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/***************************************************************************
Encoder.h - abstract base class of all encoders
-------------------
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 ENCODER_H
#define ENCODER_H
#include "config.h"
#include "libkwave_export.h"
#include <QtGlobal>
#include <QList>
#include <QObject>
#include "libkwave/CodecBase.h"
#include "libkwave/FileInfo.h"
class QIODevice;
class QWidget;
namespace Kwave
{
class MultiTrackReader;
class LIBKWAVE_EXPORT Encoder: public QObject, public Kwave::CodecBase
{
Q_OBJECT
public:
/** Constructor */
Encoder();
/** Destructor */
~Encoder() override {}
/** Returns a new instance of the encoder */
virtual Encoder *instance() = 0;
/**
* Encodes a signal into a stream of bytes.
* @param widget a widget that can be used for displaying
* message boxes or dialogs
* @param src MultiTrackReader used as source of the audio data
* @param dst file or other source to receive a stream of bytes
* @param meta_data meta data of the file to save
* @return true if succeeded, false on errors
*/
virtual bool encode(QWidget *widget,
Kwave::MultiTrackReader &src,
QIODevice &dst,
const Kwave::MetaDataList &meta_data) = 0;
/** Returns a list of supported file properties */
virtual QList<Kwave::FileProperty> supportedProperties() {
QList<Kwave::FileProperty> empty;
return empty;
}
/**
* Returns a list of all properties within a list of properties
* which are not supported by this encoder
* @param properties_to_check list of properties to check
* @return list of unsupported properties (may be empty)
*/
virtual QList<Kwave::FileProperty> unsupportedProperties(
const QList<Kwave::FileProperty> &properties_to_check
);
};
}
#endif /* ENCODER_H */
//***************************************************************************
//***************************************************************************
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