.. _program_listing_file_processors_event2state_event2state.cpp:

Program Listing for File event2state.cpp
========================================

|exhale_lsh| :ref:`Return to documentation for file <file_processors_event2state_event2state.cpp>` (``processors/event2state/event2state.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 "event2state.hpp"
   
   Event2State::Event2State() : IProcessor() {
     add_option("target event", target_event_, "The target event that sets the state to true");
   }
   
   void Event2State::CreatePorts() {
     data_in_port_ = create_input_port<EventType>(
         EVENTDATA, EventType::Capabilities(), PortInPolicy(SlotRange(1, 256)));
   
     data_out_port_ = create_output_port<EventType>(
         EVENTDATA, EventType::Capabilities(),
         EventType::Parameters(target_event_().event()),
         PortOutPolicy(SlotRange(1)));
   
     enabled_ = create_broadcaster_state(
         "enabled", false, Permission::READ);
   }
   
   void Event2State::Process(ProcessingContext &context) {
     EventType::Data *data_in = nullptr;
     EventType::Data *data_out;
   
     while (!context.terminated()) {
       if (!data_in_port_->slot(0)->RetrieveData(data_in)) {
         break;
       }
       ++event_counter_.all_received;
       if (*data_in == target_event_()){
         ++event_counter_.target;
         LOG_IF(INFO, enabled_->exchange(true)) << name() << ". Mode True.";
         enabled_->set(true);
   
       } else {
         ++event_counter_.non_target;
         LOG_IF(DEBUG, enabled_->exchange(true)) << name() << ". Mode False.";
         enabled_->set(false);
       }
       
   
       data_out = data_out_port_->slot(0)->ClaimData(false);
       data_out->set_source_timestamp();
       data_out->set_hardware_timestamp(data_in->hardware_timestamp());
       data_out->set_event(target_event_());
       data_out_port_->slot(0)->PublishData();
   
       data_in_port_->slot(0)->ReleaseData();
     }
   }
   
   void Event2State::Postprocess(ProcessingContext &context) {
     log_and_reset_counters(data_in_port_->name(), event_counter_);
   }
   
   void Event2State::log_and_reset_counters(std::string port_name,
                                         EventCounter &counter) {
     auto msg = ". '" + port_name + "' counters.\n\t\t\t\t" +
                std::to_string(counter.all_received) +
                " events received.\n\t\t\t\t" + std::to_string(counter.target) +
                " target events received.\n\t\t\t\t" +
                std::to_string(counter.non_target) + " non-target events received";
     if (counter.consistent_counters()) {
       LOG(INFO) << name() << msg << ". Counters are consistent.";
     } else {
       LOG(WARNING) << name() << ". Counters are inconsistent.";
     }
   
     counter.reset();
   }
   
   REGISTERPROCESSOR(Event2State)