BKTR(4) Kernel Interfaces Manual BKTR(4) NAME brooktree -- 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 Me- teor 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 dri- ver: options BROOKTREE_ALLOC_PAGES=xxx specifies the number of contiguous pages to allocate when successfully probed. The default number of pages allo- cated 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 AUTHORS 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. FILES /usr/share/examples/meteor Examples of what you can do with the (similarly designed) Meteor driver. /usr/ports/graphics/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 in- stalled. /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 brooktree driver first appeared in FreeBSD 2.2. FreeBSD 4.9 January 28, 1998 BKTR(4)
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