[mythtv] MythTV Digicipher II support
mark.buechler at gmail.com
Mon Jul 24 17:42:12 UTC 2006
Can you give some examples of cards based on that frontend?
On 7/24/06, Yeasah Pell <yeasah at schwide.com> wrote:
> Mark Buechler wrote:
> > Here in NA there are quite a few free DCII feeds available. I've been
> > doing some research on whether it's possible to receive these feeds
> > via a PCI card similar to a DVB card. So far I've found one which is
> > capable of decoding DCII signals but doesn't yet have driver support.
> > I've also been researching the software side and from what I can find
> > the DCII format is very similar to the DVB standard with the exception
> > of a few additional tables which need parsing.
> > Has anyone ever done any work on DCII systems or know of any standards
> > documents concerning this standard? The DVB card which is capable of
> > decoding DCII is the Genpix 8psk module. Does anyone know of anymore
> > hardware decoders supporting DCII? FTA in NA is spotty at best. It
> > seems there are more DCII FTA feeds available than DVB feeds. For NA
> > users, DCII support would a great addition.
> The cx24123-based frontends are capable of DCII. Changes that would be
> required to get it to function:
> * A way to select DCII mode from the DVB API.
> * Changes of the values of one or two cx24123 registers based on this
> * The FEC code rate table is different for DCII mode, so that would need
> to be driven on a different table depending on the mode.
> Not a big deal really. I assume any other cards that support DCII would
> require similar driver changes. The API change might be contentious,
> especially since the multistandard DVB API effort would provide a much
> nicer framework to make this work with, but it's currently in "political
> mythtv-dev mailing list
> mythtv-dev at mythtv.org
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