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/*************************************************************************
SampleSource.h - base class with a generic sample source
-------------------
begin : Sun Oct 07 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 SAMPLE_SOURCE_H
#define SAMPLE_SOURCE_H
#include "config.h"
#include "libkwave_export.h"
#include <QtGlobal>
#include <QObject>
#include "libkwave/SampleArray.h"
#include "libkwave/modules/StreamObject.h"
namespace Kwave
{
class LIBKWAVE_EXPORT SampleSource: public Kwave::StreamObject
{
Q_OBJECT
public:
/**
* Constructor
*
* @param parent a parent object, passed to QObject (optional)
*/
explicit SampleSource(QObject *parent = nullptr);
/** Destructor */
~SampleSource() override;
/**
* Each KwaveSampleSource has to derive this method for producing
* sample data. It then should emit a signal like this:
* "output(SampleArray data)"
*/
virtual void goOn() = 0;
/**
* Returns true if the end of the source has been reached,
* e.g. at EOF of an input stream. The default implementation
* always returns false, which means that the source is always
* able to produce data (useful for signal generators).
*
* @return true if it can produce more sample data, otherwise false
*/
virtual bool done() const { return false; }
};
}
#endif /* SAMPLE_SOURCE_H */
//***************************************************************************
//***************************************************************************
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