mplayer-waybar

I stream internet radio using mplayer and wanted to display the artist and song name in waybar/sway.

mplayer can present the artist and song name using ICY. Below, I use sed to strip all none-ICY information:

mplayer -nocache -afm ffmpeg http:/xx.xx.xx:2290/ |& sed -ne "s/^[[:space:]]*ICY Info: StreamTitle='[[:space:]]*//" -e "s/';//p"

I append the following to the previous command to send the string to a named pipe (see mkfifo <filename>):

> /tmp/way-bar-radio-fifo

In waybar's config I have:

"custom/mplayer": {
  "exec": "~/bin/waybar-radio.sh",
  "interval": 0,
  "format": "{}", 
  "tooltip": false
}

And ~/bin/waybar-radio.sh contains:

#!/bin/bash
pipe=/tmp/way-bar-radio-fifo
[[ -f $pipe ]] || mkfifo $pipe
trap "rm -f $pipe" EXIT

while read; do echo "$REPLY"; done 0<> $pipe

That's it! This worked for me.