Learn how easy it is to sync an existing GitHub or Google Code repo to a SourceForge project! See Demo

Close

[36bbda]: src / d_ctl.c Maximize Restore History

Download this file

d_ctl.c    848 lines (770 with data), 24.5 kB

  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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
/* Copyright (c) 1997-1999 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* sig~ and line~ control-to-signal converters;
snapshot~ signal-to-control converter.
*/
#include "m_pd.h"
#include "math.h"
/* -------------------------- sig~ ------------------------------ */
static t_class *sig_tilde_class;
typedef struct _sig
{
t_object x_obj;
t_float x_f;
} t_sig;
static t_int *sig_tilde_perform(t_int *w)
{
t_float f = *(t_float *)(w[1]);
t_sample *out = (t_sample *)(w[2]);
int n = (int)(w[3]);
while (n--)
*out++ = f;
return (w+4);
}
static t_int *sig_tilde_perf8(t_int *w)
{
t_float f = *(t_float *)(w[1]);
t_sample *out = (t_sample *)(w[2]);
int n = (int)(w[3]);
for (; n; n -= 8, out += 8)
{
out[0] = f;
out[1] = f;
out[2] = f;
out[3] = f;
out[4] = f;
out[5] = f;
out[6] = f;
out[7] = f;
}
return (w+4);
}
void dsp_add_scalarcopy(t_float *in, t_sample *out, int n)
{
if (n&7)
dsp_add(sig_tilde_perform, 3, in, out, n);
else
dsp_add(sig_tilde_perf8, 3, in, out, n);
}
static void sig_tilde_float(t_sig *x, t_float f)
{
x->x_f = f;
}
static void sig_tilde_dsp(t_sig *x, t_signal **sp)
{
dsp_add(sig_tilde_perform, 3, &x->x_f, sp[0]->s_vec, sp[0]->s_n);
}
static void *sig_tilde_new(t_floatarg f)
{
t_sig *x = (t_sig *)pd_new(sig_tilde_class);
x->x_f = f;
outlet_new(&x->x_obj, gensym("signal"));
return (x);
}
static void sig_tilde_setup(void)
{
sig_tilde_class = class_new(gensym("sig~"), (t_newmethod)sig_tilde_new, 0,
sizeof(t_sig), 0, A_DEFFLOAT, 0);
class_addfloat(sig_tilde_class, (t_method)sig_tilde_float);
class_addmethod(sig_tilde_class, (t_method)sig_tilde_dsp, gensym("dsp"), 0);
}
/* -------------------------- line~ ------------------------------ */
static t_class *line_tilde_class;
typedef struct _line
{
t_object x_obj;
t_sample x_target; /* target value of ramp */
t_sample x_value; /* current value of ramp at block-borders */
t_sample x_biginc;
t_sample x_inc;
t_float x_1overn;
t_float x_dspticktomsec;
t_float x_inletvalue;
t_float x_inletwas;
int x_ticksleft;
int x_retarget;
} t_line;
static t_int *line_tilde_perform(t_int *w)
{
t_line *x = (t_line *)(w[1]);
t_sample *out = (t_sample *)(w[2]);
int n = (int)(w[3]);
t_sample f = x->x_value;
if (PD_BIGORSMALL(f))
x->x_value = f = 0;
if (x->x_retarget)
{
int nticks = x->x_inletwas * x->x_dspticktomsec;
if (!nticks) nticks = 1;
x->x_ticksleft = nticks;
x->x_biginc = (x->x_target - x->x_value)/(t_float)nticks;
x->x_inc = x->x_1overn * x->x_biginc;
x->x_retarget = 0;
}
if (x->x_ticksleft)
{
t_sample f = x->x_value;
while (n--) *out++ = f, f += x->x_inc;
x->x_value += x->x_biginc;
x->x_ticksleft--;
}
else
{
t_sample g = x->x_value = x->x_target;
