Add FS #10214. Initial commit of the original PDa code for the GSoC Pure Data plugin project of Wincent Balin. Stripped some non-sourcefiles and added a rockbox readme that needs a bit more info from Wincent. Is added to CATEGORIES and viewers, but not yet to SUBDIRS (ie doesn't build yet)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21044 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 106 insertions, 0 deletions

diff --git a/apps/plugins/pdbox/PDa/intern/powtodb~.c b/apps/plugins/pdbox/PDa/intern/powtodb~.c
new file mode 100644
index 0000000000..65cf6c0c36
--- /dev/null
+++ b/apps/plugins/pdbox/PDa/intern/powtodb~.c
@@ -0,0 +1,106 @@
+#include <m_pd.h>
+#include <m_fixed.h>
+
+#define LOGTEN 2.302585092994
+
+
+typedef struct powtodb_tilde
+{
+    t_object x_obj;
+    float x_f;
+} t_powtodb_tilde;
+
+t_class *powtodb_tilde_class;
+
+static void *powtodb_tilde_new(void)
+{
+    t_powtodb_tilde *x = (t_powtodb_tilde *)pd_new(powtodb_tilde_class);
+    outlet_new(&x->x_obj, gensym("signal"));
+    x->x_f = 0;
+    return (x);
+}
+
+static t_int *powtodb_tilde_perform(t_int *w)
+{
+    t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2);
+    t_int n = *(t_int *)(w+3);
+    for (; n--; in++, out++)
+    {
+        float f = *in;
+        if (f <= 0) *out = 0;
+        else
+        {
+            float g = 100 + 10./LOGTEN * log(f);
+            *out = (g < 0 ? 0 : g);
+        }
+    }
+    return (w + 4);
+}
+
+static void powtodb_tilde_dsp(t_powtodb_tilde *x, t_signal **sp)
+{
+    post("warning: %s not usable yet",__FUNCTION__);
+    dsp_add(powtodb_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+void powtodb_tilde_setup(void)
+{
+    powtodb_tilde_class = class_new(gensym("powtodb~"), (t_newmethod)powtodb_tilde_new, 0,
+        sizeof(t_powtodb_tilde), 0, 0);
+    CLASS_MAINSIGNALIN(powtodb_tilde_class, t_powtodb_tilde, x_f);
+    class_addmethod(powtodb_tilde_class, (t_method)powtodb_tilde_dsp, gensym("dsp"), 0);
+}
+
+#include <m_pd.h>
+#include <m_fixed.h>
+
+#define LOGTEN 2.302585092994
+
+
+typedef struct powtodb_tilde
+{
+    t_object x_obj;
+    float x_f;
+} t_powtodb_tilde;
+
+t_class *powtodb_tilde_class;
+
+static void *powtodb_tilde_new(void)
+{
+    t_powtodb_tilde *x = (t_powtodb_tilde *)pd_new(powtodb_tilde_class);
+    outlet_new(&x->x_obj, gensym("signal"));
+    x->x_f = 0;
+    return (x);
+}
+
+static t_int *powtodb_tilde_perform(t_int *w)
+{
+    t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2);
+    t_int n = *(t_int *)(w+3);
+    for (; n--; in++, out++)
+    {
+        float f = *in;
+        if (f <= 0) *out = 0;
+        else
+        {
+            float g = 100 + 10./LOGTEN * log(f);
+            *out = (g < 0 ? 0 : g);
+        }
+    }
+    return (w + 4);
+}
+
+static void powtodb_tilde_dsp(t_powtodb_tilde *x, t_signal **sp)
+{
+    post("warning: %s not usable yet",__FUNCTION__);
+    dsp_add(powtodb_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+void powtodb_tilde_setup(void)
+{
+    powtodb_tilde_class = class_new(gensym("powtodb~"), (t_newmethod)powtodb_tilde_new, 0,
+        sizeof(t_powtodb_tilde), 0, 0);
+    CLASS_MAINSIGNALIN(powtodb_tilde_class, t_powtodb_tilde, x_f);
+    class_addmethod(powtodb_tilde_class, (t_method)powtodb_tilde_dsp, gensym("dsp"), 0);
+}
+