Function vdef_coded_format_from_str 

pub unsafe extern "C" fn vdef_coded_format_from_str(
    str_: *const c_char,
    format: *mut vdef_coded_format,
) -> c_int

Fill a struct vdef_coded_format from a string. The case is ignored. @param str: raw format name to convert @param format: raw format to fill @return 0 on success, negative errno value in case of error