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- Maplay 1.2+ for Win32
-
- Web Site
-
- Last modified: April 20, 1997
- ---------------------------------------------------------------------------
-
- Newest version released: 1.81
-
- Latest News:
-
- The layer III version of maplay 1.2+ for Win32 is now available, including
- the complete source code! It requires at least a Pentium-60 CPU for stereo
- layer III streams. The overall performance of the decoder, for all layers
- has increased. See the file whatsnew.txt for a complete description of the
- changes.
-
- This version should be very portable because I spent a lot of time making
- it so. I also did a minor port to the Win32 console. See the porting
- section for information.
-
- This console version for Win32s is also now available! It should work on
- Windows 3.1 systems with Win32s installed.
-
- Anyone who is interested in purchasing a DLL, let me know.
-
- The layer III decoder of maplay is highly optimized from the original
- public c source, but still is quite CPU intensive. If you are interested in
- making optimizations (and getting a share of the glory) please don't bother
- with the following functions, which I've already gotten optimizations for:
-
- * Bit_Reserve::get_bits()
- * Ibitstream::read_buffer()
-
- Optimizations for any other functions are welcomed. Send them to
- ctsay@pasteur.eecs.berkeley.edu!
-
- What is maplay 1.2?
-
- Maplay 1.2 is a program written for UNIX systems by Tobias Bading. What it
- does is decodes MPEG Audio Layer I and II files, which are factor of 6-12
- times smaller than uncompressed audio (like Windows PCM WAVE, Sun AU, or
- Mac AIFF files). Despite the huge compression, there is no audible signal
- loss! Using MPEG Audio Layer III, you can retain CD-quality sound at
- compression ratios around 1:11 (112 kbit/s). Unfortunately, decoding MPEG
- audio streams is a very CPU intensive process. And until now, there have
- been no fully-featured decoders available for Windows.
-
- What is maplay 1.2+ for Win32?
-
- Thanks to Bading's hard work in maintaining portability in maplay, I was
- able to re-target maplay to run on the Windows 95 and Windows NT operating
- systems. I also added a few features such as WAV playing, pausing,
- stopping, and repeating MPEG audio playback. It took about 4 weeks, since I
- had no prior Windows programming experience. Now after a year of work,
- maplay 1.2+ for Win32 also has support for layer III MPEG-1 audio streams.
-
- What do I need to run maplay 1.2+ for Win32?
-
- Maplay 1.2+ for Win32 requires the following hardware and software to run:
-
- * 486 or higher CPU (Pentium required for stereo playback.)
- * Either the Windows 95 or Windows NT operating system. It will not run
- on Windows 3.1 or lower operating systems, even if you have Win32s.
- However, there is now a console version that should run on Windows 3.1
- with Win32s (someone please confirm this).
- * A 16-bit sound card, and the appropriate driver for Windows. (I have
- reports that 8-bit sound cards such as the SB Pro and SB work as
- well.)
-
- What about the competition?
-
- Ever since maplay 1.2 for Win32 was released, many other MPEG audio
- decoders for Windows have also been released. But I still think maplay 1.2
- for Win32 is still the best! Compare the features in the following table:
-
- Program Layer Layer Layer WAV Bits/sample Sample Stereo
- I II III freq.
-
- XingSound1 ? Yes No Yes 162 22.0 No
- kHz
-
- AMAPLAY ? Yes No No 16 48.0 Yes
- kHz
- Philips 48.0
- mpgplay No Yes No No 16 kHz Yes
-
- ActiveMovie ? Yes No Yes4 16 48.0 Yes
- kHz
-
- WinPlay3 No No Yes No 16 48.0 Yes
- kHz
-
- museArc No Yes Yes No 16 48.0 Yes
- kHz
- maplay for 48.0
- Win32 Yes Yes Yes Yes 16 kHz Yes
-
- Program Seeks Playlists Interface Win3.1 Win95 WinNT Distributed
- As:
- XingSound Yes No OK Yes Yes3 Yes3 Freeware
-
- AMAPLAY Yes No Ugly! No Yes3 Yes3 Shareware
- Philips Yes3 Yes3
- mpgplay No No Good No Freeware
-
- ActiveMovie Yes No Media No Yes Yes Freeware
- Player
- WinPlay3 No Yes Good Yes Yes3 Yes3 Shareware
- museArc Yes Yes OK Yes Yes Yes Shareware
- maplay for
- Win32 Yes Yes Good No Yes Yes Freeware
- 1Freeware version of XingSound. There is a full-featured version, but it is
- not free.
