81 lines
1.7 KiB
Groff
81 lines
1.7 KiB
Groff
|
.\"
|
||
|
|
.\" $Id$
|
||
|
|
.\"
|
||
|
|
.Dd January 28, 1998
|
||
|
|
.br
|
||
|
|
.in +0.5i
|
||
|
|
.Dt BKTR 4 i386
|
||
|
|
.Os FreeBSD 2.2
|
||
|
|
.Sh NAME
|
||
|
|
.Nm brooktree
|
||
|
|
.Nd video capture driver
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
.Nm device bktr0
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
The
|
||
|
|
.Nm bktr
|
||
|
|
driver provides support for PCI
|
||
|
|
.Em video
|
||
|
|
capture on low cost, high performance boards. The driver is heavily based on
|
||
|
|
the Matrox Meteor driver. The bktr driver should support most video cards
|
||
|
|
based on the
|
||
|
|
.Em Brooktree Bt848 Video Capture Chip.
|
||
|
|
.Pp
|
||
|
|
Specifically, the following cards are known to work:
|
||
|
|
.br
|
||
|
|
.Em Hauppage Wincast TV
|
||
|
|
.br
|
||
|
|
.Em STB TV PCI Television Tuner
|
||
|
|
.br
|
||
|
|
.Em Miro PC TV
|
||
|
|
.br
|
||
|
|
.Em Intel Smart Video Recorder III
|
||
|
|
.Pp
|
||
|
|
The driver currently supports the following features:
|
||
|
|
.br
|
||
|
|
.in +0.5i
|
||
|
|
PCI to PCI dma transfer
|
||
|
|
.br
|
||
|
|
clipping
|
||
|
|
.br
|
||
|
|
yuv
|
||
|
|
.br
|
||
|
|
rgb16
|
||
|
|
.br
|
||
|
|
rgb24
|
||
|
|
.br
|
||
|
|
rgb32
|
||
|
|
.in -0.5i
|
||
|
|
.Pp
|
||
|
|
The following kernel parameters may be used to further configure the driver:
|
||
|
|
.Pp
|
||
|
|
.Em options "BROOKTREE_ALLOC_PAGES=xxx"
|
||
|
|
specifies the number of contiguous pages to allocate when successfully
|
||
|
|
probed. The default number of pages allocated by the kernel is 216.
|
||
|
|
This means that there are (216*4096) bytes available for use.
|
||
|
|
.Pp
|
||
|
|
.Sh AUTHOR
|
||
|
|
This driver is based on the work of
|
||
|
|
.An Jim Lowe Aq james@miller.cs.uwm.edu ,
|
||
|
|
.An Mark Tinguely Aq tinguely@plains.nodak.edu ,
|
||
|
|
.An Amancio Hasty Aq hasty@star-gate.com
|
||
|
|
and a bunch of other people.
|
||
|
|
.Sh FILES
|
||
|
|
.Bl -tag -width /usr/share/examples/meteor -compact
|
||
|
|
.It Pa /usr/share/examples/meteor
|
||
|
|
Examples of what you can do with the (similarly designed) Meteor driver.
|
||
|
|
.It Pa /usr/ports/graphics/fxtv
|
||
|
|
A display program utilizing the bktr driver - requires that
|
||
|
|
.Em The X Window System
|
||
|
|
and
|
||
|
|
.Em The Ports Collection
|
||
|
|
also be installed.
|
||
|
|
.El
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr meteor 4
|
||
|
|
.Sh HISTORY
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
driver first appeared in
|
||
|
|
.Fx 2.2 .
|