From bec20fc054b0c42614923911f636788c02fb1a71 Mon Sep 17 00:00:00 2001
From: Julian Bouzas <julian.bouzas@collabora.com>
Date: Mon, 8 Dec 2025 09:24:07 -0500
Subject: [PATCH] create-item: Only configure audio device sink nodes in MONO

This allows multi channel mixing in the graph, even if MONO is enabled.
---
 po/conf.pot                      | 2 +-
 src/config/wireplumber.conf      | 2 +-
 src/scripts/node/create-item.lua | 2 ++
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/po/conf.pot b/po/conf.pot
index 7512585a..13641209 100644
--- a/po/conf.pot
+++ b/po/conf.pot
@@ -165,7 +165,7 @@ msgstr ""
 
 #. /wireplumber.settings.schema/node.features.audio.mono/description
 #: wireplumber.conf
-msgid "Configure all audio nodes in MONO"
+msgid "Configure all audio device sink nodes in MONO"
 msgstr ""
 
 #. /wireplumber.settings.schema/node.features.audio.mono/name
diff --git a/src/config/wireplumber.conf b/src/config/wireplumber.conf
index f3b70477..ee1aa1d6 100644
--- a/src/config/wireplumber.conf
+++ b/src/config/wireplumber.conf
@@ -956,7 +956,7 @@ wireplumber.settings.schema = {
   }
   node.features.audio.mono = {
     name = "Mono"
-    description = "Configure all audio nodes in MONO"
+    description = "Configure all audio device sink nodes in MONO"
     type = "bool"
     default = false
   }
diff --git a/src/scripts/node/create-item.lua b/src/scripts/node/create-item.lua
index e395a9f3..259ebc83 100644
--- a/src/scripts/node/create-item.lua
+++ b/src/scripts/node/create-item.lua
@@ -16,6 +16,7 @@ items = {}
 function configProperties (node)
   local properties = node.properties
   local media_class = properties ["media.class"] or ""
+  local factory_name = properties ["factory.name"] or ""
 
   -- ensure a media.type is set
   if not properties ["media.type"] then
@@ -40,6 +41,7 @@ function configProperties (node)
   properties ["item.features.control-port"] =
       Settings.get_boolean ("node.features.audio.control-port")
   properties ["item.features.mono"] =
+      (factory_name == "api.alsa.pcm.sink" or factory_name == "api.bluez5.a2dp.sink") and
       Settings.get_boolean ("node.features.audio.mono")
   properties ["node.id"] = node ["bound-id"]