def load_annotations_granularity(annotations_path, granularity):
"""Load annotations at the specified level of granularity
Args:
annotations_path (str): path to a DALI annotation file
granularity (str): one of 'notes', 'words', 'lines', 'paragraphs'
Returns:
NoteData for granularity='notes' or LyricData otherwise
"""
if not os.path.exists(annotations_path):
return None
try:
with gzip.open(annotations_path, 'rb') as f:
output = pickle.load(f)
except Exception as e:
with gzip.open(annotations_path, 'r') as f:
output = pickle.load(f)
text = []
notes = []
begs = []
ends = []
for annot in output.annotations['annot'][granularity]:
notes.append(round(annot['freq'][0], 3))
begs.append(round(annot['time'][0], 3))
ends.append(round(annot['time'][1], 3))
text.append(annot['text'])
if granularity == 'notes':
annotation = utils.NoteData(
np.array([begs, ends]).T, np.array(notes), None)
else:
annotation = utils.LyricData(np.array(begs), np.array(ends),
np.array(text), None)
return annotation
def _load_annotations_granularity(annotations_path, granularity):
if not os.path.exists(annotations_path):
return None
try:
with gzip.open(annotations_path, 'rb') as f:
output = pickle.load(f)
except Exception as e:
with gzip.open(annotations_path, 'r') as f:
output = pickle.load(f)
text = []
notes = []
begs = []
ends = []
for annot in output.annotations['annot'][granularity]:
notes.append(round(annot['freq'][0], 3))
begs.append(round(annot['time'][0], 3))
ends.append(round(annot['time'][1], 3))
text.append(annot['text'])
if granularity == 'notes':
annotation = utils.NoteData(np.array(begs), np.array(ends),
np.array(notes), None)
else:
annotation = utils.LyricData(np.array(begs), np.array(ends),
np.array(text), None)
return annotation
def load_notes(notes_path):
"""Load note data from the annotation files
Args:
notes_path (str): path to notes file
Returns:
NoteData: note annotations
"""
if not os.path.exists(notes_path):
raise IOError("notes_path {} does not exist".format(notes_path))
intervals = []
pitches = []
confidence = []
parsed_notes = np.genfromtxt(notes_path, delimiter=',')
for row in parsed_notes:
intervals.append([row[0], float(row[0]) + float(row[1])])
# Convert midi value to frequency
pitches.append((440 / 32) * (2**((int(row[2]) - 9) / 12)))
confidence.append(1.0)
return utils.NoteData(
np.array(intervals, dtype='float'),
np.array(pitches, dtype='float'),
np.array(confidence, dtype='float'),
)
def _load_note_ann(jams_path, string_num):
"""
Args:
jams_path (str): Path of the jams annotation file
string_num (int), in range(6): Which string to load.
0 is the Low E string, 5 is the high e string.
"""
jam = jams.load(jams_path)
anno_arr = jam.search(namespace='note_midi')
anno = anno_arr.search(data_source=str(string_num))[0]
intervals, values = anno.to_interval_values()
return utils.NoteData(intervals, values, np.ones_like(values))
def load_note_ann(jams_path, string_num):
"""
Args:
jams_path (str): Path of the jams annotation file
string_num (int), in range(6): Which string to load.
0 is the Low E string, 5 is the high e string.
"""
if not os.path.exists(jams_path):
raise IOError("jams_path {} does not exist".format(jams_path))
jam = jams.load(jams_path)
anno_arr = jam.search(namespace="note_midi")
anno = anno_arr.search(data_source=str(string_num))[0]
intervals, values = anno.to_interval_values()
return utils.NoteData(intervals, values, np.ones_like(values))
def _load_note_ann(jams_path, string_num):
'''
Parameters:
-----------
jams_path : str
path of the jams annotation file
string_num : int, in range(6)
Which string to load.
0 being the Low E string, 5 is the high e string.
'''
jam = jams.load(jams_path)
anno_arr = jam.search(namespace='note_midi')
anno = anno_arr.search(data_source=str(string_num))[0]
intervals, values = anno.to_interval_values()
return utils.NoteData(intervals[:, 0], intervals[:, 1], values,
np.ones_like(values))
def load_notes(midi_path, midi=None):
"""Load note data from the midi file.
