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#!/usr/bin/env python3 | |
# Copyright (c) Facebook, Inc. and its affiliates. | |
# | |
# This source code is licensed under the MIT license found in the | |
# LICENSE file in the root directory of this source tree. | |
""" | |
Data pre-processing: build vocabularies and binarize training data. | |
""" | |
import argparse | |
import glob | |
import os | |
import random | |
import soundfile | |
def get_parser(): | |
parser = argparse.ArgumentParser() | |
parser.add_argument( | |
"root", metavar="DIR", help="root directory containing flac files to index" | |
) | |
parser.add_argument( | |
"--valid-percent", | |
default=0.01, | |
type=float, | |
metavar="D", | |
help="percentage of data to use as validation set (between 0 and 1)", | |
) | |
parser.add_argument( | |
"--dest", default=".", type=str, metavar="DIR", help="output directory" | |
) | |
parser.add_argument( | |
"--ext", default="flac", type=str, metavar="EXT", help="extension to look for" | |
) | |
parser.add_argument("--seed", default=42, type=int, metavar="N", help="random seed") | |
parser.add_argument( | |
"--path-must-contain", | |
default=None, | |
type=str, | |
metavar="FRAG", | |
help="if set, path must contain this substring for a file to be included in the manifest", | |
) | |
return parser | |
def main(args): | |
assert args.valid_percent >= 0 and args.valid_percent <= 1.0 | |
if not os.path.exists(args.dest): | |
os.makedirs(args.dest) | |
dir_path = os.path.realpath(args.root) | |
search_path = os.path.join(dir_path, "**/*." + args.ext) | |
rand = random.Random(args.seed) | |
valid_f = ( | |
open(os.path.join(args.dest, "valid.tsv"), "w") | |
if args.valid_percent > 0 | |
else None | |
) | |
with open(os.path.join(args.dest, "train.tsv"), "w") as train_f: | |
print(dir_path, file=train_f) | |
if valid_f is not None: | |
print(dir_path, file=valid_f) | |
for fname in glob.iglob(search_path, recursive=True): | |
file_path = os.path.realpath(fname) | |
if args.path_must_contain and args.path_must_contain not in file_path: | |
continue | |
frames = soundfile.info(fname).frames | |
dest = train_f if rand.random() > args.valid_percent else valid_f | |
print( | |
"{}\t{}".format(os.path.relpath(file_path, dir_path), frames), file=dest | |
) | |
if valid_f is not None: | |
valid_f.close() | |
if __name__ == "__main__": | |
parser = get_parser() | |
args = parser.parse_args() | |
main(args) | |