svcore
1.9
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ 00002 00003 /* 00004 Sonic Visualiser 00005 An audio file viewer and annotation editor. 00006 Centre for Digital Music, Queen Mary, University of London. 00007 This file copyright 2006-2009 Chris Cannam and QMUL. 00008 00009 This program is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU General Public License as 00011 published by the Free Software Foundation; either version 2 of the 00012 License, or (at your option) any later version. See the file 00013 COPYING included with this distribution for more information. 00014 */ 00015 00016 #ifndef _MIDI_INPUT_H_ 00017 #define _MIDI_INPUT_H_ 00018 00019 #include <QObject> 00020 #include "MIDIEvent.h" 00021 00022 #include <vector> 00023 #include "base/RingBuffer.h" 00024 #include "base/FrameTimer.h" 00025 00026 class RtMidiIn; 00027 00028 class MIDIInput : public QObject 00029 { 00030 Q_OBJECT 00031 00032 public: 00033 MIDIInput(QString name, FrameTimer *timer); 00034 virtual ~MIDIInput(); 00035 00036 bool isOK() const { return m_rtmidi != 0; } 00037 00038 bool isEmpty() const { return getEventsAvailable() == 0; } 00039 int getEventsAvailable() const { return m_buffer.getReadSpace(); } 00040 MIDIEvent readEvent(); 00041 00042 signals: 00043 void eventsAvailable(); 00044 00045 protected: 00046 RtMidiIn *m_rtmidi; 00047 FrameTimer *m_frameTimer; 00048 00049 static void staticCallback(double, std::vector<unsigned char> *, void *); 00050 void callback(double, std::vector<unsigned char> *); 00051 00052 void postEvent(MIDIEvent); 00053 RingBuffer<MIDIEvent *> m_buffer; 00054 }; 00055 00056 #endif 00057