def testTransposeUnknownChordSymbol(self):
# Attempt to transpose ChordProgression with unknown chord symbol.
events = ['Cm', 'G7', 'P#13', 'F']
chords = chords_lib.ChordProgression()
chords.from_event_list(events)
with self.assertRaises(chord_symbols_lib.ChordSymbolException):
chords.transpose(transpose_amount=-4)
def testFromQuantizedSequenceWithNoChords(self):
chords = chords_lib.ChordProgression()
chords.from_quantized_sequence(self.quantized_sequence,
start_step=0,
end_step=16)
expected = [NO_CHORD] * 16
self.assertEqual(expected, list(chords))
def testToSequence(self):
# Sequence produced from lead sheet should contain notes from melody
# sequence and chords from chord sequence as text annotations.
melody = melodies_lib.MonophonicMelody()
melody.from_event_list([
NO_EVENT, 1, NO_EVENT, NOTE_OFF, NO_EVENT, 2, 3, NOTE_OFF, NO_EVENT
])
chords = chords_lib.ChordProgression()
chords.from_event_list(
[NO_CHORD, 'A', 'A', 'C#m', 'C#m', 'D', 'B', 'B', 'B'])
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
sequence = lead_sheet.to_sequence(velocity=10,
instrument=1,
sequence_start_time=2,
qpm=60.0)
melody_sequence = melody.to_sequence(velocity=10,
instrument=1,
sequence_start_time=2,
qpm=60.0)
chords_sequence = chords.to_sequence(sequence_start_time=2, qpm=60.0)
self.assertEquals(melody_sequence.ticks_per_quarter,
sequence.ticks_per_quarter)
self.assertProtoEquals(melody_sequence.tempos, sequence.tempos)
self.assertEquals(melody_sequence.total_time, sequence.total_time)
self.assertProtoEquals(melody_sequence.notes, sequence.notes)
self.assertProtoEquals(chords_sequence.text_annotations,
sequence.text_annotations)
def testFromQuantizedSequenceWithCoincidentChords(self):
testing_lib.add_quantized_chords(self.quantized_sequence,
[('Am', 4), ('D7', 8), ('G13', 12),
('Csus', 12)])
chords = chords_lib.ChordProgression()
with self.assertRaises(chords_lib.CoincidentChordsException):
chords.from_quantized_sequence(self.quantized_sequence,
start_step=0,
end_step=16)
def testFromQuantizedSequenceWithinSingleChord(self):
testing_lib.add_quantized_chords(self.quantized_sequence, [('F', 0),
('Gm', 8)])
chords = chords_lib.ChordProgression()
chords.from_quantized_sequence(self.quantized_sequence,
start_step=4,
end_step=6)
expected = ['F'] * 2
self.assertEqual(expected, list(chords))
def testAppendEvent(self):
chords = chords_lib.ChordProgression()
chords.append_event(NO_CHORD)
self.assertListEqual([NO_CHORD], list(chords))
self.assertEqual(0, chords.start_step)
self.assertEqual(1, chords.end_step)
chords.append_event('A-')
self.assertListEqual([NO_CHORD, 'A-'], list(chords))
self.assertEqual(0, chords.start_step)
self.assertEqual(2, chords.end_step)
def testSetLength(self):
# Setting LeadSheet length should agree with setting length on melody and
# chords separately.
melody_events = [60]
melody = melodies_lib.MonophonicMelody()
melody.from_event_list(melody_events, start_step=9)
chord_events = ['C7']
chords = chords_lib.ChordProgression()
chords.from_event_list(chord_events, start_step=9)
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
lead_sheet.set_length(5)
expected_melody = melodies_lib.MonophonicMelody()
expected_melody.from_event_list(melody_events[:], start_step=9)
expected_melody.set_length(5)
expected_chords = chords_lib.ChordProgression()
expected_chords.from_event_list(chord_events[:], start_step=9)
expected_chords.set_length(5)
self.assertEquals(expected_melody, lead_sheet.melody)
self.assertEquals(expected_chords, lead_sheet.chords)
self.assertEquals(9, lead_sheet.start_step)
self.assertEquals(14, lead_sheet.end_step)
def testFromQuantizedSequence(self):
testing_lib.add_quantized_chords(self.quantized_sequence,
[('Am', 4), ('D7', 8), ('G13', 12),
('Csus', 14)])
chords = chords_lib.ChordProgression()
chords.from_quantized_sequence(self.quantized_sequence,
start_step=0,
end_step=16)
expected = [
NO_CHORD, NO_CHORD, NO_CHORD, NO_CHORD, 'Am', 'Am', 'Am', 'Am',
'D7', 'D7', 'D7', 'D7', 'G13', 'G13', 'Csus', 'Csus'
]
self.assertEqual(expected, list(chords))
def testSquash(self):
