Trying to make a script to adjust my laptop volume.. help please

kinesis1 · 02-25-2008, 06:39 PM

Ok I am trying to figure out 1) how to make a global alias in bash, these () functions dont work and 2) how to make it so the assigned keycodes from xev perform the desired alias, below is my script:

#######################################################
## COMPAQ MUSIC VOLUME CONTROLS ## #
## - WORKS FOR ANY LAPTOP IN GENERAL ## by #
## JUST USE 'xev' TO DETERMINE THE FN ## Kinetic Labs #
## KEYCODES. socalchronic@gmail.com ## (C) GNUPL #
###################################################################
# Brightness up and down should already work #
# So just define start/stop/play/forward/reverse/www/etc #
# pressing play w/o a media player open will open it #
# to do: research how to hook into your music player #
# we will use audacious the best X music player for #
# this example! For best results stick this in ~/kde/.Autostart/! #
########### edit to suit your FN keys #############################
# NOTE: This script assumes you run ALSA. #
###################################################################

MEDIA_PLAYER="/usr/local/bin/audacious"
VOL_UP="176"
VOL_DOWN="174"
MEDIA_PLAY="162"
MEDIA_STOP="164"
MEDIA_PREV="144"
MEDIA_FOWR="153"
WWW_BROWSER="/usr/bin/firefox"
ACCESS_WWW="178"

#amixer -c 0 -- sset Master playback -5dB|grep dB|head -1|cut -d' ' -f8
alias increase_vol() {
CURRENT_VOLUME=`amixer -c 0 -- get Master playback|grep dB|head -1|cut -d' ' -f8|cut -d'[' -f2|cut -d']' -f1|cut -d'd' -f1`
NEW_VOLUME=`expr $CURRENT_VOLUME + 1`
amixer -c 0 -- sset Master playback $NEW_VOLUMEdB
}
alias decrease_vol() {
CURRENT_VOLUME=`amixer -c 0 -- get Master playback|grep dB|head -1|cut -d' ' -f8|cut -d'[' -f2|cut -d']' -f1|cut -d'd' -f1`
NEW_VOLUME=`expr $CURRENT_VOLUME - 1`
amixer -c 0 -- sset Master playback $NEW_VOLUMEdB
}
#media_play() {}
#media_stop() {}
#media_prev() {}
#media_fowr() {}
#www_browser() {}

slakmagik · 02-25-2008, 11:21 PM

I'm not sure if I understand. I enable multimedia keys in X by creating an ~/.xmodmap file that contains

Code:

...
keycode 174 = XF86AudioLowerVolume
keycode 160 = XF86AudioMute
keycode 176 = XF86AudioRaiseVolume

keycode 144 = XF86AudioPrev
keycode 164 = XF86AudioStop
keycode 162 = XF86AudioPlay
keycode 153 = XF86AudioNext
...

And then my ~/.xinitrc contains

Code:

...
# activate some weird keys
if [ -r ~/.xmodmap ]; then
    xmodmap ~/.xmodmap
fi
...

And then my ~/.fvwm/config contains

Code:

...
# Control the volume.
Key XF86AudioLowerVolume A N Exec exec amixer -q set PCM 5%-
Key XF86AudioMute A N Exec exec amixer -q set PCM toggle
Key XF86AudioRaiseVolume A N Exec exec amixer -q set PCM 5%+
# Control $MUSIC_DAEMON_APP
Key XF86AudioPrev A N Exec exec mocp -r
Key XF86AudioStop A N Exec exec mocp -s
Key XF86AudioPlay A N Exec exec mocp_toggle
Key XF86AudioNext A N Exec exec mocp -f
# Control XMMS/BMP/Audacious/LightningPanda.
Key XF86AudioPrev A 4 Exec exec audacious -r
Key XF86AudioStop A 4 Exec exec audacious -s
Key XF86AudioPlay A 4 Exec exec audacious -t
Key XF86AudioNext A 4 Exec exec audacious -f
...

If that's not what you're trying to do, sorry, but maybe you could restate the problem.

kinesis1 · 02-26-2008, 12:30 AM

keeping it simple, thanks ill just use that

but what's the kde equivalent of fvwm's .config where those key commands will actually work?

slakmagik · 02-26-2008, 01:47 AM

Sorry, I don't use KDE, so I don't remember. The key bindings gizmo somewhere in the control panel might work. As far as where the actual file is, I have no idea.