2 .\" $FreeBSD: src/share/man/man4/bktr.4,v 1.9.2.9 2002/03/29 09:55:39 schweikh Exp $
3 .\" $DragonFly: src/share/man/man4/bktr.4,v 1.2 2003/06/17 04:36:58 dillon Exp $
10 .Nd video capture driver
20 driver provides support for PCI
24 capture on low cost, high performance boards. The driver is based on
25 the Matrox Meteor driver and uses the same API. The bktr driver should support most video cards
27 .Em "Brooktree Bt848/849/878/879 Video Capture Chip" .
28 The driver also supports
30 if the tuner supports it.
32 Specifically, the following cards are known to work:
33 .Bd -unfilled -offset indent
34 .Em Hauppauge Wincast TV and WinTV/PCI
35 .Em STB TV PCI Television Tuner
37 .Em Intel Smart Video Recorder III
39 .Em Video Highway XTreme
40 .Em VideoLogic Captivator PCI
43 The driver currently supports the following features:
44 .Bd -unfilled -offset indent
45 PCI to PCI dma transfer
53 On these cards, tuners and other components are interconnected with an I2C bus.
54 The Brooktree848 chips act as a master device on the bus to control them.
60 controller declarations are mandatory to activate bktr support.
62 The following kernel parameters may be used to further configure the driver:
64 .Em options "BROOKTREE_ALLOC_PAGES=xxx"
65 specifies the number of contiguous pages to allocate when successfully
66 probed. The default number of pages allocated by the kernel is 216.
67 This means that there are (216*4096) bytes available for use.
69 .Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
70 .Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
72 One of these options can be used to set the default video format for the driver.
73 This fixed random hangs and lockups with the VideoLogic Captivator PCI card.
75 The following sysctls may be used to further configure the driver:
77 .Em sysctl hw.bt848.card=nnnn
78 This can be used to override the card make which was detected at boot time.
80 is set to an integer from 1 to 13 taken from the following table:
82 .Bl -tag -compact -width 22n
107 .It VIDEO_HIGHWAY_XTREME
111 .Em sysctl hw.bt848.tuner=nnnn
112 This can be used to override the tuner make which was detected at boot time.
114 is set to an integer from 1 to 13 taken from the following table:
116 .Bl -tag -compact -width 22n
135 .It PHILIPS_FR1236_NTSC
136 9 /* These have FM Radio support */
137 .It PHILIPS_FR1216_PAL
138 10 /* These have FM Radio support */
139 .It PHILIPS_FR1236_SECAM
140 11 /* These have FM Radio support */
148 This driver is based on the work of
149 .An Jim Lowe Aq james@miller.cs.uwm.edu ,
150 .An Mark Tinguely Aq tinguely@plains.nodak.edu ,
151 .An Amancio Hasty Aq hasty@star\-gate.com ,
152 .An Roger Hardiman Aq roger@FreeBSD.org
153 and a bunch of other people.
155 .Bl -tag -width /usr/share/examples/meteor -compact
156 .It Pa /usr/share/examples/meteor
157 Examples of what you can do with the (similarly designed) Meteor driver.
158 .It Pa /usr/ports/graphics/fxtv
159 A TV and Camera display program utilizing the bktr driver - requires that
160 .Em The X Window System
162 .Em The Ports Collection
164 .It Pa /usr/ports/misc/alevt
165 A program to capture and display Teletext (VideoText) pages - requires that
166 .Em The X Window System
168 .Em The Ports Collection
170 .It Pa /usr/ports/audio/xmradio
171 An FM Radio Tuner for cards which have an FM Radio tuner fitted. - requires that
172 .Em The X Window System
174 .Em The Ports Collection
187 driver first appeared in