polybar: add pipewire buffer size module

.config/polybar/config.ini

@@ -32,7 +32,7 @@ font-0 = mononoki-12;1
 
 modules-left = ewmh
 modules-center = date
-modules-right = mpd filesystem pulseaudio xkeyboard memory cpu wlan eth
+modules-right = mpd filesystem pipewire_buffer_size pulseaudio xkeyboard memory cpu wlan eth
 
 cursor-click = pointer
 cursor-scroll = ns-resize
@@ -43,10 +43,16 @@ enable-ipc = true
 
 ; wm-restack = generic
 ; wm-restack = bspwm
-; wm-restack = i3
+wm-restack = i3
 
 ; override-redirect = true
 
+[module/pipewire_buffer_size]
+type = custom/script
+exec = ~/.config/polybar/pipewire_buffer_size.sh
+interval = 10
+click-right = ~/.config/polybar/pipewire_buffer_size.sh click
+
 [module/info-hlwm-workspaces]
 type = custom/script
 exec = ~/.config/polybar/info-hlwm-workspaces/info-hlwm-workspaces.sh

.config/polybar/pipewire_buffer_size.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+BUFFER_SIZES=("64" "128" "256" "512" "1024" "2048" "4096")
+
+current_buffer_size=$(pw-metadata -n settings 0 clock.force-quantum | grep -oP "value:'\K[0-9]+")
+
+if [[ $1 == "click" ]]; then
+    new_buffer_size=$(echo "${BUFFER_SIZES[@]}" | tr ' ' '\n' | xmenu)
+
+    if [[ -n $new_buffer_size ]]; then
+        pw-metadata -n settings 0 clock.force-quantum "$new_buffer_size"
+		current_buffer_size=$new_buffer_size
+    fi
+
+    exit 0
+fi
+
+echo "$current_buffer_size"