refactored x_midi.c into individual objects, and split out inmidi_* functions to e_midi.c in pd-extended.git

svn path=/trunk/; revision=15037

1 files changed, 110 insertions, 0 deletions

diff --git a/externals/vanilla/makenote.c b/externals/vanilla/makenote.c
new file mode 100644
index 00000000..cee6ffae
--- /dev/null
+++ b/externals/vanilla/makenote.c
@@ -0,0 +1,110 @@
+/* Copyright (c) 1997-2001 Miller Puckette and others.
+* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */
+
+/* MIDI. */
+
+#include "m_pd.h"
+
+static t_class *makenote_class;
+
+typedef struct _hang
+{
+    t_clock *h_clock;
+    struct _hang *h_next;
+    t_float h_pitch;
+    struct _makenote *h_owner;
+} t_hang;
+
+typedef struct _makenote
+{
+    t_object x_obj;
+    t_float x_velo;
+    t_float x_dur;
+    t_outlet *x_pitchout;
+    t_outlet *x_velout;
+    t_hang *x_hang;
+} t_makenote;
+
+static void *makenote_new(t_floatarg velo, t_floatarg dur)
+{
+    t_makenote *x = (t_makenote *)pd_new(makenote_class);
+    x->x_velo = velo;
+    x->x_dur = dur;
+    floatinlet_new(&x->x_obj, &x->x_velo);
+    floatinlet_new(&x->x_obj, &x->x_dur);
+    x->x_pitchout = outlet_new(&x->x_obj, &s_float);
+    x->x_velout = outlet_new(&x->x_obj, &s_float);
+    x->x_hang = 0;
+    return (x);
+}
+
+static void makenote_tick(t_hang *hang)
+{
+    t_makenote *x = hang->h_owner;
+    t_hang *h2, *h3;
+    outlet_float(x->x_velout, 0);
+    outlet_float(x->x_pitchout, hang->h_pitch);
+    if (x->x_hang == hang) x->x_hang = hang->h_next;
+    else for (h2 = x->x_hang; h3 = h2->h_next; h2 = h3)
+    {
+        if (h3 == hang)
+        {
+            h2->h_next = h3->h_next;
+            break;
+        }
+    }
+    clock_free(hang->h_clock);
+    freebytes(hang, sizeof(*hang));
+}
+
+static void makenote_float(t_makenote *x, t_float f)
+{
+    t_hang *hang;
+    if (!x->x_velo) return;
+    outlet_float(x->x_velout, x->x_velo);
+    outlet_float(x->x_pitchout, f);
+    hang = (t_hang *)getbytes(sizeof *hang);
+    hang->h_next = x->x_hang;
+    x->x_hang = hang;
+    hang->h_pitch = f;
+    hang->h_owner = x;
+    hang->h_clock = clock_new(hang, (t_method)makenote_tick);
+    clock_delay(hang->h_clock, (x->x_dur >= 0 ? x->x_dur : 0));
+}
+
+static void makenote_stop(t_makenote *x)
+{
+    t_hang *hang;
+    while (hang = x->x_hang)
+    {
+        outlet_float(x->x_velout, 0);
+        outlet_float(x->x_pitchout, hang->h_pitch);
+        x->x_hang = hang->h_next;
+        clock_free(hang->h_clock);
+        freebytes(hang, sizeof(*hang));
+    }
+}
+
+static void makenote_clear(t_makenote *x)
+{
+    t_hang *hang;
+    while (hang = x->x_hang)
+    {
+        x->x_hang = hang->h_next;
+        clock_free(hang->h_clock);
+        freebytes(hang, sizeof(*hang));
+    }
+}
+
+void makenote_setup(void)
+{
+    makenote_class = class_new(gensym("makenote"), 
+        (t_newmethod)makenote_new, (t_method)makenote_clear,
+        sizeof(t_makenote), 0, A_DEFFLOAT, A_DEFFLOAT, 0);
+    class_addfloat(makenote_class, makenote_float);
+    class_addmethod(makenote_class, (t_method)makenote_stop, gensym("stop"),
+        0);
+    class_addmethod(makenote_class, (t_method)makenote_clear, gensym("clear"),
+        0);
+}