mirror of
https://github.com/ggerganov/whisper.cpp.git
synced 2024-12-24 14:46:39 +00:00
54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
import argparse
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import torch
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from whisper import load_model
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import os
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from openvino.tools import mo
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from openvino.runtime import serialize
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import shutil
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def convert_encoder(hparams, encoder, mname):
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encoder.eval()
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mel = torch.zeros((1, hparams.n_mels, 3000))
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onnx_folder=os.path.join(os.path.dirname(__file__),"onnx_encoder")
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#create a directory to store the onnx model, and other collateral that is saved during onnx export procedure
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if not os.path.isdir(onnx_folder):
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os.makedirs(onnx_folder)
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onnx_path = os.path.join(onnx_folder, "whisper_encoder.onnx")
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torch.onnx.export(
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encoder,
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mel,
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onnx_path,
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input_names=["mel"],
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output_names=["output_features"]
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)
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# use model optimizer to convert onnx to OpenVINO IR format
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encoder_model = mo.convert_model(onnx_path, compress_to_fp16=True)
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serialize(encoder_model, xml_path=os.path.join(os.path.dirname(__file__),"ggml-" + mname + "-encoder-openvino.xml"))
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#cleanup
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if os.path.isdir(onnx_folder):
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shutil.rmtree(onnx_folder)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument("--model", type=str, help="model to convert (e.g. tiny, tiny.en, base, base.en, small, small.en, medium, medium.en, large, large-v1, large-v2)", required=True)
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args = parser.parse_args()
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if args.model not in ["tiny", "tiny.en", "base", "base.en", "small", "small.en", "medium", "medium.en", "large", "large-v1", "large-v2"]:
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raise ValueError("Invalid model name")
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whisper = load_model(args.model).cpu()
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hparams = whisper.dims
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encoder = whisper.encoder
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# Convert encoder to onnx
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convert_encoder(hparams, encoder, args.model)
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