[mythtv] MythTV Raspberry Pi2 frontend testers

[Deacon Patrick Ouellette]

On Wed, Dec 09, 2015 at 08:48:37PM +0000, Lawrence Rust wrote:
> > On Tue, Dec 08, 2015 at 07:19:27PM +0000, Lawrence Rust wrote:
> > > 
> > > While on the efficiency tack, I've been able to tweak the OpenMAX
> > > decoder to share buffers with the video renderer.  This avoids a CPU
> > > buffer copy.  A 1920x1080 frame occupies ~3MB so @ 30Hz this avoids
> > > ~100MB/s of CPU copies.  In my tests this lowers CPU overhead by around
> > > 8% for SD and 15% for HD.
> > > 
> > .
> > .
> > .
> > > 
> > > Optionally download the pre-built archives (~100MB)
> > > # For Debian wheezy/0.27:
> > > wget http://www.softsystem.co.uk/download/mythtv/mythtv-v0.27.5-101-g665ee21-RPI2.tar.bz2
> > 
> > For a data point, using the pre-built wheezy/0.27 referenced above I
> > see some improvement in the eglfs version, but it still stutter
> > enough to be unwatchable while xcb is fine as long as you avoid the
> > OSD.
> > 
> > Source video is 720p60 and 1080i30 to a 1080p60 display via hdmi.
> > Raspberry Pi2 overclocked to 1GHz.
> 
> Pat, thanks for sharing your results.  A small favour, would you repeat
> your tests but with the audio output device set to NULL?  I'm beginning
> to think that audio decoding may be a limiting factor.
> 

Lawrence,

Setting the audio device to NULL seems to smooth out the playback. Is there
any way to get digital audio pass-through working? (It works on other 
platforms)

Pat