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/****************************************************************************
**
** Copyright (C) 2012 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, QDir::Name)) {
#if defined(Q_OS_MAC)
if (!imageSuffix.isEmpty()) { // Only add appropriate images
if (file.lastIndexOf(imageSuffix, -6) == -1)
continue;
} else {
int foundSuffix = file.lastIndexOf(QLatin1String("_debug.dylib"));
if (foundSuffix == -1) {
foundSuffix = file.lastIndexOf(QLatin1String("_profile.dylib"));
}
if (foundSuffix != -1) {
/*
If this is a "special" version of the plugin, prefer the release
version, where available.
Avoids warnings like:
objc[23101]: Class TransparentQTMovieView is implemented in both
libqqt7engine_debug.dylib and libqqt7engine.dylib. One of the two
will be used. Which one is undefined.
Note, this code relies on QDir::Name sorting!
*/
QString preferred =
typeDir.absoluteFilePath(file.left(foundSuffix) + QLatin1String(".dylib"));
if (plugins.contains(preferred)) {
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
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