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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 #include "PreferencesDialog.h"
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17
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18 #include <QGridLayout>
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19 #include <QComboBox>
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20 #include <QCheckBox>
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21 #include <QGroupBox>
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22 #include <QDoubleSpinBox>
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23 #include <QLabel>
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24 #include <QPushButton>
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25 #include <QHBoxLayout>
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26 #include <QPainter>
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27 #include <QPainterPath>
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28 #include <QFont>
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29 #include <QString>
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30
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31 #include <fftw3.h>
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32
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33 #include "base/Preferences.h"
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34 #include "fileio/ConfigFile.h"
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35
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36 PreferencesDialog::PreferencesDialog(QWidget *parent, Qt::WFlags flags) :
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37 QDialog(parent, flags)
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38 {
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39 setWindowTitle(tr("Application Preferences"));
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40
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41 Preferences *prefs = Preferences::getInstance();
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42
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43 QGridLayout *grid = new QGridLayout;
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44 setLayout(grid);
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45
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46 QGroupBox *groupBox = new QGroupBox;
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47 groupBox->setTitle(tr("Sonic Visualiser Application Preferences"));
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48 grid->addWidget(groupBox, 0, 0);
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49
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50 QGridLayout *subgrid = new QGridLayout;
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51 groupBox->setLayout(subgrid);
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52
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53 // Create this first, as slots that get called from the ctor will
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54 // refer to it
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55 m_applyButton = new QPushButton(tr("Apply"));
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56
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57 // The WindowType enum is in rather a ragbag order -- reorder it here
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58 // in a more sensible order
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59 m_windows = new WindowType[9];
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60 m_windows[0] = HanningWindow;
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61 m_windows[1] = HammingWindow;
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62 m_windows[2] = BlackmanWindow;
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63 m_windows[3] = BlackmanHarrisWindow;
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64 m_windows[4] = NuttallWindow;
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65 m_windows[5] = GaussianWindow;
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66 m_windows[6] = ParzenWindow;
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67 m_windows[7] = BartlettWindow;
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68 m_windows[8] = RectangularWindow;
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69
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70 QComboBox *windowCombo = new QComboBox;
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71 int min, max, i;
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72 int window = prefs->getPropertyRangeAndValue("Window Type", &min, &max);
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73 m_windowType = window;
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74 int index = 0;
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75
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76 for (i = 0; i <= 8; ++i) {
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77 windowCombo->addItem(prefs->getPropertyValueLabel("Window Type",
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78 m_windows[i]));
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79 if (m_windows[i] == window) index = i;
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80 }
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81
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82 windowCombo->setCurrentIndex(index);
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83
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84 m_windowTimeExampleLabel = new QLabel;
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85 m_windowFreqExampleLabel = new QLabel;
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86
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87 connect(windowCombo, SIGNAL(currentIndexChanged(int)),
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88 this, SLOT(windowTypeChanged(int)));
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89 windowTypeChanged(index);
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90
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91 QCheckBox *smoothing = new QCheckBox;
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92 m_smoothSpectrogram = prefs->getSmoothSpectrogram();
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93 smoothing->setCheckState(m_smoothSpectrogram ?
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94 Qt::Checked : Qt::Unchecked);
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95
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96 connect(smoothing, SIGNAL(stateChanged(int)),
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97 this, SLOT(smoothSpectrogramChanged(int)));
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98
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99 QComboBox *propertyLayout = new QComboBox;
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100 int pl = prefs->getPropertyRangeAndValue("Property Box Layout", &min, &max);
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101 m_propertyLayout = pl;
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102
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103 for (i = min; i <= max; ++i) {
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104 propertyLayout->addItem(prefs->getPropertyValueLabel("Property Box Layout", i));
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105 }
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106
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107 propertyLayout->setCurrentIndex(pl);
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108
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109 connect(propertyLayout, SIGNAL(currentIndexChanged(int)),
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110 this, SLOT(propertyLayoutChanged(int)));
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111
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112 m_tuningFrequency = prefs->getTuningFrequency();
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113
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114 QDoubleSpinBox *frequency = new QDoubleSpinBox;
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115 frequency->setMinimum(100.0);
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116 frequency->setMaximum(5000.0);
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117 frequency->setSuffix(" Hz");
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118 frequency->setSingleStep(1);
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119 frequency->setValue(m_tuningFrequency);
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120 frequency->setDecimals(2);
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121
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122 connect(frequency, SIGNAL(valueChanged(double)),
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123 this, SLOT(tuningFrequencyChanged(double)));
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124
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125 int row = 0;
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126
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127 subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel
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128 ("Property Box Layout"))),
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129 row, 0);
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130 subgrid->addWidget(propertyLayout, row++, 1, 1, 2);
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131
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132 subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel
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133 ("Tuning Frequency"))),
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134 row, 0);
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135 subgrid->addWidget(frequency, row++, 1, 1, 2);