while (n--)
*out++ = g;
}
return (w+4);
}
/* TB: vectorized version */
static t_int *line_tilde_perf8(t_int *w)
{
t_line *x = (t_line *)(w[1]);
t_sample *out = (t_sample *)(w[2]);
int n = (int)(w[3]);
t_sample f = x->x_value;
if (PD_BIGORSMALL(f))
x->x_value = f = 0;
if (x->x_retarget)
{
int nticks = x->x_inletwas * x->x_dspticktomsec;
if (!nticks) nticks = 1;
x->x_ticksleft = nticks;
x->x_biginc = (x->x_target - x->x_value)/(t_sample)nticks;
x->x_inc = x->x_1overn * x->x_biginc;
x->x_retarget = 0;
}
if (x->x_ticksleft)
{
t_sample f = x->x_value;
while (n--) *out++ = f, f += x->x_inc;
x->x_value += x->x_biginc;
x->x_ticksleft--;
}
else
{
t_sample f = x->x_value = x->x_target;
for (; n; n -= 8, out += 8)
{
out[0] = f; out[1] = f; out[2] = f; out[3] = f;
out[4] = f; out[5] = f; out[6] = f; out[7] = f;
}
}
return (w+4);
}
static void line_tilde_float(t_line *x, t_float f)
{
if (x->x_inletvalue <= 0)
{
x->x_target = x->x_value = f;
x->x_ticksleft = x->x_retarget = 0;
}
else
{
x->x_target = f;
x->x_retarget = 1;
x->x_inletwas = x->x_inletvalue;
x->x_inletvalue = 0;
}
}
static void line_tilde_stop(t_line *x)
{
x->x_target = x->x_value;
x->x_ticksleft = x->x_retarget = 0;
}
static void line_tilde_dsp(t_line *x, t_signal **sp)
{
if(sp[0]->s_n&7)
dsp_add(line_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
else
dsp_add(line_tilde_perf8, 3, x, sp[0]->s_vec, sp[0]->s_n);
x->x_1overn = 1./sp[0]->s_n;
x->x_dspticktomsec = sp[0]->s_sr / (1000 * sp[0]->s_n);
}
static void *line_tilde_new(void)
{
t_line *x = (t_line *)pd_new(line_tilde_class);
outlet_new(&x->x_obj, gensym("signal"));
floatinlet_new(&x->x_obj, &x->x_inletvalue);
x->x_ticksleft = x->x_retarget = 0;
x->x_value = x->x_target = x->x_inletvalue = x->x_inletwas = 0;
return (x);
}
static void line_tilde_setup(void)
{
line_tilde_class = class_new(gensym("line~"), line_tilde_new, 0,
sizeof(t_line), 0, 0);
class_addfloat(line_tilde_class, (t_method)line_tilde_float);
class_addmethod(line_tilde_class, (t_method)line_tilde_dsp,
gensym("dsp"), 0);
class_addmethod(line_tilde_class, (t_method)line_tilde_stop,
gensym("stop"), 0);
}
/* -------------------------- vline~ ------------------------------ */
static t_class *vline_tilde_class;
#include "s_stuff.h" /* for DEFDACBLKSIZE; this should be in m_pd.h */
typedef struct _vseg
{
double s_targettime;
double s_starttime;
t_sample s_target;
struct _vseg *s_next;
} t_vseg;
typedef struct _vline
{
t_object x_obj;
double x_value;
double x_inc;
double x_referencetime;
double x_lastlogicaltime;
double x_nextblocktime;
double x_samppermsec;
double x_msecpersamp;
double x_targettime;
t_sample x_target;
t_float x_inlet1;
t_float x_inlet2;
t_vseg *x_list;
} t_vline;
static t_int *vline_tilde_perform(t_int *w)
{
t_vline *x = (t_vline *)(w[1]);
t_float *out = (t_float *)(w[2]);
int n = (int)(w[3]), i;
double f = x->x_value;
double inc = x->x_inc;
double msecpersamp = x->x_msecpersamp;
double samppermsec = x->x_samppermsec;
