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 # mutes or unmutes ffmpeg stream
  24 # usage: toggle-mute [mute|unmute|mute notify]
  25 #
  26 #
  27 # gets state from $HOME/.iank-stream-muted
  28
  29 if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
  30 shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
  31 set -eE -o pipefail
  32 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" exit status: $?, PIPESTATUS: ${PIPESTATUS[*]}" >&2' ERR
  33
  34
  35 v=0
  36 notify=false
  37 # note: condition duplicated in stream-clip, myi3statsus
  38 if pgrep -fc '^ffmpeg.*icecast://source.*/fsf' >/dev/null; then
  39   if [[ $1 ]]; then
  40     case $1 in
  41       mute)
  42         v=0
  43         if [[ $2 == notify ]]; then
  44           notify=true
  45         fi
  46         ;;
  47       unmute)
  48         v=1
  49         ;;
  50       *)
  51         i3-nagbar -m "INVALID mute argument:$1" -t error -f "pango:monospace 30"
  52         ;;
  53     esac
  54
  55   else
  56     v_state=$(cat $HOME/.iank-stream-muted) ||:
  57     case $v_state in
  58       1) : ;; # default action
  59       0) v=1 ;;
  60       *)
  61         i3-nagbar -m "FAILED GETTING MUTE STATE:$v" -t error -f "pango:monospace 30"
  62         ;;
  63     esac
  64   fi
  65
  66   out=$(echo Parsed_volume_1 volume $v | zmqsend ||:)
  67   if [[ $out == "0 Success" ]]; then
  68     echo $v >$HOME/.iank-stream-muted
  69     if $notify; then
  70       dunstify -h string:x-dunst-stack-tag:alert "automuted"
  71     fi
  72   else
  73     i3-nagbar -m "FAILED ffmpeg volume:$v out:$out" -t error -f "pango:monospace 30"
  74   fi
  75 fi
  76
  77
  78 # note: i figured out how to do system input level muting, but I don't
  79 # really have a use case for it other than being doubly sure that i'm
  80 # muted. leaving it commented in case I figure out a use case, or I
  81 # find the application level muting to be unreliable.
  82
  83 # uncomment and refactor for system muting
  84 # muted=$(pactl get-source-mute @DEFAULT_SOURCE@ | awk '{print $2}' ||:)
  85 # case $muted in
  86 #   no) v=0 ;;
  87 #   yes) v=1 ;;
  88 # esac
  89
  90
  91
  92 # uncomment for system muting, and set $mute_p
  93 # pactl set-source-mute @DEFAULT_SOURCE@ $mute_p