[linux-dvb] Re: Stability of turning filters on and off

[Niklas Peinecke <n.peinecke@web.de>]

Dave Chapman wrote:
> hi,
>
> I'm writing an application that involves starting and stopping various 
> filters on the same multiplex.  Obviously, I want this to be as reliable 
> as possible with the wide range of DVB cards now supported.
>
> My question to the driver developers (especially for the less mature 
> drivers) is should I set all required filters once when first tuning to 
> the multiplex, and then discard packets from /dev/dvb/adapterN/dvrN that 
> I don't need.  Or is it 100% reliable to turn filters on and off from 
> userspace?
>
> i.e. if I am recording data from PID 1 and then want to add PID 2 for a 
> short time, will PID 1 come through uninterrupted?
I can only speak for the skystar2 driver, but IMHO it should be 
perfectly safe to turn filters on and off from userspace (in fact, 
that's what scan does).

Niklas



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