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Diffstat (limited to 'src/multimedia/base/qmediapluginloader.cpp')
-rw-r--r-- | src/multimedia/base/qmediapluginloader.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/multimedia/base/qmediapluginloader.cpp b/src/multimedia/base/qmediapluginloader.cpp new file mode 100644 index 0000000..24c5aba --- /dev/null +++ b/src/multimedia/base/qmediapluginloader.cpp @@ -0,0 +1,133 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtMultimedia module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 "qmediapluginloader_p.h" +#include <QtCore/qcoreapplication.h> +#include <QtCore/qpluginloader.h> +#include <QtCore/qdir.h> +#include <QtCore/qdebug.h> + +#include <QtMultimedia/qmediaserviceproviderplugin.h> + + +QT_BEGIN_NAMESPACE + + +typedef QMap<QString,QObjectList> ObjectListMap; +Q_GLOBAL_STATIC(ObjectListMap, staticMediaPlugins); + +QMediaPluginLoader::QMediaPluginLoader(const char *iid, const QString &location, Qt::CaseSensitivity): + m_iid(iid) +{ + m_location = location + QLatin1String("/"); + load(); +} + +QStringList QMediaPluginLoader::keys() const +{ + return m_instances.keys(); +} + +QObject* QMediaPluginLoader::instance(QString const &key) +{ + return m_instances.value(key); +} + +QList<QObject*> QMediaPluginLoader::instances(QString const &key) +{ + return m_instances.values(key); +} + +//to be used for testing purposes only +void QMediaPluginLoader::setStaticPlugins(const QString &location, const QObjectList& objects) +{ + staticMediaPlugins()->insert(location + QLatin1String("/"), objects); +} + +void QMediaPluginLoader::load() +{ + if (!m_instances.isEmpty()) + return; + + if (staticMediaPlugins() && staticMediaPlugins()->contains(m_location)) { + foreach(QObject *o, staticMediaPlugins()->value(m_location)) { + if (o != 0 && o->qt_metacast(m_iid) != 0) { + QFactoryInterface* p = qobject_cast<QFactoryInterface*>(o); + if (p != 0) { + foreach (QString const &key, p->keys()) + m_instances.insertMulti(key, o); + } + } + } + } else { + QStringList paths = QCoreApplication::libraryPaths(); + + foreach (QString const &path, paths) { + QString pluginPathName(path + m_location); + QDir pluginDir(pluginPathName); + + if (!pluginDir.exists()) + continue; + + foreach (QString pluginLib, pluginDir.entryList(QDir::Files)) { + QPluginLoader loader(pluginPathName + pluginLib); + + QObject *o = loader.instance(); + if (o != 0 && o->qt_metacast(m_iid) != 0) { + QFactoryInterface* p = qobject_cast<QFactoryInterface*>(o); + if (p != 0) { + foreach (QString const &key, p->keys()) + m_instances.insertMulti(key, o); + } + + continue; + } else { + qWarning() << "QMediaPluginLoader: Failed to load plugin: " << pluginLib << loader.errorString(); + } + delete o; + loader.unload(); + } + } + } +} + +QT_END_NAMESPACE + |