Alsamixer with aosd_cat

mixer-osd.sh

#!/bin/bash
# By Loic Lefloch
# Many thanks to crunchbang community and other contributors
#================================================================================

# Some user-defined values
MIXERNAME="Master" # The name of the amixer master device
GRANULARITY=32 # The approximate number of possible volume positions allowed

# aosd options
FONTSIZE=40 # The size of font used by the OSD display
VOLCOLOR=#ccc # Color for volume bar
MUTECOLOR=red # Color for mute notification
FONT="Arial Black"

# Pull the numerical limit from the Mixer
LIMIT=$(amixer get $MIXERNAME | grep "Limits" | awk '{print $5}')

# Set volume increment based on granularity
let VOLINC=LIMIT/GRANULARITY
let volmod=LIMIT%GRANULARITY
let threshold=GRANULARITY/2
if [ $volmod -gt $threshold ]; then
   let VOLINC=VOLINC+1
fi

ACTION=""

case $1 in

    volup) $(amixer set $MIXERNAME $VOLINC+% > /dev/null) && ACTION="+" ;;

    voldown) $(amixer set $MIXERNAME $VOLINC-% > /dev/null) && ACTION="-" ;;

    mute) $(amixer -D pulse -q sset $MIXERNAME toggle) && ACTION="M" ;; #(amixer -D pulse -q sset $MIXERNAME toggle amixer -D pulse set Master toggle

   *)
      echo "Usage: $0 { volup | voldown | mute }"
      exit
      ;;

esac

MUTESTATUS=$(amixer get $MIXERNAME | grep "Mono:" | awk '{print $6}' | tr -d '[]')
if [ $MUTESTATUS == "off" ]; then
   OSDCOLOR="$MUTECOLOR"
else
   OSDCOLOR="$VOLCOLOR"
fi

volset=$(amixer get $MIXERNAME | grep "Mono:" | awk '{print $3}')

let volcounter=volset/$VOLINC
echo $volcounter;
echo $GRANULARITY;
if [ $volcounter -gt $GRANULARITY ]; then
   volcounter=$GRANULARITY
fi

OSDI=""
rest=$(($GRANULARITY-$volcounter-1))

while [ $volcounter -gt 0 ]
do
   OSDI=`echo $OSDI"I"`
   let volcounter=volcounter-1
done

while [ $rest -gt 0 ]
do
   OSDI=`echo $OSDI"-"`
   let rest=rest-1
done

killall aosd_cat &> /dev/null
echo "$ACTION $OSDI" | aosd_cat -n "$FONT $FONTSIZE" -u 500 -o 300 -R $OSDCOLOR -S none -f 0 -y -10 

# END