PAD(4) FreeBSD Kernel Interfaces Manual PAD(4)
NAME
pad - Pseudo audio device driver
SYNOPSIS
pseudo-device pad
audio* at audiobus?
DESCRIPTION
pad is a pseudo-device driver which provides support for feeding back PCM
data from consumers of an audio(4) device to userland.
The raw PCM data readable from /dev/padN is encoded in stereo little-
endian 16-bit linear PCM at 44100 Hz.
FILES
The pad pseudo-device driver receives data from /dev/audioN and feeds the
raw PCM output to /dev/padN. /dev/audioN is created once /dev/padN is
opened.
/dev/audioN
/dev/padN
EXAMPLES
The following example streams an MP3 to an Apple AirTunes compatible
device:
$ rtunes - < /dev/pad0 &
$ mpg123 -a /dev/audio1 mozart.mp3
Record the output of an application (in this case, audioplay):
$ ffmpeg -f s16le -ar 44100 -ac 2 -i /dev/pad0 output.wav
$ audioplay -d /dev/audio1 input.wav
SEE ALSO
audio(4)
HISTORY
The pad driver appeared in NetBSD 5.0.
AUTHORS
Jared D. McNeill <
[email protected]>
FreeBSD 14.1-RELEASE-p8 February 6, 2021 FreeBSD 14.1-RELEASE-p8