video/midi interface programming examples
Kevin Scott
kcscott@cc.gatech.edu (kevin@rcenter.com)

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Before running either demo, make sure a video camera is
pluged in, turned on, and running. Also, start up the %synthpanel

before running %conduct, open the midi file mango.mid
  Synthpanel->Sounds->MIDI Songs->mango.mid
It will automatically start playing when you double-click on
it.  Just stop and reset the midi player.  Next, click the
little "More" right arrow button at the top right of the
Synthpanel window.  This will open up a number of additional
channel sliders.  When you opened the mango.mid file, the
instrument presets will change to include things like
Alto Sax, Steel Drums, Marimba, Seashore.
Next, set the video camera to look straight up to the ceiling
and wave your hands in front of it until you get some 
response in the small video window.  Start playing the midi
file and wave your hands as if you were conducting a band
with different musical sections.  The video window is 
divided into four segments, each controlling one or more
instruments.  If any single instrument is too loud (the 
seashore for example) just reduce its "Expression" value in
the synthpanel - this is a sort of multiplier that tempers
the final output volume of any midi channel.


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Files and executables....

conduct.cpp	- Conduct a simple midi song with various
		  instrument sections

airharp.cpp	- Play an airharp

The background subtraction routines come from the
folks in the CPL lab. (phenix@cc)

Other usefull info:
/usr/share/src/dmedia/midi/simple
/usr/include/dmedia/midi.h