def _build_default_time_sig_tempo():
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(3, Duration(1, 4), 'sww'),
Position(0)))
return ts_seq, tempo_seq
def create_score_1(line, hct, instrument, ts):
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(TimeSignatureEvent(TimeSignature(ts[0], Duration(1, ts[1]), ts[2]), Position(0)))
c = InstrumentCatalog.instance()
instrument = c.get_instrument(instrument)
return LiteScore(line, hct, instrument, tempo_seq, ts_seq)
def test_basic_setup(self):
c = InstrumentCatalog.instance()
violin = c.get_instrument("violin")
# Add notes to the score
vnote0 = Note(DiatonicPitch(4, 'a'), Duration(1, 8))
vnote1 = Note(DiatonicPitch(4, 'b'), Duration(1, 8))
vnote2 = Note(DiatonicPitch(4, 'c'), Duration(1, 8))
vnote3 = Note(DiatonicPitch(4, 'd'), Duration(1, 8))
vnote4 = Note(DiatonicPitch(4, 'e'), Duration(1, 8))
vnote5 = Note(DiatonicPitch(4, 'f'), Duration(1, 8))
# Set up a violin voice with 6 8th notes
vline = Line([vnote0, vnote1, vnote2, vnote3, vnote4, vnote5])
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(3, Duration(1, 4), 'sww'),
Position(0)))
hc_track = HarmonicContextTrack()
diatonic_tonality = Tonality.create(ModalityType.Major,
DiatonicTone("C"))
chord_t = TertianChordTemplate.parse('tIV')
chord = chord_t.create_chord(diatonic_tonality)
hc_track.append(HarmonicContext(diatonic_tonality, chord, Duration(2)))
score = LiteScore(vline, hc_track, violin, tempo_seq, ts_seq)
bp = score.beat_position(Position(0))
print(bp)
assert bp.beat_number == 0
bp = score.beat_position(Position(5, 8))
print(bp)
assert bp.measure_number == 0
assert bp.beat_number == Fraction(5, 2)
assert int(bp.beat_number) == 2
assert bp.beat_number - bp.beat == Fraction(1, 2)
tse = score.time_signature_sequence.floor_event(Position(5, 8))
assert tse is not None
print(tse.object.beat_type(bp.beat))
assert tse.object.beat_type(bp.beat) == BeatType.Weak
assert bp.beat_fraction == Fraction(1, 2)
bp = score.beat_position(Position(1, 16))
print(bp)
tse = score.time_signature_sequence.floor_event(Position(1, 16))
print(tse.object.beat_type(bp.beat))
assert tse.object.beat_type(bp.beat) == BeatType.Strong
def create_score(line_expression, instrument, ts):
lge = LineGrammarExecutor()
source_instance_line, source_instance_hct = lge.parse(line_expression)
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(TimeSignatureEvent(TimeSignature(ts[0], Duration(1, ts[1]), ts[2]), Position(0)))
c = InstrumentCatalog.instance()
instrument = c.get_instrument(instrument)
return LiteScore(source_instance_line, source_instance_hct, instrument, tempo_seq, ts_seq)
def build_simple_constraint(v_note, f, modality_type, key_str, chord_str):
lower_policy_context = TestFitPitchToFunctionConstraint.policy_creator(
modality_type, DiatonicTone(key_str), chord_str, 'C:2', 'C:8')
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(3, Duration(1, 4), 'sww'),
Position(0)))
return FitPitchToFunctionConstraint(v_note, f, tempo_seq,
ts_seq), lower_policy_context
def create_score_artifacts(modality, key_tone, chords, ts):
diatonic_tonality = Tonality.create(
modality, DiatonicToneCache.get_tone(key_tone))
hc_track = TestPitchFitFunction.create_track(chords, diatonic_tonality)
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(ts[0], Duration(1, ts[1]), ts[2]),
