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77 lines
2.3 KiB
77 lines
2.3 KiB
# Copyright (c) 2021 Arm Limited.
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#
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# SPDX-License-Identifier: MIT
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import logging
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import os
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def is_tflite_model(model_path):
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"""Check if a model is of TFLite type
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Parameters:
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----------
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model_path: str
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Path to model
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Returns
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----------
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bool:
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True if given path is a valid TFLite model
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"""
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try:
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with open(model_path, "rb") as f:
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hdr_bytes = f.read(8)
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hdr_str = hdr_bytes[4:].decode("utf-8")
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if hdr_str == "TFL3":
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return True
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else:
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return False
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except:
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return False
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def identify_model_type(model_path):
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"""Identify the type of a given deep learning model
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Parameters:
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----------
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model_path: str
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Path to model
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Returns
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----------
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model_type: str
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String representation of model type or 'None' if type could not be retrieved.
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"""
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if not os.path.exists(model_path):
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logging.warn(f"Provided model {model_path} does not exist!")
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return None
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if is_tflite_model(model_path):
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model_type = "tflite"
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else:
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logging.warn(logging.warn(f"Provided model {model_path} is not of supported type!"))
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model_type = None
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return model_type
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