| import csv |
| import os |
| import tarfile |
| from hashlib import sha1 |
|
|
|
|
| def hexdigest(string): |
| return sha1(string.encode()).hexdigest() |
|
|
|
|
| def read_fairseq(root, subset): |
| with open(f"{root}/{subset}/train.tsv", 'r') as tsv, open(f"{root}/{subset}/train.wrd", 'r') as wrd: |
| audio = map(lambda x: x[0], csv.reader(tsv, delimiter='\t')) |
| transcriptions = map(lambda x: x.strip(), wrd.readlines()) |
| metadata = [[path, hexdigest(transcription), transcription] |
| for path, transcription in zip(audio, transcriptions)] |
| return metadata[1:] |
|
|
|
|
| def shard_wav_files(file_paths, shard_size_limit, output_dir, arcnames=None): |
| shard_index = 1 |
| current_shard_size = 0 |
| current_tar = None |
|
|
| for i, file_path in enumerate(file_paths): |
| file_size = os.path.getsize(file_path) |
|
|
| if not current_tar or current_shard_size + file_size > shard_size_limit: |
| if current_tar: current_tar.close() |
| shard_name = f"shard_{shard_index}.tar" |
| shard_path = os.path.join(output_dir, shard_name) |
| current_tar = tarfile.open(shard_path, "w") |
| shard_index += 1 |
| current_shard_size = 0 |
|
|
| current_tar.add(file_path, arcname=arcnames[i] if arcnames else os.path.basename(file_path)) |
| current_shard_size += file_size |
|
|
| if current_tar: current_tar.close() |
|
|
