1/*
2 * Copyright 2008 CoreMedia AG, Hamburg
3 *
4 * Licensed under the Apache License, Version 2.0 (the License);
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an AS IS BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.coremedia.iso.boxes;
18
19import com.coremedia.iso.IsoTypeReader;
20import com.coremedia.iso.IsoTypeWriter;
21
22import java.nio.ByteBuffer;
23
24/**
25 * The video media header contains general presentation information, independent of the coding, for video
26 * media. Note that the flags field has the value 1.
27 */
28public class VideoMediaHeaderBox extends AbstractMediaHeaderBox {
29    private int graphicsmode = 0;
30    private int[] opcolor = new int[]{0, 0, 0};
31    public static final String TYPE = "vmhd";
32
33    public VideoMediaHeaderBox() {
34        super(TYPE);
35        setFlags(1); // 1 is default.
36    }
37
38    public int getGraphicsmode() {
39        return graphicsmode;
40    }
41
42    public int[] getOpcolor() {
43        return opcolor;
44    }
45
46    protected long getContentSize() {
47        return 12;
48    }
49
50
51    @Override
52    public void _parseDetails(ByteBuffer content) {
53        parseVersionAndFlags(content);
54        graphicsmode = IsoTypeReader.readUInt16(content);
55        opcolor = new int[3];
56        for (int i = 0; i < 3; i++) {
57            opcolor[i] = IsoTypeReader.readUInt16(content);
58        }
59    }
60
61    @Override
62    protected void getContent(ByteBuffer byteBuffer) {
63        writeVersionAndFlags(byteBuffer);
64        IsoTypeWriter.writeUInt16(byteBuffer, graphicsmode);
65        for (int anOpcolor : opcolor) {
66            IsoTypeWriter.writeUInt16(byteBuffer, anOpcolor);
67        }
68    }
69
70    public String toString() {
71        return "VideoMediaHeaderBox[graphicsmode=" + getGraphicsmode() + ";opcolor0=" + getOpcolor()[0] + ";opcolor1=" + getOpcolor()[1] + ";opcolor2=" + getOpcolor()[2] + "]";
72    }
73
74    public void setOpcolor(int[] opcolor) {
75        this.opcolor = opcolor;
76    }
77
78    public void setGraphicsmode(int graphicsmode) {
79        this.graphicsmode = graphicsmode;
80    }
81}
82