[Nepomuk] Music issues I want to fix

[Sebastian Trüg]

On 06/10/2012 08:32 PM, Ignacio Serantes wrote:
> I brief update status.
>
> 1) I just fix multiple performers bug in flac analyzer.
>
> 2) nmm:albumArtist seems to be related to DB structure and is not a
> coding bug. I just added nmm:albumArtist to SDO and now there is a
> nmm:albumArtist in nmm:MusicAlbum. This is the code I added:
>      nmm:albumArtist
>      a rdf:Property, nrl:DefiningProperty ;
>      rdfs:subPropertyOf nco:contributor ;
>      rdfs:label "album artist" ;
>      rdfs:comment "Album artist" ;
>      rdfs:domain nmm:MusicAlbum ;
>      rdfs:range nco:Contact .

This looks good. I am only concerned about having performer and producer 
on the tracks and artist on the album. Shouldn't that be in sync 
somehow? After all an album is also produced, right? A compilation has a 
producer and each track has a possibly different producer...

> I will upload a patch to Review Board for the first one but, what must I
> do with the second one?

The normal approach is to create a ticket at 
https://sourceforge.net/apps/trac/oscaf/

> On Thu, Jun 7, 2012 at 7:59 PM, Ignacio Serantes <kde at aynoa.net
> <mailto:kde at aynoa.net>> wrote:
>
>     Hi,
>
>     I detect next issues with music albums scanning flac and mp3 formats:
>
>     1) Performers:
>
>       * mp3: supports it but it wrongly adding nmm:albumArtist too and
>         this must be related to nmm:MusicAlbum.
>       * flac: only adds one performer, the last added to the file?.
>         nmm:musicArtist it's not imported and an error is launched:
>         "Cannot set values for abstract property
>         'http://www.semanticdesktop.org/ontologies/2009/02/19/nmm#albumArtist'
>         <http://www.semanticdesktop.org/ontologies/2009/02/19/nmm#albumArtist'>.".
>
>     Solution:
>
>       * 0 to n nmm:albumArtist resources must be added to nmm:MusicAlbum.
>       * 0 to n nmm:performer resources must be added to nmm:MusicPiece.
>
>
>     2) Albums:
>
>       * there is no url in nmm:MusicAlbum so two different albums with
>         same name are considered one unique resource.
>       * determine album url is tricky, you need to obtain the url from a
>         track, a method complicated because previous problem.
>
>     Solution:
>
>       * add nie:url to albums.
>       * two albums with same name but different path are different
>         albums. This have a side effect with sets if sets are in
>         different paths, but I think is better that sets are considered
>         different albums, than two different albums are the same
>         resource. On the other side, this could be handle with some
>         smart path detection assuming some kind of organization with
>         paths. Other solution could be using nmm:albumArtis to determine
>         if two albums are different but, then we have the problem with
>         various artists compilations.
>       * added nfo:depiction as a cover, an image that could be handled
>         by Bangarang or Nepoogle.
>       * maybe more nfo:depiction for scans?
>
>
>     3) Genres:
>
>       * mp3: is not working.
>       * flac: works fine, supporting unlimited genres.
>
>     Solution:
>
>       * bug with mp3 files must be fixed.
>
>
>     4) Sets:
>
>       * there is no total tracks per set.
>       * the total tracks is equal to the total tracks number in the last
>         track scanned.
>
>     Solution:
>
>       * a solution similar as seasons in tvshows.
>       * a total tracks and a total tracks per set must be handled.
>
>     I'm only using flac and mp3 so the same or other issues could be in
>     other music formats.
>
>     Sets problems is a minor issue, but the other three, must be fixed.
>
>     As practically all my music is in flac format I will try to fix
>     problems 1 and 2 in flac analyzer, I'm crossing my fingers because
>     is C++, but I wish to hear comments/suggestions before begin to code.
>
>     --
>     Best wishes,
>     Ignacio
>
>
>
>
>
> --
> Best wishes,
> Ignacio
>
>
>
>
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