1 files changed, 63 insertions, 0 deletions
diff --git a/gr-vocoder/include/gnuradio/vocoder/freedv_rx_ss.h b/gr-vocoder/include/gnuradio/vocoder/freedv_rx_ss.h
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index 0000000000..a6568dee7d
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+++ b/gr-vocoder/include/gnuradio/vocoder/freedv_rx_ss.h
@@ -0,0 +1,63 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2016 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_VOCODER_FREEDV_RX_H
+#define INCLUDED_VOCODER_FREEDV_RX_H
+
+#include <gnuradio/vocoder/api.h>
+#include <gnuradio/vocoder/freedv_api.h>
+#include <gnuradio/block.h>
+
+namespace gr {
+  namespace vocoder {
+
+    /*!
+     * \brief FreeDV demodulator
+     * \ingroup audio_blk
+     *
+     * Input: 16-bit short values of an audio signal with sampling rate 8 kHz.
+     *
+     * Output: 16-bit short values of an audio signal with sampling rate 8 kHz.
+     *
+     * See also gr::vocoder::freedv_tx_ss.
+     */
+    class VOCODER_API freedv_rx_ss : virtual public gr::block
+    {
+    public:
+      typedef boost::shared_ptr<freedv_rx_ss> sptr;
+
+      /*!
+       * \brief Make FreeDV modem demodulator block.
+       *
+       * \param mode Operating Mode designation
+       * \param squelch_thresh FreeDV modem squelch threshold value
+       */
+      static sptr make(int mode=freedv_api::MODE_1600, float squelch_thresh=-100.0);
+
+      virtual void set_squelch_thresh(float squelch_thresh) = 0;
+      virtual float squelch_thresh() = 0;
+    };
+
+  } /* namespace vocoder */
+} /* namespace gr */
+
+#endif /* INCLUDED_VOCODER_FREEDV_RX_H */