[mythtv] [Q]: can someone point me to where myth "decides" if a stream is encrypted or not?

[Emmanuel]

James Courtier-Dutton a écrit :
> On 6 June 2010 17:32, Emmanuel <eallaud at gmail.com> wrote:
>   
>> Hi all,
>> I actually want to do the following: there is one sat channel here which is
>> free that is no decryption is required whereas most channels are encrypted.
>> The problem is that this stream is flagged in the dvb tables as encrypted
>> and then myth tries, rightly so, to decrypt which does not  work. SO my
>> question is where is the code where the stream is detected as needing
>> decryption and how can I permanently change that (I could even write a patch
>> with a button in the setup to ask for that if others need that sort of
>> broken tables work-around).
>> TIA
>> Bye
>> Manu
>>     
>
> If a single program is not encrypted within a mux that has all other
> programs encrypted, myth can handle it fine.
> I have not checked the source yet, but I would assume that if would
> try to decrypt on a per packet basis.
> So, you would be looking for the individual packets to be wrongly marked.
> So, I think the most likely place for the wrong detection is in the
> isencrypted() function (or one of a similar name)
> Having looked at the code, the test is currently incorrect, so you
> might wish to correct it.
> For example the test tests a 2 bit field.
> Values     Correct identified as encrypted     Myth identification
> 00           0                                               0
> 01           0                                               1
> 10           1                                                1
> 11           1                                               1
>
> Kind Regards
>   
Thanks I'll look into that !
Bye
Manu