9 .Nd video capture driver
19 driver provides support for PCI
23 capture on low cost, high performance boards.
24 The driver is based on the Matrox Meteor driver and uses the same API.
25 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
67 The default number of pages allocated by the kernel is 216.
68 This means that there are (216*4096) bytes available for use.
70 .Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
71 .Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
73 One of these options can be used to set the default video format for the driver.
74 This fixed random hangs and lockups with the VideoLogic Captivator PCI card.
76 The following sysctls may be used to further configure the driver:
78 .Em sysctl hw.bt848.card=nnnn
79 This can be used to override the card make which was detected at boot time.
81 is set to an integer from 1 to 13 taken from the following table:
83 .Bl -tag -compact -width 22n
108 .It VIDEO_HIGHWAY_XTREME
112 .Em sysctl hw.bt848.tuner=nnnn
113 This can be used to override the tuner make which was detected at boot time.
115 is set to an integer from 1 to 13 taken from the following table:
117 .Bl -tag -compact -width 22n
136 .It PHILIPS_FR1236_NTSC
137 9 /* These have FM Radio support */
138 .It PHILIPS_FR1216_PAL
139 10 /* These have FM Radio support */
140 .It PHILIPS_FR1236_SECAM
141 11 /* These have FM Radio support */
149 This driver is based on the work of
150 .An Jim Lowe Aq james@miller.cs.uwm.edu ,
151 .An Mark Tinguely Aq tinguely@plains.nodak.edu ,
152 .An Amancio Hasty Aq hasty@star\-gate.com ,
153 .An Roger Hardiman Aq roger@FreeBSD.org
154 and a bunch of other people.
156 .Bl -tag -width /usr/share/examples/meteor -compact
157 .It Pa /usr/share/examples/meteor
158 Examples of what you can do with the (similarly designed) Meteor driver.
159 .It Pa /usr/ports/multimedia/fxtv
160 A TV and Camera display program utilizing the bktr driver - requires that
161 .Em The X Window System
163 .Em The Ports Collection
165 .It Pa /usr/ports/misc/alevt
166 A program to capture and display Teletext (VideoText) pages - requires that
167 .Em The X Window System
169 .Em The Ports Collection
171 .It Pa /usr/ports/audio/xmradio
172 An FM Radio Tuner for cards which have an FM Radio tuner fitted. - requires that
173 .Em The X Window System
175 .Em The Ports Collection
188 driver first appeared in