gvar = g_variant_get_child_value(gvar_list, i);
g_variant_get(gvar, "(tt)", &p, &q);
if (srci->datatype == SR_T_RATIONAL_PERIOD)
gvar = g_variant_get_child_value(gvar_list, i);
g_variant_get(gvar, "(tt)", &p, &q);
if (srci->datatype == SR_T_RATIONAL_PERIOD)