--[[ Licensed under GNU General Public License v2 * (c) 2013, Luke Bonham * (c) 2010, Adrian C. <anrxc@sysphere.org> --]] local newtimer = require("lain.helpers").newtimer local read_pipe = require("lain.helpers").read_pipe local wibox = require("wibox") local string = { match = string.match, format = string.format } local setmetatable = setmetatable -- ALSA volume -- lain.widgets.alsa local alsa = { last_level = "0", last_status = "" } local function worker(args) local args = args or {} local timeout = args.timeout or 5 local settings = args.settings or function() end alsa.cmd = args.cmd or "amixer" alsa.channel = args.channel or "Master" alsa.togglechannel = args.togglechannel alsa.widget = wibox.widget.textbox('') function alsa.update() mixer = read_pipe(string.format("%s get %s", alsa.cmd, alsa.channel)) l,s = string.match(mixer, "([%d]+)%%.*%[([%l]*)") -- HDMIs can have a channel different from Master for toggling mute if alsa.togglechannel then s = string.match(read_pipe(string.format("%s get %s", alsa.cmd, alsa.togglechannel)), "%[(%a+)%]") end if alsa.last_level ~= l or alsa.last_status ~= s then volume_now = { level = l, status = s } alsa.last_level = l alsa.last_status = s widget = alsa.widget settings() end end timer_id = string.format("alsa-%s-%s", alsa.cmd, alsa.channel) newtimer(timer_id, timeout, alsa.update) return setmetatable(alsa, { __index = alsa.widget }) end return setmetatable(alsa, { __call = function(_, ...) return worker(...) end })