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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
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8 This program is free software; you can redistribute it and/or
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9 modify it under the terms of the GNU General Public License as
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10 published by the Free Software Foundation; either version 2 of the
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11 License, or (at your option) any later version. See the file
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12 COPYING included with this distribution for more information.
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13 */
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14
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15 #ifndef NOTE_DATA_H
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16 #define NOTE_DATA_H
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17
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18 #include <vector>
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19
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20 #include "base/Pitch.h"
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21
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22 struct NoteData
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23 {
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24 NoteData(sv_frame_t _start, sv_frame_t _dur, int _mp, int _vel) :
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25 start(_start), duration(_dur), midiPitch(_mp), frequency(0),
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26 isMidiPitchQuantized(true), velocity(_vel), channel(0) { };
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27
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28 sv_frame_t start; // audio sample frame
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29 sv_frame_t duration; // in audio sample frames
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30 int midiPitch; // 0-127
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31 float frequency; // Hz, to be used if isMidiPitchQuantized false
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32 bool isMidiPitchQuantized;
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33 int velocity; // MIDI-style 0-127
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34 int channel; // MIDI 0-15
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35
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36 float getFrequency() const {
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37 if (isMidiPitchQuantized) {
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38 return float(Pitch::getFrequencyForPitch(midiPitch));
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39 } else {
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40 return frequency;
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41 }
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42 }
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43 };
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44
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45 typedef std::vector<NoteData> NoteList;
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46
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47 class NoteExportable
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48 {
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49 public:
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50 virtual NoteList getNotes() const = 0;
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51 virtual NoteList getNotesWithin(sv_frame_t startFrame, sv_frame_t endFrame) const = 0;
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52 };
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53
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54 #endif
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