New subject: [PATCH] S2API for vdr-1.7.0(1.7.1) quick hack

30 Sep 2008


      В сообщении от 30 September 2008 19:03:19 Darron Broad написал(а):
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In message 200809301707.06154.liplianin@tut.by, "Igor M. Liplianin"
wrote:
LO
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Hi,
I'm on Astra 19.2 and tested the following HD transponders :
Anixe HD
Arte HD
Astra HD+
first test results :
Arte HD tunes ok and plays fine.
Same here. Arte HD is a DVB-S2 transponder using the 8PSK modulation.
Locking goes without any problems at all.
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On Astra HD+ and Anixe HD im getting an error :
Astra HD+ en Anixe HD is on a DVB-S2 transponder which is using a
QPSK modulation.
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-- SNIP --
If you need further informations let me know.
I tested other DVB-S2 transponders which have a QPSK modulation. All
these didn't want to lock and gave a timeout. DVB-S2 Transponders
with=
a
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8PSK modulation did gave a lock (Hotbird has a couple, while I don't
have subscriptions to chose channels, I'm able to lock those).
So my first impression was, it's a missing parameter in the Frontend
struct. So I made some changes and check if the transponder is DVB-S2
and added parameters for DTV_PILOT (with data PILOT_AUTO) and when
QPSK is used with DVB-S2, to use the NBC_QPSK modulation (which is
needed f=
or
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DVB-S2 if I'm not mistaken) instead of regular QPSK.
However, didn't bring me the sollution I hoped for. I now have a
timeout, lost lock and regain lock, etc, etc, etc. But it's more then
=
it
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was before.
So I'm close. Currently I do have a small problem where I put in
parameters which shouldn't been given (oops!) and now my DVB-card
doesn't lock any more, I need to reboot first.
If you make an error in the params it can trip the property dump debug
output routine.
use this patch to catch invalid commands, there may be others to catch tho:
   http://dev.kewl.org/v4l-dvb/patches/s2-mfe-debug-dump-9036.diff
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I hope to start to work on it this further when I'm done with work.
I'=
ll
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keep you all posted :)
BTW, I did manage to get DVB-T working. At least it locks on on the
encrypted channels, but I didn't had time to check for image. Mainly
since DVB-T is my backup for channel-viewing and I wanted to focus on
the DVB-S2 problem.
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cu
Edgar (gimli) Hucek
Regards,
Niels Wagenaar
May I ask you, Niels or Edgar, would you try szap-s2 with parameter
-M3, wh=3D ich=3D20
means NBC_QPSK modulation. It is interesting for me, whether it works.
i'm=3D =3D20
not able to receive Astra HD+ and Anixe HD.
I will test it.
For your information, when I fixed up Manu's szap hack renaming it szap2
i had to add a whole bunch of options which were originally known as
`team' then they eventually became known later as `meow'
These are all necessary for the hvr-4000 with the cx24116 which is a
dumb part.
These params were:
-m : modulation 0=3DQPSK (DVB-S) 1=3DNBC-QPSK (DVB-S2) 2=3DNBC-8PSK
(DV=
B-S2)
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-e : fec 0=3DNONE 1=3D1/2 2=3D2/3 3=3D3/4 4=3D4/5 5=3D5/6 6=3D6/7
8=3D8=
/9 9=3D9/10 10=3D3/5
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11=3DAUTO -o : rolloff 0=3D0.20 1=3D0.25 2=3D0.35
  -w : pilot 0=3DOFF 1=3DON 2=3DAUTO
The cx24116 can't do auto-detect from what we know for any DVB-S2
paramet=
er
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not only modulation. I had to emulate auto-pilot in the demod. rolloff
seems superfluous in most cases but even then you must have an option to
allow it.
I will check your szap but raise the point above if not all these
options are catered for. If they are catered for and not named MEOW then
I will be disappointed, but will survive ;-)
Suddenly, pilot not implemented :-(=20
I get parameters from VDR(with part of source code, with perspective put
it= =20
back modified), think it is familiar for VDR users
    -S        : delivery system type DVB-S=3D0, DVB-S2=3D1
    -M        : modulation 1=3DBPSK 2=3DQPSK 3=3DNBC-QPSK(for DVB-S2)
5=3D= 8PSK
    -C        : fec 0=3DNONE 12=3D1/2 23=3D2/3 34=3D3/4 35=3D3/5 45=3D4/5
= 56=3D5/6 67=3D6/7=20
89=3D8/9 910=3D9/10 999=3DAUTO
    -O        : rolloff 35=3D0.35 25=3D0.25 20=3D0.20 0=3DUNKNOWN
So, szap-s2 can handle channels.conf line like this(though not compatible
w= ith=20
VDR, but similar):
poverkhnost:12111:lC34M5O0S1:0:27500:1201:1301:3201
It is not like I'm pretend on copyright here, I can easily remove my name
f= rom=20
sources. I pretend to be useful.
Welcome any other comments. Now it is valuable like gold.
:=) Igor, I was feeling mostly nostalgia for the `meow' options, I can see
the rewritten szap2 has much more to offer!
BTW, where do i get it?
Cya!
--
// /
{:)==={ Darron Broad darron@kewl.org
 \ \
Now szap-s2 is on
http://mercurial.intuxication.org/hg/szap-s2
Sourceforge not available yet :-(
Igor

Re: [vdr] [PATCH] S2API for vdr-1.7.0(1.7.1) quick hack