[linux-dvb] DVB-T support for original (A1C0) HVR-900

[linux-dvb] DVB-T support for original (A1C0) HVR-900

[Aidan Thornton]

Hi,

I've been attempting to get something that can cleanly support DVB-T
on the original HVR-900, based on up-to-date v4l-dvb and Markus'
em2880-dvb (that is to say, something that could hopefully be cleaned
up to a mergable state and won't be too hard to keep updated if it
doesn't get merged). The current (somewhat messy, still incomplete)
tree is at http://www.makomk.com/hg/v4l-dvb-em28xx/ - em2880-dvb.c is
particularly bad. I don't have access to DVB-T signals at the moment,
but as far as I can tell, it works. Anyone want to test it? General
comments? (Other hardware will be added if I have the time,
information, and someone willing to test it.)

Thanks,
Aidan

_______________________________________________
linux-dvb mailing list
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Re: [linux-dvb] DVB-T support for original (A1C0) HVR-900

[Markus Rechberger]

On 3/24/08, Aidan Thornton <makosoft@googlemail.com> wrote:
> Hi,
>
> I've been attempting to get something that can cleanly support DVB-T
> on the original HVR-900, based on up-to-date v4l-dvb and Markus'
> em2880-dvb (that is to say, something that could hopefully be cleaned
> up to a mergable state and won't be too hard to keep updated if it
> doesn't get merged). The current (somewhat messy, still incomplete)
> tree is at http://www.makomk.com/hg/v4l-dvb-em28xx/ - em2880-dvb.c is
> particularly bad. I don't have access to DVB-T signals at the moment,
> but as far as I can tell, it works. Anyone want to test it? General
> comments? (Other hardware will be added if I have the time,
> information, and someone willing to test it.)
>

This is more than incomplete, VBI is missing (nor tested with various
video standards), and this device is 2 years old and not getting sold
anymore.
It's better to keep everything together at mcentral.de (this will very
likely be moved to an empia domain in near future).

I will join Empia at 1st April 08, adding support for their new
devices (and also improving support of the older ones).

Markus

_______________________________________________
linux-dvb mailing list
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Re: [linux-dvb] DVB-T support for original (A1C0) HVR-900

[Aidan Thornton]

On Mon, Mar 24, 2008 at 11:04 PM, Markus Rechberger
<mrechberger@gmail.com> wrote:
>
> On 3/24/08, Aidan Thornton <makosoft@googlemail.com> wrote:
>  > Hi,
>  >
>  > I've been attempting to get something that can cleanly support DVB-T
>  > on the original HVR-900, based on up-to-date v4l-dvb and Markus'
>  > em2880-dvb (that is to say, something that could hopefully be cleaned
>  > up to a mergable state and won't be too hard to keep updated if it
>  > doesn't get merged). The current (somewhat messy, still incomplete)
>  > tree is at http://www.makomk.com/hg/v4l-dvb-em28xx/ - em2880-dvb.c is
>  > particularly bad. I don't have access to DVB-T signals at the moment,
>  > but as far as I can tell, it works. Anyone want to test it? General
>  > comments? (Other hardware will be added if I have the time,
>  > information, and someone willing to test it.)
>  >
>
>  This is more than incomplete, VBI is missing (nor tested with various
>  video standards), and this device is 2 years old and not getting sold
>  anymore.
>  It's better to keep everything together at mcentral.de (this will very
>  likely be moved to an empia domain in near future).
>
>  I will join Empia at 1st April 08, adding support for their new
>  devices (and also improving support of the older ones).
>
>  Markus
>

Hi,

I've deliberately avoided adding code for VBI - it's just too
difficult to get right on em28xx due to interesting buffer management
and locking issues. (For example, have you fixed the issue that causes
a kernel panic when recording analog video with MythTV? That was a
particularly interesting one.) In any case, that's another issue
entirely - this code is for DVB-T support.

