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/*
* $Id$
*
* ***** BEGIN LGPL LICENSE BLOCK *****
*
* Copyright 2009 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 Lesser General Public License as published by
* the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
*
* ***** END LGPL LICENSE BLOCK *****
*/
#ifndef AUD_ACCUMULATORREADER
#define AUD_ACCUMULATORREADER
#include "AUD_EffectReader.h"
#include "AUD_Buffer.h"
/**
* This class represents an accumulator.
*/
class AUD_AccumulatorReader : public AUD_EffectReader
{
private:
/**
* Whether the accumulator is additive.
*/
const bool m_additive;
/**
* The playback buffer.
*/
AUD_Buffer m_buffer;
/**
* The sums of the specific channels.
*/
AUD_Buffer m_sums;
/**
* The previous results of the specific channels.
*/
AUD_Buffer m_prevs;
// hide copy constructor and operator=
AUD_AccumulatorReader(const AUD_AccumulatorReader&);
AUD_AccumulatorReader& operator=(const AUD_AccumulatorReader&);
public:
/**
* Creates a new accumulator reader.
* \param reader The reader to read from.
* \param additive Whether the accumulator is additive.
*/
AUD_AccumulatorReader(AUD_IReader* reader, bool additive);
virtual void read(int & length, sample_t* & buffer);
};
#endif //AUD_ACCUMULATORREADER
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