analog: added fmdet block to gr-analog.

2 files changed, 71 insertions, 0 deletions

diff --git a/gr-analog/include/analog/CMakeLists.txt b/gr-analog/include/analog/CMakeLists.txt
index 40af6e55d..3c049bfd3 100644
--- a/gr-analog/include/analog/CMakeLists.txt
+++ b/gr-analog/include/analog/CMakeLists.txt
@@ -88,6 +88,7 @@ install(FILES
     ctcss_squelch_ff.h
     dpll_bb.h
     feedforward_agc_cc.h
+    fmdet_cf.j
     DESTINATION ${GR_INCLUDE_DIR}/gnuradio/analog
     COMPONENT "analog_devel"
 )
diff --git a/gr-analog/include/analog/fmdet_cf.h b/gr-analog/include/analog/fmdet_cf.h
new file mode 100644
index 000000000..6878775e6
--- /dev/null
+++ b/gr-analog/include/analog/fmdet_cf.h
@@ -0,0 +1,70 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2008,2012 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_ANALOG_FMDET_CF_H
+#define INCLUDED_ANALOG_FMDET_CF_H
+
+#include <analog/api.h>
+#include <gr_sync_block.h>
+
+namespace gr {
+  namespace analog {
+
+    /*!
+     * \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 ANALOG_API fmdet_cf : virtual public gr_sync_block
+    {
+    public:
+      // gr::analog::fmdet_cf::sptr
+      typedef boost::shared_ptr<fmdet_cf> sptr;
+
+      /*!
+       * \brief Make FM detector block.
+       *
+       * \param samplerate sample rate of signal (is not used; to be removed)
+       * \param freq_low lowest frequency of signal (Hz)
+       * \param freq_high highest frequency of signal (Hz)
+       * \param scl scale factor
+       */
+      static sptr make(float samplerate, float freq_low,
+		       float freq_high, float scl);
+
+      virtual void set_scale(float scl) = 0;
+      virtual void set_freq_range(float freq_low, float freq_high) = 0;
+
+      virtual float freq() const = 0;
+      virtual float freq_high() const = 0;
+      virtual float freq_low() const = 0;
+      virtual float scale() const = 0;
+      virtual float bias() const = 0;
+    };
+
+  } /* namespace analog */
+} /* namespace gr */
+
+#endif /* INCLUDED_ANALOG_FMDET_CF_H */