[PD-cvs] SF.net SVN: pure-data: [9900] branches/pd-extended/v0-40/externals/creb/ modules
eighthave at users.sourceforge.net
eighthave at users.sourceforge.net
Sun May 25 01:30:09 CEST 2008
Revision: 9900
http://pure-data.svn.sourceforge.net/pure-data/?rev=9900&view=rev
Author: eighthave
Date: 2008-05-24 16:30:09 -0700 (Sat, 24 May 2008)
Log Message:
-----------
renamed file to actual classname
Added Paths:
-----------
branches/pd-extended/v0-40/externals/creb/modules/bwin~.c
Removed Paths:
-------------
branches/pd-extended/v0-40/externals/creb/modules/window~.c
Copied: branches/pd-extended/v0-40/externals/creb/modules/bwin~.c (from rev 9861, branches/pd-extended/v0-40/externals/creb/modules/window~.c)
===================================================================
--- branches/pd-extended/v0-40/externals/creb/modules/bwin~.c (rev 0)
+++ branches/pd-extended/v0-40/externals/creb/modules/bwin~.c 2008-05-24 23:30:09 UTC (rev 9900)
@@ -0,0 +1,168 @@
+/*
+ * window.c - window generation abstraction
+ * Copyright (c) 2000-2003 by Tom Schouten
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "m_pd.h"
+#include <math.h>
+#include <stdlib.h>
+
+
+static t_class *window_class;
+
+typedef struct _window
+{
+ t_object x_obj;
+ t_float x_f;
+ t_float *x_window;
+ t_int x_size;
+ t_symbol *x_type;
+ t_float x_typearg;
+
+} t_window;
+
+static t_int *window_perform(t_int *w)
+{
+ t_window *x = (t_window *)(w[1]);
+ t_float *in = (t_float *)(w[2]);
+ t_float *out = (t_float *)(w[3]);
+ t_float *window = x->x_window;
+ int n = (int)(w[4]);
+ while (n--)
+ {
+ *out++ = (*in++) * (*window++);
+ }
+ return (w+5);
+}
+
+static void window_size(t_window *x, t_int n)
+{
+ if (x->x_size != n){
+ if (x->x_window) free(x->x_window);
+ x->x_window = malloc(sizeof(float)*n);
+ x->x_size = n;
+ }
+}
+
+
+static void window_type(t_window *x, t_symbol *s, t_float f)
+{
+ int i;
+ float a = 0;
+ float a_inc = 2 * M_PI / (float)(x->x_size);
+ if (!s) s = gensym("hamming");
+ if (s == gensym("hamming")){
+ for (i=0; i<x->x_size; i++){
+ float c = cos(a);
+ x->x_window[i] = (0.54 - 0.46 * c);
+ a += a_inc;
+ }
+ }
+ else if (s == gensym("hann")){
+ for (i=0; i<x->x_size; i++){
+ float c = cos(a);
+ x->x_window[i] = (0.5 - 0.5 * c);
+ a += a_inc;
+ }
+ }
+ else if (s == gensym("hann/hamming")){
+ for (i=0; i<x->x_size; i++) {
+ float c = cos(a);
+ x->x_window[i] = (0.5 - 0.5 * c) / (0.54 - 0.46 * c);
+ a += a_inc;
+ }
+ }
+ else if (s == gensym("bfft_pink")){
+ x->x_window[0] = 1.0f; //DC
+ x->x_window[1] = 1.0f / sqrt((double)(x->x_size>>1)); //NY
+ for (i=2; i<x->x_size; i+=2) {
+ double freq = (double)(i>>1);
+ float amp = sqrt(1.0 / freq);
+ x->x_window[i] = amp;
+ x->x_window[i+1] = amp;
+ }
+ }
+ else if (s == gensym("bfft_blue")){
+ x->x_window[0] = 1.0f; //DC
+ x->x_window[1] = sqrt((double)(x->x_size>>1)); //NY
+ for (i=2; i<x->x_size; i+=2) {
+ double freq = (double)(i>>1);
+ float amp = sqrt(freq);
+ x->x_window[i] = amp;
+ x->x_window[i+1] = amp;
+ }
+ }
+ else if (s == gensym("bfft_db/octave")){
+ float power = f/6.0;
+ x->x_window[0] = 1.0f; //DC
+ x->x_window[1] = pow((double)(x->x_size>>1), power); //NY
+ for (i=2; i<x->x_size; i+=2) {
+ double freq = (double)(i>>1);
+ float amp = pow(freq, power);
+ x->x_window[i] = amp;
+ x->x_window[i+1] = amp;
+ }
+ }
+
+
+ /* default is no window */
+ else{
+ post("bwin~: unknown window type, using rectangular");
+ for (i=0; i<x->x_size; i++) x->x_window[i] = 1.0f;
+ }
+
+ x->x_type = s;
+ x->x_typearg = f;
+
+}
+
+static void window_dsp(t_window *x, t_signal **sp)
+{
+ int n = sp[0]->s_n;
+ if (x->x_size != n){
+ window_size(x, n);
+ window_type(x, x->x_type, x->x_typearg);
+ }
+
+ dsp_add(window_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, n);
+}
+
+static void window_free(t_window *x)
+{
+ free(x->x_window);
+}
+
+
+static void *window_new(t_symbol *s)
+{
+ t_window *x = (t_window *)pd_new(window_class);
+ outlet_new(&x->x_obj, &s_signal);
+ x->x_window = 0;
+ window_size(x, 64);
+ window_type(x, s, 0);
+ return (x);
+}
+
+void window_tilde_setup(void)
+{
+ window_class = class_new(gensym("bwin~"), (t_newmethod)window_new, (t_method)window_free,
