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.sampleentry;
18
19
20import com.coremedia.iso.IsoFile;
21import com.coremedia.iso.IsoTypeReader;
22import com.coremedia.iso.IsoTypeWriter;
23import com.googlecode.mp4parser.AbstractBox;
24
25import java.nio.ByteBuffer;
26
27/**
28 * AMR audio format specific subbox of an audio sample entry.
29 *
30 * @see com.coremedia.iso.boxes.sampleentry.AudioSampleEntry
31 */
32public class AmrSpecificBox extends AbstractBox {
33    public static final String TYPE = "damr";
34
35    private String vendor;
36    private int decoderVersion;
37    private int modeSet;
38    private int modeChangePeriod;
39    private int framesPerSample;
40
41    public AmrSpecificBox() {
42        super(TYPE);
43    }
44
45    public String getVendor() {
46        return vendor;
47    }
48
49    public int getDecoderVersion() {
50        return decoderVersion;
51    }
52
53    public int getModeSet() {
54        return modeSet;
55    }
56
57    public int getModeChangePeriod() {
58        return modeChangePeriod;
59    }
60
61    public int getFramesPerSample() {
62        return framesPerSample;
63    }
64
65    protected long getContentSize() {
66        return 9;
67    }
68
69    @Override
70    public void _parseDetails(ByteBuffer content) {
71        byte[] v = new byte[4];
72        content.get(v);
73        vendor = IsoFile.bytesToFourCC(v);
74
75        decoderVersion = IsoTypeReader.readUInt8(content);
76        modeSet = IsoTypeReader.readUInt16(content);
77        modeChangePeriod = IsoTypeReader.readUInt8(content);
78        framesPerSample = IsoTypeReader.readUInt8(content);
79
80    }
81
82
83    public void getContent(ByteBuffer byteBuffer) {
84        byteBuffer.put(IsoFile.fourCCtoBytes(vendor));
85        IsoTypeWriter.writeUInt8(byteBuffer, decoderVersion);
86        IsoTypeWriter.writeUInt16(byteBuffer, modeSet);
87        IsoTypeWriter.writeUInt8(byteBuffer, modeChangePeriod);
88        IsoTypeWriter.writeUInt8(byteBuffer, framesPerSample);
89    }
90
91    public String toString() {
92        StringBuilder buffer = new StringBuilder();
93        buffer.append("AmrSpecificBox[vendor=").append(getVendor());
94        buffer.append(";decoderVersion=").append(getDecoderVersion());
95        buffer.append(";modeSet=").append(getModeSet());
96        buffer.append(";modeChangePeriod=").append(getModeChangePeriod());
97        buffer.append(";framesPerSample=").append(getFramesPerSample());
98        buffer.append("]");
99        return buffer.toString();
100    }
101}
102