Animate WLED cover

[joeyy-watts]

Add animations to WLED cover to add a more lively feel by varying brightness.

Would also be neat to implement patterns.

Examples:

• While playing, vary brightness according to beat (if possible at all)
  • Spotify API has a 30-second sample audio (https://developer.spotify.com/documentation/web-api/reference/get-the-users-currently-playing-track under ['item']['preview_url'])
  • But preview can be null, so some generic default pattern should be implemented first
• While paused, pulsate brightness slowly
  • Current behavior is, if nothing is playing then turn WLED off
• Crossfade when changing cover

Implementation: WLED has live data mode, UDP API, so maybe use something along that line to send brightness info. Or if possible, send a command to WLED to have brightness animation on WLED side.

[joeyy-watts]

https://github.com/topics/beat-detection

[joeyy-watts]

Image state is lost once displayed; not possible to handle brightness variation on WLED side (at least not without some usermod): Aircoookie/WLED#3160 (comment)

Really dumb workaround right now is to just repeatedly send the entire pixel art JSON with varying brightness.

other ref:
https://wled.discourse.group/t/use-strip-show-in-a-loop/7990/3
https://github.com/hughc/wled-pixelart-client

[joeyy-watts]

Another possible workaround is do use overlapping segments and overlay, and play some (custom) animation over the image instead.

But not sure how to do that yet (or if it's even possible): https://kno.wled.ge/features/effects/#effect-overlay

[joeyy-watts]

GIFs might be an option: Aircoookie/WLED#3061

[joeyy-watts]

Most likely option, use UDP realtime.
Refer to: https://github.com/scottlawsonbc/audio-reactive-led-strip

[joeyy-watts]

Now in progress in https://github.com/joeyy-watts/SpotifyWLED/tree/feature/artnet

solution: use ArtNet instead

[joeyy-watts]

Spotify API provides audio feature. Very useful for generating track-unique animations:

https://developer.spotify.com/documentation/web-api/reference/get-several-audio-features

[joeyy-watts]

Will close this one, with new animations planned in other issues.