com.github.xingshuangs.iot.protocol.rtcp.model.RtcpSenderInfo 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.rtcp.model;
import com.github.xingshuangs.iot.common.IObjectByteArray;
import com.github.xingshuangs.iot.common.buff.ByteReadBuff;
import com.github.xingshuangs.iot.common.buff.ByteWriteBuff;
import com.github.xingshuangs.iot.utils.TimesUtil;
import lombok.Data;
import java.time.LocalDateTime;
/**
* 发送者信息
*
* @author xingshuang
*/
@Data
public class RtcpSenderInfo implements IObjectByteArray {
/**
* High timestamp.
* NTP时间包括两部分组成，高位32bit表示秒钟：从1970开始计算
*/
private long mswTimestamp;
/**
* Low timestamp.
* 低位表示剩余时间精度，一般按照1代表232皮秒来计算。
*/
private long lswTimestamp;
/**
* NTP timestamp.
* NTP时间（64bit）：NTP时间包括两部分组成，高位32bit表示秒钟：从1970开始计算；低位表示剩余时间精度，一般按照1代表232皮秒来计算。
*/
private LocalDateTime ntpTimestamp;
/**
* Rtp timestamp.
* RTP时间戳（32bit）：与RTP时间戳计算方式一致，是根据采样率进行递增，由于与RTP时间戳一致同时又知道当前的NTP时间，因此可以用于音视频时间同步使用。
*/
private LocalDateTime rtpTimestamp;
/**
* Sender packet count.
* 发送包数量（32bit）：计算已经发送的包的数量
* 从开始发送包到产生这个SR包这段时间里，发送者发送的RTP数据包的总数. SSRC改变时，这个域清零。
*/
private long senderPacketCount;
/**
* Sender octet count.
* 发送字节数（32bit）：计算已经发送的字节数量
* 从开始发送包到产生这个SR包这段时间里，发送者发送的净荷数据的总字节数（不包括头部和填充）。发送者改变其SSRC时，这个域要清零。
*/
private long senderOctetCount;
@Override
public int byteArrayLength() {
return 20;
}
@Override
public byte[] toByteArray() {
return ByteWriteBuff.newInstance(20)
.putInteger(this.mswTimestamp)
.putInteger(this.lswTimestamp)
.putInteger(TimesUtil.getNTPTotalSecond(this.rtpTimestamp))
.putInteger(this.senderPacketCount)
.putInteger(this.senderOctetCount)
.getData();
}
/**
* Parses byte array and converts it to object.
*
* @param data byte array
* @return RtcpHeader
*/
public static RtcpSenderInfo fromBytes(final byte[] data) {
return fromBytes(data, 0);
}
/**
* Parses byte array and converts it to object.
*
* @param data byte array
* @param offset index offset
* @return RtcpHeader
*/
public static RtcpSenderInfo fromBytes(final byte[] data, final int offset) {
if (data.length < 20) {
throw new IndexOutOfBoundsException("RtcpSenderInfo, data length < 20");
}
ByteReadBuff buff = new ByteReadBuff(data, offset);
RtcpSenderInfo res = new RtcpSenderInfo();
res.mswTimestamp = buff.getUInt32();
res.lswTimestamp = buff.getUInt32();
res.ntpTimestamp = TimesUtil.getNTPDateTime(res.mswTimestamp);
res.ntpTimestamp = res.ntpTimestamp.plusNanos(res.lswTimestamp * 232 / 1000);
res.rtpTimestamp = TimesUtil.getNTPDateTime(buff.getUInt32());
res.senderPacketCount = buff.getUInt32();
res.senderOctetCount = buff.getUInt32();
return res;
}
}