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