diff options
author | Hans-Christoph Steiner <eighthave@users.sourceforge.net> | 2010-12-13 02:53:10 +0000 |
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committer | Hans-Christoph Steiner <eighthave@users.sourceforge.net> | 2010-12-13 02:53:10 +0000 |
commit | f401bb9d53a662e2e78639d0d07f0d8e82e3bf7a (patch) | |
tree | 309403e234643cdaeb2a22f6429c52483b68a002 /externals/vanilla/delread~.c | |
parent | 07e75153e9c6c6eb0ca69e12510949d9f452e6f7 (diff) |
refactored d_delay.c into delwrite~.h delwrite~.c delread~.c vd~.c
svn path=/trunk/; revision=14612
Diffstat (limited to 'externals/vanilla/delread~.c')
-rw-r--r-- | externals/vanilla/delread~.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/externals/vanilla/delread~.c b/externals/vanilla/delread~.c new file mode 100644 index 00000000..fb5700eb --- /dev/null +++ b/externals/vanilla/delread~.c @@ -0,0 +1,100 @@ +/* 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. */ + +/* send~, delread~, throw~, catch~ */ + +#include "m_pd.h" +#include "delwrite~.h" + +static t_class *sigdelread_class; + +typedef struct _sigdelread +{ + t_object x_obj; + t_symbol *x_sym; + t_float x_deltime; /* delay in msec */ + int x_delsamps; /* delay in samples */ + t_float x_sr; /* samples per msec */ + t_float x_n; /* vector size */ + int x_zerodel; /* 0 or vecsize depending on read/write order */ +} t_sigdelread; + +static void sigdelread_float(t_sigdelread *x, t_float f); + +static void *sigdelread_new(t_symbol *s, t_floatarg f) +{ + t_sigdelread *x = (t_sigdelread *)pd_new(sigdelread_class); + x->x_sym = s; + x->x_sr = 1; + x->x_n = 1; + x->x_zerodel = 0; + sigdelread_float(x, f); + outlet_new(&x->x_obj, &s_signal); + return (x); +} + +static void sigdelread_float(t_sigdelread *x, t_float f) +{ + int samps; + t_sigdelwrite *delwriter = + (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class); + x->x_deltime = f; + if (delwriter) + { + int delsize = delwriter->x_cspace.c_n; + x->x_delsamps = (int)(0.5 + x->x_sr * x->x_deltime) + + x->x_n - x->x_zerodel; + if (x->x_delsamps < x->x_n) x->x_delsamps = x->x_n; + else if (x->x_delsamps > delwriter->x_cspace.c_n - DEFDELVS) + x->x_delsamps = delwriter->x_cspace.c_n - DEFDELVS; + } +} + +static t_int *sigdelread_perform(t_int *w) +{ + t_sample *out = (t_sample *)(w[1]); + t_delwritectl *c = (t_delwritectl *)(w[2]); + int delsamps = *(int *)(w[3]); + int n = (int)(w[4]); + int phase = c->c_phase - delsamps, nsamps = c->c_n; + t_sample *vp = c->c_vec, *bp, *ep = vp + (c->c_n + XTRASAMPS); + if (phase < 0) phase += nsamps; + bp = vp + phase; + + while (n--) + { + *out++ = *bp++; + if (bp == ep) bp -= nsamps; + } + return (w+5); +} + +static void sigdelread_dsp(t_sigdelread *x, t_signal **sp) +{ + t_sigdelwrite *delwriter = + (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class); + x->x_sr = sp[0]->s_sr * 0.001; + x->x_n = sp[0]->s_n; + if (delwriter) + { + sigdelwrite_checkvecsize(delwriter, sp[0]->s_n); + x->x_zerodel = (delwriter->x_sortno == ugen_getsortno() ? + 0 : delwriter->x_vecsize); + sigdelread_float(x, x->x_deltime); + dsp_add(sigdelread_perform, 4, + sp[0]->s_vec, &delwriter->x_cspace, &x->x_delsamps, sp[0]->s_n); + } + else if (*x->x_sym->s_name) + error("delread~: %s: no such delwrite~",x->x_sym->s_name); +} + +void delread_tilde_setup(void) +{ + sigdelread_class = class_new(gensym("delread~"), + (t_newmethod)sigdelread_new, 0, + sizeof(t_sigdelread), 0, A_DEFSYM, A_DEFFLOAT, 0); + class_addmethod(sigdelread_class, (t_method)sigdelread_dsp, + gensym("dsp"), 0); + class_addfloat(sigdelread_class, (t_method)sigdelread_float); +} |