[mythtv] How can I get hold of the current selected transport stream id?

[roger]

 From within the eit code can anyone give me a heads up on how I can get 
hold of the current transport service id when I am processing an EIT 
"other" section? I need this to handle  a specific case for the UK 
Terrestrial DTV network. Looking at the source it does not seem obvious. 
What have I missed?

Cheers


Roger