Dave Schmitz wrote:
> James Amendolagine wrote:
>
> > OK, I'm now using the
> >
> > ioctl(vf, VIDIOCSYNC, &j);
> >
> > call to block while v4l is finished writing the mmap. The error was
> > reporting that the device was busy. I still don't know how to get the
> > information about the window size though.
> >
> > Jamie
>
> Hey Jamie...
>
> Not sure if this is really the answer you're looking for but anyway.....
>
> If you do a..
> struct video_capability videoCapability;
> ioctl(_videoDevice, VIDIOCGCAP, &videoCapability)
>
> and look at...
> videoCapability.minwidth
> videoCapability.minheight
> videoCapability.maxwidth
> videoCapability.maxheight
>
Those work for maximum sizes, but what happens if I ask for a 256x256 image?
If the hardware supports it, then it will be OK, but if it doesn't, it looks
like v4l tries to return something which is close, but I can't figure out
how to determine what size it selected.
>
> This will tell you the min/max capture sizes of the card... Based on that
> info you know the info for a correct call to..
> struct video_mmap videoMmap;
> ioctl(_videoDevice, VIDIOCMCAPTURE, &videoMmap)
>
> Hope this helps...
>
> Cheers,
>
> -Smity
>
> --
> _____________________________________________________________________
> * PULL-THE-PLUG, SLICE THE PIE: A fantasy in which offspring mentally
> tallies up the net worth of his parents.
> _____________________________________________________
> Dave Schmitz Interact-TV
> [EMAIL PROTECTED] http://www.interact-tv.com
> Ph: 720.406.9399 Fax: 720.406.8424
>
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