new filelayout (one c-file per object)

svn path=/trunk/externals/iem16/; revision=7739

1 files changed, 234 insertions, 0 deletions

diff --git a/src/table16.c b/src/table16.c
new file mode 100644
index 0000000..fd9d585
--- /dev/null
+++ b/src/table16.c
@@ -0,0 +1,234 @@
+/* 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.  */
+
+/* sampling */
+
+#include "iem16_table.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>      /* for read/write to files */
+
+#if (defined(_MSC_VER) && (_MSC_VER > 600))
+# define fdopen(fd,type) _fdopen(fd,type)
+#endif
+
+
+static int am_bigendian(void){
+    /* actually this should be in m_pd.h */
+    unsigned short s = 1;
+    unsigned char c = *(char *)(&s);
+    return (c==0);
+}
+
+
+static void table16_const(t_table16*x, t_float f);
+
+static void *table16_new(t_symbol *s, t_float f){
+  t_table16 *x = (t_table16*)pd_new(table16_class);
+  int i=f;
+  if(i<1)i=100;
+  x->x_tablename=s;
+  x->x_size=i;
+  x->x_table=getbytes(x->x_size*sizeof(t_iem16_16bit));
+  x->x_usedindsp=0;
+  pd_bind(&x->x_obj.ob_pd, x->x_tablename);
+  x->x_canvas = canvas_getcurrent();
+
+  table16_const(x, 0);
+  return(x);
+}
+
+static void table16_free(t_table16 *x){
+  if(x->x_table)freebytes(x->x_table, x->x_size*sizeof(t_iem16_16bit));
+  pd_unbind(&x->x_obj.ob_pd, x->x_tablename);
+}
+
+int table16_getarray16(t_table16*x, int*size,t_iem16_16bit**vec){
+  *size=x->x_size;
+  *vec =x->x_table;
+  return 1;
+}
+void table16_usedindsp(t_table16*x){
+  x->x_usedindsp=1;
+}
+static void table16_resize(t_table16*x, t_float f){
+  int i=f;
+  int was=x->x_size;
+  if (i<1){
+    error("can only resize to sizes >0");
+    return;
+  }
+  x->x_table=resizebytes(x->x_table, was*sizeof(t_iem16_16bit), i*sizeof(t_iem16_16bit));
+  if(i>was)memset(x->x_table+was, 0, (i-was)*sizeof(t_iem16_16bit));
+  x->x_size  =i;
+  if (x->x_usedindsp) canvas_update_dsp();
+}
+
+static void table16_const(t_table16*x, t_float f){
+  t_iem16_16bit s = (t_iem16_16bit)f;
+  int i = x->x_size;
+  t_iem16_16bit*buf=x->x_table;
+  while(i--)*buf++=s;
+}
+
+
+static void table16_from(t_table16*x, t_symbol*s, int argc, t_atom*argv){
+  float scale=IEM16_SCALE_UP;
+  int resize=0;
+  int startfrom=0, startto=0, endfrom=0, endto=x->x_size;
+  t_garray *a=0;
+  int npoints;
+  t_float *vec=(0), *src=(0);
+  t_iem16_16bit   *dest;
+
+  int i,length=0;
+
+  if(argc<1 || argv->a_type!=A_SYMBOL){
+    error("you have to specify the from-table !");
+    return;
+  }
+  s=atom_getsymbol(argv);  argc--;argv++;
+#if defined __WIN32__ || defined __WIN32
+  // hmm, how do i import garray_class on w32??
+  error("ack, windows hit the wall...tell me how to see garray_class");
+  return;
+#else
+  if (!(a = (t_garray *)pd_findbyclass(s, garray_class))){
+    error("%s: no such array", s->s_name);
+    return;
+  } else 
+#endif
+  if (!garray_getfloatarray(a, &npoints, &vec)){
+    error("%s: bad template for tabread4", s->s_name);
+    return;
+  }
+
+  if(argc>0 && atom_getsymbol(argv+argc-1)==gensym("resize")){
+    resize=1;
+    argc--;
+  }
+  endfrom=npoints;
+
+  switch(argc){
+  case 0:break;
+  case 4:
+    endto    =atom_getfloat(argv+3);
+  case 3:
+    startto  =atom_getfloat(argv+2);
+  case 2:
