Mailing List Archive: MythTV: Dev

Via M10000 mpeg2 decoder work

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jcampbell at trexenterprises

Aug 25, 2003, 1:04 PM

Post #1 of 13 (6944 views)
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Via M10000 mpeg2 decoder work

I was just wondering if anyone has been working on the Via Nehemiah's
onboard decoder for Myth? Since the release of VeXP, a version of Xine
that takes advantage of the onboard decoder chip, I haven't heard much
about work on this subject. If no one is working on this, I will start
in, but I'd rather not recover any ground that someone has already
gotten passed. This hardware will make a solid frontend and possibly a
frontend/backend combo with a PVR-250 added in. Thanks for the good
work Dev team.

Peace,
James

ijr at po

Aug 25, 2003, 1:59 PM

Post #2 of 13 (6819 views)
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Re: Via M10000 mpeg2 decoder work [In reply to]

On Monday 25 August 2003 04:04 pm, James Campbell wrote:
> I was just wondering if anyone has been working on the Via Nehemiah's
> onboard decoder for Myth? Since the release of VeXP, a version of Xine
> that takes advantage of the onboard decoder chip, I haven't heard much
> about work on this subject. If no one is working on this, I will start
> in, but I'd rather not recover any ground that someone has already
> gotten passed. This hardware will make a solid frontend and possibly a
> frontend/backend combo with a PVR-250 added in. Thanks for the good
> work Dev team.

No one has, that I know of. I was going to look into doing it, but I'd need
to reinstall another distribution on my m10k to be able to use the supplied
kernel modules.

It _should_ be really fairly similar to the existing XvMC support, aside from
dropping out of the codepath in the mpeg2 decoder sooner.

Isaac

quintesse at palacio-cristal

Aug 25, 2003, 2:58 PM

Post #3 of 13 (6839 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

Anything that other M10000 owners, not hampered by any knowledge of
hardware video decoding, could do to help?

Cheers,
-Tako

Isaac Richards wrote:

>On Monday 25 August 2003 04:04 pm, James Campbell wrote:
>
>
>>I was just wondering if anyone has been working on the Via Nehemiah's
>>onboard decoder for Myth? Since the release of VeXP, a version of Xine
>>that takes advantage of the onboard decoder chip, I haven't heard much
>>about work on this subject. If no one is working on this, I will start
>>in, but I'd rather not recover any ground that someone has already
>>gotten passed. This hardware will make a solid frontend and possibly a
>>frontend/backend combo with a PVR-250 added in. Thanks for the good
>>work Dev team.
>>
>>
>
>No one has, that I know of. I was going to look into doing it, but I'd need
>to reinstall another distribution on my m10k to be able to use the supplied
>kernel modules.
>
>It _should_ be really fairly similar to the existing XvMC support, aside from
>dropping out of the codepath in the mpeg2 decoder sooner.
>
>Isaac
>_______________________________________________
>mythtv-dev mailing list
>mythtv-dev [at] mythtv
>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
>
>

ijr at po

Aug 25, 2003, 3:03 PM

Post #4 of 13 (6814 views)
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Re: Via M10000 mpeg2 decoder work [In reply to]

On Monday 25 August 2003 05:58 pm, Tako Schotanus wrote:
> Anything that other M10000 owners, not hampered by any knowledge of
> hardware video decoding, could do to help?

Doubtful.

Isaac

simon at koala

Aug 26, 2003, 1:53 AM

Post #5 of 13 (6799 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

Isaac Richards wrote:

