lain/widgets/pulseaudio.lua

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--[[
Licensed under GNU General Public License v2
* (c) 2016, Luke Bonham
--]]
local read_pipe = require("lain.helpers").read_pipe
local newtimer = require("lain.helpers").newtimer
local wibox = require("wibox")
local string = { match = string.match,
format = string.format }
local setmetatable = setmetatable
-- PulseAudio volume
-- lain.widgets.pulseaudio
local pulseaudio = {}
local function worker(args)
local args = args or {}
local timeout = args.timeout or 5
local settings = args.settings or function() end
pulseaudio.sink = args.sink or 0 -- user defined or first one
pulseaudio.cmd = args.cmd or string.format("pacmd list-sinks | grep -e 'index: %d' -e 'volume: front' -e 'muted'", pulseaudio.sink)
pulseaudio.widget = wibox.widget.textbox('')
function pulseaudio.update()
local s = read_pipe(pulseaudio.cmd)
volume_now = {}
volume_now.left = tonumber(string.match(s, "left.-(%d+)%%"))
volume_now.right = tonumber(string.match(s, "right.-(%d+)%%"))
volume_now.muted = string.match(s, "muted: (%S+)")
widget = pulseaudio.widget
settings()
end
newtimer(string.format("pulseaudio-%s", pulseaudio.sink), timeout, pulseaudio.update)
return setmetatable(pulseaudio, { __index = pulseaudio.widget })
end
return setmetatable(pulseaudio, { __call = function(_, ...) return worker(...) end })