audioplay(1) - NetBSD Manual Pages

Command:
Section:
Arch:
Collection:
>>>
AUDIOPLAY(1)                NetBSD Reference Manual               AUDIOPLAY(1)


NAME

     audioplay - play audio files


SYNOPSIS

     audioplay [-iqVh] [-v volume] [-b balance] [-p port] [-d device] [-C ctl]
     [-f [-c channels] [-e encoding] [-P precision] [-s sample-rate]] [files
     ...]


DESCRIPTION

     The audioplay program copies the named audiofiles, or the standard input
     if no files are named, to the audio device.  The input files must contain
     a valid audio header, and the encoding must be understood by the underly-
     ing driver.


OPTIONS

     The following options are available:

     -i      If the audio device cannot be opened, exit now rather than wait
             for it.

     -q      Be quiet.

     -V      Be verbose.

     -h      Print a help message.

     -v      Set the volume (gain) to volume.  This value must be between 0
             and 255.

     -b      Set the balance to balance.  This value must be between 0 and 63.

     -p      Set the output port to port.  The valid values of port are
             ``speaker'', ``headphone'' and ``line''.

     -d      Set the audio device to be device.  The default is /dev/audio0.

     -C      Set the audio control device to be ctl.  The default is
             /dev/audioctl0.

     -f      Force playing, even if the format is unknown.  The -f flag can be
             used in addition with the following flags to change the number of
             channels, encoding, precision and sample rate.

     -c      when combined with the -f option, sets the number of channels to
             its argument.

     -e      when combined with the -f option, sets the encoding to its argu-
             ment. Possible values are mulaw, ulaw, alaw, slinear, linear,
             ulinear, adpcm, ADPCM, slinear_le, linear_le, ulinear_le,
             slinear_be, linear_be, ulinear_be, mpeg_l1_stream,
             mpeg_l1_packets, mpeg_l1_system, mpeg_l2_stream, mpeg_l2_packets,
             and mpeg_l2_system.

     -P      when combined with the -f option, sets the precision to its argu-
             ment.  This value must be either 8, 16, 24 or 32.

     -s      when combined with the -f option, sets the sample rate to its ar-
             gument.  This value must be a valid value for the audio device or
             an error will be returned.


ENVIRONMENT

     AUDIOCTLDEVICE  the audio control device to be used.

     AUDIODEVICE     the audio device to be used.


EXAMPLES

     Play a raw dump taken from an audio CD ROM:

           audioplay -f -c 2 -P 16 -s 44100 -e slinear_le filename

     The audioctl(1) program can be used to show the available supported en-
     codings:

           audioctl encodings


NOTES

     audioplay can be used to play Sun/NeXT audio files, and also RIFF WAVE
     audio files.  audioplay can be configured in the ``Netscape'' web browser
     as the program to use when playing audio files.


ERRORS

     If the audio device or the control device can not be opened, and error is
     returned.

     If an invalid parameter is specified, an error is returned.  The set of
     valid values for any audio parameter is specified by the hardware driver.


HISTORY

     The audioplay program was first seen in SunOS 5.  The NetBSD audioplay
     was first made available in NetBSD 1.4.


AUTHOR

     The audioplay program was written by Matthew R. Green <mrg@eter-
     na.com.au>.


SEE ALSO

     audioctl(1), audiorecord(1), audioamd(4), aria(4), audio(4), eap(4),
     eso(4), ess(4), gus(4), guspnp(4), sb(4), sv(4), wss(4), ym(4).

NetBSD                          March 30, 1999                               2