maemo.org - Talk - stupid simple script for resizing image on TV

when I'm back from my vacation i visit my grandmother and i show her my photos on her tv but image are not fullscreen.
i write a stupid script to adjust tvout image size
run the script press key followed by enter
q-quit saving values
r- restore previous values ( unplug av connector will reset to stupid values )
"a" / "s" move top left corner left / right
"d" / "f" move bottom right corner left / right
"w" / "x"move top left corner up / down
"e" / "c"move bottom right corner up / down

Code:

#!/bin/sh

p="/sys/devices/platform/omapdss/overlay2/position"

s="/sys/devices/platform/omapdss/overlay2/output_size"

a=`cat /sys/devices/platform/omapdss/overlay2/output_size`

b=`cat /sys/devices/platform/omapdss/overlay2/position`

xs=${b%%,*}

ys=${b##*,}

xd=${a%%,*}

yd=${a##*,}

echo $xs,$ys $xd,$yd

restore(){

r=`cat /opt/screen_dimensions`

xs=${r%%,*}

yd=${r##*,}

r=${r%,*};r=${r#*,}

xd=${r#*,}

ys=${r%,*}

echo $xs,$ys $xd,$yd

}

scrsz(){

echo $xs,$ys > $p

echo $xd,$yd > $s

}

while [ 1 ];do

setting=$(stty -g)

key=$(dd bs=1 count=1 2> /dev/null)

#stty "$setting"

case $key in

"a")xs=$(expr $xs - 1);;

"s")xs=$(expr $xs + 1);;

"w")ys=$(expr $ys - 1);;

"x")ys=$(expr $ys + 1);;

"d")xd=$(expr $xd - 1);;

"f")xd=$(expr $xd + 1);;

"e")yd=$(expr $yd - 1);;

"c")yd=$(expr $yd + 1);;

"q")echo $xs,$ys $xd,$yd;echo $xs,$ys,$xd,$yd > /opt/screen_dimensions;exit;;

"r")restore;;

esac

scrsz

done