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, 174 insertions, 0 deletions

diff --git a/apps/plugins/pdbox/PDa/intern/osc~.c b/apps/plugins/pdbox/PDa/intern/osc~.c
new file mode 100644
index 0000000..f8e8997
--- /dev/null
+++ b/apps/plugins/pdbox/PDa/intern/osc~.c
@@ -0,0 +1,174 @@
+
+
+#include <m_pd.h>
+#include <m_fixed.h>
+#include "cos_table.h"
+
+/* ------------------------ osc~ ----------------------------- */
+
+static t_class *osc_class, *scalarosc_class;
+
+typedef struct _osc
+{
+    t_object x_obj;
+    unsigned int x_phase;
+    t_sample x_conv;
+    t_sample x_f;	    /* frequency if scalar */
+} t_osc;
+
+static void *osc_new(t_floatarg f)
+{
+    t_osc *x = (t_osc *)pd_new(osc_class);
+    x->x_f = ftofix(f);
+    outlet_new(&x->x_obj, gensym("signal"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+    x->x_phase = 0;
+    x->x_conv = 0;
+    return (x);
+}
+
+
+static t_int *osc_perform(t_int *w)
+{
+    t_osc *x = (t_osc *)(w[1]);
+    t_sample *in = (t_sample *)(w[2]);
+    t_sample *out = (t_sample *)(w[3]);
+    int n = (int)(w[4]);
+    t_sample *tab = cos_table;
+    unsigned int phase = x->x_phase;
+    int conv = x->x_conv;
+    int off;
+    int frac;
+    while (n--) {
+	 phase+= mult(conv ,(*in++));
+	 phase &= (itofix(1) -1);
+	 off =  fixtoi((long long)phase<<ILOGCOSTABSIZE);
+
+#ifdef NO_INTERPOLATION
+	 *out = *(tab+off);
+#else
+//	 frac = phase & (itofix(1)-1);
+	 frac = phase & ((1<<ILOGCOSTABSIZE)-1);
+         frac <<= (fix1-ILOGCOSTABSIZE);
+	 *out = mult(*(tab + off),(itofix(1) - frac)) + 
+	      mult(*(tab + off + 1),frac);	 
+#endif
+	 out++;
+    }
+    x->x_phase = phase;
+
+    return (w+5);
+}
+
+static void osc_dsp(t_osc *x, t_signal **sp)
+{
+	post("samplerate %f",sp[0]->s_sr);
+    x->x_conv = ftofix(1000.)/sp[0]->s_sr;
+     post("conf %d",x->x_conv);
+    x->x_conv = mult(x->x_conv + 500,ftofix(0.001));
+     post("conf %d",x->x_conv);
+    dsp_add(osc_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+static void osc_ft1(t_osc *x, t_float f)
+{
+     x->x_phase = ftofix(f); /* *2 ??? */
+}
+
+void osc_tilde_setup(void)
+{    
+    osc_class = class_new(gensym("osc~"), (t_newmethod)osc_new, 0,
+    	sizeof(t_osc), 0, A_DEFFLOAT, 0);
+    CLASS_MAINSIGNALIN(osc_class, t_osc, x_f);
+    class_addmethod(osc_class, (t_method)osc_dsp, gensym("dsp"), 0);
+    class_addmethod(osc_class, (t_method)osc_ft1, gensym("ft1"), A_FLOAT, 0);
+}
+
+
+
+
+#include <m_pd.h>
+#include <m_fixed.h>
+#include "cos_table.h"
+
+/* ------------------------ osc~ ----------------------------- */
+
+static t_class *osc_class, *scalarosc_class;
+
+typedef struct _osc
+{
+    t_object x_obj;
+    unsigned int x_phase;
+    t_sample x_conv;
+    t_sample x_f;	    /* frequency if scalar */
+} t_osc;
+
+static void *osc_new(t_floatarg f)
+{
+    t_osc *x = (t_osc *)pd_new(osc_class);
+    x->x_f = ftofix(f);
+    outlet_new(&x->x_obj, gensym("signal"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
+    x->x_phase = 0;
+    x->x_conv = 0;
+    return (x);
+}
+
+
+static t_int *osc_perform(t_int *w)
+{
+    t_osc *x = (t_osc *)(w[1]);
+    t_sample *in = (t_sample *)(w[2]);
+    t_sample *out = (t_sample *)(w[3]);
+    int n = (int)(w[4]);
+    t_sample *tab = cos_table;
+    unsigned int phase = x->x_phase;
+    int conv = x->x_conv;
+    int off;
+    int frac;
+    while (n--) {
+	 phase+= mult(conv ,(*in++));
+	 phase &= (itofix(1) -1);
+	 off =  fixtoi((long long)phase<<ILOGCOSTABSIZE);
+
+#ifdef NO_INTERPOLATION
+	 *out = *(tab+off);
+#else
+//	 frac = phase & (itofix(1)-1);
+	 frac = phase & ((1<<ILOGCOSTABSIZE)-1);
+         frac <<= (fix1-ILOGCOSTABSIZE);
+	 *out = mult(*(tab + off),(itofix(1) - frac)) + 
+	      mult(*(tab + off + 1),frac);	 
+#endif
+	 out++;
+    }
+    x->x_phase = phase;
+
+    return (w+5);
+}
+
+static void osc_dsp(t_osc *x, t_signal **sp)
+{
+	post("samplerate %f",sp[0]->s_sr);
+    x->x_conv = ftofix(1000.)/sp[0]->s_sr;
+     post("conf %d",x->x_conv);
+    x->x_conv = mult(x->x_conv + 500,ftofix(0.001));
+     post("conf %d",x->x_conv);
+    dsp_add(osc_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
+}
+
+static void osc_ft1(t_osc *x, t_float f)
+{
+     x->x_phase = ftofix(f); /* *2 ??? */
+}
+
+void osc_tilde_setup(void)
+{    
+    osc_class = class_new(gensym("osc~"), (t_newmethod)osc_new, 0,
+    	sizeof(t_osc), 0, A_DEFFLOAT, 0);
+    CLASS_MAINSIGNALIN(osc_class, t_osc, x_f);
+    class_addmethod(osc_class, (t_method)osc_dsp, gensym("dsp"), 0);
+    class_addmethod(osc_class, (t_method)osc_ft1, gensym("ft1"), A_FLOAT, 0);
+}
+
+