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-rw-r--r--iem_t3_lib/src/t3_sig~.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/iem_t3_lib/src/t3_sig~.c b/iem_t3_lib/src/t3_sig~.c
new file mode 100644
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+++ b/iem_t3_lib/src/t3_sig~.c
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+/* 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 - 2006 */
+
+#include "m_pd.h"
+#include "iemlib.h"
+
+/* -------------------------- t3_sig_tilde~ ------------------------------ */
+static t_class *t3_sig_tilde_class;
+
+typedef struct _t3_sig_tilde
+{
+ t_object x_obj;
+ t_clock *x_clock;
+ t_float x_old_val;
+ t_float x_new_val;
+ t_float *x_beg;
+ int x_n;
+ int x_t3_bang_samps;
+ int x_transient;
+ t_float x_ms2samps;
+ t_float x_ticks2ms;
+} t_t3_sig_tilde;
+
+static void t3_sig_tilde_tick(t_t3_sig_tilde *x)
+{
+ t_float *trans = x->x_beg, val;
+ int n = x->x_n, t3_bang_samps, i;
+
+ t3_bang_samps = x->x_t3_bang_samps;
+ if(!x->x_transient)
+ {
+ val = x->x_old_val;
+ for(i=0; i<t3_bang_samps; i++)
+ trans[i] = val;
+ x->x_transient = 1;
+ }
+ val = x->x_old_val = x->x_new_val;
+ for(i=t3_bang_samps; i<n; i++)
+ trans[i] = val;
+}
+
+static void t3_sig_tilde_stop(t_t3_sig_tilde *x)
+{
+ clock_unset(x->x_clock);
+ x->x_new_val = x->x_old_val;
+}
+
+static void t3_sig_tilde_list(t_t3_sig_tilde *x, t_symbol *s, int ac, t_atom *av)
+{
+ if((ac == 2)&&IS_A_FLOAT(av,0)&&IS_A_FLOAT(av,1))
+ {
+ int n = x->x_n, t3_bang_samps, ticks;
+
+ t3_bang_samps = (int)((t_float)atom_getfloatarg(0, ac, av)*x->x_ms2samps);
+ x->x_new_val = (t_float)atom_getfloatarg(1, ac, av);
+ if(t3_bang_samps < 0)
+ t3_bang_samps = 0;
+ ticks = t3_bang_samps / n;
+ x->x_t3_bang_samps = t3_bang_samps - n*ticks;
+ if(ticks < 1)
+ t3_sig_tilde_tick(x);
+ else
+ clock_delay(x->x_clock, (double)ticks * (double)x->x_ticks2ms);
+ }
+}
+
+static t_int *t3_sig_tilde_perform(t_int *w)
+{
+ t_float *out = (t_float *)(w[1]);
+ t_t3_sig_tilde *x = (t_t3_sig_tilde *)(w[2]);
+ int n = (int)(w[3]);
+
+ if(x->x_transient)
+ {
+ t_float *trans = x->x_beg;
+
+ while(n--)
+ *out++ = *trans++;
+ x->x_transient = 0;
+ }
+ else
+ {
+ t_float val = x->x_new_val;
+
+ while(n--)
+ *out++ = val;
+ }
+ return (w+4);
+}
+
+static t_int *t3_sig_tilde_perf8(t_int *w)
+{
+ t_float *out = (t_float *)(w[1]);
+ t_t3_sig_tilde *x = (t_t3_sig_tilde *)(w[2]);
+ int n = (int)(w[3]), i;
+
+ if(x->x_transient)
+ {
+ t_float *trans = x->x_beg;
+
+ for(i=0; i<n; i+=8, out+=8, trans+=8)
+ {
+ out[0] = trans[0];
+ out[1] = trans[1];
+ out[2] = trans[2];
+ out[3] = trans[3];
+ out[4] = trans[4];
+ out[5] = trans[5];
+ out[6] = trans[6];
+ out[7] = trans[7];
+ }
+ x->x_transient = 0;
+ }
+ else
+ {
+ t_float val = x->x_new_val;
+
+ for(i=0; i<n; i+=8, out+=8)
+ {
+ out[0] = val;
+ out[1] = val;
+ out[2] = val;
+ out[3] = val;
+ out[4] = val;
+ out[5] = val;
+ out[6] = val;
+ out[7] = val;
+ }
+ }
+ return (w+4);
+}
+
+static void t3_sig_tilde_dsp(t_t3_sig_tilde *x, t_signal **sp)
+{
+ int i;
+ t_float *trans, val;
+
+ if(sp[0]->s_n > x->x_n)
+ {
+ freebytes(x->x_beg, x->x_n*sizeof(t_float));
+ x->x_n = sp[0]->s_n;
+ x->x_beg = (t_float *)getbytes(x->x_n*sizeof(t_float));
+ }
+ else
+ x->x_n = sp[0]->s_n;
+ x->x_ms2samps = 0.001*(t_float)sp[0]->s_sr;
+ x->x_ticks2ms = (t_float)x->x_n / x->x_ms2samps;
+ i = x->x_n;
+ val = x->x_new_val;
+ trans = x->x_beg;
+ while(i--)
+ *trans++ = val;
+
+ if((sp[0]->s_n)&7)
+ dsp_add(t3_sig_tilde_perform, 3, sp[0]->s_vec, x, sp[0]->s_n);
+ else
+ dsp_add(t3_sig_tilde_perf8, 3, sp[0]->s_vec, x, sp[0]->s_n);
+}
+
+static void t3_sig_tilde_free(t_t3_sig_tilde *x)
+{
+ if(x->x_beg)
+ freebytes(x->x_beg, x->x_n*sizeof(t_float));
+ clock_free(x->x_clock);
+}
+
+static void *t3_sig_tilde_new(t_floatarg init_val)
+{
+ t_t3_sig_tilde *x = (t_t3_sig_tilde *)pd_new(t3_sig_tilde_class);
+
+ x->x_new_val = x->x_old_val = init_val;
+ x->x_n = (int)sys_getblksize();
+ x->x_beg = (t_float *)getbytes(x->x_n*sizeof(t_float));
+ x->x_t3_bang_samps = x->x_transient = 0;
+ x->x_ms2samps = 0.001 * (t_float)sys_getsr();
+ x->x_ticks2ms = (t_float)x->x_n / x->x_ms2samps;
+ x->x_clock = clock_new(x, (t_method)t3_sig_tilde_tick);
+ outlet_new(&x->x_obj, &s_signal);
+ return (x);
+}
+
+void t3_sig_tilde_setup(void)
+{
+ t3_sig_tilde_class = class_new(gensym("t3_sig~"), (t_newmethod)t3_sig_tilde_new,
+ (t_method)t3_sig_tilde_free, sizeof(t_t3_sig_tilde), 0, A_DEFFLOAT, 0);
+ class_addmethod(t3_sig_tilde_class, (t_method)t3_sig_tilde_dsp, gensym("dsp"), 0);
+ class_addmethod(t3_sig_tilde_class, (t_method)t3_sig_tilde_stop, gensym("stop"), 0);
+ class_addlist(t3_sig_tilde_class, (t_method)t3_sig_tilde_list);
+// class_sethelpsymbol(t3_sig_tilde_class, gensym("iemhelp/help-t3_sig~"));
+}