forked from len0rd/rockbox
0d4560cb03
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21626 a1c6a512-1295-4272-9138-f99709370657
319 lines
7.1 KiB
C
319 lines
7.1 KiB
C
/* Copyright (c) 1997-1999 Miller Puckette.
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* For information on usage and redistribution, and for a DISCLAIMER OF ALL
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* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
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#include "m_pd.h"
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#include "m_imp.h"
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#ifdef ROCKBOX
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void pd_checkgui(t_pd *x, t_symbol *s);
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#else /* ROCKBOX */
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#include <stdlib.h>
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#endif /* ROCKBOX */
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/* FIXME no out-of-memory testing yet! */
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t_pd *pd_new(t_class *c)
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{
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t_pd *x;
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if (!c)
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bug ("pd_new: apparently called before setup routine");
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x = (t_pd *)t_getbytes(c->c_size);
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*x = c;
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if (c->c_patchable)
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{
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((t_object *)x)->ob_inlet = 0;
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((t_object *)x)->ob_outlet = 0;
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}
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return (x);
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}
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void pd_free(t_pd *x)
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{
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t_class *c = *x;
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if (c->c_freemethod) (*(t_gotfn)(c->c_freemethod))(x);
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if (c->c_patchable)
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{
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while (((t_object *)x)->ob_outlet)
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outlet_free(((t_object *)x)->ob_outlet);
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while (((t_object *)x)->ob_inlet)
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inlet_free(((t_object *)x)->ob_inlet);
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if (((t_object *)x)->ob_binbuf)
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binbuf_free(((t_object *)x)->ob_binbuf);
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}
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if (c->c_size) t_freebytes(x, c->c_size);
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}
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void gobj_save(t_gobj *x, t_binbuf *b)
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{
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t_class *c = x->g_pd;
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if (c->c_savefn)
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(c->c_savefn)(x, b);
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}
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/* deal with several objects bound to the same symbol. If more than one, we
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actually bind a collection object to the symbol, which forwards messages sent
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to the symbol. */
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static t_class *bindlist_class;
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typedef struct _bindelem
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{
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t_pd *e_who;
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struct _bindelem *e_next;
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} t_bindelem;
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typedef struct _bindlist
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{
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t_pd b_pd;
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t_bindelem *b_list;
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} t_bindlist;
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static void bindlist_bang(t_bindlist *x)
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{
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t_bindelem *e;
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for (e = x->b_list; e; e = e->e_next)
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pd_bang(e->e_who);
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}
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static void bindlist_float(t_bindlist *x, t_float f)
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{
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t_bindelem *e;
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for (e = x->b_list; e; e = e->e_next) {
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pd_float(e->e_who, f);
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}
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}
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static void bindlist_symbol(t_bindlist *x, t_symbol *s)
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{
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t_bindelem *e;
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for (e = x->b_list; e; e = e->e_next)
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pd_symbol(e->e_who, s);
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}
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static void bindlist_pointer(t_bindlist *x, t_gpointer *gp)
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{
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t_bindelem *e;
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for (e = x->b_list; e; e = e->e_next)
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pd_pointer(e->e_who, gp);
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}
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static void bindlist_list(t_bindlist *x, t_symbol *s,
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int argc, t_atom *argv)
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{
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t_bindelem *e;
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for (e = x->b_list; e; e = e->e_next)
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pd_list(e->e_who, s, argc, argv);
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}
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static void bindlist_anything(t_bindlist *x, t_symbol *s,
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int argc, t_atom *argv)
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{
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t_bindelem *e;
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for (e = x->b_list; e; e = e->e_next)
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pd_typedmess(e->e_who, s, argc, argv);
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}
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void m_pd_setup(void)
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{
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bindlist_class = class_new(gensym("bindlist"), 0, 0,
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sizeof(t_bindlist), CLASS_PD, 0);
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class_addbang(bindlist_class, bindlist_bang);
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class_addfloat(bindlist_class, (t_method)bindlist_float);
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class_addsymbol(bindlist_class, bindlist_symbol);
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class_addpointer(bindlist_class, bindlist_pointer);
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class_addlist(bindlist_class, bindlist_list);
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class_addanything(bindlist_class, bindlist_anything);
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}
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void pd_bind(t_pd *x, t_symbol *s)
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{
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pd_checkgui(x,s);
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if (s->s_thing)
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{
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if (*s->s_thing == bindlist_class)
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{
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t_bindlist *b = (t_bindlist *)s->s_thing;
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t_bindelem *e = (t_bindelem *)getbytes(sizeof(t_bindelem));
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e->e_next = b->b_list;
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e->e_who = x;
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b->b_list = e;
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}
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else
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{
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t_bindlist *b = (t_bindlist *)pd_new(bindlist_class);
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t_bindelem *e1 = (t_bindelem *)getbytes(sizeof(t_bindelem));
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t_bindelem *e2 = (t_bindelem *)getbytes(sizeof(t_bindelem));
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b->b_list = e1;
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e1->e_who = x;
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e1->e_next = e2;
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e2->e_who = s->s_thing;
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e2->e_next = 0;
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s->s_thing = &b->b_pd;
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}
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}
