Updated: 2022/Sep/29
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BKTR(4) Device Drivers Manual BKTR(4)
NAME
bktr - Brooktree 848 compatible TV card driver
SYNOPSIS
bktr* at pci? dev ? function ?
radio* at bktr?
#include <dev/ic/bt8xx.h>
options BKTR_OVERRIDE_CARD=n
options BKTR_OVERRIDE_TUNER=n
options BKTR_OVERRIDE_DBX=n
options BKTR_OVERRIDE_MSP=n
options BKTR_SYSTEM_DEFAULT=n
options BKTR_USE_PLL
options BKTR_GPIO_ACCESS
options BKTR_NO_MSP_RESET
DESCRIPTION
This driver supports video capture (frame grabber) and TV tuner cards
based on the Brooktree Bt848, Bt848A, Bt849A, Bt878, and Bt879 chips.
Note that bktr is not part of the dtv(4) framework.
Supported cards include most cards by AVerMedia, Hauppauge, Leadtek,
Miro, Pinnacle, Pixelview, Terratec, and some other companies, especially
all cards based on the Brooktree Bt848, Bt848A, Bt849A, Bt878, or Bt879
chips. A notable exception are the ATI All-in-Wonder cards.
The following kernel configuration options are available:
options BKTR_OVERRIDE_CARD=n
If the card is not recognized correctly by the auto-detection routine, it
can be overridden by setting this option to the appropriate value. The
following values are allowed:
1 Pinnacle Systems (Miro) TV,
2 Hauppauge WinCast/TV,
3 STB TV/PCI,
4 Intel Smart Video III and Videologic Captivator PCI,
5 IMS TV Turbo,
6 AVerMedia TV/FM,
7 MMAC Osprey,
8 NEC PK-UG-X017,
9 I/O DATA GV-BCTV2/PCI,
10 Animation Technologies FlyVideo,
11 Zoltrix TV,
12 KISS TV/FM PCI,
13 Video Highway Xtreme,
14 Askey/Dynalink Magic TView,
15 Leadtek WinFast TV 2000/VC100,
16 TerraTec TerraTV+, and
17 TerraTec TValue.
options BKTR_OVERRIDE_TUNER=n
If the TV tuner is not recognized correctly by the auto-detection
routine, it can be overridden by setting this option to the appropriate
value. Known values are:
1 Temic NTSC,
2 Temic PAL,
3 Temic SECAM,
4 Philips NTSC,
5 Philips PAL,
6 Philips SECAM,
7 Temic PAL I,
8 Philips PAL I,
9 Philips FR1236 NTSC FM,
10 Philips FR1216 PAL FM,
11 Philips FR1236 SECAM FM,
12 ALPS TSCH5 NTSC FM, and
13 ALPS TSBH1 NTSC.
options BKTR_OVERRIDE_DBX=n
To override detection of the BTSC (dbx) chip, set this to 1 if you have
one, or 0 if not.
options BKTR_OVERRIDE_MSP=n
To override detection of the MSP 34xx chip, set this to 1 if you have
one, or 0 if not.
options BKTR_SYSTEM_DEFAULT=n
If this option is set to BROOKTREE_PAL default to PAL, else to NTSC.
options BKTR_USE_PLL
Default to PLL instead of XTAL.
options BKTR_GPIO_ACCESS
Use ioctl()s for direct GPIO access.
options BKTR_NO_MSP_RESET
Skip the MSP reset. This option is handy if you initialize the MSP audio
in another operating system first and then do a soft reboot.
VIDEO CAPTURE INTERFACE
The video capture interface to bktr is accessed through the /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:
.Pp
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 interactively 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 the
/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.
FILES
/dev/bktr* bktr driver interface device
/dev/tuner* bktr tuner interface device
/dev/vbi* teletext interface device
SEE ALSO
options(4), pci(4), radio(4), pkgsrc/audio/xmradio,
pkgsrc/multimedia/ffmpeg, pkgsrc/multimedia/fxtv
HISTORY
The bktr driver appeared in FreeBSD 2.2 and NetBSD 1.5.
AUTHORS
The bktr driver was originally written by Amancio Hasty for FreeBSD and
is now maintained by Roger Hardiman. NetBSD porting was done by Bernd
Ernesti, Berndt Josef Wulf, Matthias Scheler, and Thomas Klausner.
NetBSD 10.99 August 30, 2011 NetBSD 10.99