BKTR(4) NetBSD Kernel Interfaces 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 rou- tine, 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 Brook- tree848 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 for- mat 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 sup- ported 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 com- pleted. To select between frame or field signalling, the follow- ing arguments are used: METEOR_SIG_FRAME signal every frame METEOR_SIG_FIELD signal every field By default, signals will be generated for every frame. Genera- tion of signals is terminated with the METEOR_SIG_MODE_MASK argu- ment.
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 initial- ization. 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 chan- nelset 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 9.2 August 30, 2011 NetBSD 9.2
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