[mythtv] MHEG-5 support for New Zealand Profile

[Steven Ellis]

David Matthews wrote:
> Steven Ellis wrote:
>   
>> Ok I've now got some MHEG streams showing up and some sample data.
>> Problem is I can't get it to display anything.
>>
>> Have a look at http://www.mythtv.co.nz/mythtv/?p=33 for details on my
>> attempts so far and debug output from mythfrontend.
>>
>> I also tried using rb-download to try and suck the MHEG data out of the
>> stream but it didn't get very far as shown below.
>>
>> Dave - what tools did you use to debug the mheg and dsmcc data?
>>     
>
> I've looked at your log and it seems that it was loading and running the
> MHEG.  The difficulty was when it got to here:
> {:Scene  ( '/s.m' 0 )
>      :Items (
>          {:Link ( '/s.m' 1 )
>              :EventSource  ( '/s.m' 0 )
>              :EventType UserInput
>              :EventData 300
>              :LinkEffect (
>                  :Launch ( ( '/epg/a' 0 ) )
>              )
>          }
>      )
>      :InputEventReg 13
>      :SceneCS 720 576
> }
> This is waiting for user input.  It is setting the input event register
> (i.e. the set of buttons to recognise) to 13 and waiting for a user
> event number 300.  Until that event arrives nothing will happen.  The
> mapping of buttons to EventData codes and the input event register
> values are defined by the profile.  For the UK the red button generates
> 100, green 101 etc.  The input register values used are 3, 4 or 5.  You
> can find this in the UK profile at
> http://www.dtg.org.uk/publications/books/mheg_profile_106.pdf under
> UserInput.
>
> You need to find out or guess the key and input register values for the
> NZ profile and then modify MHIContext::OfferKey in mhi.cpp to generate
> the appropriate input values.
Awesome. Thanks for that Dave. I'm waiting to here back from the local
MHEG-5 implementation team on their modifications to the UK 1.0.6 profile.

I'll try a test build with one of the F keys remapped to code 300 and
see what we get.

Steve

-- 
Steven Ellis - Technical Director
OpenMedia Limited
email   - steven at openmedia.co.nz
sales   - sales at openmedia.co.nz
support - support at openmedia.co.nz
website - http://www.openmedia.co.nz