1.\" 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 1.3 2003/09/07 17:04:00 hmp Exp $ 4.\" 5.Dd January 28, 1998 6.Dt BKTR 4 7.Os 8.Sh NAME 9.Nm brooktree 10.Nd video capture driver 11.Sh SYNOPSIS 12.Cd device bktr 13.Pp 14.Cd device iicbus 15.Cd device iicbb 16.Cd device smbus 17.Sh DESCRIPTION 18The 19.Nm bktr 20driver provides support for PCI 21.Em video 22capture and 23.Em VBI 24capture on low cost, high performance boards. 25The driver is based on the Matrox Meteor driver and uses the same API. 26The bktr driver should support most video cards 27based on the 28.Em "Brooktree Bt848/849/878/879 Video Capture Chip" . 29The driver also supports 30.Em FM Radio 31if the tuner supports it. 32.Pp 33Specifically, the following cards are known to work: 34.Bd -unfilled -offset indent 35.Em Hauppauge Wincast TV and WinTV/PCI 36.Em STB TV PCI Television Tuner 37.Em Miro PC TV 38.Em Intel Smart Video Recorder III 39.Em AverMedia cards 40.Em Video Highway XTreme 41.Em VideoLogic Captivator PCI 42.Ed 43.Pp 44The driver currently supports the following features: 45.Bd -unfilled -offset indent 46PCI to PCI dma transfer 47clipping 48yuv 49rgb16 50rgb24 51rgb32 52.Ed 53.Pp 54On these cards, tuners and other components are interconnected with an I2C bus. 55The Brooktree848 chips act as a master device on the bus to control them. 56Therefore, 57.Xr iicbus 4 , 58.Xr iicbb 4 59and 60.Xr smbus 4 61controller declarations are mandatory to activate bktr support. 62.Pp 63The following kernel parameters may be used to further configure the driver: 64.Pp 65.Em options "BROOKTREE_ALLOC_PAGES=xxx" 66specifies the number of contiguous pages to allocate when successfully 67probed. 68The default number of pages allocated by the kernel is 216. 69This means that there are (216*4096) bytes available for use. 70.Bd -unfilled 71.Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL 72.Em options BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC 73.Ed 74One of these options can be used to set the default video format for the driver. 75This fixed random hangs and lockups with the VideoLogic Captivator PCI card. 76.Pp 77The following sysctls may be used to further configure the driver: 78.Pp 79.Em sysctl hw.bt848.card=nnnn 80This can be used to override the card make which was detected at boot time. 81.Ql nnnn 82is set to an integer from 1 to 13 taken from the following table: 83.Pp 84.Bl -tag -compact -width 22n 85.It MIRO 861 87.It HAUPPAUGE 882 89.It STB 903 91.It INTEL 924 93.It IMS_TURBO 945 95.It AVER_MEDIA 966 97.It OSPREY 987 99.It NEC_PK 1008 101.It IO_GV 1029 103.It FLYVIDEO 10410 105.It ZOLTRIX 10611 107.It KISS 10812 109.It VIDEO_HIGHWAY_XTREME 11013 111.El 112.Pp 113.Em sysctl hw.bt848.tuner=nnnn 114This can be used to override the tuner make which was detected at boot time. 115.Ql nnnn 116is set to an integer from 1 to 13 taken from the following table: 117.Pp 118.Bl -tag -compact -width 22n 119.It NO_TUNER 1200 121.It TEMIC_NTSC 1221 123.It TEMIC_PAL 1242 125.It TEMIC_SECAM 1263 127.It PHILIPS_NTSC 1284 129.It PHILIPS_PAL 1305 131.It PHILIPS_SECAM 1326 133.It TEMIC_PALI 1347 135.It PHILIPS_PALI 1368 137.It PHILIPS_FR1236_NTSC 1389 /* These have FM Radio support */ 139.It PHILIPS_FR1216_PAL 14010 /* These have FM Radio support */ 141.It PHILIPS_FR1236_SECAM 14211 /* These have FM Radio support */ 143.It ALPS_TSCH5 14412 145.It ALPS_TSBH1 14613 147.El 148.Sh AUTHORS 149.An -nosplit 150This driver is based on the work of 151.An Jim Lowe Aq james@miller.cs.uwm.edu , 152.An Mark Tinguely Aq tinguely@plains.nodak.edu , 153.An Amancio Hasty Aq hasty@star\-gate.com , 154.An Roger Hardiman Aq roger@FreeBSD.org 155and a bunch of other people. 156.Sh FILES 157.Bl -tag -width /usr/share/examples/meteor -compact 158.It Pa /usr/share/examples/meteor 159Examples of what you can do with the (similarly designed) Meteor driver. 160.It Pa /usr/ports/graphics/fxtv 161A TV and Camera display program utilizing the bktr driver - requires that 162.Em The X Window System 163and 164.Em The Ports Collection 165also be installed. 166.It Pa /usr/ports/misc/alevt 167A program to capture and display Teletext (VideoText) pages - requires that 168.Em The X Window System 169and 170.Em The Ports Collection 171also be installed. 172.It Pa /usr/ports/audio/xmradio 173An FM Radio Tuner for cards which have an FM Radio tuner fitted. - requires that 174.Em The X Window System 175and 176.Em The Ports Collection 177also be installed. 178It also requires 179.Em Motif 180or the 181.Em lesstif 182port. 183.El 184.Sh SEE ALSO 185.Xr meteor 4 186.Sh HISTORY 187The 188.Nm 189driver first appeared in 190.Fx 2.2 . 191