[Pxc] pxc development

[Robert Schwebel]

Hello Alessandro, 

On Tue, 22 May 2001, Alessandro Rubini wrote:
> I'm adding support for a list of buffers.

I have worked with your PXC driver and a PXC200 PCI board some time ago
and I must say the driver is great. Unfortunately, we had some problems
with the camera we used, because it was an interlaced model and we had
difficulties with 50 Hz disturbances from the factory the system was
installed in, so at the moment I'm working with a digital 12 bit camera
from PCO.

All these cameras have nearly the same features: an optical image comes in
at one end and a digital frame is written to some buffers at a certain
frame rate at the other end. Besides that, there are some functions to
control parameters. However, I'm wondering if there is a way to make a
generic interface all these camera drivers could offer to the user.

Does anybody have experience with such a system? What does v4l offer?
Would it be a solution (having in mind that images can be 8...16 Bit
grayscale or even colour)? Is there another possibility? Do you know the
SANE interface definition for scanners? It has a very nice callback scheme
which can be used to implement generic options to a imaging device;
perhaps something like that would be great for video as well.

Just some thoughts...

Robert