15 Feb
2013
15 Feb
'13
9:17 p.m.
On Friday 15 February 2013 13:19:57 J. Liles wrote:
It means that you have to do that tricky
'sequencing' part, which consists
of scheduling (MIDI) events and only placing them onto the JACK buffer at
the appropriate instant. ALSA MIDI does this for you, as well as providing
a nice API for generating the MIDI events. That's not the trickiest part
though, the real mess begins when you want to deal with the JACK
Transport/Timebase API to follow or generate tempo changes.
So there's no way to tell Jack to deliver the event at time t? You have to
wait for the right frame and then put on the buffer (presumably to appear on
the buffer for the receiver to use the next frame)?
Unless you mean something other than conversions to/from nanoseconds (or
whatever), the tempo stuff doesn't much concern me. That's a straight-forward
number-crunching algorithm. That kind of thing I can do.
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7:8