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bktr.4freebsd

Langue: en

Version: 300634 (debian - 07/07/09)

Section: 4 (Pilotes et protocoles réseau)


BSD mandoc

NAME

bktr - Brooktree Bt848/849/878/879 and Pinnacle PCTV video capture driver

SYNOPSIS

device bktr

device iicbus device iicbb device smbus

DESCRIPTION

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 driver should support most video cards based on the Brooktree Bt848/849/878/879 Video Capture Chip Also supported are most Pinnacle PCTV video cards. Furthermore, the driver supports FM Radio if the tuner supports it.

The driver currently supports the following features:

 PCI to PCI dma transfer
 clipping
 yuv
 rgb16
 rgb24
 rgb32
 

On the supported 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 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 23 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
ASKEY_DYNALINK_MAGIC_TVIEW
14
LEADTEK
15
TERRATVPLUS
16
IO_BCTV3
17
AOPEN_VA1000
18
PINNACLE_PCTV_RAVE
19
PIXELVIEW_PLAYTV_PAK
20
TERRATVALUE
21
PIXELVIEW_PLAYTV_PRO_REV_4C
22
Bt848_MAX
23

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 16 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
MT2032
14
LG_TPI8PSB12P_PAL
15
Bt848_MAX
16

HARDWARE

The driver supports video capture cards based on the Brooktree Bt848/849/878/879 chips, as well as Pinnacle PCTV cards, including:

FILES

/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.

SEE ALSO

meteor(4)

HISTORY

The driver first appeared in Fx 2.2 .

AUTHORS

An -nosplit 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 , An Roger Hardiman Aq roger@FreeBSD.org and a bunch of other people. Support for Pinnacle PCTV Rave cards was added by An Branko Lankester Aq branko@euro.net .
AGRESSION

M : Encore un pitbull qui a attaqué un enfant !
P : Le con... un enfant ! Alors que c'est les petites vieilles qui sont pleines de pognon !