[mythtv-users] MythTV on PPC

[Aaron Stewart]

This is a terrific step!  Congratulations..

Could this possibly lead to a port to TiVo's hardware? (ppc based, if
I'm not mistaken)?

On Mon, 2003-04-14 at 23:42, Gregorio Gervasio Jr. wrote:
> >>>>> On Mon, 14 Apr 2003 22:06:18 -0700, Cedar McKay <cedarmckay at mac.com> said:
> 
> c> Super, I'm looking forward to it.
> 
>         I've just sent my patch to the list.  Give it a try.  I'm not
> sure Isaac will accept it soon so I'd appreciate it if someone else
> could test it.  You can apply it with "patch -p0".  For your G3, I
> think you can edit "settings.pro" and change "-mcpu=7400" to
> "-mcpu=750".  Let me know if you run into problems.
> 
> c> Maybe at the same time you can enlighten me about this big-endian
> c> issue. I've done a bit of poking around and found a couple of things
> c> that suggest that PPC supports big _or_ little endian words. Here are
> c> a couple of quotes I found on message boards:
> 
>         Yes, the PowerPC can run in both modes but both Linux and
> MacOS X use big-endian mode.  I think little-endian mode is used in
> some embedded systems.
> 
>         MythTV is affected because the nuv file is a binary file which
> has little-endian fields in some headers -- these fields need to be
> byte-swapped so that they're interpreted correctly on PPC.  The pixmap
> RGB and sound stream formats are similarly affected.
> 
>         MythTV is not really different from any other software that
> reads/writes binary files.  It's just that most Unix software works
> because they've already been ported to big-endian machines (like Sun,
> HP, and IBM workstations).  For older stuff, they may have even been
> developed on big-endian machines.  I guess it's really only when new
> binary file formats show up that some porting needs to be done.  (I
> remember when xmms would just generate screeching sounds on LinuxPPC!)
> -- 
> Gregorio Gervasio, Jr.
> gtgj at pacbell.net
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at snowman.net
> http://lists.snowman.net/cgi-bin/mailman/listinfo/mythtv-users