xf86audio

#!/bin/bash
# source: https://flx.ai/2019/bose-qc35ii-linux
# GistID: 3045abbf25bef7742047835e6aaa4788

actions="toggle|prev|next|forw|back"

# Check for correct usage
if [[ $# -ne 1 || ! "$1" =~ ^($actions)$ ]]; then
  echo "Usage: "
  echo "${0##*/} [${actions[*]}]"
  exit 1
fi

# Get focused process' name
# pid=$(xdotool getactivewindow getwindowpid)
# process=$(ps -p $pid -o comm=)
processes=($(pactl list sink-inputs | grep "application.process.binary" | sed 's/.*"\(.*\)"$/\1/'))
player_status="paused"
sign=
for process in "${processes[@]}"; do
    case $process in
    mpv)
      case $1 in
      toggle)
        xdotool key space
        ;;
      prev)
        xdotool key less
        ;;
      next)
        xdotool key greater
        ;;
      forw)
        xdotool click 4
        ;;
      back)
        xdotool click 5
        ;;
      esac
    ;;
    # Control mpd per default
    mpd)
      case $1 in
      toggle)
        mpc toggle
        player_status="$(mpc status | grep -oE '(playing|paused|stopped)')"
        [ "$player_status" == "playing" ] && sign= || sign=
        ;;
      prev)
        mpc prev
        ;;
      next)
        mpc next
        ;;
      forw)
        mpc seek +1
        ;;
      back)
        mpc seek -1
        ;;
      esac
    ;;
    # Control playerctl by default
    *)
      case $1 in
      toggle)
        playerctl play-pause
        if [ "$sign" == "" ]; then
            sign=
            [ "$(playerctl status)" == "paused" ] && sign=
        fi
        ;;
      prev)
        playerctl previous
        sign=
        ;;
      next)
        playerctl next
        sign=
        ;;
      forw)
        playerctl position 10+
        sign=
        ;;
      back)
        playerctl position 10-
        sign=
        ;;
      esac
    ;;
    esac
    notify-send -c sound "$sign"
done