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-
- First of all, I have been in contact with Michael Hipp
- and received his permission to include mpg123 as a part of
- CL-Amp! However, I decided to make a plugin of it and will
- release that as open source in a near future...
-
- Best regards /Claes Löfqvist
-
- -----------------------------------------------------------------
-
-
-
- Here is the text from the file COPYING from Michael:
- ----------------------
- Copyright (c) 1995-98 by Michael Hipp, all rights reserved.
- Parts of the software are contributed by other people, please
- refer to the README file for details!
-
- DISTRIBUTION:
- This software may be distributed freely, provided that it is
- distributed in its entirety, without modifications, and with
- the original copyright notice and license included. You may
- distribute your own seperate patches together with this software
- package. The software may not be sold for profit or as "hidden"
- part of another software, but it may be included with collections
- of other free software, such as CD-ROM images of FTP servers and
- similar, provided that this software is not a significant part
- of that collection.
- Precompiled binaries of this software may be distributed in the
- same way, provided that this copyright notice and license is
- included without modification.
-
- USAGE:
- This software may be used freely, provided that the original
- author is always credited. If you intend to use this software
- as a significant part of business (for-profit) activities, you
- have to contact the author first. Also, any usage that is not
- covered by this license requires the explicit permission of
- the author.
-
- DISCLAIMER:
- This software is provided as-is. The author can not be held
- liable for any damage that might arise from the use of this
- software. Use it at your own risk.
-
-
- Here is the text from the file README from Michael:
- (It is the Q version!, even if the README is mentioning N version)
- ----------------------
- **********************************************************************
- * MPEG 1.0/2.0 _AUDIO_ PLAYER, V0.59n *
- * *
- * (full?) MPEG 1.0/2.0, Layer 1,2 and 3 support *
- * Layer-3 realtime only with a 'fast' machine *
- * Since April 97, 128kbit j-stereo should work on a 486DX4-120. *
- * With 2:1 down-sampling or using the downmix-mode even a 486DX2-66 *
- * should play such a stream in realtime! *
- * *
- * I still claim to have the fastest MPEG Audio Player for UNIX ;) *
- **********************************************************************
-
- Please read first the important information in the COPYING file.
-
- written/modfied by:
- Michael Hipp (email: Michael.Hipp@student.uni-tuebingen.de)
- Oliver Fromme <oliver.fromme@heim3.tu-clausthal.de>
- (several enhancements, man pages, Makefile, FreeBSD port, License, etc.)
-
- Uses code (or at least ideas) from:
- MPEG Software Simulation Group: reference decoder package
- Tobias Bading: idea for DCT64 in subband synthesis from maplay package
- Jeff Tsay and Mikko Tommila: MDCT36 from maplay package
- Philipp Knirsch <phil@mpik-tueb.mpg.de>: DCT36/manual unroll idea
- Thomas Woerner <..> (SGI Audio)
- Damien Clermonte <..> (HP-UX audio fixes)
- Niclas Lindstrom <nil@wineasy.se>: OS2 port
- Stefan Bieschewski <stb@acm.org>: Pentium optimizations, decode_i586.s
- Martin Denn <mdenn@unix-ag.uni-kl.de>: NAS port
- Niklas Beisert <nbeisert@physik.tu-muenchen.de> MPEG 2.5 tables
- <mycroft@NetBSD.ORG> and <augustss@cs.chalmers.se>: NetBSD
- Kevin Brintnall <kbrint@visi.com> BSD patch
- Tony Million: win32 port
- Steven Tiger Lang: advanced shuffle
- Henrik P Johnson: HTTP auth patch
- Eric B. Mitchell: esd port
- and more ....
-
- current distribution site for new test versions is:
- http://www-ti.informatik.uni-tuebingen.de/~hippm/mpg123.html
-
- here's Oliver Fromme's mpg123 page:
- http://mpg.123.org/
- (includes information about the mpg123 mailing list)
-
- and you can get the latest release from here:
- ftp.tu-clausthal.de:/pub/unix/audio/mpg123
- http://ftp.tu-clausthal.de/pub/unix/audio/mpg123
-
- ------------------------------------------------------------------------
-
- This version plays a layer3,112Kbit/s,J-Stereo stream on my AMD 5x86/133Mhz
- with about 66% CPU load. (on the console, NO X11)
- If your machine isn't fast enough you may try the downsampling
- feature (--2to1 and --4to1 options)
- Playing in '--singlemix' (stero reduced to mono) also saves some
- CPU cycles, though the whole code is optimized for 'full' stereo playing.
