scripts/alsa_mute.sh

   1 #!/bin/sh
   2 # alsa_mute.sh -- alsa muting script for vlock,
   3 #                 the VT locking program for linux
   4 #
   5 # This program is copyright (C) 2007 Frank Benkstein, and is free software.  It
   6 # comes without any warranty, to the extent permitted by applicable law.  You
   7 # can redistribute it and/or modify it under the terms of the Do What The Fuck
   8 # You Want To Public License, Version 2, as published by Sam Hocevar.  See
   9 # http://sam.zoy.org/wtfpl/COPYING for more details.
  10
  11 set -e
  12
  13 DEPENDS="all"
  14
  15 hooks() {
  16   while read hook_name ; do
  17     case "${hook_name}" in
  18       vlock_start)
  19         amixer -q set Master mute
  20       ;;
  21       vlock_end)
  22         amixer -q set Master unmute
  23       ;;
  24     esac
  25   done
  26 }
  27
  28 if [ $# -ne 1 ] ; then
  29   echo >&2 "Usage: $0 <command>"
  30   exit 1
  31 fi
  32
  33 case "$1" in
  34   hooks)
  35     hooks
  36   ;;
  37   preceeds)
  38     echo "${PRECEEDS}"
  39   ;;
  40   succeeds)
  41     echo "${SUCCEEDS}"
  42   ;;
  43   requires)
  44     echo "${REQUIRES}"
  45   ;;
  46   needs)
  47     echo "${NEEDS}"
  48   ;;
  49   depends)
  50     echo "${DEPENDS}"
  51   ;;
  52   conflicts)
  53     echo "${CONFLICTS}"
  54   ;;
  55   *)
  56     echo >&2 "$0: unknown command '$1'"
  57     exit 1
  58   ;;
  59 esac