[vdr] Re: unique channel id

["Ulrich Petri" <ulope@gmx.de>]

Klaus Schmidinger wrote:
> 
> Ulrich Petri wrote:
> > 
> > But this would imply we need some central channel 
> registration, in order
> > to get updates to the channel data, from one source.
> > Perhaps this could be done through a web interface?!
> 
> I don't think such a "central channel registration" is a good idea.
> What if new channels appear in the data stream? Are you going 
> to wait until some
> central mechanism has assigned a number to them? And how 
> would you react on actual
> parameter changes? If, for instance, channels are identified 
> by their NID+PID+SID
> (plus source and, optionally APID) the system could 
> dynamically update changes in
> the name, transponder frequency, polarization (or other 
> tuning parameters), VPID
> and (at least for tv channels) APIDs. The NID+PID+SID already 
> _is_ the unique
> identification of a channel (again, maybe with the additional 
> APID for channels
> that break this rule).
> 

Ok you have a point here.
Then i would suggest building a hash key from the NID+PID+SID+APID+...
so we have something that feels more like a "identifier" rather that 5
diffrent fields to look at.

What do you think?

Cu Ulrich



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