GEISS is entirely copyright (c) 1998,1999 by Ryan M. Geiss.
All rights are reserved.


WHAT IS GEISS?
--------------

   GEISS is sound-reactive eye candy for your computer.  It comes in
   two forms: one version is a screensaver for Windows 95/98 and the
   other, a visualization plugin for Winamp.  Geiss uses hand-
   tuned x86 assembly language to reach blazing speeds, generating
   smooth and graceful realtime graphics... and it can hear whatever
   your computer hears and synchronize the graphics it generates to the
   sound you're hearing.  You can hook a microphone, stereo, TV,
   or anything into your sound card... you can also play an audio
   CD in your CD-ROM drive if you have the CD audio cable
   connecting it to your sound card.  Whatever the sound source,
   Geiss will create  a fluid, visual image that matches the
   sounds you're hearing.  



SYSTEM REQUIREMENTS
-------------------
1. Microsoft DirectX 3.0 or later.
2. Microsoft Windows 95/98.  (Should work on NT4 with Service Pack 4.)
3. Pentium-200 or faster processor.  MMX is highly utilized if present.


INSTALLING GEISS
----------------
Simply put the file GEISS.SCR into your Windows directory.  Then go to
the control panel, click 'Display Properties', click the 'Screen savers'
tab, and select "GEISS" from the list of screensavers there.

It's now a good idea to make sure that your computer is ready for
"sound capture."  Go to the start menu, then RUN, then type "SNDVOL32"
and press enter.  This will launch your volume control.  Go to the
menu and select "Options/Properties".  A dialog should pop up - it
should say "Adjust Volume For..." and "Playback" is probably selected.
Instead, select "Recording".  Then make sure all the boxes are checked
in the list below, and hit OK.  You should be back to the volume
control panel.  Now, make sure all the channels (such as CD Audio,
Line-In, Microphone, etc.) are checked (SELECTED), and that the volumes
are from 50% to 80%.  Kill the volume control panel by clicking the 'X'
in the top right, and you're set to go!




***********************************
EXPLANATION OF NEW FEATURES IN 4.00
***********************************

1. PRESETS: these will allow you to save your favorite screens for later
   recall.  Items that are saved include the map #, its random parameters,
   the palette, the waveform, any extra effects that were running, and the
   wave scaling (j/k keys).  

   saving: once you get a screen to look how you want it, you need to
   press 3 keys - the right bracket ']', then the 2-digit number of the
   slot you want to save it in, from 00 to 99.  Use the keys above the 
   letters on your keyboard for this - NOT the numeric keypad.

   loading: hit the left bracket '[' key, then enter the 2-digit code.

   note that these presets are saved in the GEISS.INI file (which is
   in your Windows directory), so you can share them
   with other people if you want to.  The GEISS.INI file will be created
   automatically the first time you save a preset.  (If you're having
   trouble finding it, try 'enabling debug info' from the config panel,
   then running Geiss once.  Look at C:\G_DEBUG.TXT.  In the first few
   lines it will give you the full path & filename to your INI file).

   WARNING: don't mess with the numerical parameters in the file, it's 
   likely to crash your system, and it's your own responsibility.


2. CUSTOM MESSAGES: you can now chuck your favorite sayings up on the 
   screen and watch them fade away.

   To show a custom message while Geiss is running, hit 'M', then enter
   the two-digit code of the message.  For example: to show number 3, 
   type 'M03'.

   However, you first have to program your messages.  You can place
   them in GEISS.INI in the [CUSTOM MESSAGES] section.  GEISS.INI
   can be found in your Windows directory.  If it
   doesn't exist, go ahead and create it.  If the [CUSTOM MESSAGES]
   section does not exist, go ahead and create it too.  It needs to
   look something like this:

        [CUSTOM MESSAGES]
        MESSAGE 0=This is Geiss 4.0
        MESSAGE 1=This program rocks.
        MESSAGE 99= ---  Welcome to Mecca  ---

   ...except you can make the messages say whatever you want.  The
   message numbers range from 0 to 99.  


3. ACCESSING THE NEW MAPS: there are now a total of 16 maps.  You can use
   the keys 0-9 and SHIFT-0 through SHIFT-6 to access them.  If the SHIFT-
   keys don't bring up the new maps (as if 'SHIFT' was broken), then you
   probably need to upgrade to Winamp 2.10.


