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/*************************************************************************
WavEncoder.h - encoder for wav data
-------------------
begin : Sun Mar 10 2002
copyright : (C) 2002 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 WAV_ENCODER_H
#define WAV_ENCODER_H
#include "config.h"
#include <QList>
#include "libkwave/Encoder.h"
#include "libkwave/MetaDataList.h"
#include "WavPropertyMap.h"
class QWidget;
namespace Kwave
{
class LabelList;
class WavEncoder: public Kwave::Encoder
{
public:
/** Constructor */
WavEncoder();
/** Destructor */
~WavEncoder() override;
/** Returns a new instance of the encoder */
Encoder *instance() override;
/**
* 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)
override;
/** Returns a list of supported file properties */
virtual QList<Kwave::FileProperty> supportedProperties()
override;
private:
/**
* write the INFO chunk with all known file properties
*
* @param dst file or other source to receive a stream of bytes
* @param info information about the file to be saved
*/
void writeInfoChunk(QIODevice &dst, Kwave::FileInfo &info);
/**
* write the 'cue list' and the label names (if any)
*
* @param dst file or other source to receive a stream of bytes
* @param labels a list of labels
*/
void writeLabels(QIODevice &dst, const Kwave::LabelList &labels);
/**
* Fix the size of the "data" and the "RIFF" chunk, as libaudiofile
* is sometimes really buggy due to internal calculations done
* with "float" as data type. This can lead to broken files as the
* data and also the RIFF chunk sizes are too small.
*
* @param dst file or other source to receive a stream of bytes
* @param info information about the file to be saved
* @param frame_size number of bytes per sample
*/
void fixAudiofileBrokenHeaderBug(QIODevice &dst, Kwave::FileInfo &info,
unsigned int frame_size);
private:
/** map for translating chunk names to FileInfo properties */
Kwave::WavPropertyMap m_property_map;
};
}
#endif /* WAV_ENCODER_H */
//***************************************************************************
//***************************************************************************
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