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