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/*
ZynAddSubFX - a software synthesizer
EffectMgr.C - Effect manager, an interface betwen the program and effects
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 <stdlib.h>
#include <stdio.h>
#include "EffectMgr.h"
#include "../Misc/Master.h"
EffectMgr::EffectMgr(int insertion_,Master* master_){
setpresettype("Peffect");
efx=NULL;
nefx=0;
insertion=insertion_;
master=master_;
efxoutl=new REALTYPE[SOUND_BUFFER_SIZE];
efxoutr=new REALTYPE[SOUND_BUFFER_SIZE];;
for (int i=0;i<SOUND_BUFFER_SIZE;i++){
efxoutl[i]=0.0;
efxoutr[i]=0.0;
};
filterpars=NULL;
dryonly=false;
defaults();
};
EffectMgr::~EffectMgr(){
if (efx!=NULL) delete (efx);
delete (efxoutl);
delete (efxoutr);
};
void EffectMgr::defaults(){
changeeffect(0);
setdryonly(false);
};
/*
* Change the effect
*/
void EffectMgr::changeeffect(int nefx_){
cleanup();
if (nefx==nefx_) return;
nefx=nefx_;
for (int i=0;i<SOUND_BUFFER_SIZE;i++){
efxoutl[i]=0.0;
efxoutr[i]=0.0;
};
if (efx!=NULL) delete (efx);
switch (nefx){
case 1:efx=new Reverb(insertion,efxoutl,efxoutr);break;
case 2:efx=new Echo(insertion,efxoutl,efxoutr);break;
case 3:efx=new Chorus(insertion,efxoutl,efxoutr);break;
case 4:efx=new Phaser(insertion,efxoutl,efxoutr);break;
case 5:efx=new Alienwah(insertion,efxoutl,efxoutr);break;
case 6:efx=new Distorsion(insertion,efxoutl,efxoutr);break;
case 7:efx=new EQ(insertion,efxoutl,efxoutr);break;
case 8:efx=new DynamicFilter(insertion,efxoutl,efxoutr);break;
//put more effect here
default:efx=NULL;break;//no effect (thru)
};
if (efx!=NULL) filterpars=efx->filterpars;
};
/*
* Obtain the effect number
*/
int EffectMgr::geteffect(){
return (nefx);
};
/*
* Cleanup the current effect
*/
void EffectMgr::cleanup(){
if (efx!=NULL) efx->cleanup();
};
/*
* Get the preset of the current effect
*/
unsigned char EffectMgr::getpreset(){
if (efx!=NULL) return(efx->Ppreset);
else return(0);
};
/*
* Change the preset of the current effect
*/
void EffectMgr::changepreset_nolock(unsigned char npreset){
if (efx!=NULL) efx->setpreset(npreset);
};
/*
* Change the preset of the current effect(with thread locking)
*/
void EffectMgr::changepreset(unsigned char npreset){
master->lock();
changepreset_nolock(npreset);
master->unlock();
};
/*
* Change a parameter of the current effect
*/
void EffectMgr::seteffectpar_nolock(int npar,unsigned char value){
if (efx==NULL) return;
efx->changepar(npar,value);
};
/*
* Change a parameter of the current effect (with thread locking)
*/
void EffectMgr::seteffectpar(int npar,unsigned char value){
master->lock();
seteffectpar_nolock(npar,value);
master->unlock();
};
/*
* Get a parameter of the current effect
*/
unsigned char EffectMgr::geteffectpar(int npar){
if (efx==NULL) return(0);
return(efx->getpar(npar));
};
/*
* Apply the effect
*/
void EffectMgr::out(REALTYPE *smpsl,REALTYPE *smpsr){
int i;
if (efx==NULL){
if (insertion==0)
for (i=0;i<SOUND_BUFFER_SIZE;i++){
smpsl[i]=0.0;smpsr[i]=0.0;
efxoutl[i]=0.0;efxoutr[i]=0.0;
};
return;
};
for (i=0;i<SOUND_BUFFER_SIZE;i++){
smpsl[i]+=denormalkillbuf[i];
smpsr[i]+=denormalkillbuf[i];
efxoutl[i]=0.0;
efxoutr[i]=0.0;
};
efx->out(smpsl,smpsr);
REALTYPE volume=efx->volume;
if (nefx==7){//this is need only for the EQ effect
for (i=0;i<SOUND_BUFFER_SIZE;i++){
smpsl[i]=efxoutl[i];
smpsr[i]=efxoutr[i];
};
return;
};
//Insertion effect
if (insertion!=0) {
REALTYPE v1,v2;
if (volume<0.5) {
v1=1.0;
v2=volume*2.0;
} else {
v1=(1.0-volume)*2.0;
v2=1.0;
};
if ((nefx==1)||(nefx==2)) v2*=v2;//for Reverb and Echo, the wet function is not liniar
if (dryonly){//this is used for instrument effect only
for (i=0;i<SOUND_BUFFER_SIZE;i++){
smpsl[i]*=v1;
smpsr[i]*=v1;
efxoutl[i]*=v2;
efxoutr[i]*=v2;
};
}else{//normal instrument/insertion effect
for (i=0;i<SOUND_BUFFER_SIZE;i++){
smpsl[i]=smpsl[i]*v1+efxoutl[i]*v2;
smpsr[i]=smpsr[i]*v1+efxoutr[i]*v2;
};
};
} else {//System effect
for (i=0;i<SOUND_BUFFER_SIZE;i++){
efxoutl[i]*=2.0*volume;
efxoutr[i]*=2.0*volume;
smpsl[i]=efxoutl[i];
smpsr[i]=efxoutr[i];
};
};
};
/*
* Get the effect volume for the system effect
*/
REALTYPE EffectMgr::sysefxgetvolume(){
if (efx==NULL) return (1.0);
else return(efx->outvolume);
};
/*
* Get the EQ response
*/
REALTYPE EffectMgr::getEQfreqresponse(REALTYPE freq){
if (nefx==7) return(efx->getfreqresponse(freq));
else return(0.0);
};
void EffectMgr::setdryonly(bool value){
dryonly=value;
};
void EffectMgr::add2XML(XMLwrapper *xml){
xml->addpar("type",geteffect());
if ((efx==NULL)||(geteffect()==0)) return;
xml->addpar("preset",efx->Ppreset);
xml->beginbranch("EFFECT_PARAMETERS");
for (int n=0;n<128;n++){
int par=geteffectpar(n);
if (par==0) continue;
xml->beginbranch("par_no",n);
xml->addpar("par",par);
xml->endbranch();
};
if (filterpars!=NULL){
xml->beginbranch("FILTER");
filterpars->add2XML(xml);
xml->endbranch();
};
xml->endbranch();
};
void EffectMgr::getfromXML(XMLwrapper *xml){
changeeffect(xml->getpar127("type",geteffect()));
if ((efx==NULL)||(geteffect()==0)) return;
efx->Ppreset=xml->getpar127("preset",efx->Ppreset);
if (xml->enterbranch("EFFECT_PARAMETERS")){
for (int n=0;n<128;n++){
seteffectpar_nolock(n,0);//erase effect parameter
if (xml->enterbranch("par_no",n)==0) continue;
int par=geteffectpar(n);
seteffectpar_nolock(n,xml->getpar127("par",par));
xml->exitbranch();
};
if (filterpars!=NULL){
if (xml->enterbranch("FILTER")){
filterpars->getfromXML(xml);
xml->exitbranch();
};
};
xml->exitbranch();
};
cleanup();
};
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