Program Listing for File inference_processor.hpp

            

            
/*
* SPDX-FileCopyrightText: Copyright (c) 2022-2024 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.
*/

#ifndef HOLOSCAN_OPERATORS_INFERENCE_PROCESSOR_INFERENCE_PROCESSOR_HPP
#define HOLOSCAN_OPERATORS_INFERENCE_PROCESSOR_INFERENCE_PROCESSOR_HPP

#include <map>
#include <memory>
#include <string>
#include <vector>

#include "holoscan/core/io_context.hpp"
#include "holoscan/core/io_spec.hpp"
#include "holoscan/core/operator.hpp"
#include "holoscan/core/operator_spec.hpp"
#include "holoscan/utils/cuda_stream_handler.hpp"

#include "holoinfer.hpp"
#include "holoinfer_buffer.hpp"
#include "holoinfer_utils.hpp"

namespace HoloInfer = holoscan::inference;

namespace holoscan::ops {
class InferenceProcessorOp : public holoscan::Operator {
 public:
  HOLOSCAN_OPERATOR_FORWARD_ARGS(InferenceProcessorOp)

  InferenceProcessorOp() = default;

  void setup(OperatorSpec& spec) override;
  void initialize() override;
  void start() override;
  void compute(InputContext& op_input, OutputContext& op_output,
               ExecutionContext& context) override;

  struct DataMap {
    DataMap() = default;
    explicit operator bool() const noexcept { return !mappings_.empty(); }
    void insert(const std::string& key, const std::string& value) { mappings_[key] = value; }

    std::map<std::string, std::string> get_map() const { return mappings_; }

    std::map<std::string, std::string> mappings_;
  };

  struct DataVecMap {
    DataVecMap() = default;
    explicit operator bool() const noexcept { return !mappings_.empty(); }
    void insert(const std::string& key, const std::vector<std::string>& value) {
      for (const auto& val : value) mappings_[key].push_back(val);
    }

    std::map<std::string, std::vector<std::string>> get_map() const { return mappings_; }

    std::map<std::string, std::vector<std::string>> mappings_;
  };

 private:
  Parameter<DataVecMap> process_operations_;

  Parameter<DataVecMap> processed_map_;

  Parameter<std::string> config_path_;

  Parameter<std::vector<std::string>> in_tensor_names_;

  Parameter<std::vector<std::string>> out_tensor_names_;

  Parameter<std::shared_ptr<Allocator>> allocator_;

  Parameter<bool> input_on_cuda_;

  Parameter<bool> output_on_cuda_;

  Parameter<bool> transmit_on_cuda_;

  void conditional_disable_output_port(const std::string& name);

  // Internal state

  std::unique_ptr<HoloInfer::ProcessorContext> holoscan_postprocess_context_;

  HoloInfer::DataMap data_per_tensor_;

  std::map<std::string, std::vector<int>> dims_per_tensor_;

  const std::string module_{"Inference Processor Operator"};

  CudaStreamHandler cuda_stream_handler_;
};

}  // namespace holoscan::ops
#endif/* HOLOSCAN_OPERATORS_INFERENCE_PROCESSOR_INFERENCE_PROCESSOR_HPP */