+    endfrom  =atom_getfloat(argv+1);
+  case 1:
+    startfrom=atom_getfloat(argv);
+    break;
+  default:
+    error("table16: from <tablename> [<startfrom> [<endfrom> [<startto> [<endto>]]]] [resize]");
+    return;
+  }
+  if(startfrom<0)startfrom=0;
+  if  (startto<0)startto=0;
+  if(endfrom<=startfrom)return;
+  if(endto  <=startto)  return;
+
+  length=endfrom-startfrom;
+  if(resize){
+    if(x->x_size < (startto+length))table16_resize(x, startto+length);    
+  } else{
+    if(x->x_size < (startto+length))length=x->x_size-startto;
+  }
+  endfrom=startfrom+length;
+  endto  =startto+length;
+
+  dest=x->x_table+startto;
+  src =vec+startfrom;
+  i=length;
+  while(i--)*dest++=(*src++)*scale;
+  //post("from %s (%d, %d) --> (%d, %d)\tresize=%s", s->s_name, startfrom, endfrom, startto, endto, (resize)?"yes":"no");
+}
+
+#define BINREADMODE "rb"
+#define BINWRITEMODE "wb"
+static void table16_read16(t_table16 *x, t_symbol *filename,  t_symbol *endian, t_floatarg fskip)
+{
+    int skip = fskip, filedesc;
+    int i, nelem;
+    t_iem16_16bit *vec;
+    FILE *fd;
+    char buf[MAXPDSTRING], *bufptr;
+    short s;
+    int cpubig = am_bigendian(), swap = 0;
+    char c = endian->s_name[0];
+    if (c == 'b')
+    {
+        if (!cpubig) swap = 1;
+    }
+    else if (c == 'l')
+    {
+        if (cpubig) swap = 1;
+    }
+    else if (c)
+    {
+        error("array_read16: endianness is 'l' (low byte first ala INTEL)");
+        post("... or 'b' (high byte first ala MIPS,DEC,PPC)");
+    }
+    if (!table16_getarray16(x, &nelem, &vec))
+    {
+        error("%s: not a 16bit array", x->x_tablename->s_name);
+        return;
+    }
+    if ((filedesc = open_via_path(
+        canvas_getdir(x->x_canvas)->s_name,
+            filename->s_name, "", buf, &bufptr, MAXPDSTRING, 1)) < 0 
+                || !(fd = fdopen(filedesc, BINREADMODE))
+	)
+    {
+        error("%s: can't open", filename->s_name);
+        return;
+    }
+    if (skip)
+    {
+        long pos = fseek(fd, (long)skip, SEEK_SET);
+        if (pos < 0)
+        {
+            error("%s: can't seek to byte %d", buf, skip);
+            fclose(fd);
+            return;
+        }
+    }
+
+    for (i = 0; i < nelem; i++)
+    {
+        if (fread(&s, sizeof(s), 1, fd) < 1)
+        {
+            post("%s: read %d elements into table of size %d",
+                filename->s_name, i, nelem);
+            break;
+        }
+        if (swap) s = ((s & 0xff) << 8) | ((s & 0xff00) >> 8);
+        vec[i] = s;
+    }
+    while (i < nelem) vec[i++] = 0;
+    fclose(fd);
+}
+
+ 
+void table16_setup(void){
+  table16_class = class_new(gensym("table16"),
+			    (t_newmethod)table16_new, (t_method)table16_free,
+			    sizeof(t_table16), 0, A_DEFSYM, A_DEFFLOAT, 0);
+  class_addmethod(table16_class, (t_method)table16_resize, gensym("resize"), A_DEFFLOAT, 0);
+  class_addmethod(table16_class, (t_method)table16_const, gensym("const"), A_DEFFLOAT, 0);
+  class_addmethod(table16_class, (t_method)table16_from, gensym("from"), A_GIMME, 0);
+  class_addmethod(table16_class, (t_method)table16_read16, gensym("read16"),  A_SYMBOL, 
+                  A_DEFFLOAT, A_DEFSYM, 0);
+}
+
+
+void iem16_table_setup(void)
+{
+    table16_setup();
+}
+