pygame.MIDI input (Was: [pygame] Python3 version packaged?)

[Christopher Arndt <chris@xxxxxxxxxxxxx>]

On 21.03.2014 17:44, diliup gabadamudalige wrote:
> I am writing a music software and I need to calculate MIDI note on and
> note off from [...] MIDI input? Can I use the pygame.midi.time() counter to do that?

You could, but I would just use the pygame.event queue to handle all
events in the same fashion. Just make sure you poll MIDI input often
enough (by calling poll/read on your MIDI Input instance) and pass the
received MIDI events to the pygame.event queue via
pygame.midi.midis2events and pygame.event.post.

Of course, MIDI input handling is much easier with a callback API,
because you don't need to poll regularly. Here's a short example of
handling MIDI input with python-rtmidi's callback mechanism:

http://trac.chrisarndt.de/code/browser/projects/python-rtmidi/trunk/tests/test_midiin_callback.py

> (difference between key on and key off time).

This has nothing to do with MIDI. Just use the pygame.event mechanism to
record the key events and when they occur (use time.time() or
pygame.time.get_ticks()) and then calculate the difference.


Chris