Initial commit

lib/lain/widget/pulse.lua

@@ -0,0 +1,60 @@
+--[[
+
+     Licensed under GNU General Public License v2
+      * (c) 2016, Luca CPZ
+
+--]]
+
+local helpers = require('lain.helpers')
+local shell = require('awful.util').shell
+local wibox = require('wibox')
+local string = string
+local type = type
+
+-- PulseAudio volume
+-- lain.widget.pulse
+
+local function factory(args)
+	args = args or {}
+
+	local pulse = { widget = args.widget or wibox.widget.textbox(), device = 'N/A' }
+	local timeout = args.timeout or 5
+	local settings = args.settings or function() end
+
+	pulse.devicetype = args.devicetype or 'sink'
+	pulse.cmd = args.cmd
+		or 'pacmd list-'
+			.. pulse.devicetype
+			.. "s | sed -n -e '/*/,$!d' -e '/index/p' -e '/base volume/d' -e '/volume:/p' -e '/muted:/p' -e '/device\\.string/p'"
+
+	function pulse.update()
+		helpers.async({ shell, '-c', type(pulse.cmd) == 'string' and pulse.cmd or pulse.cmd() }, function(s)
+			volume_now = {
+				index = string.match(s, 'index: (%S+)') or 'N/A',
+				device = string.match(s, 'device.string = "(%S+)"') or 'N/A',
+				muted = string.match(s, 'muted: (%S+)') or 'N/A',
+			}
+
+			pulse.device = volume_now.index
+
+			local ch = 1
+			volume_now.channel = {}
+			for v in string.gmatch(s, ':.-(%d+)%%') do
+				volume_now.channel[ch] = v
+				ch = ch + 1
+			end
+
+			volume_now.left = volume_now.channel[1] or 'N/A'
+			volume_now.right = volume_now.channel[2] or 'N/A'
+
+			widget = pulse.widget
+			settings()
+		end)
+	end
+
+	helpers.newtimer('pulse', timeout, pulse.update)
+
+	return pulse
+end
+
+return factory