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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qaudiosystemplugin.h" |
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43 #include "qaudiopluginloader_p.h" |
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44 |
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45 #include <QtCore/qcoreapplication.h> |
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46 #include <QtGui/qapplication.h> |
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47 #include <QtCore/qpluginloader.h> |
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48 #include <QtCore/qfactoryinterface.h> |
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49 #include <QtCore/qdir.h> |
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50 #include <QtCore/qdebug.h> |
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51 |
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52 QT_BEGIN_NAMESPACE |
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53 |
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54 QAudioPluginLoader::QAudioPluginLoader(const char *iid, const QString &location, Qt::CaseSensitivity): |
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55 m_iid(iid) |
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56 { |
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57 m_location = location + "/"; |
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58 load(); |
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59 } |
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60 |
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61 QAudioPluginLoader::~QAudioPluginLoader() |
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62 { |
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63 for (int i = 0; i < m_plugins.count(); i++ ) { |
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64 delete m_plugins.at(i); |
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65 } |
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66 } |
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67 |
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68 QStringList QAudioPluginLoader::pluginList() const |
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69 { |
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70 #if !defined QT_NO_DEBUG |
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71 const bool showDebug = qgetenv("QT_DEBUG_PLUGINS").toInt() > 0; |
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72 #endif |
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73 |
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74 QStringList paths = QApplication::libraryPaths(); |
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75 #ifdef QTM_PLUGIN_PATH |
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76 paths << QLatin1String(QTM_PLUGIN_PATH); |
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77 #endif |
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78 #if !defined QT_NO_DEBUG |
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79 if (showDebug) |
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80 qDebug() << "Plugin paths:" << paths; |
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81 #endif |
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82 |
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83 //temp variable to avoid multiple identic path |
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84 QSet<QString> processed; |
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85 |
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86 /* Discover a bunch o plugins */ |
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87 QStringList plugins; |
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88 |
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89 /* Enumerate our plugin paths */ |
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90 for (int i=0; i < paths.count(); i++) { |
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91 if (processed.contains(paths.at(i))) |
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92 continue; |
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93 processed.insert(paths.at(i)); |
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94 QDir pluginsDir(paths.at(i)+m_location); |
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95 if (!pluginsDir.exists()) |
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96 continue; |
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97 |
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98 QStringList files = pluginsDir.entryList(QDir::Files); |
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99 #if !defined QT_NO_DEBUG |
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100 if (showDebug) |
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101 qDebug()<<"Looking for plugins in "<<pluginsDir.path()<<files; |
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102 #endif |
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103 for (int j=0; j < files.count(); j++) { |
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104 plugins << pluginsDir.absoluteFilePath(files.at(j)); |
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105 } |
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106 } |
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107 return plugins; |
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108 } |
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109 |
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110 QStringList QAudioPluginLoader::keys() const |
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111 { |
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112 QMutexLocker(m_mutex()); |
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113 |
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114 QStringList list; |
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115 for (int i = 0; i < m_plugins.count(); i++) { |
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116 QAudioSystemPlugin* p = qobject_cast<QAudioSystemPlugin*>(m_plugins.at(i)->instance()); |
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117 if (p) list << p->keys(); |
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118 } |
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119 |
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120 return list; |
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121 } |
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122 |
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123 QObject* QAudioPluginLoader::instance(QString const &key) |
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124 { |
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125 QMutexLocker(mutex()); |
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126 |
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127 for (int i = 0; i < m_plugins.count(); i++) { |
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128 QAudioSystemPlugin* p = qobject_cast<QAudioSystemPlugin*>(m_plugins.at(i)->instance()); |
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129 if (p && p->keys().contains(key)) |
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130 return m_plugins.at(i)->instance(); |
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131 } |
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132 return 0; |
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133 } |
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134 |
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135 QList<QObject*> QAudioPluginLoader::instances(QString const &key) |
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136 { |
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137 QMutexLocker(mutex()); |
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138 |
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139 QList<QObject*> list; |
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140 for (int i = 0; i < m_plugins.count(); i++) { |
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141 QAudioSystemPlugin* p = qobject_cast<QAudioSystemPlugin*>(m_plugins.at(i)->instance()); |
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142 if (p && p->keys().contains(key)) |
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143 list << m_plugins.at(i)->instance(); |
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144 } |
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145 return list; |
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146 } |
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147 |
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148 void QAudioPluginLoader::load() |
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149 { |
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150 if (!m_plugins.isEmpty()) |
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151 return; |
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152 |
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153 QStringList plugins = pluginList(); |
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154 for (int i=0; i < plugins.count(); i++) { |
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155 QPluginLoader* loader = new QPluginLoader(plugins.at(i)); |
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156 QObject *o = loader->instance(); |
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157 if (o != 0 && o->qt_metacast(m_iid) != 0) |
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158 m_plugins.append(loader); |
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159 else { |
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160 qWarning() << "QAudioPluginLoader: Failed to load plugin: " |
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161 << plugins.at(i) << loader->errorString(); |
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162 } |
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163 } |
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164 } |
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165 QT_END_NAMESPACE |
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166 |