[linux-dvb] Re: Suggested (minor) change for channels.conf

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Jean-Claude Repetto wrote:
> 
> ----- Original Message -----
> From: "Klaus Schmidinger" <Klaus.Schmidinger@cadsoft.de>
> To: <linux-dvb@linuxtv.org>
> Sent: Friday, August 24, 2001 10:46 AM
> Subject: [linux-dvb] Re: Suggested (minor) change for channels.conf
> 
> > Sergei Haller wrote:
> > >
> > > high
> > >
> > > On Fri, 24 Aug 2001, Jean-Claude Repetto wrote:
> > >
> > > >
> > > > I think it is not totally sufficient. For example, you can have two
> Viaccess
> > > > CAMs, one with a TPS card, and the other with a swiss card. So it may
> be a
> > > > little more complex. Dave's solution is better, because you can use
> any CAMs
> > > > and cards.
> > >
> > > AFAI understand Klaus, you will be able to write any configuration you
> > > like, e.g. one called "Viaccess-TPS" and one called "Viaccess-Swiss"
> > > and specify for both of them which dvb card to use.
> >
> > That's the idea :-)
> >
> > Klaus
> 
> Thanks to the simulcrypt, some channels can be decrypted with different CAMs
> and cards.
> For example, AB1 on Astra can be received with a Mediaguard CAM and a Canal
> Satellite card, or with a Viaccess CAM and an ABSAT card. So you should
> allow to put several configuration names separated by commas in the Ca
> field.

No problem.
A simulcrypt entry might look like this

   Mediaguard/Viaccess = 6

and every DVB card that can provide either Mediaguard or Viaccess can be assigned
that value.

Let me construct a scenario:

modes.conf:

  FTA        = 0
  Betacrypt  = 1
  Seca       = 2
  Irdeto     = 3
  Mediaguard = 4
  Viaccess   = 5
  Mediaguard/Viaccess = 6

setup.conf:  

  DVB.1.Modes = 0
  DVB.2.Modes = 1
  DVB.3.Modes = 4 6
  DVB.4.Modes = 5 6

With this setup, DVB card #1 can only receive FTA channels, #2 can also
receive Betacrypt channels, #3 can receive both pure Mediaguard and
Mediaguard/Viaccess channels, while #4 can receive pure Viaccess and
also Mediaguard/Viaccess channels.

I guess this allows for unlimited configurations, or have I missed something?
Plus it is also not restricted to CA scenarios, but can also be used for
"exotic" setups, where channels can only be received by specific cards, even
if they are not encrypted.  

The channels.conf will, in its Ca field, contain exactly ONE number (0...6),
since it is part of the channel definition which mode it is broadcast in.
 
> Also, the same channel AB1 is broadcast on Astra and on HotBird. That
> becomes really complex to manage ...

I guess these would be separate channel entries, anyway, since I hardly
believe they would have the same transponders and/or PIDs. At least the
DiSEqC value would have to be different, depending on the satellite
infrastructure you have.

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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