+ sizeof(t_window), 0, A_DEFSYMBOL, A_NULL);
+ CLASS_MAINSIGNALIN(window_class, t_window, x_f);
+ class_addmethod(window_class, (t_method)window_dsp, gensym("dsp"), A_NULL);
+ class_addmethod(window_class, (t_method)window_type, gensym("type"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+}
+
Deleted: branches/pd-extended/v0-40/externals/creb/modules/window~.c
===================================================================
--- branches/pd-extended/v0-40/externals/creb/modules/window~.c 2008-05-24 23:14:15 UTC (rev 9899)
+++ branches/pd-extended/v0-40/externals/creb/modules/window~.c 2008-05-24 23:30:09 UTC (rev 9900)
@@ -1,168 +0,0 @@
-/*
- * window.c - window generation abstraction
- * Copyright (c) 2000-2003 by Tom Schouten
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include "m_pd.h"
-#include <math.h>
-#include <stdlib.h>
-
-
-static t_class *window_class;
-
-typedef struct _window
-{
- t_object x_obj;
- t_float x_f;
- t_float *x_window;
- t_int x_size;
- t_symbol *x_type;
- t_float x_typearg;
-
-} t_window;
-
-static t_int *window_perform(t_int *w)
-{
- t_window *x = (t_window *)(w[1]);
- t_float *in = (t_float *)(w[2]);
- t_float *out = (t_float *)(w[3]);
- t_float *window = x->x_window;
- int n = (int)(w[4]);
- while (n--)
- {
- *out++ = (*in++) * (*window++);
- }
- return (w+5);
-}
-
-static void window_size(t_window *x, t_int n)
-{
- if (x->x_size != n){
- if (x->x_window) free(x->x_window);
- x->x_window = malloc(sizeof(float)*n);
- x->x_size = n;
- }
-}
-
-
-static void window_type(t_window *x, t_symbol *s, t_float f)
-{
- int i;
- float a = 0;
- float a_inc = 2 * M_PI / (float)(x->x_size);
- if (!s) s = gensym("hamming");
- if (s == gensym("hamming")){
- for (i=0; i<x->x_size; i++){
- float c = cos(a);
- x->x_window[i] = (0.54 - 0.46 * c);
- a += a_inc;
- }
- }
- else if (s == gensym("hann")){
- for (i=0; i<x->x_size; i++){
- float c = cos(a);
- x->x_window[i] = (0.5 - 0.5 * c);
- a += a_inc;
- }
- }
- else if (s == gensym("hann/hamming")){
- for (i=0; i<x->x_size; i++) {
- float c = cos(a);
- x->x_window[i] = (0.5 - 0.5 * c) / (0.54 - 0.46 * c);
- a += a_inc;
- }
- }
- else if (s == gensym("bfft_pink")){
- x->x_window[0] = 1.0f; //DC
- x->x_window[1] = 1.0f / sqrt((double)(x->x_size>>1)); //NY
- for (i=2; i<x->x_size; i+=2) {
- double freq = (double)(i>>1);
- float amp = sqrt(1.0 / freq);
- x->x_window[i] = amp;
- x->x_window[i+1] = amp;
- }
- }
- else if (s == gensym("bfft_blue")){
- x->x_window[0] = 1.0f; //DC
- x->x_window[1] = sqrt((double)(x->x_size>>1)); //NY
- for (i=2; i<x->x_size; i+=2) {
- double freq = (double)(i>>1);
- float amp = sqrt(freq);
- x->x_window[i] = amp;
- x->x_window[i+1] = amp;
- }
- }
- else if (s == gensym("bfft_db/octave")){
- float power = f/6.0;
- x->x_window[0] = 1.0f; //DC
- x->x_window[1] = pow((double)(x->x_size>>1), power); //NY
- for (i=2; i<x->x_size; i+=2) {
- double freq = (double)(i>>1);
- float amp = pow(freq, power);
- x->x_window[i] = amp;
- x->x_window[i+1] = amp;
- }
- }
-
-
- /* default is no window */
- else{
- post("bwin~: unknown window type, using rectangular");
- for (i=0; i<x->x_size; i++) x->x_window[i] = 1.0f;
- }
-
- x->x_type = s;
- x->x_typearg = f;
-
-}
-
-static void window_dsp(t_window *x, t_signal **sp)
-{
- int n = sp[0]->s_n;
- if (x->x_size != n){
- window_size(x, n);
- window_type(x, x->x_type, x->x_typearg);
- }
-
- dsp_add(window_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, n);
-}
-
-static void window_free(t_window *x)
-{
- free(x->x_window);
-}
-
-
-static void *window_new(t_symbol *s)
-{
- t_window *x = (t_window *)pd_new(window_class);
- outlet_new(&x->x_obj, &s_signal);
- x->x_window = 0;
- window_size(x, 64);
- window_type(x, s, 0);
- return (x);
-}
-
-void window_tilde_setup(void)
-{
- window_class = class_new(gensym("bwin~"), (t_newmethod)window_new, (t_method)window_free,
- sizeof(t_window), 0, A_DEFSYMBOL, A_NULL);
- CLASS_MAINSIGNALIN(window_class, t_window, x_f);
- class_addmethod(window_class, (t_method)window_dsp, gensym("dsp"), A_NULL);
- class_addmethod(window_class, (t_method)window_type, gensym("type"), A_SYMBOL, A_DEFFLOAT, A_NULL);
-}
-
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