/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.

iemlib2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2003 */

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

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

/* ------------------------ bpe ---------------------------- */
static t_class *bpe_class;

typedef struct _bpe
{
    t_object x_obj;
    t_clock  *x_clock;
    int      x_maxnum;
    int      x_curnum;
    int      x_curindex;
    t_atom   *x_beg;
    void     *x_out_val;
    void     *x_out_time;
    void     *x_out_finished;
} t_bpe;

static void bpe_stop(t_bpe *x)
{
    clock_unset(x->x_clock);
}

static void bpe_tick(t_bpe *x)
{
    t_atom *vec = x->x_beg;
    float val, time;

    if(x->x_curindex >= x->x_curnum)
    {
	bpe_stop(x);
        outlet_bang(x->x_out_finished);
    }
    else
    {
	vec += x->x_curindex;
        val = atom_getfloat(vec++);
        time = atom_getfloat(vec);
        outlet_float(x->x_out_time, time);
        outlet_float(x->x_out_val, val);
	x->x_curindex += 2;
	clock_delay(x->x_clock, time);
    }
}

static void bpe_bang(t_bpe *x)
{
    t_atom *vec = x->x_beg;
    float val, time;

    if(x->x_curnum)
    {
	x->x_curindex = 2;
	val = atom_getfloat(vec++);
	time = atom_getfloat(vec);
	outlet_float(x->x_out_time, time);
	outlet_float(x->x_out_val, val);
	clock_delay(x->x_clock, time);
    }
}

static void bpe_list(t_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 bpe_free(t_bpe *x)
{
    freebytes(x->x_beg, x->x_maxnum*sizeof(t_atom));
    clock_free(x->x_clock);
}

static void *bpe_new(void)
{
    t_bpe *x = (t_bpe *)pd_new(bpe_class);

    x->x_curindex = 0;
    x->x_maxnum = 20;
    x->x_curnum = 0;
    x->x_beg = (t_atom *)getbytes(x->x_maxnum*sizeof(t_atom));
    x->x_clock = clock_new(x, (t_method)bpe_tick);
    x->x_out_val = outlet_new(&x->x_obj, &s_float);
    x->x_out_time = outlet_new(&x->x_obj, &s_float);
    x->x_out_finished = outlet_new(&x->x_obj, &s_bang);
    return (x);
}

void bpe_setup(void)
{
    bpe_class = class_new(gensym("bpe"), (t_newmethod)bpe_new,
    	(t_method)bpe_free, sizeof(t_bpe), 0, 0);
    class_addmethod(bpe_class, (t_method)bpe_stop, gensym("stop"), 0);
    class_addbang(bpe_class, bpe_bang);
    class_addlist(bpe_class, (t_method)bpe_list);
    class_sethelpsymbol(bpe_class, gensym("iemhelp/help-bpe"));
}