4. RATING SYSTEM:  Do you have any screens that you just hate?  Or some
   you really, really love?  Wouldn't you like a rating system where
   you could rate each screen, in order to control how frequently it
   gets randomly chosen?  Now you can.

   When you're at the screen you want to rate, use the '<' and '>' keys
   to give it fewer or more 'stars,' respectively.  A screen can have
   anywhere from 0 to 5 stars.  Zero stars means it will never be
   randomly chosen, while 5 means that it will be chosen more often.
   (The formula is simple: the probability that a mode will be chosen
   is equal to that mode's rating, divided by the sum of all the modes'
   ratings.)

   If you give a mode zero stars, then the only way you'll ever see it
   again is by directly selecting it with the numbers at the top of your
   keyboard (or if you load a preset for that screen).






+-------------------------+
|   CONFIGURATION PANEL   |
+-------------------------+

This section describes the function of each control in the configuration panel.


Graphics Options:

  Video Mode - this dropdown box lets you pick what video mode you want to run 
      the screensaver in.  The lowest possible is 320 pixels by 200 pixels 
      (320x200).  The highest possible is 1024x768 for the screensaver and
      640x480 for the plugin.  In addition, you can select the color depth:
      8, 16, or 32-bit.  8-bit mode gives you 256 colors, and you can the color
      palette during the program with the 'p' key.  In 16-bit color, 65000 
      colors are available, but the 'p' key has no effect.  In 32-bit color, 
      16.7 million colors are available.  The hicolor modes (16 and 32-bit)
      are substantially slower because 3 buffers must be processeds (one for 
      each red, green, and blue channel) whereas in 8-bit mode only 1 buffer
      must be processed.  Also, 16-bit mode is further slowed for technical
      reasons (three 8-bit values must be clipped & shifted into one 16-bit
      value for every pixel of every frame).  MMX is used to the highest
      possible extent in all screen functions, bit-chomping, and memory moves.

      The default video mode is 640x480x8.

      Newer video cards will be able to enumerate all their video modes, so
      everything on the list is a video mode that will work for you.  Older
      video cards don't have this capability; in this case, ALL possible video
      modes are listed.  Some will not work.  If you select one and try to
      run the program, and it reverts to the default video mode, then your
      video card can't handle that mode.  Try a different one.


  SLIDERS

  Vertical screen size - this lets you set what percentage of the screen is 
      filled by graphics.  You can set it from 30% to 100%.  A setting near 
      50% or 60% creates a nice letterbox effect.  The entire width of the 
      screen is always used; this just sets the vertical size.  Higher settings
      are proportionally slower.

  Frames between screen changes - this lets you set how many frames will display
      between map (screen) changes.  While you watch one map or screen in the 
      program, the next one is being generated in the background, and when it
      is finished, it immediately takes effect (unless you lock the screen with
      the 'L' key).  A lower setting will make the program slightly slower because
      larger chunks of the map will have to be generated each frame.  A setting of
      about 300-400 is recommended.

  Frame idle delay - set this to 0 (zero) if you want maximum speed out of the
      program.  However, if you like the resolution you're at and the animation
      is too fast, set this to 10 milliseconds or so.  The program will then 
      pause every frame for this many milliseconds and let Windows or Winamp 
      do its processing, and you'll see slower, smoother animation.  After
      getting the screen dimensions & color depth set to your tastes, if you're
      getting more than 30 frames per second, adjust this slider so that you
      only get 30 frames per second.  Trust me - it will look better!

  Use coarse palettes - this lets you set how often a 'coarse palette' is used.
      This only applies to 8-bit color modes.  A 'coarse palette' has a rough
      band in the dark area of the palette; this brightens up the screen and 
      heavily accentuates the dither patterns.  

  Use solar palettes - this lets you set how often a 'solar palette' is used.
      This only applies to 8-bit color modes.  A 'solar palette' has soft, 
      repeating bands of color in it.  The non-monotone nature of these palettes
      is their sale point.

  8-bit gamma correction - if the screen is too dark for you, crank this up.
      This only applies to 8-bit color modes.

