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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 TEST_COLUMN_OP_H
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16 #define TEST_COLUMN_OP_H
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17
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18 #include "../ColumnOp.h"
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19
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20 #include <QObject>
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21 #include <QtTest>
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22 #include <QDir>
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23
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24 #include <iostream>
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25
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26 //#define REPORT 1
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27
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28 using namespace std;
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29
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30 class TestColumnOp : public QObject
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31 {
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32 Q_OBJECT
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33
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34 typedef ColumnOp C;
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35 typedef ColumnOp::Column Column;
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36 typedef vector<double> BinMapping;
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37
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38 #ifdef REPORT
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39 template <typename T>
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40 void report(vector<T> v) {
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41 cerr << "Vector is: [ ";
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42 for (int i = 0; i < int(v.size()); ++i) {
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43 if (i > 0) cerr << ", ";
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44 cerr << v[i];
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45 }
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46 cerr << " ]\n";
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47 }
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48 #else
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49 template <typename T>
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50 void report(vector<T> ) { }
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51 #endif
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52
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53 private slots:
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54 void applyGain() {
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55 QCOMPARE(C::applyGain({}, 1.0), Column());
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56 Column c { 1, 2, 3, -4, 5, 6 };
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57 Column actual(C::applyGain(c, 1.5));
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58 Column expected { 1.5, 3, 4.5, -6, 7.5, 9 };
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59 QCOMPARE(actual, expected);
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60 actual = C::applyGain(c, 1.0);
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61 QCOMPARE(actual, c);
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62 actual = C::applyGain(c, 0.0);
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63 expected = { 0, 0, 0, 0, 0, 0 };
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64 QCOMPARE(actual, expected);
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65 }
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66
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67 void fftScale() {
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68 QCOMPARE(C::fftScale({}, 2.0), Column());
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69 Column c { 1, 2, 3, -4, 5 };
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70 Column actual(C::fftScale(c, 8));
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71 Column expected { 0.25, 0.5, 0.75, -1, 1.25 };
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72 QCOMPARE(actual, expected);
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73 }
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74
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75 void isPeak_null() {
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76 QVERIFY(!C::isPeak({}, 0));
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77 QVERIFY(!C::isPeak({}, 1));
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78 QVERIFY(!C::isPeak({}, -1));
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79 }
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80
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81 void isPeak_obvious() {
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82 Column c { 0.4, 0.5, 0.3 };
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83 QVERIFY(!C::isPeak(c, 0));
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84 QVERIFY(C::isPeak(c, 1));
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85 QVERIFY(!C::isPeak(c, 2));
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86 }
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87
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88 void isPeak_edges() {
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89 Column c { 0.5, 0.4, 0.3 };
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90 QVERIFY(C::isPeak(c, 0));
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91 QVERIFY(!C::isPeak(c, 1));
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92 QVERIFY(!C::isPeak(c, 2));
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93 QVERIFY(!C::isPeak(c, 3));
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94 QVERIFY(!C::isPeak(c, -1));
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95 c = { 1.4, 1.5 };
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96 QVERIFY(!C::isPeak(c, 0));
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97 QVERIFY(C::isPeak(c, 1));
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98 }
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99
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100 void isPeak_flat() {
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101 Column c { 0.0, 0.0, 0.0 };
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102 QVERIFY(C::isPeak(c, 0));
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103 QVERIFY(!C::isPeak(c, 1));
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104 QVERIFY(!C::isPeak(c, 2));
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105 }
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106
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107 void isPeak_mixedSign() {
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108 Column c { 0.4, -0.5, -0.3, -0.6, 0.1, -0.3 };
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109 QVERIFY(C::isPeak(c, 0));
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110 QVERIFY(!C::isPeak(c, 1));
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111 QVERIFY(C::isPeak(c, 2));
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112 QVERIFY(!C::isPeak(c, 3));
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113 QVERIFY(C::isPeak(c, 4));
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114 QVERIFY(!C::isPeak(c, 5));
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115 }
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116
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117 void isPeak_duplicate() {
