archlinux_conf/etc/ion3/statusd_volume.lua

   1 -- statusd_volume2.lua
   2 -- Volume level and state information script
   3 -- Written by Randall Wald
   4 -- email: randy@rwald.com
   5 -- Released under the GPL
   6 --
   7 -- Based on a public domain script written by Benjamin Sigonneau
   8 --
   9 -- This script uses "amixer" to find volume information. If you don't have
  10 -- "amixer," this script will fail. Sorry.
  11 -- Though this is labeled "statusd_volume2.lua", rename it to
  12 -- "statusd_volume.lua" to make it work.
  13 --
  14 -- Available monitors:
  15 --      %volume_level   Volume level, as a percentage from 0% to 100%
  16 --      %volume_state   The string "" if unmuted, "MUTE " if muted
  17 --
  18 -- Example use:
  19 --      template="[ %date || <other stuff> || vol: %volume_level %volume state]"
  20 --      (note space between monitors but lack of space after %volume_state)
  21 -- This will print
  22 --      [ <Date> || <other stuff> || vol: 54% ]
  23 -- when unmuted but
  24 --      [ <Date> || <other stuff> || vol: 54% MUTE ]
  25 -- when muted.
  26
  27 local function get_volume()
  28    local f=io.popen('amixer -q','r')
  29    local s=f:read('*all')
  30    f:close()
  31    --local _, _, master_level, master_state = string.find(s, "%[(%d*%%)%] %[(%a*)%]")
  32    local _, _, master_level, master_state = string.find(s, "%[(%d*%%)%].*%[(%a*)%]")
  33
  34    local sound_state = ""
  35    if master_state == "off" then
  36       sound_state = "MUTE"
  37    end
  38    if master_level == nil then
  39            master_level = "FAIL"
  40    end
  41   return master_level.."", sound_state..""
  42 end
  43
  44 local function inform_volume(name, value)
  45    if statusd ~= nil then
  46       statusd.inform(name, value)
  47    else
  48       io.stdout:write(name..": "..value.."\n")
  49    end
  50 end
  51 local function inform_state(value)
  52    if statusd ~= nil then
  53       statusd.inform("volume_state", value)
  54    else
  55       io.stdout:write("volume_state"..value.."\n")
  56    end
  57 end
  58
  59 if statusd ~= nil then
  60    volume_timer = statusd.create_timer()
  61 end
  62
  63 local function update_volume()
  64    local master_level, sound_state = get_volume()
  65    inform_volume("volume_level", master_level)
  66    inform_volume("volume_state", sound_state)
  67    if statusd ~= nil then
  68       volume_timer:set(7000, update_volume)
  69    else
  70       volume_timer:set(9000, update_volume)
  71    end
  72 end
  73
  74 update_volume()