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, 200 insertions, 0 deletions

diff --git a/apps/plugins/pdbox/PDa/intern/delread~.c b/apps/plugins/pdbox/PDa/intern/delread~.c
new file mode 100644
index 0000000000..b0a58393be
--- /dev/null
+++ b/apps/plugins/pdbox/PDa/intern/delread~.c
@@ -0,0 +1,200 @@
+#include <m_pd.h>
+#include <m_fixed.h>
+#include "delay.h"
+
+extern int ugen_getsortno(void);
+
+#define DEFDELVS 64             /* LATER get this from canvas at DSP time */
+static int delread_zero = 0;    /* four bytes of zero for delread~, vd~ */
+
+static t_class *sigdelread_class;
+
+typedef struct _sigdelread
+{
+    t_object x_obj;
+    t_symbol *x_sym;
+    t_float x_deltime;  /* delay in msec */
+    int x_delsamps;     /* delay in samples */
+    t_float x_sr;       /* samples per msec */
+    t_float x_n;        /* vector size */
+    int x_zerodel;      /* 0 or vecsize depending on read/write order */
+} t_sigdelread;
+
+static void sigdelread_float(t_sigdelread *x, t_float f);
+
+static void *sigdelread_new(t_symbol *s, t_floatarg f)
+{
+    t_sigdelread *x = (t_sigdelread *)pd_new(sigdelread_class);
+    x->x_sym = s;
+    x->x_sr = 1;
+    x->x_n = 1;
+    x->x_zerodel = 0;
+    sigdelread_float(x, f);
+    outlet_new(&x->x_obj, &s_signal);
+    return (x);
+}
+
+static void sigdelread_float(t_sigdelread *x, t_float f)
+{
+    int samps;
+    t_sigdelwrite *delwriter =
+        (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
+    x->x_deltime = f;
+    if (delwriter)
+    {
+        int delsize = delwriter->x_cspace.c_n;
+        x->x_delsamps = (int)(0.5 + x->x_sr * x->x_deltime)
+            + x->x_n - x->x_zerodel;
+        if (x->x_delsamps < x->x_n) x->x_delsamps = x->x_n;
+        else if (x->x_delsamps > delwriter->x_cspace.c_n - DEFDELVS)
+            x->x_delsamps = delwriter->x_cspace.c_n - DEFDELVS;
+    }
+}
+
+static t_int *sigdelread_perform(t_int *w)
+{
+    t_sample *out = (t_sample *)(w[1]);
+    t_delwritectl *c = (t_delwritectl *)(w[2]);
+    int delsamps = *(int *)(w[3]);
+    int n = (int)(w[4]);
+    int phase = c->c_phase - delsamps, nsamps = c->c_n;
+    t_sample *vp = c->c_vec, *bp, *ep = vp + (c->c_n + XTRASAMPS);
+
+    if (phase < 0) phase += nsamps;
+    bp = vp + phase;
+    while (n--)
+    {
+        *out++ = *bp++;
+        if (bp == ep) bp -= nsamps;
+    }
+    return (w+5);
+}
+
+static void sigdelread_dsp(t_sigdelread *x, t_signal **sp)
+{
+    t_sigdelwrite *delwriter =
+        (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
+    x->x_sr = sp[0]->s_sr * 0.001;
+    x->x_n = sp[0]->s_n;
+    if (delwriter)
+    {
+        sigdelwrite_checkvecsize(delwriter, sp[0]->s_n);
+        x->x_zerodel = (delwriter->x_sortno == ugen_getsortno() ?
