]> git.madduck.net Git - etc/awesome.git/blobdiff - widgets/alsa.lua

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

All patches and comments are welcome. Please squash your changes to logical commits before using git-format-patch and git-send-email to patches@git.madduck.net. If you'd read over the Git project's submission guidelines and adhered to them, I'd be especially grateful.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

Merge pull request #262 from sim590/multiple-batteries-status
[etc/awesome.git] / widgets / alsa.lua
index 3e025bbd252712f8f152e65c5a6fc783ffe8348c..670765acf826e21ffd8a2454fbb08e1657464186 100644 (file)
@@ -1,65 +1,60 @@
 
 --[[
-                                                      
-     Licensed under GNU General Public License v2     
-      * (c) 2013, Luke Bonham                         
-      * (c) 2010, Adrian C. <anrxc@sysphere.org>      
-                                                      
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2013, Luke Bonham                     
+      * (c) 2010, Adrian C. <anrxc@sysphere.org>  
+                                                  
 --]]
 
-local newtimer        = require("lain.helpers").newtimer
+local helpers      = require("lain.helpers")
+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 }
+local string       = { match  = string.match,
+                       format = string.format }
 
-local setmetatable    = setmetatable
+local setmetatable = setmetatable
 
 -- ALSA volume
 -- lain.widgets.alsa
-local alsa = {}
+local alsa = helpers.make_widget_textbox()
 
 local function worker(args)
     local args     = args or {}
     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.togglechannel = args.togglechannel
+    alsa.last_level    = "0"
+    alsa.last_status   = ""
 
     function alsa.update()
-        local f = assert(io.popen('amixer get ' .. channel))
-        local mixer = f:read("*all")
-        f:close()
+        mixer = read_pipe(string.format("%s get %s", alsa.cmd, alsa.channel))
+        l, s  = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
 
-        volume_now = {}
-
-        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"
+        -- HDMIs can have a channel different from Master for toggling mute
+        if alsa.togglechannel then
+            s = string.match(read_pipe(string.format("%s get %s", alsa.cmd, alsa.togglechannel)), "%[(%a+)%]")
         end
 
-        if volume_now.status == ""
-        then
-            if volume_now.level == "0"
-            then
-                volume_now.status = "off"
-            else
-                volume_now.status = "on"
-            end
-        end
+        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
 
-        widget = alsa.widget
-        settings()
+            widget = alsa.widget
+            settings()
+        end
     end
 
-    newtimer("alsa", timeout, alsa.update)
+    timer_id = string.format("alsa-%s-%s", alsa.cmd, alsa.channel)
+    helpers.newtimer(timer_id, timeout, alsa.update)
 
-    return setmetatable(alsa, { __index = alsa.widget })
+    return alsa
 end
 
 return setmetatable(alsa, { __call = function(_, ...) return worker(...) end })