/* Copyright (c) 1997-2001 Miller Puckette and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */

/* MIDI. */

#include "m_pd.h"

static t_symbol *ctlin_sym;

static t_class *ctlin_class;

typedef struct _ctlin
{
    t_object x_obj;
    t_float x_channel;
    t_float x_ctlno;
    t_outlet *x_outlet1;
    t_outlet *x_outlet2;
    t_outlet *x_outlet3;
} t_ctlin;

static void *ctlin_new(t_symbol *s, int argc, t_atom *argv)
{
    int ctlno, channel;
    t_ctlin *x = (t_ctlin *)pd_new(ctlin_class);
    if (!argc) ctlno = -1;
    else ctlno = atom_getfloatarg(0, argc, argv);
    channel = atom_getfloatarg(1, argc, argv);
    x->x_channel = channel;
    x->x_ctlno = ctlno;
    x->x_outlet1 = outlet_new(&x->x_obj, &s_float);
    if (!channel)
    {
        if (x->x_ctlno < 0) x->x_outlet2 = outlet_new(&x->x_obj, &s_float);
        x->x_outlet3 = outlet_new(&x->x_obj, &s_float);
    }
    pd_bind(&x->x_obj.ob_pd, ctlin_sym);
    return (x);
}

static void ctlin_list(t_ctlin *x, t_symbol *s, int argc, t_atom *argv)
{
    t_float ctlnumber = atom_getfloatarg(0, argc, argv);
    t_float value = atom_getfloatarg(1, argc, argv);
    t_float channel = atom_getfloatarg(2, argc, argv);
    if (x->x_ctlno >= 0 && x->x_ctlno != ctlnumber) return;
    if (x->x_channel > 0  && x->x_channel != channel) return;
    if (x->x_channel == 0) outlet_float(x->x_outlet3, channel);
    if (x->x_ctlno < 0) outlet_float(x->x_outlet2, ctlnumber);
    outlet_float(x->x_outlet1, value);
}

static void ctlin_free(t_ctlin *x)
{
    pd_unbind(&x->x_obj.ob_pd, ctlin_sym);
}

void ctlin_setup(void)
{
    ctlin_class = class_new(gensym("ctlin"), (t_newmethod)ctlin_new, 
        (t_method)ctlin_free, sizeof(t_ctlin),
            CLASS_NOINLET, A_GIMME, 0);
    class_addlist(ctlin_class, ctlin_list);
    class_sethelpsymbol(ctlin_class, gensym("midi"));
    ctlin_sym = gensym("#ctlin");
}