Upload LOGO.
BOOL NET_DVR_UploadLogo( LONG lUserID, DWORD dwDecChanNum, LPNET_DVR_DISP_LOGOCFG lpDispLogoCfg, char *sLogoBuffer )
User ID, which is returned by NET_DVR_Login_V40.
Decoding channel No.
Parameters of LOGO, see details in structure NET_DVR_DISP_LOGOCFG.
LOGO data buffer, the maximum size is 100k, and the width and the height should be multiples of 32.
Return TRUE for success and FALSE for failure. If FALSE is returned, you can call NET_DVR_GetLastError to get the error code.