[vdr] [PATCH] time warp

Stefan Huelswitt s.huelswitt at gmx.de
Thu Jun 23 17:55:11 CEST 2005

On 23 Jun 2005 Rainer Zocholl <UseNet-Posting-Nospam-74308- at zocki.toppoint.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.

>>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

>>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.


Stefan Huelswitt
s.huelswitt at gmx.de  | http://www.muempf.de/

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