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else s->s_thing = x;
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}
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void pd_unbind(t_pd *x, t_symbol *s)
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{
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if (s->s_thing == x) s->s_thing = 0;
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else if (s->s_thing && *s->s_thing == bindlist_class)
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{
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/* bindlists always have at least two elements... if the number
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goes down to one, get rid of the bindlist and bind the symbol
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straight to the remaining element. */
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t_bindlist *b = (t_bindlist *)s->s_thing;
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t_bindelem *e, *e2;
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if ((e = b->b_list)->e_who == x)
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{
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b->b_list = e->e_next;
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freebytes(e, sizeof(t_bindelem));
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}
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else for (e = b->b_list; (e2 = e->e_next); e = e2)
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if (e2->e_who == x)
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{
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e->e_next = e2->e_next;
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freebytes(e2, sizeof(t_bindelem));
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break;
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}
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if (!b->b_list->e_next)
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{
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s->s_thing = b->b_list->e_who;
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freebytes(b->b_list, sizeof(t_bindelem));
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pd_free(&b->b_pd);
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}
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}
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else pd_error(x, "%s: couldn't unbind", s->s_name);
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}
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void zz(void) {}
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t_pd *pd_findbyclass(t_symbol *s, t_class *c)
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{
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t_pd *x = 0;
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if (!s->s_thing) return (0);
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if (*s->s_thing == c) return (s->s_thing);
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if (*s->s_thing == bindlist_class)
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{
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t_bindlist *b = (t_bindlist *)s->s_thing;
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#ifdef ROCKBOX
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t_bindelem *e;
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#else /* ROCKBOX */
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t_bindelem *e, *e2;
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#endif /* ROCKBOX */
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int warned = 0;
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for (e = b->b_list; e; e = e->e_next)
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if (*e->e_who == c)
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{
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if (x && !warned)
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{
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zz();
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post("warning: %s: multiply defined", s->s_name);
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warned = 1;
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}
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x = e->e_who;
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}
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}
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return x;
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}
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/* stack for maintaining bindings for the #X symbol during nestable loads.
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*/
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typedef struct _gstack
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{
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t_pd *g_what;
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t_symbol *g_loadingabstraction;
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struct _gstack *g_next;
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} t_gstack;
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static t_gstack *gstack_head = 0;
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static t_pd *lastpopped;
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static t_symbol *pd_loadingabstraction;
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int pd_setloadingabstraction(t_symbol *sym)
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{
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t_gstack *foo = gstack_head;
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for (foo = gstack_head; foo; foo = foo->g_next)
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if (foo->g_loadingabstraction == sym)
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return (1);
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pd_loadingabstraction = sym;
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return (0);
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}
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void pd_pushsym(t_pd *x)
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{
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t_gstack *y = (t_gstack *)t_getbytes(sizeof(*y));
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y->g_what = s__X.s_thing;
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y->g_next = gstack_head;
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y->g_loadingabstraction = pd_loadingabstraction;
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pd_loadingabstraction = 0;
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gstack_head = y;
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s__X.s_thing = x;
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}
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void pd_popsym(t_pd *x)
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{
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if (!gstack_head || s__X.s_thing != x) bug("gstack_pop");
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else
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{
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t_gstack *headwas = gstack_head;
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s__X.s_thing = headwas->g_what;
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gstack_head = headwas->g_next;
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t_freebytes(headwas, sizeof(*headwas));
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lastpopped = x;
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}
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}
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void pd_doloadbang(void)
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{
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if (lastpopped)
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pd_vmess(lastpopped, gensym("loadbang"), "");
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lastpopped = 0;
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}
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void pd_bang(t_pd *x)
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{
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(*(*x)->c_bangmethod)(x);
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}
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void pd_float(t_pd *x, t_float f)
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{
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(*(*x)->c_floatmethod)(x, f);
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}
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void pd_pointer(t_pd *x, t_gpointer *gp)
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{
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(*(*x)->c_pointermethod)(x, gp);
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}
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void pd_symbol(t_pd *x, t_symbol *s)
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{
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(*(*x)->c_symbolmethod)(x, s);
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}
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void pd_list(t_pd *x, t_symbol *s, int argc, t_atom *argv)
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{
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#ifdef ROCKBOX
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(void) s;
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#endif
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(*(*x)->c_listmethod)(x, &s_list, argc, argv);
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}
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void mess_init(void);
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void obj_init(void);
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void conf_init(void);
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void glob_init(void);
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void pd_init(void)
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{
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mess_init();
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obj_init();
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conf_init();
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glob_init();
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}
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