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qmidinetUdpDevice.h

// qmidinetUdpDevice.h
//
/****************************************************************************
   Copyright (C) 2010, rncbc aka Rui Nuno Capela. All rights reserved.

   This program 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.

   This program 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 this program; if not, write to the Free Software Foundation, Inc.,
   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

*****************************************************************************/

#ifndef __qmidinetUdpDevice_h
#define __qmidinetUdpDevice_h

#include <stdio.h>

#if defined(WIN32)
#include <winsock.h>
#else
#include <arpa/inet.h>
#include <net/if.h>
#endif

#include <QObject>
#include <QString>


//----------------------------------------------------------------------------
// qmidinetUdpDevice -- Network interface device (UDP/IP).

class qmidinetUdpDevice : public QObject
{
      Q_OBJECT

public:

      // Constructor.
      qmidinetUdpDevice(QObject *pParent = NULL);

      // Destructor.
      ~qmidinetUdpDevice();

      // Kind of singleton reference.
      static qmidinetUdpDevice *getInstance();

      // Device initialization method.
      bool open(const QString& sInterface, int iUdpPort = 21928, int iNumPorts = 1);

      // Device termination method.
      void close();

      // Data transmission methods.
      bool sendData(unsigned char *data, unsigned short len, int port = 0) const;
      void recvData(unsigned char *data, unsigned short len, int port = 0);

signals:

      // Received data signal.
      void received(const QByteArray& data, int port);

public slots:

      // Receive data slot.
      void receive(const QByteArray& data, int port);

protected:

      // Get interface address from supplied name.
      static bool get_address(int sock, struct in_addr *iaddr, const char *ifname);

private:

      // Instance variables,
      int  m_nports;

      int *m_sockin;
      int *m_sockout;

      struct sockaddr_in *m_addrout;

      // Network receiver thread.
      class qmidinetUdpDeviceThread *m_pRecvThread;

      // Kind-of singleton reference.
      static qmidinetUdpDevice *g_pDevice;
};


#endif      // __qmidinetUdpDevice_h


// end of qmidinetUdpDevice.h

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