[linux-dvb] How to access /dev/videoK from /dev/dvb/adapterN?
rjkm at metzlerbros.de
Fri Jun 16 21:39:22 CEST 2006
Klaus Schmidinger writes:
> An application that uses the LinuxDVB driver can access the
> DVB devices via /dev/dvb/adapterN/* (N = 0, 1, ...). However,
> when it wants to, for instance, capture the current image on
> a device (like VDR with its GRAB command), it needs to access
> /dev/videoK, where 'K' is a number that is not directly related
> to the 'N' mentioned above for the DVB device.
> So VDR has to do some guessing on which /dev/videoK device might
> belong to the /dev/dvb/adapterN device. This is getting particularly
> problematic if there are also other /dev/video devices that have
> nothing to do with any DVB devices.
> Is there a defined way in which an application can query a DVB
> device for its related /dev/video device?
Since upcoming cards with decoder and V4L interface for those will
need it too, should we add a call for this? In the DVB video device?
We might also need something like this for audio.
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