.. _program_listing_file_processors_eventconverter_eventconverter.cpp:

Program Listing for File eventconverter.cpp
===========================================

|exhale_lsh| :ref:`Return to documentation for file <file_processors_eventconverter_eventconverter.cpp>` (``processors/eventconverter/eventconverter.cpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   // ---------------------------------------------------------------------
   // This file is part of falcon-core.
   //
   // Copyright (C) 2015, 2016, 2017 Neuro-Electronics Research Flanders
   //
   // Falcon-server is free software: you can redistribute it and/or modify
   // it under the terms of the GNU General Public License as published by
   // the Free Software Foundation, either version 3 of the License, or
   // (at your option) any later version.
   //
   // Falcon-server is distributed in the hope that it will be useful,
   // but WITHOUT ANY WARRANTY; without even the implied warranty of
   // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   // GNU General Public License for more details.
   //
   // You should have received a copy of the GNU General Public License
   // along with falcon-core. If not, see <http://www.gnu.org/licenses/>.
   // ---------------------------------------------------------------------
   
   #include "eventconverter.hpp"
   
   EventConverter::EventConverter() {
     add_option("event name", event_name_, "New event name after conversion");
     add_option("replace", replace_,
                "Either replace incoming events with new event name, or generate "
                "output events by appending incoming event and new event name.");
   }
   
   void EventConverter::CreatePorts() {
     data_in_port_ = create_input_port<EventType>(EventType::Capabilities(),
                                                  PortInPolicy(SlotRange(1)));
   
     data_out_port_ = create_output_port<EventType>(
         EventType::Capabilities(), EventType::Parameters(DEFAULT_EVENT),
         PortOutPolicy(SlotRange(1)));
   }
   
   void EventConverter::Process(ProcessingContext &context) {
     EventType::Data *data_in = nullptr;
     EventType::Data *data_out = nullptr;
   
     while (!context.terminated()) {
       if (!data_in_port_->slot(0)->RetrieveData(data_in)) {
         break;
       }
   
       data_out = data_out_port_->slot(0)->ClaimData(true);
       data_out->set_hardware_timestamp(data_in->hardware_timestamp());
   
       if (replace_()) {
         data_out->set_event(event_name_());
       } else {
         data_out->set_event(data_in->event() + event_name_());
       }
       data_in_port_->slot(0)->ReleaseData();
       data_out->set_source_timestamp();
       data_out_port_->slot(0)->PublishData();
     }
   }
   
   void EventConverter::Postprocess(ProcessingContext &context) {
     LOG(INFO) << name() << ". Streamed " << data_in_port_->slot(0)->status_read()
               << " events";
   }
   
   REGISTERPROCESSOR(EventConverter)