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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 and 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 #include "FeatureExtractionPluginFactory.h"
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17 #include "PluginIdentifier.h"
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18
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19 #include "vamp/vamp.h"
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20 #include "vamp-sdk/PluginHostAdapter.h"
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21
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22 #include "system/System.h"
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23
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24 #include <QDir>
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25 #include <QFile>
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26 #include <QFileInfo>
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27 #include <QTextStream>
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28
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29 #include <iostream>
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30
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31 //#define DEBUG_PLUGIN_SCAN_AND_INSTANTIATE 1
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32
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33 static FeatureExtractionPluginFactory *_nativeInstance = 0;
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34
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35 FeatureExtractionPluginFactory *
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36 FeatureExtractionPluginFactory::instance(QString pluginType)
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37 {
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38 if (pluginType == "vamp") {
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39 if (!_nativeInstance) {
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40 // std::cerr << "FeatureExtractionPluginFactory::instance(" << pluginType.toStdString()
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41 // << "): creating new FeatureExtractionPluginFactory" << std::endl;
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42 _nativeInstance = new FeatureExtractionPluginFactory();
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43 }
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44 return _nativeInstance;
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45 }
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46
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47 else return 0;
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48 }
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49
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50 FeatureExtractionPluginFactory *
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51 FeatureExtractionPluginFactory::instanceFor(QString identifier)
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52 {
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53 QString type, soName, label;
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54 PluginIdentifier::parseIdentifier(identifier, type, soName, label);
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55 return instance(type);
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56 }
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57
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58 std::vector<QString>
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59 FeatureExtractionPluginFactory::getPluginPath()
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60 {
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61 if (!m_pluginPath.empty()) return m_pluginPath;
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62
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63 std::vector<std::string> p = Vamp::PluginHostAdapter::getPluginPath();
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64 for (size_t i = 0; i < p.size(); ++i) m_pluginPath.push_back(p[i].c_str());
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65 return m_pluginPath;
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66 }
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67
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68 std::vector<QString>
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69 FeatureExtractionPluginFactory::getAllPluginIdentifiers()
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70 {
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71 FeatureExtractionPluginFactory *factory;
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72 std::vector<QString> rv;
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73
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74 factory = instance("vamp");
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75 if (factory) {
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76 std::vector<QString> tmp = factory->getPluginIdentifiers();
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77 for (size_t i = 0; i < tmp.size(); ++i) {
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78 rv.push_back(tmp[i]);
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79 }
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80 }
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81
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82 // Plugins can change the locale, revert it to default.
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83 setlocale(LC_ALL, "C");
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84 return rv;
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85 }
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86
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87 std::vector<QString>
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88 FeatureExtractionPluginFactory::getPluginIdentifiers()
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89 {
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90 std::vector<QString> rv;
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91 std::vector<QString> path = getPluginPath();
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92
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93 for (std::vector<QString>::iterator i = path.begin(); i != path.end(); ++i) {
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94
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95 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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96 std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: scanning directory " << i->toStdString() << std::endl;
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97 #endif
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98
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99 QDir pluginDir(*i, PLUGIN_GLOB,
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100 QDir::Name | QDir::IgnoreCase,
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101 QDir::Files | QDir::Readable);
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102
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103 for (unsigned int j = 0; j < pluginDir.count(); ++j) {
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104
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105 QString soname = pluginDir.filePath(pluginDir[j]);
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106
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107 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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108 std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: trying potential library " << soname.toStdString() << std::endl;
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109 #endif
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110
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111 void *libraryHandle = DLOPEN(soname, RTLD_LAZY);
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112
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113 if (!libraryHandle) {
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114 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Failed to load library " << soname.toStdString() << ": " << DLERROR() << std::endl;
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115 continue;
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116 }
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117
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118 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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119 std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: It's a library all right, checking for descriptor" << std::endl;
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120 #endif
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121
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122 VampGetPluginDescriptorFunction fn = (VampGetPluginDescriptorFunction)
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123 DLSYM(libraryHandle, "vampGetPluginDescriptor");
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124
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125 if (!fn) {
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126 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: No descriptor function in " << soname.toStdString() << std::endl;
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127 if (DLCLOSE(libraryHandle) != 0) {
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128 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Failed to unload library " << soname.toStdString() << std::endl;
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129 }
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130 continue;
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131 }
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132
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133 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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134 std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: Vamp descriptor found" << std::endl;
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135 #endif
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136
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137 const VampPluginDescriptor *descriptor = 0;
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138 int index = 0;
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139
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140 std::map<std::string, int> known;
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141 bool ok = true;
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142
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143 while ((descriptor = fn(VAMP_API_VERSION, index))) {
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144
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145 if (known.find(descriptor->identifier) != known.end()) {
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146 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Plugin library "
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147 << soname.toStdString()
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148 << " returns the same plugin identifier \""
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149 << descriptor->identifier << "\" at indices "
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150 << known[descriptor->identifier] << " and "
