Hi Doug,
Great to hear you're working on the code.
My code is more or less based on video/grabber-v4l2.cpp from SVN UCL
vic. The main issue the SVN code is that it only supports the YUYV pixel
format and not YUV420 common with webcams. Ideally I want to get it to
support all the pixel formats that the V4L version did.
Yes this true - it's something I've been meaning to fix (there was
some code from MASH that did a slighly better job).
There were other issues with incorrectly initialised ioctl arguments
with the PWC V4L2 driver and capture size.
Ah ok.
> There are still a number of drivers in the kernel (including some for
> webcams) that are still video4linux version one only - Now all video
> capture devices are listed as /dev/video - one has to open the devices
> and see which ones can be opened with V4L1 or V4L2 - thus the UCL
> version compiles both drivers.
I'm currently compiling both, but the AGTk sets the VIC_DEVICE env
variable to let AG vic know which capture device it should use.
So in grabber-v4l2.cpp I currently have:
#ifdef HAVE_V4L2
const char *myDev = getenv("VIC_DEVICE");
and grabber-video4linux.cpp I have a ifndef version of the above.
Another approach may need to be used instead of the VIC_DEVICE env
variable, e.g. using the so called vic device nickname.
oh ok - I guess another way would be to pass and device as a common
line argument - or pick it up from the resources - like the most of
the other config stuff.
> We are in the process having the AG features ported into the UCL
> version of vic - either by ANL or by UCL, we also plan to integrate
> work from NCHC vic - under our SUMOVER project - as mentioned by me at
> the recent AG retreat.
>
> We would welcome any developer work on vic - we are keen to bring on
> board any active developers and potentially provide commit access to
> the SVN repository.
I was actually going to contact you guys about merging my Mac TCL/Tk
Aqua AG vic port (in ANL's CVS) to UCL vic, but haven't gotten around to
it yet.
This would be great - we'd like to have the aqua stuff and It would
also be good to wrap in the video capture code for OSX (do have a link
to the src of that grabber?)
We can create an SVN account on our subversion repository if you would like.
Thanks alot,
Piers.
Cheers,
Doug.