Decoder.h

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/***************************************************************************
              Decoder.h  -  abstract base class of all decoders
                             -------------------
    begin                : Mar 10 2002
    copyright            : (C) 2002 by Thomas Eschenbacher
    email                : Thomas Eschenbacher <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 DECODER_H
#define DECODER_H

#include "config.h"

#include <QtGlobal>
#include <QObject>

#include "libkwave/CodecBase.h"
#include "libkwave/MetaDataList.h"

class QIODevice;
class QWidget;

namespace Kwave
{

    class MultiWriter;

    class Q_DECL_EXPORT Decoder: public QObject, public Kwave::CodecBase
    {
        Q_OBJECT
    public:

        Decoder();

        virtual ~Decoder();

        virtual Decoder *instance() = 0;

        virtual bool open(QWidget *widget, QIODevice &source) = 0;

        virtual bool decode(QWidget *widget, Kwave::MultiWriter &dst) = 0;

        virtual void close() = 0;

        virtual inline Kwave::MetaDataList &metaData() { return m_meta_data; }

    signals:

        void sourceProcessed(quint64 pos);

    protected:

        Kwave::MetaDataList m_meta_data;

    };
}

#endif /* DECODER_H */

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