Also, just because this device isn't being sold anymore doesn't mean
it's not worth adding - there are other, fairly similar devices still
on sale. Unfortunately, I don't have access to newer hardware, and
most of the people with the access and knowledge don't seem to want to
have anything to do with it. (Why do I have a feeling that you have a
hand in this?) However, adding support should be easy - all the
necessary code exists and has done for a while (even drx397xd support
for the Pinnacle 330e and the new HVR-900).

Mainly, though, I'm doing it for my own benefit - I have this
hardware, and the changes are small and self-contained enough that I
should be able to stay up-to-date with upstream and keep newer kernels
working with minimal effort. (This tree is actually an updated version
of code I've been using for the past few months on PAL-I and DVB-T,
but didn't publish due to a bug with switching from digital to
analog.)

(By the way, I still reckon your userspace code is a dead end, at
least as far as getting anything merged into the kernel. I think I may
have already explained why.)

Aidan

_______________________________________________
linux-dvb mailing list
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Re: [linux-dvb] DVB-T support for original (A1C0) HVR-900

[Markus Rechberger]

>
> Hi,
>
> I've deliberately avoided adding code for VBI - it's just too
> difficult to get right on em28xx due to interesting buffer management
> and locking issues. (For example, have you fixed the issue that causes
> a kernel panic when recording analog video with MythTV? That was a
> particularly interesting one.) In any case, that's another issue
> entirely - this code is for DVB-T support.
>
> Also, just because this device isn't being sold anymore doesn't mean
> it's not worth adding - there are other, fairly similar devices still
> on sale. Unfortunately, I don't have access to newer hardware, and
> most of the people with the access and knowledge don't seem to want to
> have anything to do with it. (Why do I have a feeling that you have a
> hand in this?) However, adding support should be easy - all the
> necessary code exists and has done for a while (even drx397xd support
> for the Pinnacle 330e and the new HVR-900).
>

The drx397x is only one chip of a series of newer ones which will
follow in future.

> Mainly, though, I'm doing it for my own benefit - I have this
> hardware, and the changes are small and self-contained enough that I
> should be able to stay up-to-date with upstream and keep newer kernels
> working with minimal effort. (This tree is actually an updated version
> of code I've been using for the past few months on PAL-I and DVB-T,
> but didn't publish due to a bug with switching from digital to
> analog.)
>

it's fine that you do it on your own purpose for yourself, although
there's much more development going on on the other side.

> (By the way, I still reckon your userspace code is a dead end, at
> least as far as getting anything merged into the kernel. I think I may
> have already explained why.)
>

There are several reasons for going that way I'm not up for waiting 2
years till something is implemented because some people don't want to
discuss certain things. It's like discussing issues with a wall.
This is the main point why I'm going the other way since this is
simply no option, and everyone can see the result in earlier supported
devices.

The thing you're doing is of course based on my work again and even in
future you cannot avoid to base things on that. As long as this root
problem isn't solved I don't see any other way, and I'm definitely not
the one who will delay any further devices anymore.

Markus

_______________________________________________
linux-dvb mailing list
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Re: [linux-dvb] DVB-T support for original (A1C0) HVR-900

[Markus Rechberger]

