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;
018
019import java.util.ArrayList;
020import java.util.Collections;
021import java.util.List;
022
023import org.apache.commons.imaging.common.GenericImageMetadata;
024import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
025
026/**
027 * WebP image metadata.
028 *
029 * @since 1.0-alpha4
030 */
031public final class WebPImageMetadata extends GenericImageMetadata {
032
033    /**
034     * TIFF Exif metadata.
035     */
036    private final TiffImageMetadata exif;
037
038    /**
039     * Create a new WebP image metadata object.
040     *
041     * @param exif the Exif metadata.
042     */
043    public WebPImageMetadata(final TiffImageMetadata exif) {
044        this.exif = exif;
045    }
046
047    /**
048     * Returns the Exif metadata.
049     *
050     * @return {@code null} if no Exif metadata is available; otherwise, returns the Exif metadata.
051     */
052    public TiffImageMetadata getExif() {
053        return exif;
054    }
055
056    @Override
057    public List<? extends ImageMetadataItem> getItems() {
058        final ArrayList<ImageMetadataItem> items = new ArrayList<>(super.getItems());
059        if (exif != null) {
060            items.addAll(exif.getItems());
061        }
062        return Collections.unmodifiableList(items);
063    }
064}