[vdr] [PATCH] time warp

Stefan Huelswitt s.huelswitt at gmx.de
Thu Jun 23 20:36:42 CEST 2005


On 23 Jun 2005 Rainer Zocholl <UseNet-Posting-Nospam-74308- at zocki.toppoint.de> wrote:
> s.huelswitt at gmx.de(Stefan Huelswitt)  23.06.05 15:55
> 
> Once upon a time "Stefan Huelswitt " shaped the electrons to say...
> 
>>On 23 Jun 2005 Rainer Zocholl <UseNet-Posting-Nospam-74308- at zocki.topp
>>> oint.de> wrote: s.huelswitt at gmx.de(Stefan Huelswitt)  22.06.05 15:11
>>>
>>>>If CRC checking is enabled on dmx-filter setup
>>>>(dmx_sct_filter_params.flags |= DMX_CKECK_CRC),
>>>>the driver does it for you.
>>>
>>> And what happens with the data if it fails?
>>> Is it decarded or just "tagged" to be invalid?
> 
>>AFAIK it's discarded by the driver.
> 
> Then a wrong time would never reach VDR.

See line below ;)

>>>>VDR doesn't enables the check.
>>>
>>> Ah, that explains easily the "garbage" in "time", or?
>>> Does that explain the "unknown picture type" problem too?
> 
>>AFAIK CRC checking only applies to section data and 
>>not to PES data.
> 
> 
>>>>This would be difficult,
>>>>as not all tables are CRC protected.
>>>
>>> VDR knows which tables are CRC protected, or not?
> 
>>I think this can easily be tested out (if not documented
>>somewhere in the DVB specs), but VDRs filter API would
>>have to be extended to support CRC selection.
> 
> qwww...;.(
> 
> Thanks anyway!
> Rainer---<=====>                         Vertraulich
>              //
>            //                              
>          <=====>--------------ocholl, Kiel, Germany ------------
> 
> 
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-- 
Stefan Huelswitt
s.huelswitt at gmx.de  | http://www.muempf.de/



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