BKTR(4)

NAME
bktr - Brooktree Bt848/849/878/879 PCI TV tuners and video capture boards

SYNOPSIS
bktr* at pci?
radio* at bktr?

#include <dev/ic/bt8xx.h>

option BKTR_ALLOC_PAGES=nnn
option BKTR_SYSTEM_DEFAULT=XXX
option BKTR_OVERRIDE_CARD=nnn
option BKTR_OVERRIDE_MSP=n
option BKTR_OVERRIDE_TUNER=nnn

DESCRIPTION
The bktr driver provides support for PCI video capture and VBI capture on low cost, high performance boards. This 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:

    Animation Technologies FlyVideo
    AOpen VA1000
    Askey/Dynalink Magic TView
    ATI TV-Wonder and Wonder/VE
    AverMedia cards
    Hauppauge Wincast TV and WinTV/PCI
    IMS TV Turbo
    Intel Smart Video Recorder III
    I/O DATA GV-BCTV2/PCI
    I/O DATA GV-BCTV3/PCI
    KISS TV/FM PCI
    Leadtek Winfast TV 2000
    Leadtek Winfast TV 2000 XP
    Miro PC TV
    MMAC Osprey
    NEC PK-UG-X017
    STB TV PCI Television Tuner
    Terratec TerraTVplus
    Video Highway XTreme
    VideoLogic Captivator PCI
    Zoltrix TV and Genie TV/FM

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.

VIDEO CAPTURE INTERFACE
The video capture interface to bktr is accessed through /dev/bktrN devices. The following ioctl(2) commands are supported on the Brooktree848 video capture interface:

METEORSFMT unsigned long *
    This command sets the video format, also sometimes referred to as the video norm. The supported formats are:

    METEOR_FMT_NTSC
        NTSC
    METEOR_FMT_PAL
        PAL
    METEOR_FMT_SECAM
        SECAM
    METEOR_FMT_AUTOMODE
        hardware default

METEORGFMT unsigned long *
    This command retrieves the current video format to the unsigned long * argument.

METEORSETGEO struct meteor_geomet *
    This command sets the video properties that affect the bit size of a frame through the meteor_geomet * argument.

        struct meteor_geomet {
        	u_short		rows;	 /* height in pixels*/
        	u_short		columns; /* width in pixels */
        	u_short		frames;
        	u_long		oformat;
        }

    The frames field is the number of frames to buffer. Currently only 1 frame is supported for most operations.

    The oformat field is a bit-field describing the output pixel format type and which video fields to capture. The following are supported pixel format types:

    METEOR_GEO_RGB16
        16-bit RGB
    METEOR_GEO_RGB24
        24-bit RGB in 32 bits
    METEOR_GEO_YUV_PACKED
        16-bit 4:2:2 YUV
    METEOR_GEO_YUV_PLANAR
        16-bit 4:2:2 YUV
    METEOR_GEO_YUV_UNSIGNED
        unsigned UV
    METEOR_GEO_YUV_422
    METEOR_GEO_YUV_12
    METEOR_GEO_YUV_9

    The following are supported field capture modes:

    METEOR_GEO_ODD_ONLY
        only odd fields
    METEOR_GEO_EVEN_ONLY
        only even fields

    By default, frames will consist of both the odd and even fields.

METEORGSUPPIXFMT struct meteor_pixfmt *
    This command is used iteratively to fetch descriptions of supported output pixel formats into the meteor_pixfmt * argument.

        struct meteor_pixfmt {
        	u_int          index;
        	METEOR_PIXTYPE type;
        	u_int          Bpp;		/* bytes per pixel */
        	u_long         masks[3];	/* YUV bit masks */
        	unsigned       swap_bytes :1;
        	unsigned       swap_shorts:1;
        };

    To query all the supported formats, start with an index field of 0 and continue with successive encodings (1, 2, ...) until the command returns an error.

METEORSACTPIXFMT int *
    This command sets the active pixel format. The int * argument is the index of the pixel format as returned by METEORGSUPPIXFMT.

METEORGACTPIXFMT int *
    This command fetches the active pixel format index into the int * argument.

METEORSINPUT unsigned long *
    This command sets the input port of the Brooktree848 device. The following are supported input ports:

    METEOR_INPUT_DEV0
        composite (RCA)
    METEOR_INPUT_DEV1
        tuner
    METEOR_INPUT_DEV2
        composite S-video
    METEOR_INPUT_DEV3
        mystery device
    METEOR_INPUT_DEV_RGB
        rgb meteor
    METEOR_INPUT_DEV_SVIDEO
        S-Video

    Not all devices built with Brooktree848 chips support the full list of input ports.

METEORGINPUT unsigned long *
    This command retrieves the current input port to the unsigned long * argument.

METEORSFPS unsigned short *
    This command sets the number of frames to grab each second. Valid frame rates are integers from 0 to 30.

METEORGFPS unsigned short *
    This command fetches the number of frames to grab each second into the unsigned short * argument.

METEORCAPTUR int *
    This command controls capturing of video data. The following are valid arguments:

    METEOR_CAP_SINGLE
        capture one frame
    METEOR_CAP_CONTINOUS
        continuously capture
    METEOR_CAP_STOP_CONT
        stop continuous capture

METEORSSIGNAL unsigned int *
    This command controls the signal emission properties of bktr. If the unsigned int * argument is a valid signal, then that signal will be emitted when either a frame or field capture has completed. To select between frame or field signalling, the following arguments are used:

    METEOR_SIG_FRAME
        signal every frame
    METEOR_SIG_FIELD
        signal every field

    By default, signals will be generated for every frame. Generation of signals is terminated with the METEOR_SIG_MODE_MASK argument.

