WebP image metadata object.
40       *
41       * @param exif the Exif metadata.
42       */
43      public WebPImageMetadata(final TiffImageMetadata exif) {
44          this.exif = exif;
45      }
46  
47      /**
48       * Returns the Exif metadata.
49       *
50       * @return {@code null} if no Exif metadata is available; otherwise, returns the Exif metadata.
51       */
52      public TiffImageMetadata getExif() {
53          return exif;
54      }
55  
56      @Override
57      public List<? extends ImageMetadataItem> getItems() {
58          final ArrayList<ImageMetadataItem> items = new ArrayList<>(super.getItems());
59          if (exif != null) {
60              items.addAll(exif.getItems());
61          }
62          return Collections.unmodifiableList(items);
63      }
64  }