On Wednesday 06 August 2003 14:29, Chris Cannam wrote:
>
> Most of the time, it's a big advantage that the metronome is more
> structured (and therefore simpler) than a full segment editor.
OK, good point.
> OK, consider a piece that starts in 4/4 for two bars, then goes
> into a number of alternating bars of 5/8 and 3/4 and finally
> settles down in 6/8 with a closing 4/4 bar. What do you store
> in the composition?
Some kind of map<TimeSig,Segment*>, so I could mmap all of them, tell the
sequencer about it, and then when the sequencer gets a TimeSig event it would
just start playing the right segment.
> Then what do you do with it when the user
> replaces that 6/8 with a 3/4 and switches it to 4/4 a bit sooner?
I wouldn't do anything, it's purely a playback time issue.
> And whatever it is you do, how is that simpler than regenerating
> the whole thing?
It's not, I agree.
> >> See if you're generating a segment, why bother making it a short
> >> repeating one at all? Why not just go from one end of the
> >> composition to the other, filling in notes at all the right times?
> >
> > Isn't that redoing what the sequencer does at playback time ?
>
> The sequencer just plays the notes, it doesn't decide when to
> play them.
OK, disregard my previous statement, I misunderstood what you were meaning.
> I suggest we just have a simple method in the sequence manager
> that creates a segment, shoves the events in it using code
> somewhat like the function I just posted, maps it and then
> throws it away.
I'll try that.
> Or it could get fancy and write the MappedEvents
> straight to the mmapped area without bothering with a segment.
Not sure it would be worth the hassle.
--
Guillaume.
http://www.telegraph-road.org
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