This commit adds the `SHOWMOVEMENT` [tag](https://picard-docs.musicbrainz.org/en/appendices/tag_mapping.html#show-work-movement-4). Historically, this tag originates from iTunes' MP4, but has since become widely used. It is created by Picard's Classical music [plugins](https://picard-docs.musicbrainz.org/en/variables/variables_classical.html) (such as "Classical Extras" or "Work & Movement").
The reasoning behind this tag is to display Work & Movement titles without redundant information and in a more uniform way. Moreover, it additionally serves as an implicit marker denoting classical music tracks (genre tags aren't sufficient).
If the client so chooses to support this tag, they can display `Work` and `Movement` instead of the track title allowing for cleaner display. Other clients can continue to display the `%title%` as before without any fuss.
Previously, inode numbers were truncated to 32 bits, which could lead
to problems on XFS where inodes are 64 bit; this could lead to bogus
"recursive directory found" errors during database update.
[mk: added commit description and NEWS line]
Closes https://github.com/MusicPlayerDaemon/MPD/issues/2000
- added is set to current time, if a new song is added to the database.
- GetAdded falls back to mtime.
Code for proxy plugin is missing, this needs a patch for libmpdclient.
closes#378
This eliminates all `Storage::GetInfo()` calls from
`UpdateWalk::PurgeDeletedFromDirectory()` and instead uses a "marker"
field to mark items that have been visited; later, all unmarked items
can be deleted.
This eliminates a lot of redundant I/O which is noticable with the
`curl` storage plugin (i.e. WebDAV).
Without clearing all `in_playlist` flags, the songs will never be
revealed again if they were hidden once by a CUE sheet, not even after
the CUE sheet gets deleted or modified.
Closes https://github.com/MusicPlayerDaemon/MPD/issues/1784
Fixes hide_playlist_targets not working after server restart
Currently, `hide_playlists_targets` works by skipping songs with
`in_playlist` value set to true in
[`Directory::Walk`](a57bcd0238/src/db/plugins/simple/Directory.cxx (L237)). But
`in_playlist` is not stored and only updated in
[`UpdateWalk::PurgeDanglingFromPlaylists`](a57bcd0238/src/db/update/Playlist.cxx (L139)),
which will only be executed while updating DB.
This causes the problem that playlist target songs are correctly
hidden after database update, but will remain visible after mpd server
restarted. This pr solves the problem by storing `in_playlist` value
of songs into the `SimpleDatabase` file.