aboutsummaryrefslogtreecommitdiff
path: root/src/mtx_rmstodb.c
blob: f5f6a6506222504139ac7a3e03065f06592d4078 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
/*
 *  iemmatrix
 *
 *  objects for manipulating simple matrices
 *  mostly refering to matlab/octave matrix functions
 *
 * Copyright (c) IOhannes m zmölnig, forum::für::umläute
 * IEM, Graz, Austria
 *
 * For information on usage and redistribution, and for a DISCLAIMER OF ALL
 * WARRANTIES, see the file, "LICENSE.txt," in this distribution.
 *
 */
#include "iemmatrix.h"

#define LOGTEN 2.302585092994

/* mtx_rmstodb: B=log(A); B[n,m]=e^A[n,m]  */

static t_class *mtx_rmstodb_class;

static void mtx_rmstodb_matrix(t_mtx_binmtx *x, t_symbol *s, int argc, t_atom *argv)
{
  int row=atom_getfloat(argv++);
  int col=atom_getfloat(argv++);
  t_atom *m;
  int n = argc-2;

  if (argc<2){    post("mtx_rmstodb: crippled matrix");    return;  }
  if ((col<1)||(row<1)) {    post("mtx_rmstodb: invalid dimensions");    return;  }
  if (col*row>argc-2){    post("sparse matrix not yet supported : use \"mtx_check\"");    return;  }

  adjustsize(&x->m, row, col);
  m =  x->m.atombuffer+2;

  while(n--){
    t_float f=atom_getfloat(argv++);
    t_float v=(f<0)?0.:(100+20./LOGTEN * log(f));
    SETFLOAT(m, (v<0)?0:v);
    m++;
  }

  outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, x->m.atombuffer);
}

static void mtx_rmstodb_list(t_mtx_binscalar *x, t_symbol *s, int argc, t_atom *argv)
{
  int n=argc;
  t_atom *m;
  t_float factor = x->f;

  adjustsize(&x->m, 1, argc);
  m = x->m.atombuffer;

  while(n--){
    t_float f=atom_getfloat(argv++);
    t_float v=(f<0)?0.:(100+20./LOGTEN * log(f));
    SETFLOAT(m, (v<0)?0:v);
    m++;
  }

  outlet_list(x->x_obj.ob_outlet, gensym("list"), argc, x->m.atombuffer);
}

static void *mtx_rmstodb_new(t_symbol *s)
{
  /* element log */
  t_matrix *x = (t_matrix *)pd_new(mtx_rmstodb_class);
  outlet_new(&x->x_obj, 0);
  x->col = x->row = 0;
  x->atombuffer = 0;
  return(x);
}

void mtx_rmstodb_setup(void)
{
  mtx_rmstodb_class = class_new(gensym("mtx_rmstodb"), (t_newmethod)mtx_rmstodb_new, (t_method)mtx_binmtx_free,
				   sizeof(t_mtx_binmtx), 0, A_GIMME, 0);
  class_addmethod(mtx_rmstodb_class, (t_method)mtx_rmstodb_matrix, gensym("matrix"), A_GIMME, 0);
  class_addlist  (mtx_rmstodb_class, mtx_rmstodb_list);
  class_addbang  (mtx_rmstodb_class, mtx_binmtx_bang);

  class_sethelpsymbol(mtx_rmstodb_class, gensym("iemmatrix/mtx_rmstodb"));
}

void iemtx_rmstodb_setup(void)
{
  mtx_rmstodb_setup();
}