--- a/src/ohcredentials.hxx
+++ b/src/ohcredentials.hxx
@@ -51,7 +51,11 @@
     Internal *m{0};
 };
 
-extern bool OHCredsMaybeMorphSpecialUri(std::string& uri);
+// Check uri for special qobuz/tidal scheme and transform it to point
+// to our proxy in this case.
+// @param[out] isStreaming will be true if the uri was transformed, else false.
+// @return false for error, uri should not be used
+extern bool OHCredsMaybeMorphSpecialUri(std::string& uri, bool& isStreaming);
 
 #endif