From b703eab295330e6f81564fbb39a10a1a2fdd2f54 Mon Sep 17 00:00:00 2001
From: Robert Jonsson <spamatica@gmail.com>
Date: Sun, 27 Dec 2009 11:30:35 +0000
Subject: moved old qt4 branch

---
 .../synti/zynaddsubfx/Misc/Microtonal.C            | 514 +++++++++++++++++++++
 1 file changed, 514 insertions(+)
 create mode 100644 muse_qt4_evolution/synti/zynaddsubfx/Misc/Microtonal.C

(limited to 'muse_qt4_evolution/synti/zynaddsubfx/Misc/Microtonal.C')

diff --git a/muse_qt4_evolution/synti/zynaddsubfx/Misc/Microtonal.C b/muse_qt4_evolution/synti/zynaddsubfx/Misc/Microtonal.C
new file mode 100644
index 00000000..30a3a71e
--- /dev/null
+++ b/muse_qt4_evolution/synti/zynaddsubfx/Misc/Microtonal.C
@@ -0,0 +1,514 @@
+/*
+  ZynAddSubFX - a software synthesizer
+ 
+  Microtonal.C - Tuning settings and microtonal capabilities
+  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 <math.h>
+#include <string.h>
+#include "Microtonal.h"
+
+#define MAX_LINE_SIZE 80
+
+Microtonal::Microtonal(){
+    Pname=new unsigned char[MICROTONAL_MAX_NAME_LEN];
+    Pcomment=new unsigned char[MICROTONAL_MAX_NAME_LEN];
+    defaults();
+};
+
+void Microtonal::defaults(){
+    Pinvertupdown=0;
+    Pinvertupdowncenter=60;
+    octavesize=12;
+    Penabled=0;
+    PAnote=69;
+    PAfreq=440.0;
+    Pscaleshift=64;
+    
+    Pfirstkey=0;Plastkey=127;
+    Pmiddlenote=60;Pmapsize=12;
+    Pmappingenabled=0;
+    
+    for (int i=0;i<128;i++) Pmapping[i]=i;
+    
+    for (int i=0;i<MAX_OCTAVE_SIZE;i++){
+	octave[i].tuning=tmpoctave[i].tuning=pow(2,(i%octavesize+1)/12.0);
+	octave[i].type=tmpoctave[i].type=1;
+	octave[i].x1=tmpoctave[i].x1=(i%octavesize+1)*100;
+	octave[i].x2=tmpoctave[i].x2=0;
+    };
+    octave[11].type=2;octave[11].x1=2;octave[11].x2=1;
+    for (int i=0;i<MICROTONAL_MAX_NAME_LEN;i++){
+	Pname[i]='\0';
+	Pcomment[i]='\0';
+    };
+    snprintf((char *) Pname,MICROTONAL_MAX_NAME_LEN,"12tET");
+    snprintf((char *) Pcomment,MICROTONAL_MAX_NAME_LEN,"Equal Temperament 12 notes per octave");    
+    Pglobalfinedetune=64;
+};
+
+Microtonal::~Microtonal(){
+    delete (Pname);
+    delete (Pcomment);
+};
+
+/*
+ * Get the size of the octave
+ */
+unsigned char Microtonal::getoctavesize(){
+    if (Penabled!=0) return(octavesize);
+	else return(12);
+};
+
+/*
+ * Get the frequency according the note number
+ */
+REALTYPE Microtonal::getnotefreq(int note,int keyshift){
+    // in this function will appears many times things like this:
+    // var=(a+b*100)%b 
+    // I had written this way because if I use var=a%b gives unwanted results when a<0
+    // This is the same with divisions.
