Add non-standard multi-value audio tag support

[gnattu]

Changes

This adds the Audio Tag settings GUI to library settings for Music.

Issues

Depends on jellyfin/jellyfin#12385

[jellyfin-bot]

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
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0.0% Coverage on New Code
0.0% Duplication on New Code

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[dmitrylyzo]

From a UI perspective, everything is fine.

As for the server side, here performers are split by /. Maybe we should use custom delimiters there as well? Or not split at all (force users to use multiple Artist tags)?

Current behaviour:

mediaInfo.Artists: ["K/DA", "Madison Beer, (G)I-DLE, Lexie Liu, League of Legends, Jaira Burns, Seraphine"]
track.Artist: "K\u001fDA, Madison Beer, (G)I-DLE, Lexie Liu, League of Legends, Jaira Burns, Seraphine"
performers: ["K", "DA, Madison Beer, (G)I-DLE, Lexie Liu, League of Legends, Jaira Burns, Seraphine"]

[gnattu]

From a UI perspective, everything is fine.

As for the server side, here performers are split by /. Maybe we should use custom delimiters there as well? Or not split at all (force users to use multiple Artist tags)?

Current behaviour:

mediaInfo.Artists: ["K/DA", "Madison Beer, (G)I-DLE, Lexie Liu, League of Legends, Jaira Burns, Seraphine"]
track.Artist: "K\u001fDA, Madison Beer, (G)I-DLE, Lexie Liu, League of Legends, Jaira Burns, Seraphine"
performers: ["K", "DA, Madison Beer, (G)I-DLE, Lexie Liu, League of Legends, Jaira Burns, Seraphine"]

It is so interesting that you can manually have \u001f in the tag... How did you even enter that?

I created files with / and it is not split. So I need extra info on how to reproduce your mysterious behavior

[dmitrylyzo]

It is so interesting that you can manually have \u001f in the tag... How did you even enter that?

Not sure where it came from. I have 2F for / in K/DA (TPE1 tag).
Could it be from TagLib or something?

[gnattu]

Not sure where it came from. I have 2F for / in K/DA (TPE1 tag).

Then it could be something magic happening for ASCII/Windows encoding to UTF-8 conversion. Because the internal separator is not intended for external use and I explicitly picked a control character in UTF-8 so that it is very very unlikely to be inserted by our users. The conversion thing is only my guess though, I don't know how the 2F becomes 1F exactly.

[gnattu]

If my guessing is correct, you change private const char InternalValueSeparator = '\u001F'; to private const char InternalValueSeparator = '\u001E'; and that may workaround your issue. And if that is the case let's hope nothing will be converted to \u001E then.