Python Midi Package: writing events non-chronologically
Max M
maxm at mxm.dk
Thu Nov 24 08:51:24 EST 2005
tim wrote:
> Someone using Python Midi Package from
> http://www.mxm.dk/products/public/ lately?
>
> I want to do the following :
> write some note events in a midi file
> then after doing that, put some controllers at the beginning of the
> midifile
> (because I want to be able to make those dependant on what notes were
> just written)
>
> def midctrls():
> global roffset, melchan, roffset, gmt, timedisplay, out_file, midi,
> usednotes, n
> midi.reset_time() #seems to do nothing
> for cha in range(16):
> if cha==1:
> midi.abs_time=0 #seems to do nothing
> midi._relative_time = 0 #seems to do nothing, but I can
> imagine why
> midi._absolute_time = 0 #seems to do nothing
> midi.update_time(new_time=0, relative=0) #although I give
> the variable relative=0 it seems to be relative ?
> midi.continuous_controller(cha, 0, 122)
> (snip)
>
> With this code I want a controller number 0 with value 122 to be written
> at the beginning of my midifile.
> It is written at the end, how I move the writing position to the beginning?
>
You should make a wrapper around the library that handles the midi
events in a data structure.
When your musical structure is then is complete, you use the midi
library to write it to disk.
I have attached a simple example here.
--
hilsen/regards Max M, Denmark
http://www.mxm.dk/
IT's Mad Science
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