[linux-dvb] TechniSat Skystar 1 CI (Twinhan clone) ca_zapnotworking

Paul Sokolovsky paul at maxnet.ru
Wed Jul 6 03:09:37 CEST 2005


----- Original Message ----- 
From: "Sigmund Augdal" <sigmund at snap.tv>
To: <linux-dvb at linuxtv.org>
Sent: Tuesday, July 05, 2005 9:38 PM
Subject: Re: [linux-dvb] TechniSat Skystar 1 CI (Twinhan clone) 
ca_zapnotworking


> On Tue, 2005-07-05 at 17:57 +0200, Dominique Dumont wrote:
>> Manu Abraham <manu at kromtek.com> writes:
>>
>> >> is a CAM support in latest versions. It is not working with Twinhan
>> >> because (as I understand) VLC uses different API (low-level?) but
>> >> all needed information is already prepared.
>> >
>> > Reversing the processed information might be a herculean task, so i
>> > would say that a write from scratch to create a CA_PMT object is the
>> > best ..
>>
>> I guess that VLC creates a CA_PMT messages (i.e. an APDU) which is
>> encapsulated in a SPDU (session level) which is encapsulated in a TPDU
>> (transport level) and sent to the CAM.
> Indeed.
>>
>> To support High level CI, you'll have to plug something in VLC to send
>> the CA_PMT before the encapsulation done at session level.
> I have this code written allready, but for some unknown reason it does
> not work. Neither does ca_zap, so I really do not have anything to test
> with. I heard talks about some bugs in some parser related to ca_zap,
> and desided to delay my work untill that was sorted out.

What is really important - to implement 'query' instead of 'ok_descramble' 
and get the reply message from the module application - then we will have 
the code (reason) for the possible error and will see that pids in CAM are 
correct (or not).

Paul

>
> Sigmund
>>
>> HTH
>>
>>
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>
>
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