diff options
Diffstat (limited to 'intern/audaspace/FX/AUD_IIRFilterReader.cpp')
-rw-r--r-- | intern/audaspace/FX/AUD_IIRFilterReader.cpp | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/intern/audaspace/FX/AUD_IIRFilterReader.cpp b/intern/audaspace/FX/AUD_IIRFilterReader.cpp deleted file mode 100644 index 9e9a3599d82..00000000000 --- a/intern/audaspace/FX/AUD_IIRFilterReader.cpp +++ /dev/null @@ -1,61 +0,0 @@ -/* - * 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. - */ - -/** \file audaspace/FX/AUD_IIRFilterReader.cpp - * \ingroup audfx - */ - - -#include "AUD_IIRFilterReader.h" - -AUD_IIRFilterReader::AUD_IIRFilterReader(boost::shared_ptr<AUD_IReader> reader, - const std::vector<float>& b, - const std::vector<float>& a) : - AUD_BaseIIRFilterReader(reader, b.size(), a.size()), m_a(a), m_b(b) -{ - if(m_a.empty() == false) - { - for(int i = 1; i < m_a.size(); i++) - m_a[i] /= m_a[0]; - for(int i = 0; i < m_b.size(); i++) - m_b[i] /= m_a[0]; - m_a[0] = 1; - } -} - -sample_t AUD_IIRFilterReader::filter() -{ - sample_t out = 0; - - for(int i = 1; i < m_a.size(); i++) - out -= y(-i) * m_a[i]; - for(int i = 0; i < m_b.size(); i++) - out += x(-i) * m_b[i]; - - return out; -} - -void AUD_IIRFilterReader::setCoefficients(const std::vector<float>& b, - const std::vector<float>& a) -{ - setLengths(b.size(), a.size()); - m_a = a; - m_b = b; -} |