double timenow, logicaltimenow = clock_gettimesince(x->x_referencetime);
t_vseg *s = x->x_list;
if (logicaltimenow != x->x_lastlogicaltime)
{
int sampstotime = (n > DEFDACBLKSIZE ? n : DEFDACBLKSIZE);
x->x_lastlogicaltime = logicaltimenow;
x->x_nextblocktime = logicaltimenow - sampstotime * msecpersamp;
}
timenow = x->x_nextblocktime;
x->x_nextblocktime = timenow + n * msecpersamp;
for (i = 0; i < n; i++)
{
double timenext = timenow + msecpersamp;
checknext:
if (s)
{
/* has starttime elapsed? If so update value and increment */
if (s->s_starttime < timenext)
{
if (x->x_targettime <= timenext)
f = x->x_target, inc = 0;
/* if zero-length segment bash output value */
if (s->s_targettime <= s->s_starttime)
{
f = s->s_target;
inc = 0;
}
else
{
double incpermsec = (s->s_target - f)/
(s->s_targettime - s->s_starttime);
f = f + incpermsec * (timenext - s->s_starttime);
inc = incpermsec * msecpersamp;
}
x->x_inc = inc;
x->x_target = s->s_target;
x->x_targettime = s->s_targettime;
x->x_list = s->s_next;
t_freebytes(s, sizeof(*s));
s = x->x_list;
goto checknext;
}
}
if (x->x_targettime <= timenext)
f = x->x_target, inc = x->x_inc = 0, x->x_targettime = 1e20;
*out++ = f;
f = f + inc;
timenow = timenext;
}
x->x_value = f;
return (w+4);
}
static void vline_tilde_stop(t_vline *x)
{
t_vseg *s1, *s2;
for (s1 = x->x_list; s1; s1 = s2)
s2 = s1->s_next, t_freebytes(s1, sizeof(*s1));
x->x_list = 0;
x->x_inc = 0;
x->x_inlet1 = x->x_inlet2 = 0;
x->x_target = x->x_value;
x->x_targettime = 1e20;
}
static void vline_tilde_float(t_vline *x, t_float f)
{
double timenow = clock_gettimesince(x->x_referencetime);
t_float inlet1 = (x->x_inlet1 < 0 ? 0 : x->x_inlet1);
t_float inlet2 = x->x_inlet2;
double starttime = timenow + inlet2;
t_vseg *s1, *s2, *deletefrom = 0, *snew;
if (PD_BIGORSMALL(f))
f = 0;
/* negative delay input means stop and jump immediately to new value */
if (inlet2 < 0)
{
x->x_value = f;
vline_tilde_stop(x);
return;
}
snew = (t_vseg *)t_getbytes(sizeof(*snew));
/* check if we supplant the first item in the list. We supplant
an item by having an earlier starttime, or an equal starttime unless
the equal one was instantaneous and the new one isn't (in which case
we'll do a jump-and-slide starting at that time.) */
if (!x->x_list || x->x_list->s_starttime > starttime ||
(x->x_list->s_starttime == starttime &&
(x->x_list->s_targettime > x->x_list->s_starttime || inlet1 <= 0)))
{
deletefrom = x->x_list;
x->x_list = snew;
}
else
{
for (s1 = x->x_list; s2 = s1->s_next; s1 = s2)
{
if (s2->s_starttime > starttime ||
(s2->s_starttime == starttime &&
(s2->s_targettime > s2->s_starttime || inlet1 <= 0)))
{
deletefrom = s2;
s1->s_next = snew;
goto didit;
}
}
s1->s_next = snew;
deletefrom = 0;
didit: ;
}
while (deletefrom)
{
s1 = deletefrom->s_next;
t_freebytes(deletefrom, sizeof(*deletefrom));
deletefrom = s1;
}
snew->s_next = 0;
snew->s_target = f;
snew->s_starttime = starttime;
snew->s_targettime = starttime + inlet1;
