aboutsummaryrefslogtreecommitdiff
path: root/src/iem_t3_lib/t3_bpe.c
blob: eb72d3c97c162f9137d436a63729bcd4dfeb33af (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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.

iem_t3_lib written by Gerhard Eckel, Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */

#ifdef _MSC_VER
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif

#include "m_pd.h"
#include "iemlib.h"
#include <math.h>
#include <stdio.h>
#include <string.h>

/* ------------------------ t3_bpe ---------------------------- */
static t_class *t3_bpe_class;

typedef struct _t3_bpe
{
  t_object x_obj;
  t_atom   x_at[2];
  t_clock  *x_clock;
  int      x_maxnum;
  int      x_curnum;
  int      x_curindex;
  t_atom   *x_beg;
  double   x_t3_bang;
  double   x_ticks2ms;
  int      x_hit;
  void     *x_out_val;
  void     *x_out_time;
  void     *x_out_finished;
} t_t3_bpe;

static void t3_bpe_stop(t_t3_bpe *x)
{
  clock_unset(x->x_clock);
}

static void t3_bpe_tick(t_t3_bpe *x)
{
  t_atom *vec = x->x_beg;
  float val;
  double dticks, time;
  int iticks;
  
  if(x->x_curindex >= x->x_curnum)
  {
    t3_bpe_stop(x);
    outlet_float(x->x_out_finished, x->x_t3_bang);
  }
  else
  {
    x->x_hit = 0;
    vec += x->x_curindex;
    val = atom_getfloat(vec++);
    time = (double)atom_getfloat(vec);
    outlet_float(x->x_out_time, (float)time);
    x->x_at[1].a_w.w_float = val;
    x->x_at[0].a_w.w_float = x->x_t3_bang;
    outlet_list(x->x_obj.ob_outlet, &s_list, 2, x->x_at);
    dticks = (time + x->x_t3_bang)/x->x_ticks2ms;
    iticks = (int)dticks;
    x->x_t3_bang = (dticks - (double)iticks)*x->x_ticks2ms;
    if(!x->x_hit)
      clock_delay(x->x_clock, (double)iticks*x->x_ticks2ms);
    x->x_curindex += 2;
  }
}

static void t3_bpe_float(t_t3_bpe *x, t_floatarg f)
{
  double dticks;
  int iticks;
  
  if(x->x_curnum)
  {
    x->x_curindex = 0;
    dticks = (double)f/x->x_ticks2ms;
    iticks = (int)dticks;
    x->x_t3_bang = (dticks - (double)iticks)*x->x_ticks2ms;
    clock_delay(x->x_clock, (double)iticks*x->x_ticks2ms);
    x->x_hit = 1;
  }
}

static void t3_bpe_list(t_t3_bpe *x, t_symbol *s, int ac, t_atom *av)
{
  int n = ac & 0xfffffffe, i;
  t_atom *vec = x->x_beg;
  if(n > x->x_maxnum)
  {
    freebytes(x->x_beg, x->x_maxnum*sizeof(t_atom));
    x->x_maxnum = 2 + n;
    x->x_beg = (t_atom *)getbytes(x->x_maxnum*sizeof(t_atom));
    vec = x->x_beg;
  }
  x->x_curnum = n;
  for(i=0; i<n; i++)
  {
    *vec++ = *av++;
  }
}

static void t3_bpe_free(t_t3_bpe *x)
{
  freebytes(x->x_beg, x->x_maxnum*sizeof(t_atom));
  clock_free(x->x_clock);
}

static void *t3_bpe_new(void)
{
  t_t3_bpe *x = (t_t3_bpe *)pd_new(t3_bpe_class);
  
  x->x_t3_bang = 0.0;
  x->x_ticks2ms = 1000.0*(double)sys_getblksize()/(double)sys_getsr();
  x->x_curindex = 0;
  x->x_maxnum = 20;
  x->x_curnum = 0;
  x->x_hit = 0;
  x->x_beg = (t_atom *)getbytes(x->x_maxnum*sizeof(t_atom));
  x->x_clock = clock_new(x, (t_method)t3_bpe_tick);
  outlet_new(&x->x_obj, &s_list);
  x->x_out_time = outlet_new(&x->x_obj, &s_float);
  x->x_out_finished = outlet_new(&x->x_obj, &s_float);
  x->x_at[0].a_type = A_FLOAT;
  x->x_at[1].a_type = A_FLOAT;
  return (x);
}

void t3_bpe_setup(void)
{
  t3_bpe_class = class_new(gensym("t3_bpe"), (t_newmethod)t3_bpe_new,
    (t_method)t3_bpe_free, sizeof(t_t3_bpe), 0, 0);
  class_addmethod(t3_bpe_class, (t_method)t3_bpe_stop, gensym("stop"), 0);
  class_addfloat(t3_bpe_class, (t_method)t3_bpe_float);
  class_addlist(t3_bpe_class, (t_method)t3_bpe_list);
  class_sethelpsymbol(t3_bpe_class, gensym("iemhelp/help-t3_bpe"));
}