Re: metadata node

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Hi Stanimir,

On Mon, 30 Jan 2017, Stanimir Varbanov wrote:

> Hi Guennadi,
> 
> On 01/11/2017 11:42 AM, Guennadi Liakhovetski wrote:

[snip]

> > In any case, _if_ we do keep the current approach of separate /dev/video* 
> > nodes, we need a way to associate video and metadata nodes. Earlier I 
> > proposed using media controller links for that. In your implementation of 
> 
> I don't think that media controller links is a good idea. This metadata
> api could be used by mem2mem drivers which don't have media controller
> links so we will need a generic v4l2 way to bound image buffer and its
> metadata buffer.

Is there anything, that's preventing mem2mem drivers from using the MC 
API? Arguably, if you need metadata, you cross the line of becoming a 
complex enough device to deserve MC support?

Thanks
Guennadi

> -- 
> regards,
> Stan
> 
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