[mythtv] Re : Re : [Q]: CRC detection for packets

manu eallaud at yahoo.fr
Wed Jul 16 15:57:04 UTC 2008

Le 16.07.2008 08:30:42, Daniel Kristjansson a écrit :
> On Wed, 2008-07-16 at 08:22 -0400, manu wrote:
> > Hmm replying to myself: I found a doc describing the different
> packet 
> > structure, and especially for table of private type (user defined,
> ID 
> > between 0x80 and 0xff IIRC) the CRC bit is definitely not where we
> look 
> > for it). I'll take that into account and modify the code
> accordingly.
> > Sorry for the noise.
> No problem, it's an unfortunate thing that the CRC is not always 
> there
> and not always at the end of the packet. But that's just the way it 
> is
> so we key off the table type to determine where and whether to check
> the CRC.

Actually for private table there is one bit which tells us if the table 
is just some raw data, so no CRC, no structure, or if you can find some 
structure around the raw data, including CRC.
I will put the patch alone on the ticket when it is ready.

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