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Merge pull request #221 from sudo-nice/master
[etc/awesome.git] / widgets / pulseaudio.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2016, Luke Bonham                     
6                                                   
7 --]]
8
9 local read_pipe    = require("lain.helpers").read_pipe
10 local newtimer     = require("lain.helpers").newtimer
11 local wibox        = require("wibox")
12
13 local string       = { match  = string.match,
14                        format = string.format }
15
16 local setmetatable = setmetatable
17
18 -- PulseAudio volume
19 -- lain.widgets.pulseaudio
20 local pulseaudio = {}
21
22 local function worker(args)
23    local args        = args or {}
24    local timeout     = args.timeout or 5
25    local settings    = args.settings or function() end
26    local scallback   = args.scallback
27
28    pulseaudio.cmd    = args.cmd or string.format("pacmd list-sinks | sed -n -e '0,/*/d' -e '/base volume/d' -e '/volume:/p' -e '/muted:/p'")
29    pulseaudio.widget = wibox.widget.textbox('')
30
31    function pulseaudio.update()
32       if scallback then pulseaudio.cmd = scallback() end
33       local s = read_pipe(pulseaudio.cmd)
34
35       volume_now = {}
36       volume_now.left  = tonumber(string.match(s, ":.-(%d+)%%"))
37       volume_now.right = tonumber(string.match(s, ":.-(%d+)%%"))
38       volume_now.muted = string.match(s, "muted: (%S+)")
39
40       widget = pulseaudio.widget
41       settings()
42    end
43
44    newtimer(string.format("pulseaudio-%s", timeout), timeout, pulseaudio.update)
45
46    return setmetatable(pulseaudio, { __index = pulseaudio.widget })
47 end
48
49 return setmetatable(pulseaudio, { __call = function(_, ...) return worker(...) end })