On 3/25/08, Aidan Thornton <makosoft@googlemail.com> wrote:
> On Mon, Mar 24, 2008 at 11:04 PM, Markus Rechberger
> <mrechberger@gmail.com> wrote:
> >
> > On 3/24/08, Aidan Thornton <makosoft@googlemail.com> wrote:
> > > Hi,
> > >
> > > I've been attempting to get something that can cleanly support DVB-T
> > > on the original HVR-900, based on up-to-date v4l-dvb and Markus'
> > > em2880-dvb (that is to say, something that could hopefully be cleaned
> > > up to a mergable state and won't be too hard to keep updated if it
> > > doesn't get merged). The current (somewhat messy, still incomplete)
> > > tree is at http://www.makomk.com/hg/v4l-dvb-em28xx/ - em2880-dvb.c is
> > > particularly bad. I don't have access to DVB-T signals at the moment,
> > > but as far as I can tell, it works. Anyone want to test it? General
> > > comments? (Other hardware will be added if I have the time,
> > > information, and someone willing to test it.)
> > >
> >
> > This is more than incomplete, VBI is missing (nor tested with various
> > video standards), and this device is 2 years old and not getting sold
> > anymore.
> > It's better to keep everything together at mcentral.de (this will very
> > likely be moved to an empia domain in near future).
> >
> > I will join Empia at 1st April 08, adding support for their new
> > devices (and also improving support of the older ones).
> >
> > Markus
> >
>
> Hi,
>
> I've deliberately avoided adding code for VBI - it's just too
> difficult to get right on em28xx due to interesting buffer management
> and locking issues. (For example, have you fixed the issue that causes
> a kernel panic when recording analog video with MythTV? That was a
> particularly interesting one.) In any case, that's another issue
> entirely - this code is for DVB-T support.
>

I'm not aware of that bug, although VBI just needs some finetuning. I
got it work with zapping/libzvbi a long time ago. As for now I put it
onto the todolist for next month.

Markus

_______________________________________________
linux-dvb mailing list
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Re: [linux-dvb] DVB-T support for original (A1C0) HVR-900

[Simon Kenyon]

Aidan Thornton wrote:
> I've been attempting to get something that can cleanly support DVB-T
> on the original HVR-900, based on up-to-date v4l-dvb and Markus'
> em2880-dvb (that is to say, something that could hopefully be cleaned
> up to a mergable state and won't be too hard to keep updated if it
> doesn't get merged). The current (somewhat messy, still incomplete)
> tree is at http://www.makomk.com/hg/v4l-dvb-em28xx/ - em2880-dvb.c is
> particularly bad. I don't have access to DVB-T signals at the moment,
> but as far as I can tell, it works. Anyone want to test it? General
> comments? (Other hardware will be added if I have the time,
> information, and someone willing to test it.)
>   

it build and installs fine for me on 2.6.24
it doesn't work with my device (a terratec cinergy xs hybrid device)
i will have a look at the weekend at the code (real life intrudes)

thank you for this.

regards
--
simon

_______________________________________________
linux-dvb mailing list
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb

Re: [linux-dvb] DVB-T support for original (A1C0) HVR-900

[Simon Kenyon]

Markus Rechberger wrote:
> On 3/24/08, Aidan Thornton <makosoft@googlemail.com> wrote:
>   
>> Hi,
>>
>> I've been attempting to get something that can cleanly support DVB-T
>> on the original HVR-900, based on up-to-date v4l-dvb and Markus'
>> em2880-dvb (that is to say, something that could hopefully be cleaned
>> up to a mergable state and won't be too hard to keep updated if it
>> doesn't get merged). The current (somewhat messy, still incomplete)
>> tree is at http://www.makomk.com/hg/v4l-dvb-em28xx/ - em2880-dvb.c is
>> particularly bad. I don't have access to DVB-T signals at the moment,
>> but as far as I can tell, it works. Anyone want to test it? General
>> comments? (Other hardware will be added if I have the time,
>> information, and someone willing to test it.)
>>
>>     
>
> This is more than incomplete, VBI is missing (nor tested with various
> video standards), and this device is 2 years old and not getting sold
> anymore.
> It's better to keep everything together at mcentral.de (this will very
> likely be moved to an empia domain in near future).
>   

i agree that it is better to keep everything together
could i suggest that you have a look at www.linuxtv.org
> I will join Empia at 1st April 08, adding support for their new
> devices (and also improving support of the older ones).
>
> Markus
>
> _______________________________________________
> linux-dvb mailing list
> linux-dvb@linuxtv.org
> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>
>   


_______________________________________________
linux-dvb mailing list
linux-dvb@linuxtv.org
http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb