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 * <code>class BitRateBox extends Box('btrt') {<br/>
27 * unsigned int(32) bufferSizeDB;<br/>
28 * // gives the size of the decoding buffer for<br/>
29 * // the elementary stream in bytes.<br/>
30 * unsigned int(32) maxBitrate;<br/>
31 * // gives the maximum rate in bits/second <br/>
32 * // over any window of one second.<br/>
33 * unsigned int(32) avgBitrate;<br/>
34 * // avgBitrate gives the average rate in <br/>
35 * // bits/second over the entire presentation.<br/>
36 * }</code>
37 */
38
39public final class BitRateBox extends AbstractBox {
40    public static final String TYPE = "btrt";
41
42    private long bufferSizeDb;
43    private long maxBitrate;
44    private long avgBitrate;
45
46    public BitRateBox() {
47        super(TYPE);
48    }
49
50    protected long getContentSize() {
51        return 12;
52    }
53
54    @Override
55    public void _parseDetails(ByteBuffer content) {
56        bufferSizeDb = IsoTypeReader.readUInt32(content);
57        maxBitrate = IsoTypeReader.readUInt32(content);
58        avgBitrate = IsoTypeReader.readUInt32(content);
59    }
60
61    @Override
62    protected void getContent(ByteBuffer byteBuffer) {
63        IsoTypeWriter.writeUInt32(byteBuffer, bufferSizeDb);
64        IsoTypeWriter.writeUInt32(byteBuffer, maxBitrate);
65        IsoTypeWriter.writeUInt32(byteBuffer, avgBitrate);
66    }
67
68    public long getBufferSizeDb() {
69        return bufferSizeDb;
70    }
71
72    public void setBufferSizeDb(long bufferSizeDb) {
73        this.bufferSizeDb = bufferSizeDb;
74    }
75
76    public long getMaxBitrate() {
77        return maxBitrate;
78    }
79
80    public void setMaxBitrate(long maxBitrate) {
81        this.maxBitrate = maxBitrate;
82    }
83
84    public long getAvgBitrate() {
85        return avgBitrate;
86    }
87
88    public void setAvgBitrate(long avgBitrate) {
89        this.avgBitrate = avgBitrate;
90    }
91}
92