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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 2007 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 SV_PATH_MODEL_H
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17 #define SV_PATH_MODEL_H
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18
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19 #include "Model.h"
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20 #include "DeferredNotifier.h"
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21 #include "base/RealTime.h"
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22 #include "base/BaseTypes.h"
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23
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24 #include "base/XmlExportable.h"
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25 #include "base/RealTime.h"
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26
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27 #include <QStringList>
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28 #include <set>
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29
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30 struct PathPoint
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31 {
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32 PathPoint(sv_frame_t _frame) :
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33 frame(_frame), mapframe(_frame) { }
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34 PathPoint(sv_frame_t _frame, sv_frame_t _mapframe) :
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35 frame(_frame), mapframe(_mapframe) { }
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36
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37 sv_frame_t frame;
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38 sv_frame_t mapframe;
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39
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40 void toXml(QTextStream &stream, QString indent = "",
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41 QString extraAttributes = "") const {
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42 stream << QString("%1<point frame=\"%2\" mapframe=\"%3\" %4/>\n")
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43 .arg(indent).arg(frame).arg(mapframe).arg(extraAttributes);
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44 }
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45
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46 QString toDelimitedDataString(QString delimiter, DataExportOptions,
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47 sv_samplerate_t sampleRate) const {
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48 QStringList list;
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49 list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
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50 list << QString("%1").arg(mapframe);
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51 return list.join(delimiter);
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52 }
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53
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54 bool operator<(const PathPoint &p2) const {
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55 if (frame != p2.frame) return frame < p2.frame;
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56 return mapframe < p2.mapframe;
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57 }
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58 };
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59
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60 //!!! pretty sure there is no good reason for this to be a model any
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61 //!!! more - it used to use implementation inheritance from
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62 //!!! SparseModel but that's no longer a thing. Should just be a
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63 //!!! simple container now, to be passed around by value/reference
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64 //!!! rather than on heap
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65
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66 class PathModel : public Model
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67 {
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68 public:
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69 typedef std::set<PathPoint> PointList;
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70
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71 PathModel(sv_samplerate_t sampleRate,
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72 int resolution,
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73 bool notifyOnAdd = true) :
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74 m_sampleRate(sampleRate),
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75 m_resolution(resolution),
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76 m_notifier(this,
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77 notifyOnAdd ?
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78 DeferredNotifier::NOTIFY_ALWAYS :
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79 DeferredNotifier::NOTIFY_DEFERRED),
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80 m_completion(100),
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81 m_start(0),
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82 m_end(0) {
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83 }
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84
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85 QString getTypeName() const override { return tr("Path"); }
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86 bool isSparse() const override { return true; }
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87 bool isOK() const override { return true; }
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88
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89 sv_frame_t getStartFrame() const override {
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90 return m_start;
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91 }
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92 sv_frame_t getTrueEndFrame() const override {
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93 return m_end;
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94 }
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95
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96 sv_samplerate_t getSampleRate() const override { return m_sampleRate; }
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97 int getResolution() const { return m_resolution; }
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98
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99 int getCompletion() const override { return m_completion; }
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100
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101 void setCompletion(int completion, bool update = true) {
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102
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103 { QMutexLocker locker(&m_mutex);
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104 if (m_completion == completion) return;
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105 m_completion = completion;
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106 }
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107
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108 if (update) {
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109 m_notifier.makeDeferredNotifications();
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110 }
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111
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112 emit completionChanged();
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113
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114 if (completion == 100) {
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115 // henceforth:
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116 m_notifier.switchMode(DeferredNotifier::NOTIFY_ALWAYS);
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117 emit modelChanged();
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118 }
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119 }
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120
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121 /**
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122 * Query methods.
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123 */
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124 int getPointCount() const {
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125 return int(m_points.size());
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126 }
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127 const PointList &getPoints() const {
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128 return m_points;
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129 }
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130
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131 /**
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132 * Editing methods.
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133 */
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134 void add(PathPoint p) {
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135
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136 { QMutexLocker locker(&m_mutex);
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137 m_points.insert(p);
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138
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139 if (m_start == m_end) {
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140 m_start = p.frame;
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141 m_end = m_start + m_resolution;
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142 } else {
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143 if (p.frame < m_start) {
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144 m_start = p.frame;
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145 }
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146 if (p.frame + m_resolution > m_end) {
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147 m_end = p.frame + m_resolution;
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148 }
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149 }
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150 }
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151
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152 m_notifier.update(p.frame, m_resolution);
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153 }
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154
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155 void remove(PathPoint p) {
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156 { QMutexLocker locker(&m_mutex);
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157 m_points.erase(p);
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158 }
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159
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160 emit modelChangedWithin(p.frame, p.frame + m_resolution);
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161 }
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162
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163 void clear() {
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164 { QMutexLocker locker(&m_mutex);
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165 m_start = m_end = 0;
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166 m_points.clear();
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167 }
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168 }
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169
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170 /**
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171 * XmlExportable methods.
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172 */
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173 void toXml(QTextStream &out,
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174 QString indent = "",
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175 QString extraAttributes = "") const override {
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176
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177 // Our dataset doesn't have its own export ID, we just use
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178 // ours. Actually any model could do that, since datasets
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179 // aren't in the same id-space as models when re-read
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180
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181 Model::toXml
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182 (out,
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183 indent,
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184 QString("type=\"sparse\" dimensions=\"2\" resolution=\"%1\" "
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185 "notifyOnAdd=\"%2\" dataset=\"%3\" subtype=\"path\" %4")
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186 .arg(m_resolution)
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187 .arg("true") // always true after model reaches 100% -
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188 // subsequent points are always notified
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189 .arg(getExportId())
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190 .arg(extraAttributes));
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191
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192 out << indent << QString("<dataset id=\"%1\" dimensions=\"2\">\n")
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193 .arg(getExportId());
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194
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195 for (PathPoint p: m_points) {
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196 p.toXml(out, indent + " ", "");
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197 }
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198
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199 out << indent << "</dataset>\n";
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200 }
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201
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202 QString toDelimitedDataString(QString delimiter,
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203 DataExportOptions,
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204 sv_frame_t startFrame,
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205 sv_frame_t duration) const override {
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206
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207 QString s;
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208 for (PathPoint p: m_points) {
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209 if (p.frame < startFrame) continue;
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210 if (p.frame >= startFrame + duration) break;
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211 s += QString("%1%2%3\n")
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212 .arg(p.frame)
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213 .arg(delimiter)
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214 .arg(p.mapframe);
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215 }
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216
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217 return s;
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218 }
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219
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220 protected:
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221 sv_samplerate_t m_sampleRate;
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222 int m_resolution;
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223
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224 DeferredNotifier m_notifier;
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225 int m_completion;
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226
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227 sv_frame_t m_start;
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228 sv_frame_t m_end;
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229 PointList m_points;
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230
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231 mutable QMutex m_mutex;
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232 };
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233
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234
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235 #endif
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