[vdr] Re: Conditional access questions

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

Mark Watson wrote:
> I am trying to get VDR working with a somewhat custom setup and would 
> appreciate some help. 
> Basically I have modified a digital STB to get a DVB stream out of it. I wrote 
> a kernel driver so that it is presented to Linux as a normal DVB device. The 
> frontend device is implemented by sending IR commands to the STB using LIRC 
> (and a horrible userspace/kernelspace hack using named pipes and filp_open!).
>
> The problem I have is with handling tuning and conditional access properly. I 
> have to tune to the correct channel, not just the correct transponder. This 
> is because the box only descrambles the current channel. Ideally I want to be 
> told by VDR "tune to transponder X to listen to service Y" all in one 
> request.
>
> As a temporary hack I generated a custom channels.conf with the service id in 
> place of frequency. To tune I simply tell the STB to go to the channel 
> containing that service. This mostly works except I lose the ability to have 
> automatically updating channels.conf. It also seems ugly.
>
> I presume this should be done using the CA device, but I can find no 
> documentation on how this works:-( Can anyone suggest anything? Has anyone 
> else tried anything similar?
Why don't you just create a plugin something like the 'sky' plugin
that comes with VDR? In there you can take whatever channel data
you need to do the switch.

Klaus