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108 lines
2.4 KiB
C++
108 lines
2.4 KiB
C++
/* eqeffect.h - defination of EqEffect class.
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*
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* Copyright (c) 2014 David French <dave/dot/french3/at/googlemail/dot/com>
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*
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* This file is part of LMMS - http://lmms.io
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program 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 GNU
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* 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
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef EQEFFECT_H
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#define EQEFFECT_H
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#include "Effect.h"
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#include "EqControls.h"
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#include "lmms_math.h"
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#include "BasicFilters.h"
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#include "EqFilter.h"
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class EqEffect : public Effect
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{
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public:
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EqEffect( Model* parent , const Descriptor::SubPluginFeatures::Key* key );
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virtual ~EqEffect();
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virtual bool processAudioBuffer( sampleFrame *buf, const fpp_t frames );
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virtual EffectControls* controls()
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{
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return &m_eqControls;
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}
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inline void gain( sampleFrame *buf, const fpp_t frames, float scale, sampleFrame* peak )
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{
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peak[0][0] = 0.0f; peak[0][1] = 0.0f;
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for( fpp_t f = 0; f < frames; ++f )
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{
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buf[f][0] *= scale;
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buf[f][1] *= scale;
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if( fabs( buf[f][0] ) > peak[0][0] )
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{
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peak[0][0] = fabs( buf[f][0] );
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}
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if( fabs( buf[f][1] ) > peak[0][1] )
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{
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peak[0][1] = fabs( buf[f][0] );
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}
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}
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}
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private:
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EqControls m_eqControls;
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EqHp12Filter m_hp12;
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EqHp12Filter m_hp24;
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EqHp12Filter m_hp480;
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EqHp12Filter m_hp481;
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EqLowShelfFilter m_lowShelf;
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EqPeakFilter m_para1;
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EqPeakFilter m_para2;
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EqPeakFilter m_para3;
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EqPeakFilter m_para4;
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EqHighShelfFilter m_highShelf;
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EqLp12Filter m_lp12;
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EqLp12Filter m_lp24;
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EqLp12Filter m_lp480;
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EqLp12Filter m_lp481;
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float m_inGain;
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float m_outGain;
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void analyze( sampleFrame *buf, const fpp_t frames, EqAnalyser* fft );
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float peakBand(float minF, float maxF,EqAnalyser*, int);
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inline float bandToFreq ( int index , int sampleRate )
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{
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return index * sampleRate / (MAX_BANDS * 2);
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}
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void setBandPeaks( EqAnalyser *fft , int);
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};
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#endif // EQEFFECT_H
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