Re: Problem with c-qcam
Hakan.Lennestal@cdt.luth.se
Tue, 29 Jun 1999 20:23:03 +0200
In message <3778F684.1DB602B9@cisi.fr>, Pierre Morel writes:
> Hi,
>
> I've some problem with the quickcam driver.
> Here is what i've done to install it:
> [root@gurli /root]# modprobe parport_pc io=0x378 irq=7
> [root@gurli /root]# modprobe c-qcam.o
> [root@gurli /root]# mknod /dev/video0 c 81 0
>
> I can open the latest version of vic
> (www-mice.cs.ucl.ac.uk/multimedia/software)
>
> [root@gurli /root]# /root/tmp/vic_linux/vic_2.8_linux 224.10.10.10/10000
>
> V4l: trying /dev/video0... ok, Quickcam
> V4l: color; size: 80x60 => 320x240 (scales)
> V4l: ports: Camera
> V4l: depth=24, palette=rgb24
> V4l: ==> format { 411 422 cif } size { small cif } port { Camera }
> V4l: trying /dev/video1... open: No such device
> V4l: trying /dev/video2... open: No such device
> V4l: trying /dev/video3... open: No such device
>
>
> But when i try to transmit i get this message:
>
> ioctl VIDIOCGMBUF: Invalid argument
> mmap: Invalid argument
> V4l: device has no mmap support
> ioctl VIDIOCMCAPTURE even: Invalid argument
> ioctl VIDIOCMCAPTURE odd: Invalid argument
> ioctl VIDIOCSYNC: Invalid argument
> Segmentation fault (core dumped)
Two problems.
First, I don't know if the c-qcam kernel driver actually works.
Secondly, the app need to implement handling of non-dma devices such
as the c-qcam. The v4l vic:s I've seen don't.
There is however a special linux RH 6.0 c-qcam userspace version of vic
(must be run as root or suid root) at ftp://ftp.cdt.luth.se/mbone/Linux.
Regards.
/Håkan
---------------------------------------
e-mail: Hakan.Lennestal@lu.erisoft.se |
or Hakan.Lennestal@cdt.luth.se |
or hakan@tuttifrutti.nu |
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