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136
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137 subgrid->addWidget(new QLabel(prefs->getPropertyLabel
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138 ("Smooth Spectrogram")),
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139 row, 0, 1, 2);
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140 subgrid->addWidget(smoothing, row++, 2);
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141
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142 subgrid->addWidget(new QLabel(tr("%1:").arg(prefs->getPropertyLabel
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143 ("Window Type"))),
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144 row, 0);
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145 subgrid->addWidget(windowCombo, row++, 1, 1, 2);
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146
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147 subgrid->addWidget(m_windowTimeExampleLabel, row, 1);
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148 subgrid->addWidget(m_windowFreqExampleLabel, row, 2);
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149
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150 QHBoxLayout *hbox = new QHBoxLayout;
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151 grid->addLayout(hbox, 1, 0);
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152
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153 QPushButton *ok = new QPushButton(tr("OK"));
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154 QPushButton *cancel = new QPushButton(tr("Cancel"));
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155 hbox->addStretch(10);
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156 hbox->addWidget(ok);
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157 hbox->addWidget(m_applyButton);
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158 hbox->addWidget(cancel);
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159 connect(ok, SIGNAL(clicked()), this, SLOT(okClicked()));
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160 connect(m_applyButton, SIGNAL(clicked()), this, SLOT(applyClicked()));
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161 connect(cancel, SIGNAL(clicked()), this, SLOT(cancelClicked()));
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162
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163 m_applyButton->setEnabled(false);
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164 }
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165
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166 PreferencesDialog::~PreferencesDialog()
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167 {
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168 std::cerr << "PreferencesDialog::~PreferencesDialog()" << std::endl;
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169
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170 delete[] m_windows;
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171 }
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172
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173 void
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174 PreferencesDialog::windowTypeChanged(int value)
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175 {
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176 int step = 24;
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177 int peak = 48;
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178 int w = step * 4, h = 64;
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179 WindowType type = m_windows[value];
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180 Window<float> windower = Window<float>(type, step * 2);
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181
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182 QPixmap timeLabel(w, h + 1);
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183 timeLabel.fill(Qt::white);
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184 QPainter timePainter(&timeLabel);
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185
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186 QPainterPath path;
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187
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188 path.moveTo(0, h - peak + 1);
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189 path.lineTo(w, h - peak + 1);
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190
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191 timePainter.setPen(Qt::gray);
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192 timePainter.setRenderHint(QPainter::Antialiasing, true);
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193 timePainter.drawPath(path);
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194
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195 path = QPainterPath();
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196
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197 float acc[w];
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198 for (int i = 0; i < w; ++i) acc[i] = 0.f;
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199 for (int j = 0; j < 3; ++j) {
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200 for (int i = 0; i < step * 2; ++i) {
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201 acc[j * step + i] += windower.getValue(i);
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202 }
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203 }
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204 for (int i = 0; i < w; ++i) {
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205 int y = h - int(peak * acc[i] + 0.001) + 1;
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206 if (i == 0) path.moveTo(i, y);
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207 else path.lineTo(i, y);
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208 }
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209
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210 timePainter.drawPath(path);
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211 timePainter.setRenderHint(QPainter::Antialiasing, false);
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212
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213 path = QPainterPath();
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214
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215 timePainter.setPen(Qt::black);
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216
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217 for (int i = 0; i < step * 2; ++i) {
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218 int y = h - int(peak * windower.getValue(i) + 0.001) + 1;
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219 if (i == 0) path.moveTo(i + step, float(y));
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220 else path.lineTo(i + step, float(y));
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221 }
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222
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223 if (type == RectangularWindow) {
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224 timePainter.drawPath(path);
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225 path = QPainterPath();
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226 }
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227
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228 timePainter.setRenderHint(QPainter::Antialiasing, true);
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229 path.addRect(0, 0, w, h + 1);
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230 timePainter.drawPath(path);
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231
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232 QFont font;
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233 font.setPixelSize(10);
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234 font.setItalic(true);
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235 timePainter.setFont(font);
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236 QString label = tr("V / time");
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237 timePainter.drawText(w - timePainter.fontMetrics().width(label) - 4,
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238 timePainter.fontMetrics().ascent() + 1, label);
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239
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240 m_windowTimeExampleLabel->setPixmap(timeLabel);
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241
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242 int fw = 100;
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243
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244 QPixmap freqLabel(fw, h + 1);
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245 freqLabel.fill(Qt::white);
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246 QPainter freqPainter(&freqLabel);
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247 path = QPainterPath();
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248
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249 size_t fftsize = 512;
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250
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251 float *input = (float *)fftwf_malloc(fftsize * sizeof(float));
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252 fftwf_complex *output =
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253 (fftwf_complex *)fftwf_malloc(fftsize * sizeof(fftwf_complex));
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254 fftwf_plan plan = fftwf_plan_dft_r2c_1d(fftsize, input, output,
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255 FFTW_ESTIMATE);
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256 for (int i = 0; i < fftsize; ++i) input[i] = 0.f;
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257 for (int i = 0; i < step * 2; ++i) {
