chore: import upstream snapshot with attribution

scripts/speechlm2/export_conversations_to_tar.py

@@ -0,0 +1,41 @@
+# Copyright (c) 2025, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+from random import Random
+
+import click
+from lhotse import CutSet
+
+from nemo.collections.common.data.lhotse.text_adapters import (
+    NeMoMultimodalConversationJsonlAdapter,
+    NeMoMultimodalConversationTarWriter,
+)
+
+
+@click.command()
+@click.argument("manifest", type=click.Path())
+@click.argument("output_dir", type=click.Path())
+@click.option("-n", "--shard_size", type=int, default=100, help="Number of conversations per shard.")
+@click.option("--shuffle/--no-shuffle", default=False, help="Shuffle conversations.")
+@click.option("-s", "--seed", type=int, default=42, help="Random seed.")
+def export(manifest: str, output_dir: str, shard_size: int, shuffle: bool, seed: int):
+    with NeMoMultimodalConversationTarWriter(output_dir, shard_size=shard_size) as writer:
+        source = NeMoMultimodalConversationJsonlAdapter(manifest, audio_locator_tag="<dummy>")
+        if shuffle:
+            source = CutSet(source).shuffle(buffer_size=50000, rng=Random(seed))
+        for item in source:
+            writer.write(item)
+
+
+if __name__ == '__main__':
+    export()