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Just annotations of little "how to's", so I know I can find how to do something I've already done when I need to do it again, in case I don't remember anymore, which is not unlikely. Hopefully they can be useful to others, but I can't guarantee that it will work, or that it won't even make things worse.
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Silly volume control scripts for openbox that probably won't work for everyone

Posted 03-20-2016 at 11:03 PM by the dsc
Updated 03-20-2016 at 11:22 PM by the dsc

Code:
#!/bin/bash

# volume changer+notifier, using notify-send, and tested only with xfce4-notifyd
# the syntax is the same of the "end" of what you'd use in plain amixer, see "$1"
# Ex.: 5%-, 5%+, 30, 60%

com=(`amixer set "Master" $1`)

vol1=${com[20]} 

# and here's why it won't work for everybody. The output of amixer includes
# things like soundcard features, which are array elements I'm just skipping. 
# Volume happens to be the 20th for me.

vol=${vol1//[^0-9]/}

((vol>0)) && lev=low
((vol>33)) && lev=medium
((vol>63)) && lev=high

[[ "${com[22]}" == *off* ]] && lev=muted

notify-send "Volume" -t 300 -i audio-volume-$lev -h int:value:"$vol"%

Code:
#!/bin/bash

# toggles volume mute/unmute and mpc playback, if it was playing
# notify-send and obmpc.sh contains also a OSD for mpc itself

com=(`amixer -D pulse set "Master" toggle`)

if [ -e /dev/shm/mpcpaused ] ; then 
  mpc play && obmpc.sh osd & rm /dev/shm/mpcpaused 

else
  mpc | grep playing && ( mpc pause ; obmpc.sh osd & touch /dev/shm/mpcpaused )
fi


vol1=${com[25]}

vol=${vol1//[^0-9]/}

((vol>0)) && lev=low
((vol>30)) && lev=medium
((vol>60)) && lev=high

[[ "${com[26]}" == *off* ]] && lev=muted

notify-send "Volume" -t 1000 -i audio-volume-$lev -h int:value:"$vol"%
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