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authorGuenter Geiger <ggeiger@users.sourceforge.net>2002-08-08 16:42:32 +0000
committerGuenter Geiger <ggeiger@users.sourceforge.net>2002-08-08 16:42:32 +0000
commitcee98b59f1adf987b6dcbc771299bb9d6d75b843 (patch)
treee35bd758a5219561b547b38aafe52b5b096f8a73 /pd/extra/lrshift~/lrshift~.c
parent57045df5fe3ec557e57dc7434ac1a07b5521bffc (diff)
added missing tildes
svn path=/trunk/; revision=81
Diffstat (limited to 'pd/extra/lrshift~/lrshift~.c')
-rw-r--r--pd/extra/lrshift~/lrshift~.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/pd/extra/lrshift~/lrshift~.c b/pd/extra/lrshift~/lrshift~.c
new file mode 100644
index 00000000..285696e2
--- /dev/null
+++ b/pd/extra/lrshift~/lrshift~.c
@@ -0,0 +1,74 @@
+#include "m_pd.h"
+
+/* ------------------------ lrshift~ ----------------------------- */
+
+static t_class *lrshift_tilde_class;
+
+typedef struct _lrshift_tilde
+{
+ t_object x_obj;
+ int x_n;
+} t_lrshift_tilde;
+
+static t_int *leftshift_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out= (t_float *)(w[2]);
+ int n = (int)(w[3]);
+ int shift = (int)(w[4]);
+ in += shift;
+ n -= shift;
+ while (n--)
+ *out++ = *in++;
+ while (shift--)
+ *out++ = 0;
+ return (w+5);
+}
+
+static t_int *rightshift_perform(t_int *w)
+{
+ t_float *in = (t_float *)(w[1]);
+ t_float *out= (t_float *)(w[2]);
+ int n = (int)(w[3]);
+ int shift = (int)(w[4]);
+ n -= shift;
+ in -= shift;
+ while (n--)
+ *--out = *--in;
+ while (shift--)
+ *--out = 0;
+ return (w+5);
+}
+
+static void lrshift_tilde_dsp(t_lrshift_tilde *x, t_signal **sp)
+{
+ int n = sp[0]->s_n;
+ int shift = x->x_n;
+ if (shift > n)
+ shift = n;
+ if (shift < -n)
+ shift = -n;
+ if (shift < 0)
+ dsp_add(rightshift_perform, 4,
+ sp[0]->s_vec + n, sp[1]->s_vec + n, n, -shift);
+ else dsp_add(leftshift_perform, 4,
+ sp[0]->s_vec, sp[1]->s_vec, n, shift);
+}
+
+static void *lrshift_tilde_new(t_floatarg f)
+{
+ t_lrshift_tilde *x = (t_lrshift_tilde *)pd_new(lrshift_tilde_class);
+ x->x_n = f;
+ outlet_new(&x->x_obj, gensym("signal"));
+ return (x);
+}
+
+void lrshift_tilde_setup(void)
+{
+ lrshift_tilde_class = class_new(gensym("lrshift~"),
+ (t_newmethod)lrshift_tilde_new, 0, sizeof(t_lrshift_tilde), 0,
+ A_DEFFLOAT, 0);
+ class_addmethod(lrshift_tilde_class, nullfn, gensym("signal"), 0);
+ class_addmethod(lrshift_tilde_class, (t_method)lrshift_tilde_dsp,
+ gensym("dsp"), 0);
+}