From 843409ecc7baf287962cbe34e967380302f35509 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?=
 <zmoelnig@users.sourceforge.net>
Date: Fri, 1 Jun 2007 09:15:09 +0000
Subject: new filelayout (one c-file per object)

svn path=/trunk/externals/iem16/; revision=7739
---
 src/tab16play~.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 src/tab16play~.c

(limited to 'src/tab16play~.c')

diff --git a/src/tab16play~.c b/src/tab16play~.c
new file mode 100644
index 0000000..23be427
--- /dev/null
+++ b/src/tab16play~.c
@@ -0,0 +1,112 @@
+/* copyleft (c) 2003 forum::für::umläute -- IOhannes m zmölnig @ IEM
+ * based on d_array.c from pd:
+ * Copyright (c) 1997-1999 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.  */
+
+/* tab16write~, tab16play~, tab16read~, tab16read4~, tab16send~, tab16receive~ */
+
+#include "iem16_table.h"
+
+
+/* ------------ tab16play~ - non-transposing sample playback --------------- */
+
+static t_class *tab16play_tilde_class;
+
+typedef struct _tab16play_tilde{
+  t_object x_obj;
+  t_outlet *x_bangout;
+  int x_phase;
+  int x_nsampsintab;
+  int x_limit;
+  t_iem16_16bit *x_vec;
+  t_symbol *x_arrayname;
+} t_tab16play_tilde;
+
+static void *tab16play_tilde_new(t_symbol *s){
+  t_tab16play_tilde *x = (t_tab16play_tilde *)pd_new(tab16play_tilde_class);
+  x->x_phase = 0x7fffffff;
+  x->x_limit = 0;
+  x->x_arrayname = s;
+  outlet_new(&x->x_obj, gensym("signal"));
+  x->x_bangout = outlet_new(&x->x_obj, gensym("bang"));
+  return (x);
+}
+
+static t_int *tab16play_tilde_perform(t_int *w){
+  t_tab16play_tilde *x = (t_tab16play_tilde *)(w[1]);
+  t_float *out = (t_float *)(w[2]);
+  t_iem16_16bit *fp;
+  int n = (int)(w[3]), phase = x->x_phase,
+    endphase = (x->x_nsampsintab < x->x_limit ?
+		x->x_nsampsintab : x->x_limit), nxfer, n3;
+  if (!x->x_vec || phase >= endphase)	goto zero;
+    
+  nxfer = endphase - phase;
+  fp = x->x_vec + phase;
+  if (nxfer > n)
+    nxfer = n;
+  n3 = n - nxfer;
+  phase += nxfer;
+  while (nxfer--) *out++ = *fp++*IEM16_SCALE_DOWN;
+  if (phase >= endphase)  {
+    x->x_phase = 0x7fffffff;
+    while (n3--) *out++ = 0;
+  }
+  else x->x_phase = phase;
+    
+  return (w+4);
+ zero:
+  while (n--) *out++ = 0;
+  return (w+4);
+}
+
+void tab16play_tilde_set(t_tab16play_tilde *x, t_symbol *s){
+  t_table16 *a;
+
+  x->x_arrayname = s;
+  if (!(a = (t_table16 *)pd_findbyclass(x->x_arrayname, table16_class)))    {
+    if (*s->s_name) pd_error(x, "tab16play~: %s: no such array",
+			     x->x_arrayname->s_name);
+    x->x_vec = 0;
+  }
+  else if (!table16_getarray16(a, &x->x_nsampsintab, &x->x_vec))    {
+    error("%s: bad template for tab16play~", x->x_arrayname->s_name);
+    x->x_vec = 0;
+  }
+  else table16_usedindsp(a);
+}
+
+static void tab16play_tilde_dsp(t_tab16play_tilde *x, t_signal **sp){
+  tab16play_tilde_set(x, x->x_arrayname);
+  dsp_add(tab16play_tilde_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
+}
+
+static void tab16play_tilde_list(t_tab16play_tilde *x, t_symbol *s,
+				 int argc, t_atom *argv){
+  long start = atom_getfloatarg(0, argc, argv);
+  long length = atom_getfloatarg(1, argc, argv);
+  if (start < 0) start = 0;
+  if (length <= 0)x->x_limit = 0x7fffffff;
+  else	    x->x_limit = start + length;
+  x->x_phase = start;
+}
+
+static void tab16play_tilde_stop(t_tab16play_tilde *x){
+  x->x_phase = 0x7fffffff;
+}
+
+static void tab16play_tilde_free(t_tab16play_tilde *x){}
+
+void tab16play_tilde_setup(void){
+  tab16play_tilde_class = class_new(gensym("tab16play~"),
+				    (t_newmethod)tab16play_tilde_new, (t_method)tab16play_tilde_free,
+				    sizeof(t_tab16play_tilde), 0, A_DEFSYM, 0);
+  class_addmethod(tab16play_tilde_class, (t_method)tab16play_tilde_dsp,
+		  gensym("dsp"), 0);
+  class_addmethod(tab16play_tilde_class, (t_method)tab16play_tilde_stop,
+		  gensym("stop"), 0);
+  class_addmethod(tab16play_tilde_class, (t_method)tab16play_tilde_set,
+		  gensym("set"), A_DEFSYM, 0);
+  class_addlist(tab16play_tilde_class, tab16play_tilde_list);
+}
-- 
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