/* 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 - 2009 */

#include "m_pd.h"
#include "iemlib.h"
#include "iem_tab.h"

/* -------------------------- tab_sum ------------------------------ */
/*   sum = 0.0f;                    */
/*   for(i=0; i<x_size_src1; i++)   */
/*     sum += x_beg_mem_src1[i];    */

typedef struct _tab_sum
{
  t_object  x_obj;
  int       x_size_src1;
  int       x_offset_src1;
  iemarray_t   *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;
  iemarray_t *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 += iemarray_getfloat(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;
  iemarray_t *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 += iemarray_getfloat(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"));
}