Function vmeta_frame_get_ref_count 

pub unsafe extern "C" fn vmeta_frame_get_ref_count(
    meta: *mut vmeta_frame,
) -> c_int

Read the reference counter of a vmeta_frame structure. If the reference counter is greater than INT_MAX, INT_MAX will be returned. @param meta: pointer to the frame metadata structure @return the current reference count of the metadata on success (0 or greater), negative errno value in case of error