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import os
import datasets
import numpy as np
class YourDataset(datasets.GeneratorBasedBuilder):
VERSION = datasets.Version("1.0.0")
BUILDER_CONFIGS = [
datasets.BuilderConfig(
name="i3d_rgb",
version=VERSION,
description="i3d RGB dataset",
features=datasets.Features({"video": datasets.Sequence(datasets.Value("float32"))}),
),
datasets.BuilderConfig(
name="i3d_flow",
version=VERSION,
description="i3d Flow dataset",
features=datasets.Features({"video": datasets.Sequence(datasets.Value("float32"))}),
),
datasets.BuilderConfig(
name="vggish_train",
version=VERSION,
description="VGGish Train dataset",
features=datasets.Features({"audio": datasets.Sequence(datasets.Value("float32"))}),
),
datasets.BuilderConfig(
name="vggish_test",
version=VERSION,
description="VGGish Test dataset",
features=datasets.Features({"audio": datasets.Sequence(datasets.Value("float32"))}),
),
]
def _info(self):
features = self.config.features
return datasets.DatasetInfo(
features=features,
)
def _split_generators(self, dl_manager):
data_dir = "Alkemi/xd-violence-small"
splits = []
for config in self.configs:
if config.name.startswith("i3d-features"):
split_name = config.name.split("_")[1]
splits.append(
datasets.SplitGenerator(name=split_name, gen_kwargs={"data_dir": os.path.join(data_dir, "i3d-features", split_name)})
)
elif config.name.startswith("vggish-features"):
split_name = config.name.split("_")[1]
splits.append(
datasets.SplitGenerator(name=split_name, gen_kwargs={"data_dir": os.path.join(data_dir, "vggish-features", split_name)})
)
return splits
def _generate_examples(self, data_dir):
filepaths = []
for root, dirs, files in os.walk(data_dir):
for file in files:
if file.endswith(".npy"):
filepaths.append(os.path.join(root, file))
for i, filepath in enumerate(filepaths):
data = np.load(filepath)
yield i, {"video": data} # or {"audio": data} depending on the configuration
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