Position(0)))
return hc_track, tempo_seq, ts_seq
def create_score(s_notes, modality, key_tone, chords, instrument, ts):
diatonic_tonality = Tonality.create(modality, DiatonicToneCache.get_tone(key_tone))
hc_track = TestTReshape.create_track(chords, diatonic_tonality)
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(TimeSignatureEvent(TimeSignature(ts[0], Duration(1, ts[1]), ts[2]), Position(0)))
c = InstrumentCatalog.instance()
violin = c.get_instrument(instrument)
return LiteScore(TestTReshape.create_line(s_notes), hc_track, violin, tempo_seq, ts_seq)
def create_score(grammar_str, instrument, ts):
lge = LineGrammarExecutor()
target_line, target_hct = lge.parse(grammar_str)
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(ts[0], Duration(1, ts[1]), ts[2]),
Position(0)))
c = InstrumentCatalog.instance()
violin = c.get_instrument(instrument)
return LiteScore(target_line, target_hct, violin, tempo_seq, ts_seq)
def dilate_tempo_sequence(self, tempo_event_sequence):
if tempo_event_sequence is None:
return None
new_tes = TempoEventSequence()
tempi_events = tempo_event_sequence.sequence_list
for tempo_event in tempi_events:
tempo = tempo_event.object
t = Tempo(
tempo.tempo /
self.dilation_factor if self.apply_to_bpm else tempo.tempo,
tempo.beat_duration if not self.apply_to_notes else
tempo.beat_duration * self.dilation_factor)
new_te = TempoEvent(
t, tempo_event.time * self.dilation_factor
if self.apply_to_notes else tempo_event.time)
new_tes.add(new_te)
return new_tes
def build_vst_midi_list():
"""
:return:
"""
c = InstrumentCatalog.instance()
# Add notes to the score
vnote0 = Note(DiatonicPitch(4, 'a'), Duration(1, 8))
vnote1 = Note(DiatonicPitch(4, 'b'), Duration(1, 8))
vnote2 = Note(DiatonicPitch(4, 'c'), Duration(1, 8))
vnote3 = Note(DiatonicPitch(4, 'd'), Duration(1, 8))
vnote4 = Note(DiatonicPitch(4, 'e'), Duration(1, 8))
vnote5 = Note(DiatonicPitch(4, 'f'), Duration(1, 8))
# Set up a violin voice with 6 8th notes
vline = Line([vnote0, vnote1, vnote2, vnote3, vnote4, vnote5])
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(3, Duration(1, 4), 'sww'),
Position(0)))
hc_track = HarmonicContextTrack()
diatonic_tonality = Tonality.create(ModalityType.Major, DiatonicTone("C"))
chord_t = TertianChordTemplate.parse('tIV')
chord = chord_t.create_chord(diatonic_tonality)
hc_track.append(HarmonicContext(diatonic_tonality, chord, Duration(2)))
score = Score()
score.tempo_sequence.add(TempoEvent(Tempo(60), Position(0)))
score.time_signature_sequence.add(
TimeSignatureEvent(TimeSignature(3, Duration(1, 4)), Position(0)))
violin = c.get_instrument("violin")
violin_instrument_voice = InstrumentVoice(violin, 1)
score.add_instrument_voice(violin_instrument_voice)
violin_instrument_voice.voice(0).pin(vline)
return ScoreToVstMidiConverter.convert_score(score, {0: 0}), score
def test_step_wise_tempo(self):
t_lo_steady = Tempo(TempoType.Grave)
event0 = TempoEvent(t_lo_steady, Position(0))
settings = [
Tempo(TempoType.Grave),
Tempo(TempoType.Allegrissimo),
Tempo(TempoType.Moderato),
Tempo(TempoType.Largo),
Tempo(TempoType.Vivace)
]
steps = [(Position(0), settings[0].tempo),
(Position(10), settings[1].tempo),
(Position(20), settings[2].tempo),
(Position(30), settings[3].tempo),
