[Gambas-devel] V4L2 for Gambas ...

[Benoit Minisini]

On samedi 17 janvier 2009, Gareth Bult wrote:
> Hi,
>
> After plugging in a new camera and finding it only supports V4L2 and hence
> doesn't work (at all) with the Gambas V4L interface, I sat down and
> re-coded a component from scratch for V4L2. This is now working and
> includes conversion routines for non-RGB devices. (the #2 API is actually
> quite different to #1)
>
> To get a clean start, I've called it "VideoDevice2" and apart from that
> (and a few properties I'm still in the process of implementing) it's a drop
> in replacement for the current "VideoDevice" object.
>
> Question:: should I submit this as a new module / new object type, or
> should I try to integrate it into VideoDevice such that people don't need
> to worry about whether they are using V4L or V4L2 ? (i.e. so a new object
> type is not needed?)
>
> Gareth.

Is V4L2 compatible with V4L? I mean, do all V4L features exist in V4L2?

Apparently no user library is needed to use V4L or V4L2, so you can use both 
API in the same module, with the same interface. 

If V4L can be entirely replaced by V4L2, then you can just use V4L2, and drop 
the old code.

Otherwise, you must think how you can know when you must use V4L, and when you 
must use V4L2. If you can't decide, then add an optional argument to the 
VideoDevice constructor that will tell which API to use.

Regards,

-- 
Benoit Minisini