diff options
Diffstat (limited to 'externals/vanilla/pipe.c')
| -rw-r--r-- | externals/vanilla/pipe.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/externals/vanilla/pipe.c b/externals/vanilla/pipe.c new file mode 100644 index 00000000..843fd732 --- /dev/null +++ b/externals/vanilla/pipe.c @@ -0,0 +1,240 @@ +/* Copyright (c) 1997-1999 Miller Puckette. +* For information on usage and redistribution, and for a DISCLAIMER OF ALL +* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */ + +/* clock objects */ + +#include "m_pd.h" +#include <stdio.h> + +static t_class *pipe_class; + +typedef struct _hang +{ + t_clock *h_clock; + struct _hang *h_next; + struct _pipe *h_owner; + t_gpointer *h_gp; + union word h_vec[1]; /* not the actual number. */ +} t_hang; + +typedef struct pipeout +{ + t_atom p_atom; + t_outlet *p_outlet; +} t_pipeout; + +typedef struct _pipe +{ + t_object x_obj; + int x_n; + int x_nptr; + t_float x_deltime; + t_pipeout *x_vec; + t_gpointer *x_gp; + t_hang *x_hang; +} t_pipe; + +static void *pipe_new(t_symbol *s, int argc, t_atom *argv) +{ + t_pipe *x = (t_pipe *)pd_new(pipe_class); + t_atom defarg, *ap; + t_pipeout *vec, *vp; + t_gpointer *gp; + int nptr = 0; + int i; + t_float deltime; + if (argc) + { + if (argv[argc-1].a_type != A_FLOAT) + { + char stupid[80]; + atom_string(&argv[argc-1], stupid, 79); + pd_error(x, "pipe: %s: bad time delay value", stupid); + deltime = 0; + } + else deltime = argv[argc-1].a_w.w_float; + argc--; + } + else deltime = 0; + if (!argc) + { + argv = &defarg; + argc = 1; + SETFLOAT(&defarg, 0); + } + x->x_n = argc; + vec = x->x_vec = (t_pipeout *)getbytes(argc * sizeof(*x->x_vec)); + + for (i = argc, ap = argv; i--; ap++) + if (ap->a_type == A_SYMBOL && *ap->a_w.w_symbol->s_name == 'p') + nptr++; + + gp = x->x_gp = (t_gpointer *)t_getbytes(nptr * sizeof (*gp)); + x->x_nptr = nptr; + + for (i = 0, vp = vec, ap = argv; i < argc; i++, ap++, vp++) + { + if (ap->a_type == A_FLOAT) + { + vp->p_atom = *ap; + vp->p_outlet = outlet_new(&x->x_obj, &s_float); + if (i) floatinlet_new(&x->x_obj, &vp->p_atom.a_w.w_float); + } + else if (ap->a_type == A_SYMBOL) + { + char c = *ap->a_w.w_symbol->s_name; + if (c == 's') + { + SETSYMBOL(&vp->p_atom, &s_symbol); + vp->p_outlet = outlet_new(&x->x_obj, &s_symbol); + if (i) symbolinlet_new(&x->x_obj, &vp->p_atom.a_w.w_symbol); + } + else if (c == 'p') + { + vp->p_atom.a_type = A_POINTER; + vp->p_atom.a_w.w_gpointer = gp; + gpointer_init(gp); + vp->p_outlet = outlet_new(&x->x_obj, &s_pointer); + if (i) pointerinlet_new(&x->x_obj, gp); + gp++; + } + else + { + if (c != 'f') pd_error(x, "pipe: %s: bad type", + ap->a_w.w_symbol->s_name); + SETFLOAT(&vp->p_atom, 0); + vp->p_outlet = outlet_new(&x->x_obj, &s_float); + if (i) floatinlet_new(&x->x_obj, &vp->p_atom.a_w.w_float); + } + } + } + floatinlet_new(&x->x_obj, &x->x_deltime); + x->x_hang = 0; + x->x_deltime = deltime; + return (x); +} + +static void hang_free(t_hang *h) +{ + t_pipe *x = h->h_owner; + t_gpointer *gp; + int i; + for (gp = h->h_gp, i = x->x_nptr; i--; gp++) + gpointer_unset(gp); + freebytes(h->h_gp, x->x_nptr * sizeof(*h->h_gp)); + clock_free(h->h_clock); + freebytes(h, sizeof(*h) + (x->x_n - 1) * sizeof(*h->h_vec)); +} + +static void hang_tick(t_hang *h) +{ + t_pipe *x = h->h_owner; + t_hang *h2, *h3; + t_pipeout *p; + int i; + union word *w; + if (x->x_hang == h) x->x_hang = h->h_next; + else for (h2 = x->x_hang; h3 = h2->h_next; h2 = h3) + { + if (h3 == h) + { + h2->h_next = h3->h_next; + break; + } + } + for (i = x->x_n, p = x->x_vec + (x->x_n - 1), w = h->h_vec + (x->x_n - 1); + i--; p--, w--) + { + switch (p->p_atom.a_type) + { + case A_FLOAT: outlet_float(p->p_outlet, w->w_float); break; + case A_SYMBOL: outlet_symbol(p->p_outlet, w->w_symbol); break; + case A_POINTER: + if (gpointer_check(w->w_gpointer, 1)) + outlet_pointer(p->p_outlet, w->w_gpointer); + else pd_error(x, "pipe: stale pointer"); + break; + } + } + hang_free(h); +} + +static void pipe_list(t_pipe *x, t_symbol *s, int ac, t_atom *av) +{ + t_hang *h = (t_hang *) + getbytes(sizeof(*h) + (x->x_n - 1) * sizeof(*h->h_vec)); + t_gpointer *gp, *gp2; + t_pipeout *p; + int i, n = x->x_n; + t_atom *ap; + t_word *w; + h->h_gp = (t_gpointer *)getbytes(x->x_nptr * sizeof(t_gpointer)); + if (ac > n) + { + if (av[n].a_type == A_FLOAT) + x->x_deltime = av[n].a_w.w_float; + else pd_error(x, "pipe: symbol or pointer in time inlet"); + ac = n; + } + for (i = 0, gp = x->x_gp, p = x->x_vec, ap = av; i < ac; + i++, p++, ap++) + { + switch (p->p_atom.a_type) + { + case A_FLOAT: p->p_atom.a_w.w_float = atom_getfloat(ap); break; + case A_SYMBOL: p->p_atom.a_w.w_symbol = atom_getsymbol(ap); break; + case A_POINTER: + gpointer_unset(gp); + if (ap->a_type != A_POINTER) + pd_error(x, "pipe: bad pointer"); + else + { + *gp = *(ap->a_w.w_gpointer); + if (gp->gp_stub) gp->gp_stub->gs_refcount++; + } + gp++; + } + } + for (i = 0, gp = x->x_gp, gp2 = h->h_gp, p = x->x_vec, w = h->h_vec; + i < n; i++, p++, w++) + { + if (p->p_atom.a_type == A_POINTER) + { + if (gp->gp_stub) gp->gp_stub->gs_refcount++; + w->w_gpointer = gp2; + *gp2++ = *gp++; + } + else *w = p->p_atom.a_w; + } + h->h_next = x->x_hang; + x->x_hang = h; + h->h_owner = x; + h->h_clock = clock_new(h, (t_method)hang_tick); + clock_delay(h->h_clock, (x->x_deltime >= 0 ? x->x_deltime : 0)); +} + +static void pipe_flush(t_pipe *x) +{ + while (x->x_hang) hang_tick(x->x_hang); +} + +static void pipe_clear(t_pipe *x) +{ + t_hang *hang; + while (hang = x->x_hang) + { + x->x_hang = hang->h_next; + hang_free(hang); + } +} + +static void pipe_setup(void) +{ + pipe_class = class_new(gensym("pipe"), + (t_newmethod)pipe_new, (t_method)pipe_clear, + sizeof(t_pipe), 0, A_GIMME, 0); + class_addlist(pipe_class, pipe_list); + class_addmethod(pipe_class, (t_method)pipe_flush, gensym("flush"), 0); + class_addmethod(pipe_class, (t_method)pipe_clear, gensym("clear"), 0); +} |