I have a CP Technologies gooseneck "snake" webcam. It cost me about $20 on Amazon a few years ago. Cheap and poor image quality, but it works.
I had it installed on an older laptop, but now wanted to use it for development with barcode decoding.
This particular webcam shows up, through
dmesg, as a Pixart CIF Single Chip, vendor ID 093a and product ID 2468.
The full demsg output when plugging in the webcam was:
ohci_hcd 0000:00:03.1: wakeup usb 2-1: new full speed USB device using ohci_hcd and address 2 usb 2-1: new device found, idVendor=093a, idProduct=2468 usb 2-1: new device strings: Mfr=1, Product=2, SerialNumber=0 usb 2-1: Product: CIF Single Chip usb 2-1: Manufacturer: Pixart Imaging Inc. usb 2-1: configuration #1 chosen from 1 choice
Through the compatibility list at http://mxhaard.free.fr/spca5xx.html I was able to determine that it works under the spca5xx driver with gbrg stream.
My target machine is an AMD x86_64 (Athlon 64) laptop running OpenSuse 10.2. I searched through YaST Software Management (I have a ***load of repositories installed) but didn't turn anything up. After following a HOWTO I happened to find here I added a HTTP repository on software.opensuse.org with directory
/download/drivers:/webcam/openSUSE_10.2_Update_standard/. I then opened the Software Management tool (all of this just because I didn't want to deal with finding the correct package for the kernel I happen to be running) and searched for "spca". I selected the "spca-5xx-kmp-default-20060501_188.8.131.52_0.7-13.4.x86_64.rpm" package and installed it.
Once this was done, I plugged in the webcam. The output of dmesg was now:
usb 2-1: new full speed USB device using ohci_hcd and address 3 usb 2-1: new device found, idVendor=093a, idProduct=2468 usb 2-1: new device strings: Mfr=1, Product=2, SerialNumber=0 usb 2-1: Product: CIF Single Chip usb 2-1: Manufacturer: Pixart Imaging Inc. usb 2-1: configuration #1 chosen from 1 choice Linux video capture interface: v2.00 /usr/src/packages/BUILD/spca5xx-20060501/obj/default/drivers/usb/spca5xx.c: USB SPCA5XX camera found. Pixart PAC207BCA /usr/src/packages/BUILD/spca5xx-20060501/obj/default/drivers/usb/spca5xx.c: [spca5xx_probe:5479] Camera type GBRG /usr/src/packages/BUILD/spca5xx-20060501/obj/default/drivers/usb/spca5xx.c: [spca5xx_getcapability:1764] maxw 352 maxh 288 minw 160 minh 120 usbcore: registered new driver spca5xx /usr/src/packages/BUILD/spca5xx-20060501/obj/default/drivers/usb/spca5xx.c: spca5xx driver 00.60.00 registered
So we know that the camera is recognized. Running
ls -l /dev/vid* shows something like:
lrwxrwxrwx 1 root root 6 2007-12-13 02:30 /dev/video -> video0 crw-rw----+ 1 root video 81, 0 2007-12-13 02:30 /dev/video0
so we see that the device (as per the default) should be at
/dev/video0. Note that group ownership is the group "video", so your user should be a member of that group.
For the rest of the setup, I consulted the linux.com Webcam HOWTO. All I need to do right now is capture through a script, so streamer, part of Xawtv would do. Back to YaST and Software Management for an install. As suggested in the Linux.com article, I took a stab and installed the Xawtv package, hoping that streamer was included. Unfortunately, it wasn't. Searching http://rpm.pbone.net showed that, for OpenSuSE 10.2, it was in the v4l-tools package. I installed that.
Once streamer was installed, I gave it a quick test with
streamer -c /dev/video0 -b 16 -o outfile.jpeg
and viola! A picture.
To see what I did with the webcam, take a look at my barcode decoding page.