music_event_in_proxy.h

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/*
 *  music_event_in_proxy.h
 *
 *  This file is part of NEST.
 *
 *  Copyright (C) 2004 The NEST Initiative
 *
 *  NEST 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  NEST 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 NEST.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef MUSIC_EVENT_IN_PROXY_H
#define MUSIC_EVENT_IN_PROXY_H
 
// Generated includes:
#include "config.h"
 
#ifdef HAVE_MUSIC
 
// C++ includes:
#include <vector>
 
// Includes from nestkernel:
#include "connection.h"
#include "device_node.h"
#include "event.h"
#include "nest_types.h"
 
namespace nest
{
void register_music_event_in_proxy( const std::string& name );
 
/* BeginUserDocs: device, MUSIC, spike
 
Short description
+++++++++++++++++
 
A device which receives spikes from MUSIC
 
Description
+++++++++++
 
A ``music_event_in_proxy`` can be used to pass spikes to nodes within NEST
which are received from another application.
 
It uses the MUSIC library to receive spike events from other
applications. The ``music_event_in_proxy`` represents one channel on a port
to which MUSIC can connect an event source. The music_event_in_proxy can
be connected to local neurons or devices within NEST to receive
the events. Multiple ``music_in_proxies`` can be configured to listen
on the same port, but each channel can only listened to by a
single proxy.
 
This model is only available if NEST was compiled with MUSIC.
 
Parameters
++++++++++
 
The following properties are available in the status Dictionary:
 
============== ======== =======================================================
 port_name     string   The name of the MUSIC input port to listen to (default:
                        event_in)
 music_channel integer  The MUSIC global index on the input port to listen to
 registered    boolean  A bool indicating if the port has been already
                        registered with the corresponding MUSIC event handler
============== ======== =======================================================
 
The parameters port_name and music_channel can be set using SetStatus.
The acceptable latency of the MUSIC input port can be set using the
command SetAcceptableLatency.
 
See also
++++++++
 
SetAcceptableLatency, music_event_out_proxy, music_cont_in_proxy, music_message_in_proxy
 
Examples using this model
+++++++++++++++++++++++++
 
.. listexamples:: music_event_in_proxy
 
EndUserDocs */
 
class music_event_in_proxy : public DeviceNode
{
 
public:
  music_event_in_proxy();
  music_event_in_proxy( const music_event_in_proxy& );
 
  bool
  has_proxies() const
  {
    return false;
  }
  bool
  one_node_per_process() const
  {
    return true;
  }
 
  using Node::handle;
  using Node::handles_test_event;
 
  void handle( SpikeEvent& );
  size_t send_test_event( Node&, size_t, synindex, bool );
 
  void get_status( Dictionary& ) const;
  void set_status( const Dictionary& );
 
private:
  void init_buffers_();
  void pre_run_hook();
 
  void
  update( Time const&, const long, const long )
  {
  }
 
  // ------------------------------------------------------------
  struct State_;
 
  struct Parameters_
  {
    std::string port_name_;  
    long channel_;           
 
    Parameters_();  
 
    void get( Dictionary& ) const;
 
    void set( const Dictionary&, State_& );
  };
 
  // ------------------------------------------------------------
 
  struct State_
  {
    bool registered_;  
 
    State_();  
 
    void get( Dictionary& ) const;  
    void set( const Dictionary&, const Parameters_& );
  };
 
  // ------------------------------------------------------------
 
  Parameters_ P_;
  State_ S_;
};
 
inline size_t
music_event_in_proxy::send_test_event( Node& target, size_t receptor_type, synindex, bool )
{
  SpikeEvent e;
  e.set_sender( *this );
 
  return target.handles_test_event( e, receptor_type );
}
 
}  // namespace
 
#endif
 
#endif /* #ifndef MUSIC_EVENT_IN_PROXY_H */