pipewire: added 2 dummy sinks

.config/pipewire/pipewire.conf.d/10-dummy_sink_0.conf

@@ -0,0 +1,18 @@
+context.objects = [
+    {   factory = adapter
+        args = {
+            factory.name     = support.null-audio-sink
+            node.name        = "null-sink-0"
+            node.description = "Null Sink 0"
+            media.class      = Audio/Sink
+            audio.position   = [ FL FR FC LFE RL RR ]
+            monitor.channel-volumes = true
+            monitor.passthrough = true
+            adapter.auto-port-config = {
+                mode = dsp
+                monitor = true
+                position = preserve
+            }
+        }
+    }
+]

.config/pipewire/pipewire.conf.d/11-dummy_sink_1.conf

@@ -0,0 +1,18 @@
+context.objects = [
+    {   factory = adapter
+        args = {
+            factory.name     = support.null-audio-sink
+            node.name        = "null-sink-1"
+            node.description = "Null Sink 1"
+            media.class      = Audio/Sink
+            audio.position   = [ FL FR FC LFE RL RR ]
+            monitor.channel-volumes = true
+            monitor.passthrough = true
+            adapter.auto-port-config = {
+                mode = dsp
+                monitor = true
+                position = preserve
+            }
+        }
+    }
+]