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42 lines
1.6 KiB
Python
42 lines
1.6 KiB
Python
# Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from random import Random
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import click
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from lhotse import CutSet
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from nemo.collections.common.data.lhotse.text_adapters import (
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NeMoMultimodalConversationJsonlAdapter,
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NeMoMultimodalConversationTarWriter,
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)
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@click.command()
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@click.argument("manifest", type=click.Path())
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@click.argument("output_dir", type=click.Path())
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@click.option("-n", "--shard_size", type=int, default=100, help="Number of conversations per shard.")
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@click.option("--shuffle/--no-shuffle", default=False, help="Shuffle conversations.")
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@click.option("-s", "--seed", type=int, default=42, help="Random seed.")
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def export(manifest: str, output_dir: str, shard_size: int, shuffle: bool, seed: int):
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with NeMoMultimodalConversationTarWriter(output_dir, shard_size=shard_size) as writer:
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source = NeMoMultimodalConversationJsonlAdapter(manifest, audio_locator_tag="<dummy>")
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if shuffle:
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source = CutSet(source).shuffle(buffer_size=50000, rng=Random(seed))
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for item in source:
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writer.write(item)
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if __name__ == '__main__':
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export()
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