Re: Issue 24 in mingus: MIDI loading needs to be better

[min...@googlecode.com]

Comment #3 on issue 24 by iammisc: MIDI loading needs to be better
http://code.google.com/p/mingus/issues/detail?id=24

I looked at the mingus MIDI loading support and realized it had absolutely
zero
support for running status, which is where midi events are chained
together. A
sequencer I'm using uses these for controller change events. I added some
support and
have uploaded a new MidiFileIn.py.

It's not pretty but it works. I haven't been able to find exact
documentation, but I
think controller change events that are specified in running status don't
have time
deltas.

Attachments:
MidiFileIn.py 13.4 KB

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[min...@googlecode.com]

Updates:
Labels: -Milestone-Release0.5 Milestone-Release0.6

Comment #4 on issue 24 by Rhijnauwen: MIDI loading needs to be better
http://code.google.com/p/mingus/issues/detail?id=24

(No comment was entered for this change.)

[min...@googlecode.com]

Comment #5 on issue 24 by gokcen....@gmail.com: MIDI loading needs to
be better
http://code.google.com/p/mingus/issues/detail?id=24

Any plans on committing running status support?

[min...@googlecode.com]

Comment #6 on issue 24 by prolo...@shortcircuit.net.au: MIDI loading needs

to be better
http://code.google.com/p/mingus/issues/detail?id=24

Loading other MIDI files doesn't work for
a variety of reasons. Just bumping this Issue to
get some attention. Tried to load some MIDI files
from: http://www.schristiancollins.com/generaluser.php

[min...@googlecode.com]

Comment #7 on issue 24 by shao...@gmail.com: MIDI loading needs to be better
http://code.google.com/p/mingus/issues/detail?id=24

I too ran into the running status problem. I wish I had come here first,
but alas, I coded up my own "fix" based on Will Ware's midi.py
(http://groups.google.com/groups?hl=en&selm=3C0F67FE.96E7CAE8%40alum.mit.edu)...see
the runningStatus parts.

It is a little smaller than the one posted in comment 3 above. It
addresses the following block in a way that prevents the block from being
hit.
" # I don't know what these events are supposed to do, but I keep finding
them.
# The parser ignores them.
if event_type < 8:
raise FormatError, "Unknown event type %d. Byte %d." % (event_type,
self.bytes_read)
"

While trying to figure out midi in python I ran across this link
(http://www.daniweb.com/software-development/python/code/216979/embed-and-play-midi-music-in-your-code-python)
which contains a midi file (FishPolka.mid) that mingus can not parse (also
attached).

The error is below...
m, bpm = mf.MIDI_to_Composition("FishPolka.mid")
File "/usr/local/lib/python2.7/dist-packages/mingus/midi/MidiFileIn.py",
line 64, in MIDI_to_Composition
header, track_data = self.parse_midi_file(file)
File "/usr/local/lib/python2.7/dist-packages/mingus/midi/MidiFileIn.py",
line 367, in parse_midi_file
events = self.parse_track(f)
File "/usr/local/lib/python2.7/dist-packages/mingus/midi/MidiFileIn.py",
line 257, in parse_track
event, chunk_delta = self.parse_midi_event(fp)
File "/usr/local/lib/python2.7/dist-packages/mingus/midi/MidiFileIn.py",
line 285, in parse_midi_event
raise FormatError, "Unknown event type %d. Byte %d." % (event_type,
self.bytes_read)
mingus.midi.MidiFileIn.FormatError: Unknown event type 4. Byte 123.


Attachments:
MidiFileIn.py 10.9 KB
FishPolka.mid 3.8 KB

[min...@googlecode.com]

Comment #8 on issue 24 by shao...@gmail.com: MIDI loading needs to be better
http://code.google.com/p/mingus/issues/detail?id=24

There was an indent problem with a last minute edit in the version attached
above. Sorry!

Attachments:
MidiFileIn.py 11.1 KB