  Default wave scaling - you can use the j/k keys during the program to scale
      the amplitude of the sound waves down & up, respectively.  If you always
      find yourself scaling them to a certain size every time you start the
      program, you can adjust this slider so that they start there automatically.
      However, it is highly recommended you adjust Windows' volumes (for the
      screensaver) or Winamp's volume (for the plugin) before doing this.  
      These volumes should always be set to 50% (halfway) for optimal results.


Sound Options:
  
  Sound input device - in the screensaver, this lets you select what sound card 
      or sound device to use for sound capture.  This has no effect for the plugin
      (Winamp provides sound input).

  Sound enabled - this only applies to the screensaver.  When checked, sound is
      turned on.  When unchecked, the screensaver runs without any sound 
      synchronization.  As such, it is slightly faster, but boring and dull in
      comparison.

  Suppress 'press h for help' message - every time you move the mouse, the 
      program pops up a message that says something like 'press h for help - 
      ESC/click to exit'.  If this bugs you, use this checkbox to turn it
      off.

  Disable CD-ROM drive controls - try this if you have problems with Geiss
      and the control of your CD-ROM drive.

  Auto-start CD - if enabled, whenever Geiss is started, it will try to
      auto-play an audio cd (if present) in your CD-ROM drive.

  Generate debug info in c:\g_debug.txt - if you're having problems or think you've
      found a bug, enable this checkbox and run the program until the bug occurs.
      Then e-mail the file c:\g_debug.txt to me, along with a description
      of the bug.  Helpful information to include is your operating system, 
      version, Winamp version (if using the plugin), machine speed, RAM, how 
      many and what other programs were open, version of DirectX, whether or not
      the problem happens every time, etc.




TIPS
----
1. You should try all the video modes to see which one looks and runs
    best on your system; there are vast differences between them, in
    image quality, speed, and color depth.  8-bit color modes are
    recommended for their superior speed/efficiency.
2. You can run the GEISS screensaver like a normal application by putting 
    a copy of it on your desktop... just double-click it to run it.
3. For the screensaver, it is very important that volume levels be set 
    correctly. In Windows' volume control panel, set the input volume for 
    your microphone, line-in, and cd audio to about 1/2.  This should make 
    the wave brightness and amplitude optimal.
4. If you really want to squeeze out a higher frame rate, minimize
    other applications before running Geiss.
5. 'GEISS' rhymes with 'ice'.  It starts with a hard 'g' sound, as in
    'gastrocnemius'.
6. Don't miss the help screen - press 'h' to turn it on/off at any
    time.








UPDATE INFORMATION
------------------
web:         http://www.cis.ohio-state.edu/~geiss/geiss.html

The web site will always have the most up-to-date version
of Geiss available for download.  It also hosts installation
instructions and up-to-date troubleshooting tips for both
the plugin and screensaver.  



TERMS OF USE / COPYRIGHT INFORMATION / PUBLIC DISPLAY
-----------------------------------------------------
Geiss is 100 percent free for personal use.  No registration is required.
Any commercial use of this program, however, requires the consent of the
author.  For large ventures this will involve a licensing fee.  Be wary
that every image or video sequence generated with this program is the sole
copyright of Ryan M. Geiss and can not be reproduced or displayed in public
without permission.


LICENSE AGREEMENT
-----------------
You may personally use and copy Geiss freely.  However, you may NOT charge
money for distributing Geiss.  Don't try to sell this program - it's free.


DISCLAIMER
----------
The author is not responsible for any damages or loss of data that
occur to your system for using Geiss.  Geiss is distributed freely, and
if you choose to use Geiss, you take all risk on yourself.  If your
system appears to have problems when Geiss is run, you should immediately
discontinue using Geiss.  The author is also not responsible for any
damages to YOU for watching or using Geiss.  If you are epileptic,
have a weak heart, or have any other conditions which might make using
this program dangerous to your health, you should not use this program.


USE PASSWORD FEATURE AT OWN RISK
--------------------------------
Passwords are now supported in version 4.0, but might not be
bulletproof.  It is highly recommended that you do not use Geiss
as your screensaver if you have sensitive or private data on your
machine.  The author is in NO WAY responsible for any loss of or
damage to data due to the failure of passwords related to the use
of Geiss.
				

