Function av_opt_flag_is_set

pub unsafe extern "C" fn av_opt_flag_is_set(
    obj: *mut c_void,
    field_name: *const c_char,
    flag_name: *const c_char,
) -> c_int

Check whether a particular flag is set in a flags field.

@param field_name the name of the flag field option @param flag_name the name of the flag to check @return non-zero if the flag is set, zero if the flag isn’t set, isn’t of the right type, or the flags field doesn’t exist.