From a7645022e18beea89ea1a0e20333a9da87b1a083 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 26 Jan 2022 07:57:05 -0700
Subject: [PATCH] triggerbox; fix i/o configuration of sidechain

---
 libs/ardour/triggerbox.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/ardour/triggerbox.cc b/libs/ardour/triggerbox.cc
index d047c07f40..6609a0edbc 100644
--- a/libs/ardour/triggerbox.cc
+++ b/libs/ardour/triggerbox.cc
@@ -2519,7 +2519,7 @@ bool
 TriggerBox::configure_io (ChanCount in, ChanCount out)
 {
 	if (_sidechain) {
-		_sidechain->configure_io (in, out);
+		_sidechain->configure_io (in, out + ChanCount (DataType::MIDI, 1));
 	}
 
 	bool ret = Processor::configure_io (in, out);