- 2Low precision
- 3Not a native 32-bit program
- 4Through Media Player
-
- I have to admit that WinPlay3 is a great program. Unlike maplay 1.2+ for
- Win32, it has very low CPU utilization, support for MPEG-2 Low Frequency
- Extension files, and the ability to play a file from a URL. maplay 1.2+
- currently has none of these features, but check back here often for
- updates! (But maplay 1.2+ for Win32 does have support for seeks, unlike
- WinPlay3.) Anyway, I don't like Fraunhoffer because they have a monopoly
- over Layer III products. Their encoder and decoder programs are severely
- crippled.
-
- museArc has a 60 second restriction on playback time. The non-hacked
- version of WinPlay3 has a 20 second restriction on playback time.
- Ridiculous!
-
- Should I even consider WinPlay3 at all?
-
- Yes. Maplay 1.2+ for Win32 takes more CPU time to decode stereo layer III
- files than WinPlay3. Also, WinPlay3 has several modes that tradeoff audio
- quality for CPU usage. In general, WinPlay3 requires about 2/3 of the CPU
- time that maplay 1.2+ for Win32 does. So your background tasks will also
- execute faster if you are using WinPlay3. However, WinPlay3 lacks the
- ability to seek within a stream, and the highest playback quality is the
- same as maplay's.
-
- Besides speed, WinPlay3 also decodes MPEG-2 LSF streams which maplay 1.2+
- does not support yet.
-
- What kind of interface does the program have?
-
- Check out the Maplay 1.2+ for Win32 Gallery!
-
- Cool. Where can I get maplay for Win32, and how do I install it?
-
- Maplay for Win32, version 1.81, is available here (on my shell account on
- cory, a Berkeley EECS server) in following four flavors:
- 486 Pentium
- InstallShield Setup mpw181-4.zip mpw181-5.zip
- No Installshield mpw4nois.zip mpw5nois.zip
-
- A few notes on installing:
-
- * The InstallShield Setup takes longer to download but will
- automatically configure everything for you. If you have WinZip, you
- can simply open the archive with WinZip, choose the file "setup.exe"
- and select the menu option Action...Install. If you are having
- difficulties (getting stuck at 42%, etc.), close all of your other
- programs and add the maplay through the Add/Remove Programs icon of
- the Control Panel.
- * The same files are contained in archives that do not contain the
- InstallShield setup. These are for people who are having problems
- using InstallShield, or who are having downloading problems. The
- versions with InstallShield are approximately 878 KB; the ones without
- InstallShield are approximately 270 KB.
- * If you plan to use the version with InstallShield, you should
- uninstall version 1.71 or later of maplay, if you have it, before you
- proceed.
- * All of these archives contain the source code. If you are using the
- InstallShield version and want to copy the source code, choose "Custom
- Setup". The source code is automatically unzipped to a /src
- subdirectory if you have the non-InstallShield version.
- * I have reports that the 486 version runs much faster on non-Intel
- CPU's such as AMD's K5 and Cyrix's 6x86.
-
- The console version, which should run on Windows 3.1 with Win32s, is also
- available here in two flavors:
- 486 Pentium
- mpcon-4.zip mpcon-5.zip
-
- Please see the above note for non-Intel CPU's.
-
- These are the NEWEST versions (1.81), last modified on April 20, 1997. See
- the "whatsnew.txt" file for details on the changes.
-
- How do I use maplay for Win32?
-
- Maplay for Win32 supports command-line playback, so you can associate MP2,
- MP3, or MPG files with maplay in the File Manager of Windows Explorer.
