[sane-devel] frame and batch mode

[Giuseppe Sacco]

Hi all,
I am slowly working on the coolscan2 backend and I am looking at
tiffscan for batch scanning.

What I see is that any frontend that would drive a batch scan should
manage different type of feeder and pages. Probably the easier one is
the ADF case where the scanner load/eject every page; but the trickier
one is the stripe case: we may load/eject a stripe, but we need to batch
frames inside the stripe.

When a frontend offer parameters like --batch-from-page/frame and
--batch-count, it should be able to understand what feeder is present
and how to ask for a specific frame.

So, my questions: is there already any standard for those action? Is
there any defined rule for how to name a backend parameter like
"--frame-number"? Is there any way to know what feeder types are
available at a given time?

Thanks,
Giuseppe