# LeadSheet squash should agree with melody squash & chords transpose.
melody_events = [
12 * 5, NO_EVENT, 12 * 5 + 2, NOTE_OFF, 12 * 6 + 4, NO_EVENT
]
melody = melodies_lib.MonophonicMelody()
melody.from_event_list(melody_events)
chord_events = ['C', 'Am', 'Dm', 'G', 'C', NO_CHORD]
chords = chords_lib.ChordProgression()
chords.from_event_list(chord_events)
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
lead_sheet.squash(min_note=12 * 5, max_note=12 * 6, transpose_to_key=0)
expected_melody = melodies_lib.MonophonicMelody()
expected_melody.from_event_list(melody_events[:])
transpose_amount = expected_melody.squash(min_note=12 * 5,
max_note=12 * 6,
transpose_to_key=0)
expected_chords = chords_lib.ChordProgression()
expected_chords.from_event_list(chord_events[:])
expected_chords.transpose(transpose_amount=transpose_amount)
self.assertEqual(expected_melody, lead_sheet.melody)
self.assertEqual(expected_chords, lead_sheet.chords)
def testTranspose(self):
# Transpose ChordProgression with basic triads.
events = ['Cm', 'F', 'B-', 'E-']
chords = chords_lib.ChordProgression()
chords.from_event_list(events)
chords.transpose(transpose_amount=7)
expected = ['Gm', 'C', 'F', 'B-']
self.assertEqual(expected, list(chords))
# Transpose ChordProgression with more complex chords.
events = ['Esus2', 'B13', 'A7/B', 'F#dim']
chords = chords_lib.ChordProgression()
chords.from_event_list(events)
chords.transpose(transpose_amount=-2)
expected = ['Dsus2', 'A13', 'G7/A', 'Edim']
self.assertEqual(expected, list(chords))
# Transpose ChordProgression containing NO_CHORD.
events = ['C', 'B-', NO_CHORD, 'F', 'C']
chords = chords_lib.ChordProgression()
chords.from_event_list(events)
chords.transpose(transpose_amount=4)
expected = ['E', 'D', NO_CHORD, 'A', 'E']
self.assertEqual(expected, list(chords))
def testTranspose(self):
# LeadSheet transposition should agree with melody & chords transpositions.
melody_events = [
12 * 5 + 4, NO_EVENT, 12 * 5 + 5, NOTE_OFF, 12 * 6, NO_EVENT
]
melody = melodies_lib.MonophonicMelody()
melody.from_event_list(melody_events)
chord_events = [NO_CHORD, 'C', 'F', 'Dm', 'D', 'G']
chords = chords_lib.ChordProgression()
chords.from_event_list(chord_events)
lead_sheet = lead_sheets_lib.LeadSheet(melody, chords)
lead_sheet.transpose(transpose_amount=-5,
min_note=12 * 5,
max_note=12 * 7)
expected_melody = melodies_lib.MonophonicMelody()
expected_melody.from_event_list(melody_events[:])
expected_melody.transpose(transpose_amount=-5,
min_note=12 * 5,
max_note=12 * 7)
expected_chords = chords_lib.ChordProgression()
expected_chords.from_event_list(chord_events[:])
expected_chords.transpose(transpose_amount=-5)
self.assertEqual(expected_melody, lead_sheet.melody)
self.assertEqual(expected_chords, lead_sheet.chords)
def testToSequence(self):
chords = chords_lib.ChordProgression()
chords.from_event_list(
[NO_CHORD, 'C7', 'C7', 'C7', 'C7', 'Am7b5', 'F6', 'F6', NO_CHORD])
sequence = chords.to_sequence(sequence_start_time=2, qpm=60.0)
self.assertProtoEquals(
'ticks_per_quarter: 96 '
'tempos < qpm: 60.0 > '
'text_annotations < '
' text: "C7" time: 2.25 annotation_type: CHORD_SYMBOL '
'> '
'text_annotations < '
' text: "Am7b5" time: 3.25 annotation_type: CHORD_SYMBOL '
'> '
'text_annotations < '
' text: "F6" time: 3.5 annotation_type: CHORD_SYMBOL '
'> '
'text_annotations < '
' text: "N.C." time: 4.0 annotation_type: CHORD_SYMBOL '
'> ', sequence)