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, 264 insertions, 0 deletions

diff --git a/apps/plugins/pdbox/PDa/intern/tabosc4~.c b/apps/plugins/pdbox/PDa/intern/tabosc4~.c
new file mode 100644
index 0000000000..ec8ed84f31
--- /dev/null
+++ b/apps/plugins/pdbox/PDa/intern/tabosc4~.c
@@ -0,0 +1,264 @@
+
+#include <m_pd.h>
+#include <m_fixed.h>
+
+static t_class *tabosc4_tilde_class;
+
+typedef struct _tabosc4_tilde
+{
+    t_object x_obj;
+    int x_fnpoints;
+    int x_lognpoints;
+    t_sample *x_vec;
+    t_symbol *x_arrayname;
+    t_sample x_f;
+    unsigned int x_phase;
+    t_sample x_conv;
+} t_tabosc4_tilde;
+
+static void *tabosc4_tilde_new(t_symbol *s)
+{
+    t_tabosc4_tilde *x = (t_tabosc4_tilde *)pd_new(tabosc4_tilde_class);
+    x->x_arrayname = s;
+    x->x_vec = 0;
+    x->x_fnpoints = 512;
+    outlet_new(&x->x_obj, gensym("signal"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+    x->x_f = 0;
+    post("new done");
+    return (x);
+}
+
+static t_int *tabosc4_tilde_perform(t_int *w)
+{
+    t_tabosc4_tilde *x = (t_tabosc4_tilde *)(w[1]);
+    t_sample *in = (t_sample *)(w[2]);
+    t_sample *out = (t_sample *)(w[3]);
+    int n = (int)(w[4]);
+    t_sample *tab = x->x_vec;
+    unsigned int phase = x->x_phase;
+    int conv = x->x_conv;
+    int off;
+    int frac;
+    int logp = x->x_lognpoints;
+
+    if (!tab) goto zero;
+
+    while (n--) {
+        t_sample f2;
+         phase+= mult(conv ,(*in++));
+         phase &= (itofix(1) -1);
+         off =  fixtoi((long long)phase<<logp);
+
+#ifdef NO_INTERPOLATION
+         *out = *(tab+off);
+#else
+         frac = phase & ((1<<logp)-1);
+         frac <<= (fix1-logp);
+         
+         f2 = (off == x->x_fnpoints) ? 
+             mult(*(tab),frac) :
+             mult(*(tab + off + 1),frac);
+
+         *out = mult(*(tab + off),(itofix(1) - frac)) + f2;
+#endif
+         out++;
+    }
+    x->x_phase = phase;
+
+    return (w+5);
+
+zero:
+    while (n--) *out++ = 0;
+
+    return (w+5);
+}
+
+void tabosc4_tilde_set(t_tabosc4_tilde *x, t_symbol *s)
+{
+    t_garray *a;
+    int npoints, pointsinarray;
+    x->x_arrayname = s;
+
+    if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
+    {
+        if (*s->s_name)
+            pd_error(x, "tabosc4~: %s: no such array", x->x_arrayname->s_name);
+        x->x_vec = 0;
+    }
+    else if (!garray_getfloatarray(a, &pointsinarray, &x->x_vec))
+    {
+        pd_error(x, "%s: bad template for tabosc4~", x->x_arrayname->s_name);
+        x->x_vec = 0;
+    }
+    else
+    {
+        int i;
+        x->x_fnpoints = pointsinarray;
+        x->x_lognpoints = ilog2(pointsinarray);
+        post("tabosc~: using %d (log %d) points of array",x->x_fnpoints,x->x_lognpoints);
+
+        garray_usedindsp(a);
+    }
+}
+
+static void tabosc4_tilde_ft1(t_tabosc4_tilde *x, t_float f)
+{
+    x->x_phase = f;
+}
+
+static void tabosc4_tilde_dsp(t_tabosc4_tilde *x, t_signal **sp)
+{
+    x->x_conv = ftofix(1000.)/sp[0]->s_sr;
+    x->x_conv = mult(x->x_conv + 500,ftofix(0.001));
+
+    tabosc4_tilde_set(x, x->x_arrayname);
+    dsp_add(tabosc4_tilde_perform, 4, x,
+        sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+void tabosc4_tilde_setup(void)
+{
+    tabosc4_tilde_class = class_new(gensym("tabosc4~"),
+        (t_newmethod)tabosc4_tilde_new, 0,
+        sizeof(t_tabosc4_tilde), 0, A_DEFSYM, 0);
+    CLASS_MAINSIGNALIN(tabosc4_tilde_class, t_tabosc4_tilde, x_f);
+    class_addmethod(tabosc4_tilde_class, (t_method)tabosc4_tilde_dsp,
+        gensym("dsp"), 0);
+    class_addmethod(tabosc4_tilde_class, (t_method)tabosc4_tilde_set,
