[ros-users] call for testing: camera1394 in C-turtle

[Jack O'Quin]

On Wed, Jun 16, 2010 at 12:13 PM, Patrick Beeson <beeson.p at gmail.com> wrote:
>
>> The camera's tech manual says it supports *both* "absolute" (float)
>> and "relative" (unsigned int) values for shutter.  I assumed (naively)
>> that when absolute is available that would be better to use.
>>
>> Still not sure why set_absolute_value() is not working. There don't
>> seem to be many absolute camera features around, yet. Does anyone have
>> a camera other than the Sony XCD series with an absolute feature
>> value?
>>
>
> Jack, it seems that shutter is the only feature that uses absolute on our
> the Sony XCD models.  I looked atthe coriander source, and it NEVER uses the
> 'absolute' calls, it relys purely on the non-absolute calls.
> Can we simply change the code to not use absolute settings for now?  If a
> camera works in Coriander, then we'd like it to work in camera1394 as well,
> which means, not using float values, but uints.
>
>

Coriander does call dc1394_feature_set_absolute_value() in tools.c
SetAbsValue(), called from on_abs_entry_activate() in callbacks.c.

If there are not any other absolute value features of interest, your
workaround may be our best option for this release.

Would you send me your patch, please?
-- 
 joq