Hi Riccardo,
On Sunday 25 September 2011 16:06:53 Riccardo Magliocchetti wrote:
> Hello,
>
> i've started playing with opencv but the inlined python script does not
> work and these messages are shown in dmesg:
>
> [32452.730023] compat_ioctl32: unknown ioctl 'v', dir=1, #10 (0x4020760a)
> [32452.730043] ioctl32(python:10359): Unknown cmd fd(3)
> cmd(4020760a){t:'v';sz:32} arg(09f57f48) on /dev/video0
This is a V4L1 ioctl and the uvcvideo driver supports V4L2 only. V4L1 is
deprecated and has been removed from the kernel.
> This may well be an opencv issue.
>
> $ cat cvtest.py
> import cv
>
> capture = cv.CreateCameraCapture(0)
>
> cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_WIDTH, 640.0)
> cv.SetCaptureProperty(capture,cv.CV_CAP_PROP_FRAME_HEIGHT, 480.0)
>
> while True:
> img = cv.QueryFrame(capture)
> cv.ShowImage("camera", img)
> cv.WaitKey(10)
>
> kernel is 3.0 64 bit on 32 bit userspace, camera is 174f:5931, the
> camera works fine with luvcview.
--
Regards,
Laurent Pinchart
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