>On Monday 25 August 2003 04:04 pm, James Campbell wrote:
>
>
>>I was just wondering if anyone has been working on the Via Nehemiah's
>>onboard decoder for Myth? Since the release of VeXP, a version of Xine
>>that takes advantage of the onboard decoder chip, I haven't heard much
>>about work on this subject. If no one is working on this, I will start
>>in, but I'd rather not recover any ground that someone has already
>>gotten passed. This hardware will make a solid frontend and possibly a
>>frontend/backend combo with a PVR-250 added in. Thanks for the good
>>work Dev team.
>>
>>
>
>No one has, that I know of. I was going to look into doing it, but I'd need
>to reinstall another distribution on my m10k to be able to use the supplied
>kernel modules.
>
>It _should_ be really fairly similar to the existing XvMC support, aside from
>dropping out of the codepath in the mpeg2 decoder sooner.
>
>
you might want to check out the following URL:
http://www.ivor.it/cle266.html
the chap has produced an source version of the VIA CLE266 mpeg library
for linux
sounds like most of the heavy lifting (along with VeXP) is now done
--
simon

ijr at po

Aug 26, 2003, 6:49 AM

Post #6 of 13 (6818 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

On Tuesday 26 August 2003 04:53 am, Simon Kenyon wrote:
> you might want to check out the following URL:
> http://www.ivor.it/cle266.html
> the chap has produced an source version of the VIA CLE266 mpeg library
> for linux
> sounds like most of the heavy lifting (along with VeXP) is now done

The library just interfaces with the kernel modules, which are binary only for
now. It's essentially useless on its own.

Isaac

simon at koala

Aug 27, 2003, 4:13 AM

Post #7 of 13 (6825 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

Isaac Richards wrote:

>On Tuesday 26 August 2003 04:53 am, Simon Kenyon wrote:
>
>
>>you might want to check out the following URL:
>>http://www.ivor.it/cle266.html
>>the chap has produced an source version of the VIA CLE266 mpeg library
>>for linux
>>sounds like most of the heavy lifting (along with VeXP) is now done
>>
>>
>
>The library just interfaces with the kernel modules, which are binary only for
>now. It's essentially useless on its own.
>
>Isaac
>_______________________________________________
>mythtv-dev mailing list
>mythtv-dev [at] mythtv
>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
>
>
oh well
i'll point him at the kernel modules next :-)
--
simon

ijr at po

Aug 28, 2003, 10:55 AM

Post #8 of 13 (6818 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

On Monday 25 August 2003 04:04 pm, James Campbell wrote:
> I was just wondering if anyone has been working on the Via Nehemiah's
> onboard decoder for Myth? Since the release of VeXP, a version of Xine
> that takes advantage of the onboard decoder chip, I haven't heard much
> about work on this subject. If no one is working on this, I will start
> in, but I'd rather not recover any ground that someone has already
> gotten passed. This hardware will make a solid frontend and possibly a
> frontend/backend combo with a PVR-250 added in. Thanks for the good
> work Dev team.

See current CVS for a start at this -- needs a couple bugfixes, if anyone else
wants to help out..

----------------------------------------------------------------------------
Changes committed by ijr on Thu Aug 28 13:42:22 2003

Log Message:
Very preliminary CLE266 hardware decoding. Lots of video corruption, looks
like I'm not sending it frames in the proper order or not setting up the
prev/next frames right. Pausing crashes it. No OSD. Anyone wanting to try
and fix things, go right ahead =)

I don't think I broke anything else, but, ya never know. Need to do a
make distclean.
----------------------------------------------------------------------------

Isaac

aburden at onegeeksopinion

Aug 28, 2003, 7:32 PM

Post #9 of 13 (6812 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

Check out slashdot
http://developers.slashdot.org/developers/03/08/29/0052217.shtml?tid=126&tid=156&tid=188

Glad I read his page before it was /. ;)

simon at koala

Aug 29, 2003, 12:59 AM

Post #10 of 13 (6798 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

On Thursday 28 August 2003 18:55, Isaac Richards wrote:

> Very preliminary CLE266 hardware decoding. Lots of video corruption, looks
> like I'm not sending it frames in the proper order or not setting up the
> prev/next frames right. Pausing crashes it. No OSD. Anyone wanting to
> try and fix things, go right ahead =)
>
> I don't think I broke anything else, but, ya never know. Need to do a
> make distclean.

thank you so very much
will be testing it later today
--
simon (who runs on an Epia-M9000)

quintesse at palacio-cristal

Aug 29, 2003, 6:09 AM

Post #11 of 13 (6830 views)
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RE: Via M10000 mpeg2 decoder work [In reply to]

Anything special you have to do to test it?
I'll try it as soon as I get back home.

