The reason that DVB playback with xine is broken in 3.3 is that the userspace
semantics of FE_GET_EVENT have changed. Xine tunes into a DVB channel as follows:
* discards stale frontend events by calling FE_GET_EVENT until there is none
left.
* calls FE_SET_FRONTEND with the new frequency.
* starts polling for new frontend events by calling FE_GET_EVENT again.
Xine assumes that *every* FE_GET_EVENT after calling FE_SET_FRONTEND will have
dvb_frontend_event.parameters.frequency set to the new frequency, if this
channel exists. However, under Linux 3.3, at least the first new event with a
newly-plugged-in device has a frequency parameter of zero. I am assuming that
Linux is populating the frequency parameter from an internal data structure
because xine behaves normally once some other DVB application manages to set it
to something other than zero. And xine then continues to behave normally until I
unplug the DVB adapter and plug in back in again.
So the question is: why is there no frequency for this first FE_GET_EVENT? Are
the parameters incomplete, or shouldn't this event have been sent in the first
place?
Cheers,
Chris
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