[PATCH] Re: [linux-dvb] [PATCH] Multi protocol support (stage #1)

Manu Abraham abraham.manu at gmail.com
Mon May 22 16:56:15 CEST 2006

Johannes Stezenbach wrote:
> On Mon, May 22, 2006, Manu Abraham wrote:
>> Johannes Stezenbach wrote:
>>> Anyway, one last try. Let's go back to the very beginning:
>>> - we need to extend frontend API for DVB-S2, DVB-H etc.
>>> - we cannot do so without breaking backward compatibility
>>>  because of mistakes made when defining the current API
>>> - so now that we define new API, we don't want to repeat
>>>  the same mistake, but design in a way that make future
>>>  extensions possible without too much pain for
>>>  driver and application developers
>>> - right from the beginning my position was to do the
>>>  *minimal* work necessary to support the *current*
>>>  requirements -- keep it simple and stupid
>>> - and add other stuff later when the need arises
>>> - and all along you totally ignored this and instead
>>>  want to cram every last detail into the API that
>>>  you think *might* be necessary
>>> - wrt requirements: you need to think through how
>>>  an application will work (how does dvbscan discover
>>>  DVB-S2 transmission? where do the tuning parameters
>>>  come from?)
>> currently the tuning parameters come from the 
>> s2_satellite_delivery_system_descriptor
>> what i have in there is the sis-mis flag and the transport stream 
>> identifier to select the streams
> Anyone seen a s2_satellite_delivery_system_descriptor in any broadcast?
> There are DVB-S2 braodcasts on Astra 19.2E, do they have
> s2_satellite_delivery_system_descriptors?

Well, there was another great question how can Conditional Access be 
used, but there aren't any CA descriptors..


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