/* * eqeffect.cpp - defination of EqEffect class. * * Copyright (c) 2014 David French * * This file is part of LMMS - http://lmms.io * * This program 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. * * This program 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 this program (see COPYING); if not, write to the * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301 USA. * */ #include "EqEffect.h" #include "embed.cpp" #include "lmms_math.h" #include "BasicFilters.h" #include "interpolation.h" #include "Engine.h" #include "MainWindow.h" #include "EqFader.h" extern "C" { Plugin::Descriptor PLUGIN_EXPORT eq_plugin_descriptor = { STRINGIFY( PLUGIN_NAME ), "Equalizer", QT_TRANSLATE_NOOP( "pluginBrowser", "A native eq plugin" ), "Dave French ", 0x0100, Plugin::Effect, new PluginPixmapLoader( "logo" ), NULL, NULL } ; } EqEffect::EqEffect(Model *parent, const Plugin::Descriptor::SubPluginFeatures::Key *key) : Effect( &eq_plugin_descriptor, parent, key ), m_eqControls( this ), m_inGain( 1.0 ), m_outGain( 1.0 ) { } EqEffect::~EqEffect() { } bool EqEffect::processAudioBuffer(sampleFrame *buf, const fpp_t frames) { if( !isEnabled() || !isRunning () ) { return( false ); } if( m_eqControls.m_outGainModel.isValueChanged() ) { m_outGain = dbvToAmp(m_eqControls.m_outGainModel.value()); } if( m_eqControls.m_inGainModel.isValueChanged() ) { m_inGain = dbvToAmp(m_eqControls.m_inGainModel.value()); } m_eqControls.m_inProgress = true; double outSum = 0.0; for( fpp_t f = 0; f < frames; ++f ) { outSum += buf[f][0]*buf[f][0] + buf[f][1]*buf[f][1]; } const float outGain = m_outGain; const int sampleRate = Engine::mixer()->processingSampleRate(); sampleFrame m_inPeak = { 0, 0 }; if(m_eqControls.m_analyseIn ) { m_eqControls.m_inFftBands.analyze( buf, frames ); } else { m_eqControls.m_inFftBands.clear(); } gain(buf , frames, m_inGain , &m_inPeak ); m_eqControls.m_inPeakL = m_eqControls.m_inPeakL < m_inPeak[0] ? m_inPeak[0] : m_eqControls.m_inPeakL; m_eqControls.m_inPeakR = m_eqControls.m_inPeakR < m_inPeak[1] ? m_inPeak[1] : m_eqControls.m_inPeakR; if(m_eqControls.m_hpActiveModel.value() ){ m_hp12.setParameters( sampleRate, m_eqControls.m_hpFeqModel.value(), m_eqControls.m_hpResModel.value(), 1 ); m_hp12.processBuffer( buf, frames ); if( m_eqControls.m_hp24Model.value() || m_eqControls.m_hp48Model.value() ) { m_hp24.setParameters( sampleRate, m_eqControls.m_hpFeqModel.value(), m_eqControls.m_hpResModel.value(), 1 ); m_hp24.processBuffer( buf, frames ); } if( m_eqControls.m_hp48Model.value() ) { m_hp480.setParameters( sampleRate, m_eqControls.m_hpFeqModel.value(), m_eqControls.m_hpResModel.value(), 1 ); m_hp480.processBuffer( buf, frames ); m_hp481.setParameters( sampleRate, m_eqControls.m_hpFeqModel.value(), m_eqControls.m_hpResModel.value(), 1 ); m_hp481.processBuffer( buf, frames ); } } if( m_eqControls.m_lowShelfActiveModel.value() ) { m_lowShelf.setParameters( sampleRate, m_eqControls.m_lowShelfFreqModel.value(), m_eqControls.m_lowShelfResModel .value(), m_eqControls.m_lowShelfGainModel.value() ); m_lowShelf.processBuffer( buf, frames ); } if( m_eqControls.m_para1ActiveModel.value() ) { m_para1.setParameters( sampleRate, m_eqControls.m_para1FreqModel.value(), m_eqControls.m_para1BwModel.value(), m_eqControls.m_para1GainModel.value() ); m_para1.processBuffer( buf, frames ); } if( m_eqControls.m_para2ActiveModel.value() ) { m_para2.setParameters( sampleRate, m_eqControls.m_para2FreqModel.value(), m_eqControls.m_para2BwModel.value(), m_eqControls.m_para2GainModel.value() ); m_para2.processBuffer( buf, frames ); } if( m_eqControls.m_para3ActiveModel.value() ) { m_para3.setParameters( sampleRate, m_eqControls.m_para3FreqModel.value(), m_eqControls.m_para3BwModel.value(), m_eqControls.m_para3GainModel.value() ); m_para3.processBuffer( buf, frames ); } if( m_eqControls.m_para4ActiveModel.value() ) { m_para4.setParameters( sampleRate, m_eqControls.m_para4FreqModel.value(), m_eqControls.m_para4BwModel.value(), m_eqControls.m_para4GainModel.value() ); m_para4.processBuffer( buf, frames ); } if( m_eqControls.m_highShelfActiveModel.value() ) { m_highShelf.setParameters( sampleRate, m_eqControls.m_highShelfFreqModel.value(), m_eqControls.m_highShelfResModel.value(), m_eqControls.m_highShelfGainModel.value()); m_highShelf.processBuffer( buf, frames ); } if(m_eqControls.m_lpActiveModel.value() ){ m_lp12.setParameters( sampleRate, m_eqControls.m_lpFreqModel.value(), m_eqControls.m_lpResModel.value(), 1 ); m_lp12.processBuffer( buf, frames ); if( m_eqControls.m_lp24Model.value() || m_eqControls.m_lp48Model.value() ) { m_lp24.setParameters( sampleRate, m_eqControls.m_lpFreqModel.value(), m_eqControls.m_lpResModel.value(), 1 ); m_lp24.processBuffer( buf, frames ); } if( m_eqControls.m_lp48Model.value() ) { m_lp480.setParameters( sampleRate, m_eqControls.m_lpFreqModel.value(), m_eqControls.m_lpResModel.value(), 1 ); m_lp480.processBuffer( buf, frames ); m_lp481.setParameters( sampleRate, m_eqControls.m_lpFreqModel.value(), m_eqControls.m_lpResModel.value(), 1 ); m_lp481.processBuffer( buf, frames ); } } sampleFrame outPeak = { 0, 0 }; gain( buf, frames, outGain, &outPeak ); m_eqControls.m_outPeakL = m_eqControls.m_outPeakL < outPeak[0] ? outPeak[0] : m_eqControls.m_outPeakL; m_eqControls.m_outPeakR = m_eqControls.m_outPeakR < outPeak[1] ? outPeak[1] : m_eqControls.m_outPeakR; checkGate( outSum / frames ); if(m_eqControls.m_analyseOut ) { m_eqControls.m_outFftBands.analyze( buf, frames ); setBandPeaks( &m_eqControls.m_outFftBands , ( int )( sampleRate * 0.5 ) ); } else { m_eqControls.m_outFftBands.clear(); } m_eqControls.m_inProgress = false; return isRunning(); } float EqEffect::peakBand( float minF, float maxF, EqAnalyser *fft, int sr ) { float peak = -60; float * b = fft->m_bands; float h = 0; for(int x = 0; x < MAX_BANDS; x++, b++) { if( bandToFreq( x ,sr) >= minF && bandToFreq( x,sr ) <= maxF ) { h = 20*( log10( *b / fft->m_energy ) ); peak = h > peak ? h : peak; } } return (peak+100)/100; } void EqEffect::setBandPeaks(EqAnalyser *fft, int samplerate ) { m_eqControls.m_lowShelfPeakR = m_eqControls.m_lowShelfPeakL = peakBand( 0, m_eqControls.m_lowShelfFreqModel.value(), fft , samplerate ); m_eqControls.m_para1PeakL = m_eqControls.m_para1PeakR = peakBand( m_eqControls.m_para1FreqModel.value() - (m_eqControls.m_para1FreqModel.value() * m_eqControls.m_para1BwModel.value() * 0.5), m_eqControls.m_para1FreqModel.value() + (m_eqControls.m_para1FreqModel.value() * m_eqControls.m_para1BwModel.value() * 0.5), fft , samplerate ); m_eqControls.m_para2PeakL = m_eqControls.m_para2PeakR = peakBand( m_eqControls.m_para2FreqModel.value() - (m_eqControls.m_para2FreqModel.value() * m_eqControls.m_para2BwModel.value() * 0.5), m_eqControls.m_para2FreqModel.value() + (m_eqControls.m_para2FreqModel.value() * m_eqControls.m_para2BwModel.value() * 0.5), fft , samplerate ); m_eqControls.m_para3PeakL = m_eqControls.m_para3PeakR = peakBand( m_eqControls.m_para3FreqModel.value() - (m_eqControls.m_para3FreqModel.value() * m_eqControls.m_para3BwModel.value() * 0.5), m_eqControls.m_para3FreqModel.value() + (m_eqControls.m_para3FreqModel.value() * m_eqControls.m_para3BwModel.value() * 0.5), fft , samplerate ); m_eqControls.m_para4PeakL = m_eqControls.m_para4PeakR = peakBand( m_eqControls.m_para4FreqModel.value() - (m_eqControls.m_para4FreqModel.value() * m_eqControls.m_para4BwModel.value() * 0.5), m_eqControls.m_para4FreqModel.value() + (m_eqControls.m_para4FreqModel.value() * m_eqControls.m_para4BwModel.value() * 0.5), fft , samplerate ); m_eqControls.m_highShelfPeakL = m_eqControls.m_highShelfPeakR = peakBand( m_eqControls.m_highShelfFreqModel.value(), samplerate * 0.5 , fft, samplerate ); } extern "C" { //needed for getting plugin out of shared lib Plugin * PLUGIN_EXPORT lmms_plugin_main( Model* parent, void* data ) { return new EqEffect( parent , static_cast( data ) ); } }