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/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 Jörg Hermann Müller
*
* This file is part of AudaSpace.
*
* Audaspace 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.
*
* AudaSpace is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef AUD_SRCRESAMPLEREADER
#define AUD_SRCRESAMPLEREADER
#include "AUD_EffectReader.h"
#include "AUD_Buffer.h"
#include <samplerate.h>
/**
* This resampling reader uses libsamplerate for resampling.
*/
class AUD_SRCResampleReader : public AUD_EffectReader
{
private:
/**
* The sample specification of the source.
*/
const AUD_Specs m_sspecs;
/**
* The resampling factor.
*/
const double m_factor;
/**
* The sound output buffer.
*/
AUD_Buffer m_buffer;
/**
* The target specification.
*/
AUD_Specs m_tspecs;
/**
* The src state structure.
*/
SRC_STATE* m_src;
/**
* The current playback position;
*/
int m_position;
// hide copy constructor and operator=
AUD_SRCResampleReader(const AUD_SRCResampleReader&);
AUD_SRCResampleReader& operator=(const AUD_SRCResampleReader&);
public:
/**
* Creates a resampling reader.
* \param reader The reader to mix.
* \param specs The target specification.
* \exception AUD_Exception Thrown if the source specification cannot be
* resampled to the target specification.
*/
AUD_SRCResampleReader(AUD_IReader* reader, AUD_Specs specs);
/**
* Destroys the reader.
*/
~AUD_SRCResampleReader();
/**
* The callback function for SRC.
* \warning Do not call!
* \param data The pointer to the float data.
* \return The count of samples in the float data.
*/
long doCallback(float** data);
virtual void seek(int position);
virtual int getLength() const;
virtual int getPosition() const;
virtual AUD_Specs getSpecs() const;
virtual void read(int & length, sample_t* & buffer);
};
#endif //AUD_SRCRESAMPLEREADER
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