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Diffstat (limited to 'src/multimedia/qmediapluginloader.cpp')
| -rw-r--r-- | src/multimedia/qmediapluginloader.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/src/multimedia/qmediapluginloader.cpp b/src/multimedia/qmediapluginloader.cpp new file mode 100644 index 000000000..32f336959 --- /dev/null +++ b/src/multimedia/qmediapluginloader.cpp @@ -0,0 +1,213 @@ +/**************************************************************************** +** +** 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 Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmediapluginloader_p.h" +#include <QtCore/qcoreapplication.h> +#include <QtCore/qpluginloader.h> +#include <QtCore/qdir.h> +#include <QtCore/qdebug.h> + +#include "qmediaserviceproviderplugin.h" + +#if defined(Q_OS_MAC) +# include <CoreFoundation/CoreFoundation.h> +#endif + +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 = QString::fromLatin1("/%1").arg(location); + load(); +} + +QStringList QMediaPluginLoader::keys() const +{ + return m_instances.keys(); +} + +QObject* QMediaPluginLoader::instance(QString const &key) +{ + return m_instances.value(key).value(0); +} + +QList<QObject*> QMediaPluginLoader::instances(QString const &key) +{ + return m_instances.value(key); +} + +//to be used for testing purposes only +void QMediaPluginLoader::setStaticPlugins(const QString &location, const QObjectList& objects) +{ + staticMediaPlugins()->insert(QString::fromLatin1("/%1").arg(location), objects); +} + +QStringList QMediaPluginLoader::availablePlugins() const +{ + QStringList paths; + QStringList plugins; + +#if defined(Q_OS_MAC) + QString imageSuffix(qgetenv("DYLD_IMAGE_SUFFIX")); + + // Bundle plugin directory + CFBundleRef mainBundle = CFBundleGetMainBundle(); + if (mainBundle != 0) { + CFURLRef baseUrl = CFBundleCopyBundleURL(mainBundle); + CFURLRef pluginUrlPart = CFBundleCopyBuiltInPlugInsURL(mainBundle); + CFStringRef pluginPathPart = CFURLCopyFileSystemPath(pluginUrlPart, kCFURLPOSIXPathStyle); + CFURLRef pluginUrl = CFURLCreateCopyAppendingPathComponent(0, baseUrl, pluginPathPart, true); + CFStringRef pluginPath = CFURLCopyFileSystemPath(pluginUrl, kCFURLPOSIXPathStyle); + + CFIndex length = CFStringGetLength(pluginPath); + UniChar buffer[length]; + CFStringGetCharacters(pluginPath, CFRangeMake(0, length), buffer); + + paths << QString(reinterpret_cast<const QChar *>(buffer), length); + + CFRelease(pluginPath); + CFRelease(pluginUrl); + CFRelease(pluginPathPart); + CFRelease(pluginUrlPart); + CFRelease(baseUrl); + } +#endif + + // Qt paths + paths << QCoreApplication::libraryPaths(); + + foreach (const QString &path, paths) { + QDir typeDir(path + m_location); + foreach (const QString &file, typeDir.entryList(QDir::Files)) { +#if defined(Q_OS_MAC) + if (!imageSuffix.isEmpty()) { // Only add appropriate images + if (file.lastIndexOf(imageSuffix, -6) == -1) + continue; + } else { // Ignore any images with common suffixes + if (file.endsWith(QLatin1String("_debug.dylib")) || + file.endsWith(QLatin1String("_profile.dylib"))) + continue; + } +#elif defined(Q_OS_UNIX) + // Ignore separate debug files + if (file.endsWith(QLatin1String(".debug"))) + continue; +#elif defined(Q_OS_WIN) + // Ignore non-dlls + if (!file.endsWith(QLatin1String(".dll"), Qt::CaseInsensitive)) + continue; +#endif + plugins << typeDir.absoluteFilePath(file); + } + } + + return plugins; +} + +void QMediaPluginLoader::load() +{ + if (!m_instances.isEmpty()) + return; + +#if !defined QT_NO_DEBUG + const bool showDebug = qgetenv("QT_DEBUG_PLUGINS").toInt() > 0; +#endif + + 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[key].append(o); + } + } + } + } else { + QSet<QString> loadedPlugins; + + foreach (const QString &plugin, availablePlugins()) { + QString fileName = QFileInfo(plugin).fileName(); + //don't try to load plugin with the same name if it's already loaded + if (loadedPlugins.contains(fileName)) { +#if !defined QT_NO_DEBUG + if (showDebug) + qDebug() << "Skip loading plugin" << plugin; +#endif + continue; + } + + QPluginLoader loader(plugin); + + QObject *o = loader.instance(); + if (o != 0 && o->qt_metacast(m_iid) != 0) { + QFactoryInterface* p = qobject_cast<QFactoryInterface*>(o); + if (p != 0) { + foreach (const QString &key, p->keys()) + m_instances[key].append(o); + + loadedPlugins.insert(fileName); +#if !defined QT_NO_DEBUG + if (showDebug) + qDebug() << "Loaded plugin" << plugin << "services:" << p->keys(); +#endif + } + + continue; + } else { +#if !defined QT_NO_DEBUG + if (showDebug) + qWarning() << "QMediaPluginLoader: Failed to load plugin: " << plugin << loader.errorString(); +#endif + } + + delete o; + } + } +} + +QT_END_NAMESPACE + |