[mythtv] [mythtv-commits] mythtv commit: r16790 - in trunk by janne

[Janne Grunau]

On Tuesday 25 March 2008 20:48:39 mythtv at cvs.mythtv.org wrote:
>       Author: janne
>         Date: 2008-03-25 19:48:37 +0000 (Tue, 25 Mar 2008)
> New Revision: 16790
>    Changeset: http://cvs.mythtv.org/trac/changeset/16790
>
> Log:
>
> merges qt4 branches back to trunk

The qt4 branches are merged to trunk. Any further porting to qt4 will 
happen in trunk.

The minimal known working qt version is Qt 4.3. Qt 4.2 wasn't test up to 
now. If the current trunk compiles with Qt 4.2 we might try not to 
break it but all developers seem to use Qt 4.3. If you want Qt 4.2 
supported take this as hint to try building trunk against it and report 
success or patches if the changes are small.

MythTV trunk is probably less stable than usual. There are some know 
issues at the moment:

Stuart Morgan and I saw a deadlock with two simultaneously started 
recordings on one physical dvb card. So you might lose recordings. I 
wasn't able to reproduce it in a debugging enviroment.

We are know using utf8 as database string encoding. Changes to the qt4 
mysql driver made it necessary. The database interface got some other 
major changes in qt4. The symbolic placeholders aren't emulated anymore 
but are directly translated to positional bindings. This breaks 
multiple usage of one placeholder in a query. I've added a check for it 
to MSqlQuery::prepare() which exists if it sees such a query. I hope we 
eliminated all such queries. If you encouter such query report it so we 
can fix it immidiately.
Another related change is that the db interface doesn't like to bind 
unused values. We ignore them and print a warning. Please report those 
errors too.
  
mythfrontend -p segfaults

The Qt4 port should continue with gradually eliminating the usage of qt3 
support classes and methods. The old ui code should have very low 
priority since it will become more and more obsolete as the mythui port 
continues.

Janne