TUNER INTERFACE
Most cards supported by this driver feature a hardware television tuner on the I2C bus. The tuner interface to bktr is accessed through /dev/tunerN devices. The following ioctl(2) commands are supported on the tuner interface:

TVTUNER_SETTYPE unsigned int *
    This command sets the tuner's TV channel set, also sometimes called the TV channel band. This setting is used to calculate the proper tuning frequencies. The desired channel set must be selected before attempting to set the tuner channel or frequency. The following is a list of valid channel sets:

    CHNLSET_NABCST
        North America broadcast
    CHNLSET_CABLEIRC
        North America IRC cable
    CHNLSET_CABLEHRC
        North America HRC cable
    CHNLSET_WEUROPE
        Western Europe
    CHNLSET_JPNBCST
        Japan broadcast
    CHNLSET_JPNCABLE
        Japan cable
    CHNLSET_XUSSR
        Russia
    CHNLSET_AUSTRALIA
        Australia
    CHNLSET_FRANCE
        France

TVTUNER_GETTYPE unsigned int *
    This command fetches the tuner's current channel set to the unsigned int * argument.

TVTUNER_SETCHNL unsigned int *
    This command sets the tuner's frequency to a specified channel in the current channel set.

TVTUNER_GETCHNL unsigned int *
    This command fetches the last selected channel. Note that it is not necessarily the current channel. In particular, changing the tuner's frequency by a command other than TVTUNER_SETCHNL will not update this setting, and it defaults to 0 on driver initialization.

TVTUNER_SETFREQ unsigned int *
    This command sets the tuner's frequency to 1/16th the value of the unsigned int * argument, in MHz. Note that the current channelset is used to determine frequency offsets when this command is executed.

TVTUNER_GETFREQ unsigned int *
    This command fetches the tuner's current frequency to the unsigned int * argument. Note that this value is 16 times the actual tuner frequency, in MHz.

BT848_SAUDIO int *
    This command controls the audio input port and mute state. The following is a list of valid arguments:

    AUDIO_TUNER
        tuner audio port
    AUDIO_EXTERN
        external audio port
    AUDIO_INTERN
        internal audio port
    AUDIO_MUTE
        mute audio
    AUDIO_UNMUTE
        unmute audio

BT848_GAUDIO int *
    This command fetches the audio input and mute state bits to the int * argument.

KERNEL OPTIONS
The following kernel configuration options are available:

option BKTR_ALLOC_PAGES=nnn
    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.

option BKTR_SYSTEM_DEFAULT="(BROOKTREE_PAL | 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.

option BKTR_OVERRIDE_CARD=nnn
    Select a specific card (overrides autodetection). `nnn' is set to one of the names listed and explained below.

    CARD_ASKEY_DYNALINK_MAGIC_TVIEW
        Askey/Dynalink Magic TView
    CARD_AVER_MEDIA
        AverMedia
    CARD_FLYVIDEO
        Animation Technologies FlyVideo
    CARD_AOPEN_VA1000
        AOpen VA1000
    CARD_TVWONDER
        ATI TV-Wonder/VE
    CARD_HAUPPAUGE
        Hauppauge Wincast TV and WinTV
    CARD_IMS_TURBO
        IMS TV Turbo
    CARD_INTEL
        Intel Smart Video Recorder III
    CARD_IO_GV
        I/O DATA GV-BCTV2/PCI
    CARD_IO_BCTV3
        I/O DATA GV-BCTV3/PCI
    CARD_KISS
        KISS TV/FM PCI
    CARD_LEADTEK
        Leadtek Winfast TV 2000
    CARD_LEADTEK_XP
        Leadtek Winfast TV 2000 XP
    CARD_MIRO
        Miro PC TV
    CARD_OSPREY
        MMAC Osprey
    CARD_NEC_PK
        NEC PK-UG-X017
    CARD_STB
        STB TV PCI Television Tuner
    CARD_TERRATVPLUS
        Terratec TerraTVplus
    CARD_VIDEO_HIGHWAY_XTREME
        Video Highway XTreme
    CARD_ZOLTRIX
        Zoltrix TV
    CARD_ZOLTRIX_GENIE_FM
        Zoltrix Genie TV/FM

option BKTR_OVERRIDE_MSP=n
    Specifies whether the MSP3400C chip is present (overrides autodetection).

option BKTR_OVERRIDE_TUNER=nnn
    Select a specific tuner (overrides autodetection). `nnn' is set to one of the names listed and explained below.

    TEMIC_NTSC
        Temic 4032FY5
    TEMIC_PAL
        Temic 4002FH5
    TEMIC_SECAM
        Temic 4002FN5
    PHILIPS_NTSC
        Philips FI1236
    PHILIPS_PAL
        Philips FM1216
    PHILIPS_SECAM
        Philips FI1216MF
    TEMIC_PALI
        Temic 4062FY5
    PHILIPS_PALI
        Philips FI1246
    PHILIPS_FR1236_NTSC
        Philips FR1236 MK2
    PHILIPS_FR1216_PAL
        Philips FM1216
    PHILIPS_FR1236_SECAM
        Philips FM1216MF
    ALPS_TSCH5
        Alps TSCH5 NTSC
    ALPS_TSBH1
        Alps TSBH1 NTSC
    TIVISION_TVF5533
        Tivision TVF5533-MF NTSC

SEE ALSO
intro(4), pci(4), radio(4)

HISTORY
The bktr driver first appeared in FreeBSD 2.2.

AUTHORS
-nosplit The bktr 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.

CAVEATS
On big-endian architectures it is not possible to program the card to perform proper byte swapping in 24 bit modes, therefore only 16 and 32 bit modes are supported.