Or is there a standard way this is supposed to be handled?
Yes. Since ages. The ioctl is called DMX_SET_SOURCE.
DMX_SET_SOURCE seems to not be implemented anywhere, all it does is
return EINVAL. I also fail to find any useful documentation about what
it is supposed to do.
There are no mechanism to connect a frontend with specific dvr or
demux devices in the current API. But you demand it for the caio device.
I think there is currently no useful API to connect devices. Every few
months there comes a new device which deprecates how I enumerate devices
and determine types of FE's.
The most useful way to query devices seems to be using HAL, and I think
this is the correct way in Linux, but DVB-API may be lacking with
providing the necessary information. Maybe this is the direction we
should consider? Device names under /dev seem to be irrelevant nowadays.
Best regards,
Martin Vidovic
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