x->x_inlet1 = x->x_inlet2 = 0;
}
static void vline_tilde_dsp(t_vline *x, t_signal **sp)
{
dsp_add(vline_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
x->x_samppermsec = ((double)(sp[0]->s_sr)) / 1000;
x->x_msecpersamp = ((double)1000) / sp[0]->s_sr;
}
static void *vline_tilde_new(void)
{
t_vline *x = (t_vline *)pd_new(vline_tilde_class);
outlet_new(&x->x_obj, gensym("signal"));
floatinlet_new(&x->x_obj, &x->x_inlet1);
floatinlet_new(&x->x_obj, &x->x_inlet2);
x->x_inlet1 = x->x_inlet2 = 0;
x->x_value = x->x_inc = 0;
x->x_referencetime = x->x_lastlogicaltime = x->x_nextblocktime =
clock_getlogicaltime();
x->x_list = 0;
x->x_samppermsec = 0;
x->x_targettime = 1e20;
return (x);
}
static void vline_tilde_setup(void)
{
vline_tilde_class = class_new(gensym("vline~"), vline_tilde_new,
(t_method)vline_tilde_stop, sizeof(t_vline), 0, 0);
class_addfloat(vline_tilde_class, (t_method)vline_tilde_float);
class_addmethod(vline_tilde_class, (t_method)vline_tilde_dsp,
gensym("dsp"), 0);
class_addmethod(vline_tilde_class, (t_method)vline_tilde_stop,
gensym("stop"), 0);
}
/* -------------------------- snapshot~ ------------------------------ */
static t_class *snapshot_tilde_class;
typedef struct _snapshot
{
t_object x_obj;
t_sample x_value;
t_float x_f;
} t_snapshot;
static void *snapshot_tilde_new(void)
{
t_snapshot *x = (t_snapshot *)pd_new(snapshot_tilde_class);
x->x_value = 0;
outlet_new(&x->x_obj, &s_float);
x->x_f = 0;
return (x);
}
static t_int *snapshot_tilde_perform(t_int *w)
{
t_sample *in = (t_sample *)(w[1]);
t_sample *out = (t_sample *)(w[2]);
*out = *in;
return (w+3);
}
static void snapshot_tilde_dsp(t_snapshot *x, t_signal **sp)
{
dsp_add(snapshot_tilde_perform, 2, sp[0]->s_vec + (sp[0]->s_n-1),
&x->x_value);
}
static void snapshot_tilde_bang(t_snapshot *x)
{
outlet_float(x->x_obj.ob_outlet, x->x_value);
}
static void snapshot_tilde_set(t_snapshot *x, t_floatarg f)
{
x->x_value = f;
}
static void snapshot_tilde_setup(void)
{
snapshot_tilde_class = class_new(gensym("snapshot~"), snapshot_tilde_new, 0,
sizeof(t_snapshot), 0, 0);
CLASS_MAINSIGNALIN(snapshot_tilde_class, t_snapshot, x_f);
class_addmethod(snapshot_tilde_class, (t_method)snapshot_tilde_dsp,
gensym("dsp"), 0);
class_addmethod(snapshot_tilde_class, (t_method)snapshot_tilde_set,
gensym("set"), A_DEFFLOAT, 0);
class_addbang(snapshot_tilde_class, snapshot_tilde_bang);
}
/* -------------------------- vsnapshot~ ------------------------------ */
static t_class *vsnapshot_tilde_class;
typedef struct _vsnapshot
{
t_object x_obj;
int x_n;
int x_gotone;
t_sample *x_vec;
t_float x_f;
t_float x_sampspermsec;
double x_time;
} t_vsnapshot;
static void *vsnapshot_tilde_new(void)
{
t_vsnapshot *x = (t_vsnapshot *)pd_new(vsnapshot_tilde_class);
outlet_new(&x->x_obj, &s_float);
x->x_f = 0;
x->x_n = 0;
x->x_vec = 0;
x->x_gotone = 0;
return (x);
}
static t_int *vsnapshot_tilde_perform(t_int *w)
{
t_sample *in = (t_sample *)(w[1]);
t_vsnapshot *x = (t_vsnapshot *)(w[2]);