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118 Column c({ 0.5, 0.5, 0.4, 0.4 });
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119 QVERIFY(C::isPeak(c, 0));
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120 QVERIFY(!C::isPeak(c, 1));
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121 QVERIFY(!C::isPeak(c, 2));
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122 QVERIFY(!C::isPeak(c, 3));
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123 c = { 0.4, 0.4, 0.5, 0.5 };
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124 QVERIFY(C::isPeak(c, 0)); // counterintuitive but necessary
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125 QVERIFY(!C::isPeak(c, 1));
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126 QVERIFY(C::isPeak(c, 2));
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127 QVERIFY(!C::isPeak(c, 3));
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128 }
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129
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130 void peakPick() {
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131 QCOMPARE(C::peakPick({}), Column());
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132 Column c({ 0.5, 0.5, 0.4, 0.4 });
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133 QCOMPARE(C::peakPick(c), Column({ 0.5, 0.0, 0.0, 0.0 }));
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134 c = Column({ 0.4, -0.5, -0.3, -0.6, 0.1, -0.3 });
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135 QCOMPARE(C::peakPick(c), Column({ 0.4, 0.0, -0.3, 0.0, 0.1, 0.0 }));
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136 }
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137
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138 void normalize_null() {
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139 QCOMPARE(C::normalize({}, ColumnNormalization::None), Column());
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140 QCOMPARE(C::normalize({}, ColumnNormalization::Sum1), Column());
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141 QCOMPARE(C::normalize({}, ColumnNormalization::Max1), Column());
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142 QCOMPARE(C::normalize({}, ColumnNormalization::Hybrid), Column());
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143 }
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144
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145 void normalize_none() {
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146 Column c { 1, 2, 3, 4 };
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147 QCOMPARE(C::normalize(c, ColumnNormalization::None), c);
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148 }
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149
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150 void normalize_none_mixedSign() {
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151 Column c { 1, 2, -3, -4 };
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152 QCOMPARE(C::normalize(c, ColumnNormalization::None), c);
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153 }
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154
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155 void normalize_sum1() {
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156 Column c { 1, 2, 4, 3 };
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157 QCOMPARE(C::normalize(c, ColumnNormalization::Sum1),
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158 Column({ 0.1, 0.2, 0.4, 0.3 }));
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159 }
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160
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161 void normalize_sum1_mixedSign() {
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162 Column c { 1, 2, -4, -3 };
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163 QCOMPARE(C::normalize(c, ColumnNormalization::Sum1),
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164 Column({ 0.1, 0.2, -0.4, -0.3 }));
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165 }
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166
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167 void normalize_max1() {
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168 Column c { 4, 3, 2, 1 };
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169 QCOMPARE(C::normalize(c, ColumnNormalization::Max1),
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170 Column({ 1.0, 0.75, 0.5, 0.25 }));
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171 }
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172
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173 void normalize_max1_mixedSign() {
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174 Column c { -4, -3, 2, 1 };
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175 QCOMPARE(C::normalize(c, ColumnNormalization::Max1),
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176 Column({ -1.0, -0.75, 0.5, 0.25 }));
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177 }
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178
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179 void normalize_hybrid() {
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180 // with max == 99, log10(max+1) == 2 so scale factor will be 2/99
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181 Column c { 22, 44, 99, 66 };
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182 QCOMPARE(C::normalize(c, ColumnNormalization::Hybrid),
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183 Column({ 44.0/99.0, 88.0/99.0, 2.0, 132.0/99.0 }));
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184 }
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185
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186 void normalize_hybrid_mixedSign() {
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187 // with max == 99, log10(max+1) == 2 so scale factor will be 2/99
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188 Column c { 22, 44, -99, -66 };
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189 QCOMPARE(C::normalize(c, ColumnNormalization::Hybrid),
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190 Column({ 44.0/99.0, 88.0/99.0, -2.0, -132.0/99.0 }));
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191 }
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192
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193 void distribute_simple() {
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194 Column in { 1, 2, 3 };
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195 BinMapping binfory { 0.0, 0.5, 1.0, 1.5, 2.0, 2.5 };
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196 Column expected { 1, 1, 2, 2, 3, 3 };
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197 Column actual(C::distribute(in, 6, binfory, 0, false));
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198 report(actual);
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199 QCOMPARE(actual, expected);
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200 }
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201
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202 void distribute_simple_interpolated() {
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203 Column in { 1, 2, 3 };
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204 BinMapping binfory { 0.0, 0.5, 1.0, 1.5, 2.0, 2.5 };
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205 // There is a 0.5-bin offset from the distribution you might
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206 // expect, because this corresponds visually to the way that
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207 // bin values are duplicated upwards in simple_distribution.
