[Open-graphics] Re: X-video-server

Timothy Miller theosib at gmail.com
Mon Jul 3 09:15:23 EDT 2006


On 7/3/06, Lourens Veen <lourens at rainbowdesert.net> wrote:
> On Monday 03 July 2006 01:48, Dieter wrote:
> >
> > Do you (or anyone) have any thoughts on JRT's suggestion of using a
> > DSP chip?  The decoder needs to handle the most common formats,
> > mpeg at the very least, to avoid transcoding.  Transcoding takes a
> > lot of CPU, and Theora is lossy.
>
> True. What would be nice would be a CPU with a built-in DSP, so that the
> CPU can handle the network stuff and OSD and so on, and the DSP could
> do the heavy-duty decoding work.

How "realtime" does this need to be?  Can we not implement the
networking stuff on the DSP?

> I don't suppose Sony would let us borrow their Cell design?
>
> What about something a little lighter than Theora? We don't really need
> that much compression on a 100MBit network. Something like HuffYUV
> (Lossless, http://neuron2.net/www.math.berkeley.edu/benrg/huffyuv.html)
> or MJPEG perhaps?

I'm planning on implementing RGB <-> YUV conversation, at least.
Rather than spending bunches of CPU time doing the matrix algebra, we
can do it in hardware and save at least SOME converstion time.


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