From 22a2cb06245b5679859e2571907a8887b12579ff Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 30 Sep 2024 23:36:36 +0200
Subject: [PATCH] Ignore inactive routes for pre-roll sub-cycles

---
 libs/ardour/session_process.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libs/ardour/session_process.cc b/libs/ardour/session_process.cc
index 1335464731..00ecb4b87d 100644
--- a/libs/ardour/session_process.cc
+++ b/libs/ardour/session_process.cc
@@ -348,6 +348,9 @@ Session::calc_preroll_subcycle (samplecnt_t ns) const
 {
 	std::shared_ptr<RouteList const> r = routes.reader ();
 	for (auto const& i : *r) {
+		if (!i->active ()) {
+			continue;
+		}
 		samplecnt_t route_offset = i->playback_latency ();
 		if (_remaining_latency_preroll > route_offset + ns) {
 			/* route will no-roll for complete pre-roll cycle */