(Position(40), settings[4].tempo)]
f = StepwiseFunction(steps)
event1 = TempoFunctionEvent(f, Position(10))
t_hi_steady = Tempo(TempoType(TempoType.Vivace))
event2 = TempoEvent(t_hi_steady, Position(50))
tes = TempoEventSequence([event0, event1, event2])
assert tes.tempo(Position(0)) == t_lo_steady.tempo
assert tes.tempo(Position(5)) == t_lo_steady.tempo
assert tes.tempo(Position(10)) == settings[0].tempo
assert tes.tempo(Position(20)) == settings[1].tempo
assert tes.tempo(Position(30)) == settings[2].tempo
assert tes.tempo(Position(40)) == settings[3].tempo
assert tes.tempo(Position(50)) == settings[4].tempo
assert tes.tempo(Position(60)) == t_hi_steady.tempo
def test_basic_sequence(self):
settings = [
Tempo(TempoType.Grave),
Tempo(TempoType.Allegrissimo),
Tempo(TempoType.Moderato),
Tempo(TempoType.Largo),
Tempo(TempoType.Vivace),
]
events = [
TempoFunctionEvent(settings[0], Position(0)),
TempoFunctionEvent(settings[1], Position(10)),
TempoFunctionEvent(settings[2], Position(20)),
TempoFunctionEvent(settings[3], Position(40)),
TempoFunctionEvent(settings[4], Position(60))
]
tes = TempoEventSequence(events)
print(tes)
assert tes.tempo(Position(0)) == settings[0].tempo
assert tes.tempo(Position(10)) == settings[1].tempo
assert tes.tempo(Position(20)) == settings[2].tempo
assert tes.tempo(Position(40)) == settings[3].tempo
assert tes.tempo(Position(60)) == settings[4].tempo
assert tes.tempo(Position(15)) == settings[1].tempo
assert tes.tempo(Position(45)) == settings[3].tempo
def get_time_in_ms(self):
event_list = self.score.tempo_sequence.sequence_list
score_len = self.score.length()
fine_tempo_sequence = TempoEventSequence()
for event in event_list:
if isinstance(event, TempoEvent):
fine_tempo_sequence.add(TempoEvent(event.object, event.time))
elif isinstance(event, TempoFunctionEvent):
t1 = event.time
beat_duration = event.beat_duration if event.beat_duration is None else \
ScoreToVstMidiConverter.DEFAULT_BEAT_DURATION
next_event = self.score.tempo_sequence.successor(event)
t2 = next_event.time if next_event is not None else Position(
score_len.duration)
while t1 < t2:
tempo = int(
event.tempo(
t1, next_event.time if next_event is not None else
Position(score_len)))
delta_wnt = (tempo * ScoreToVstMidiConverter.TEMPO_EVENT_DURATION_MS * beat_duration.duration) / \
(60.0 * 1000.0)
fine_tempo_sequence.add(
TempoEvent(Tempo(tempo, beat_duration), t1))
t1 += delta_wnt
conversion = TimeConversion(fine_tempo_sequence,
self.score.time_signature_sequence,
Position(score_len))
actual_time = conversion.position_to_actual_time(
Position(self.score.duration))
return actual_time
def create_score(line_text, instrument, tmpo, ts):
"""
:param line_text:
:param instrument:
:param tmpo: (bpm, tempo beat duration)
:param ts: (num beats, ts beat duration)
:return:
"""
lge = LineGrammarExecutor()
source_instance_line, source_instance_hct = lge.parse(line_text)
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(tmpo[0], tmpo[1]), Position(0)))
ts_seq.add(TimeSignatureEvent(TimeSignature(ts[0], ts[1]), Position(0)))
c = InstrumentCatalog.instance()
instrument = c.get_instrument(instrument)
return LiteScore(source_instance_line, source_instance_hct, instrument,
tempo_seq, ts_seq)
def __init__(self):
"""
Constructor.
