def testGenerateId(self):
sequence_id_1 = note_sequence_io.generate_id('/my/file/name',
'my_collection', 'midi')
self.assertEquals('/id/midi/my_collection/', sequence_id_1[0:23])
sequence_id_2 = note_sequence_io.generate_id('/my/file/name',
'your_collection', 'abc')
self.assertEquals('/id/abc/your_collection/', sequence_id_2[0:24])
self.assertEquals(sequence_id_1[23:], sequence_id_2[24:])
sequence_id_3 = note_sequence_io.generate_id('/your/file/name',
'my_collection', 'abc')
self.assertNotEquals(sequence_id_3[22:], sequence_id_1[23:])
self.assertNotEquals(sequence_id_3[22:], sequence_id_2[24:])
def testGenerateId(self):
sequence_id_1 = note_sequence_io.generate_id(
'/my/file/name', 'my_collection', 'midi')
self.assertEquals('/id/midi/my_collection/', sequence_id_1[0:23])
sequence_id_2 = note_sequence_io.generate_id(
'/my/file/name', 'your_collection', 'abc')
self.assertEquals('/id/abc/your_collection/', sequence_id_2[0:24])
self.assertEquals(sequence_id_1[23:], sequence_id_2[24:])
sequence_id_3 = note_sequence_io.generate_id(
'/your/file/name', 'my_collection', 'abc')
self.assertNotEquals(sequence_id_3[22:], sequence_id_1[23:])
self.assertNotEquals(sequence_id_3[22:], sequence_id_2[24:])
def runTest(self, relative_root, recursive):
"""Tests the output for the given parameters."""
root_dir = os.path.join(self.root_dir, relative_root)
expected_filenames = self.expected_dir_midi_contents[relative_root]
if recursive:
for sub_dir in self.expected_sub_dirs[relative_root]:
for filename in self.expected_dir_midi_contents[
os.path.join(relative_root, sub_dir)]:
expected_filenames.add(os.path.join(sub_dir, filename))
with tempfile.NamedTemporaryFile(
prefix='ConvertMidiDirToSequenesTest') as output_file:
with note_sequence_io.NoteSequenceRecordWriter(
output_file.name) as writer:
convert_midi_dir_to_note_sequences.convert_directory(
root_dir, '', writer, recursive)
actual_filenames = set()
for sequence in note_sequence_io.note_sequence_record_iterator(
output_file.name):
self.assertEquals(
note_sequence_io.generate_id(sequence.filename,
os.path.basename(relative_root),
'midi'),
sequence.id)
self.assertEquals(os.path.basename(root_dir), sequence.collection_name)
self.assertNotEquals(0, len(sequence.notes))
actual_filenames.add(sequence.filename)
self.assertEquals(expected_filenames, actual_filenames)
def convert_directory(root_dir, sub_dir, sequence_writer, recursive=False):
"""Converts MIDIs to NoteSequences and writes to `sequence_writer`.
MIDI files found in the specified directory specified by the combination of
`root_dir` and `sub_dir` and converted to NoteSequence protos with the
basename of `root_dir` as the collection_name, and the relative path to the
MIDI file from `root_dir` as the filename. If `recursive` is true, recursively
converts any subdirectories of the specified directory.
Args:
root_dir: A string specifying a root directory.
sub_dir: A string specifying a path to a directory under `root_dir` in which
to convert MIDI contents.
sequence_writer: A NoteSequenceRecordWriter to write the resulting
NoteSequence protos to.
recursive: A boolean specifying whether or not recursively convert MIDIs
contained in subdirectories of the specified directory.
Returns:
The number of NoteSequence protos written as an integer.
"""
dir_to_convert = os.path.join(root_dir, sub_dir)
tf.logging.info("Converting MIDI files in '%s'.", dir_to_convert)
files_in_dir = tf.gfile.ListDirectory(os.path.join(dir_to_convert))
recurse_sub_dirs = []
sequences_written = 0
sequences_skipped = 0
for file_in_dir in files_in_dir:
full_file_path = os.path.join(dir_to_convert, file_in_dir)
if tf.gfile.IsDirectory(full_file_path):
if recursive:
recurse_sub_dirs.append(os.path.join(sub_dir, file_in_dir))
continue
try:
sequence = midi_io.midi_to_sequence_proto(
tf.gfile.FastGFile(full_file_path).read())
except midi_io.MIDIConversionError as e:
tf.logging.warning(
'Could not parse MIDI file %s. It will be skipped. Error was: %s',
full_file_path, e)
sequences_skipped += 1
continue
sequence.collection_name = os.path.basename(root_dir)
sequence.filename = os.path.join(sub_dir, file_in_dir)
sequence.id = note_sequence_io.generate_id(sequence.filename,
sequence.collection_name,
'midi')
sequence_writer.write(sequence)
sequences_written += 1
tf.logging.info("Converted %d MIDI files in '%s'.", sequences_written,
dir_to_convert)
tf.logging.info('Could not parse %d MIDI files.', sequences_skipped)
for recurse_sub_dir in recurse_sub_dirs:
sequences_written += convert_directory(root_dir, recurse_sub_dir,
sequence_writer, recursive)
return sequences_written
def convert_directory(root_dir, sub_dir, sequence_writer, recursive=False):
"""Converts MIDIs to NoteSequences and writes to `sequence_writer`.
MIDI files found in the specified directory specified by the combination of
`root_dir` and `sub_dir` and converted to NoteSequence protos with the
basename of `root_dir` as the collection_name, and the relative path to the
MIDI file from `root_dir` as the filename. If `recursive` is true, recursively
converts any subdirectories of the specified directory.
Args:
root_dir: A string specifying a root directory.
sub_dir: A string specifying a path to a directory under `root_dir` in which
to convert MIDI contents.
sequence_writer: A NoteSequenceRecordWriter to write the resulting
NoteSequence protos to.
recursive: A boolean specifying whether or not recursively convert MIDIs
contained in subdirectories of the specified directory.
Returns:
The number of NoteSequence protos written as an integer.
"""
dir_to_convert = os.path.join(root_dir, sub_dir)
tf.logging.info("Converting MIDI files in '%s'.", dir_to_convert)
files_in_dir = tf.gfile.ListDirectory(os.path.join(dir_to_convert))
recurse_sub_dirs = []
sequences_written = 0
sequences_skipped = 0
for file_in_dir in files_in_dir:
full_file_path = os.path.join(dir_to_convert, file_in_dir)
if tf.gfile.IsDirectory(full_file_path):
if recursive:
recurse_sub_dirs.append(os.path.join(sub_dir, file_in_dir))
continue
try:
sequence = midi_io.midi_to_sequence_proto(
tf.gfile.FastGFile(full_file_path).read())
except midi_io.MIDIConversionError as e:
tf.logging.warning(
'Could not parse MIDI file %s. It will be skipped. Error was: %s',
full_file_path, e)
sequences_skipped += 1
continue
sequence.collection_name = os.path.basename(root_dir)
sequence.filename = os.path.join(sub_dir, file_in_dir)
sequence.id = note_sequence_io.generate_id(sequence.filename,
sequence.collection_name, 'midi')
sequence_writer.write(sequence)
sequences_written += 1
tf.logging.info("Converted %d MIDI files in '%s'.", sequences_written,
dir_to_convert)
tf.logging.info('Could not parse %d MIDI files.', sequences_skipped)
for recurse_sub_dir in recurse_sub_dirs:
sequences_written += convert_directory(
root_dir, recurse_sub_dir, sequence_writer, recursive)
return sequences_written
