初始化相关参数：
{ "argument": { "appkey": "25766251", "ip": "192.168.1.22", "port": 443, "secret": "h2o6zXtzCmt8eaOaMkXb", "enableHTTPS": 1, "layout": "1x1", "playMode": 0 }, "funcName": "init" }
执行
播放相关参数：
{ "argument": { "cameraIndexCode": "2a617f752fbe4c68989e8d3975cf58f9", "ezvizDirect": 0, "gpuMode": 0, "streamMode": 0, "transMode": 1, "wndId": -1 }, "funcName": "startPreview" }
执行
返回值信息
清空