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208 // It means that switching between interpolated and
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209 // non-interpolated views retains the visual position of each
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210 // bin peak as somewhere in the middle of the scale area for
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211 // that bin.
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212 Column expected { 1, 1, 1.5, 2, 2.5, 3 };
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213 Column actual(C::distribute(in, 6, binfory, 0, true));
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214 report(actual);
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215 QCOMPARE(actual, expected);
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216 }
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217
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218 void distribute_nonlinear() {
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219 Column in { 1, 2, 3 };
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220 BinMapping binfory { 0.0, 0.2, 0.5, 1.0, 2.0, 2.5 };
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221 Column expected { 1, 1, 1, 2, 3, 3 };
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222 Column actual(C::distribute(in, 6, binfory, 0, false));
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223 report(actual);
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224 QCOMPARE(actual, expected);
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225 }
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226
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227 void distribute_nonlinear_interpolated() {
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228 // See distribute_simple_interpolated
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229 Column in { 1, 2, 3 };
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230 BinMapping binfory { 0.0, 0.2, 0.5, 1.0, 2.0, 2.5 };
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231 Column expected { 1, 1, 1, 1.5, 2.5, 3 };
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232 Column actual(C::distribute(in, 6, binfory, 0, true));
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233 report(actual);
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234 QCOMPARE(actual, expected);
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235 }
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236
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237 void distribute_shrinking() {
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238 Column in { 4, 1, 2, 3, 5, 6 };
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239 BinMapping binfory { 0.0, 2.0, 4.0 };
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240 Column expected { 4, 3, 6 };
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241 Column actual(C::distribute(in, 3, binfory, 0, false));
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242 report(actual);
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243 QCOMPARE(actual, expected);
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244 }
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245
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246 void distribute_shrinking_interpolated() {
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247 // should be same as distribute_shrinking, we don't
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248 // interpolate when resizing down
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249 Column in { 4, 1, 2, 3, 5, 6 };
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250 BinMapping binfory { 0.0, 2.0, 4.0 };
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251 Column expected { 4, 3, 6 };
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252 Column actual(C::distribute(in, 3, binfory, 0, true));
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253 report(actual);
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254 QCOMPARE(actual, expected);
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255 }
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256
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257 void distribute_nonlinear_someshrinking_interpolated() {
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258 // But we *should* interpolate if the mapping involves
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259 // shrinking some bins but expanding others. See
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260 // distribute_simple_interpolated for note on 0.5 offset
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261 Column in { 4, 1, 2, 3, 5, 6 };
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262 BinMapping binfory { 0.0, 3.0, 4.0, 4.5 };
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263 Column expected { 4.0, 2.5, 4.0, 5.0 };
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264 Column actual(C::distribute(in, 4, binfory, 0, true));
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265 report(actual);
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266 QCOMPARE(actual, expected);
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267 binfory = BinMapping { 0.5, 1.0, 2.0, 5.0 };
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268 expected = { 4.0, 2.5, 1.5, 5.5 };
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269 actual = (C::distribute(in, 4, binfory, 0, true));
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270 report(actual);
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271 QCOMPARE(actual, expected);
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272 }
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273 };
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274
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275 #endif
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276
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