def test_midi_export_anacrusis(self):
part = score.Part("id")
# 1 div is 1 quarter
part.set_quarter_duration(0, 1)
# 4/4 at t=0
part.add(score.TimeSignature(4, 4), 0)
# ANACRUSIS
# quarter note from t=0 to t=1
part.add(score.Note("c", 4), 0, 1)
# incomplete measure from t=0 to t=1
part.add(score.Measure(), 0, 1)
# whole note from t=1 to t=5
part.add(score.Note("c", 4), 1, 5)
# add missing measures
score.add_measures(part)
# print(part.pretty())
mid = export_and_read(part, anacrusis_behavior="shift")
t = 0
for msg in mid.tracks[0]:
t += msg.time
if msg.type == "note_on":
assert t == 0
break
mid = export_and_read(part, anacrusis_behavior="pad_bar")
t = 0
for msg in mid.tracks[0]:
t += msg.time
if msg.type == "note_on":
assert t == 3, f"Incorrect time of first note on: {t} (should be 3)"
break
def make_measure(xml_measure):
measure = score.Measure()
# try:
# measure.number = int(xml_measure.attrib['number'])
# except:
# LOGGER.warn('No number attribute found for measure')
measure.number = get_value_from_attribute(xml_measure, 'number', int)
return measure
def test_export_import_pprint(self):
# create a part
part1 = score.Part('My Part')
# create contents
divs = 10
ts = score.TimeSignature(3, 4)
page1 = score.Page(1)
system1 = score.System(1)
measure1 = score.Measure(number=1)
note1 = score.Note(step='A', octave=4, voice=1, staff=1)
rest1 = score.Rest(voice=1, staff=1)
note2 = score.Note(step='C', octave=5, alter=-1, voice=2, staff=1)
# and add the contents to the part:
part1.set_quarter_duration(0, divs)
part1.add(ts, 0)
part1.add(measure1, 0, 30)
part1.add(page1, 0)
part1.add(system1, 0)
part1.add(note1, 0, 15)
part1.add(rest1, 15, 30)
part1.add(note2, 0, 30)
score.set_end_times(part1)
# pretty print the part
pstring1 = part1.pretty()
with TemporaryFile() as f:
# save part to musicxml
save_musicxml(part1, f)
f.flush()
f.seek(0)
# load part from musicxml
part2 = load_musicxml(f)
# pretty print saved/loaded part:
pstring2 = part2.pretty()
# test pretty printed strings for equality
equal = pstring1 == pstring2
if not equal:
show_diff(pstring1, pstring2)
msg = 'Exported and imported score does not yield identical pretty printed representations'
self.assertTrue(equal, msg)
def test_times_2(self):
# 6/8 anacrusis
part = score.Part("id")
# 2 divs is 1 quarter
part.set_quarter_duration(0, 2)
part.add(score.TimeSignature(6, 8), 0)
# ANACRUSIS
part.add(score.Note("c", 4), 0, 3)
part.add(score.Measure(), 0, 3)
part.add(score.Note("c", 4), 3, 9)
score.add_measures(part)
time_pairs = [(-3, -1.5), (0, 0), (6, 3)]
test_time_pairs(part, time_pairs)
def test_times_1(self):
# 4/4 anacrusis
part = score.Part("id")
# 1 div is 1 quarter
part.set_quarter_duration(0, 1)
# 4/4 at t=0
part.add(score.TimeSignature(4, 4), 0)
# ANACRUSIS
# quarter note from t=0 to t=1
part.add(score.Note("c", 4), 0, 1)
# incomplete measure from t=0 to t=1
part.add(score.Measure(), 0, 1)
# whole note from t=1 to t=5
part.add(score.Note("c", 4), 1, 5)
# add missing measures
score.add_measures(part)
time_pairs = [(-1, -1), (0, 0), (4, 4)]
test_time_pairs(part, time_pairs)
def part_from_matchfile(mf):
part = score.Part('P1', mf.info('piece'))
# snotes = sorted(mf.snotes, key=attrgetter('OnsetInBeats'))
snotes = sort_snotes(mf.snotes)
divs = np.lcm.reduce(np.unique([note.Offset.denominator * (note.Offset.tuple_div or 1)
for note in snotes]))
part.set_quarter_duration(0, divs)
min_time = snotes[0].OnsetInBeats # sorted by OnsetInBeats
max_time = max(n.OffsetInBeats for n in snotes)
ts = mf.time_signatures
beats_map, beat_type_map, min_time_q, max_time_q = make_timesig_maps(ts, max_time)
bars = np.unique([n.Bar for n in snotes])
t = min_time
t = t * 4 / beat_type_map(min_time_q)
offset = t
# bar map: bar_number-> start in quarters
bar_times = {}
for b0, b1 in iter_current_next(bars, start=0):
bar_times.setdefault(b1, t)
if t < 0:
t = 0
else:
# multiply by diff between consecutive bar numbers
n_bars = b1 - b0
if t <= max_time_q:
t += (n_bars * 4 * beats_map(t)) / beat_type_map(t)
for note in snotes:
# start of bar in quarter units
bar_start = bar_times[note.Bar]