+    
+    if ((Pinvertupdown!=0)&&((Pmappingenabled==0)||(Penabled==0))) note=(int) Pinvertupdowncenter*2-note;
+
+    //compute global fine detune
+    REALTYPE globalfinedetunerap=pow(2.0,(Pglobalfinedetune-64.0)/1200.0);//-64.0 .. 63.0 cents
+        
+    if (Penabled==0) return(pow(2.0,(note-PAnote+keyshift)/12.0)*PAfreq*globalfinedetunerap);//12tET
+    
+    int scaleshift=((int)Pscaleshift-64+(int) octavesize*100)%octavesize;
+
+    //compute the keyshift
+    REALTYPE rap_keyshift=1.0;
+    if (keyshift!=0){
+	int kskey=(keyshift+(int)octavesize*100)%octavesize;
+	int ksoct=(keyshift+(int)octavesize*100)/octavesize-100;
+	rap_keyshift=(kskey==0) ? (1.0):(octave[kskey-1].tuning);
+	rap_keyshift*=pow(octave[octavesize-1].tuning,ksoct);
+    };
+
+    //if the mapping is enabled
+    if (Pmappingenabled!=0){
+	if ((note<Pfirstkey)||(note>Plastkey)) return (-1.0);
+	//Compute how many mapped keys are from middle note to reference note
+	//and find out the proportion between the freq. of middle note and "A" note
+	int tmp=PAnote-Pmiddlenote,minus=0;
+	if (tmp<0) { tmp=-tmp; minus=1; };
+	int deltanote=0;
+	for (int i=0;i<tmp;i++) if (Pmapping[i%Pmapsize]>=0) deltanote++;
+	REALTYPE rap_anote_middlenote=(deltanote==0) ? (1.0) : (octave[(deltanote-1)%octavesize].tuning);
+	if (deltanote!=0) rap_anote_middlenote*=pow(octave[octavesize-1].tuning,(deltanote-1)/octavesize);
+	if (minus!=0) rap_anote_middlenote=1.0/rap_anote_middlenote;
+	
+	//Convert from note (midi) to degree (note from the tunning)
+	int degoct=(note-(int)Pmiddlenote+(int) Pmapsize*200)/(int)Pmapsize-200;
+	int degkey=(note-Pmiddlenote+(int)Pmapsize*100)%Pmapsize;
+	degkey=Pmapping[degkey];
+	if (degkey<0) return(-1.0);//this key is not mapped
+	
+	//invert the keyboard upside-down if it is asked for
+	//TODO: do the right way by using Pinvertupdowncenter
+	if (Pinvertupdown!=0){
+	    degkey=octavesize-degkey-1;
+	    degoct=-degoct;
+	};
+	//compute the frequency of the note
+	degkey=degkey+scaleshift;
+	degoct+=degkey/octavesize;
+	degkey%=octavesize;
+
+	REALTYPE freq=(degkey==0) ? (1.0):octave[degkey-1].tuning;
+	freq*=pow(octave[octavesize-1].tuning,degoct);
+	freq*=PAfreq/rap_anote_middlenote;
+	freq*=globalfinedetunerap;
+	if (scaleshift!=0) freq/=octave[scaleshift-1].tuning;
+	return(freq*rap_keyshift);
+    } else {//if the mapping is disabled
+	int nt=note-PAnote+scaleshift;
+	int ntkey=(nt+(int)octavesize*100)%octavesize;
+	int ntoct=(nt-ntkey)/octavesize;    
+    
+	REALTYPE oct=octave[octavesize-1].tuning;
+	REALTYPE freq=octave[(ntkey+octavesize-1)%octavesize].tuning*pow(oct,ntoct)*PAfreq;
+	if (ntkey==0) freq/=oct;
+        if (scaleshift!=0) freq/=octave[scaleshift-1].tuning;
+//	fprintf(stderr,"note=%d freq=%.3f cents=%d\n",note,freq,(int)floor(log(freq/PAfreq)/log(2.0)*1200.0+0.5));
+	freq*=globalfinedetunerap;
+    	return(freq*rap_keyshift);
+    };
+};
+
+
+/*
+ * Convert a line to tunings; returns -1 if it ok
+ */
+int Microtonal::linetotunings(unsigned int nline,const char *line){
+    int x1=-1,x2=-1,type=-1;
+    REALTYPE x=-1.0,tmp,tuning=1.0;
+    if (strstr(line,"/")==NULL){
+	if (strstr(line,".")==NULL){// M case (M=M/1)
+	    sscanf(line,"%d",&x1);
+	    x2=1;
