[mythtv] [mythtv-commits] Ticket #7650: Use libmythui to draw the OSD

[Doug Larrick]

On Tue, 19 Jan 2010 00:27:54 -0000
"MythTV" <mythtv at cvs.mythtv.org> wrote:

>  N.B. This removes the code that requests realtime priority for the
> video playback thread. Following discussion on IRC, this may still be
>  achievable while running in a QThread though the setting may no
> longer be widely used and/or of much utilty. The new QThread is
> allocated a priority of QThread::TimeCriticalPriority which may give
> the same results on certain platforms.

FYI realtime priority of the video thread is absolutely essential for
smooth playback on my systems (Core2Duo, Intel graphics), especially if
any background activity (notably commercial scanning) is going on.  In
plain old XVideo output, the video thread is responsible for displaying
each frame at the correct time, with only minimal help from the
hardware.  If the scheduler calls it late, we miss a frame.

-Doug
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