[mythtv] DVB and check encrypted channel

[Denis Grilli]

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Hi, i don't have DVB card with cam support and often any Italian FTA channel 
encrypt your program (copyright problem).
When they are encrypted and i tune channel, mythfrontend freeze (beacuse 
backend don't fill ringbuffer..).
My idea is to check if channel is encrypted and don't to tune channel (or 
pause playing and tell it by osd);
The question: how can i check from dvbchannel.cpp if channel is encrypted??
I don't know dvb specification and is to hard for me

Thank's for suggestion  
- -- 
Denis Grilli - denis at denisgrilli.it
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