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#ifdef _WIN32
#include "stdafx.h"
#include <io.h>
#endif
#include "m_pd.h"
#include <stdlib.h>
#include<time.h>
#include <string.h>
#include <stdio.h>
#include "n2m.h"
char* notes_up[12] = {"C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"};
int octaveoffset[11] = { 0 , 12, 24 ,36, 48, 60, 72, 84, 96, 108 ,120 };
/**
* The n2m object is designed to output a midi note number
* in response to a note name of the form <note name><octave>
* for example C5 or D#3.
*/
static t_class *n2m_class;
/*
* make a new n2m it takes one parameter - the percentage error
*/
static void *n2m_new( t_float f )
{
t_n2m *x = (t_n2m *)pd_new(n2m_class);
// make us an output for the note number
outlet_new(&x->x_obj, gensym("float"));
return (x);
}
static void n2m_free(t_n2m *x)
{
// nothing doing here for now
}
/**
* set the error factor
*/
static void n2m_notename( t_n2m *x, t_symbol *s, int ac, t_atom *av )
{
char buf[255];
char note[255];
int octave;
int i;
for( i = 0 ; i < ac ; i++ )
{
atom_string( &av[i] , buf, 255 );
//post("Symbol [%s]", buf );
splitsym( buf , note , &octave );
//post( "Which is %s note and %u octave and midi value %d" , note , octave , midilookup( note , octave ) );
outlet_float( x->x_obj.ob_outlet , midilookup( note , octave ) );
}
}
/**
* make a new one and setup all of our messages
*/
void n2m_setup(void)
{
n2m_class = class_new(gensym("n2m"), (t_newmethod)n2m_new,
(t_method)n2m_free, sizeof(t_n2m), 0, 0);
class_addmethod(n2m_class, (t_method)n2m_notename, gensym("note" ), A_GIMME, 0);
}
/**
* splitsym takes a note symbol and splits it into note and octave
* if note not specified it defaults to C and if octave not specified
* it defaults to 4
*/
static void splitsym( char* buf , char* note, int* octave )
{
int i,j;
int split = -1;
for( i = 0 ; buf[i] != 0 ; i++ )
{
if ( ( buf[i] >= '0' ) && ( buf[i] <= '9'))
{
split = i;
if ( i > 0 )
{
for( j=0; j < i;j++) { note[j] = buf[j]; }
note[i] = 0;
}
else
{
note[0] = 'C';
note[1] = 0;
}
sscanf( buf + i , "%u" , octave );
break;
}
}
if ( split == -1 )
{
i = 0;
while( buf[i] != 0 )
{
note[i] = buf[i];
i++;
}
note[i] = 0;
*octave = 4;
}
}
/**
* return a midi note value for a given note name and octave
*/
static int midilookup( char* note , int octave )
{
int i,j;
int nnum = 4;
for( i = 0 ; i < 12 ; i++ )
{
#ifdef NT
/* stricmp() is not an ANSI or ISO standard C function */
if ( stricmp( note , notes_up[i]) == 0)
{
nnum = i;
break;
}
#else
/* replacing with a ANSI function, but it'll now be case sensitive */
if ( strcmp( note , notes_up[i]) == 0)
{
nnum = i;
break;
}
#endif
}
return octaveoffset[octave + 1 ] + nnum;
}
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