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qmidinetAlsaMidiDevice.h

// qmidinetAlsaMidiDevice.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 __qmidinetAlsaMidiDevice_h
#define __qmidinetAlsaMidiDevice_h

#include "qmidinetAbout.h"

#ifdef CONFIG_ALSA_MIDI

#include <stdio.h>
#include <stdlib.h>

#include <alsa/asoundlib.h>

#include <QObject>
#include <QString>


//----------------------------------------------------------------------------
// qmidinetAlsaMidiDevice -- MIDI interface object.

class qmidinetAlsaMidiDevice : public QObject
{
      Q_OBJECT

public:

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

      // Destructor.
      ~qmidinetAlsaMidiDevice();

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

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

      // Device termination method.
      void close();

      // MIDI event capture method.
      void capture(snd_seq_event_t *pEv);

      // 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);

private:

      // Instance variables,
      int m_nports;

      // Instance variables.
      snd_seq_t *m_pAlsaSeq;
      int  m_iAlsaClient;
      int *m_piAlsaPort;

      snd_midi_event_t **m_ppAlsaEncoder;
      snd_midi_event_t  *m_pAlsaDecoder;

      // Network receiver thread.
      class qmidinetAlsaMidiThread *m_pRecvThread;

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


#endif      // CONFIG_ALSA_MIDI

#endif      // __qmidinetAlsaMidiDevice_h

// end of qmidinetAlsaMidiDevice.h

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