brooktree -- video capture driver
device bktr
device iicbus
device iicbb
device smbus
The bktr driver provides support for PCI video capture and VBI capture on
low cost, high performance boards. The driver is based on the Matrox
Meteor driver and uses the same API. The bktr driver should support most
video cards based on the Brooktree Bt848/849/878/879 Video Capture Chip.
The driver also supports FM Radio if the tuner supports it.
Specifically, the following cards are known to work:
Hauppauge Wincast TV and WinTV/PCI
STB TV PCI Television Tuner
Miro PC TV
Intel Smart Video Recorder III
AverMedia cards
Video Highway XTreme
VideoLogic Captivator PCI
The driver currently supports the following features:
PCI to PCI dma transfer
clipping
yuv
rgb16
rgb24
rgb32
On these cards, tuners and other components are interconnected with an
I2C bus. The Brooktree848 chips act as a master device on the bus to
control them. Therefore, iicbus(4), iicbb(4) and smbus(4) controller
declarations are mandatory to activate bktr support.
The following kernel parameters may be used to further configure the
driver:
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.
options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
One of these options can be used to set the default video format for the
driver. This fixed random hangs and lockups with the VideoLogic Captivator
PCI card.
The following sysctls may be used to further configure the driver:
sysctl hw.bt848.card=nnnn This can be used to override the card make
which was detected at boot time. `nnnn' is set to an integer from 1 to
13 taken from the following table:
MIRO 1
HAUPPAUGE 2
STB 3
INTEL 4
IMS_TURBO 5
AVER_MEDIA 6
OSPREY 7
NEC_PK 8
IO_GV 9
FLYVIDEO 10
ZOLTRIX 11
KISS 12
VIDEO_HIGHWAY_XTREME 13
sysctl hw.bt848.tuner=nnnn This can be used to override the tuner make
which was detected at boot time. `nnnn' is set to an integer from 1 to
13 taken from the following table:
NO_TUNER 0
TEMIC_NTSC 1
TEMIC_PAL 2
TEMIC_SECAM 3
PHILIPS_NTSC 4
PHILIPS_PAL 5
PHILIPS_SECAM 6
TEMIC_PALI 7
PHILIPS_PALI 8
PHILIPS_FR1236_NTSC 9 /* These have FM Radio support */
PHILIPS_FR1216_PAL 10 /* These have FM Radio support */
PHILIPS_FR1236_SECAM 11 /* These have FM Radio support */
ALPS_TSCH5 12
ALPS_TSBH1 13
This driver is based on the work of Jim Lowe <james@miller.cs.uwm.edu>,
Mark Tinguely <tinguely@plains.nodak.edu>, Amancio Hasty
<hasty@star-gate.com>, Roger Hardiman <roger@FreeBSD.org> and a bunch of
other people.
/usr/share/examples/meteor Examples of what you can do with the (similarly
designed) Meteor driver.
/usr/ports/multimedia/fxtv A TV and Camera display program utilizing the
bktr driver - requires that The X Window
System and The Ports Collection also be
installed.
/usr/ports/misc/alevt A program to capture and display Teletext
(VideoText) pages - requires that The X
Window System and The Ports Collection also
be installed.
/usr/ports/audio/xmradio An FM Radio Tuner for cards which have an FM
Radio tuner fitted. - requires that The X
Window System and The Ports Collection also
be installed. It also requires Motif or the
lesstif port.
meteor(4)
The brooktree driver first appeared in FreeBSD 2.2.
FreeBSD 5.2.1 January 28, 1998 FreeBSD 5.2.1 [ Back ] | 