song-id-site

Goal here is to develop a small website with one page, running on a raspi that is also hooked up via USB to a turntable. The one page when hit will listen in to the turntable audio and make a call to the Shazam API, then return the track, artist and album art in the page.

This raspi is also running darkice/icecast to stream the audio, which Sonos hooks into to play over Sonos. But Sonos cannot show audio metadata.

The purpose here is to provide a way to show current audio info via webpage, since Sonos does not support metadata for custom streams.

Shazam support is owed to:

https://github.com/marin-m/SongRec which showed that it is actually possible to use the Shazam API directly without ShazamKit

https://github.com/AlekseyMartynov/shazam-for-real/ which I used to actually get it working in .NET, with some tweaks

Ongoing research links:

https://stackoverflow.com/questions/13793514/monodevelop-naudio-ubuntu-linux-tells-me-winmm-dll-not-found https://medium.com/@niteshsinghal85/using-channels-for-asynchronous-queuing-in-c-ed96c51d4576 https://learn.microsoft.com/en-us/dotnet/core/docker/build-container?tabs=windows&pivots=dotnet-8-0 https://devblogs.microsoft.com/dotnet/improving-multiplatform-container-support/ https://learn.microsoft.com/en-us/aspnet/core/security/app-secrets?view=aspnetcore-8.0&tabs=windows

Open issues

• how to get audio on linux, naudio only supports windows
  • [DONE]look into how songrec does this
  • see if can do this by extending naudio
    • https://stackoverflow.com/questions/13793514/monodevelop-naudio-ubuntu-linux-tells-me-winmm-dll-not-found
  • [THIS] Alternative?: https://github.com/ManagedBass/ManagedBass
    • ARM64 binaries for rpi https://www.un4seen.com/forum/?topic=13804 don't use softfp version, use hardfp, maybe aarch64
• [DONE] Convert console app into library for website to consume
• learn angular enough to get basic page working Using Blazor instead
• how to run the site on raspi
  • run via docker
    • https://hub.docker.com/_/microsoft-dotnet
    • https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/docker/building-net-docker-images?view=aspnetcore-7.0

TODO

• More Docker support

  • Docker Compose template, with var for setting default audio device, mapping audio device to container, icecast auth creds
  • https://docs.linuxserver.io/general/docker-compose/
  • https://learn.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-8.0#command-line for changing appsettings.json values from command line, combine with Dockerfile ENTRYPOINT and CMD https://stackoverflow.com/questions/54654987/how-to-pass-command-line-arguments-to-a-dotnet-dll-in-a-docker-image-at-run-time

• Improve the SongIdService

  • [DONE] Detect dead air and update result
  • Store list of last n results
  • [DONE]Somehow signal listeners that a new song occurred
    • Use System.Threading.Channels? Using Blazor and SignalR

• Now Playing page improvements

  • Display list of past results
  • Add refresh link
  • [DONE] Eventually add auto-refresh when now playing changes
  • GET request to icecast server to update metadata
    • Icecast docs
    • http://recordpi.local:8000//admin/metadata?mount=/mystream&mode=updinfo&song=ACDC+Back+In+Black
    • Basic Authentication header needed

• Figure out how to configure icecast secrets outside of development environment via secrets.json

  • https://learn.microsoft.com/en-us/aspnet/core/security/app-secrets?view=aspnetcore-8.0&tabs=windows

Install Steps (WORK IN PROGRESS)

1. Install Docker on Raspberry Pi
   • https://docs.docker.com/engine/install/debian/ (For 64-bit Raspberry Pi OS)
2. Download the Docker Image TODO
3. Set up icecast secrets TODO
4. Modify Docker Compose template variables TODO
5. Use Docker Compose template to run the container TODO
6. Browse to site TODO