Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-core / src / lib / general / gr_iqcomp_cc.cc

diff --git a/gnuradio-core/src/lib/general/gr_iqcomp_cc.cc b/gnuradio-core/src/lib/general/gr_iqcomp_cc.cc
new file mode 100644 (file)
index 0000000..e0a2c08
--- /dev/null
+++ b/gnuradio-core/src/lib/general/gr_iqcomp_cc.cc
@@ -0,0 +1,62 @@
+/* -*- 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 <gr_iqcomp_cc.h>
+#include <gr_io_signature.h>
+
+gr_iqcomp_cc_sptr
+gr_make_iqcomp_cc (float mu)
+{
+  return gr_iqcomp_cc_sptr (new gr_iqcomp_cc (mu));
+}
+
+gr_iqcomp_cc::gr_iqcomp_cc (float mu)
+  : gr_sync_block ("iqcomp_cc",
+                  gr_make_io_signature (1, 1, sizeof (gr_complex)),
+                  gr_make_io_signature (1, 1, sizeof (gr_complex))),
+    d_mu (mu)
+{
+  d_wi=0.0;
+  d_wq=0.0;
+}
+
+int
+gr_iqcomp_cc::work (int noutput_items,
+                  gr_vector_const_void_star &input_items,
+                  gr_vector_void_star &output_items)
+{
+  const gr_complex *iptr = (gr_complex *) input_items[0];
+  // gr_complex *optr = (gr_complex *) output_items[0];
+
+  for(int i = 0 ; i < noutput_items ; i++) {
+    float i_out = iptr[i].real() - iptr[i].imag() * d_wq;
+    float q_out = iptr[i].imag() - iptr[i].real() * d_wi;
+    d_wi += d_mu * q_out * iptr[i].real();
+    d_wq += d_mu * i_out * iptr[i].imag();
+  }
+  return noutput_items;
+}