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-rw-r--r--src/plugin.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/plugin.c b/src/plugin.c
index bd7f89e..babb65a 100644
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -528,6 +528,31 @@ slv2_plugin_get_latency_port(SLV2Plugin p)
return slv2_value_as_int(val);
}
+
+bool
+slv2_plugin_has_feature(SLV2Plugin p,
+ const char* feature)
+{
+ assert(feature);
+
+ const char* const query = slv2_strjoin(
+ "ASK {\n"
+ " { <> lv2:optionalFeature <", feature, "> }\n"
+ " UNION\n"
+ " { <> lv2:requiredFeature <", feature, "> }\n"
+ "}\n", NULL);
+
+
+ librdf_query_results* results = slv2_plugin_query(p, query);
+ assert(librdf_query_results_is_boolean(results));
+
+ const bool ret = results && (librdf_query_results_get_boolean(results) > 0);
+
+ librdf_free_query_results(results);
+
+ return ret;
+}
+
SLV2Values
slv2_plugin_get_supported_features(SLV2Plugin p)