akelement.h
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/* Webcamoid, webcam capture application.
* Copyright (C) 2016 Gonzalo Exequiel Pedone
*
* Webcamoid is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Webcamoid is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Webcamoid. If not, see <http://www.gnu.org/licenses/>.
*
* Web-Site: http://webcamoid.github.io/
*/
#ifndef AKELEMENT_H
#define AKELEMENT_H
#include <QObject>
#include "../akcommons.h"
class AkElement;
class AkElementPrivate;
class AkPacket;
class AkAudioPacket;
class AkVideoPacket;
class AkCompressedAudioPacket;
class AkCompressedVideoPacket;
class QDataStream;
class QQmlEngine;
class QQmlContext;
using AkElementPtr = QSharedPointer<AkElement>;
class AKCOMMONS_EXPORT AkElement: public QObject
{
Q_OBJECT
Q_PROPERTY(AkElement::ElementState state
READ state
WRITE setState
RESET resetState
NOTIFY stateChanged)
public:
enum ElementState
{
ElementStateNull,
ElementStatePaused,
ElementStatePlaying
};
Q_ENUM(ElementState)
AkElement(QObject *parent=nullptr);
virtual ~AkElement();
Q_INVOKABLE virtual AkElement::ElementState state() const;
Q_INVOKABLE virtual QObject *controlInterface(QQmlEngine *engine,
const QString &controlId) const;
Q_INVOKABLE virtual bool link(const QObject *dstElement,
Qt::ConnectionType connectionType=Qt::AutoConnection) const;
Q_INVOKABLE virtual bool link(const AkElementPtr &dstElement,
Qt::ConnectionType connectionType=Qt::AutoConnection) const;
Q_INVOKABLE virtual bool unlink(const QObject *dstElement) const;
Q_INVOKABLE virtual bool unlink(const AkElementPtr &dstElement) const;
Q_INVOKABLE static bool link(const AkElementPtr &srcElement,
const QObject *dstElement,
Qt::ConnectionType connectionType=Qt::AutoConnection);
Q_INVOKABLE static bool link(const AkElementPtr &srcElement,
const AkElementPtr &dstElement,
Qt::ConnectionType connectionType=Qt::AutoConnection);
Q_INVOKABLE static bool link(const QObject *srcElement,
const QObject *dstElement,
Qt::ConnectionType connectionType=Qt::AutoConnection);
Q_INVOKABLE static bool unlink(const AkElementPtr &srcElement,
const QObject *dstElement);
Q_INVOKABLE static bool unlink(const AkElementPtr &srcElement,
const AkElementPtr &dstElement);
Q_INVOKABLE static bool unlink(const QObject *srcElement,
const QObject *dstElement);
private:
AkElementPrivate *d;
protected:
virtual QString controlInterfaceProvide(const QString &controlId) const;
virtual void controlInterfaceConfigure(QQmlContext *context,
const QString &controlId) const;
virtual AkPacket iAudioStream(const AkAudioPacket &packet);
virtual AkPacket iVideoStream(const AkVideoPacket &packet);
virtual AkPacket iCompressedAudioStream(const AkCompressedAudioPacket &packet);
virtual AkPacket iCompressedVideoStream(const AkCompressedVideoPacket &packet);
Q_SIGNALS:
void stateChanged(AkElement::ElementState state);
void oStream(const AkPacket &packet);
public Q_SLOTS:
virtual AkPacket iStream(const AkPacket &packet);
virtual bool setState(AkElement::ElementState state);
virtual void resetState();
static void registerTypes();
};
AKCOMMONS_EXPORT QDataStream &operator >>(QDataStream &istream, AkElement::ElementState &state);
AKCOMMONS_EXPORT QDataStream &operator <<(QDataStream &ostream, AkElement::ElementState state);
Q_DECLARE_METATYPE(AkElement::ElementState)
#endif // AKELEMENT_H