cnstream/modules/inference2/src/infer_handler.hpp

/*************************************************************************
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 *  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
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 *     http://www.apache.org/licenses/LICENSE-2.0
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#ifndef MODULES_INFER_HANDLER_HPP_
#define MODULES_INFER_HANDLER_HPP_

#include <memory>
#include <string>

#include "inferencer2.hpp"

namespace cnstream {

class InferDataObserver;

/**
 * @brief for inference handler used to do inference based on infer_server.
 */
class InferHandlerImpl : public InferHandler {
 public:
  explicit InferHandlerImpl(Inferencer2* module, Infer2Param infer_params,
                            std::shared_ptr<VideoPostproc> post_processor, std::shared_ptr<VideoPreproc> pre_processor,
                            std::shared_ptr<ObjFilter> obj_filter)
      : InferHandler(module, infer_params, post_processor, pre_processor, obj_filter) {}

  virtual ~InferHandlerImpl();

  bool Open() override;
  void Close() override;

  int Process(CNFrameInfoPtr data, bool with_objs = false) override;

  void WaitTaskDone(const std::string& stream_id) override;

  void PostEvent(EventType e, const std::string& msg) { module_->PostEvent(e, msg); }

 private:
  bool LinkInferServer();

 private:
  std::unique_ptr<InferEngine> infer_server_ = nullptr;
  std::shared_ptr<InferDataObserver> data_observer_ = nullptr;
  InferEngineSession session_ = nullptr;
  InferPreprocessType scale_platform_ = InferPreprocessType::UNKNOWN;
};

inline void InferHandler::TransmitData(const CNFrameInfoPtr& data) {
  if (module_) module_->TransmitData(data);
}

}  // namespace cnstream

#endif  // MODULES_INFER_HANDLER_HPP_