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/*
* ***** 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 *****
*/
/** \file audaspace/intern/AUD_LinearResampleReader.h
* \ingroup audaspaceintern
*/
#ifndef __AUD_LINEARRESAMPLEREADER_H__
#define __AUD_LINEARRESAMPLEREADER_H__
#include "AUD_ResampleReader.h"
#include "AUD_Buffer.h"
/**
* This resampling reader does simple first-order hold resampling.
*/
class AUD_LinearResampleReader : public AUD_ResampleReader
{
private:
/**
* The reader channels.
*/
AUD_Channels m_channels;
/**
* The position in the cache.
*/
float m_cache_pos;
/**
* The sound output buffer.
*/
AUD_Buffer m_buffer;
/**
* The input caching buffer.
*/
AUD_Buffer m_cache;
/**
* Whether the cache contains valid data.
*/
bool m_cache_ok;
// hide copy constructor and operator=
AUD_LinearResampleReader(const AUD_LinearResampleReader&);
AUD_LinearResampleReader& operator=(const AUD_LinearResampleReader&);
public:
/**
* Creates a resampling reader.
* \param reader The reader to mix.
* \param specs The target specification.
*/
AUD_LinearResampleReader(boost::shared_ptr<AUD_IReader> reader, AUD_Specs specs);
virtual void seek(int position);
virtual int getLength() const;
virtual int getPosition() const;
virtual AUD_Specs getSpecs() const;
virtual void read(int& length, bool& eos, sample_t* buffer);
};
#endif //__AUD_LINEARRESAMPLEREADER_H__
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