forked from bartvdbraak/blender
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
/*
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* $Id$
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*
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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_SquareFactory.cpp
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* \ingroup audfx
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*/
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#include "AUD_SquareFactory.h"
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#include "AUD_CallbackIIRFilterReader.h"
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sample_t AUD_SquareFactory::squareFilter(AUD_CallbackIIRFilterReader* reader, float* threshold)
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{
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float in = reader->x(0);
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if(in >= *threshold)
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return 1;
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else if(in <= -*threshold)
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return -1;
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else
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return 0;
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}
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void AUD_SquareFactory::endSquareFilter(float* threshold)
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{
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delete threshold;
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}
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AUD_SquareFactory::AUD_SquareFactory(AUD_Reference<AUD_IFactory> factory, float threshold) :
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AUD_EffectFactory(factory),
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m_threshold(threshold)
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{
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}
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float AUD_SquareFactory::getThreshold() const
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{
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return m_threshold;
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}
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AUD_Reference<AUD_IReader> AUD_SquareFactory::createReader()
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{
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return new AUD_CallbackIIRFilterReader(getReader(), 1, 1,
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(doFilterIIR) squareFilter,
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(endFilterIIR) endSquareFilter,
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new float(m_threshold));
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}
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