3 # MidiUtils - misc utilities to analyze midi files opened with python-mido
5 # Copyright (C) 2016 Antonio Ospite <ao2@ao2.it>
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 return msg.type == 'note_on' or msg.type == 'note_off'
26 return msg.type == 'note_on' and msg.velocity > 0
30 return ((msg.type == 'note_on' and msg.velocity == 0) or
31 (msg.type == 'note_off'))
34 def check_overlapping_notes(midi_file):
35 previous_note_on = False
37 if is_note_on(msg) and msg.channel == 0:
41 previous_note_on = True
42 elif is_note_off(msg) and msg.channel == 0:
43 previous_note_on = False