"""
self.__instrument_voices = list()
# map from instrument class to the instrument voices added.
self.class_map = dict()
# map instrument class name to InstrumentClass
self.name_class_map = dict()
# HCT not utilized, TODO
self.__hct = HarmonicContextTrack()
self.__tempo_sequence = TempoEventSequence()
self.__time_signature_sequence = TimeSignatureEventSequence()
def __init__(self, coverage_node_list, tempo_seq, ts_seq, hct, line):
"""
Constructor
:param coverage_node_list: List of note structures that are affected by on beat constraints.
:param tempo_seq: TempoEventSequence
:param ts_seq: EventSequence of TimeSignatures
:param hct: HarmonicContextTrack
:param line: Line
"""
self.__coverage_node_list = coverage_node_list
self.__coverage_node_aggregates = dict()
self.__coverage_node_deltas = dict()
# duplicate time signature event sequence
new_ts_list = []
for e in ts_seq.sequence_list:
new_ts_list.append(
TimeSignatureEvent(
TimeSignature(e.object.beats_per_measure,
e.object.beat_duration,
e.object.beat_pattern), e.time))
self.__ts_event_sequence = EventSequence(new_ts_list)
# duplicate tempo event sequence
new_tempo_list = []
for e in tempo_seq.sequence_list:
new_tempo_list.append(
TempoEvent(Tempo(e.object.tempo, e.object.beat_duration),
e.time))
self.__tempo_event_sequence = TempoEventSequence(new_tempo_list)
self.__line = line
self.__hct = HarmonicContextTrack()
for hc in hct.hc_list():
self.__hct.append(
HarmonicContext(hc.tonality, hc.chord, Duration(hc.duration),
Position(hc.position)))
for n in self.coverage_node_list:
self.__coverage_node_aggregates[n] = 0
self.__coverage_node_deltas[n] = 0
def __init__(self,
line,
harmonic_context_track=None,
instrument=None,
tempo_seq=None,
ts_seq=None):
"""
LiteScore constructor.
:param line: Used as the single voice of the score.
:param harmonic_context_track: provides the harmony for the line.
:param instrument: Optionally an Instrument for the line
:param tempo_seq: Optionally, a TempoEventSequence
:param ts_seq: Optionally, a TimeSignatureEventSequence
"""
self.__line = line
self.__hct = HarmonicContextTrack(
) if harmonic_context_track is None else harmonic_context_track
self.__instrument = instrument
self.__tempo_sequence = tempo_seq if tempo_seq is not None else TempoEventSequence(
)
self.__time_signature_sequence = ts_seq if ts_seq is not None else TimeSignatureEventSequence(
)
def test_simple_setup(self):
print('--- test_simple_setup')
line = Line()
notes = [
Note(DiatonicPitch.parse('a:4'), Duration(1, 4)),
Note(DiatonicPitch.parse('b:4'), Duration(1, 4)),
Note(DiatonicPitch.parse('c:4'), Duration(1, 4)),
Note(DiatonicPitch.parse('d:4'), Duration(1, 4)),
Note(DiatonicPitch.parse('e:4'), Duration(1, 2)),
Note(DiatonicPitch.parse('f:4'), Duration(1, 2)),
]
location = 0
for note in notes:
line.pin(note, Offset(location))
location += note.duration.duration
tempo_seq = TempoEventSequence()
ts_seq = EventSequence()
tempo_seq.add(TempoEvent(Tempo(60, Duration(1, 4)), Position(0)))
ts_seq.add(
TimeSignatureEvent(TimeSignature(3, Duration(1, 4), 'sww'),
Position(0)))
diatonic_tonality = Tonality.create(ModalityType.Major,
DiatonicTone("C"))
chord_t = TertianChordTemplate.parse('tIV')
chord = chord_t.create_chord(diatonic_tonality)
hc_track = HarmonicContextTrack()
hc_track.append(
