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65 lines
1.8 KiB
Groff
65 lines
1.8 KiB
Groff
.Dd Feburary 29, 1996
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.Dt QCAMCONTROL 1
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.Os FreeBSD
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.Sh NAME
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.Nm qcamcontrol
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.Nd Connectix QuickCam control utility
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.Sh SYNOPSIS
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.Nm qcamcontrol
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.Op Fl b Ar brightness
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.Op Fl c Ar contrast
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.Op Fl d Ar depth
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.Op Fl p Ar device
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.Op Fl w Ar whitebalance
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.Op Fl x Ar xsize
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.Op Fl y Ar ysize
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.Op Fl z Ar zoom
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.Sh DESCRIPTION
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.Nm qcamcontrol
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is a program to demonstrate control over the Connectix QuickCam(TM)
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parallel port camera and to take a single frame picture.
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.Pp
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If the device not specified, "/dev/qcam0" is assumed.
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If no command is given, then
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.Nm qcamcontrol
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will use its defaults to grab a single frame from the camera. The control
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program will output a portable pixmap (ppm) file to stdout.
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.Pp
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The following options are available:
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.Bl -tag -width "flag whitebalance"
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.It Fl b Ar brightness
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control the brightness of the picture (0..255)
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.It Fl c Ar contrast
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control the contrast of the picture (0..255)
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.It Fl d Ar depth
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16 or 64 shades of gray (specified as 4 or 6 bits per pixel)
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.It Fl p Ar device
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quickcam device (port) (default is /dev/qcam0)
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.It Fl w Ar whitebalance
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amount of white in the picture (0..255)
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.It Fl x Ar xsize
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width of image (320 or less)
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.It Fl y Ar ysize
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height of image (240 or less)
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.It Fl z Ar zoom
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zoom in (1, 1.5x, or 2x)
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.El
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.Sh BUGS
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.Nm qcamcontrol
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does not enforce a proper aspect ratio for x y sizes.
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In practice, standard picture sizes are 320x240 and 180x160 and all smaller
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sizes that maintain a similar aspect ratio.
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Also, the camera is notoriously finicky until you get just the right
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combination of white-balance, contrast, and brightness. Improper values
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will return all-black or all-white pictures.
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.Sh FILES
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.Bl -tag -width /dev/qcam0 -compact
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.It Pa /dev/qcam0
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.El
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.Sh AUTHOR
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Paul Traina
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.Sh HISTORY
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The
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.Nm qcamcontrol
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command appeared in FreeBSD 2.1.1
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