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 org.apache.commons.imaging.ImagingException;
20
21 /**
22 * ALPH (alpha) chunk.
23 *
24 * <pre>{@code
25 * 0 1 2 3
26 * 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
27 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
28 * | ChunkHeader('ALPH') |
29 * | |
30 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
31 * |Rsv| P | F | C | Alpha Bitstream... |
32 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
33 * }</pre>
34 *
35 * @see <a href="https://developers.google.com/speed/webp/docs/riff_container#alpha">Extended File Format#Alpha</a>
36 * @since 1.0-alpha4
37 */
38 public final class WebPChunkAlph extends WebPChunk {
39
40 /**
41 * Create an ALPH chunk.
42 *
43 * @param type chunk type.
44 * @param size chunk size.
45 * @param bytes chunk data.
46 * @throws ImagingException if the chunk data and the size provided do not match.
47 */
48 public WebPChunkAlph(final int type, final int size, final byte[] bytes) throws ImagingException {
49 super(type, size, bytes);
50 }
51 }