Function avpriv_request_sample

pub unsafe extern "C" fn avpriv_request_sample(
    avc: *mut c_void,
    msg: *const c_char,
    ...
)

Log a generic warning message about a missing feature. Additionally request that a sample showcasing the feature be uploaded.

@param[in] avc a pointer to an arbitrary struct of which the first field is a pointer to an AVClass struct @param[in] msg string containing the name of the missing feature