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Program Listing for File gxf_operator.hpp

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/* * SPDX-FileCopyrightText: Copyright (c) 2022 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_CORE_GXF_GXF_OPERATOR_HPP #define HOLOSCAN_CORE_GXF_GXF_OPERATOR_HPP #include "../operator.hpp" #include <iostream> #include <gxf/core/gxf.h> #include "../argument_setter.hpp" #include "../executors/gxf/gxf_parameter_adaptor.hpp" namespace holoscan::ops { class GXFOperator : public holoscan::Operator { public: HOLOSCAN_OPERATOR_FORWARD_ARGS(GXFOperator) GXFOperator() = default; void initialize() override; virtual const char* gxf_typename() const = 0; template <typename typeT> static void register_converter() { ArgumentSetter::get_instance().add_argument_setter<typeT>([](ParameterWrapper& param_wrap, Arg& arg) { std::any& any_param = param_wrap.value(); std::any& any_arg = arg.value(); // Note that the type of any_param is Parameter *, not Parameter . auto& param = *std::any_cast<Parameter<typeT>*>(any_param); const auto& arg_type = arg.arg_type(); (void)param; auto element_type = arg_type.element_type(); auto container_type = arg_type.container_type(); HOLOSCAN_LOG_DEBUG( "Registering converter for parameter {} (element_type: {}, container_type: {})", arg.name(), (int)element_type, (int)container_type); if (element_type == ArgElementType::kYAMLNode) { auto& arg_value = std::any_cast<YAML::Node&>(any_arg); typeT new_value; bool parse_ok = YAML::convert<typeT>::decode(arg_value, new_value); if (!parse_ok) { HOLOSCAN_LOG_ERROR("Unable to parse YAML node for parameter '{}'", arg.name()); } else { param = std::move(new_value); } } else { auto& arg_value = std::any_cast<typeT&>(any_arg); if (arg_value) { param = arg_value; } else { HOLOSCAN_LOG_ERROR("Unable to handle parameter '{}'", arg.name()); } } }); ::holoscan::gxf::GXFParameterAdaptor::get_instance().add_param_handler<typeT>( [](gxf_context_t context, gxf_uid_t uid, const char* key, const ArgType& arg_type, const std::any& any_value) { try { auto& param = *std::any_cast<Parameter<typeT>*>(any_value); param.set_default_value(); // set default value if not set. if (param.has_value()) { auto& value = param.get(); switch (arg_type.container_type()) { case ArgContainerType::kNative: { if (arg_type.element_type() == ArgElementType::kCustom) { YAML::Node value_node = YAML::convert<typeT>::encode(value); return GxfParameterSetFromYamlNode(context, uid, key, &value_node, ""); } break; } case ArgContainerType::kVector: case ArgContainerType::kArray: { HOLOSCAN_LOG_ERROR( "Unable to handle ArgContainerType::kVector/kArray type for key '{}'", key); break; } } HOLOSCAN_LOG_WARN( "Unable to get argument for key '{}' with type '{}'", key, typeid(typeT).name()); } } catch (const std::bad_any_cast& e) { HOLOSCAN_LOG_ERROR( "Bad any cast exception caught for argument '{}': {}", key, e.what()); } return GXF_FAILURE; }); } protected: gxf_context_t gxf_context_ = nullptr; }; } // namespace holoscan::ops #endif/* HOLOSCAN_CORE_GXF_GXF_OPERATOR_HPP */

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