Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-core / src / lib / general / gr_fmdet_cf.h

diff --git a/gnuradio-core/src/lib/general/gr_fmdet_cf.h b/gnuradio-core/src/lib/general/gr_fmdet_cf.h
new file mode 100644 (file)
index 0000000..7e8be31
--- /dev/null
+++ b/gnuradio-core/src/lib/general/gr_fmdet_cf.h
@@ -0,0 +1,58 @@
+/* -*- 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.
+ */
+
+#ifndef INCLUDED_GR_FMDET_CF_H
+#define INCLUDED_GR_FMDET_CF_H
+
+#include <gr_sync_block.h>
+
+class gr_fmdet_cf;
+typedef boost::shared_ptr<gr_fmdet_cf> gr_fmdet_cf_sptr;
+
+gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
+
+/*!
+ * \brief Implements an IQ slope detector
+ * 
+ *
+ * input: stream of complex; output: stream of floats
+ *
+ * This implements a limiting slope detector.  The limiter is in the
+ * normalization by the magnitude of the sample 
+ */
+
+class gr_fmdet_cf : public gr_sync_block
+{
+  friend gr_fmdet_cf_sptr gr_make_fmdet_cf (float samplerate, float freq_low,
+                                           float freq_high, float scl);
+
+  gr_complex d_S1,d_S2,d_S3,d_S4;
+  float d_freq,d_freqlo,d_freqhi,d_scl,d_bias;
+  gr_fmdet_cf (float samplerate, float freq_low, float freq_high, float scl);
+
+  int work (int noutput_items,
+           gr_vector_const_void_star &input_items,
+           gr_vector_void_star &output_items);
+
+};
+
+#endif