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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 Chris Cannam.
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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 _NOTE_MODEL_H_
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17 #define _NOTE_MODEL_H_
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18
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19 #include "SparseValueModel.h"
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20 #include "base/PlayParameterRepository.h"
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21 #include "base/RealTime.h"
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22
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23 /**
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24 * Note type for use in a SparseModel or SparseValueModel. All we
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25 * mean by a "note" is something that has an onset time, a single
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26 * value, and a duration. Like other points, it can also have a
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27 * label. With this point type, the model can be thought of as
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28 * representing a simple MIDI-type piano roll, except that the y
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29 * coordinates (values) do not have to be discrete integers.
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30 */
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31
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32 struct Note
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33 {
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34 public:
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35 Note(long _frame) : frame(_frame), value(0.0f), duration(0) { }
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36 Note(long _frame, float _value, size_t _duration, QString _label) :
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37 frame(_frame), value(_value), duration(_duration), label(_label) { }
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38
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39 int getDimensions() const { return 3; }
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40
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41 long frame;
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42 float value;
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43 size_t duration;
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44 QString label;
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45
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46 QString toXmlString(QString indent = "",
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47 QString extraAttributes = "") const
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48 {
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49 return QString("%1<point frame=\"%2\" value=\"%3\" duration=\"%4\" label=\"%5\" %6/>\n")
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50 .arg(indent).arg(frame).arg(value).arg(duration).arg(label).arg(extraAttributes);
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51 }
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52
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53 QString toDelimitedDataString(QString delimiter, size_t sampleRate) const
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54 {
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55 QStringList list;
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56 list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
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57 list << QString("%1").arg(value);
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58 list << QString("%1").arg(duration);
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59 list << label;
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60 return list.join(delimiter);
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61 }
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62
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63 struct Comparator {
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64 bool operator()(const Note &p1,
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65 const Note &p2) const {
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66 if (p1.frame != p2.frame) return p1.frame < p2.frame;
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67 if (p1.value != p2.value) return p1.value < p2.value;
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68 if (p1.duration != p2.duration) return p1.duration < p2.duration;
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69 return p1.label < p2.label;
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70 }
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71 };
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72
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73 struct OrderComparator {
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74 bool operator()(const Note &p1,
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75 const Note &p2) const {
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76 return p1.frame < p2.frame;
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77 }
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78 };
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79 };
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80
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81
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82 class NoteModel : public SparseValueModel<Note>
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83 {
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84 public:
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85 NoteModel(size_t sampleRate, size_t resolution,
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86 bool notifyOnAdd = true) :
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87 SparseValueModel<Note>(sampleRate, resolution,
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88 notifyOnAdd),
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89 m_valueQuantization(0)
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90 {
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91 PlayParameterRepository::getInstance()->addModel(this);
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92 }
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93
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94 NoteModel(size_t sampleRate, size_t resolution,
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95 float valueMinimum, float valueMaximum,
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96 bool notifyOnAdd = true) :
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97 SparseValueModel<Note>(sampleRate, resolution,
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98 valueMinimum, valueMaximum,
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99 notifyOnAdd),
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100 m_valueQuantization(0)
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101 {
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102 PlayParameterRepository::getInstance()->addModel(this);
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103 }
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104
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105 float getValueQuantization() const { return m_valueQuantization; }
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106 void setValueQuantization(float q) { m_valueQuantization = q; }
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107
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108 /**
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109 * Notes have a duration, so this returns all points that span any
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110 * of the given range (as well as the usual additional few before
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111 * and after). Consequently this can be very slow (optimised data
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112 * structures still to be done!).
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113 */
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114 virtual PointList getPoints(long start, long end) const;
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115
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116 /**
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117 * Notes have a duration, so this returns all points that span the
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118 * given frame. Consequently this can be very slow (optimised
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119 * data structures still to be done!).
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120 */
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121 virtual PointList getPoints(long frame) const;
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122
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123 virtual QString toXmlString(QString indent = "",
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124 QString extraAttributes = "") const
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125 {
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126 return SparseValueModel<Note>::toXmlString
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127 (indent,
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128 QString("%1 valueQuantization=\"%2\"")
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129 .arg(extraAttributes).arg(m_valueQuantization));
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130 }
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131
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132 protected:
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133 float m_valueQuantization;
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134 };
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135
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136 #endif
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