xvol.sh

#!/usr/bin/env sh

# changes the volume (pipewire)
# indicates the current volume (notify-send)

ICON="/usr/share/icons/Adwaita/scalable/legacy/multimedia-volume-control-symbolic.svg"

function get_volume {
    # when unmuted, returns the volume (float)
    # when muted, returns zero
    volume_output=$(wpctl get-volume @DEFAULT_AUDIO_SINK@)
    if echo ${volume_output} | grep --quiet MUTED;
    then
        raw_volume=0
    else
        raw_volume=$(echo ${volume_output} | cut -d' ' -f2)  # 0.00 - 1.53
    fi

    echo 100 \* ${raw_volume} / 1.53 | bc
}

function notify {
    volume=$(get_volume)
    node_description=$(wpctl inspect @DEFAULT_AUDIO_SINK@ | grep node.description | cut -d\" -f2)
    notify-send --icon="${ICON}" --expire-time=1000 --transient --replace-id=865863 --urgency=low --hint=int:value:${volume} --hint=string:hlcolor:'#fff' "${node_description}"
}

case $1 in
up)
    wpctl set-mute @DEFAULT_AUDIO_SINK@ 0
    wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%+
    notify
    ;;
down)
    wpctl set-mute @DEFAULT_AUDIO_SINK@ 0
    wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%-
    notify
    ;;
toggle)
    wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle
    notify
    ;;
esac