Initialize the programming environment before calling other APIs.
BOOL NET_DVR_Init( );
Returns TURE for success, and returns FALSE for failure.
If FALSE is returned, you can call NET_DVR_GetLastError to get the error code.
The available error codes of this API are 0, 41, and 53. See details in Device Network SDK Errors.
Before initializing, you can call NET_DVR_SetSDKInitCfg to set the initialization parameters, such as supported capabilities, loading path of component libraries (only supported by Linux system), and so on.