t_sample *out = x->x_vec;
int n = x->x_n, i;
for (i = 0; i < n; i++)
out[i] = in[i];
x->x_time = clock_getlogicaltime();
x->x_gotone = 1;
return (w+3);
}
static void vsnapshot_tilde_dsp(t_vsnapshot *x, t_signal **sp)
{
int n = sp[0]->s_n;
if (n != x->x_n)
{
if (x->x_vec)
t_freebytes(x->x_vec, x->x_n * sizeof(t_sample));
x->x_vec = (t_sample *)getbytes(n * sizeof(t_sample));
x->x_gotone = 0;
x->x_n = n;
}
x->x_sampspermsec = sp[0]->s_sr / 1000;
dsp_add(vsnapshot_tilde_perform, 2, sp[0]->s_vec, x);
}
static void vsnapshot_tilde_bang(t_vsnapshot *x)
{
t_sample val;
if (x->x_gotone)
{
int indx = clock_gettimesince(x->x_time) * x->x_sampspermsec;
if (indx < 0)
indx = 0;
else if (indx >= x->x_n)
indx = x->x_n - 1;
val = x->x_vec[indx];
}
else val = 0;
outlet_float(x->x_obj.ob_outlet, val);
}
static void vsnapshot_tilde_ff(t_vsnapshot *x)
{
if (x->x_vec)
t_freebytes(x->x_vec, x->x_n * sizeof(t_sample));
}
static void vsnapshot_tilde_setup(void)
{
vsnapshot_tilde_class = class_new(gensym("vsnapshot~"),
vsnapshot_tilde_new, (t_method)vsnapshot_tilde_ff,
sizeof(t_vsnapshot), 0, 0);
CLASS_MAINSIGNALIN(vsnapshot_tilde_class, t_vsnapshot, x_f);
class_addmethod(vsnapshot_tilde_class, (t_method)vsnapshot_tilde_dsp, gensym("dsp"), 0);
class_addbang(vsnapshot_tilde_class, vsnapshot_tilde_bang);
}
/* ---------------- env~ - simple envelope follower. ----------------- */
#define MAXOVERLAP 32
#define INITVSTAKEN 64
typedef struct sigenv
{
t_object x_obj; /* header */
void *x_outlet; /* a "float" outlet */
void *x_clock; /* a "clock" object */
t_sample *x_buf; /* a Hanning window */
int x_phase; /* number of points since last output */
int x_period; /* requested period of output */
int x_realperiod; /* period rounded up to vecsize multiple */
int x_npoints; /* analysis window size in samples */
t_float x_result; /* result to output */
t_sample x_sumbuf[MAXOVERLAP]; /* summing buffer */
t_float x_f;
int x_allocforvs; /* extra buffer for DSP vector size */
} t_sigenv;
t_class *env_tilde_class;
static void env_tilde_tick(t_sigenv *x);
static void *env_tilde_new(t_floatarg fnpoints, t_floatarg fperiod)
{
int npoints = fnpoints;
int period = fperiod;
t_sigenv *x;
t_sample *buf;
int i;
if (npoints < 1) npoints = 1024;
if (period < 1) period = npoints/2;
if (period < npoints / MAXOVERLAP + 1)
period = npoints / MAXOVERLAP + 1;
if (!(buf = getbytes(sizeof(t_sample) * (npoints + INITVSTAKEN))))
{
error("env: couldn't allocate buffer");
return (0);
}
x = (t_sigenv *)pd_new(env_tilde_class);
x->x_buf = buf;
x->x_npoints = npoints;
x->x_phase = 0;
x->x_period = period;
for (i = 0; i < MAXOVERLAP; i++) x->x_sumbuf[i] = 0;
for (i = 0; i < npoints; i++)
buf[i] = (1. - cos((2 * 3.14159 * i) / npoints))/npoints;
for (; i < npoints+INITVSTAKEN; i++) buf[i] = 0;
x->x_clock = clock_new(x, (t_method)env_tilde_tick);
x->x_outlet = outlet_new(&x->x_obj, gensym("float"));
x->x_f = 0;
x->x_allocforvs = INITVSTAKEN;
return (x);
}
