"...I know your work and I appreciate it, but.... but...
It is a little bit complex for me :-(
I dont understand binaryEncode(etc...)
and also the bridge between Revolution (code) and Midi..."
René,
I know it looks complicated. I think it would take me a while to
figure it out again, even though I commented the scripts fairly heavily!
But once you understand what makes up a MIDI file, which parts are
constant (always the same in every MIDI file of that type), and which
parts are variable (different in each music track), you see that it is
not that complex. If you look at the MIDI format document, you'll see
the various parts described in the order in which they appear.
At least MIDI files are generally not very big, so if you want to open
them up using a Hex editor, you're not scanning a tremendous amount of
data. To that end I would use MIDI Builder to create a MIDI file with
a single note, and then take a look using HexEdit:
http://sourceforge.net/project/showfiles.php?group_id=9366
(there's a French version, too)
Now compare what's in the MIDI format document with what you see in
the HexEdit.
Rev's binaryEncode function is called after all of the various parts
of the data have been set up, as most of the MIDI data cannot be
represented by ascii (it's not printable, for the most part). But the
binaryEncode function is automatic; you just have to give the
function its data and the proper parameters, and Rev does the rest.
Rev makes it easy: You can simply add the successive bytes of encoded
data "after" what's already there. The file can be created in a
fraction of a second and played almost immediately. Rev's QT player
object handles most of the work, you just have to send it data that it
understands.
Hope this helps,
Kurt
further info:
http://crystal.apana.org.au/ghansper/midi_introduction/midi_file_format.html
http://www.harmony-central.com/MIDI/Doc/doc.html
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