Re: [libdc] stereo camera question

[Paul B. <dpa...@gm...>]

Stefan Richter wrote:
>
> Perhaps you have two different versions of libdc1394 installed, and
> coriander is being linked against the old one.  Or this libdc1394
> instance was configured with the juju backend at build time, which  
> would
> be kind of sad.  Or you are running coriander as a user who does not
> have permission to access /dev/fw1 (or whichever file represents the
> camera at the time --- fw1 would be typical though).
>
>> SVS doesn't work with the new stack.
>
> Any idea why not?  If it is libraw1394 based, it should just  
> continue to
> work (in theory) independently of which kernel drivers are present, if
> SVS was linked against libraw1394 v2 (ideally the newest one).
>
One version of libdc1394 is installed. I built it from source.

I had set /dev/fw1access so everyone has rw access.

SVS is linked against the old libraw, and the source for the libraries  
is not provided, unfortunately.

When I try to rebuild coriander with the new kernel, I run into  
package inconsistencies. Maybe I'll just have to wait a few more  
versions of linux until things are more stable.

David Moore wrote:
>
> On Mon, Jun 14, 2010 at 1:44 PM, Paul Benjamin <dpa...@gm... 
> >wrote:
>>
>> My problem now appears to be in userspace. I cannot get coriander  
>> to see
>> the new
>> stack (it always asks for ieee1394). I must not be building it  
>> properly.
>> SVS doesn't work
>> with the new stack. I'm not sure how to get video from the camera  
>> with the
>> new stack.
>>
>>
> If you set the environment variable DC1394_DEBUG=1 prior to running
> coriander, you should get some extra debugging information generated  
> from
> libdc1394.  This should help narrow things down.

Did not have any effect for me.
>
> Also, consider using the example programs such as "grab_gray_image"  
> that
> come with libdc1394.  That way you can figure out if libdc1394 or  
> coriander
> is the problem.  By the way, with the new stack, libdc1394 uses the  
> kernel
> directly and does not go through libraw1394.

grab_gray_image gives:
Using camera with GUID 1687300011660
libdc1394 error: Could not get a valid M0N08 code

Thanks,
Paul