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/*************************************************************************
AsciiDecoder.h - decoder for ASCII data
-------------------
begin : Sun Nov 26 2006
copyright : (C) 2006 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 ASCII_DECODER_H
#define ASCII_DECODER_H
#include "config.h"
#include <QQueue>
#include <QString>
#include <QTextStream>
#include "libkwave/Decoder.h"
#include "libkwave/FileInfo.h"
class QIODevice;
class QWidget;
namespace Kwave
{
class AsciiDecoder: public Kwave::Decoder
{
public:
/** Constructor */
AsciiDecoder();
/** Destructor */
~AsciiDecoder() override;
/** Returns a new instance of the decoder */
Kwave::Decoder *instance() override;
/**
* Opens the source and decodes the header information.
* @param widget a widget that can be used for displaying
* message boxes or dialogs
* @param source file or other source with a stream of bytes
* @return true if succeeded, false on errors
*/
bool open(QWidget *widget, QIODevice &source) override;
/**
* Decodes a stream of bytes into a MultiWriter
* @param widget a widget that can be used for displaying
* message boxes or dialogs
* @param dst MultiWriter that receives the audio data
* @return true if succeeded, false on errors
*/
virtual bool decode(QWidget *widget, Kwave::MultiWriter &dst)
override;
/**
* Closes the source.
*/
void close() override;
private:
/**
* try to read a complete line from the source, skip empty lines
* and comments
* @return true if one line was read, false if EOF was reached
* before one line was complete
*/
bool readNextLine();
private:
/** source of the audio data */
QTextStream m_source;
/** destination of the audio data */
Kwave::MultiWriter *m_dest;
/** queue for buffering strings read from the file */
QQueue<QString> m_queue_input;
/** last read line number, starting with 1 */
quint64 m_line_nr;
};
}
#endif /* ASCII_DECODER_H */
//***************************************************************************
//***************************************************************************
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