70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* Copyright 2009-2011 Jörg Hermann Müller
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*
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* This file is part of AudaSpace.
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*
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* Audaspace is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* AudaSpace is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Audaspace; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file audaspace/FX/AUD_AccumulatorFactory.h
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* \ingroup audfx
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*/
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#ifndef __AUD_ACCUMULATORFACTORY_H__
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#define __AUD_ACCUMULATORFACTORY_H__
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#include "AUD_EffectFactory.h"
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class AUD_CallbackIIRFilterReader;
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/**
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* This factory creates an accumulator reader.
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*
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* The accumulator adds the difference at the input to the last output in case
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* it's positive. In additive mode it additionaly adds the difference always.
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* So in case the difference is positive, it's added twice.
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*/
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class AUD_AccumulatorFactory : public AUD_EffectFactory
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{
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private:
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/**
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* Whether the accumulator is additive.
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*/
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const bool m_additive;
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// hide copy constructor and operator=
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AUD_AccumulatorFactory(const AUD_AccumulatorFactory&);
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AUD_AccumulatorFactory& operator=(const AUD_AccumulatorFactory&);
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public:
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/**
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* Creates a new accumulator factory.
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* \param factory The input factory.
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* \param additive Whether the accumulator is additive.
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*/
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AUD_AccumulatorFactory(boost::shared_ptr<AUD_IFactory> factory, bool additive = false);
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virtual boost::shared_ptr<AUD_IReader> createReader();
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static sample_t accumulatorFilterAdditive(AUD_CallbackIIRFilterReader* reader, void* useless);
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static sample_t accumulatorFilter(AUD_CallbackIIRFilterReader* reader, void* useless);
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};
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#endif //__AUD_ACCUMULATORFACTORY_H__
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