Update audioset.py

audioset.py

@@ -6,6 +6,7 @@
 import os
 import json
 import gzip
+import joblib
 import shutil
 import pathlib
 import logging
@@ -126,14 +127,25 @@ class AudioSet(datasets.GeneratorBasedBuilder):
             _output_file = os.path.join(HF_DATASETS_CACHE, 'confit___audioset/unbalanced', VERSION, concat_zip_filename)
 
             if not os.path.exists(_output_file):
-                for zip_type in ['zip', 'z01', 'z02']:
+
+                def _download(zip_type):
                     _UNBALANCED_TRAIN_FILENAME = f'unbalanced_train_segments_{partxx}_partial.{zip_type}'
                     zip_file_url = f'https://huggingface.co/datasets/confit/audioset/resolve/main/unbalanced/{_UNBALANCED_TRAIN_FILENAME}'
                     _save_path = os.path.join(
-                        HF_DATASETS_CACHE, 'confit___audioset/unbalanced', VERSION, _UNBALANCED_TRAIN_FILENAME
+                        HF_DATASETS_CACHE, 'confit___audioset/unbalanced', VERSION
+                    )
+                    download_file(
+                        source=zip_file_url, 
+                        dest=os.path.join(_save_path, _UNBALANCED_TRAIN_FILENAME)
                     )
-                    download_file(zip_file_url, _save_path)
                     logger.info(f"`{_UNBALANCED_TRAIN_FILENAME}` is downloaded to {_save_path}")
+
+                joblib.Parallel(n_jobs=4, verbose=10)(
+                    joblib.delayed(_download)(
+                        zip_type=zip_type
+                    ) for zip_type in ['zip', 'z01', 'z02']
+                )
+                    
                 logger.info(f"Reassembling {_output_file}")
                 os.system(f"zip -q -F {_input_file} --out {_output_file}")
                 part_zip_files = os.path.join(
@@ -141,8 +153,9 @@ class AudioSet(datasets.GeneratorBasedBuilder):
                 )
                 os.system(f"rm -rf {part_zip_files}")
             
-            train_archive_path = dl_manager.extract(_output_file)
-            logger.info(f"`{concat_zip_filename}` is downloaded to {train_archive_path}")
+            dest = os.path.join(HF_DATASETS_CACHE, 'confit___audioset/unbalanced', VERSION, 'extracted')
+            unpack(_output_file, dest)
+            logger.info(f"`{concat_zip_filename}` is downloaded to {dest}")
             
         if self.config.name == 'balanced':
             zip_file_url = f'https://huggingface.co/datasets/confit/audioset/resolve/main/{_EVAL_FILENAME}'
@@ -310,7 +323,32 @@ def download_file(
     if unpack:
         if dest_unpack is None:
             dest_unpack = os.path.dirname(dest)
-        logger.info(f"Extracting {dest} to {dest_unpack}")
+        if os.path.exists(dest_unpack):
+            logger.info(f"{dest_unpack} already exists. Skipping extraction")
+        else:
+            logger.info(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 unpack(source, dest):
+    dest_unpack = os.path.dirname(dest)
+    if os.path.exists(dest_unpack):
+        logger.info(f"{dest_unpack} already exists. Skipping extraction")
+    else:
+        logger.info(f"Extracting {source} to {dest_unpack}")
         # shutil unpack_archive does not work with tar.gz files
         if (
             source.endswith(".tar.gz")