pulse-audio-switch.rb

pulse-audio-switch.rb

#!/usr/bin/env ruby

sink_output = `pacmd list-sinks`

sinks_index_lines = sink_output.each_line.select{|line| line =~ /index/}
sinks_indexes = sinks_index_lines.map{|index_line| Integer(index_line.strip.gsub(/[^\d]/,'')) }

# optional - for more descriptive notification message
card_names = sink_output.each_line.select{|line| line =~ /alsa.card_name/}.map{ |l| l.gsub(/.+ = "(.+)"/,'\1').strip }
card_names_dict = Hash[sinks_indexes.zip(card_names)]

# this should probably be customized by you
# I have a HDMI sink that I never use, hence I've only used the two I switch, do
# puts card_names_dict
# to check which sinkds you want to leave in
interesting_sinks = sinks_indexes.last(2)

active_sink_index = Integer(sinks_index_lines.select{|line| line =~ /\*/}.first.gsub(/[^\d]/,''))
next_sink_index = interesting_sinks.reject{|sink| sink == active_sink_index}.first

#change the default sink
`pacmd "set-default-sink #{next_sink_index}"`

# move current sinks to new one
sink_input_ids = `pacmd list-sink-inputs`.each_line.select{|line| line =~ /index/}.map{|line| line.gsub(/[^\d]/,'')}
sink_input_ids.each do |sink_id| 
  `pacmd 'move-sink-input #{sink_id} #{next_sink_index}'`
end

`notify-send -i notification-audio-volume-high --hint=string:x-canonical-private-synchronous: 'Sound output switched to #{card_names_dict[next_sink_index]}'`