Bradford Barr wrote:
Excuse my ignorance, but I'm not exactly sure what you mean by using the
other init.
Do I just throw a #define DUMMY_VIDIOC_QUERYCAP at the top of V4L.cpp
and recompile?
You'll probably need to make sure that both of the V4L::init methods are
not defined. There is one for V4L1 and one for V4L2, and you should make
sure only one gets evaluated.
Obviously we need a way of testing which V4L a user has, and then using
that version. I'm not sure Pyro has been tested with V4L2, so there very
well may be other issues.
Of course, I'm only guessing that this is the problem to begin with...
-Doug
Brad
On Mon, Oct 20, 2008 at 11:43 AM, Douglas S. Blank <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Bradford Barr wrote:
Hey all,
I'm new to Pyro, and I'm having some issues with the V4LCamera.
When I run a Test robot with a V4LCamera device it asks me for
the device, width, height and channel. I leave all of those
default and get an error:
V4L constructor '/dev/video0' (160 x 120) x 3 ch = 0
Initializing Video4Linux /dev/video0..Error: with
Videochannelioctl VIDIOCGCHAN: Invalid argument
lsmod shows that I have v4l1_compat installed, and I've used the
camera with other programs (mplayer and opencv). I'm runnning
Archlinux, kernel 2.6.27. <http://2.6.27.> <http://2.6.27.> Any
help would be greatly appreciated.
Thanks in advance,
Brad
Brad,
I don't have time to dig into this this week, but I would suspect it
might be a V4L1 vs V4L2 issue. Take a look at:
pyrobot/camera/v4l/V4L.cpp
it looks like there is a section of code marked with
DUMMY_VIDIOC_QUERYCAP that might work for you. You could use that
init rather than the other, and re-make the file.
Let us know if that helps (or if you solve the problem). Thanks,
-Doug
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