优化语音对讲级联，目前等待zlm支持openRTPServer仅收音频

648540858

2023-02-14 d5f26faf15ec2b9fbbd5225d86297364b48876b7

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