85 lines
2.2 KiB
Groff
85 lines
2.2 KiB
Groff
.Dd Feburary 1, 1996
|
|
.Dt QCAM 4 i386
|
|
.Os FreeBSD
|
|
.Sh NAME
|
|
.Nm qcam
|
|
.Nd Connectix QuickCam(TM) parallel port camera driver
|
|
.Sh SYNOPSIS
|
|
.Cd device qcam0 at isa? at "IO_LPT1" conflicts
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm qcam
|
|
driver provides support for a Connectix
|
|
.Tn QuickCam
|
|
camera. It allows one to utilize all known modes, and may support
|
|
as many cameras as there are parallel ports available.
|
|
.Pp
|
|
When the
|
|
.Tn parallel\ ports
|
|
are probed during boot, the port will be scanned for the presence
|
|
of a camera.
|
|
.Sh KERNEL CONFIGURATION
|
|
The
|
|
.Nm
|
|
driver can share the same port with the lpt driver, however it is
|
|
reccommended that the lpt driver be configured for polled operation
|
|
if this sharing is to be done.
|
|
The auto-detection code for the camera is reported to
|
|
be flakey at times. Until this is resolved, it may be bypassed by
|
|
by adding "flags 1" to your kernel configuration.
|
|
.Sh IOCTLS
|
|
The following
|
|
.Xr ioctl 2
|
|
calls apply to
|
|
.Tn QuickCam
|
|
devices.
|
|
They are defined in the header file
|
|
.Aq Pa qcam.h .
|
|
.Pp
|
|
.Bl -tag -width QC_GET
|
|
.It Dv QC_GET
|
|
Read, from the kernel, the current configuration and status
|
|
information about camera.
|
|
.It Dv QC_SET
|
|
Configure the camera for various operating modes. Image size,
|
|
resolution, zoom, and luminosity controls are available.
|
|
.Sh NOTES
|
|
If the camera is not found at boot time, the
|
|
.Nm
|
|
driver will not be available for use.
|
|
.Sh FILES
|
|
.Bl -tag -width /dev/qcamX -compact
|
|
.It Pa /dev/qcam Ns Ar u
|
|
raw mode
|
|
.Tn QuickCam
|
|
camera unit
|
|
.Ar u ,
|
|
accessed as a read-only character device
|
|
.El
|
|
.Sh DIAGNOSTICS
|
|
None.
|
|
.Sh SEE ALSO
|
|
.Xr qcamcontrol 1
|
|
.br
|
|
The QuickCam reverse engineering project, http://www.crynwr.com/qcpc/
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver is new to
|
|
.Tn FreeBSD.
|
|
.Sh BUGS
|
|
The driver spin-waits in the kernel, which means on large transfers,
|
|
the system will be chewing down a lot of time. Doing full motion video
|
|
at 320x240 is not reccomended until this is fixed.
|
|
|
|
The driver's auto-detection code for finding a camera on a parallel port
|
|
is not reliable on all hardware. See the note above for bypass information.
|
|
.Sh AUTHOR
|
|
The
|
|
.Nm
|
|
driver was written by Paul Traina borrowing heavily
|
|
from code written by Thomas Davis, Scott Laird, Paul Chinn, and additional
|
|
work done by Russel Nelson.
|
|
.Sh TRADEMARK
|
|
QuickCam is a registered trademark of Connectix Inc.
|