From fe3b5969ca23d2d39d7a6343239bd64cac367566 Mon Sep 17 00:00:00 2001
From: JohannesItten <mrjitten@protonmail.com>
Date: Wed, 1 Jul 2026 12:47:40 +0300
Subject: [PATCH] fix: add required grouphint tag to make_audio_flow_def

MXL FlowParser requires urn:x-nmos:tag:grouphint/v1.0 in the tags
object of every flow definition. make_audio_flow_def was missing tags
entirely, causing FlowParser.cpp:192 "Invalid group hint tag".

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 shared/FlowDef.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/shared/FlowDef.hpp b/shared/FlowDef.hpp
index 4af016c..ffd7a1f 100644
--- a/shared/FlowDef.hpp
+++ b/shared/FlowDef.hpp
@@ -65,6 +65,9 @@ inline std::string make_audio_flow_def(
         {"sample_rate", {{"numerator", sample_rate},    {"denominator", 1}}},
         {"channels",    ch_arr},
         {"bit_depth",   bit_depth},
+        {"tags", {
+            {"urn:x-nmos:tag:grouphint/v1.0", json::array({label + ":Audio"})}
+        }},
     }.dump();
 }