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151 << index << std::endl;
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152 std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: Avoiding this library (obsolete API?)" << std::endl;
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153 ok = false;
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154 break;
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155 } else {
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156 known[descriptor->identifier] = index;
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157 }
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158
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159 ++index;
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160 }
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161
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162 if (ok) {
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163
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164 index = 0;
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165
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166 while ((descriptor = fn(VAMP_API_VERSION, index))) {
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167
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168 QString id = PluginIdentifier::createIdentifier
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169 ("vamp", soname, descriptor->identifier);
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170 rv.push_back(id);
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171 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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172 std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: Found plugin id " << id.toStdString() << " at index " << index << std::endl;
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173 #endif
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174 ++index;
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175 }
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176 }
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177
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178 if (DLCLOSE(libraryHandle) != 0) {
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179 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Failed to unload library " << soname.toStdString() << std::endl;
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180 }
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181 }
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182 }
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183
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184 generateTaxonomy();
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185
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186 return rv;
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187 }
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188
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189 QString
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190 FeatureExtractionPluginFactory::findPluginFile(QString soname, QString inDir)
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191 {
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192 QString file = "";
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193
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194 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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195 std::cerr << "FeatureExtractionPluginFactory::findPluginFile(\""
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196 << soname.toStdString() << "\", \"" << inDir.toStdString() << "\")"
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197 << std::endl;
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198 #endif
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199
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200 if (inDir != "") {
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201
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202 QDir dir(inDir, PLUGIN_GLOB,
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203 QDir::Name | QDir::IgnoreCase,
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204 QDir::Files | QDir::Readable);
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205 if (!dir.exists()) return "";
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206
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207 file = dir.filePath(QFileInfo(soname).fileName());
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208
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209 if (QFileInfo(file).exists() && QFileInfo(file).isFile()) {
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210
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211 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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212 std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
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213 << "found trivially at " << file.toStdString() << std::endl;
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214 #endif
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215
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216 return file;
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217 }
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218
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219 for (unsigned int j = 0; j < dir.count(); ++j) {
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220 file = dir.filePath(dir[j]);
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221 if (QFileInfo(file).baseName() == QFileInfo(soname).baseName()) {
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222
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223 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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224 std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
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225 << "found at " << file.toStdString() << std::endl;
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226 #endif
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227
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228 return file;
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229 }
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230 }
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231
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232 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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233 std::cerr << "FeatureExtractionPluginFactory::findPluginFile (with dir): "
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234 << "not found" << std::endl;
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235 #endif
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236
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237 return "";
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238
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239 } else {
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240
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241 QFileInfo fi(soname);
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242
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243 if (fi.isAbsolute() && fi.exists() && fi.isFile()) {
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244 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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245 std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
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246 << "found trivially at " << soname.toStdString() << std::endl;
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247 #endif
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248 return soname;
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249 }
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250
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251 if (fi.isAbsolute() && fi.absolutePath() != "") {
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252 file = findPluginFile(soname, fi.absolutePath());
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253 if (file != "") return file;
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254 }
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255
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256 std::vector<QString> path = getPluginPath();
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257 for (std::vector<QString>::iterator i = path.begin();
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258 i != path.end(); ++i) {
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259 if (*i != "") {
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260 file = findPluginFile(soname, *i);
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261 if (file != "") return file;
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262 }
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263 }
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264
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265 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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266 std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
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267 << "not found" << std::endl;
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268 #endif
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269
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270 return "";
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271 }
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272 }
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273
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274 Vamp::Plugin *
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275 FeatureExtractionPluginFactory::instantiatePlugin(QString identifier,
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276 float inputSampleRate)
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277 {
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278 Vamp::Plugin *rv = 0;
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279
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280 const VampPluginDescriptor *descriptor = 0;
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281 int index = 0;
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282
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283 QString type, soname, label;
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284 PluginIdentifier::parseIdentifier(identifier, type, soname, label);
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285 if (type != "vamp") {
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286 std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Wrong factory for plugin type " << type.toStdString() << std::endl;
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287 return 0;
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288 }
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289
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290 QString found = findPluginFile(soname);
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291
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292 if (found == "") {
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293 std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to find library file " << soname.toStdString() << std::endl;
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294 return 0;
