Show album art in Windows task bar and MacOS "now playing" controls

[MrEricSir]

Updates controls to fix bugs preventing album art from displaying.

Other fixes in the same widgets:

• Addresses issues preventing app name and logo from appearing on Windows (requires installation)
• Fixes bug where the "Play" button did not always appear on MacOS when media is being played

[github-actions]

Test Coverage

Summary coverage rate:
  lines......: 3.0% (167 of 5492 lines)
  functions..: 4.8% (32 of 660 functions)

[andrewrabert]

Just a heads up - I'm currently planning to replace the Qt desktop client with a complete rewrite built on SDL and CEF. No timeline yet as I've only recently gotten it to a stableish point on all three platforms (Lin/Mac/Win). Album art is working well on all three platforms too.

No formal releases yet, but the latest builds can be found at https://github.com/jellyfin-labs/jellyfin-desktop-cef

[MrEricSir]

Out of curiosity, have you looked into Tauri? Not sure what it would take to integrate Jellyfin with it, but it's far more lightweight than bundling CEF (on most platforms), very actively maintained, and I believe there's an existing MPV plugin for it.

[andrewrabert]

Yup. The problem with Tauri is that it uses webkitgtk on Linux and that tends to be slow.

However, I am looking out for when cef-rs gets to a usable point https://github.com/tauri-apps/cef-rs