Airsonic integration does not sync album art

[AntonLydike]

When integrating with the NextCloud Music Subsonic API, artist art is synced, but album art is not synced and/or broken (see below).

I haven't tested Tauon yet with other subsonic endpoints, but I tested other clients with the same endpoint and they are able to download album art.

I'm happy to contribute a fix here if this is indeed a bug.

Tauon version: v7.7.2
Nextcloud Music version: 2.0.0

[Taiko2k]

You could investigate if you're able to get Tauon running from source.

To diagnose, try run Tauon from terminal, you should see an error about image generation. Open t_modules/t_main.py, and search for that string in the source file, then place a raise statement in that except block and run again to get a full trackback.

[AntonLydike]

Thanks for the pointers! I am currently super duper swamped with work, but I'll put in a calendar reminder on the 17th to look into this!

[AntonLydike]

Okay, did a tiny bit of digging, and I see a bunch of errors:

Blur blackground error
cannot identify image file <_io.BufferedReader name='/home/anton/.cache/TauonMusicBox/network/0598a68f9ea3'>
Exception in thread Thread-14 (worker4):
Traceback (most recent call last):
  File "/nix/store/pfv4raslwhi3101k342752v65zxkwrxq-python3-3.11.9/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
    self.run()
  File "/nix/store/pfv4raslwhi3101k342752v65zxkwrxq-python3-3.11.9/lib/python3.11/threading.py", line 982, in run
    self._target(*self._args, **self._kwargs)
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 25285, in worker4
    style_overlay.worker()
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 13058, in worker
    self.im = album_art_gen.get_blur_im(track)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 12502, in get_blur_im
    im = Image.open(source_image)
         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/015hrwjaajqi52175zj2cs3g56jgwxl8-python3.11-pillow-10.3.0/lib/python3.11/site-packages/PIL/Image.py", line 3339, in open
    raise UnidentifiedImageError(msg)
PIL.UnidentifiedImageError: cannot identify image file <_io.BufferedReader name='/home/anton/.cache/TauonMusicBox/network/0598a68f9ea3'>
Blur blackground error
cannot identify image file <_io.BufferedReader name='/home/anton/.cache/TauonMusicBox/network/0598a68f9ea3'>
Exception in thread Thread-15 (worker4):
Traceback (most recent call last):
  File "/nix/store/pfv4raslwhi3101k342752v65zxkwrxq-python3-3.11.9/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
Applying theme: Sky
    self.run()
  File "/nix/store/pfv4raslwhi3101k342752v65zxkwrxq-python3-3.11.9/lib/python3.11/threading.py", line 982, in run
    self._target(*self._args, **self._kwargs)
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 25285, in worker4
    style_overlay.worker()
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 13058, in worker
    self.im = album_art_gen.get_blur_im(track)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 12502, in get_blur_im
    im = Image.open(source_image)
         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/015hrwjaajqi52175zj2cs3g56jgwxl8-python3.11-pillow-10.3.0/lib/python3.11/site-packages/PIL/Image.py", line 3339, in open
    raise UnidentifiedImageError(msg)
PIL.UnidentifiedImageError: cannot identify image file <_io.BufferedReader name='/home/anton/.cache/TauonMusicBox/network/0598a68f9ea3'>
Reloading smart playlist: Music
Blur blackground error
cannot identify image file <_io.BufferedReader name='/home/anton/.cache/TauonMusicBox/network/0598a68f9ea3'>
Exception in thread Thread-16 (worker4):
Traceback (most recent call last):
  File "/nix/store/pfv4raslwhi3101k342752v65zxkwrxq-python3-3.11.9/lib/python3.11/threading.py", line 1045, in _bootstrap_inner
    self.run()
  File "/nix/store/pfv4raslwhi3101k342752v65zxkwrxq-python3-3.11.9/lib/python3.11/threading.py", line 982, in run
    self._target(*self._args, **self._kwargs)
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 25285, in worker4
    style_overlay.worker()
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 13058, in worker
    self.im = album_art_gen.get_blur_im(track)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/5yvdl6bmwlpwc7j2q6kzd0h3j386av55-tauon-7.7.2/share/tauon/t_modules/t_main.py", line 12502, in get_blur_im
    im = Image.open(source_image)
         ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/015hrwjaajqi52175zj2cs3g56jgwxl8-python3.11-pillow-10.3.0/lib/python3.11/site-packages/PIL/Image.py", line 3339, in open
    raise UnidentifiedImageError(msg)
PIL.UnidentifiedImageError: cannot identify image file <_io.BufferedReader name='/home/anton/.cache/TauonMusicBox/network/0598a68f9ea3'>

And investigating that file, I see:

>file /home/anton/.cache/TauonMusicBox/network/0598a68f9ea3
/home/anton/.cache/TauonMusicBox/network/0598a68f9ea3: JSON text data
>cat /home/anton/.cache/TauonMusicBox/network/0598a68f9ea3 | jq

{
  "subsonic-response": {
    "error": {
      "code": 70,
      "message": "entity track-624 has no cover"
    },
    "status": "failed",
    "version": "1.16.1",
    "type": "nextcloud music",
    "serverVersion": "2.0.0",
    "openSubsonic": true
  }
}

I think this is the Tauon "wallpaper" background, but it would hint at a problem in the API instead of in Tauon...

[C0rn3j]

That's at least partially on Tauon, we shouldn't be passing a JSON reply with an error as an image :)

I'd suggest testing on the devel branch in this PR (or just master if it's pulled already) - #1311

There is a check here for API errors, but the API response is currently passed back anyway, even if it logs an error:

		if d["subsonic-response"]["status"] != "ok":
			logging.error("Subsonic Error: " + response.text)

We should probably be handling the case better.

Does this actually get logged when the issue happens?

If so, it's probably the cause of the errors you posted above.

[AntonLydike]

Hi, sorry for not getting back to this earlier. I realized that it's harder than expected to get Tauon runnin in dev mode on my machine, will attempt another run hopefully soon!

Thanks for sticking with this issue!

[C0rn3j]

If you're on Linux, the new run.sh script should work fine for it - albeit it does not run Tauon in the devel mode, it sets up a dev venv though.

[C0rn3j]

This is either fixed or very likely specific to Nextcloud Music.

Test the latest development prebuilt before trying your own dev env and see if it doesn't work there.

[C0rn3j]

#1163 that I just closed in favor of this one also mentioned missing lyrics from NC Music.

@AntonLydike as for getting the dev version up, you might want to read up in #1082 as the fellow there also runs Nix and they got it to run.