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142 lines
4 KiB
C++
142 lines
4 KiB
C++
/* This file is part of the KDE project
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Copyright (C) 2007 Matthias Kretz <kretz@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef PHONON_MEDIANODE_P_H
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#define PHONON_MEDIANODE_P_H
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#include <QtCore/QtGlobal>
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#include <QtCore/QList>
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#include <QtCore/QObject>
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#include <phonon/path.h>
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#include <phonon/phonon_export.h>
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QT_BEGIN_NAMESPACE
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class QObject;
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namespace Phonon
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{
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class MediaNode;
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class MediaNodeDestructionHandler;
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class PHONON_EXPORT MediaNodePrivate
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{
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Q_DECLARE_PUBLIC(MediaNode)
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friend class AudioOutputPrivate;
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friend class FactoryPrivate;
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protected:
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enum CastId {
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MediaNodePrivateType,
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AbstractAudioOutputPrivateType,
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AudioOutputType
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};
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public:
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/**
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* Returns the backend object. If the object does not exist it tries to
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* create it before returning.
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*
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* \return the Iface object, might return \c 0
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*/
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QObject *backendObject();
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const CastId castId;
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protected:
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MediaNodePrivate(CastId _castId = MediaNodePrivateType);
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virtual ~MediaNodePrivate();
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/**
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* \internal
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* This method cleanly deletes the Iface object. It is called on
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* destruction and before a backend change.
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*/
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void deleteBackendObject();
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virtual bool aboutToDeleteBackendObject() = 0;
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/**
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* \internal
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* Creates the Iface object belonging to this class. For most cases the
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* implementation is
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* \code
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* Q_Q(ClassName);
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* m_iface = Factory::createClassName(this);
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* return m_iface;
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* \endcode
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*
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* This function should not be called except from slotCreateIface.
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*
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* \see slotCreateIface
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*/
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virtual void createBackendObject() = 0;
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public:
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/**
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* \internal
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* This class has its own destroyed signal since some cleanup calls
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* need the pointer to the backend object intact. The
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* QObject::destroyed signals comes after the backend object was
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* deleted.
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*
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* As this class cannot derive from QObject a simple handler
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* interface is used.
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*/
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void addDestructionHandler(MediaNodeDestructionHandler *handler);
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/**
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* \internal
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* This class has its own destroyed signal since some cleanup calls
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* need the pointer to the backend object intact. The
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* QObject::destroyed signals comes after the backend object was
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* deleted.
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*
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* As this class cannot derive from QObject a simple handler
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* interface is used.
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*/
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void removeDestructionHandler(MediaNodeDestructionHandler *handler);
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void addOutputPath(const Path &);
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void addInputPath(const Path &);
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void removeOutputPath(const Path &);
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void removeInputPath(const Path &);
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const QObject *qObject() const { return const_cast<MediaNodePrivate *>(this)->qObject(); }
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virtual QObject *qObject() = 0;
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protected:
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MediaNode *q_ptr;
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public:
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QObject *m_backendObject;
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protected:
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QList<Path> outputPaths;
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QList<Path> inputPaths;
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private:
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QList<MediaNodeDestructionHandler *> handlers;
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Q_DISABLE_COPY(MediaNodePrivate)
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};
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} // namespace Phonon
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QT_END_NAMESPACE
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#endif // PHONON_MEDIANODE_P_H
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