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;
21import com.googlecode.mp4parser.AbstractBox;
22
23import java.nio.ByteBuffer;
24
25/**
26 * Contains a reference to a track. The type of the box gives the kind of reference.
27 */
28public class TrackReferenceTypeBox extends AbstractBox {
29
30    public static final String TYPE1 = "hint";
31    public static final String TYPE2 = "cdsc";
32
33    private long[] trackIds;
34
35    public TrackReferenceTypeBox(String type) {
36        super(type);
37    }
38
39    public long[] getTrackIds() {
40        return trackIds;
41    }
42
43    @Override
44    public void _parseDetails(ByteBuffer content) {
45        int count = (int) (content.remaining() / 4);
46        trackIds = new long[count];
47        for (int i = 0; i < count; i++) {
48            trackIds[i] = IsoTypeReader.readUInt32(content);
49        }
50    }
51
52    @Override
53    protected void getContent(ByteBuffer byteBuffer) {
54        for (long trackId : trackIds) {
55            IsoTypeWriter.writeUInt32(byteBuffer, trackId);
56        }
57    }
58
59
60    protected long getContentSize() {
61        return trackIds.length * 4;
62    }
63
64    public String toString() {
65        StringBuilder buffer = new StringBuilder();
66        buffer.append("TrackReferenceTypeBox[type=").append(getType());
67        for (int i = 0; i < trackIds.length; i++) {
68            buffer.append(";trackId");
69            buffer.append(i);
70            buffer.append("=");
71            buffer.append(trackIds[i]);
72        }
73        buffer.append("]");
74        return buffer.toString();
75    }
76}
77