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6c1344d7539f44dbb65fb8f54fb9dc6645bd3d83
[etc/awesome.git] / widget / pulseaudio.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2016, Luke Bonham                     
6                                                   
7 --]]
8
9 local helpers = require("lain.helpers")
10 local shell   = require("awful.util").shell
11 local wibox   = require("wibox")
12 local string  = { gmatch = string.gmatch,
13                   match  = string.match,
14                   format = string.format }
15
16 -- PulseAudio volume
17 -- lain.widget.pulseaudio
18
19 local function factory(args)
20     local pulseaudio = { widget = wibox.widget.textbox() }
21     local args        = args or {}
22     local devicetype  = args.devicetype or "sink"
23     local timeout     = args.timeout or 5
24     local settings    = args.settings or function() end
25     local scallback   = args.scallback
26
27     pulseaudio.cmd    = args.cmd or "pacmd list-" .. devicetype .. "s | sed -n -e '0,/*/d' -e '/base volume/d' -e '/volume:/p' -e '/muted:/p' -e '/device\\.string/p'"
28
29     function pulseaudio.update()
30         if scallback then pulseaudio.cmd = scallback() end
31
32         helpers.async({ shell, "-c", pulseaudio.cmd }, function(s)
33             volume_now = {
34                 index = string.match(s, "index: (%S+)") or "N/A",
35                 device = string.match(s, "device.string = \"(%S+)\"") or "N/A",
36                 sink   = device, -- legacy API
37                 muted  = string.match(s, "muted: (%S+)") or "N/A"
38             }
39
40             local ch = 1
41             volume_now.channel = {}
42             for v in string.gmatch(s, ":.-(%d+)%%") do
43                 volume_now.channel[ch] = v
44                 ch = ch + 1
45             end
46
47             volume_now.left  = volume_now.channel[1] or "N/A"
48             volume_now.right = volume_now.channel[2] or "N/A"
49
50             widget = pulseaudio.widget
51
52             settings()
53         end)
54     end
55
56     helpers.newtimer("pulseaudio", timeout, pulseaudio.update)
57
58     return pulseaudio
59 end
60
61 return factory