static t_int *env_tilde_perform(t_int *w)
{
t_sigenv *x = (t_sigenv *)(w[1]);
t_sample *in = (t_sample *)(w[2]);
int n = (int)(w[3]);
int count;
t_sample *sump;
in += n;
for (count = x->x_phase, sump = x->x_sumbuf;
count < x->x_npoints; count += x->x_realperiod, sump++)
{
t_sample *hp = x->x_buf + count;
t_sample *fp = in;
t_sample sum = *sump;
int i;
for (i = 0; i < n; i++)
{
fp--;
sum += *hp++ * (*fp * *fp);
}
*sump = sum;
}
sump[0] = 0;
x->x_phase -= n;
if (x->x_phase < 0)
{
x->x_result = x->x_sumbuf[0];
for (count = x->x_realperiod, sump = x->x_sumbuf;
count < x->x_npoints; count += x->x_realperiod, sump++)
sump[0] = sump[1];
sump[0] = 0;
x->x_phase = x->x_realperiod - n;
clock_delay(x->x_clock, 0L);
}
return (w+4);
}
static void env_tilde_dsp(t_sigenv *x, t_signal **sp)
{
if (x->x_period % sp[0]->s_n) x->x_realperiod =
x->x_period + sp[0]->s_n - (x->x_period % sp[0]->s_n);
else x->x_realperiod = x->x_period;
if (sp[0]->s_n > x->x_allocforvs)
{
void *xx = resizebytes(x->x_buf,
(x->x_npoints + x->x_allocforvs) * sizeof(t_sample),
(x->x_npoints + sp[0]->s_n) * sizeof(t_sample));
if (!xx)
{
error("env~: out of memory");
return;
}
x->x_buf = (t_sample *)xx;
x->x_allocforvs = sp[0]->s_n;
}
dsp_add(env_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
}
static void env_tilde_tick(t_sigenv *x) /* callback function for the clock */
{
outlet_float(x->x_outlet, powtodb(x->x_result));
}
static void env_tilde_ff(t_sigenv *x) /* cleanup on free */
{
clock_free(x->x_clock);
freebytes(x->x_buf, (x->x_npoints + x->x_allocforvs) * sizeof(*x->x_buf));
}
void env_tilde_setup(void )
{
env_tilde_class = class_new(gensym("env~"), (t_newmethod)env_tilde_new,
(t_method)env_tilde_ff, sizeof(t_sigenv), 0, A_DEFFLOAT, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(env_tilde_class, t_sigenv, x_f);
class_addmethod(env_tilde_class, (t_method)env_tilde_dsp, gensym("dsp"), 0);
}
/* --------------------- threshold~ ----------------------------- */
static t_class *threshold_tilde_class;
typedef struct _threshold_tilde
{
t_object x_obj;
t_outlet *x_outlet1; /* bang out for high thresh */
t_outlet *x_outlet2; /* bang out for low thresh */
t_clock *x_clock; /* wakeup for message output */
t_float x_f; /* scalar inlet */
int x_state; /* 1 = high, 0 = low */
t_float x_hithresh; /* value of high threshold */
t_float x_lothresh; /* value of low threshold */
t_float x_deadwait; /* msec remaining in dead period */
t_float x_msecpertick; /* msec per DSP tick */
t_float x_hideadtime; /* hi dead time in msec */
t_float x_lodeadtime; /* lo dead time in msec */
} t_threshold_tilde;
static void threshold_tilde_tick(t_threshold_tilde *x);
static void threshold_tilde_set(t_threshold_tilde *x,
t_floatarg hithresh, t_floatarg hideadtime,
t_floatarg lothresh, t_floatarg lodeadtime);
static t_threshold_tilde *threshold_tilde_new(t_floatarg hithresh,
t_floatarg hideadtime, t_floatarg lothresh, t_floatarg lodeadtime)
{
t_threshold_tilde *x = (t_threshold_tilde *)
