[PD-cvs] externals/mrpeach/osc pipelist.c, NONE, 1.1 pipelist-help.pd, NONE, 1.1

[Martin Peach]

Update of /cvsroot/pure-data/externals/mrpeach/osc
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv25119

Added Files:
	pipelist.c pipelist-help.pd 
Log Message:
pipelist is like pipe for lists. It can be used with unpackOSC to delay timetagged messages.
 


--- NEW FILE: pipelist-help.pd ---
#N canvas 170 252 558 300 10;
#X obj 112 129 pipelist 1000;
#X msg 198 83 5000;
#X floatatom 198 107 5 0 0 0 - - -;
#X floatatom 222 42 5 0 0 0 - - -;
#X floatatom 181 42 5 0 0 0 - - -;
#X obj 112 62 pack s s 3 4 5;
#X obj 112 0 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1
-1;
#X msg 135 -1 tik;
#X msg 57 13 alpha;
#X msg 50 41 beta;
#X floatatom 63 90 5 0 0 0 - - -;
#X obj 112 196 print;
#X obj 130 107 symbol;
#X msg 135 83 bb;
#X text 195 1 pipelist delays lists.;
#X text 237 106 Delay time is in milliseconds.;
#X text 208 131 Argument sets initial delay time.;
#X text 242 218 2007/07/11 Martin Peach;
#X text 229 182 see also:;
#X obj 305 183 pipe;
#X obj 339 183 delay;
#X obj 379 183 timer;
#X obj 135 21 symbol;
#X connect 0 0 11 0;
#X connect 1 0 2 0;
#X connect 2 0 0 1;
#X connect 3 0 5 4;
#X connect 4 0 5 3;
#X connect 5 0 0 0;
#X connect 6 0 5 0;
#X connect 7 0 22 0;
#X connect 8 0 5 0;
#X connect 9 0 5 0;
#X connect 10 0 0 0;
#X connect 12 0 0 0;
#X connect 13 0 12 0;
#X connect 22 0 5 1;

--- NEW FILE: pipelist.c ---
/* pipelist.c 20070711 Martin Peach based on pipe from x_time.c */
#include "m_pd.h" 
/* -------------------------- pipe -------------------------- */

static t_class *pipelist_class;

typedef struct _hang
{
    t_clock             *h_clock;
    struct _hang        *h_next;
    struct _pipelist    *h_owner;
    int                 h_n; /* number of atoms in h_list */
    t_atom              *h_atoms; /* pointer to a list of h_n t_atoms */
} t_hang;

typedef struct _pipelist
{
    t_object    x_obj;
    float       x_deltime;
    t_outlet    *x_pipelistout;
    t_hang      *x_hang;
} t_pipelist;

static void *pipelist_new(t_symbol *s, int argc, t_atom *argv);
static void pipelist_hang_free(t_hang *h);
static void pipelist_hang_tick(t_hang *h);
static void pipelist_list(t_pipelist *x, t_symbol *s, int ac, t_atom *av);
static void pipelist_flush(t_pipelist *x);
static void pipelist_clear(t_pipelist *x);
void pipelist_setup(void);

static void *pipelist_new(t_symbol *s, int argc, t_atom *argv)
{
    t_pipelist  *x = (t_pipelist *)pd_new(pipelist_class);
    float       deltime;

    if (argc)
    { /* We accept one argument to set the delay time, ignore any further args */
        if (argv[0].a_type != A_FLOAT)
        {
            char stupid[80];
            atom_string(&argv[argc-1], stupid, 79);
            post("pipelist: %s: bad time delay value", stupid);
            deltime = 0;
        }
        else deltime = argv[argc-1].a_w.w_float;
    }
    else deltime = 0;

    x->x_pipelistout = outlet_new(&x->x_obj, &s_list);
    floatinlet_new(&x->x_obj, &x->x_deltime);
    x->x_hang = NULL;
    x->x_deltime = deltime;
    return (x);
}

static void pipelist_hang_free(t_hang *h)
{
    freebytes(h->h_atoms, h->h_n*sizeof(t_atom));
    clock_free(h->h_clock);
    freebytes(h, sizeof(t_hang));
}

static void pipelist_hang_tick(t_hang *h)
{
    t_pipelist  *x = h->h_owner;
    t_hang      *h2, *h3;

    /* excise h from the linked list of hangs */
    if (x->x_hang == h) x->x_hang = h->h_next;
    else for (h2 = x->x_hang; ((h3 = h2->h_next)!=NULL); h2 = h3)
    {
        if (h3 == h)
        {
            h2->h_next = h3->h_next;
            break;
        }
    }
    /* output h's list */
    outlet_list(x->x_pipelistout, &s_list, h->h_n, h->h_atoms);
    /* free h */
    pipelist_hang_free(h);
}

static void pipelist_list(t_pipelist *x, t_symbol *s, int ac, t_atom *av)
{
    t_hang *h = (t_hang *)getbytes(sizeof(t_hang));
    int i;

    h->h_n = ac;
    h->h_atoms = (t_atom *)getbytes(h->h_n*sizeof(t_atom));

    for (i = 0; i < h->h_n; ++i)
        h->h_atoms[i] = av[i];
    h->h_next = x->x_hang;
    x->x_hang = h;
    h->h_owner = x;
    h->h_clock = clock_new(h, (t_method)pipelist_hang_tick);
    clock_delay(h->h_clock, (x->x_deltime >= 0 ? x->x_deltime : 0));
}

static void pipelist_flush(t_pipelist *x)
{
    while (x->x_hang) pipelist_hang_tick(x->x_hang);
}

static void pipelist_clear(t_pipelist *x)
{
    t_hang *hang;
    while ((hang = x->x_hang) != NULL)
    {
        x->x_hang = hang->h_next;
        pipelist_hang_free(hang);
    }
}

void pipelist_setup(void)
{
    pipelist_class = class_new(gensym("pipelist"), 
        (t_newmethod)pipelist_new, (t_method)pipelist_clear,
        sizeof(t_pipelist), 0, A_GIMME, 0);
    class_addlist(pipelist_class, pipelist_list);
    class_addmethod(pipelist_class, (t_method)pipelist_flush, gensym("flush"), 0);
    class_addmethod(pipelist_class, (t_method)pipelist_clear, gensym("clear"), 0);
}

/* end of pipelist.c*/