1 files changed, 139 insertions, 0 deletions
diff --git a/dmx512/src/dmxin.c b/dmx512/src/dmxin.c
new file mode 100644
index 0000000..c009570
--- /dev/null
+++ b/dmx512/src/dmxin.c
@@ -0,0 +1,139 @@
+/******************************************************
+ *
+ * dmxin - implementation file
+ *
+ * copyleft (c) IOhannes m zmölnig
+ *
+ *   0603:forum::für::umläute:2008
+ *
+ *   institute of electronic music and acoustics (iem)
+ *
+ ******************************************************
+ *
+ * license: GNU General Public License v.2
+ *
+ ******************************************************/
+
+
+#include "dmx4pd.h"
+
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+static t_class *dmxin_class;
+
+typedef struct _dmxin
+{
+  t_object x_obj;
+  int      x_device;
+  int      x_port;
+
+  dmx_t x_dmxbuffer[512];
+
+
+  t_outlet*x_outlet1, *x_outlet2;
+} t_dmxin;
+
+static void dmx_doread(t_dmxin*x) {
+  int dmxin=x->x_device;
+  fd_set readset;
+  post("dmxin_doread: %d", dmxin);
+  if(dmxin<=0)return;
+
+  FD_ZERO(&readset);
+  FD_SET(dmxin, &readset);
+  FD_SET(0, &readset);
+
+  int n=select(dmxin+1, &readset, NULL,NULL, NULL);
+  if(n>0 && FD_ISSET(dmxin, &readset)) {
+    dmx_t dmxbuffer[512];
+    int i=0;
+    lseek (dmxin, 0, SEEK_SET);
+    n=read (dmxin, dmxbuffer, sizeof(dmxbuffer));
+    for(i=0; i<512; i+=2) {
+      int c=dmxbuffer[i];
+      if(c!=x->x_dmxbuffer[i]) {
+        x->x_dmxbuffer[i]=c;
+        post("read %03d @ %03d", c, i);
+      }
+    }
+  }
+}
+static void dmxin_bang(t_dmxin*x)
+{
+  dmx_doread(x);
+}
+
+static void dmxin_close(t_dmxin*x)
+{
+  if(x->x_device>=0) {
+    close(x->x_device);
+  }
+  x->x_device=-1;
+}
+
+
+static void dmxin_open(t_dmxin*x, t_symbol*s_devname)
+{
+  int argc=2;
+  const char *args[2] = {"--dmxin", s_devname->s_name};
+  const char**argv=args;
+  char*devname="";
+  int fd;
+
+  if(s_devname && s_devname->s_name)
+    devname=s_devname->s_name;
+
+  //  strncpy(args[0], "--dmx", MAXPDSTRING);
+  //  strncpy(args[1], devname, MAXPDSTRING);
+
+  fd = open (DMXINdev(&argc, argv), O_RDONLY);
+
+  if(fd!=-1) {
+    dmxin_close(x);
+    x->x_device=fd;
+  }
+}
+
+
+static void *dmxin_new(void)
+{
+  int i=0;
+  t_dmxin *x = (t_dmxin *)pd_new(dmxin_class);
+
+  x->x_device=0;
+  x->x_port=0;
+
+  for(i=0; i<sizeof(x->x_dmxbuffer); i++) {
+    x->x_dmxbuffer[i]=0;
+  }
+
+
+  x->x_outlet1=outlet_new(&x->x_obj, &s_float);
+  x->x_outlet2=outlet_new(&x->x_obj, &s_float);
+
+
+
+  dmxin_open(x, gensym(""));
+  return (x);
+}
+static void dmxin_free(t_dmxin*x)
+{
+  dmxin_close(x);
+}
+
+void dmxin_setup(void)
+{
+  dmxin_class = class_new(gensym("dmxin"), (t_newmethod)dmxin_new, (t_method)dmxin_free,
+                          sizeof(t_dmxin),  
+                          0,
+                          A_NULL);
+  
+  class_addbang(dmxin_class, dmxin_bang);
+  
+#ifdef DMX4PD_POSTBANNER
+  DMX4PD_POSTBANNER;
+#endif
+}