[sane-devel] Canon DR-9050C
philipgwyn at gmail.com
Tue Aug 21 21:01:05 UTC 2012
On Tue, Aug 21, 2012 at 2:44 PM, m. allan noah <kitno455 at gmail.com> wrote:
> It is quite possible that there is some option in the driver which is
> on by default, which requires high res or high depth scans.
> Particularly automatic deskew or edge detection type things.
It was late at night and I was pretty much out to lunch on that hypothesis.
My patch recognizes a DR-9050C by looking at the s->model_name. It
then sets s->is_9050C. There might be a better way to do this
(config file?) and probably a better name for this protocol.
I spent some time wasted time trying to figure out the set resolution,
position, etc block only to realize that it's the same as other DR
I tried to cargo-cult the e5 blocks, but it's not working; I don't
fully grok do_cmd(). Or maybe the e5 blocks are doing something
do_cmd() isn't ready for.
I had to hardcode the list of resolutions for the 9050C, because the
weren't reported properly.
With a patched driver, I can scan in colour, bw and grey scale at
various resolutions. Duplex scanning works. I still need to test the
-t, -l, -x, -y params.
However, if the scanner goes into suspend mode, canon_dr no longer
recognises it. The debug output talks about hitting it with a large
stick. I have to activate the scanner from the front panel or power
cycle it. The Canon binary driver manages to see it.
What's more if I interupt a scan with ^C, I have to power cycle the
scanner before doing another scan. The Canon binary driver also fails
to subsequent scans.
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