pd_new(threshold_tilde_class);
x->x_state = 0; /* low state */
x->x_deadwait = 0; /* no dead time */
x->x_clock = clock_new(x, (t_method)threshold_tilde_tick);
x->x_outlet1 = outlet_new(&x->x_obj, &s_bang);
x->x_outlet2 = outlet_new(&x->x_obj, &s_bang);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
x->x_msecpertick = 0.;
x->x_f = 0;
threshold_tilde_set(x, hithresh, hideadtime, lothresh, lodeadtime);
return (x);
}
/* "set" message to specify thresholds and dead times */
static void threshold_tilde_set(t_threshold_tilde *x,
t_floatarg hithresh, t_floatarg hideadtime,
t_floatarg lothresh, t_floatarg lodeadtime)
{
if (lothresh > hithresh)
lothresh = hithresh;
x->x_hithresh = hithresh;
x->x_hideadtime = hideadtime;
x->x_lothresh = lothresh;
x->x_lodeadtime = lodeadtime;
}
/* number in inlet sets state -- note incompatible with JMAX which used
"int" message for this, impossible here because of auto signal conversion */
static void threshold_tilde_ft1(t_threshold_tilde *x, t_floatarg f)
{
x->x_state = (f != 0);
x->x_deadwait = 0;
}
static void threshold_tilde_tick(t_threshold_tilde *x)
{
if (x->x_state)
outlet_bang(x->x_outlet1);
else outlet_bang(x->x_outlet2);
}
static t_int *threshold_tilde_perform(t_int *w)
{
t_sample *in1 = (t_sample *)(w[1]);
t_threshold_tilde *x = (t_threshold_tilde *)(w[2]);
int n = (t_int)(w[3]);
if (x->x_deadwait > 0)
x->x_deadwait -= x->x_msecpertick;
else if (x->x_state)
{
/* we're high; look for low sample */
for (; n--; in1++)
{
if (*in1 < x->x_lothresh)
{
clock_delay(x->x_clock, 0L);
x->x_state = 0;
x->x_deadwait = x->x_lodeadtime;
goto done;
}
}
}
else
{
/* we're low; look for high sample */
for (; n--; in1++)
{
if (*in1 >= x->x_hithresh)
{
clock_delay(x->x_clock, 0L);
x->x_state = 1;
x->x_deadwait = x->x_hideadtime;
goto done;
}
}
}
done:
return (w+4);
}
void threshold_tilde_dsp(t_threshold_tilde *x, t_signal **sp)
{
x->x_msecpertick = 1000. * sp[0]->s_n / sp[0]->s_sr;
dsp_add(threshold_tilde_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
}
static void threshold_tilde_ff(t_threshold_tilde *x)
{
clock_free(x->x_clock);
}
static void threshold_tilde_setup( void)
{
threshold_tilde_class = class_new(gensym("threshold~"),
(t_newmethod)threshold_tilde_new, (t_method)threshold_tilde_ff,
sizeof(t_threshold_tilde), 0,
A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(threshold_tilde_class, t_threshold_tilde, x_f);
class_addmethod(threshold_tilde_class, (t_method)threshold_tilde_set,
gensym("set"), A_FLOAT, A_FLOAT, A_FLOAT, A_FLOAT, 0);
class_addmethod(threshold_tilde_class, (t_method)threshold_tilde_ft1,
gensym("ft1"), A_FLOAT, 0);
class_addmethod(threshold_tilde_class, (t_method)threshold_tilde_dsp,
gensym("dsp"), 0);
}
/* ------------------------ global setup routine ------------------------- */
void d_ctl_setup(void)
{
sig_tilde_setup();
line_tilde_setup();
vline_tilde_setup();
snapshot_tilde_setup();
vsnapshot_tilde_setup();
env_tilde_setup();
threshold_tilde_setup();
}