[vlc-devel] [PATCH v2] Add support for reading EIA-608 closed captions via V4L2 VBI devices
dheitmueller at kernellabs.com
Mon Oct 29 16:26:53 CET 2012
On Mon, Oct 29, 2012 at 11:19 AM, Rémi Denis-Courmont <remi at remlab.net> wrote:
> Le lundi 29 octobre 2012 17:14:00, Devin Heitmueller a écrit :
>> (e.g. selecting the VBI node for a tuner while picking the
>> video node for a webcam).
> A webcam should not advertise VBi in its device capabilities bit field though.
Driver bugs aside, that is generally true. However you would get the
same bug if you had two tuners installed. Anyway you look at it, you
don't want to be automatically selecting a VBI device without the user
explicitly telling you to. Given the current state of the code, if
the user wants VBI then he has to explicitly provide the device (just
as he/she has to today with picking the correct ALSA device that
provides the audio)
Don't get me wrong, it absolutely and completely sucks that there
isn't a way to do this automatically (and I've been screaming this at
the v4l-dvb people for several years now).
Devin J. Heitmueller - Kernel Labs
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