115 lines
3.1 KiB
Bash
Executable file
115 lines
3.1 KiB
Bash
Executable file
#!/usr/bin/bash
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# Nuke all internal spawns when script dies
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trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM
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BARS=8;
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FRAMERATE=60;
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EQUILIZER=1;
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# Get script options
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while getopts 'b:f:m:eh' flag; do
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case "${flag}" in
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b) BARS="${OPTARG}" ;;
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f) FRAMERATE="${OPTARG}" ;;
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e) EQUILIZER=0 ;;
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h)
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echo "caway usage: caway [ options ... ]"
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echo "where options include:"
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echo
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echo " -b <integer> (Number of bars to display. Default 8)"
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echo " -f <integer> (Framerate of the equilizer. Default 60)"
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echo " -e (Disable equilizer. Default enabled)"
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echo " -h (Show help message)"
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exit 0
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;;
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esac
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done
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bar="▁▂▃▄▅▆▇█"
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dict="s/;//g;"
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# creating "dictionary" to replace char with bar + thin space " "
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i=0
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while [ $i -lt ${#bar} ]
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do
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dict="${dict}s/$i/${bar:$i:1} /g;"
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i=$((i=i+1))
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done
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# Remove last extra thin space
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dict="${dict}s/.$//;"
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clean_create_pipe() {
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if [ -p $1 ]; then
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unlink $1
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fi
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mkfifo $1
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}
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kill_pid_file() {
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if [[ -f $1 ]]; then
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while read pid; do
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{ kill "$pid" && wait "$pid"; } 2>/dev/null
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done < $1
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fi
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}
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# PID of the cava process and while loop launched from the script
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cava_waybar_pid="/tmp/cava_waybar_pid"
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# Clean pipe for cava
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cava_waybar_pipe="/tmp/cava_waybar.fifo"
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clean_create_pipe $cava_waybar_pipe
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# Custom cava config
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cava_waybar_config="/tmp/cava_waybar_config"
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echo "
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[general]
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mode = normal
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framerate = $FRAMERATE
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bars = $BARS
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[output]
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method = raw
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raw_target = $cava_waybar_pipe
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data_format = ascii
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ascii_max_range = 7
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" > $cava_waybar_config
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# Clean pipe for playerctl
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playerctl_waybar_pipe="/tmp/playerctl_waybar.fifo"
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clean_create_pipe $playerctl_waybar_pipe
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# playerctl output into playerctl_waybar_pipe
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playerctl -a metadata --format '{"text": "{{artist}} - {{title}}", "tooltip": "{{playerName}} : {{markup_escape(artist)}} - {{markup_escape(title)}}", "alt": "{{status}}", "class": "{{status}}"}' -F >$playerctl_waybar_pipe &
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# Read the playerctl o/p via its fifo pipe
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while read -r line; do
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# Kill the cava process to stop the input to cava_waybar_pipe
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kill_pid_file $cava_waybar_pid
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echo "$line" | jq --unbuffered --compact-output
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# If the class says "Playing" and equilizer is enabled
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# then show the cava equilizer
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if [[ $EQUILIZER == 1 && $(echo $line | jq -r '.class') == 'Playing' ]]; then
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# Show the playing title for 2 seconds
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sleep 2
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# cava output into cava_waybar_pipe
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cava -p $cava_waybar_config >$cava_waybar_pipe &
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# Save the PID of child process
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echo $! > $cava_waybar_pid
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# Read the cava o/p via its fifo pipe
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while read -r cmd2; do
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# Change the "text" key to bars
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echo "$line" | jq --arg a $(echo $cmd2 | sed "$dict") '.text = $a' --unbuffered --compact-output
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done < $cava_waybar_pipe & # Do this fifo read in background
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# Save the while loop PID into the file as well
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echo $! >> $cava_waybar_pid
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fi
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done < $playerctl_waybar_pipe
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