mirror of
https://git.FreeBSD.org/ports.git
synced 2024-11-14 23:46:10 +00:00
809c5e9479
Expect not too much ... but if somebody is very experienced in using these tools, then please feel free to add some ,,flesh´´ to these manpages. Now you have a good starting point. PR: closes PR 1518
95 lines
3.6 KiB
Groff
95 lines
3.6 KiB
Groff
.\" Copyright (c) 1997 Andreas Klemm <andreas@FreeBSD.org>. Neuss.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $Id:$
|
|
.Dd August 17, 1997
|
|
.Dt MPEG_MUSICOUT 1
|
|
.Os FreeBSD
|
|
.Sh NAME
|
|
.Nm mpeg_musicout
|
|
.Nd MPEG/audio Layer 1 and Layer 2 encoder
|
|
.Sh SYNOPSIS
|
|
.Nm mpeg_musicout
|
|
queries for all arguments, or
|
|
.br
|
|
.Nm mpeg_musicout
|
|
.Op Fl A
|
|
.br
|
|
.Op Fl s Ar sb
|
|
.br
|
|
inputBS
|
|
.br
|
|
.Op Ar outPCM
|
|
.br
|
|
.Sh DESCRIPTION
|
|
The encoder and decoder software are configured to output
|
|
the coded audio bitstreams as a string of hexadecimal ascii
|
|
characters. For greater compression efficiency, compile flag,
|
|
BS_FORMAT, in common.h can be switched to configure the bitstream
|
|
reading and writing routines to process raw binary bitstreams.
|
|
.br
|
|
The decoder program has a very crude implementation of bitstream
|
|
synchword detection. It may not be able to correctly decode valid
|
|
bitstreams which have false synchword patterns in the ancillary data
|
|
portion of the bitstream.
|
|
.Sh RESTRICTIONS
|
|
The software implements levels I and II and psychophysical auditory
|
|
models I and II as described in the ISO 3-11171 rev 1 standard.
|
|
There are future plans to implement level III.
|
|
.br
|
|
The input/output audio data may either be headerless raw 16 bit data
|
|
or alternatively an AIFF formatted file (Audio Interchange File Format)
|
|
with certain limitations.
|
|
.br
|
|
For more information on the AIFF format see the postscript file
|
|
/sgi/aiff-c.9.26.91.ps at the anonymous ftp site FTP.SGI.COM
|
|
(192.48.153.1).
|
|
.br
|
|
The AIFF formatted file is a convenient way for storing sampling rate
|
|
of the audio file.
|
|
.br
|
|
The encoder and decoder software are configured to output the coded
|
|
audio bitstreams as a string of hexadecimal ascii characters.
|
|
For greater compression efficiency, compile flag, BS_FORMAT,
|
|
in common.h can be switched to configure the bitstream reading
|
|
and writing routines to process raw binary bitstreams.
|
|
.br
|
|
This software has been run and verified on a large variety of
|
|
computers and operating systems. In particular UNIX, MS_DOS (with
|
|
MicroSoft C version 6), Macintosh, AIX Platform (RS6000) and Convex.
|
|
.Sh OPTIONS
|
|
.Bl -tag -width Ds
|
|
.It Sy -A
|
|
write an AIFF output PCM sound file
|
|
.It Sy -s sb
|
|
resynth only up to this sb (debugging only)
|
|
.It Sy inputBS
|
|
input bit stream of encoded audio
|
|
.It Sy outPCM
|
|
output PCM sound file (dflt inName+.dec)
|
|
.Sh SEE ALSO
|
|
.Xr mpeg_musicin 1
|
|
.Sh HISTORY
|
|
Written by Andreas Klemm, August 17, 1997
|