1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ 2 3 /* 4 Sonic Visualiser 5 An audio file viewer and annotation editor. 6 Centre for Digital Music, Queen Mary, University of London. 7 This file copyright 2006-2009 Chris Cannam and QMUL. 8 9 This program is free software; you can redistribute it and/or 10 modify it under the terms of the GNU General Public License as 11 published by the Free Software Foundation; either version 2 of the 12 License, or (at your option) any later version. See the file 13 COPYING included with this distribution for more information. 14 */ 15 16 #ifndef SV_MIDI_INPUT_H 17 #define SV_MIDI_INPUT_H 18 19 #include <QObject> 20 #include "MIDIEvent.h" 21 22 #include <vector> 23 #include "base/RingBuffer.h" 24 #include "base/FrameTimer.h" 25 26 class RtMidiIn; 27 28 class MIDIInput : public QObject 29 { 30 Q_OBJECT 31 32 public: 33 MIDIInput(QString name, FrameTimer *timer); 34 virtual ~MIDIInput(); 35 isOK()36 bool isOK() const { return m_rtmidi != 0; } 37 isEmpty()38 bool isEmpty() const { return getEventsAvailable() == 0; } getEventsAvailable()39 int getEventsAvailable() const { return m_buffer.getReadSpace(); } 40 MIDIEvent readEvent(); 41 42 signals: 43 void eventsAvailable(); 44 45 protected: 46 RtMidiIn *m_rtmidi; 47 FrameTimer *m_frameTimer; 48 49 static void staticCallback(double, std::vector<unsigned char> *, void *); 50 void callback(double, std::vector<unsigned char> *); 51 52 void postEvent(MIDIEvent); 53 RingBuffer<MIDIEvent *> m_buffer; 54 }; 55 56 #endif 57 58