[mythtv] fbdev

[Joseph A. Caputo]

On Thursday 30 October 2003 14:23, Wayne Hogue wrote:
> Is anyone working on a framebuffer version using qt3-embedded?

I don't know, but I'd guess that with the recent work to support the 
PVR-350 decoder & TV-out, it wouldn't be too much of a stretch to come 
up with generic framebuffer support.  However, the problem (at least, 
as I see it, not knowing anything about that part of the code) is the 
lack of accelerated video scaling.  For the PVR-350, the decoding (& 
presumably scaling) is done in hardware.  Likewise, for 
software-decoded RTjpeg/MPEG-4, the scaling is assisted by hardware (Xv 
extensions).  But, for software-decoded RTjpeg/MPEG-4 on a PVR-350 or 
other framebuffer device, video scaling has to be done in software.  
I'm not saying that it can't be done (it already is if you specify the 
NO_XV environment variable), but it puts a helluva load on your CPU for 
playback.

The only other snags for framebuffer (I think) would be some or all of 
the MythMusic visualizations.  Oh, and probably mythbrowser.  Also, I 
wonder if XvMC could work with framebuffer...?

If someone who actually knows something about this (Isaac?) wants to 
expose my paucity of knowledge in this area, please do.

-JAC