James Amendolagine wrote:
> I'm playing with v4l using a hauppauge card (WinTV).
>
> I'm bring up a TV display using the mmap interface. How do I know that
> the tv window size that I requested is wrong? --By the tv window size,
> I mean the size of the image written by video4linux to the mmaped buffer
> when the:
>
> ioctl(vf, VIDIOCMCAPTURE, &video_mmap); call is made.
>
> Although the image is written, ioctl returns a -1 error, and the "errno"
> value reports an error of (int) 16.
>
> Jamie
>
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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
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