switch-audio.sh

#!/usr/bin/env bash
# MIT License
#
# Copyright (c) 2025 Daniel Berg <mail@roosta.sh>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the “Software”), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
# of the Software, and to permit persons to whom the Software is furnished to do
# so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# BEGIN_DOC
# ### [switch-audio.sh](./switch-audio.sh)
#
# Switches between audio sink (output) presets using pactl. Normally used with
# a graphical menu. See menu scripts in this repo for an example.
#
#     Usage: ./switch-audio.sh [headphones|speakers|tv|mute-output|mute-input|toggle]
#       headphones: Activate headphones
#       speakers: Activate speakers
#       tv: Activate tv speakers
#       mute-output: Toggle mute default output sinks
#       mute-input: Toggle mute default input source
#       toggle: Toggle between speakers and headphones
#
# > [!NOTE]
# > This is spesific for my personal setup, script needs modification to work
# > for any setup.
#
# License [MIT](./LICENSES/MIT-LICENSE.txt)
# END_DOC

# `pactl list sinks short`
HEADPHONES="alsa_output.usb-SteelSeries_SteelSeries_Arctis_7-00.stereo-game"
SPEAKERS="alsa_output.usb-Generic_USB_Audio-00.HiFi__Speaker__sink"
TV="alsa_output.pci-0000_03_00.1.hdmi-stereo-extra3"

# get the currently active sink
CURRENT_SINK=$(pactl get-default-sink)

move_sinks() {
  SINK=$(pactl get-default-sink)
  pactl list short sink-inputs | while read -r stream; do
    stream_id=$(cut -f1 <<< "$stream")
    pactl move-sink-input "$stream_id" "$SINK"
  done
}

# Toggle function I use for a button in waybar
toggle_sinks() {
  if [ "$CURRENT_SINK" = "$SPEAKERS" ]; then
    pactl set-default-sink "$HEADPHONES"
  else
    pactl set-default-sink "$SPEAKERS"
  fi
}

# mute default sink
toggle_sink_mute() {
  pactl set-sink-mute @DEFAULT_SINK@ toggle
}

# mute default source
toggle_source_mute() {
  pactl set-source-mute @DEFAULT_SOURCE@ toggle
}

activate_headphones() {
  pactl set-default-sink "$HEADPHONES"
}

activate_speakers() {
  pactl set-default-sink "$SPEAKERS"
}

activate_tv() {
  pactl set-default-sink "$TV"
}

# Handle args
case "$1" in
  "headphones")
    activate_headphones
    ;;
  "speakers")
    activate_speakers
    ;;
  "tv")
    activate_tv
    ;;
  "mute-output")
    toggle_sink_mute
    ;;
  "mute-input")
    toggle_source_mute
    ;;
  "toggle")
    toggle_sinks
    ;;
  *)
    echo "Usage: $0 [headphones|speakers|tv|mute-output|mute-input|toggle]"
    echo "  headphones: Activate headphones"
    echo "  speakers: Activate speakers"
    echo "  tv: Activate tv speakers"
    echo "  mute-output: Toggle mute default output sinks"
    echo "  mute-input: Toggle mute default input source"
    echo "  toggle: Toggle between speakers and headphones"
    exit 1
    ;;
esac

# finally move any playing audio to new sink
move_sinks