post_processor_classify.h

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/*
 * SPDX-FileCopyrightText: Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 * SPDX-License-Identifier: MIT
 *
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 * copy of this software and associated documentation files (the "Software"),
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 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be included in
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#ifndef __POST_PROCESSOR_CLASSIFY_HPP__
#define __POST_PROCESSOR_CLASSIFY_HPP__
 
#include "post_processor.h"
 
 
typedef bool (* NvDsPostProcessClassiferParseCustomFunc) (
        std::vector<NvDsInferLayerInfo> const &outputLayersInfo,
        NvDsInferNetworkInfo  const &networkInfo,
        float classifierThreshold,
        std::vector<NvDsPostProcessAttribute> &attrList,
        std::string &descString);
 
class ClassifyModelPostProcessor : public ModelPostProcessor{
 
public:
  ClassifyModelPostProcessor(int id, int gpuId = 0)
    : ModelPostProcessor (NvDsPostProcessNetworkType_Classifier, id, gpuId) {}
 
  ~ClassifyModelPostProcessor() override = default;
 
  NvDsPostProcessStatus
  initResource(NvDsPostProcessContextInitParams& initParams) override;
 
  NvDsPostProcessStatus parseEachFrame(const std::vector <NvDsInferLayerInfo>&
       outputLayers,
       NvDsPostProcessFrameOutput &result) override;
 
  void
   attachMetadata (NvBufSurface *surf, gint batch_idx,
    NvDsBatchMeta  *batch_meta,
    NvDsFrameMeta  *frame_meta,
    NvDsObjectMeta  *object_meta,
    NvDsObjectMeta *parent_obj_meta,
    NvDsPostProcessFrameOutput & detection_output,
    NvDsPostProcessDetectionParams *all_params,
    std::set <gint> & filterOutClassIds,
    int32_t unique_id,
    gboolean output_instance_mask,
    gboolean process_full_frame,
    float segmentationThreshold,
    gboolean maintain_aspect_ratio) override;
 
 
  void
    mergeClassificationOutput (NvDsPostProcessObjectHistory & history,
    NvDsPostProcessObjectInfo &new_result);
 
  void releaseFrameOutput(NvDsPostProcessFrameOutput& frameOutput) override;
 
private:
  NvDsPostProcessStatus fillClassificationOutput(
    const std::vector<NvDsInferLayerInfo>& outputLayers,
    NvDsPostProcessClassificationOutput& output);
  bool parseAttributesFromSoftmaxLayers(
    std::vector<NvDsInferLayerInfo> const& outputLayersInfo,
    NvDsInferNetworkInfo const& networkInfo, float classifierThreshold,
    std::vector<NvDsPostProcessAttribute>& attrList, std::string& attrString);
 
  NvDsPostProcessObjectInfo m_ObjectHistory;
  float m_ClassifierThreshold = 0.51;
  const gchar *m_ClassifierType;
  uint32_t m_NumClasses = 0;
  NvDsPostProcessClassiferParseCustomFunc m_CustomClassifierParseFunc = nullptr;
};
 
#endif