Program Listing for File core.hpp

            

            
/*
* SPDX-FileCopyrightText: Copyright (c) 2022-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*/
#include <cstring>
#include <iostream>
#include <memory>
#include <string>
#include <vector>

#include <NvInfer.h>

#include <holoinfer_constants.hpp>
#include <infer/infer.hpp>
#include "utils.hpp"

namespace holoscan {
namespace inference {
class TrtInfer : public InferBase {
 public:
  TrtInfer(const std::string& model_path, const std::string& model_name, int device_id,
           bool enable_fp16, bool is_engine_path, bool cuda_buf_in, bool cuda_buf_out);

  ~TrtInfer();

  InferStatus do_inference(const std::vector<std::shared_ptr<DataBuffer>>& input_data,
                           std::vector<std::shared_ptr<DataBuffer>>& output_buffer);

  std::vector<std::vector<int64_t>> get_input_dims() const;

  std::vector<std::vector<int64_t>> get_output_dims() const;

  std::vector<holoinfer_datatype> get_input_datatype() const;

  std::vector<holoinfer_datatype> get_output_datatype() const;

  void cleanup() {}

 private:
  std::string model_path_;

  std::string model_name_;

  std::vector<std::vector<int64_t>> input_dims_;

  std::vector<std::vector<int64_t>> output_dims_;

  std::vector<holoinfer_datatype> in_data_types_;

  std::vector<holoinfer_datatype> out_data_types_;

  bool enable_fp16_;

  bool cuda_buf_in_;

  bool cuda_buf_out_;

  bool is_engine_path_;

  bool initialize_parameters();

  bool load_engine();

  std::unique_ptr<nvinfer1::ICudaEngine> engine_ = nullptr;

  std::unique_ptr<nvinfer1::IExecutionContext> context_ = nullptr;

  NetworkOptions network_options_;

  int device_id_;
  Logger logger_;

  std::shared_ptr<DataBuffer> input_buffer_;

  std::shared_ptr<DataBuffer> output_buffer_;

  std::string engine_path_;

  cudaStream_t cuda_stream_ = nullptr;

  std::unique_ptr<nvinfer1::IRuntime> infer_runtime_;
};

}  // namespace inference
}  // namespace holoscan