.\" $NetBSD: dtv.4,v 1.9 2011/08/30 07:24:01 jruoho Exp $
.\"
.\" Copyright (c) 2011 The NetBSD Foundation, Inc.
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Thomas Klausner.
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.Dd August 30, 2011
.Dt DTV 4
.Os
.Sh NAME
.Nm dtv
.Nd interface for digital television
.Sh SYNOPSIS
.Cd "dtv* at dtvbus?"
.Pp
.In dev/dtv/dtvio.h
.In dev/dtv/dtvio_demux.h
.In dev/dtv/dtvio_frontend.h
.Sh DESCRIPTION
The machine-independent
.Nm
interface provides support for digital television
.Pq Dv DTV .
A subset of the Linux Digital Video Broadcasting
.Pq Dv DVB
.Dv APIs
is supported.
In particular,
.Nm
provides the DVB frontend and demodulator
.Dv APIs .
.Sh SUPPORTED DEVICES
The following machine-independent devices are supported:
.Bl -tag -width "auvitek(4) " -offset indent
.It Xr auvitek 4
Auvitek AU0828-based video capture cards
.It Xr emdtv 4
EM28XX-based DTV cards
.\"
.\" XXX: Uncomment once the stub-pages are actually installed.
.\"
.\" .It Xr coram 4
.\" Hauppauge WinTV-HVR-1250
.\" .It Xr cxdtv 4
.\" Conexant CX2388X-based DTV cards
.El
.Pp
Note that the
.Nm
device drivers are generally only available as kernel modules; see
.Xr module 7
and
.Xr modload 8
for additional details.
Refer to
.Xr dtviic 4
for details about the supported demodulators and tuners.
.Sh FILES
.Bl -tag -width 28n
.It Pa /dev/dvb/adapterN/frontend0
The frontend device, for controlling the tuner and demodulator hardware.
.It Pa /dev/dvb/adapterN/demux0
The demux device, for controlling the hardware filters.
.It Pa /dev/dvb/adapterN/dvr0
Digital video recording device.
.El
.Sh SEE ALSO
.Xr auvitek 4 ,
.Xr dtviic 4 ,
.Xr emdtv 4 ,
.\" coram 4 ,
.\" cxdtv 4 ,
.Xr video 9
.Pp
.Pa pkgsrc/multimedia/dvb-apps ,
.Pa pkgsrc/multimedia/mplayer
.Rs
.%T Linux Media Infrastructure API.
.%T Part II. Linux DVB API
.%D 2011
.%U http://linuxtv.org/downloads/v4l-dvb-apis/dvbapi.html
.Re
.Sh HISTORY
The
.Nm
interface first appeared in
.Nx 6.0 .
.Sh AUTHORS
.An Jared D. McNeill
.Aq jmcneill@invisible.ca