Section: SANE Scanner Access Now Easy (5)
Updated: 14 Jul 2008
This backend expects device names of the form:
Where port is the I/O port address at which the device resides. This address is normally specified in hexadecimal using C syntax (e.g., 0x37b) and may be prefixed with the letter "u" (e.g., u0x37b) to force the backend to access the camera in uni-directional mode.
The contents of the qcam.conf file is a list port addresses that may be connected to a Connectix QuickCam. Empty lines and everything starting from a hash mark (#) up to the end of a line are ignored. A sample configuration file is shown below:
:0x37b # /dev/lp0
0x378 # /dev/lp1
u0x278 # /dev/lp2 forced in uni-directional mode
0x3bc # /dev/lp0 (alternate address):
In general, it is safest to list only the port addresses that really correspond to a QuickCam. For example, if one of the listed addresses actually connect to a printer, then starting up this backend will cause the printer to perform a device reset (which is generally undesirable).
Support is currently limited to the color version of the QuickCam. The black-and-white camera is starting to work too, but I don't believe it works in all cases yet. Reportedly, acquiring images of certain sizes work fine, but others result in shifted images (sounds like a problem due to byte-padding).
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