[mythtv] [Experimental PATCH] BIG DVB PATCH V3.2 Released

[Stuart Auchterlonie]

On Mon, Dec 20, 2004 at 10:46:41AM +0000, John Pullan wrote:
> On Mon, 2004-12-20 at 10:31 +0000, Tom Hughes wrote:
> > 
> > > I wish I knew how STB's really did this kind of stuff. I suspect that
> > > because it's propriety hardware they can do more stuff. or maybe we just
> > > need a better mechanism for detecting lack of lock in the scan case.
> > 
> > Well given that the UK muxes transmit a network table you only have
> > to find one frequency by scanning and you can then locate the others
> > using the network table so maybe they do that?
> > 
> 
> Which is what we do. But the pathological case is still not good. I'll
> have to have a play about with it sometime.
> 

Perhaps this can be optimized somewhat.
Initiate a scan of channels 21 thru 69 looking only a carrier.
Then once you find it, look for all the sub channels on that mux.

If in the case of the UK you find a network table that provides
information on the other mux channel locations then just skip to those
channels and scan them.

You can always allow for a fallback case of scanning everything,
maybe call it an exhaustive scan or something...


Stuart