public extern static uint Kdm_StartRecordPlay(IntPtr pMcuHandle, UInt32 dwTaskID, UInt32 dwPlayTime, SPARAM stSparam, CB_SDKMEDIA tCbSdkMedia, ref UInt32 pErrorCode);
public extern static uint Kdm_PlayRecordBySETime(IntPtr pMcuHandle, UInt32 dwTaskID, TRecordPlayInfo tRecordPlayInfo, CB_SDKMEDIA tCbSdkMedia, ref uint pErrorCode);
// real stream public extern static uint Kdm_StartRealPlay(IntPtr pMcuHandle, DEVCHN tDevChn, SPARAM tStreamParam, CB_SDKMEDIA tCbSdkMedia, ref uint pErrorCode);