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295 } else if (found != soname) {
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296
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297 #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
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298 std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Given library name was " << soname.toStdString() << ", found at " << found.toStdString() << std::endl;
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299 std::cerr << soname.toStdString() << " -> " << found.toStdString() << std::endl;
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300 #endif
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301
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302 }
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303
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304 soname = found;
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305
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306 void *libraryHandle = DLOPEN(soname, RTLD_LAZY);
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307
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308 if (!libraryHandle) {
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309 std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to load library " << soname.toStdString() << ": " << DLERROR() << std::endl;
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310 return 0;
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Chris@19
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311 }
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312
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313 VampGetPluginDescriptorFunction fn = (VampGetPluginDescriptorFunction)
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314 DLSYM(libraryHandle, "vampGetPluginDescriptor");
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315
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316 if (!fn) {
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317 std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: No descriptor function in " << soname.toStdString() << std::endl;
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318 goto done;
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Chris@0
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319 }
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Chris@0
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320
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Chris@239
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321 while ((descriptor = fn(VAMP_API_VERSION, index))) {
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322 if (label == descriptor->identifier) break;
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323 ++index;
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Chris@47
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324 }
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325
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Chris@66
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326 if (!descriptor) {
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Chris@66
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327 std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to find plugin \"" << label.toStdString() << "\" in library " << soname.toStdString() << std::endl;
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328 goto done;
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329 }
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330
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331 rv = new Vamp::PluginHostAdapter(descriptor, inputSampleRate);
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332
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333 // std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Constructed Vamp plugin, rv is " << rv << std::endl;
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334
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Chris@66
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335 //!!! need to dlclose() when plugins from a given library are unloaded
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336
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337 done:
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Chris@66
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338 if (!rv) {
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339 if (DLCLOSE(libraryHandle) != 0) {
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Chris@66
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340 std::cerr << "WARNING: FeatureExtractionPluginFactory::instantiatePlugin: Failed to unload library " << soname.toStdString() << std::endl;
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Chris@66
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341 }
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Chris@66
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342 }
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343
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Chris@73
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344 // std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Instantiated plugin " << label.toStdString() << " from library " << soname.toStdString() << ": descriptor " << descriptor << ", rv "<< rv << ", label " << rv->getName() << ", outputs " << rv->getOutputDescriptors().size() << std::endl;
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345
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Chris@66
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346 return rv;
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Chris@0
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347 }
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Chris@0
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348
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Chris@165
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349 QString
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Chris@165
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350 FeatureExtractionPluginFactory::getPluginCategory(QString identifier)
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Chris@165
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351 {
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Chris@165
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352 return m_taxonomy[identifier];
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Chris@165
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353 }
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Chris@165
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354
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Chris@165
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355 void
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356 FeatureExtractionPluginFactory::generateTaxonomy()
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Chris@165
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357 {
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Chris@165
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358 std::vector<QString> pluginPath = getPluginPath();
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Chris@165
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359 std::vector<QString> path;
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Chris@165
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360
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Chris@165
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361 for (size_t i = 0; i < pluginPath.size(); ++i) {
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Chris@165
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362 if (pluginPath[i].contains("/lib/")) {
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Chris@165
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363 QString p(pluginPath[i]);
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Chris@165
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364 path.push_back(p);
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Chris@165
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365 p.replace("/lib/", "/share/");
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Chris@165
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366 path.push_back(p);
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Chris@165
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367 }
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Chris@165
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368 path.push_back(pluginPath[i]);
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Chris@165
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369 }
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370
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371 for (size_t i = 0; i < path.size(); ++i) {
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372
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373 QDir dir(path[i], "*.cat");
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374
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375 // std::cerr << "LADSPAPluginFactory::generateFallbackCategories: directory " << path[i].toStdString() << " has " << dir.count() << " .cat files" << std::endl;
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376 for (unsigned int j = 0; j < dir.count(); ++j) {
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377
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378 QFile file(path[i] + "/" + dir[j]);
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379
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380 // std::cerr << "LADSPAPluginFactory::generateFallbackCategories: about to open " << (path[i].toStdString() + "/" + dir[j].toStdString()) << std::endl;
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381
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382 if (file.open(QIODevice::ReadOnly)) {
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383 // std::cerr << "...opened" << std::endl;
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384 QTextStream stream(&file);
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385 QString line;
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386
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387 while (!stream.atEnd()) {
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388 line = stream.readLine();
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389 // std::cerr << "line is: \"" << line.toStdString() << "\"" << std::endl;
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390 QString id = PluginIdentifier::canonicalise
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391 (line.section("::", 0, 0));
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392 QString cat = line.section("::", 1, 1);
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393 m_taxonomy[id] = cat;
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394 // std::cerr << "FeatureExtractionPluginFactory: set id \"" << id.toStdString() << "\" to cat \"" << cat.toStdString() << "\"" << std::endl;
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395 }
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396 }
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397 }
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398 }
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399 }
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