I'll reference #4379
When viewing the library with album covers visible, the covers load very slowly the first time
as they have to wait on the tagreaders. If I scroll down the library, it takes minutes for the
tagreader to catch up. The nice thing is that the pixmaps are cached. However, once
Clementine is restarted, the whole process has to happen again.
This patch adds a persistent disk cache in the form of a QNetworkDiskCache to store the
pixmaps on disk and load them into the QPixmapCache as required.
I've noted literally night and day performance improvements, not only when scrolling through the library.
There is much better interface responsiveness when searching, and I no longer see the no_cover_icon
temporarily anymore.
The transaction handling while upgrading the database schema had to be revised.
Furthermore some QSqlQuery statements needed to be finished properly.
Fixes issue 2556
With this patch, compilations will be grouped under Various artists not
only when Artist is used as the top most Group By setting, but also in
lower levels as well. For example the user can set the top level Group By
to 'Genre' and still get compilations organized separately under each genre
when using Artist or AlbumArtist for the second nested Group By level.
Fixes issue 2757
With the previous patch the Various artists node creation is oved to
RunQuery, which means that a later call to BeginReset() will delete it.
In this patch, we keep the logic deciding whether we need the node in
RunQuery(), but postpone the actual creation until PostQuery().
Instead of relying on the backend to provide us with the information
of whether there are compilations in the whole of the library, we instead
look into the query we are currently working with for compilations. This
way we can be as granular as we want in the future.
This also means we now have to add the Various artists node at the time we
do the query with RunQuery() instead at BeginReset().
There is no reason why these need to reimplement the same thing;
put the common functionality in RunQuery() and PostQuery() and re use
the code. Less code paths to keep track of make it easier to implement
new features and fixes.
Chocobozzz
Eduardo Sánchez Muñoz
Mattias Andersson
Ignas Kaziukenas
Gavin Howard
Mark Furneaux
John Maguire
GitAnt
Arnaud Bienner
Uwe Klotz
David Sansome
Tony Motakis
Ilya Kasnacheev
Alan Briolat
Angus Gratton
David Sansome