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Versions: 11
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Contents
# Volay module
module Volay
# Mixer module
module Mixer
# Alsa class for playing with amixer
class Alsa < Default
DEFAULT_VALUE = 2
def up(value = DEFAULT_VALUE)
command("-q set Master #{value}%+")
end
def down(value = DEFAULT_VALUE)
command("-q set Master #{value}%-")
end
def value=(value)
command("-q set Master #{value}%")
end
def toggle
command('-q set Master toggle')
end
def current
result = command('get Master')
max_value = result.match(/ 0 - (\d+)/)[1].to_i
current_percent = result.match(/\[([0-9]+)%\]\s+\[o(?:n|ff)\]/)[1].to_i
current_value = ((current_percent * max_value) / 100).to_i
current_state = result.match(/\[([a-z]+)\]/)[1].to_s
{ value: current_value,
max_value: max_value,
percent: current_percent,
muted: current_state == 'on' ? false : true }
end
private
def command(cmd)
result = Mixlib::ShellOut.new("amixer #{cmd}")
result.run_command
Volay::Config.logger.error(result.stderr) unless result.stderr.empty?
result.stdout
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems