#!/bin/bash

	# this version works with ALSA. hacked out on debian/woody, but
	# should work anywhere.
function read_volume() {
	#aumix-minimal -vq | cut -d\  -f 3
	setmixer -V | grep "vol" | cut -d \- -f 2 | cut -d , -f 1
}

VOLUME=`read_volume`

echo "LABEL Volume($VOLUME%)"
echo "LABEL_UP +"
echo "LABEL_DOWN -"
echo "OK"

read press
echo "OK"

while read cmd arg; do
  case $cmd in
    PRESS) exit 0;;
    TURN)  VOLUME=`expr $VOLUME + $arg \* 10`
	   if [ $VOLUME -lt 0 ]; then VOLUME=0; echo "LABEL_DOWN "; fi
           if [ $VOLUME -gt 100 ]; then VOLUME=100; echo "LABEL_UP "; fi
		
	   #aumix-minimal -v$VOLUME
	   setmixer vol $VOLUME
		
		# percentage gets scaled to a number 0-31, so we read_volume 
		# again to get the actual percentage. 
		VOLUME=`read_volume`
		# it's possible to read/set on the 0-31 scale, but % is more 
		# intuitive. 32 steps is a lot of wheel-spinning,
		# and probably more fine-grained than is useful.
           echo "LABEL Volume($VOLUME%)"
				   echo "OK"
           ;;
  esac
done