def load_track(self, miditrack):
"""
The main method for converting the track data into sound events
Loops sequentially through each event and does the following:
1. Update the current time from the event
2. If the event is a note on event, then create a new note and add it to the track
3. If the event is a note off event, then compute its duration
"""
present_time = 0
on_notes = {}
track = InstrumentTrack()
for event_index in range(0, len(miditrack), 1):
event = miditrack[event_index]
present_time += event.tick
if MidiUtils.is_new_note(event):
note = Note(start_time=present_time, pitch=event.pitch, volume=event.velocity)
on_notes[note.pitch] = note
track.add_note(note)
if MidiUtils.has_note_ended(event):
note = on_notes[event.pitch]
note.duration = present_time - note.start_time
instrument = MidiUtils.get_instrument(miditrack)
if instrument is None:
instrument = instruments.PIANO
self.transcript.add_track(instrument, track)
