set pipewire buffer and sample rate from systray icon

pw_meta.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import gi
gi.require_versions({'Gtk': '3.0', 'AyatanaAppIndicator3': '0.1', 'GLib': '2.0'})
from gi.repository import Gtk, GLib
from gi.repository import AyatanaAppIndicator3 as appindicator
from subprocess import check_output

buffer_sizes = [32, 64, 128, 256, 512, 1024, 2048, 4096]
allowed_sample_rates = []
setting = check_output("pw-metadata -n settings 0 clock.allowed-rates", shell=True)
values = setting.decode("UTF-8").split("value:'")[1].split("' type:")[0]
allowed_sample_rates.append(values.split("[ ")[1].split(",")[0])
allowed_sample_rates.append(values.split(", ")[1].split(" ]")[0])

current_samplerate = check_output("pw-metadata -n settings 0 clock.force-rate", shell=True)
current_samplerate = current_samplerate.decode("UTF-8").split("value:'")[1].split("' type:")[0]

current_buffer = check_output("pw-metadata -n settings 0 clock.force-quantum", shell=True)
current_buffer = current_buffer.decode("UTF-8").split("value:'")[1].split("' type:")[0]
print(f"current Samplerate: {current_samplerate}\ncurrent Buffer Size: {current_buffer}")

def main():
    indicator = appindicator.Indicator.new("customtray", "audio-card", appindicator.IndicatorCategory.APPLICATION_STATUS)
    indicator.set_status(appindicator.IndicatorStatus.ACTIVE)
    indicator.set_title("Pipewire Buffer")
    indicator.set_menu(menu())
    indicator.set_title(f"current Samplerate: {current_samplerate}\ncurrent Buffer Size: {current_buffer}")
    Gtk.main()

    
def menu():
    iconsize = 20
    menu = Gtk.Menu()

    ####menu 1 buffer ##########################################

    img = Gtk.Image()
    img.set_from_icon_name("audio-card", iconsize)    
    sub_menu_item = Gtk.ImageMenuItem(label='Buffer Size', image=img)
    
    menu.append(sub_menu_item)
    
    sub_menu = Gtk.Menu()
    
    for x in range(len(buffer_sizes)):
        img = Gtk.Image()
        img.set_from_icon_name("audio-card", iconsize)
        command_buffer = Gtk.ImageMenuItem(label=str(buffer_sizes[x]), image=img)
        command_buffer.connect('activate', buffer_activated, x)
        sub_menu.append(command_buffer)    
    
    sub_menu_item.set_submenu(sub_menu)
    
    ####menu 2 clock rate ##########################################

    img = Gtk.Image()
    img.set_from_icon_name("audio-card", iconsize)    
    sub_menu_item = Gtk.ImageMenuItem(label='Sample Rate', image=img)
    
    menu.append(sub_menu_item)
    
    sub_menu = Gtk.Menu()
    
    for x in range(len(allowed_sample_rates)):
        img = Gtk.Image()
        img.set_from_icon_name("audio-card", iconsize)
        command_rate = Gtk.ImageMenuItem(label=str(allowed_sample_rates[x]), image=img)
        command_rate.connect('activate', sample_rate_activated, x)
        sub_menu.append(command_rate)    
    
    sub_menu_item.set_submenu(sub_menu)
    
    sep = Gtk.SeparatorMenuItem()
    menu.append(sep)

    img = Gtk.Image()
    img.set_from_icon_name("application-exit", iconsize)
    exittray = Gtk.ImageMenuItem(label='Exit', image=img)
    exittray.connect('activate', quit)
    menu.append(exittray)
  
    menu.show_all()
    return menu
    
def buffer_activated(wdg, i):
    buffer = buffer_sizes[i]
    print(buffer)
    GLib.spawn_command_line_async(f"pw-metadata -n settings 0 clock.force-quantum {buffer}")
    
def sample_rate_activated(wdg, i):
    sample_rate = allowed_sample_rates[i]
    print(sample_rate)
    GLib.spawn_command_line_async(f"pw-metadata -n settings 0 clock.force-rate {sample_rate}")

def quit(_):
    Gtk.main_quit()

if __name__ == "__main__":
    main()