8c68ed6df1
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61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
/*
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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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/** \file audaspace/FX/AUD_AccumulatorFactory.cpp
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* \ingroup audfx
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*/
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#include "AUD_AccumulatorFactory.h"
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#include "AUD_CallbackIIRFilterReader.h"
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sample_t AUD_AccumulatorFactory::accumulatorFilterAdditive(AUD_CallbackIIRFilterReader* reader, void* useless)
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{
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float in = reader->x(0);
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float lastin = reader->x(-1);
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float out = reader->y(-1) + in - lastin;
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if(in > lastin)
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out += in - lastin;
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return out;
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}
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sample_t AUD_AccumulatorFactory::accumulatorFilter(AUD_CallbackIIRFilterReader* reader, void* useless)
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{
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float in = reader->x(0);
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float lastin = reader->x(-1);
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float out = reader->y(-1);
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if(in > lastin)
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out += in - lastin;
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return out;
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}
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AUD_AccumulatorFactory::AUD_AccumulatorFactory(boost::shared_ptr<AUD_IFactory> factory,
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bool additive) :
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AUD_EffectFactory(factory),
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m_additive(additive)
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{
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}
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boost::shared_ptr<AUD_IReader> AUD_AccumulatorFactory::createReader()
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{
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return boost::shared_ptr<AUD_IReader>(new AUD_CallbackIIRFilterReader(getReader(), 2, 2,
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m_additive ? accumulatorFilterAdditive : accumulatorFilter));
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}
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