[mythtv-users] Mythstream for trunk

[Paul Bender]

John H wrote:
> When trying to view a video (NASA TV) the top half of the video in
> reduced mode within the mythstream gui  flickers, the flicker part
> looks like the area where the volume display and the equalizer bar is
> located. You then have to hit the ok button twice to get in full
> screen mode. The first time you hit the ok it goes to half view with
> the mythstream GUI in the background. Once you hit ok again, it goes
> to full screen and the flicker goes away. I noticed this in the log
> file
> 
> QPainter::begin: Widget painting can only begin as a result of a paintEvent

I believe that this is the result of MythStream calling QPainter outside 
  the MythStream classes paintEvent function. I have added a patch 
<http://code.google.com/p/minimyth/source/browse/trunk/gar-minimyth/script/myth-trunk/mythstream/files/mythstream-0.18_qt4-qt_paintevent_fix.patch> 
that I hope fixes this problem.

In addition, I have added a patch to switch from using bitBlt to using 
QPainter::drawPixmap: 
<http://code.google.com/p/minimyth/source/browse/trunk/gar-minimyth/script/myth-trunk/mythstream/files/mythstream-0.18_qt4-qt_bitblt_replace.patch>

Hopefully, these two changes will fix your problems with flicker as it 
should allow Qt to better optimize the screen updates and to make better 
use of hardware acceleration.