iankelling.org Git - distro-setup/blob - toggle-mute

   1 #!/bin/bash
   2 # I, Ian Kelling, follow the GNU license recommendations at
   3 # https://www.gnu.org/licenses/license-recommendations.en.html. They
   4 # recommend that small programs, < 300 lines, be licensed under the
   5 # Apache License 2.0. This file contains or is part of one or more small
   6 # programs. If a small program grows beyond 300 lines, I plan to change
   7 # to a recommended GPL license.
   8
   9 # Copyright 2024 Ian Kelling
  10
  11 # Licensed under the Apache License, Version 2.0 (the "License");
  12 # you may not use this file except in compliance with the License.
  13 # You may obtain a copy of the License at
  14
  15 #     http://www.apache.org/licenses/LICENSE-2.0
  16
  17 # Unless required by applicable law or agreed to in writing, software
  18 # distributed under the License is distributed on an "AS IS" BASIS,
  19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20 # See the License for the specific language governing permissions and
  21 # limitations under the License.
  22
  23
  24 if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
  25 shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
  26 set -eE -o pipefail
  27 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" exit status: $?, PIPESTATUS: ${PIPESTATUS[*]}" >&2' ERR
  28
  29
  30 mute=true
  31 volume_level=0
  32
  33 # mute / unmute instead of toggle.
  34 if [[ $1 ]]; then
  35   case $1 in
  36     mute)
  37       mute=true
  38       ;;
  39     unmute)
  40       mute=false
  41       ;;
  42   esac
  43 else
  44
  45   muted=$(pactl get-source-mute @DEFAULT_SOURCE@ | awk '{print $2}' ||:)
  46   case $muted in
  47     no) : ;;
  48     yes) mute=false; volume_level=1 ;;
  49     *)
  50       i3-nagbar -m "FAILED TO GET PULSE MUTE STATE" -t error -f "pango:monospace 30"
  51       ;;
  52   esac
  53 fi
  54
  55 # we double mute here because it could be useful, and I figured out how
  56 # and feel like using what I know.
  57
  58 pactl set-source-mute @DEFAULT_SOURCE@ $mute
  59
  60 # note: condition duplicated in stream-clip, myi3statsus
  61 if pgrep -fc '^ffmpeg.*icecast://source.*/fsf' >/dev/null; then
  62   out=$(echo Parsed_volume_1 volume $volume_level | zmqsend ||:)
  63   if [[ $out != "0 Success" ]]; then
  64     i3-nagbar -m "FAILED to set ffmpeg volume to $volume_level" -t error -f "pango:monospace 30"
  65   fi
  66 fi