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https://github.com/sunnypilot/sunnypilot.git
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f398269b1a
version: sunnypilot v2026.001.000 (dev)
date: 2026-04-06T01:24:35
master commit: 8fec761f89
56 lines
1.8 KiB
Python
Executable File
56 lines
1.8 KiB
Python
Executable File
#!/usr/bin/env python3
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import sys
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import pathlib
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import codecs
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import pickle
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from typing import Any
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from tinygrad.nn.onnx import OnnxPBParser
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class MetadataOnnxPBParser(OnnxPBParser):
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def _parse_ModelProto(self) -> dict:
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obj: dict[str, Any] = {"graph": {"input": [], "output": []}, "metadata_props": []}
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for fid, wire_type in self._parse_message(self.reader.len):
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match fid:
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case 7:
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obj["graph"] = self._parse_GraphProto()
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case 14:
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obj["metadata_props"].append(self._parse_StringStringEntryProto())
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case _:
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self.reader.skip_field(wire_type)
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return obj
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def get_name_and_shape(value_info: dict[str, Any]) -> tuple[str, tuple[int, ...]]:
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shape = tuple(int(dim) if isinstance(dim, int) else 0 for dim in value_info["parsed_type"].shape)
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name = value_info["name"]
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return name, shape
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def get_metadata_value_by_name(model: dict[str, Any], name: str) -> str | Any:
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for prop in model["metadata_props"]:
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if prop["key"] == name:
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return prop["value"]
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return None
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if __name__ == "__main__":
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model_path = pathlib.Path(sys.argv[1])
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model = MetadataOnnxPBParser(model_path).parse()
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output_slices = get_metadata_value_by_name(model, 'output_slices')
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assert output_slices is not None, 'output_slices not found in metadata'
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metadata = {
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'model_checkpoint': get_metadata_value_by_name(model, 'model_checkpoint'),
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'output_slices': pickle.loads(codecs.decode(output_slices.encode(), "base64")),
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'input_shapes': dict(get_name_and_shape(x) for x in model["graph"]["input"]),
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'output_shapes': dict(get_name_and_shape(x) for x in model["graph"]["output"]),
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}
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metadata_path = model_path.parent / (model_path.stem + '_metadata.pkl')
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with open(metadata_path, 'wb') as f:
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pickle.dump(metadata, f)
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print(f'saved metadata to {metadata_path}')
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