StreamObject.h

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/*************************************************************************
         StreamObject.h  -  base class with a generic sample source/sink
                             -------------------
    begin                : Thu Nov 01 2007
    copyright            : (C) 2007 by Thomas Eschenbacher
    email                : Thomas.Eschenbacher@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef STREAM_OBJECT_H
#define STREAM_OBJECT_H

#include "config.h"

#include <QtGlobal>
#include <QMutex>
#include <QObject>

class QVariant;

namespace Kwave
{

    class Q_DECL_EXPORT StreamObject: public QObject
    {
        Q_OBJECT
    public:
        explicit StreamObject(QObject *parent = Q_NULLPTR);

        virtual ~StreamObject();

        virtual unsigned int tracks() const { return 1; }

        virtual Kwave::StreamObject * operator [] (unsigned int track)
        {
            return (track == 0) ? this : Q_NULLPTR;
        }

        virtual unsigned int tracksOfPort(const char *port) const
        {
            Q_UNUSED(port);
            return tracks();
        }

        virtual Kwave::StreamObject *port(const char *port, unsigned int track)
        {
            Q_UNUSED(port);
            return (*this)[track];
        }

        virtual unsigned int blockSize() const;

        void setAttribute(const char *attribute,
                          const QVariant &value);

        static void setInteractive(bool interactive);

    signals:

        void attributeChanged(const QVariant value);

    private:

        QMutex m_lock_set_attribute;

        static bool m_interactive;

    };
}

#endif /* STREAM_OBJECT_H */

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