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/***************************************************************************
copyright : (C) 2003 by Arnold Krille
email : arnold@arnoldarts.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; version 2 of the License. *
* *
***************************************************************************/
#ifndef KREC_EXPORT_TEMPLATE_H
#define KREC_EXPORT_TEMPLATE_H
#include <qobject.h>
#include <qstring.h>
#include <qstringlist.h>
#include <qcstring.h>
#include <arts/common.h>
/**
* This class is the template for all exportitems in KRec.
*
* To register your ExportItem you have to do @code registerAtGlobal( this ); @code
* at the end of your constructor.
*
* @author Arnold Krille <arnold@arnoldarts.de>
*/
class KRecExportItem : public QObject {
Q_OBJECT
private:
/// Controls wether an export is running, or not...
bool _running;
int _samplingRate, _bits, _channels;
protected:
KRecExportItem( QObject*, const char* =0, const QStringList& =0 );
/**
* This registers this class at the KRecGlobal.
*/
static void registerAtGlobal( KRecExportItem* );
int samplingRate() const;
int bits() const;
int channels() const;
/// Helpers for reading and writing to an char-array
Q_INT16 read16( char* array, int index );
void write16( char* array, Q_INT16 value, int index );
void write32( char* array, Q_INT32 value, int index );
public:
~KRecExportItem();
/**
* Returns a new Item for your export.
*/
virtual KRecExportItem* newItem()=0;
/// Returns a list with the extensions.
virtual QStringList extensions()=0;
/// Returns the export format.
virtual QString exportFormat()=0;
bool running() const { return _running; }
public slots:
/**
* Initializes the sound-settings.
* Has to be called before the initialize( const QString & ) function.
*/
void initialize( int samplingRate, int bits, int channels );
/// Initializes the export.
virtual bool initialize( const QString &filename )=0;
/**
* Start the real export (including the emission of @see getData() while running=true).
* Best way to do this is to use @see QTimer::singleShot() since then the events are
* put at the end of the EventLoop not blocking the gui and everything else.
*/
bool start();
virtual bool process() =0;
/// Stops the export by setting running=false.
void stop();
/// Finish the export.
virtual bool finalize()=0;
//virtual void data( QByteArray& );
signals:
/// Is emitted when this Item wants data to export.
void getData( QByteArray& );
void running( bool );
};
#endif
// vim:sw=4:ts=4
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