+	    type=2;//division
+	} else {// float number case
+    	    sscanf(line,"%f",&x);
+	    if (x<0.000001) return(1);
+	    type=1;//float type(cents)
+	};
+    } else {// M/N case
+	sscanf(line,"%d/%d",&x1,&x2);
+	if ((x1<0)||(x2<0)) return(1);
+	if (x2==0) x2=1;
+	type=2;//division
+    };
+    
+    if (x1<=0) x1=1;//not allow zero frequency sounds (consider 0 as 1)
+    
+    //convert to float if the number are too big
+    if ((type==2)&&((x1>(128*128*128-1))||(x2>(128*128*128-1)))){
+	type=1;
+	x=((REALTYPE) x1)/x2;
+    };
+    switch (type){
+	case 1:	x1=(int) floor(x);
+		tmp=fmod(x,1.0);
+		x2=(int) (floor (tmp*1e6));
+		tuning=pow(2.0,x/1200.0);
+		break;
+	case 2:	x=((REALTYPE)x1)/x2;
+		tuning=x;
+		break;
+    };
+    
+    tmpoctave[nline].tuning=tuning;
+    tmpoctave[nline].type=type;
+    tmpoctave[nline].x1=x1;
+    tmpoctave[nline].x2=x2;
+    
+    return(-1);//ok
+};
+
+/*
+ * Convert the text to tunnings
+ */
+int Microtonal::texttotunings(const char *text){
+    unsigned int i,k=0,nl=0;
+    char *lin;
+    lin=new char[MAX_LINE_SIZE+1];
+    while (k<strlen(text)){
+	for (i=0;i<MAX_LINE_SIZE;i++){
+	    lin[i]=text[k++];
+	    if (lin[i]<0x20) break;
+	};
+	lin[i]='\0';
+	if (strlen(lin)==0) continue;
+	int err=linetotunings(nl,lin);
+	if (err!=-1) {
+	    delete [] lin;
+	    return(nl);//Parse error
+	};
+	nl++;
+    };
+    delete [] lin;
+    if (nl>MAX_OCTAVE_SIZE) nl=MAX_OCTAVE_SIZE;
+    if (nl==0) return(-2);//the input is empty
+    octavesize=nl;
+    for (i=0;i<octavesize;i++){
+	octave[i].tuning=tmpoctave[i].tuning;
+	octave[i].type=tmpoctave[i].type;
+	octave[i].x1=tmpoctave[i].x1;
+	octave[i].x2=tmpoctave[i].x2;
+    };
+    return(-1);//ok
+};
+
+/*
+ * Convert the text to mapping
+ */
+void Microtonal::texttomapping(const char *text){
+    unsigned int i,k=0;
+    char *lin;
+    lin=new char[MAX_LINE_SIZE+1];
+    for (i=0;i<128;i++) Pmapping[i]=-1;
+    int tx=0;
+    while (k<strlen(text)){
+	for (i=0;i<MAX_LINE_SIZE;i++){
+	    lin[i]=text[k++];
+	    if (lin[i]<0x20) break;
+	};
+	lin[i]='\0';
+	if (strlen(lin)==0) continue;
+
+	int tmp=0;
+	if (sscanf(lin,"%d",&tmp)==0) tmp=-1;
+	if (tmp<-1) tmp=-1;
+	Pmapping[tx]=tmp;
+	
+	if ((tx++)>127) break;
+    };
+    delete [] lin;
+    
+    if (tx==0) tx=1;
+    Pmapsize=tx;
+};
+
+/*
+ * Convert tunning to text line
+ */
+void Microtonal::tuningtoline(int n,char *line,int maxn){
+    if ((n>octavesize) || (n>MAX_OCTAVE_SIZE)) {
+	line[0]='\0';
+	return;
+    };
+    if (octave[n].type==1) snprintf(line,maxn,"%d.%d",octave[n].x1,octave[n].x2);
+    if (octave[n].type==2) snprintf(line,maxn,"%d/%d",octave[n].x1,octave[n].x2);
+};
+
+ 
+int Microtonal::loadline(FILE *file,char *line){
+    do {
+    if (fgets(line,500,file)==0) return(1);
+    } while (line[0]=='!');
+    return(0);
+};
+/*
+ * Loads the tunnings from a scl file
+ */
+int Microtonal::loadscl(const char *filename){
+    FILE *file=fopen(filename, "r");
+    char tmp[500];
+    fseek(file,0,SEEK_SET);
+    //loads the short description
+    if (loadline(file,&tmp[0])!=0) return(2);
+    for (int i=0;i<500;i++) if (tmp[i]<32) tmp[i]=0;
+    snprintf((char *) Pname,MICROTONAL_MAX_NAME_LEN,"%s",tmp);
