On Sat, 29 Apr 2006, Manu Abraham wrote:
> Hello Patrick,
>
> Patrick Boettcher wrote:
> >
> > On Tue, 25 Apr 2006, Manu Abraham wrote:
> >
> >
> >
> > +enum fe_bandwidths {
> > + FE_BANDWIDTH_QUERY = 0x00000000,
> > + FE_BANDWIDTH_8_MHZ = 0x00000001,
> > + FE_BANDWIDTH_7_MHZ = 0x00000002,
> > + FE_BANDWIDTH_6_MHZ = 0x00000004,
> > + FE_BANDWIDTH_AUTO = 0x10000000
> > +};
> >
> > In DVB-H other bandwidth can be used. IMHO, it would be more useful to
> > specify the bandwidth in MHz, instead of have defines.
> >
>
>
> After going through the specs, i could only find an additional Bandwidth
> specification of 5MHz. Is it specific to some hardware that you were looking
> at ?
As far as I understand, it is very easy for broadcasters to switch to
other bandwidths (maybe just in LBAND).
When you want to use linux-dvb for testing other bandwidths you currently
have no chance than hardwiring in the driver.
Why not
enum fe_bandwidths {
+ FE_BANDWIDTH_QUERY = 0x00000000,
+ FE_BANDWIDTH_8_MHZ = 80000000,
+ FE_BANDWIDTH_7_MHZ = 70000000,
+ FE_BANDWIDTH_6_MHZ = 60000000,
+ FE_BANDWIDTH_AUTO = 0xffffffff,
Then we can reach maximum flexibility by losing binary-combinations... Not
sure if this is OK.
Additionally I'm not sure if there is a dvb-t/h demod which can guess the
bandwidth... So the FE_BANDWIDTH_AUTO might be not useful - except when
the dvb_frontend is doing the interpretation (iterating through the fixed
bandwidths).
regards,
Patrick.
--
Mail: patrick.boettcher@xxxxxxx
WWW: http://www.wi-bw.tfh-wildau.de/~pboettch/
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