# coding=utf-8 """Medley-Solos-DB dataset.""" import os import json import gzip import shutil import pathlib import logging import textwrap import datasets import itertools import typing as tp import pandas as pd import urllib.request from pathlib import Path from copy import deepcopy from tqdm.auto import tqdm from rich.logging import RichHandler logger = logging.getLogger(__name__) logger.addHandler(RichHandler()) logger.setLevel(logging.INFO) SAMPLE_RATE = 44_100 # Cache location VERSION = "0.0.1" DEFAULT_XDG_CACHE_HOME = "~/.cache" XDG_CACHE_HOME = os.getenv("XDG_CACHE_HOME", DEFAULT_XDG_CACHE_HOME) DEFAULT_HF_CACHE_HOME = os.path.join(XDG_CACHE_HOME, "huggingface") HF_CACHE_HOME = os.path.expanduser(os.getenv("HF_HOME", DEFAULT_HF_CACHE_HOME)) DEFAULT_HF_DATASETS_CACHE = os.path.join(HF_CACHE_HOME, "datasets") HF_DATASETS_CACHE = Path(os.getenv("HF_DATASETS_CACHE", DEFAULT_HF_DATASETS_CACHE)) CLASSES = [ 'clarinet', 'distorted electric guitar', 'female singer', 'flute', 'piano', 'tenor saxophone', 'trumpet', 'violin' ] CLASS2INDEX = {cls:idx for idx, cls in enumerate(CLASSES)} INDEX2CLASS = {idx:cls for idx, cls in enumerate(CLASSES)} class MedleySolosDBConfig(datasets.BuilderConfig): """BuilderConfig for Medley-Solos-DB.""" def __init__(self, features, **kwargs): super(MedleySolosDBConfig, self).__init__(version=datasets.Version(VERSION, ""), **kwargs) self.features = features class MedleySolosDB(datasets.GeneratorBasedBuilder): BUILDER_CONFIGS = [ MedleySolosDBConfig( features=datasets.Features( { "file": datasets.Value("string"), "audio": datasets.Audio(sampling_rate=SAMPLE_RATE), "instrument": datasets.Value("string"), "label": datasets.features.ClassLabel(names=CLASSES), } ), name="v1.2", description="", ), ] DEFAULT_CONFIG_NAME = "v1.2" def _info(self): return datasets.DatasetInfo( description="", features=self.config.features, supervised_keys=None, homepage="", citation="", task_templates=None, ) def _split_generators(self, dl_manager): """Returns SplitGenerators.""" zip_file_url = "https://zenodo.org/records/3464194/files/Medley-solos-DB.tar.gz" _filename = zip_file_url.split('/')[-1] _save_path = os.path.join( HF_DATASETS_CACHE, 'confit___medley-solos-db/v1.2', VERSION, _filename ) download_file(zip_file_url, _save_path) logger.info(f"`{_filename}` is downloaded to {_save_path}") archive_path = dl_manager.extract(_save_path) logger.info(f"`{_filename}` is now extracted to {archive_path}") return [ datasets.SplitGenerator( name=datasets.Split.TRAIN, gen_kwargs={"archive_path": archive_path, "split": "train"} ), datasets.SplitGenerator( name=datasets.Split.VALIDATION, gen_kwargs={"archive_path": archive_path, "split": "validation"} ), datasets.SplitGenerator( name=datasets.Split.TEST, gen_kwargs={"archive_path": archive_path, "split": "test"} ), ] def _generate_examples(self, archive_path, split=None): metadata_df = pd.read_csv("https://zenodo.org/records/3464194/files/Medley-solos-DB_metadata.csv") train_df = metadata_df[metadata_df["subset"] == "training"].reset_index(drop=True) validation_df = metadata_df[metadata_df["subset"] == "validation"].reset_index(drop=True) test_df = metadata_df[metadata_df["subset"] == "test"].reset_index(drop=True) extensions = ['.wav'] _, _walker = fast_scandir(archive_path, extensions, recursive=True) if split == 'train': fileid2class = {} for idx, row in train_df.iterrows(): fileid = row['uuid4'] class_ = row['instrument'] fileid2class[fileid] = class_ elif split == 'validation': fileid2class = {} for idx, row in validation_df.iterrows(): fileid = row['uuid4'] class_ = row['instrument'] fileid2class[fileid] = class_ elif split == 