1 files changed, 65 insertions, 0 deletions
diff --git a/gr-analog/lib/squelch_base_cc_impl.h b/gr-analog/lib/squelch_base_cc_impl.h
new file mode 100644
index 000000000..19dccaa10
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+++ b/gr-analog/lib/squelch_base_cc_impl.h
@@ -0,0 +1,65 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2012 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_GR_SQUELCH_BASE_CC_IMPL_H
+#define INCLUDED_GR_SQUELCH_BASE_CC_IMPL_H
+
+#include <analog/squelch_base_cc.h>
+
+namespace gr {
+  namespace analog {
+
+    class squelch_base_cc_impl : public squelch_base_cc
+    {
+    private:
+      int    d_ramp;
+      int    d_ramped;
+      bool   d_gate;
+      double d_envelope;
+      enum { ST_MUTED, ST_ATTACK, ST_UNMUTED, ST_DECAY } d_state;
+
+    protected:
+      virtual void update_state(const gr_complex &sample) {};
+      virtual bool mute() const { return false; };
+
+    public:
+      squelch_base_cc_impl(const char *name, int ramp, bool gate);
+      ~squelch_base_cc_impl();
+
+      int ramp() const;
+      void set_ramp(int ramp);
+      bool gate() const;
+      void set_gate(bool gate);
+      bool unmuted() const;
+
+      virtual std::vector<float> squelch_range() const = 0;
+
+      int general_work(int noutput_items,
+		       gr_vector_int &ninput_items,
+		       gr_vector_const_void_star &input_items,
+		       gr_vector_void_star &output_items);
+    };
+
+  } /* namespace analog */
+} /* namespace gr */
+
+#endif /* INCLUDED_ANALOG_SQUELCH_BASE_IMPL_FF_H */