static OPJ_OFF_T opj_skip_from_file(OPJ_OFF_T p_nb_bytes, FILE * p_user_data)
{
    if (OPJ_FSEEK(p_user_data, p_nb_bytes, SEEK_CUR)) {
        return -1;
    }

    return p_nb_bytes;
}
static OPJ_OFF_T opj_skip_from_file(OPJ_OFF_T p_nb_bytes, FILE * p_user_data)
{
    if (OPJ_FSEEK(p_user_data, p_nb_bytes, SEEK_CUR)) {
        return -1;
    }

    return p_nb_bytes;
}