public static extern int PPVPlayBackByFileNameStart(int iDevice, int iChannel, string pszFileName, uint nFileLen, ST_ACCESS_SERVER_INFO stPassbyServer, pAVDataCallBack pfnAVDataCallBack, uint nAVDataCBUsrData,
pProgressNotifyCallBack pfnProgressNotifyUser, uint nProgressCBUsrData);
public static extern int PPVConnectDeviceByACS(string pszDeviceID, ST_ACCESS_SERVER_INFO stPassbyServer, pProgressNotifyCallBack pfnProgressNotifyUser, UInt32 nUserDataForCallBack, ref EN_CONN_MODE pConnMode);