-
- 'Benchmarks': (+/- 2%)
- ----------------------
- (AMD 486/133MHZ,ASUS SP3G,256KB cache,DIRTY-TAG installed,(BusLogic SCSI))
- (Layer3, 112Kbit/s, Joint-Stereo stream (partially MS stereo, no I-stereo))
- (Compiled with: -DI386_ASSEM -DREAL_IS_FLOAT -DLINUX -Wall -O2 -m486
- -fomit-frame-pointer -funroll-all-loops -finline-functions -ffast-math)
-
- full quality: (stero) 66% (-> may work on 486DX4-100)
- (singlemix) 38% (-> should work on 486DX2-66)
- 2:1 downsampling: (stereo) 48%
- (singlemix) 30% (-> should work on 486DX-50)
-
- ---------------------------------------------------------------------
- Description:
-
- This isn't a new player. It's a near fully rewritten version based on the
- mpegaudio (FHG-version) package. The DCT algorithm in the
- synthesis filter is a rewritten version of the DCT first seen in the maplay
- package, which was written by Tobias Bading (bading@cs.tu-berlin.de). The
- rewrite was neccassary, because the GPL may not allow this copyright mix.
- The mpegaudio package was written by various people from the MPEG/audio
- software simulation group. The maplay is under GPL .. You can find the
- original source code and the mpegaudio package on: ftp.tnt.uni-hannover.de.
-
- Especially layer3.c common.c and mpg123.h is based on the dist10 package.
- The code is fullly rewritten but I'm using sometimes the
- same variable names or similar function names as in the
- original package.
-
- In the current layer3.c I'm using a DCT36 from Jeff Tsay's
- (ctsay@pasteur.eecs.berkeley.edu) maplay 1.2+ package. His code is
- under GPL .. I also tried the enhancement from Mikko Tommila. His
- code is also in layer3.c (but it's disabled at the moment, because
- it was slightly slower than the unrolled 9 point DCT (at least on
- _my_ system)). Theoretically it should be faster. You may try it on
- your system.
-
- The output can converted to different audio formats and
- rates. Currently, only (very simple) audiosupport for
- the most common computer systems. It's possible
- to build a 'generic' version which needs an external
- audio player for playing.
-
- I have tested the program with a lot of teststreams, but it's very
- likely, that there are still a few bugs.
-
- NAS notes: (from Martin Denn)
- -----------------------------
- you may wanna play with the following defines: (from audio.c)
- NAS_SOUND_PORT_DURATION
- NAS_SOUND_LOW_WATER_MARK
- Change them to optimize the player for your environment. For slow
- networks a proven config is:
- #define NAS_SOUND_PORT_DURATION 10 /* seconds */
- #define NAS_SOUND_LOW_WATER_MARK 75 /* percent */
-
- Pentium optimization notes:
- ---------------------------
- The ASM optimaztions are especially for Intel Pentium FPUs.
- On other processorts the egcs compiler optimiazation
- may do a better job.
-
- 3DNow notes:
- ------------
- You need a new 'as'. ie. the 'as' from binutils-2.9.1.0.19a
-
-
- have fun,
- Mike
-
- ----------------------------------------------------------------------------
-
- Just for info:
- I'm also working (but not at the moment) on a DSP port for this package.
- A first testversion of the _LAYER-2_ part is finished and seems
- to work in realtime with my 20MHZ ADSP-2115
-
- ----------------------------------------------------------------------------
-
- Copyrights (c) 1995,1996,1997 of all changes/modifications and
- of the new code by Michael Hipp. All rights reserved.
- Copyrights (c) 1997 of several enhancements by Oliver Fromme.
- See the packages 'maplay 1.2(+)' and 'mpegaudio' for their copy-policies.
- Copyrights (c) 1997 of the OS2 specific parts by Niclas Lindstrom
-
- known bugs:
- -----------
- layer 3 i-stereo not heavily tested
- btw: I'm looking for i-stereo teststreams .. maybe you could send me a few
- Layer 1 not heavily tested
- no CRC checking ..
- no 'free format streams'
- no clean audio interface
- MPEG 2.0, Layer1 and Layer2 not tested (and probably will not work)
- MPEG 2.0, Layer3 not heavily tested .. may has bugs.
-
- related information:
- --------------------
- If you need an mp3 frame re(assembler) and stream debug tool you should
- have a look at the mp3asm program on Olli's mpg123 page.(http://mpg.123.org)
-
-
- ******************************************************************************
- *
- * This is software with ABSOLUTELY NO WARRANTY.
- * Use it at your OWN RISK. It's possible to damage e.g. hardware or your hearing
- * due to a bug or for other reasons.
- *
- * I do not warrant that the program is free of infringement of any third-party
- * patents.
- *
- ******************************************************************************
-
-