+        gensym("set"), A_SYMBOL, 0);
+    class_addmethod(tabosc4_tilde_class, (t_method)tabosc4_tilde_ft1,
+        gensym("ft1"), A_FLOAT, 0);
+}
+
+#include <m_pd.h>
+#include <m_fixed.h>
+
+static t_class *tabosc4_tilde_class;
+
+typedef struct _tabosc4_tilde
+{
+    t_object x_obj;
+    int x_fnpoints;
+    int x_lognpoints;
+    t_sample *x_vec;
+    t_symbol *x_arrayname;
+    t_sample x_f;
+    unsigned int x_phase;
+    t_sample x_conv;
+} t_tabosc4_tilde;
+
+static void *tabosc4_tilde_new(t_symbol *s)
+{
+    t_tabosc4_tilde *x = (t_tabosc4_tilde *)pd_new(tabosc4_tilde_class);
+    x->x_arrayname = s;
+    x->x_vec = 0;
+    x->x_fnpoints = 512;
+    outlet_new(&x->x_obj, gensym("signal"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+    x->x_f = 0;
+    post("new done");
+    return (x);
+}
+
+static t_int *tabosc4_tilde_perform(t_int *w)
+{
+    t_tabosc4_tilde *x = (t_tabosc4_tilde *)(w[1]);
+    t_sample *in = (t_sample *)(w[2]);
+    t_sample *out = (t_sample *)(w[3]);
+    int n = (int)(w[4]);
+    t_sample *tab = x->x_vec;
+    unsigned int phase = x->x_phase;
+    int conv = x->x_conv;
+    int off;
+    int frac;
+    int logp = x->x_lognpoints;
+
+    if (!tab) goto zero;
+
+    while (n--) {
+        t_sample f2;
+         phase+= mult(conv ,(*in++));
+         phase &= (itofix(1) -1);
+         off =  fixtoi((long long)phase<<logp);
+
+#ifdef NO_INTERPOLATION
+         *out = *(tab+off);
+#else
+         frac = phase & ((1<<logp)-1);
+         frac <<= (fix1-logp);
+         
+         f2 = (off == x->x_fnpoints) ? 
+             mult(*(tab),frac) :
+             mult(*(tab + off + 1),frac);
+
+         *out = mult(*(tab + off),(itofix(1) - frac)) + f2;
+#endif
+         out++;
+    }
+    x->x_phase = phase;
+
+    return (w+5);
+
+zero:
+    while (n--) *out++ = 0;
+
+    return (w+5);
+}
+
+void tabosc4_tilde_set(t_tabosc4_tilde *x, t_symbol *s)
+{
+    t_garray *a;
+    int npoints, pointsinarray;
+    x->x_arrayname = s;
+
+    if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
+    {
+        if (*s->s_name)
+            pd_error(x, "tabosc4~: %s: no such array", x->x_arrayname->s_name);
+        x->x_vec = 0;
+    }
+    else if (!garray_getfloatarray(a, &pointsinarray, &x->x_vec))
+    {
+        pd_error(x, "%s: bad template for tabosc4~", x->x_arrayname->s_name);
+        x->x_vec = 0;
+    }
+    else
+    {
+        int i;
+        x->x_fnpoints = pointsinarray;
+        x->x_lognpoints = ilog2(pointsinarray);
+        post("tabosc~: using %d (log %d) points of array",x->x_fnpoints,x->x_lognpoints);
+
+        garray_usedindsp(a);
+    }
+}
+
+static void tabosc4_tilde_ft1(t_tabosc4_tilde *x, t_float f)
+{
+    x->x_phase = f;
+}
+
+static void tabosc4_tilde_dsp(t_tabosc4_tilde *x, t_signal **sp)
+{
+    x->x_conv = ftofix(1000.)/sp[0]->s_sr;
+    x->x_conv = mult(x->x_conv + 500,ftofix(0.001));
+
+    tabosc4_tilde_set(x, x->x_arrayname);
+    dsp_add(tabosc4_tilde_perform, 4, x,
+        sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+void tabosc4_tilde_setup(void)
+{
+    tabosc4_tilde_class = class_new(gensym("tabosc4~"),
+        (t_newmethod)tabosc4_tilde_new, 0,
+        sizeof(t_tabosc4_tilde), 0, A_DEFSYM, 0);
+    CLASS_MAINSIGNALIN(tabosc4_tilde_class, t_tabosc4_tilde, x_f);
+    class_addmethod(tabosc4_tilde_class, (t_method)tabosc4_tilde_dsp,
+        gensym("dsp"), 0);
+    class_addmethod(tabosc4_tilde_class, (t_method)tabosc4_tilde_set,
+        gensym("set"), A_SYMBOL, 0);
+    class_addmethod(tabosc4_tilde_class, (t_method)tabosc4_tilde_ft1,
+        gensym("ft1"), A_FLOAT, 0);
+}