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****************************************************************************/

#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