修复国标点播下级平台，ssrc更新的时单端口错误更新rtpserver的问题

648540858

2023-05-04 381c3bdc2079ece5147cf4cee004e9071edadf7a

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package com.genersoft.iot.vmp.service.bean;
 
public interface PlayBackCallback<T> {
 
    void call(PlayBackResult<T> msg);
 
}