[sane-devel] Canon MP510 support modifications (generation 1)

[m. allan noah]

It is not unusual for a machine to need the left and right side of
image to fall on some byte boundary of a full width scan, or the delta
x to need to be somehow 'even' (number of bytes, number of pixels,
etc). Of course, this machine could have some other crazy limits no
one has seen before :)

allan

On Mon, Aug 9, 2010 at 11:23 AM, Gernot Hassenpflug
<aikishugyo at gmail.com> wrote:
> Hello,
>
> I am checking the Canon MP510 under SANE. This is a generation 1
> device, apparently, and it seems to have the interesting quirk that
> while the y and delta-y for scan area can be freely chosen, and
> delta-x obeys the standard rule for generation 1 devices, the x
> location too must be within some rule (still determining via
> UsbSnoop).
>
> I haven't seen anything to limit the scan x location in the code
> before, and cannot say whether other devices also exhibit this quirk.
> So I'll add an exception for the MP510 only, for now.
>
> Apart from that, it behaves fine at all resolutions (up to 1200) in
> color and greyscale (no native B/W mode available in the MP510).
>
> Regards,
> Gernot
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