def midiwrite(filename, piano_roll, r=(21, 109), dt=0.2, patch=0):
midi = MidiOutFile(filename)
midi.header(division=100)
midi.start_of_track()
midi.patch_change(channel=0, patch=patch)
t = 0
samples = [i.nonzero()[0] + r[0] for i in piano_roll]
for i in xrange(len(samples)):
for f in samples[i]:
if i==0 or f not in samples[i-1]:
midi.update_time(t)
midi.note_on(channel=0, note=f, velocity=90)
t = 0
t += int(dt*200)
for f in samples[i]:
if i==len(samples)-1 or f not in samples[i+1]:
midi.update_time(t)
midi.note_off(channel=0, note=f, velocity=0)
t = 0
midi.update_time(0)
midi.end_of_track()
midi.eof()
if channel == 0:
print channel, note, velocity, self.abs_time(), self.currTime
self.notes[note] = self.currTime * 1.0
def note_off(self, channel=0, note=0, velocity=0):
if channel == 0:
print "Off with note ", note, " with duration ", self.currTime - self.notes[
note]
self.notes[note] = 0
event_handler = NoteOnPrinter()
in_file = 'test.mid'
out_file = 'test.mid'
midi = MidiOutFile(out_file)
# non optional midi framework
midi.header(division=96)
midi.start_of_track()
# musical events
midi.tempo(60000000 / 60)
midi.update_time(0)
midi.note_on(channel=0, note=69)
midi.update_time(96)
midi.note_on(channel=0, note=73)
midi.update_time(96)
midi.note_off(channel=0, note=69)
midi.update_time(96)
midi.note_off(channel=0, note=73)
def createFile(self, filename):
self.file = MidiOutFile(filename)
self.file.header()
self.file.start_of_track()
