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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 _SPARSE_TIME_VALUE_MODEL_H_
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17 #define _SPARSE_TIME_VALUE_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 * Time/value point type for use in a SparseModel or SparseValueModel.
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25 * With this point type, the model basically represents a wiggly-line
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26 * plot with points at arbitrary intervals of the model resolution.
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27 */
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28
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29 struct TimeValuePoint
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30 {
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31 public:
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32 TimeValuePoint(long _frame) : frame(_frame), value(0.0f) { }
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33 TimeValuePoint(long _frame, float _value, QString _label) :
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34 frame(_frame), value(_value), label(_label) { }
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35
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36 int getDimensions() const { return 2; }
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37
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38 long frame;
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39 float value;
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40 QString label;
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41
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42 QString getLabel() const { return label; }
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43
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44 void toXml(QTextStream &stream, QString indent = "",
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45 QString extraAttributes = "") const
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46 {
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47 stream << QString("%1<point frame=\"%2\" value=\"%3\" label=\"%4\" %5/>\n")
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48 .arg(indent).arg(frame).arg(value).arg(label).arg(extraAttributes);
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49 }
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50
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51 QString toDelimitedDataString(QString delimiter, size_t sampleRate) const
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52 {
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53 QStringList list;
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54 list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
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55 list << QString("%1").arg(value);
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56 if (label != "") list << label;
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57 return list.join(delimiter);
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58 }
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59
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60 struct Comparator {
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61 bool operator()(const TimeValuePoint &p1,
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62 const TimeValuePoint &p2) const {
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63 if (p1.frame != p2.frame) return p1.frame < p2.frame;
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64 if (p1.value != p2.value) return p1.value < p2.value;
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65 return p1.label < p2.label;
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66 }
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67 };
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68
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69 struct OrderComparator {
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70 bool operator()(const TimeValuePoint &p1,
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71 const TimeValuePoint &p2) const {
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72 return p1.frame < p2.frame;
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73 }
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74 };
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75 };
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76
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77
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78 class SparseTimeValueModel : public SparseValueModel<TimeValuePoint>
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79 {
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80 public:
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81 SparseTimeValueModel(size_t sampleRate, size_t resolution,
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82 bool notifyOnAdd = true) :
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83 SparseValueModel<TimeValuePoint>(sampleRate, resolution,
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84 notifyOnAdd)
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85 {
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86 PlayParameterRepository::getInstance()->addModel(this);
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87 }
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88
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89 SparseTimeValueModel(size_t sampleRate, size_t resolution,
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90 float valueMinimum, float valueMaximum,
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91 bool notifyOnAdd = true) :
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92 SparseValueModel<TimeValuePoint>(sampleRate, resolution,
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93 valueMinimum, valueMaximum,
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94 notifyOnAdd)
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95 {
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96 PlayParameterRepository::getInstance()->addModel(this);
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97 }
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98
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99 QString getTypeName() const { return tr("Sparse Time-Value"); }
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100 };
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101
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102
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103 #endif
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104
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105
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106
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