64 lines
1.6 KiB
Lua
64 lines
1.6 KiB
Lua
---------------------------------------------------
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-- Licensed under the GNU General Public License v2
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-- * (c) 2010, Adrian C. <anrxc@sysphere.org>
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---------------------------------------------------
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-- {{{ Grab environment
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local tonumber = tonumber
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local io = { popen = io.popen }
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local setmetatable = setmetatable
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local string = { match = string.match }
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local helpers = require("vicious.helpers")
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-- }}}
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-- Volume: provides volume levels and state of requested ALSA mixers
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-- vicious.widgets.volume
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local volume_linux = {}
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-- {{{ Volume widget type
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local function worker(format, warg)
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if not warg then return end
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local mixer_state = {
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["on"] = "♫", -- "",
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["off"] = "♩" -- "M"
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}
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if type(warg) ~= "table" then
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warg = { warg }
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end
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local cmd = "amixer -M get "
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for _, arg in ipairs(warg) do
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cmd = cmd .. " " .. helpers.shellquote(arg)
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end
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-- Get mixer control contents
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local f = io.popen(cmd)
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local mixer = f:read("*all")
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f:close()
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-- Capture mixer control state: [5%] ... ... [on]
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local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
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-- Handle mixers without data
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if volu == nil then
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return {0, mixer_state["off"]}
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end
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-- Handle mixers without mute
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if mute == "" and volu == "0"
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-- Handle mixers that are muted
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or mute == "off" then
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mute = mixer_state["off"]
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else
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mute = mixer_state["on"]
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end
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return {tonumber(volu), mute}
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end
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-- }}}
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return setmetatable(volume_linux, { __call = function(_, ...) return worker(...) end })
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