[Nottingham] Mega-pixel webcams

[Jim Moore]

are you using the xsane backend? Seems to work for me, it uses the
kernel driver as given and performs the decompression then passes the
image data as a png bitmap (still trying to persuade it to pass it as
a TIFF but there ya go...)

Thought: is the limitation you're coming across due to the V4L
processor which dates from 2003?

On 11/18/09, Martin <martin at ml1.co.uk> wrote:
> Jim Moore wrote:
> [---]
>> *A little searching brought up the controller ID: it's a Microdia
>> SN9C120, so do the following I found (for Ubuntu 9.x, YMMV):
>>
>> START
>> -------
> [---]
>> # Install and load it.
>> $ sudo modprobe videodev
>> $ sudo modprobe compat_ioctl32 # Just needed on a 64bit System. Not
>> necessary on x86 32bit.
>> $ sudo insmod ./sn9c20x.ko
>> $ sudo install -d /lib/modules/`uname -r`/misc
>> $ sudo install sn9c20x.ko /lib/modules/`uname -r`/misc
>> $ sudo depmod -a
>> $ sudo modprobe sn9c20x
> [---]
>> THE END
>
> Easier than that, they're already in there:
>
> gspca_sn9c20x          33776  1
> gspca_main             27408  3 gspca_sn9c20x
> videodev               43744  2 gspca_main
> usbcore               219188  8
> gspca_sn9c20x,snd_usb_audio,snd_usb_lib,gspca_main,ehci_hcd,ohci_hcd
>
> The LD_PRELOAD trick includes/avoids the compat_ioctl32 for this x86_64
> system:
>
> LD_PRELOAD=/usr/lib64/libv4l/v4l1compat.so cheese
>
>
> Trying to list the device capability gives only that 640x480 is the
> maximum resolution... :-(
>
> LD_PRELOAD=/usr/lib64/libv4l/v4l1compat.so videodog -s -d /dev/video0
>
> VideoDog Version 0.31
>
> Device Name     : USB20 Camera
> Device          : /dev/video0
> Max Width       : 640
> Max Height      : 480
>
> Current Settings :
>
>         Mode            : NTSC
>         Brightness      : 36494
>         Hue             : 32768
>         Colour          : 45746
>         Contrast        : 41120
>         Input names     :
>                 0 - sn9c20x
>
>
>
> Cheers,
> Martin
>
> --
> ----------------
> Martin Lomas
> martin at ml1.co.uk
> ----------------
>
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