[gmpi] Re: Topic 6: Time representation
- From: "Todor J. Fay" <todor@xxxxxxxxxxxxxx>
- To: <gmpi@xxxxxxxxxxxxx>
- Date: Wed, 30 Apr 2003 13:22:06 -0700
This is an intriguing idea, especially since you can use it to extract
additional context information, like rhythm, key, and more.
> Chris Grigg said:
>
> I'm still thinking about Todor's MIDI processing plug-in case. What
> if -- to take the complete opposite position from the previous
> paragraph for a minute -- we were to say that all event times
> arriving at the plug-in are expressed in linear time -- both musical
> and non-musical events, so the host has to convert musical time to
> linear time before the plug ever sees the event -- but we also
> provide a reference ID in the event structure, which the plug could
> query the host on to get the sequencer's original musical time for
> that event? So in timeslice X I get a MIDI event arriving at sample
> index 18345, with note 37 and velocity 118 and event ID 3773. I
> decide to do something musical with it, so I say mySourceEvent =
> gmpiHost::getSourceEvent( 3773 ), which returns a struct with the
> musical time that I can monkey with and then (somehow) post back into
> the event queue.
>
> Something along these lines could clean up the event times arriving
> at the plug-in, whittling it down to just one time format which would
> be a kind of optimization for process(), but still leave a way to
> access an event's musical time, for those plugs that need to. As
> opposed to the single time union idea.
>
> -- Chris
>
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