1 files changed, 0 insertions, 139 deletions
diff --git a/gr-digital/lib/digital_clock_recovery_mm_ff.cc b/gr-digital/lib/digital_clock_recovery_mm_ff.cc
deleted file mode 100644
index 04057f0e9..000000000
--- a/gr-digital/lib/digital_clock_recovery_mm_ff.cc
+++ /dev/null
@@ -1,139 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2004,2010,2011 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gr_io_signature.h>
-#include <digital_clock_recovery_mm_ff.h>
-#include <gri_mmse_fir_interpolator.h>
-#include <stdexcept>
-
-#define DEBUG_CR_MM_FF	0		// must be defined as 0 or 1
-
-// Public constructor
-
-digital_clock_recovery_mm_ff_sptr 
-digital_make_clock_recovery_mm_ff(float omega, float gain_omega,
-				  float mu, float gain_mu,
-				  float omega_relative_limit)
-{
-  return gnuradio::get_initial_sptr(new digital_clock_recovery_mm_ff (omega,
-								      gain_omega, 
-								      mu,
-								      gain_mu,
-								      omega_relative_limit));
-}
-
-digital_clock_recovery_mm_ff::digital_clock_recovery_mm_ff (float omega, float gain_omega,
-							    float mu, float gain_mu,
-							    float omega_relative_limit)
-  : gr_block ("clock_recovery_mm_ff",
-	      gr_make_io_signature (1, 1, sizeof (float)),
-	      gr_make_io_signature (1, 1, sizeof (float))),
-    d_mu (mu), d_gain_omega(gain_omega), d_gain_mu(gain_mu),
-    d_last_sample(0), d_interp(new gri_mmse_fir_interpolator()),
-    d_logfile(0), d_omega_relative_limit(omega_relative_limit)
-{
-  if (omega <  1)
-    throw std::out_of_range ("clock rate must be > 0");
-  if (gain_mu <  0  || gain_omega < 0)
-    throw std::out_of_range ("Gains must be non-negative");
-
-  set_omega(omega);			// also sets min and max omega
-  set_relative_rate (1.0 / omega);
-
-  if (DEBUG_CR_MM_FF)
-    d_logfile = fopen("cr_mm_ff.dat", "wb");
-}
-
-digital_clock_recovery_mm_ff::~digital_clock_recovery_mm_ff ()
-{
-  delete d_interp;
-
-  if (DEBUG_CR_MM_FF && d_logfile){
-    fclose(d_logfile);
-    d_logfile = 0;
-  }
-}
-
-void
-digital_clock_recovery_mm_ff::forecast(int noutput_items, gr_vector_int &ninput_items_required)
-{
-  unsigned ninputs = ninput_items_required.size();
-  for (unsigned i=0; i < ninputs; i++)
-    ninput_items_required[i] =
-      (int) ceil((noutput_items * d_omega) + d_interp->ntaps());
-}
-
-static inline float
-slice(float x)
-{
-  return x < 0 ? -1.0F : 1.0F;
-}
-
-/*
- * This implements the Mueller and Müller (M&M) discrete-time error-tracking synchronizer.
- *
- * See "Digital Communication Receivers: Synchronization, Channel
- * Estimation and Signal Processing" by Heinrich Meyr, Marc Moeneclaey, & Stefan Fechtel.
- * ISBN 0-471-50275-8.
- */
-int
-digital_clock_recovery_mm_ff::general_work (int noutput_items,
-					    gr_vector_int &ninput_items,
-					    gr_vector_const_void_star &input_items,
-					    gr_vector_void_star &output_items)
-{
-  const float *in = (const float *) input_items[0];
-  float *out = (float *) output_items[0];
-
-  int 	ii = 0;				// input index
-  int  	oo = 0;				// output index
-  int   ni = ninput_items[0] - d_interp->ntaps(); // don't use more input than this
-  float mm_val;
-
-  while (oo < noutput_items && ii < ni ){
-
-    // produce output sample
-    out[oo] = d_interp->interpolate (&in[ii], d_mu);
-    mm_val = slice(d_last_sample) * out[oo] - slice(out[oo]) * d_last_sample;
-    d_last_sample = out[oo];
-
-    d_omega = d_omega + d_gain_omega * mm_val;
-    d_omega = d_omega_mid + gr_branchless_clip(d_omega-d_omega_mid, d_omega_relative_limit);   // make sure we don't walk away
-    d_mu = d_mu + d_omega + d_gain_mu * mm_val;
-
-    ii += (int) floor(d_mu);
-    d_mu = d_mu - floor(d_mu);
-    oo++;
-
-    if (DEBUG_CR_MM_FF && d_logfile){
-      fwrite(&d_omega, sizeof(d_omega), 1, d_logfile);
-    }
-  }
-
-  consume_each (ii);
-
-  return oo;
-}