- g_hash_table_iter_init(&iter, o->params);
- while (g_hash_table_iter_next(&iter, &key, &value)) {
- if (!strcmp(key, "width")) {
- if ((spl = strtoul(value, NULL, 10)) < 1) {
- sr_err("Invalid width.");
- return SR_ERR_ARG;
+ if (options) {
+ g_hash_table_iter_init(&iter, options);
+ while (g_hash_table_iter_next(&iter, &key, &value)) {
+ if (!strcmp(key, "width")) {
+ if (!g_variant_is_of_type(value, G_VARIANT_TYPE_UINT32)) {
+ sr_err("Invalid type for 'width' option.");
+ return SR_ERR_ARG;
+ }
+ if (!(spl = g_variant_get_uint32(value))) {
+ sr_err("Invalid width.");
+ return SR_ERR_ARG;
+ }
+ } else {
+ sr_err("Unknown option '%s'.", key);