Add download helper script

download_bizcall.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python
+"""Download the bizcall two-speaker dataset from the Hugging Face Hub
+and rewrite the NeMo manifest with absolute local paths.
+
+Usage:
+    python download_bizcall.py [--out /local/dataset/dir]
+
+Requires:
+    pip install huggingface_hub
+"""
+import argparse
+import json
+from pathlib import Path
+
+from huggingface_hub import snapshot_download
+
+REPO_ID = "jaebin0123/test"
+REPO_TYPE = "dataset"
+
+
+def main():
+    ap = argparse.ArgumentParser()
+    ap.add_argument(
+        "--out",
+        type=Path,
+        default=Path.cwd() / "bizcall",
+        help="local directory where the dataset will be placed",
+    )
+    args = ap.parse_args()
+
+    args.out.mkdir(parents=True, exist_ok=True)
+
+    # Pull only what we need: audio/, rttm/, and the manifest.
+    local_dir = snapshot_download(
+        repo_id=REPO_ID,
+        repo_type=REPO_TYPE,
+        local_dir=str(args.out),
+        allow_patterns=["audio/*", "rttm/*", "bizcall_2spk_manifest.jsonl"],
+    )
+    local_dir = Path(local_dir).resolve()
+    print(f"downloaded to: {local_dir}")
+
+    # Rewrite the manifest with absolute paths so NeMo can use it directly.
+    manifest_in = local_dir / "bizcall_2spk_manifest.jsonl"
+    manifest_out = local_dir / "bizcall_2spk_manifest.local.jsonl"
+
+    if not manifest_in.exists():
+        print(f"WARNING: manifest not found at {manifest_in}")
+        return
+
+    with open(manifest_in) as fin, open(manifest_out, "w") as fout:
+        for line in fin:
+            line = line.strip()
+            if not line:
+                continue
+            entry = json.loads(line)
+            entry["audio_filepath"] = entry["audio_filepath"].replace(
+                "{BASE}", str(local_dir)
+            )
+            entry["rttm_filepath"] = entry["rttm_filepath"].replace(
+                "{BASE}", str(local_dir)
+            )
+            fout.write(json.dumps(entry, ensure_ascii=False) + "\n")
+
+    print(f"local manifest written: {manifest_out}")
+
+
+if __name__ == "__main__":
+    main()