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Scripts for setting and visualizing pulseaudio volume with XMonad+xmobar

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xmonad-pulsevolume

Scripts for setting and visualizing pulseaudio volume with XMonad+xmobar (and maybe others).

Purpose

  • Easily change pulseaudio volume from xmonad
  • Provide a very simple starting point for customization.
  • Visualize volume in xmobar. Here are some snapshots of the representation in increasing volume:
     [  (mute)  ]
     [          ]
     [.         ]
     [-         ]
     [/         ]
     [/.        ]
     [/-        ]
     [//        ]
     [//.       ]
     [///-      ]
     [////.     ]
     [//////////]

Install & Use

  1. Dependencies: working xmonad, pulseaudio. For visualization: python, xmobar.

  2. Add pulse-volume.sh and show-volume.py somewhere on your $PATH.

  3. Update xmonad.hs for media buttons. I add the following keybindings:

     -- mute button
     , ((0                 , 0x1008FF12), spawn "pulse-volume.sh toggle")
    
     -- volumeup button
     , ((0                 , 0x1008FF13), spawn "pulse-volume.sh increase")
    
     -- volumedown button
     , ((0                 , 0x1008FF11), spawn "pulse-volume.sh decrease")
    
  4. Update xmobar configuation to run python script. The important thing is to add to the 'commands' array, and to the template. Here's a full example:

      Config { font = "xft:Droid Sans Mono:size=9:antialias=true"
            , bgColor = "#181818"
            , fgColor = "green"
            , position = TopW L 95
            , commands = [ Run Cpu ["-L","3","-H","50","--normal","green","--high","red"] 5
                         , Run Memory ["-t","Mem: <usedratio>%"] 5
                         , Run Date "%a %b %d %Y %H:%M:%S " "date" 1
                         , Run Com "python" ["/path/to/show-volume.py"] "vol" 1
                         , Run StdinReader
                         ]
            , sepChar = "%"
            , alignSep = "}{"
            , template = "%StdinReader% }{ %cpu% | %memory%   %vol%  <fc=#e0e0e0>%date%</fc>"
            }
    
  5. (Optional) Upon boot, I like to reset the volume to what I consider a reasonable volume and unmute. In my .xsession file I run pulse-volume.sh reset. This also ensures that ~/.mute and ~/.volume are correct (see below).

  6. Restart xmonad.

Under the hood and future work

The pulse-volume.sh script maintains two files in your home directory: ~/.volume and ~/.mute. Whenever you run this script it reads the current volume from the file and updates it appropriately (it takes a parameter "increase", "decrease", "mute", "unmute", "toggle"). It also updates pulse-volume. If this file is changed between uses of the script, the volume can jump dramatically; hence the "reset" feature to go back to a fixed volume. Obviously, it would be better to get the current volume from pulse audio itself instead of replicating state... contributions welcome!

./show-volume.py generates the graphical representation from these files. It takes no parameters -- run it from the command line to see what it does. It's very easy to hack on this to make a new visualization... let me know if you do something cool!

I expect you can use these scripts with other window managers or status bars, like dzen2. I somehow doubt there's much need -- but if you find it useful, feel free to contribute additions.

Bugs

I wrote this years ago and never really intended to release it. Yet, it's stood the test of time for me, and I automatically deploy it on several linux systems without issues.

As of March 2017, 2 years later, no significant bugs have come up (we only had issue #1 and that's been patched) and a few people have given the project a "star". So I suppose that suggests it works fine in the common case. We've yet to see any compatibility issues come up.

Use the issue tracker. For security bugs, email berkeley@berkeleychurchill.com. You can get a gpg key off my webpage at https://www.berkeleychurchill.com if you like.

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