I'm having a problem getting v4l2 to capture, using the bttv 0.8.38
driver. I have enumerated the device, and manage to queue my buffers up
ok, and start the streaming without error. But then I do the following:
...
FD_ZERO(&fds);
FD_SET(vid, &fds);
tv.tv_sec = 10;
tv.tv_usec =0;
i = select(vid + 1, &fds, 0, 0, &tv);
if(i == -1)
perror("select error");
if(i == 0)
perror("select timeout");
if(FD_ISSET(vid, &fds))
{
vb.type = V4L2_BUF_TYPE_CAPTURE;
if(ioctl(vid, VIDIOC_DQBUF, &vb) < 0)
{
perror("couldn't dq buf");
return -1;
}
...
When I run, it gives me:
couldn't dq buf: Input/output error
Why does DQBUF return -IOERR?
Eagle
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