Dad's radio thing

Dad wants me to code up a little raspberry pi project to play kexp radio i guess.

Fetch KEXP audio stream and output to headphone jack.

Ideas

Web dashboard

  • See "now playing" info.

  • Error log.

Notes

KEXP API

  • https://api.kexp.org/

  • Browser calls /getsteamingurl which returns a JSON object. Field sg-url is a URL to an MP3 stream.

  • That URL can be curled into FFplay, e.g. curl «URL» | ffplay -f mp3 -i pipe:

  #!nix-shell -i bash -p ffmpeg curl
  set -e

  curl

  • Since the API is entirely undocumented, I think it may be best to instead use a headless Firefox script.

  • It looks like the URL https://kexp-mp3-128.streamguys1.com/kexp128.mp3 is hard-coded into the site. I'd been working under the impression of a far more volatile system! This may be way easier than I'd anticipated.

  • getStreamInfo seems to be called every refreshSeconds (hard-coded to 30). This is easily observed in the browser's network logs.

  • I think this is getting a little silly. Project on pause until I question Dad about why he can't just plug his computer into the speakers.

References