aboutsummaryrefslogtreecommitdiff
path: root/bartlett~.c
diff options
context:
space:
mode:
Diffstat (limited to 'bartlett~.c')
-rw-r--r--bartlett~.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/bartlett~.c b/bartlett~.c
new file mode 100644
index 0000000..61d1127
--- /dev/null
+++ b/bartlett~.c
@@ -0,0 +1,85 @@
+/* bartlett~ - bartlett windowing function for Pure Data
+**
+** Copyright (C) 2002 Joseph A. Sarlo
+**
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License
+** as published by the Free Software Foundation; either version 2
+** of the License, or (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** jsarlo@mambo.peabody.jhu.edu
+*/
+
+#include "m_pd.h"
+#include "windowFunctions.h"
+#include <stdlib.h>
+#ifdef NT
+#pragma warning( disable : 4244 )
+#pragma warning( disable : 4305 )
+#endif
+#define DEFBLOCKSIZE 64
+
+static t_class *bartlett_class;
+
+typedef struct _bartlett {
+ t_object x_obj;
+ int x_blocksize;
+ float *x_table;
+} t_bartlett;
+
+static t_int* bartlett_perform(t_int *w) {
+ t_bartlett *x = (t_bartlett *)(w[1]);
+ t_float *in = (t_float *)(w[2]);
+ t_float *out = (t_float *)(w[3]);
+ int n = (int)(w[4]);
+ int i;
+ if (x->x_blocksize != n) {
+ if (x->x_blocksize < n) {
+ x->x_table = realloc(x->x_table, n * sizeof(float));
+ }
+ x->x_blocksize = n;
+ fillBartlett(x->x_table, x->x_blocksize);
+ }
+ for (i = 0; i < n; i++) {
+ *out++ = *(in++) * x->x_table[i];
+ }
+ return (w + 5);
+}
+
+static void bartlett_dsp(t_bartlett *x, t_signal **sp) {
+ dsp_add(bartlett_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+static void* bartlett_new(void) {
+ t_bartlett *x = (t_bartlett *)pd_new(bartlett_class);
+ x->x_blocksize = DEFBLOCKSIZE;
+ x->x_table = malloc(x->x_blocksize * sizeof(float));
+ fillBartlett(x->x_table, x->x_blocksize);
+ outlet_new(&x->x_obj, gensym("signal"));
+ return (x);
+}
+
+static void bartlett_free(t_bartlett *x) {
+ free(x->x_table);
+}
+
+void bartlett_tilde_setup(void) {
+ bartlett_class = class_new(gensym("bartlett~"),
+ (t_newmethod)bartlett_new,
+ (t_method)bartlett_free,
+ sizeof(t_bartlett),
+ 0,
+ A_DEFFLOAT,
+ 0);
+ class_addmethod(bartlett_class, nullfn, gensym("signal"), 0);
+ class_addmethod(bartlett_class, (t_method)bartlett_dsp, gensym("dsp"), 0);
+}