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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 2009 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 _FRAME_TIMER_H_
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17 #define _FRAME_TIMER_H_
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18
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19 /**
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20 * A trivial interface for things that permit retrieving "the current
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21 * frame". Implementations of this interface are used, for example,
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22 * for timestamping incoming MIDI events when tapping to MIDI.
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23 */
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24
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25 class FrameTimer
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26 {
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27 public:
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28 virtual unsigned long getFrame() const = 0;
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29 };
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30
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31 #endif
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