+    snprintf((char *) Pcomment,MICROTONAL_MAX_NAME_LEN,"%s",tmp);
+    //loads the number of the notes
+    if (loadline(file,&tmp[0])!=0) return(2);
+    int nnotes=MAX_OCTAVE_SIZE;
+    sscanf(&tmp[0],"%d",&nnotes);
+    if (nnotes>MAX_OCTAVE_SIZE) return (2);
+    //load the tunnings
+    for (int nline=0;nline<nnotes;nline++){
+	if (loadline(file,&tmp[0])!=0) return(2);
+	linetotunings(nline,&tmp[0]);
+    };
+    fclose(file);
+
+    octavesize=nnotes;
+    for (int i=0;i<octavesize;i++){
+	octave[i].tuning=tmpoctave[i].tuning;
+	octave[i].type=tmpoctave[i].type;
+	octave[i].x1=tmpoctave[i].x1;
+	octave[i].x2=tmpoctave[i].x2;
+    };
+
+    return(0);
+};
+
+/*
+ * Loads the mapping from a kbm file
+ */
+int Microtonal::loadkbm(const char *filename){
+    FILE *file=fopen(filename, "r");
+    int x;
+    char tmp[500];
+
+    fseek(file,0,SEEK_SET);
+    //loads the mapsize
+    if (loadline(file,&tmp[0])!=0) return(2);
+    if (sscanf(&tmp[0],"%d",&x)==0) return(2);
+    if (x<1) x=0;if (x>127) x=127;//just in case...
+    Pmapsize=x;
+    //loads first MIDI note to retune
+    if (loadline(file,&tmp[0])!=0) return(2);
+    if (sscanf(&tmp[0],"%d",&x)==0) return(2);
+    if (x<1) x=0;if (x>127) x=127;//just in case...
+    Pfirstkey=x;
+    //loads last MIDI note to retune
+    if (loadline(file,&tmp[0])!=0) return(2);
+    if (sscanf(&tmp[0],"%d",&x)==0) return(2);
+    if (x<1) x=0;if (x>127) x=127;//just in case...
+    Plastkey=x;
+    //loads last the middle note where scale fro scale degree=0
+    if (loadline(file,&tmp[0])!=0) return(2);
+    if (sscanf(&tmp[0],"%d",&x)==0) return(2);
+    if (x<1) x=0;if (x>127) x=127;//just in case...
+    Pmiddlenote=x;
+    //loads the reference note
+    if (loadline(file,&tmp[0])!=0) return(2);
+    if (sscanf(&tmp[0],"%d",&x)==0) return(2);
+    if (x<1) x=0;if (x>127) x=127;//just in case...
+    PAnote=x;
+    //loads the reference freq.
+    if (loadline(file,&tmp[0])!=0) return(2);
+    REALTYPE tmpPAfreq=440.0;
+    if (sscanf(&tmp[0],"%f",&tmpPAfreq)==0) return(2);
+    PAfreq=tmpPAfreq;
+
+    //the scale degree(which is the octave) is not loaded, it is obtained by the tunnings with getoctavesize() method
+    if (loadline(file,&tmp[0])!=0) return(2);
+
+    //load the mappings
+    if (Pmapsize!=0){
+	for (int nline=0;nline<Pmapsize;nline++){
+	    if (loadline(file,&tmp[0])!=0) return(2);
+	    if (sscanf(&tmp[0],"%d",&x)==0) x=-1;
+	    Pmapping[nline]=x;
+	};
+	Pmappingenabled=1;
+    } else {
+	Pmappingenabled=0;
+	Pmapping[0]=0;
+	Pmapsize=1;
+    };
+    fclose(file);
+
+    return(0);
+};
+
+
+
+void Microtonal::add2XML(XMLwrapper *xml){
+    xml->addparstr("name",(char *) Pname);
+    xml->addparstr("comment",(char *) Pcomment);
+
+    xml->addparbool("invert_up_down",Pinvertupdown);
+    xml->addparbool("invert_up_down_center",Pinvertupdowncenter);
+
+    xml->addparbool("enabled",Penabled);
+    xml->addpar("global_fine_detune",Pglobalfinedetune);
+
+    xml->addpar("a_note",PAnote);
+    xml->addparreal("a_freq",PAfreq);
+
+    if ((Penabled==0)&&(xml->minimal)) return;
+
+    xml->beginbranch("SCALE");
+        xml->addpar("scale_shift",Pscaleshift);
+	xml->addpar("first_key",Pfirstkey);
+	xml->addpar("last_key",Plastkey);