Args:
midi_path (str): path to midi file
midi (pretty_midi.PrettyMIDI): pre-loaded midi object or None
if None, the midi object is loaded using midi_path
Returns:
note_data (NoteData)
"""
if midi is None:
midi = load_midi(midi_path)
intervals = []
pitches = []
confidence = []
for note in midi.instruments[0].notes:
intervals.append([note.start, note.end])
pitches.append(librosa.midi_to_hz(note.pitch))
confidence.append(note.velocity)
return utils.NoteData(np.array(intervals), np.array(pitches), np.array(confidence))
def test_notes():
note_data_1 = [
(
utils.NoteData(
np.array([[0.0, 0.5, 1.0], [0.5, 1.0, 1.5]]).T,
np.array([1108.731, 1108.731, 1108.731]),
np.array([1, 1, 1]),
),
None,
)
]
note_data_2 = [
(
utils.NoteData(
np.array([[0.0, 0.8, 1.0], [0.5, 1.0, 1.5]]).T,
np.array([1108.731, 1108.731, 1108.731]),
np.array([1, 1, 1]),
),
"notes_2",
)
]
note_data_3 = [
(
utils.NoteData(
np.array([[0.0, 0.5, 1.0], [0.5, 1.0, 1.5]]).T,
np.array([1108.731, 1108.731, 1108.731]),
np.array([1, 1, 1]),
),
"notes_1",
),
(
utils.NoteData(
np.array([[0.0, 0.7, 1.0], [0.7, 1.0, 1.5]]).T,
np.array([1108.731, 1108.731, 1108.731]),
np.array([1, 1, 1]),
),
"notes_2",
),
]
note_data_4 = (
utils.NoteData(
np.array([[0.0, 0.5, 1.0], [0.5, 1.0, 1.5]]).T,
np.array([1108.731, 1108.731, 1108.731]),
np.array([1, 1, 1]),
),
None,
)
note_data_5 = [
[
utils.NoteData(
np.array([[0.0, 0.5, 1.0], [0.5, 1.0, 1.5]]).T,
np.array([1108.731, 1108.731, 1108.731]),
np.array([1, 1, 1]),
),
None,
],
(
utils.NoteData(
np.array([[0.0, 0.8, 1.0], [0.5, 1.0, 1.5]]).T,
np.array([1108.731, 1108.731, 1108.731]),
np.array([1, 1, 1]),
),
"notes_2",
),
]
note_data_6 = [(None, None)]
note_data_7 = [
(
utils.EventData(
np.array([0.2, 0.3]),
np.array([0.3, 0.4]),
np.array(["event A", "event B"]),
),
None,
)
]
jam_1 = jams_utils.jams_converter(note_data=note_data_1)
jam_2 = jams_utils.jams_converter(note_data=note_data_2)
jam_3 = jams_utils.jams_converter(note_data=note_data_3)
jam_6 = jams_utils.jams_converter(note_data=note_data_6)
time, duration, value, confidence = get_jam_data(jam_1, "note_hz", 0)
assert time == [0.0, 0.5, 1.0]
assert duration == [0.5, 0.5, 0.5]
assert value == [1108.731, 1108.731, 1108.731]
assert confidence == [None, None, None]
assert jam_2.annotations[0]["sandbox"]["name"] == "notes_2"
time, duration, value, confidence = get_jam_data(jam_3, "note_hz", 0)
assert time == [0.0, 0.5, 1.0]
assert duration == [0.5, 0.5, 0.5]
assert value == [1108.731, 1108.731, 1108.731]
assert confidence == [None, None, None]
time, duration, value, confidence = get_jam_data(jam_3, "note_hz", 1)
assert time == [0.0, 0.7, 1.0]
assert duration == [0.7, 0.3, 0.5]
assert value == [1108.731, 1108.731, 1108.731]
assert confidence == [None, None, None]
time, duration, value, confidence = get_jam_data(jam_6, "note_hz", 0)
assert time == []
assert duration == []
assert value == []
assert confidence == []
assert type(jam_1) == jams.JAMS
with pytest.raises(TypeError):
jams_utils.jams_converter(note_data=note_data_4)
with pytest.raises(TypeError):
jams_utils.jams_converter(note_data=note_data_5)
with pytest.raises(TypeError):
jams_utils.jams_converter(note_data=note_data_7)