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/******************************************************
*
* Adaptive Systems for PD
*
* copyleft (c) Gerda Strobl, Georg Holzmann
* 2005
*
* for complaints, suggestions: grh@mur.at
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
#include "adaptive.h"
#ifdef ADAPTIVE_SINGLE_OBJ
// for single externals disable the adaptive object
#else
// build as library
typedef struct _adaptive
{
t_object x_obj;
} t_adaptive;
t_class *adaptive_class = NULL;
static void adaptive_help(void)
{
post("\n-----------------------------------------------");
post("adaptive systems for PD");
post("copyleft (c) Gerda Strobl, Georg Holzmann, 2005");
post("");
post("for more info look at the help patches!");
post("-----------------------------------------------\n");
}
void *adaptive_new(void)
{
t_adaptive *x = (t_adaptive *)pd_new(adaptive_class);
return (void *)x;
}
//-----------------------------------------------------
// declaration of the setup functions:
void lms_tilde_setup();
void lms2_tilde_setup();
void nlms_tilde_setup();
void nlms2_tilde_setup();
void nlms3_tilde_setup();
//-end-of-declaration----------------------------------
void adaptive_setup(void)
{
//---------------------------------------------------
// call all the setup functions:
lms_tilde_setup();
lms2_tilde_setup();
nlms_tilde_setup();
nlms2_tilde_setup();
nlms3_tilde_setup();
//-end-----------------------------------------------
post("\nadaptive: 2005 by Gerda Strobl and Georg Holzmann");
adaptive_class = class_new(gensym("adaptive"), adaptive_new, 0, sizeof(t_adaptive), 0, 0);
class_addmethod(adaptive_class, (t_method)adaptive_help, gensym("help"), 0);
}
#endif // library
/* ---------------------- helpers ----------------------- */
void adaptation_write(const char *filename, t_int N, t_float mu, t_float *c)
{
FILE *f=0;
int i;
// open file
f = fopen(filename, "w");
if(!f)
{
post("adaptive, save: error open file");
return;
}
// write little header, number of coefficients and mu
fprintf(f, "adaptivePD\n");
fprintf(f, "size: %d\n", N);
fprintf(f, "mu: %.30f\n", mu);
// write coefficients
for(i=0; i<N; i++)
fprintf(f, "%.30f\n", c[i]);
// close file
if (f) fclose(f);
post("adaptive, save: coefficients written to file");
}
void adaptation_read(const char *filename, t_int *N, t_float *mu,
t_float *c, t_float *buf)
{
FILE *f=0;
int i, n=0;
// open file
f = fopen(filename, "r");
if(!f)
{
post("adaptive, open: error open file");
return;
}
// read header and nr of coefficients
if ( fscanf(f,"adaptivePD\n") != 0)
{
post("adaptive, open: error in reading file");
return;
}
if ( fscanf(f,"size: %d\n",&n) != 1)
{
post("adaptive, open: error in reading file");
return;
};
// change size of the filter if needed
if(n != *N)
{
if(c) freebytes(c, sizeof(t_float) * (*N));
if(buf) freebytes(buf, sizeof(t_sample) * (*N-1));
*N = (n<=0) ? 1 : n;
post("WARNING (adaptive): Nr. of coefficients is changed to %d!",*N);
// allocate mem and init coefficients
c = (t_float *)getbytes(sizeof(t_float) * (*N));
// allocate mem for temp buffer
buf = (t_sample *)getbytes(sizeof(t_sample) * (*N-1));
for(i=0; i<(*N-1); i++)
buf[i] = 0;
}
// read mu
if ( fscanf(f,"mu: %f\n",mu) != 1)
{
post("adaptive, open: error in reading file");
return;
};
// get coefficients:
for(i=0; i<(*N); i++)
if( fscanf(f, "%f\n", c+i) != 1)
{
post("adaptive, open: error in reading file");
return;
}
//post("c_inside: %d",c);
post("adaptive, read: coefficients readed from file");
}
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