def testExtractChords(self):
self.quantized_sequence.steps_per_quarter = 1
testing_lib.add_quantized_chords_to_sequence(
self.quantized_sequence, [('C', 2), ('G7', 6), ('F', 8)])
self.quantized_sequence.total_steps = 10
chord_progressions, _ = chords_lib.extract_chords(self.quantized_sequence)
expected = [[NO_CHORD, NO_CHORD, 'C', 'C', 'C', 'C', 'G7', 'G7', 'F', 'F']]
self.assertEqual(expected, [list(chords) for chords in chord_progressions])
def testExtractChords(self):
testing_lib.add_chords_to_sequence(
self.note_sequence, [('C', 2), ('G7', 6), ('F', 8)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
quantized_sequence.total_quantized_steps = 10
chord_progressions, _ = chords_lib.extract_chords(quantized_sequence)
expected = [[NO_CHORD, NO_CHORD, 'C', 'C', 'C', 'C', 'G7', 'G7', 'F', 'F']]
self.assertEqual(expected, [list(chords) for chords in chord_progressions])
def testExtractChordsAllTranspositions(self):
self.quantized_sequence.steps_per_quarter = 1
testing_lib.add_quantized_chords_to_sequence(
self.quantized_sequence, [('C', 1)])
self.quantized_sequence.total_steps = 2
chord_progressions, _ = chords_lib.extract_chords(self.quantized_sequence,
all_transpositions=True)
expected = zip([NO_CHORD] * 12, ['G-', 'G', 'A-', 'A', 'B-', 'B',
'C', 'D-', 'D', 'E-', 'E', 'F'])
self.assertEqual(expected, [tuple(chords) for chords in chord_progressions])
def testExtractChordsAllTranspositions(self):
testing_lib.add_chords_to_sequence(
self.note_sequence, [('C', 1)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
quantized_sequence.total_quantized_steps = 2
chord_progressions, _ = chords_lib.extract_chords(quantized_sequence,
all_transpositions=True)
expected = list(zip([NO_CHORD] * 12, ['Gb', 'G', 'Ab', 'A', 'Bb', 'B',
'C', 'Db', 'D', 'Eb', 'E', 'F']))
self.assertEqual(expected, [tuple(chords) for chords in chord_progressions])
def testExtractChordsAllTranspositions(self):
testing_lib.add_chords_to_sequence(
self.note_sequence, [('C', 1)])
quantized_sequence = sequences_lib.quantize_note_sequence(
self.note_sequence, self.steps_per_quarter)
quantized_sequence.total_quantized_steps = 2
chord_progressions, _ = chords_lib.extract_chords(quantized_sequence,
all_transpositions=True)
expected = list(zip([NO_CHORD] * 12, ['Gb', 'G', 'Ab', 'A', 'Bb', 'B',
'C', 'Db', 'D', 'Eb', 'E', 'F']))
self.assertEqual(expected, [tuple(chords) for chords in chord_progressions])
def transform(self, quantized_sequence):
try:
chord_progressions, stats = chords_lib.extract_chords(
quantized_sequence, max_steps=self._max_steps,
all_transpositions=self._all_transpositions)
except events_lib.NonIntegerStepsPerBarError as detail:
tf.logging.warning('Skipped sequence: %s', detail)
chord_progressions = []
stats = [statistics.Counter('non_integer_steps_per_bar', 1)]
except chords_lib.CoincidentChordsError as detail:
tf.logging.warning('Skipped sequence: %s', detail)
chord_progressions = []
stats = [statistics.Counter('coincident_chords', 1)]
except chord_symbols_lib.ChordSymbolError as detail:
tf.logging.warning('Skipped sequence: %s', detail)
chord_progressions = []
stats = [statistics.Counter('chord_symbol_exception', 1)]
self._set_stats(stats)
return chord_progressions
def transform(self, quantized_sequence):
try:
chord_progressions, stats = chords_lib.extract_chords(
quantized_sequence, max_steps=self._max_steps,
all_transpositions=self._all_transpositions)
except events_lib.NonIntegerStepsPerBarException as detail:
tf.logging.warning('Skipped sequence: %s', detail)
chord_progressions = []
stats = [statistics.Counter('non_integer_steps_per_bar', 1)]
except chords_lib.CoincidentChordsException as detail:
tf.logging.warning('Skipped sequence: %s', detail)
chord_progressions = []
stats = [statistics.Counter('coincident_chords', 1)]
except chord_symbols_lib.ChordSymbolException as detail:
tf.logging.warning('Skipped sequence: %s', detail)
chord_progressions = []
stats = [statistics.Counter('chord_symbol_exception', 1)]
self._set_stats(stats)
return chord_progressions