--]]
-local newtimer = require("lain.helpers").newtimer
+local newtimer = require("lain.helpers").newtimer
+local read_pipe = require("lain.helpers").read_pipe
-local wibox = require("wibox")
+local wibox = require("wibox")
-local io = { popen = io.popen }
-local string = { match = string.match,
- format = string.format }
+local string = { match = string.match,
+ format = string.format }
-local setmetatable = setmetatable
+local setmetatable = setmetatable
-- ALSA volume
-- lain.widgets.alsa
-local alsa = {}
+local alsa = { last_level = "0", last_status = "" }
local function worker(args)
local args = args or {}
- local card = args.card or "0"
local timeout = args.timeout or 5
- local channel = args.channel or "Master"
local settings = args.settings or function() end
- alsa.widget = wibox.widget.textbox('')
+ alsa.cmd = args.cmd or "amixer"
+ alsa.channel = args.channel or "Master"
+ alsa.widget = wibox.widget.textbox('')
function alsa.update()
- local f = assert(io.popen(string.format("amixer -c %s -M get %s", card, channel)))
- local mixer = f:read("*a")
- f:close()
+ mixer = read_pipe(string.format("%s get %s", alsa.cmd, alsa.channel))
+ l,s = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
- volume_now = {}
+ 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
- volume_now.level, volume_now.status = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
-
- if volume_now.level == nil
- then
- volume_now.level = "0"
- volume_now.status = "off"
- end
-
- if volume_now.status == ""
- then
- if volume_now.level == "0"
- then
- volume_now.status = "off"
- else
- volume_now.status = "on"
- end
+ widget = alsa.widget
+ settings()
end
-
- widget = alsa.widget
- settings()
end
- newtimer("alsa", timeout, alsa.update)
+ timer_id = string.format("alsa-%s-%s", alsa.cmd, alsa.channel)
+ newtimer(timer_id, timeout, alsa.update)
return setmetatable(alsa, { __index = alsa.widget })
end