HarmonicContext(diatonic_tonality, chord, Duration(1, 1)))
hc_track.append(
HarmonicContext(diatonic_tonality, chord, Duration(1, 2)))
hc_track.append(
HarmonicContext(diatonic_tonality, chord, Duration(1, 2)))
c = InstrumentCatalog.instance()
violin = c.get_instrument("violin")
score = LiteScore(line, hc_track, violin, tempo_seq, ts_seq)
constraints = [
OnBeatConstraint(notes[1], BeatType.Strong),
StepSequenceConstraint(notes, [1, 1, 1, -1, -1])
]
solver = MelodicConstraintSolver.create(score, constraints)
cheat = {notes[2]: DiatonicPitch.parse('E:5')}
results = solver.solve(cheat)
assert results is not None
assert results.beat_results is not None
assert results.pitch_results is not None
print(len(results.beat_results))
print(len(results.pitch_results))
assert 1 == len(results.beat_results)
assert 1 == len(results.pitch_results)
new_line = results.apply(next(iter(results.beat_results)),
next(iter(results.pitch_results)))
assert new_line is not None
print(new_line)
all_notes = new_line.get_all_notes()
assert 'C:5' == str(all_notes[0].diatonic_pitch)
assert 'D:5' == str(all_notes[1].diatonic_pitch)
assert 'E:5' == str(all_notes[2].diatonic_pitch)
assert 'F:5' == str(all_notes[3].diatonic_pitch)
assert 'E:5' == str(all_notes[4].diatonic_pitch)
assert 'D:5' == str(all_notes[5].diatonic_pitch)
assert Position(3, 4) == all_notes[1].get_absolute_position()
def test_book_tempo_sequence(self):
print('----- test_book_tempo_sequence -----')
seq = TempoEventSequence()
seq.add(TempoEvent(Tempo(TempoType.Grave), Position(0)))
seq.add(TempoEvent(Tempo(TempoType.Moderato), Position(10)))
seq.add(TempoEvent(Tempo(TempoType.Vivace), Position(25)))
seq.add(TempoEvent(Tempo(TempoType.Largo), Position(50)))
event = seq.first
while event is not None:
print(event)
event = seq.successor(event)
print('----- End test_book_tempo_sequence -----')
def test_accel_decel_sequence(self):
t_low = Tempo(TempoType.Moderato)
event0 = TempoFunctionEvent(t_low, Position(0))
t_hi = Tempo(TempoType.Vivace)
array = [(Position(10), t_low.tempo), (Position(30), t_hi.tempo)]
f = PiecewiseLinearFunction(array)
event1 = TempoFunctionEvent(f, Position(10))
event2 = TempoFunctionEvent(t_hi, Position(40))
tes = TempoEventSequence([event0, event1, event2])
print(tes)
assert tes.tempo(Position(0)) == t_low.tempo
assert tes.tempo(Position(10)) == t_low.tempo
assert tes.tempo(Position(40)) == t_hi.tempo
assert tes.tempo(Position(25)) == (t_low.tempo + t_hi.tempo) / 2.0
assert tes.tempo(
Position(30)) == t_low.tempo + (2 *
(t_hi.tempo - t_low.tempo) / 3.0)
assert tes.tempo(Position(50)) == t_hi.tempo
t_hi = Tempo(TempoType.Vivace)
t_low = Tempo(TempoType.Moderato)
event0 = TempoFunctionEvent(t_hi, Position(0))
array = [(Position(10), t_hi.tempo), (Position(30), t_low.tempo)]
f = PiecewiseLinearFunction(array)
event1 = TempoFunctionEvent(f, Position(10))
event2 = TempoFunctionEvent(t_low, Position(40))
tes = TempoEventSequence([event0, event1, event2])
print(tes)
assert tes.tempo(Position(0)) == t_hi.tempo
assert tes.tempo(Position(10)) == t_hi.tempo
assert tes.tempo(Position(40)) == t_low.tempo
assert tes.tempo(Position(25)) == (t_low.tempo + t_hi.tempo) / 2.0
assert tes.tempo(
Position(30)) == t_hi.tempo - (2 *
(t_hi.tempo - t_low.tempo) / 3.0)
assert tes.tempo(Position(50)) == t_low.tempo
