Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-core / src / lib / filter / gr_fractional_interpolator_ff.h

diff --git a/gnuradio-core/src/lib/filter/gr_fractional_interpolator_ff.h b/gnuradio-core/src/lib/filter/gr_fractional_interpolator_ff.h
new file mode 100644 (file)
index 0000000..f501292
--- /dev/null
+++ b/gnuradio-core/src/lib/filter/gr_fractional_interpolator_ff.h
@@ -0,0 +1,67 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2007 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_FRACTIONAL_INTERPOLATOR_FF_H
+#define        INCLUDED_GR_FRACTIONAL_INTERPOLATOR_FF_H
+
+#include <gr_block.h>
+
+class gri_mmse_fir_interpolator;
+
+class gr_fractional_interpolator_ff;
+typedef boost::shared_ptr<gr_fractional_interpolator_ff> gr_fractional_interpolator_ff_sptr;
+
+// public constructor
+gr_fractional_interpolator_ff_sptr gr_make_fractional_interpolator_ff (float phase_shift, float interp_ratio);
+
+/*!
+ * \brief Interpolating mmse filter with float input, float output
+ * \ingroup filter_blk
+ */
+class gr_fractional_interpolator_ff : public gr_block
+{
+public:
+  ~gr_fractional_interpolator_ff ();
+  void forecast(int noutput_items, gr_vector_int &ninput_items_required);
+  int general_work (int noutput_items,
+                   gr_vector_int &ninput_items,
+                   gr_vector_const_void_star &input_items,
+                   gr_vector_void_star &output_items);
+
+  float mu() const { return d_mu;}
+  float interp_ratio() const { return d_mu_inc;}
+  void set_mu (float mu) { d_mu = mu; }
+  void set_interp_ratio (float interp_ratio) { d_mu_inc = interp_ratio; }
+
+protected:
+  gr_fractional_interpolator_ff (float phase_shift, float interp_ratio);
+
+private:
+  float                        d_mu;
+  float                        d_mu_inc;
+  gri_mmse_fir_interpolator    *d_interp;
+
+  friend gr_fractional_interpolator_ff_sptr
+  gr_make_fractional_interpolator_ff (float phase_shift, float interp_ratio);
+};
+
+#endif