Audio Device Switcher

switch.py

#!/usr/bin/python2

import subprocess as sp
import sys

devhdmi	= '5'
devheadset	= '8'

storedir = "/home/chaos/bin/"
filename = storedir + ".currentdevice"

rawsp = sp.Popen(['pacmd', 'list-sink-inputs'], stdout=sp.PIPE)
rawout = rawsp.stdout

indices = [ ]
command = ['pacmd', 'move-sink-input', '$INDEX', '$DEST']

def write(fil, data):
	f = open(fil, mode='w')
	f.write(data)
	f.close()
	return 0


def read(fil):
	try:
		f = open(fil, mode='r')
	except:
		write(filename, '0')
		return '1'
	t = f.read()
	f.close()
	return t.split()[0]

for line in rawout:
	l = str(line)
	if "index" in l:
		t = l.split()[1]
		indices.append(t)

dev = read(filename)

if len(sys.argv) > 1:
	if sys.argv[1] == "current":
		if dev == "1":
			print("Headset")
		elif dev == "2":
			print("HDMI")
		else:
			print("Unknown output device ({0})".format(dev))
		sys.exit()

# Toggle device file
if dev == '1':
	write(filename, '2')
else:
	write(filename, '1')


# Set the destination of the command
if dev == '1':
	command[3] = devhdmi
else:
	command[3] = devheadset


for i in indices:
	command[2] = i
	sp.call(command)

command[2] = command[3]
command.pop()
command[1] = "set-default-sink"
sp.call(command)