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258 input[fftsize/2 - step + i] = windower.getValue(i);
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259 }
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260
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261 fftwf_execute(plan);
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262 fftwf_destroy_plan(plan);
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263
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264 float maxdb = 0.f;
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265 float mindb = 0.f;
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266 bool first = true;
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267 for (int i = 0; i < fftsize/2; ++i) {
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268 float power = output[i][0] * output[i][0] + output[i][1] * output[i][1];
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269 float db = mindb;
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270 if (power > 0) {
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271 db = 20 * log10(power);
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272 if (first || db > maxdb) maxdb = db;
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273 if (first || db < mindb) mindb = db;
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274 first = false;
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275 }
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276 }
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277
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278 if (mindb > -80.f) mindb = -80.f;
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279
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280 // -- no, don't use the actual mindb -- it's easier to compare
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281 // plots with a fixed min value
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282 mindb = -170.f;
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283
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284 float maxval = maxdb + -mindb;
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285
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286 float ly = h - ((-80.f + -mindb) / maxval) * peak + 1;
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287
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288 path.moveTo(0, h - peak + 1);
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289 path.lineTo(fw, h - peak + 1);
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290
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291 freqPainter.setPen(Qt::gray);
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292 freqPainter.setRenderHint(QPainter::Antialiasing, true);
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293 freqPainter.drawPath(path);
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294
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295 path = QPainterPath();
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296 freqPainter.setPen(Qt::black);
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297
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298 // std::cerr << "maxdb = " << maxdb << ", mindb = " << mindb << ", maxval = " <<maxval << std::endl;
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299
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300 for (int i = 0; i < fftsize/2; ++i) {
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301 float power = output[i][0] * output[i][0] + output[i][1] * output[i][1];
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302 float db = 20 * log10(power);
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303 float val = db + -mindb;
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304 if (val < 0) val = 0;
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305 float norm = val / maxval;
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306 float x = (fw / float(fftsize/2)) * i;
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307 float y = h - norm * peak + 1;
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308 if (i == 0) path.moveTo(x, y);
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309 else path.lineTo(x, y);
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310 }
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311
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312 freqPainter.setRenderHint(QPainter::Antialiasing, true);
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313 path.addRect(0, 0, fw, h + 1);
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314 freqPainter.drawPath(path);
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315
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316 fftwf_free(input);
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317 fftwf_free(output);
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318
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319 freqPainter.setFont(font);
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320 label = tr("dB / freq");
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321 freqPainter.drawText(fw - freqPainter.fontMetrics().width(label) - 4,
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322 freqPainter.fontMetrics().ascent() + 1, label);
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323
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324 m_windowFreqExampleLabel->setPixmap(freqLabel);
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325
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326 m_windowType = type;
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327 m_applyButton->setEnabled(true);
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328 }
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329
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330 void
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331 PreferencesDialog::smoothSpectrogramChanged(int state)
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332 {
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333 m_smoothSpectrogram = (state == Qt::Checked);
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334 m_applyButton->setEnabled(true);
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335 }
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336
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337 void
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338 PreferencesDialog::propertyLayoutChanged(int layout)
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339 {
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340 m_propertyLayout = layout;
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341 m_applyButton->setEnabled(true);
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342 }
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343
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344 void
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345 PreferencesDialog::tuningFrequencyChanged(double freq)
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346 {
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347 m_tuningFrequency = freq;
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348 m_applyButton->setEnabled(true);
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349 }
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350
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351 void
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352 PreferencesDialog::okClicked()
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353 {
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354 applyClicked();
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355 Preferences::getInstance()->getConfigFile()->commit();
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356 accept();
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357 }
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358
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359 void
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360 PreferencesDialog::applyClicked()
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361 {
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362 Preferences *prefs = Preferences::getInstance();
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363 prefs->setWindowType(WindowType(m_windowType));
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364 prefs->setSmoothSpectrogram(m_smoothSpectrogram);
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365 prefs->setPropertyBoxLayout(Preferences::PropertyBoxLayout
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Chris@0
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366 (m_propertyLayout));
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Chris@0
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367 prefs->setTuningFrequency(m_tuningFrequency);
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Chris@0
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368 m_applyButton->setEnabled(false);
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Chris@0
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369 }
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Chris@0
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370
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Chris@0
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371 void
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Chris@0
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372 PreferencesDialog::cancelClicked()
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Chris@0
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373 {
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Chris@0
|
374 reject();
|
Chris@0
|
375 }
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Chris@0
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376
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