On Sat, 6 Jan 2007, Darren Wilkinson wrote:
Matthias Schniedermeyer wrote:
Darren Wilkinson wrote:
> Most people AFAICT use vdr for sdtv and while HDTV may or may not be out
> of the question due to bandwidth sdtv definitely isn't. In fact I have
> linux on my xbox which has much less bandwidth than even the ps2 and
> most distros for that have a dvd player.
The thing with the XBOX is that it pretty much has a standard PC with a
standard Geforce 3.5 (AFAIR it is something between the 3 and the 4). So
it should have hardware acceleration, which makes it a quite good
platform for a video player, although i wouldn't buy one myself.
The xbox does have the hardware but (like the PS3) has no accelerated drivers
to use it. Video access is done through the framebuffer but this is more than
enough for dvd playback which is the same resolution as sdtv.
XBox has accelerated video driver in DirectFB (video overlay with YUV->RGB
conversion and scaling). Decoding 720x576 mpeg2 with xine-lib uses ~20% of
CPU power, another 10% is used to copy data around.
> I am actually looking into a building a working dtv rig for the
> (original) xbox but am much more limited by the "mere" 60mb (64mb-4mb
> for the framebuffer) of memory
Memory is just enough for simple DirectFB player, even with no swap (I
use xineliboutput vdr-fbfe on diskless XBox). But for VDR and
software player RAM is definetely too small. Anyway, installing VDR to
XBox does not make much sense as one can't attach DVB cards to XBox,
so using separate server for cards (and VDR) is required.
- Petri
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