Export Kokoro 1.0 to sherpa-onnx (#1788)

scripts/kokoro/v1.0/add_meta_data.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+# Copyright    2025  Xiaomi Corp.        (authors: Fangjun Kuang)
+
+
+import argparse
+import json
+from pathlib import Path
+
+import numpy as np
+import onnx
+import torch
+
+from generate_voices_bin import speaker2id
+
+
+def main():
+    model = onnx.load("./kokoro.onnx")
+    style = torch.load("./voices/af_alloy.pt", weights_only=True, map_location="cpu")
+
+    id2speaker_str = ""
+    speaker2id_str = ""
+    sep = ""
+    for s, i in speaker2id.items():
+        speaker2id_str += f"{sep}{s}->{i}"
+        id2speaker_str += f"{sep}{i}->{s}"
+        sep = ","
+
+    meta_data = {
+        "model_type": "kokoro",
+        "language": "English",
+        "has_espeak": 1,
+        "sample_rate": 24000,
+        "version": 2,
+        "voice": "en-us",
+        "style_dim": ",".join(map(str, style.shape)),
+        "n_speakers": len(speaker2id),
+        "id2speaker": id2speaker_str,
+        "speaker2id": speaker2id_str,
+        "speaker_names": ",".join(map(str, speaker2id.keys())),
+        "model_url": "https://github.com/thewh1teagle/kokoro-onnx/releases/tag/model-files",
+        "see_also": "https://huggingface.co/spaces/hexgrad/Kokoro-TTS",
+        "see_also_2": "https://huggingface.co/hexgrad/Kokoro-82M",
+        "maintainer": "k2-fsa",
+        "comment": "This is Kokoro v1.0, a multilingual TTS model, supporting English, Chinese, French, Japanese etc.",
+    }
+
+    print(model.metadata_props)
+
+    while len(model.metadata_props):
+        model.metadata_props.pop()
+
+    for key, value in meta_data.items():
+        meta = model.metadata_props.add()
+        meta.key = key
+        meta.value = str(value)
+    print("--------------------")
+
+    print(model.metadata_props)
+
+    onnx.save(model, "./kokoro.onnx")
+
+
+if __name__ == "__main__":
+    main()