From 964916722c17fe566ddb797ccac2ecb9e54a098f Mon Sep 17 00:00:00 2001
From: Sheldon Lee <sheldon@sheldonlee.com>
Date: Wed, 12 Apr 2023 03:43:17 +0100
Subject: [PATCH] Add script to link pipewire sources/mics

---
 .config/scripts/pipewire/link-virtual-mic.sh | 71 ++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100755 .config/scripts/pipewire/link-virtual-mic.sh

diff --git a/.config/scripts/pipewire/link-virtual-mic.sh b/.config/scripts/pipewire/link-virtual-mic.sh
new file mode 100755
index 0000000..32d567c
--- /dev/null
+++ b/.config/scripts/pipewire/link-virtual-mic.sh
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+# See https://superuser.com/questions/1675877/how-to-create-a-new-pipewire-virtual-device-that-to-combines-an-real-input-and-o
+
+declare -A mapping
+declare -A mappingDetach
+
+# Map various audio outputs to be inputs to other sinks:
+#
+# Loopback Monitor   -\
+#                      -> Combined Sink/Source -> Virtual Microphone -> Voice software
+# rnnoise mic output -/
+mapping+=(
+	# Link loopback and mic to combined sink
+	["loopback:monitor_FL"]="mixed-mic:input_FL"
+	["loopback:monitor_FR"]="mixed-mic:input_FR"
+
+	#["output\.filter-chain.*:capture_1"]="mixed-mic:input_FL"
+	#["output\.filter-chain.*:capture_2"]="mixed-mic:input_FR"
+	["output\.rnnoise_source:capture_1"]="mixed-mic:input_FL"
+	["output\.rnnoise_source:capture_2"]="mixed-mic:input_FR"
+	# Link combined sink to virtual mic
+	#["combined-sink:monitor_FL"]="mixed-mic:input_FL"
+	#["combined-sink:monitor_FR"]="mixed-mic:input_FR"
+)
+
+mappingDetach+=(
+	["output\.rnnoise_source:capture_1"]="mixed-mic:input_FL"
+	["output\.rnnoise_source:capture_2"]="mixed-mic:input_FR"
+)
+
+completed=false
+tries=0
+
+if [[ "$1" == "--disconnect" ]] || [[ "$1" == "-d" ]]; then
+	for key in ${!mapping[@]}; do
+		value=${mapping[${key}]}
+
+		tmp=$(pw-link -o | grep -e ${key}) || break
+		output=$(echo $tmp | head -n1)
+
+		tmp=$(pw-link -i | grep -e ${value}) || break
+		input=$(echo $tmp | head -n1)
+
+		pw-link -d ${key} ${input} &> /dev/null
+	done
+	exit
+fi
+
+while not $completed && [ "$tries" -lt "20" ]; do
+	for key in ${!mapping[@]}; do
+		completed=false
+		value=${mapping[${key}]}
+
+		# Check if the outpts and inputs exist before trying to link them, otherwise causes issues.
+		tmp=$(pw-link -o | grep -e ${key}) || break
+		output=$(echo $tmp | head -n1)
+
+		tmp=$(pw-link -i | grep -e ${value}) || break
+		input=$(echo $tmp | head -n1)
+
+		if [[ "$1" == "--disconnect-all" ]] || [[ "$1" == "-da" ]]; then
+			pw-link -d ${output} ${input} &> /dev/null
+		else
+			pw-link ${output} ${input} &> /dev/null
+		fi
+		completed=true
+	done
+	sleep 1
+	tries=$((tries+1))
+done