apps/plugins/pdbox/PDa/intern/delread~.c

   1 #include <m_pd.h>
   2 #include <m_fixed.h>
   3 #include "delay.h"
   4
   5 extern int ugen_getsortno(void);
   6
   7 #define DEFDELVS 64             /* LATER get this from canvas at DSP time */
   8 static int delread_zero = 0;    /* four bytes of zero for delread~, vd~ */
   9
  10 static t_class *sigdelread_class;
  11
  12 typedef struct _sigdelread
  13 {
  14     t_object x_obj;
  15     t_symbol *x_sym;
  16     t_float x_deltime;  /* delay in msec */
  17     int x_delsamps;     /* delay in samples */
  18     t_float x_sr;       /* samples per msec */
  19     t_float x_n;        /* vector size */
  20     int x_zerodel;      /* 0 or vecsize depending on read/write order */
  21 } t_sigdelread;
  22
  23 static void sigdelread_float(t_sigdelread *x, t_float f);
  24
  25 static void *sigdelread_new(t_symbol *s, t_floatarg f)
  26 {
  27     t_sigdelread *x = (t_sigdelread *)pd_new(sigdelread_class);
  28     x->x_sym = s;
  29     x->x_sr = 1;
  30     x->x_n = 1;
  31     x->x_zerodel = 0;
  32     sigdelread_float(x, f);
  33     outlet_new(&x->x_obj, &s_signal);
  34     return (x);
  35 }
  36
  37 static void sigdelread_float(t_sigdelread *x, t_float f)
  38 {
  39     int samps;
  40     t_sigdelwrite *delwriter =
  41         (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
  42     x->x_deltime = f;
  43     if (delwriter)
  44     {
  45         int delsize = delwriter->x_cspace.c_n;
  46         x->x_delsamps = (int)(0.5 + x->x_sr * x->x_deltime)
  47             + x->x_n - x->x_zerodel;
  48         if (x->x_delsamps < x->x_n) x->x_delsamps = x->x_n;
  49         else if (x->x_delsamps > delwriter->x_cspace.c_n - DEFDELVS)
  50             x->x_delsamps = delwriter->x_cspace.c_n - DEFDELVS;
  51     }
  52 }
  53
  54 static t_int *sigdelread_perform(t_int *w)
  55 {
  56     t_sample *out = (t_sample *)(w[1]);
  57     t_delwritectl *c = (t_delwritectl *)(w[2]);
  58     int delsamps = *(int *)(w[3]);
  59     int n = (int)(w[4]);
  60     int phase = c->c_phase - delsamps, nsamps = c->c_n;
  61     t_sample *vp = c->c_vec, *bp, *ep = vp + (c->c_n + XTRASAMPS);
  62
  63     if (phase < 0) phase += nsamps;
  64     bp = vp + phase;
  65     while (n--)
  66     {
  67         *out++ = *bp++;
  68         if (bp == ep) bp -= nsamps;
  69     }
  70     return (w+5);
  71 }
  72
  73 static void sigdelread_dsp(t_sigdelread *x, t_signal **sp)
  74 {
  75     t_sigdelwrite *delwriter =
  76         (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
  77     x->x_sr = sp[0]->s_sr * 0.001;
  78     x->x_n = sp[0]->s_n;
  79     if (delwriter)
  80     {
  81         sigdelwrite_checkvecsize(delwriter, sp[0]->s_n);
  82         x->x_zerodel = (delwriter->x_sortno == ugen_getsortno() ?
