Re: [v4l-utils PATCH 4/4] v4l2-ctl: Add support for META_OUTPUT buffer type

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On Tue, Jan 22, 2019 at 11:21:27AM +0100, Hans Verkuil wrote:
> On 01/22/19 10:47, Sakari Ailus wrote:
> > Hi Hans,
> > 
> > On Tue, Jan 22, 2019 at 09:19:42AM +0100, Hans Verkuil wrote:
> >> Hi Sakari,
> >>
> >> Can you check if this patch is needed at all? The latest v4l2-ctl should work
> >> for both meta capture and output, i.e. all meta options (v4l2-ctl --help-meta)
> >> just look up the buffer type of the video device and use that to list/set/get/try
> >> the formats.
> > 
> > That'd be one option. I guess we don't have that elsewhere, do we? In
> > practice it could work, but it'd prevent having the two queue types in the
> > same video node. It seems an improbable combination though.
> > 
> > I'd prefer keeping the options separate to maintain v4l2-ctl's ability to
> > access all aspects of the API, even if unlikely.
> 
> Well, you can add -out options for consistency, but the code remains the
> same :-)

Not quite: the option still determines which formats are being accessed
--- just like for SDR.

-- 
Sakari Ailus
sakari.ailus@xxxxxxxxxxxxxxx



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