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authorRobert Jonsson <spamatica@gmail.com>2009-12-27 11:30:35 +0000
committerRobert Jonsson <spamatica@gmail.com>2009-12-27 11:30:35 +0000
commitb703eab295330e6f81564fbb39a10a1a2fdd2f54 (patch)
treee46b5c9a6bc22fd661c15d1d2123f5bf631cef80 /muse_qt4_evolution/synti/zynaddsubfx/Effects/EQ.C
parent5d5fa0fdf913907edbc3d2d29a7548f0cb658c94 (diff)
moved old qt4 branch
Diffstat (limited to 'muse_qt4_evolution/synti/zynaddsubfx/Effects/EQ.C')
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1 files changed, 198 insertions, 0 deletions
diff --git a/muse_qt4_evolution/synti/zynaddsubfx/Effects/EQ.C b/muse_qt4_evolution/synti/zynaddsubfx/Effects/EQ.C
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+++ b/muse_qt4_evolution/synti/zynaddsubfx/Effects/EQ.C
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+/*
+ ZynAddSubFX - a software synthesizer
+
+ EQ.C - EQ effect
+ Copyright (C) 2002-2005 Nasca Octavian Paul
+ Author: Nasca Octavian Paul
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of version 2 of the GNU General Public License
+ as published by the Free Software Foundation.
+
+ 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 (version 2) for more details.
+
+ You should have received a copy of the GNU General Public License (version 2)
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include "EQ.h"
+
+EQ::EQ(int insertion_,REALTYPE *efxoutl_,REALTYPE *efxoutr_){
+ efxoutl=efxoutl_;
+ efxoutr=efxoutr_;
+ insertion=insertion_;
+ filterpars=NULL;
+
+ for (int i=0;i<MAX_EQ_BANDS;i++){
+ filter[i].Ptype=0;
+ filter[i].Pfreq=64;
+ filter[i].Pgain=64;
+ filter[i].Pq=64;
+ filter[i].Pstages=0;
+ filter[i].l=new AnalogFilter(6,1000.0,1.0,0);
+ filter[i].r=new AnalogFilter(6,1000.0,1.0,0);
+ };
+ //default values
+ Ppreset=0;
+ Pvolume=50;
+
+ setpreset(Ppreset);
+ cleanup();
+};
+
+EQ::~EQ(){
+};
+
+/*
+ * Cleanup the effect
+ */
+void EQ::cleanup(){
+ for (int i=0;i<MAX_EQ_BANDS;i++){
+ filter[i].l->cleanup();
+ filter[i].r->cleanup();
+ };
+};
+
+
+
+/*
+ * Effect output
+ */
+void EQ::out(REALTYPE *smpsl,REALTYPE *smpsr){
+ int i;
+ for (i=0;i<SOUND_BUFFER_SIZE;i++){
+ efxoutl[i]=smpsl[i]*volume;
+ efxoutr[i]=smpsr[i]*volume;
+ };
+
+ for (i=0;i<MAX_EQ_BANDS;i++){
+ if (filter[i].Ptype==0) continue;
+ filter[i].l->filterout(efxoutl);
+ filter[i].r->filterout(efxoutr);
+ };
+};
+
+
+/*
+ * Parameter control
+ */
+void EQ::setvolume(unsigned char Pvolume){
+ this->Pvolume=Pvolume;
+
+ outvolume=pow(0.005,(1.0-Pvolume/127.0))*10.0;
+ if (insertion==0) {
+ volume=1.0;
+ } else {
+ volume=outvolume;
+ };
+
+};
+
+
+void EQ::setpreset(unsigned char npreset){
+ const int PRESET_SIZE=1;
+ const int NUM_PRESETS=2;
+ unsigned char presets[NUM_PRESETS][PRESET_SIZE]={
+ //EQ 1
+ {67},
+ //EQ 2
+ {67}};
+
+ if (npreset>=NUM_PRESETS) npreset=NUM_PRESETS-1;
+ for (int n=0;n<PRESET_SIZE;n++) changepar(n,presets[npreset][n]);
+ Ppreset=npreset;
+};
+
+
+void EQ::changepar(int npar,unsigned char value){
+ switch (npar){
+ case 0: setvolume(value);
+ break;
+ };
+ if (npar<10) return;
+
+ int nb=(npar-10)/5;//number of the band (filter)
+ if (nb>=MAX_EQ_BANDS) return;
+ int bp=npar%5;//band paramenter
+
+ REALTYPE tmp;
+ switch(bp){
+ case 0: if (value>9) value=0;//has to be changed if more filters will be added
+ filter[nb].Ptype=value;
+ if (value!=0){
+ filter[nb].l->settype(value-1);
+ filter[nb].r->settype(value-1);
+ };
+ break;
+ case 1: filter[nb].Pfreq=value;
+ tmp=600.0*pow(30.0,(value-64.0)/64.0);
+ filter[nb].l->setfreq(tmp);
+ filter[nb].r->setfreq(tmp);
+ break;
+ case 2: filter[nb].Pgain=value;
+ tmp=30.0*(value-64.0)/64.0;
+ filter[nb].l->setgain(tmp);
+ filter[nb].r->setgain(tmp);
+ break;
+ case 3: filter[nb].Pq=value;
+ tmp=pow(30.0,(value-64.0)/64.0);
+ filter[nb].l->setq(tmp);
+ filter[nb].r->setq(tmp);
+ break;
+ case 4: if (value>=MAX_FILTER_STAGES) value=MAX_FILTER_STAGES-1;
+ filter[nb].Pstages=value;
+ filter[nb].l->setstages(value);
+ filter[nb].r->setstages(value);
+ break;
+ };
+};
+
+unsigned char EQ::getpar(int npar){
+ switch (npar){
+ case 0: return(Pvolume);
+ break;
+ };
+
+ if (npar<10) return(0);
+
+ int nb=(npar-10)/5;//number of the band (filter)
+ if (nb>=MAX_EQ_BANDS) return(0);
+ int bp=npar%5;//band paramenter
+ switch(bp){
+ case 0: return(filter[nb].Ptype);
+ break;
+ case 1: return(filter[nb].Pfreq);
+ break;
+ case 2: return(filter[nb].Pgain);
+ break;
+ case 3: return(filter[nb].Pq);
+ break;
+ case 4: return(filter[nb].Pstages);
+ break;
+ };
+
+ return(0);//in case of bogus parameter number
+};
+
+
+
+
+REALTYPE EQ::getfreqresponse(REALTYPE freq){
+ REALTYPE resp=1.0;
+
+ for (int i=0;i<MAX_EQ_BANDS;i++){
+ if (filter[i].Ptype==0) continue;
+ resp*=filter[i].l->H(freq);
+ };
+ return(rap2dB(resp*outvolume));
+};
+
+