'test': fileid2class = {} for idx, row in test_df.iterrows(): fileid = row['uuid4'] class_ = row['instrument'] fileid2class[fileid] = class_ _walker = [fileid for fileid in _walker if not Path(fileid).name.startswith('._Medley')] for guid, audio_path in enumerate(_walker): fileid = Path(audio_path).stem fileid = fileid.split('_')[-1] if fileid not in fileid2class: continue instrument = fileid2class.get(fileid) yield guid, { "id": str(guid), "file": audio_path, "audio": audio_path, "instrument": instrument, "label": instrument, } def fast_scandir(path: str, exts: tp.List[str], recursive: bool = False): # Scan files recursively faster than glob # From github.com/drscotthawley/aeiou/blob/main/aeiou/core.py subfolders, files = [], [] try: # hope to avoid 'permission denied' by this try for f in os.scandir(path): try: # 'hope to avoid too many levels of symbolic links' error if f.is_dir(): subfolders.append(f.path) elif f.is_file(): if os.path.splitext(f.name)[1].lower() in exts: files.append(f.path) except Exception: pass except Exception: pass if recursive: for path in list(subfolders): sf, f = fast_scandir(path, exts, recursive=recursive) subfolders.extend(sf) files.extend(f) # type: ignore return subfolders, files def download_file( source, dest, unpack=False, dest_unpack=None, replace_existing=False, write_permissions=False, ): """Downloads the file from the given source and saves it in the given destination path. Arguments --------- source : path or url Path of the source file. If the source is an URL, it downloads it from the web. dest : path Destination path. unpack : bool If True, it unpacks the data in the dest folder. dest_unpack: path Path where to store the unpacked dataset replace_existing : bool If True, replaces the existing files. write_permissions: bool When set to True, all the files in the dest_unpack directory will be granted write permissions. This option is active only when unpack=True. """ class DownloadProgressBar(tqdm): """DownloadProgressBar class.""" def update_to(self, b=1, bsize=1, tsize=None): """Needed to support multigpu training.""" if tsize is not None: self.total = tsize self.update(b * bsize - self.n) # Create the destination directory if it doesn't exist dest_dir = pathlib.Path(dest).resolve().parent dest_dir.mkdir(parents=True, exist_ok=True) if "http" not in source: shutil.copyfile(source, dest) elif not os.path.isfile(dest) or ( os.path.isfile(dest) and replace_existing ): print(f"Downloading {source} to {dest}") with DownloadProgressBar( unit="B", unit_scale=True, miniters=1, desc=source.split("/")[-1], ) as t: urllib.request.urlretrieve( source, filename=dest, reporthook=t.update_to ) else: print(f"{dest} exists. Skipping download") # Unpack if necessary if unpack: if dest_unpack is None: dest_unpack = os.path.dirname(dest) print(f"Extracting {dest} to {dest_unpack}") # shutil unpack_archive does not work with tar.gz files if ( source.endswith(".tar.gz") or source.endswith(".tgz") or source.endswith(".gz") ): out = dest.replace(".gz", "") with gzip.open(dest, "rb") as f_in: with open(out, "wb") as f_out: shutil.copyfileobj(f_in, f_out) else: shutil.unpack_archive(dest, dest_unpack) if write_permissions: set_writing_permissions(dest_unpack) def set_writing_permissions(folder_path): """ This function sets user writing permissions to all the files in the given folder. Arguments --------- folder_path : folder Folder whose files will be granted write permissions. """ for root, dirs, files in os.walk(folder_path): for file_name in files: file_path = os.path.join(root, file_name) # Set writing permissions (mode 0o666) to the file os.chmod(file_path, 0o666)