62 lines
2.2 KiB
Lua
62 lines
2.2 KiB
Lua
-- volume widget type for GNU/Linux
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-- Copyright (C) 2010 Adrian C. <anrxc@sysphere.org>
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-- Copyright (C) 2017 Brandon Hartshorn <brandonhartshorn@gmail.com>
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-- Copyright (C) 2017 mutlusun <mutlusun@github.com>
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-- Copyright (C) 2019 Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
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--
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-- This file is part of Vicious.
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--
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-- Vicious is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as
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-- published by the Free Software Foundation, either version 2 of the
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-- License, or (at your option) any later version.
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--
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-- Vicious is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with Vicious. If not, see <https://www.gnu.org/licenses/>.
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-- {{{ Grab environment
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local type = type
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local tonumber = tonumber
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local string = { match = string.match }
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local table = { concat = table.concat }
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local helpers = require("vicious.helpers")
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local spawn = require("vicious.spawn")
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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 STATE = { on = '🔉', off = '🔈' }
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local function parse(stdout, stderr, exitreason, exitcode)
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-- Capture mixer control state, e.g. [ 42 % ] [ on ]
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local volume, state = string.match(stdout, "%[([%d]+)%%%].*%[([%l]*)%]")
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-- Handle mixers without data
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if volume == nil then return {} end
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if state == "" and volume == "0" -- handle mixers without mute
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or state == "off" then -- handle muted mixers
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return { tonumber(volume), STATE.off }
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else
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return { tonumber(volume), STATE.on }
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end
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end
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function volume_linux.async(format, warg, callback)
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if not warg then return callback{} end
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if type(warg) ~= "table" then warg = { warg } end
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spawn.easy_async("amixer -M get " .. table.concat(warg, " "),
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function (...) callback(parse(...)) end)
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end
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-- }}}
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return helpers.setasyncall(volume_linux)
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