+            0 : delwriter->x_vecsize);
+        sigdelread_float(x, x->x_deltime);
+        dsp_add(sigdelread_perform, 4,
+            sp[0]->s_vec, &delwriter->x_cspace, &x->x_delsamps, sp[0]->s_n);
+    }
+    else if (*x->x_sym->s_name)
+        error("delread~: %s: no such delwrite~",x->x_sym->s_name);
+}
+
+void delread_tilde_setup(void)
+{
+    sigdelread_class = class_new(gensym("delread~"),
+        (t_newmethod)sigdelread_new, 0,
+        sizeof(t_sigdelread), 0, A_DEFSYM, A_DEFFLOAT, 0);
+    class_addmethod(sigdelread_class, (t_method)sigdelread_dsp,
+        gensym("dsp"), 0);
+    class_addfloat(sigdelread_class, (t_method)sigdelread_float);
+}
+#include <m_pd.h>
+#include <m_fixed.h>
+#include "delay.h"
+
+extern int ugen_getsortno(void);
+
+#define DEFDELVS 64             /* LATER get this from canvas at DSP time */
+static int delread_zero = 0;    /* four bytes of zero for delread~, vd~ */
+
+static t_class *sigdelread_class;
+
+typedef struct _sigdelread
+{
+    t_object x_obj;
+    t_symbol *x_sym;
+    t_float x_deltime;  /* delay in msec */
+    int x_delsamps;     /* delay in samples */
+    t_float x_sr;       /* samples per msec */
+    t_float x_n;        /* vector size */
+    int x_zerodel;      /* 0 or vecsize depending on read/write order */
+} t_sigdelread;
+
+static void sigdelread_float(t_sigdelread *x, t_float f);
+
+static void *sigdelread_new(t_symbol *s, t_floatarg f)
+{
+    t_sigdelread *x = (t_sigdelread *)pd_new(sigdelread_class);
+    x->x_sym = s;
+    x->x_sr = 1;
+    x->x_n = 1;
+    x->x_zerodel = 0;
+    sigdelread_float(x, f);
+    outlet_new(&x->x_obj, &s_signal);
+    return (x);
+}
+
+static void sigdelread_float(t_sigdelread *x, t_float f)
+{
+    int samps;
+    t_sigdelwrite *delwriter =
+        (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
+    x->x_deltime = f;
+    if (delwriter)
+    {
+        int delsize = delwriter->x_cspace.c_n;
+        x->x_delsamps = (int)(0.5 + x->x_sr * x->x_deltime)
+            + x->x_n - x->x_zerodel;
+        if (x->x_delsamps < x->x_n) x->x_delsamps = x->x_n;
+        else if (x->x_delsamps > delwriter->x_cspace.c_n - DEFDELVS)
+            x->x_delsamps = delwriter->x_cspace.c_n - DEFDELVS;
+    }
+}
+
+static t_int *sigdelread_perform(t_int *w)
+{
+    t_sample *out = (t_sample *)(w[1]);
+    t_delwritectl *c = (t_delwritectl *)(w[2]);
+    int delsamps = *(int *)(w[3]);
+    int n = (int)(w[4]);
+    int phase = c->c_phase - delsamps, nsamps = c->c_n;
+    t_sample *vp = c->c_vec, *bp, *ep = vp + (c->c_n + XTRASAMPS);
+
+    if (phase < 0) phase += nsamps;
+    bp = vp + phase;
+    while (n--)
+    {
+        *out++ = *bp++;
+        if (bp == ep) bp -= nsamps;
+    }
+    return (w+5);
+}
+
+static void sigdelread_dsp(t_sigdelread *x, t_signal **sp)
+{
+    t_sigdelwrite *delwriter =
+        (t_sigdelwrite *)pd_findbyclass(x->x_sym, sigdelwrite_class);
+    x->x_sr = sp[0]->s_sr * 0.001;
+    x->x_n = sp[0]->s_n;
+    if (delwriter)
+    {
+        sigdelwrite_checkvecsize(delwriter, sp[0]->s_n);
+        x->x_zerodel = (delwriter->x_sortno == ugen_getsortno() ?
+            0 : delwriter->x_vecsize);
+        sigdelread_float(x, x->x_deltime);
+        dsp_add(sigdelread_perform, 4,
+            sp[0]->s_vec, &delwriter->x_cspace, &x->x_delsamps, sp[0]->s_n);
+    }
+    else if (*x->x_sym->s_name)
+        error("delread~: %s: no such delwrite~",x->x_sym->s_name);
+}
+
+void delread_tilde_setup(void)
+{
+    sigdelread_class = class_new(gensym("delread~"),
+        (t_newmethod)sigdelread_new, 0,
+        sizeof(t_sigdelread), 0, A_DEFSYM, A_DEFFLOAT, 0);
+    class_addmethod(sigdelread_class, (t_method)sigdelread_dsp,
+        gensym("dsp"), 0);
+    class_addfloat(sigdelread_class, (t_method)sigdelread_float);
+}