- Actually, this will now be partially done by the installation program, so
- you don't have to do anything yourself. Just select the MP2 (MPEG-1 Layer
- II Audio Stream) or LST (playlist) file in Explorer, and double-click! If
- you want to associate MP3 files to maplay, you will have to do this
- manually. Just delete whatever association you had before, and double-click
- on the MP3 file. Use maplay to open the file from now on.You can also use
- it as a viewer in Netscape. The MIME type is "audio", and the subtype is
- "x-mpeg". Finally, you can use as a stand-alone program, as there is a menu
- item to open files. Feel free to E-mail me if you need further
- instructions.
-
- If you need more powerful playlist abilities, you can use either :
-
- * MP3 Manager, Peter Strnad's playlist creator/launcher.
- * MP3 Jukebox by Niclas Borg.
-
- How much does maplay for Win32 cost?
-
- Nothing. Well, almost nothing. Of course you still have to pay for the
- access time and the long distance charges to download it! I do request that
- you e-mail me and tell me if it worked on your system. Also, your generous
- donations are welcomed but not required. To donate, please send a check or
- money order to:
-
- Jeff Tsay
- 1818 Walnut St. Apt. #3
- Berkeley, CA 94709
-
- I'm an extremely poor college student, so anything I receive will go
- towards my college education.
-
- Are there any bugs in maplay 1.2+ for Win32?
-
- Well, as I said before, I'm new at Windows programming, so I'm sure there
- are. But the following are the only bugs I know about:
-
- * Due to a memory leak in the waveOut functions of Windows 95, the
- allocated memory slowly increases for large files. There is nothing I
- can do about this.
- * Sometimes the shortcut keys don't work. You just have to use the
- mouse.
-
- I'll work on getting rid of these bugs, and if you find any others, please
- e-mail me.
-
- Where can I get MPEG audio files?
-
- Check out my list of MPEG Audio links.
-
- How do encode my own MPEG audio files?
-
- You can use Cool Edit 96 (with the MPEG audio extensions) or AMPEG 4.3,
- which is a DOS program, but considerably faster. (AMPEG now decodes Layer
- III files) Also required is the the source code archive that contains the
- tables. Remember, before WAV files are encoded, they must be saved in
- 16-bit format, with a 32 kHz or above sampling frequency.
-
- How do I port maplay 1.2+ to other platforms?
-
- The source is much more portable, so it should be relatively easy to
- compile for the following platforms:
-
- * IBM AIX
- * Sun SPARC
- * HP-UX
- * Linux
- * SGI Indigo
- * NeXTStep
- * BeBox (although the command-line interface code needs some small
- changes)
-
- Please see my porting notes for information on how to port to these and
- other platforms. So far no one has ported 1.81 to any other platform (as I
- am writing this before the official release!), but I expect that to change
- soon. I'll include a list of ports here, once people send them to me.
-
- ---------------------------------------------------------------------------
-
- Credits
-
- * Original source code by Tobias Bading.
- * Layer III code adopted from the ISO MPEG Audio Subgroup Software
- Simulation Group.
- * Win32 port, interface, and layer III porting and optimizations by Jeff
- Tsay.
- * Additional optimizations/modifications by Conrad Song, Timo Jantunen,
- and and Mikko Tommila. Please see the file credits.txt for the full
- credits.
- * License rights for the original maplay granted by the Free Software
- Foundation, Inc.
- * Borland C++ 5.01 compiler donated by Borland International.
-
- I wish to thank the following donators, whose contributions make developing
- maplay worth the effort:
-
- * Corky Coreson
- * Rich ??? (sorry, I don't remember your last name)
- * Deutsche Welle Radio via Wilfried Solbach
-
- The Future
-
- This MPEG decoder is only for MPEG-1 streams. The ability to decode MPEG-2
- streams with the Low Frequency Extension will be added ASAP. Also a
- playlist creation interface and Netscape plug-in functionality are planned.
-
- The latest version of maplay is very portable, so I am waiting for people
- to port the code to many other operating systems. I'd like to see versions
- for FreeBSD and DOS.
- ---------------------------------------------------------------------------
-
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- Windows 95]
-
- Need more information? Broken links? Comments? Please contact me at
- ctsay@pasteur.eecs.berkeley.edu.
-