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-rw-r--r--src/tab_sum.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/src/tab_sum.c b/src/tab_sum.c
new file mode 100644
index 0000000..e27e17a
--- /dev/null
+++ b/src/tab_sum.c
@@ -0,0 +1,143 @@
+/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+
+iem_tab written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */
+
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+
+
+#include "m_pd.h"
+#include "iemlib.h"
+#include "iem_tab.h"
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* -------------------------- tab_sum ------------------------------ */
+
+typedef struct _tab_sum
+{
+ t_object x_obj;
+ int x_size_src1;
+ int x_offset_src1;
+ float *x_beg_mem_src1;
+ t_symbol *x_sym_scr1;
+ void *x_bang_out;
+ void *x_sum_out;
+} t_tab_sum;
+
+static t_class *tab_sum_class;
+
+static void tab_sum_src(t_tab_sum *x, t_symbol *s)
+{
+ x->x_sym_scr1 = s;
+}
+
+static void tab_sum_bang(t_tab_sum *x)
+{
+ int i, n;
+ int ok_src;
+ t_float *vec_src;
+ t_float sum=0.0f;
+
+ ok_src = iem_tab_check_arrays(gensym("tab_sum"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, 0);
+
+ if(ok_src)
+ {
+ n = x->x_size_src1;
+ vec_src = x->x_beg_mem_src1;
+ if(n)
+ {
+ for(i=0; i<n; i++)
+ {
+ sum += vec_src[i];
+ }
+ outlet_float(x->x_sum_out, sum);
+ outlet_bang(x->x_bang_out);
+ }
+ }
+}
+
+static void tab_sum_list(t_tab_sum *x, t_symbol *s, int argc, t_atom *argv)
+{
+ int beg_src;
+ int i, n;
+ int ok_src;
+ t_float *vec_src;
+ t_float sum=0.0f;
+
+ if((argc >= 2) &&
+ IS_A_FLOAT(argv,0) &&
+ IS_A_FLOAT(argv,1))
+ {
+ beg_src = (int)atom_getintarg(0, argc, argv);
+ n = (int)atom_getintarg(1, argc, argv);
+ if(beg_src < 0)
+ beg_src = 0;
+ if(n < 0)
+ n = 0;
+
+ ok_src = iem_tab_check_arrays(gensym("tab_sum"), x->x_sym_scr1, &x->x_beg_mem_src1, &x->x_size_src1, beg_src+n);
+
+ if(ok_src)
+ {
+ vec_src = x->x_beg_mem_src1 + beg_src;
+ if(n)
+ {
+ for(i=0; i<n; i++)
+ {
+ sum += vec_src[i];
+ }
+ outlet_float(x->x_sum_out, sum);
+ outlet_bang(x->x_bang_out);
+ }
+ }
+ }
+ else
+ {
+ post("tab_sum-ERROR: list need 2 float arguments:");
+ post(" source_offset + number_of_samples_to_calc_sum-value");
+ }
+}
+
+static void tab_sum_free(t_tab_sum *x)
+{
+}
+
+static void *tab_sum_new(t_symbol *s, int argc, t_atom *argv)
+{
+ t_tab_sum *x = (t_tab_sum *)pd_new(tab_sum_class);
+ t_symbol *src;
+
+ if((argc >= 1) &&
+ IS_A_SYMBOL(argv,0))
+ {
+ src = (t_symbol *)atom_getsymbolarg(0, argc, argv);
+ }
+ else
+ {
+ post("tab_sum-ERROR: need 1 symbol argument:");
+ post(" source_array_name");
+ return(0);
+ }
+
+ x->x_sym_scr1 = src;
+ x->x_bang_out = outlet_new(&x->x_obj, &s_bang);
+ x->x_sum_out = outlet_new(&x->x_obj, &s_float);
+ return(x);
+}
+
+void tab_sum_setup(void)
+{
+ tab_sum_class = class_new(gensym("tab_sum"), (t_newmethod)tab_sum_new, (t_method)tab_sum_free,
+ sizeof(t_tab_sum), 0, A_GIMME, 0);
+ class_addbang(tab_sum_class, (t_method)tab_sum_bang);
+ class_addlist(tab_sum_class, (t_method)tab_sum_list);
+ class_addmethod(tab_sum_class, (t_method)tab_sum_src, gensym("src"), A_DEFSYMBOL, 0);
+ class_addmethod(tab_sum_class, (t_method)tab_sum_src, gensym("src1"), A_DEFSYMBOL, 0);
+ class_sethelpsymbol(tab_sum_class, gensym("iemhelp2/tab_sum-help"));
+}