# offset within bar in quarter units
bar_offset = (note.Beat - 1) * 4 / beat_type_map(bar_start)
# offset within beat in quarter units
beat_offset = (4 * note.Offset.numerator
/ (note.Offset.denominator * (note.Offset.tuple_div or 1)))
# # anacrusis
if bar_start < 0:
# in case of anacrusis we set the bar_start to -bar_duration (in
# quarters) so that the below calculation is correct
bar_start = - beats_map(bar_start) * 4 / beat_type_map(bar_start)
# note onset in divs
onset_divs = int(divs * (bar_start + bar_offset + beat_offset - offset))
# print(note.Anchor, onset_divs, bar_start, bar_offset, beat_offset, offset)
articulations = set()
if 'staccato' in note.ScoreAttributesList:
articulations.add('staccato')
if 'accent' in note.ScoreAttributesList:
articulations.add('accent')
# dictionary with keyword args with which the Note (or GraceNote) will be instantiated
note_attributes = dict(step=note.NoteName,
octave=note.Octave,
alter=note.Modifier,
id=note.Anchor,
articulations=articulations)
staff_nr = next((a[-1] for a in note.ScoreAttributesList if a.startswith('staff')), None)
try:
note_attributes['staff'] = int(staff_nr)
except (TypeError, ValueError):
# no staff attribute, or staff attribute does not end with a number
note_attributes['staff'] = None
note_attributes['voice'] = next((int(a) for a in note.ScoreAttributesList
if NUMBER_PAT.match(a)), None)
# get rid of this if as soon as we have a way to iterate over the
# duration components. For now we have to treat the cases simple
# and compound durations separately.
if note.Duration.add_components:
prev_part_note = None
for i, (num, den, tuple_div) in enumerate(note.Duration.add_components):
# when we add multiple notes that are tied, the first note will
# get the original note id, and subsequent notes will get a
# derived note id (by appending, 'a', 'b', 'c',...)
if i > 0:
# tnote_id = 'n{}_{}'.format(note.Anchor, i)
note_attributes['id'] = score.make_tied_note_id(note_attributes['id'])
part_note = score.Note(**note_attributes)
duration_divs = int(divs * 4 * num / (den * (tuple_div or 1)))
assert duration_divs > 0
offset_divs = onset_divs + duration_divs
part.add(part_note, onset_divs, offset_divs)
if prev_part_note:
prev_part_note.tie_next = part_note
part_note.tie_prev = prev_part_note
prev_part_note = part_note
onset_divs = offset_divs
else:
num = note.Duration.numerator
den = note.Duration.denominator
tuple_div = note.Duration.tuple_div
duration_divs = int(divs * 4 * num / (den * (tuple_div or 1)))
offset_divs = onset_divs + duration_divs
# notes with duration 0, are also treated as grace notes, even if
# they do not have a 'grace' score attribute
if ('grace' in note.ScoreAttributesList or
note.Duration.numerator == 0):
part_note = score.GraceNote('appoggiatura', **note_attributes)
else:
part_note = score.Note(**note_attributes)
part.add(part_note, onset_divs, offset_divs)
# add time signatures
for (ts_beat_time, ts_bar, (ts_beats, ts_beat_type)) in ts:
bar_start_divs = int(divs * (bar_times[ts_bar] - offset)) # in quarters
part.add(score.TimeSignature(ts_beats, ts_beat_type), bar_start_divs)
# add key signatures
for (ks_beat_time, ks_bar, keys) in mf.key_signatures:
if len(keys) > 1:
# there are multple equivalent keys, so we check which one is most
# likely according to the key estimator
est_keys = estimate_key(notes_to_notearray(part.notes_tied), return_sorted_keys=True)
idx = [est_keys.index(key) if key in est_keys else np.inf
for key in keys]
key_name = keys[np.argmin(idx)]
else:
key_name = keys[0]
fifths, mode = key_name_to_fifths_mode(key_name)
part.add(score.KeySignature(fifths, mode), 0)
add_staffs(part)
# add_clefs(part)
# add incomplete measure if necessary
if offset < 0:
part.add(score.Measure(number=1), 0, int(-offset * divs))
# add the rest of the measures automatically
score.add_measures(part)
# print(part.pretty())
score.tie_notes(part)
score.find_tuplets(part)
if not all([n.voice for n in part.notes_tied]):
# print('notes without voice detected')
add_voices(part)
return part