public static extern UInt32 NmGetFrameTimeStampEx(IntPtr hFrame, ref NM_TIME pTime);
public static extern UInt32 NmBuildRawFrameFromBufferEx(IntPtr DataBuffer, UInt32 ulBufferLength, UInt32 ulMedia, ref NM_TIME pTime, out IntPtr phRawFrame);
public static extern UInt32 NmGetFrameTimeStampEx(IntPtr hFrame, ref NM_TIME pTime);
public static extern UInt32 NmBuildRawFrameFromBufferEx(IntPtr DataBuffer, UInt32 ulBufferLength, UInt32 ulMedia, ref NM_TIME pTime, out IntPtr phRawFrame);