export.py

# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import yaml
import argparse
from rknn.api import RKNN


def get_config():
    parser = argparse.ArgumentParser()
    parser.add_argument("--verbose", default=True, help="rknntoolkit verbose")
    parser.add_argument("--config_path")
    parser.add_argument("--target_platform")
    args = parser.parse_args()
    return args


if __name__ == "__main__":
    config = get_config()
    with open(config.config_path) as file:
        file_data = file.read()
        yaml_config = yaml.safe_load(file_data)
    print(yaml_config)
    model = RKNN(config.verbose)

    # Config
    mean_values = yaml_config["mean"]
    std_values = yaml_config["std"]
    model.config(
        mean_values=mean_values,
        std_values=std_values,
        target_platform=config.target_platform)

    # Load ONNX model
    if yaml_config["outputs_nodes"] is None:
        ret = model.load_onnx(model=yaml_config["model_path"])
    else:
        ret = model.load_onnx(
            model=yaml_config["model_path"],
            outputs=yaml_config["outputs_nodes"])
    assert ret == 0, "Load model failed!"

    # Build model
    ret = model.build(
        do_quantization=yaml_config["do_quantization"],
        dataset=yaml_config["dataset"])
    assert ret == 0, "Build model failed!"

    # Init Runtime
    ret = model.init_runtime()
    assert ret == 0, "Init runtime environment failed!"

    # Export
    if not os.path.exists(yaml_config["output_folder"]):
        os.mkdir(yaml_config["output_folder"])

    name_list = os.path.basename(yaml_config["model_path"]).split(".")
    model_base_name = ""
    for name in name_list[0:-1]:
        model_base_name += name
    model_device_name = config.target_platform.lower()
    if yaml_config["do_quantization"]:
        model_save_name = model_base_name + "_" + model_device_name + "_quantized" + ".rknn"
    else:
        model_save_name = model_base_name + "_" + model_device_name + "_unquantized" + ".rknn"
    ret = model.export_rknn(
        os.path.join(yaml_config["output_folder"], model_save_name))
    assert ret == 0, "Export rknn model failed!"
    print("Export OK!")