com.github.xingshuangs.iot.protocol.mp4.model.Mp4EsdsBox Maven / Gradle / Ivy
/*
* MIT License
*
* Copyright (c) 2021-2099 Oscura (xingshuang)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.github.xingshuangs.iot.protocol.mp4.model;
import com.github.xingshuangs.iot.common.buff.ByteWriteBuff;
import com.github.xingshuangs.iot.protocol.mp4.enums.EMp4Type;
/**
* Sample Description Box(stbl-stsd)，存放解码必须的描述信息,其也是一个container box，对于H264码流来说其包含avc1子box
*
* @author xingshuang
*/
public class Mp4EsdsBox extends Mp4Box {
/**
* 1个字节
*/
private final int version;
/**
* 3个字节
*/
private final byte[] flags;
/**
* 1字节
*/
private final int descriptorType1;
/**
* 1字节
*/
private final int length1;
/**
* 2字节
*/
private final int esId;
/**
* 1字节
*/
private final int streamPriority;
/**
* 1字节
*/
private final int descriptorType2;
/**
* 4字节
*/
private final int length2;
/**
* 1字节
*/
private final int codec;
/**
* 1字节
*/
private final int streamType;
/**
* 3字节
*/
private final byte[] bufferSize;
/**
* 4个字节
*/
private final int maxBitrate;
/**
* 4个字节
*/
private final int avgBitrate;
/**
* 1字节
*/
private final int descriptorType3;
/**
* 1字节
*/
private final int length3;
private final byte[] config;
private final byte[] lastData;
public Mp4EsdsBox(Mp4TrackInfo trackInfo) {
this.mp4Type = EMp4Type.ESDS;
this.version = 0;
this.flags = new byte[3];
this.descriptorType1 = 0x03;
this.length1 = 0x17 + trackInfo.getConfig().length;
this.esId = 1;
this.streamPriority = 0;
this.descriptorType2 = 0x04;
this.length2 = 0x0f + trackInfo.getConfig().length;
this.codec = 0x40;
this.streamType = 0x15;
this.bufferSize = new byte[3];
this.maxBitrate = 0;
this.avgBitrate = 0;
this.descriptorType3 = 0x05;
this.length3 = trackInfo.getConfig().length;
this.config = trackInfo.getConfig();
this.lastData = new byte[]{0x06, 0x01, 0x02};
}
@Override
public int byteArrayLength() {
return 37 + this.config.length;
}
@Override
public byte[] toByteArray() {
int size = this.byteArrayLength();
return ByteWriteBuff.newInstance(size)
.putInteger(size)
.putBytes(this.mp4Type.getByteArray())
.putByte(this.version)
.putBytes(this.flags)
.putByte(this.descriptorType1)
.putByte(this.length1)
.putShort(this.esId)
.putByte(this.streamPriority)
.putByte(this.descriptorType2)
.putByte(this.length2)
.putByte(this.codec)
.putByte(this.streamType)
.putBytes(this.bufferSize)
.putInteger(this.maxBitrate)
.putInteger(this.avgBitrate)
.putByte(this.descriptorType3)
.putByte(this.length3)
.putBytes(this.config)
.putBytes(this.lastData)
.getData();
}
}