  83             0 : delwriter->x_vecsize);
  84         sigdelread_float(x, x->x_deltime);
  85         dsp_add(sigdelread_perform, 4,
  86             sp[0]->s_vec, &delwriter->x_cspace, &x->x_delsamps, sp[0]->s_n);
  87     }
  88     else if (*x->x_sym->s_name)
  89         error("delread~: %s: no such delwrite~",x->x_sym->s_name);
  90 }
  91
  92 void delread_tilde_setup(void)
  93 {
  94     sigdelread_class = class_new(gensym("delread~"),
  95         (t_newmethod)sigdelread_new, 0,
  96         sizeof(t_sigdelread), 0, A_DEFSYM, A_DEFFLOAT, 0);
  97     class_addmethod(sigdelread_class, (t_method)sigdelread_dsp,
  98         gensym("dsp"), 0);
  99     class_addfloat(sigdelread_class, (t_method)sigdelread_float);
 100 }
 101 #include <m_pd.h>
 102 #include <m_fixed.h>
 103 #include "delay.h"
 104
 105 extern int ugen_getsortno(void);
 106
 107 #define DEFDELVS 64             /* LATER get this from canvas at DSP time */
 108 static int delread_zero = 0;    /* four bytes of zero for delread~, vd~ */
 109
 110 static t_class *sigdelread_class;
 111
 112 typedef struct _sigdelread
 113 {
 114     t_object x_obj;
 115     t_symbol *x_sym;
 116     t_float x_deltime;  /* delay in msec */
 117     int x_delsamps;     /* delay in samples */
 118     t_float x_sr;       /* samples per msec */
 119     t_float x_n;        /* vector size */
 120     int x_zerodel;      /* 0 or vecsize depending on read/write order */
 121 } t_sigdelread;
 122
 123 static void sigdelread_float(t_sigdelread *x, t_float f);
 124
 125 static void *sigdelread_new(t_symbol *s, t_floatarg f)
 126 {
 127     t_sigdelread *x = (t_sigdelread *)pd_new(sigdelread_class);
 128     x->x_sym = s;
 129     x->x_sr = 1;
 130     x->x_n = 1;
 131     x->x_zerodel = 0;
 132     sigdelread_float(x, f);
 133     outlet_new(&x->x_obj, &s_signal);
 134     return (x);
 135 }
 136
 137 static void sigdelread_float(t_sigdelread *x, t_float f)
 138 {
 139     int samps;
 140     t_sigdelwrite *delwriter =
 141         (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
 142     x->x_deltime = f;
 143     if (delwriter)
 144     {
 145         int delsize = delwriter->x_cspace.c_n;
 146         x->x_delsamps = (int)(0.5 + x->x_sr * x->x_deltime)
 147             + x->x_n - x->x_zerodel;
 148         if (x->x_delsamps < x->x_n) x->x_delsamps = x->x_n;
 149         else if (x->x_delsamps > delwriter->x_cspace.c_n - DEFDELVS)
 150             x->x_delsamps = delwriter->x_cspace.c_n - DEFDELVS;
 151     }
 152 }
 153
 154 static t_int *sigdelread_perform(t_int *w)
 155 {
 156     t_sample *out = (t_sample *)(w[1]);
 157     t_delwritectl *c = (t_delwritectl *)(w[2]);
 158     int delsamps = *(int *)(w[3]);
 159     int n = (int)(w[4]);
 160     int phase = c->c_phase - delsamps, nsamps = c->c_n;
 161     t_sample *vp = c->c_vec, *bp, *ep = vp + (c->c_n + XTRASAMPS);
 162
 163     if (phase < 0) phase += nsamps;
 164     bp = vp + phase;
 165     while (n--)
 166     {
 167         *out++ = *bp++;
 168         if (bp == ep) bp -= nsamps;
 169     }
 170     return (w+5);
 171 }
 172
 173 static void sigdelread_dsp(t_sigdelread *x, t_signal **sp)
 174 {
 175     t_sigdelwrite *delwriter =
 176         (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
 177     x->x_sr = sp[0]->s_sr * 0.001;
 178     x->x_n = sp[0]->s_n;
 179     if (delwriter)
 180     {
 181         sigdelwrite_checkvecsize(delwriter, sp[0]->s_n);
 182         x->x_zerodel = (delwriter->x_sortno == ugen_getsortno() ?
 183             0 : delwriter->x_vecsize);
 184         sigdelread_float(x, x->x_deltime);
 185         dsp_add(sigdelread_perform, 4,
 186             sp[0]->s_vec, &delwriter->x_cspace, &x->x_delsamps, sp[0]->s_n);
 187     }
 188     else if (*x->x_sym->s_name)
 189         error("delread~: %s: no such delwrite~",x->x_sym->s_name);
 190 }
 191
 192 void delread_tilde_setup(void)
 193 {
 194     sigdelread_class = class_new(gensym("delread~"),
 195         (t_newmethod)sigdelread_new, 0,
 196         sizeof(t_sigdelread), 0, A_DEFSYM, A_DEFFLOAT, 0);
 197     class_addmethod(sigdelread_class, (t_method)sigdelread_dsp,
 198         gensym("dsp"), 0);
 199     class_addfloat(sigdelread_class, (t_method)sigdelread_float);
 200 }