-Tako

> -----Original Message-----
> From: mythtv-dev-bounces [at] mythtv
> [mailto:mythtv-dev-bounces [at] mythtv] On Behalf Of Isaac Richards
> Sent: donderdag 28 augustus 2003 19:56
> To: Development of mythtv; James Campbell
> Subject: Re: [mythtv] Via M10000 mpeg2 decoder work
>
>
> On Monday 25 August 2003 04:04 pm, James Campbell wrote:
> > I was just wondering if anyone has been working on the Via
> Nehemiah's
> > onboard decoder for Myth? Since the release of VeXP, a
> version of Xine
> > that takes advantage of the onboard decoder chip, I haven't
> heard much
> > about work on this subject. If no one is working on this,
> I will start
> > in, but I'd rather not recover any ground that someone has already
> > gotten passed. This hardware will make a solid frontend
> and possibly a
> > frontend/backend combo with a PVR-250 added in. Thanks for the good
> > work Dev team.
>
> See current CVS for a start at this -- needs a couple
> bugfixes, if anyone else
> wants to help out..
>
> --------------------------------------------------------------
> --------------
> Changes committed by ijr on Thu Aug 28 13:42:22 2003
>
> Log Message:
> Very preliminary CLE266 hardware decoding. Lots of video
> corruption, looks
> like I'm not sending it frames in the proper order or not
> setting up the
> prev/next frames right. Pausing crashes it. No OSD. Anyone
> wanting to try
> and fix things, go right ahead =)
>
> I don't think I broke anything else, but, ya never know.
> Need to do a
> make distclean.
> --------------------------------------------------------------
> --------------
>
> Isaac
> _______________________________________________
> mythtv-dev mailing list
> mythtv-dev [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
>

ijr at po

Aug 29, 2003, 9:00 AM

Post #12 of 13 (6810 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

On Friday 29 August 2003 09:09 am, Tako Schotanus wrote:
> Anything special you have to do to test it?
> I'll try it as soon as I get back home.

Best way to do it is get VIA's hacked up version of Xine working first, then
just modify mythtv's settings.pro to enable the cle266 decoding, do a make
distclean, then try to play a mpeg2 file.. I've fixed most of the video
corruption issues (and pausing crashing it), but what's issues are left are
also present when I play back the same files with Xine, so I dunno what's up
with that..

Isaac

quintesse at palacio-cristal

Aug 31, 2003, 3:39 PM

Post #13 of 13 (6834 views)
Permalink

Re: Via M10000 mpeg2 decoder work [In reply to]

Unfortunately I got nowhere yet because I first decided to upgrade to
the latest VIA drivers.
That worked okay (about 10% drop in CPU usage watching live tv) so
decided to upgrade to latest CVS version of MythTV, but now the screen
got corrupted the moment I accessed any screen that tried to show a list
(Music, TV recordings, etc).
Wanted to do a fresh compile and install but CVS died on me halfway
through, so I'll have to wait for it to work again.
I'll try to do it sometime in the coming days (if my deadline at work
allows it, that is ;-)

Cheers,
-Tako

Isaac Richards wrote:

>On Friday 29 August 2003 09:09 am, Tako Schotanus wrote:
>
>
>>Anything special you have to do to test it?
>>I'll try it as soon as I get back home.
>>
>>
>
>Best way to do it is get VIA's hacked up version of Xine working first, then
>just modify mythtv's settings.pro to enable the cle266 decoding, do a make
>distclean, then try to play a mpeg2 file.. I've fixed most of the video
>corruption issues (and pausing crashing it), but what's issues are left are
>also present when I play back the same files with Xine, so I dunno what's up
>with that..
>
>Isaac
>_______________________________________________
>mythtv-dev mailing list
>mythtv-dev [at] mythtv
>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
>
>

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