refactored d_dac.c into adc~.c and dac~.c

svn path=/trunk/; revision=14610

1 files changed, 114 insertions, 0 deletions

diff --git a/externals/vanilla/adc~.c b/externals/vanilla/adc~.c
new file mode 100644
index 00000000..831a122c
--- /dev/null
+++ b/externals/vanilla/adc~.c
@@ -0,0 +1,114 @@
+/* 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.  */
+
+/*  The dac~ and adc~ routines.
+*/
+
+#include "m_pd.h"
+#include "s_stuff.h"
+
+static t_class *adc_class;
+
+typedef struct _adc
+{
+    t_object x_obj;
+    t_int x_n;
+    t_int *x_vec;
+} t_adc;
+
+static void *adc_new(t_symbol *s, int argc, t_atom *argv)
+{
+    t_adc *x = (t_adc *)pd_new(adc_class);
+    t_atom defarg[2], *ap;
+    int i;
+    if (!argc)
+    {
+        argv = defarg;
+        argc = 2;
+        SETFLOAT(&defarg[0], 1);
+        SETFLOAT(&defarg[1], 2);
+    }
+    x->x_n = argc;
+    x->x_vec = (t_int *)getbytes(argc * sizeof(*x->x_vec));
+    for (i = 0; i < argc; i++)
+        x->x_vec[i] = atom_getintarg(i, argc, argv);
+    for (i = 0; i < argc; i++)
+        outlet_new(&x->x_obj, &s_signal);
+    return (x);
+}
+
+t_int *copy_perform(t_int *w)
+{
+    t_sample *in1 = (t_sample *)(w[1]);
+    t_sample *out = (t_sample *)(w[2]);
+    int n = (int)(w[3]);
+    while (n--) *out++ = *in1++; 
+    return (w+4);
+}
+
+t_int *copy_perf8(t_int *w)
+{
+    t_sample *in1 = (t_sample *)(w[1]);
+    t_sample *out = (t_sample *)(w[2]);
+    int n = (int)(w[3]);
+    
+    for (; n; n -= 8, in1 += 8, out += 8)
+    {
+        t_sample f0 = in1[0];
+        t_sample f1 = in1[1];
+        t_sample f2 = in1[2];
+        t_sample f3 = in1[3];
+        t_sample f4 = in1[4];
+        t_sample f5 = in1[5];
+        t_sample f6 = in1[6];
+        t_sample f7 = in1[7];
+
+        out[0] = f0;
+        out[1] = f1;
+        out[2] = f2;
+        out[3] = f3;
+        out[4] = f4;
+        out[5] = f5;
+        out[6] = f6;
+        out[7] = f7;
+    }
+    return (w+4);
+}
+
+void dsp_add_copy(t_sample *in, t_sample *out, int n)
+{
+    if (n&7)
+        dsp_add(copy_perform, 3, in, out, n);
+    else        
+        dsp_add(copy_perf8, 3, in, out, n);
+}
+
+static void adc_dsp(t_adc *x, t_signal **sp)
+{
+    t_int i, *ip;
+    t_signal **sp2;
+    for (i = x->x_n, ip = x->x_vec, sp2 = sp; i--; ip++, sp2++)
+    {
+        int ch = *ip - 1;
+        if ((*sp2)->s_n != DEFDACBLKSIZE)
+            error("adc~: bad vector size");
+        else if (ch >= 0 && ch < sys_get_inchannels())
+            dsp_add_copy(sys_soundin + DEFDACBLKSIZE*ch,
+                (*sp2)->s_vec, DEFDACBLKSIZE);
+        else dsp_add_zero((*sp2)->s_vec, DEFDACBLKSIZE);
+    }    
+}
+
+static void adc_free(t_adc *x)
+{
+    freebytes(x->x_vec, x->x_n * sizeof(*x->x_vec));
+}
+
+void adc_tilde_setup(void)
+{
+    adc_class = class_new(gensym("adc~"), (t_newmethod)adc_new,
+        (t_method)adc_free, sizeof(t_adc), 0, A_GIMME, 0);
+    class_addmethod(adc_class, (t_method)adc_dsp, gensym("dsp"), A_CANT, 0);
+    class_sethelpsymbol(adc_class, gensym("adc~_dac~"));
+}