[cpia] Driver for Creative WebCAM III (and general driver design issues)

[Gleicon S. Moraes]

Well, I think such design would be a good start point to use news features
like v4l-2, new chips, and to make the things cleaner:

chip -> device ( parport or usb) -> access method ( v4l, v4l-2, or even
another spec , i dont know :D ).

The only point is: we already have the driver going stable ( well, at least
for me its *very* stable and production quality) and changes like this, take
time to be stable and done...
This design in *theory* are a good step to portability, and a good way to
add features like news chips and video formats, and a good way to port it
between O.S's.
Well, Just comments ...
Best regards

Gleicon S. Moraes
p.s.; excuse my bad english.



----- Original Message -----
From: Nicolas Roussel <nicolas.roussel@gmd.de>
To: <fabiano.reis@uol.com.br>
Cc: <nicolas.roussel@gmd.de>; <cpia@risc.uni-linz.ac.at>
Sent: Tuesday, February 29, 2000 3:57 PM
Subject: Re: [cpia] Driver for Creative WebCAM III (and general driver
design issues)


>
> > I forgot to remember: I'm using a WebCam Creative III in paralell port.
>
> Hum... Then I guess you might be able to use some of the cpia_pp code
> and the USB OV511 driver to create a new driver.
>
> Maybe Peter Pregler or Scott Bertin can help you with this (I don't
> know the internals of the cpia_pp driver). You should also contact
> Mark McClelland, the guy responsible for the OV511 USB driver.
>
> I think this PP/USB question about the OV511 shows once again that the
> drivers could be split into smaller parts. I can see at least three :
>
>   - what the chip can do
>   - how it is attached to the computer (here, PP/USB)
>
>   - how the capabilities of the chip are mapped onto V4L API
>
> The unified CPiA driver already separates the two first parts. Why not
> take the V4L API out of cpia.c ? We could then have a cpia_v4l.c, a
> cpia_v4l2.c or even another user space library.
>
> Comments anybody ?
>
> Nicolas
>
> --
> ________________________________________________________________________
>
> Nicolas Roussel                            mailto:nicolas.roussel@gmd.de
> GMD - FIT.HCI, Schloss Birlinghoven      http://www-ihm.lri.fr/~roussel/
> 53754 St. Augustin, Germany       phone: +49 2241 14-2154 / fax: 14-2065
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