--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/multimedia/audio/qaudiopluginloader.cpp	Wed Aug 25 15:49:42 2010 +0300
@@ -0,0 +1,166 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudiosystemplugin.h"
+#include "qaudiopluginloader_p.h"
+
+#include <QtCore/qcoreapplication.h>
+#include <QtGui/qapplication.h>
+#include <QtCore/qpluginloader.h>
+#include <QtCore/qfactoryinterface.h>
+#include <QtCore/qdir.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+QAudioPluginLoader::QAudioPluginLoader(const char *iid, const QString &location, Qt::CaseSensitivity):
+    m_iid(iid)
+{
+    m_location = location + "/";
+    load();
+}
+
+QAudioPluginLoader::~QAudioPluginLoader()
+{
+    for (int i = 0; i < m_plugins.count(); i++ ) {
+        delete m_plugins.at(i);
+    }
+}
+
+QStringList QAudioPluginLoader::pluginList() const
+{
+#if !defined QT_NO_DEBUG
+    const bool showDebug = qgetenv("QT_DEBUG_PLUGINS").toInt() > 0;
+#endif
+
+    QStringList paths = QApplication::libraryPaths();
+#ifdef QTM_PLUGIN_PATH
+    paths << QLatin1String(QTM_PLUGIN_PATH);
+#endif
+#if !defined QT_NO_DEBUG
+    if (showDebug)
+        qDebug() << "Plugin paths:" << paths;
+#endif
+
+    //temp variable to avoid multiple identic path
+    QSet<QString> processed;
+
+    /* Discover a bunch o plugins */
+    QStringList plugins;
+
+    /* Enumerate our plugin paths */
+    for (int i=0; i < paths.count(); i++) {
+        if (processed.contains(paths.at(i)))
+            continue;
+        processed.insert(paths.at(i));
+        QDir pluginsDir(paths.at(i)+m_location);
+        if (!pluginsDir.exists())
+            continue;
+
+        QStringList files = pluginsDir.entryList(QDir::Files);
+#if !defined QT_NO_DEBUG
+        if (showDebug)
+            qDebug()<<"Looking for plugins in "<<pluginsDir.path()<<files;
+#endif
+        for (int j=0; j < files.count(); j++) {
+            plugins <<  pluginsDir.absoluteFilePath(files.at(j));
+        }
+    }
+    return  plugins;
+}
+
+QStringList QAudioPluginLoader::keys() const
+{
+    QMutexLocker(m_mutex());
+
+    QStringList list;
+    for (int i = 0; i < m_plugins.count(); i++) {
+        QAudioSystemPlugin* p = qobject_cast<QAudioSystemPlugin*>(m_plugins.at(i)->instance());
+        if (p) list << p->keys();
+    }
+
+    return list;
+}
+
+QObject* QAudioPluginLoader::instance(QString const &key)
+{
+    QMutexLocker(mutex());
+
+    for (int i = 0; i < m_plugins.count(); i++) {
+        QAudioSystemPlugin* p = qobject_cast<QAudioSystemPlugin*>(m_plugins.at(i)->instance());
+        if (p && p->keys().contains(key))
+            return m_plugins.at(i)->instance();
+    }
+    return 0;
+}
+
+QList<QObject*> QAudioPluginLoader::instances(QString const &key)
+{
+    QMutexLocker(mutex());
+
+    QList<QObject*> list;
+    for (int i = 0; i < m_plugins.count(); i++) {
+        QAudioSystemPlugin* p = qobject_cast<QAudioSystemPlugin*>(m_plugins.at(i)->instance());
+        if (p && p->keys().contains(key))
+            list << m_plugins.at(i)->instance();
+    }
+    return list;
+}
+
+void QAudioPluginLoader::load()
+{
+    if (!m_plugins.isEmpty())
+        return;
+
+    QStringList plugins = pluginList();
+    for (int i=0; i < plugins.count(); i++) {
+        QPluginLoader* loader = new QPluginLoader(plugins.at(i));
+        QObject *o = loader->instance();
+        if (o != 0 && o->qt_metacast(m_iid) != 0)
+            m_plugins.append(loader);
+        else {
+            qWarning() << "QAudioPluginLoader: Failed to load plugin: "
+                << plugins.at(i) << loader->errorString();
+        }
+    }
+}
+QT_END_NAMESPACE
+