+	xml->addpar("middle_note",Pmiddlenote);
+
+	xml->beginbranch("OCTAVE");
+	    xml->addpar("octave_size",octavesize);
+	    for (int i=0;i<octavesize;i++){
+		xml->beginbranch("DEGREE",i);
+		    if (octave[i].type==1){			
+			xml->addparreal("cents",octave[i].tuning);
+		    };
+		    if (octave[i].type==2){			
+			xml->addpar("numerator",octave[i].x1);
+			xml->addpar("denominator",octave[i].x2);
+		    };
+		xml->endbranch();
+	    };
+	xml->endbranch();
+
+	xml->beginbranch("KEYBOARD_MAPPING");
+	    xml->addpar("map_size",Pmapsize);
+	    xml->addpar("mapping_enabled",Pmappingenabled);
+		for (int i=0;i<Pmapsize;i++){
+		    xml->beginbranch("KEYMAP",i);
+			xml->addpar("degree",Pmapping[i]);
+		    xml->endbranch();
+		};
+	xml->endbranch();
+    xml->endbranch();
+};
+
+void Microtonal::getfromXML(XMLwrapper *xml){
+    xml->getparstr("name",(char *) Pname,MICROTONAL_MAX_NAME_LEN);
+    xml->getparstr("comment",(char *) Pcomment,MICROTONAL_MAX_NAME_LEN);
+
+    Pinvertupdown=xml->getparbool("invert_up_down",Pinvertupdown);
+    Pinvertupdowncenter=xml->getparbool("invert_up_down_center",Pinvertupdowncenter);
+
+    Penabled=xml->getparbool("enabled",Penabled);
+    Pglobalfinedetune=xml->getpar127("global_fine_detune",Pglobalfinedetune);
+
+    PAnote=xml->getpar127("a_note",PAnote);
+    PAfreq=xml->getparreal("a_freq",PAfreq,1.0,10000.0);
+
+    if (xml->enterbranch("SCALE")){
+	Pscaleshift=xml->getpar127("scale_shift",Pscaleshift);
+	Pfirstkey=xml->getpar127("first_key",Pfirstkey);
+	Plastkey=xml->getpar127("last_key",Plastkey);
+	Pmiddlenote=xml->getpar127("middle_note",Pmiddlenote);
+
+	if (xml->enterbranch("OCTAVE")){
+	    octavesize=xml->getpar127("octave_size",octavesize);
+	    for (int i=0;i<octavesize;i++){
+		if (xml->enterbranch("DEGREE",i)==0) continue;
+		    octave[i].x2=0;
+		    octave[i].tuning=xml->getparreal("cents",octave[i].tuning);
+		    octave[i].x1=xml->getpar127("numerator",octave[i].x1);
+		    octave[i].x2=xml->getpar127("denominator",octave[i].x2);
+		    
+		    if (octave[i].x2!=0) octave[i].type=2; 
+			else octave[i].type=1;
+		    
+		xml->exitbranch();
+	    };
+	    xml->exitbranch();
+	};
+
+	if (xml->enterbranch("KEYBOARD_MAPPING")){
+	    Pmapsize=xml->getpar127("map_size",Pmapsize);
+	    Pmappingenabled=xml->getpar127("mapping_enabled",Pmappingenabled);
+		for (int i=0;i<Pmapsize;i++){
+		    if (xml->enterbranch("KEYMAP",i)==0) continue;
+			Pmapping[i]=xml->getpar127("degree",Pmapping[i]);
+		    xml->exitbranch();
+		};
+	    xml->exitbranch();
+	};
+	xml->exitbranch();
+    };
+};
+
+
+int Microtonal::saveXML(char *filename){
+    XMLwrapper *xml=new XMLwrapper();
+
+    xml->beginbranch("MICROTONAL");
+    add2XML(xml);
+    xml->endbranch();
+
+    int result=xml->saveXMLfile(filename);
+    delete (xml);
+    return(result);
+};
+
+int Microtonal::loadXML(char *filename){
+    XMLwrapper *xml=new XMLwrapper();
+    if (xml->loadXMLfile(filename)<0) {
+	delete(xml);
+	return(-1);
+    };
+    
+    if (xml->enterbranch("MICROTONAL")==0) return(-10);
+	getfromXML(xml);
+    xml->exitbranch();
+    
+    delete(xml);
+    return(0);
+};
+
+
-- 
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