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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Sonic Visualiser
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5 An audio file viewer and annotation editor.
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6 Centre for Digital Music, Queen Mary, University of London.
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7 This file copyright 2006-2009 Chris Cannam and QMUL.
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8
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9 This program is free software; you can redistribute it and/or
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10 modify it under the terms of the GNU General Public License as
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11 published by the Free Software Foundation; either version 2 of the
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12 License, or (at your option) any later version. See the file
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13 COPYING included with this distribution for more information.
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14 */
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15
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16 #ifndef _MIDI_INPUT_H_
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17 #define _MIDI_INPUT_H_
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18
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19 #include <QObject>
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20 #include "MIDIEvent.h"
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21
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22 #include <vector>
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23 #include "base/RingBuffer.h"
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24 #include "base/FrameTimer.h"
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25
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26 class RtMidiIn;
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27
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28 class MIDIInput : public QObject
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29 {
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30 Q_OBJECT
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31
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32 public:
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33 MIDIInput(QString name, FrameTimer *timer);
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34 virtual ~MIDIInput();
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35
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36 bool isOK() const { return m_rtmidi != 0; }
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37
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38 bool isEmpty() const { return getEventsAvailable() == 0; }
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39 int getEventsAvailable() const { return m_buffer.getReadSpace(); }
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40 MIDIEvent readEvent();
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41
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42 signals:
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43 void eventsAvailable();
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44
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45 protected:
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46 RtMidiIn *m_rtmidi;
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47 FrameTimer *m_frameTimer;
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48
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49 static void staticCallback(double, std::vector<unsigned char> *, void *);
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50 void callback(double, std::vector<unsigned char> *);
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51
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52 void postEvent(MIDIEvent);
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53 RingBuffer<MIDIEvent *> m_buffer;
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54 };
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55
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56 #endif
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57
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