Program Listing for File filter_detections.hpp

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/*
 * SPDX-FileCopyrightText: Copyright (c) 2022-2025, 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.
 */

#pragma once

#include "morpheus/export.h"                   // for MORPHEUS_EXPORT
#include "morpheus/messages/control.hpp"       // for ControlMessage
#include "morpheus/objects/dev_mem_info.hpp"   // for DevMemInfo
#include "morpheus/objects/filter_source.hpp"  // for FilterSource

#include <boost/fiber/context.hpp>  // for operator<<
#include <mrc/segment/builder.hpp>  // for Builder
#include <mrc/segment/object.hpp>   // for Object
#include <pymrc/node.hpp>           // for PythonNode
#include <rxcpp/rx.hpp>             // for trace_activity, decay_t, from

#include <cstddef>  // for size_t
#include <map>      // for map
#include <memory>   // for shared_ptr, allocator
#include <string>   // for string
#include <thread>   // for operator<<

namespace morpheus {
/****** Component public implementations *******************/
/****** FilterDetectionStage********************************/

class MORPHEUS_EXPORT FilterDetectionsStage
  : public mrc::pymrc::PythonNode<std::shared_ptr<ControlMessage>, std::shared_ptr<ControlMessage>>
{
  public:
    using base_t = mrc::pymrc::PythonNode<std::shared_ptr<ControlMessage>, std::shared_ptr<ControlMessage>>;
    using typename base_t::sink_type_t;
    using typename base_t::source_type_t;
    using typename base_t::subscribe_fn_t;

    FilterDetectionsStage(float threshold, bool copy, FilterSource filter_source, std::string field_name = "probs");

  private:
    subscribe_fn_t build_operator();
    DevMemInfo get_tensor_filter_source(const sink_type_t& x);
    DevMemInfo get_column_filter_source(const sink_type_t& x);

    float m_threshold;
    bool m_copy;
    FilterSource m_filter_source;
    std::string m_field_name;
    std::size_t m_num_class_labels;
    std::map<std::size_t, std::string> m_idx2label;
};

/****** FilterDetectionStageInterfaceProxy******************/
struct MORPHEUS_EXPORT FilterDetectionStageInterfaceProxy
{
    static std::shared_ptr<mrc::segment::Object<FilterDetectionsStage>> init(mrc::segment::Builder& builder,
                                                                             const std::string& name,
                                                                             float threshold,
                                                                             bool copy,
                                                                             FilterSource filter_source,
                                                                             std::string field_name);
};
  // end of group
}  // namespace morpheus