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

svn path=/trunk/; revision=14610

1 files changed, 71 insertions, 0 deletions

diff --git a/externals/vanilla/dac~.c b/externals/vanilla/dac~.c
new file mode 100644
index 00000000..4e59e23f
--- /dev/null
+++ b/externals/vanilla/dac~.c
@@ -0,0 +1,71 @@
+/* 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"
+
+/* ----------------------------- dac~ --------------------------- */
+static t_class *dac_class;
+
+typedef struct _dac
+{
+    t_object x_obj;
+    t_int x_n;
+    t_int *x_vec;
+    t_float x_f;
+} t_dac;
+
+static void *dac_new(t_symbol *s, int argc, t_atom *argv)
+{
+    t_dac *x = (t_dac *)pd_new(dac_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 = 1; i < argc; i++)
+        inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
+    x->x_f = 0;
+    return (x);
+}
+
+static void dac_dsp(t_dac *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("dac~: bad vector size");
+        else if (ch >= 0 && ch < sys_get_outchannels())
+            dsp_add(plus_perform, 4, sys_soundout + DEFDACBLKSIZE*ch,
+                (*sp2)->s_vec, sys_soundout + DEFDACBLKSIZE*ch, DEFDACBLKSIZE);
+    }    
+}
+
+static void dac_free(t_dac *x)
+{
+    freebytes(x->x_vec, x->x_n * sizeof(*x->x_vec));
+}
+
+void dac_tilde_setup(void)
+{
+    dac_class = class_new(gensym("dac~"), (t_newmethod)dac_new,
+        (t_method)dac_free, sizeof(t_dac), 0, A_GIMME, 0);
+    CLASS_MAINSIGNALIN(dac_class, t_dac, x_f);
+    class_addmethod(dac_class, (t_method)dac_dsp, gensym("dsp"), A_CANT, 0);
+    class_sethelpsymbol(dac_class, gensym("adc~_dac~"));
+}