Merged r7611:7614 from jcorgan/gpio into trunk. Adds custom

[debian/gnuradio] / gr-gpio / src / lib / gpio_and_const_ss.cc

diff --git a/gr-gpio/src/lib/gpio_and_const_ss.cc b/gr-gpio/src/lib/gpio_and_const_ss.cc
new file mode 100644 (file)
index 0000000..e930461
--- /dev/null
+++ b/gr-gpio/src/lib/gpio_and_const_ss.cc
@@ -0,0 +1,71 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2008 Free Software Foundation, Inc.
+ * 
+ * This file is part of GNU Radio
+ * 
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ * 
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gpio_and_const_ss.h>
+#include <gr_io_signature.h>
+
+gpio_and_const_ss_sptr
+gpio_make_and_const_ss (unsigned short k)
+{
+  return gpio_and_const_ss_sptr (new gpio_and_const_ss (k));
+}
+
+gpio_and_const_ss::gpio_and_const_ss (unsigned short k)
+  : gr_sync_block ("and_const_ss",
+                  gr_make_io_signature (1, 1, sizeof (short)),
+                  gr_make_io_signature (1, 1, sizeof (short))),
+    d_k (k)
+{
+}
+
+int
+gpio_and_const_ss::work (int noutput_items,
+                  gr_vector_const_void_star &input_items,
+                  gr_vector_void_star &output_items)
+{
+  short *iptr = (short *) input_items[0];
+  short *optr = (short *) output_items[0];
+
+  int  size = noutput_items;
+
+  while (size >= 8){
+    *optr++ = *iptr++ & d_k;
+    *optr++ = *iptr++ & d_k;
+    *optr++ = *iptr++ & d_k;
+    *optr++ = *iptr++ & d_k;
+    *optr++ = *iptr++ & d_k;
+    *optr++ = *iptr++ & d_k;
+    *optr++ = *iptr++ & d_k;
+    *optr++ = *iptr++ & d_k;
+    size -= 8;
+  }
+
+  while (size-- > 0)
+    *optr++ = *iptr++ & d_k;
+  
+  return noutput_items;
+}