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Diffstat (limited to 'gr-analog/lib/fmdet_cf_impl.cc')
-rw-r--r--gr-analog/lib/fmdet_cf_impl.cc129
1 files changed, 0 insertions, 129 deletions
diff --git a/gr-analog/lib/fmdet_cf_impl.cc b/gr-analog/lib/fmdet_cf_impl.cc
deleted file mode 100644
index c92ea2889..000000000
--- a/gr-analog/lib/fmdet_cf_impl.cc
+++ /dev/null
@@ -1,129 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2008,2010,2012 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "fmdet_cf_impl.h"
-#include <gr_io_signature.h>
-#include <gr_math.h>
-
-namespace gr {
- namespace analog {
-
-#define M_TWOPI (2*M_PI)
-
- fmdet_cf::sptr
- fmdet_cf::make(float samplerate, float freq_low,
- float freq_high, float scl)
- {
- return gnuradio::get_initial_sptr
- (new fmdet_cf_impl(samplerate, freq_low, freq_high, scl));
- }
-
- fmdet_cf_impl::fmdet_cf_impl(float samplerate, float freq_low,
- float freq_high, float scl)
- : gr_sync_block("fmdet_cf",
- gr_make_io_signature(1, 1, sizeof(gr_complex)),
- gr_make_io_signature(1, 1, sizeof(float))),
- d_S1(0.1), d_S2(0.1),
- d_S3(0.1), d_S4(0.1)
- {
- //const float h[] = { 0.003118678733, -0.012139843428, 0.027270898036,
- // -0.051318579352, 0.090406910552, -0.162926865366,
- // 0.361885392563, 0.000000000000, -0.361885392563,
- // 0.162926865366, -0.090406910552, 0.051318579352,
- // -0.027270898036, 0.012139843428, -0.003118678733};
-
- //std::vector<float> taps(15);
-
- d_freq = 0;
- d_freqhi = freq_high;
- d_freqlo = freq_low;
- set_scale(scl);
-
- //for(int i = 0; i < 15; i++) {
- //taps[i] = h[i];
- //}
- // d_filter = gr_fir_util::create_gr_fir_ccf(taps);
- }
-
- fmdet_cf_impl::~fmdet_cf_impl()
- {
- }
-
- void
- fmdet_cf_impl::set_scale(float scl)
- {
- float delta = d_freqhi - d_freqlo;
- d_scl = scl;
- d_bias = 0.5*scl*(d_freqhi + d_freqlo) / delta;
- }
-
- void
- fmdet_cf_impl::set_freq_range(float freq_low, float freq_high)
- {
- d_freqhi = freq_high;
- d_freqlo = freq_low;
- set_scale(d_scl);
- }
-
- int
- fmdet_cf_impl::work(int noutput_items,
- gr_vector_const_void_star &input_items,
- gr_vector_void_star &output_items)
- {
- const gr_complex *iptr = (gr_complex*)input_items[0];
- float *optr = (float*)output_items[0];
- //const gr_complex *scaleiptr = (gr_complex*)input_items[0];
-
- int size = noutput_items;
-
- gr_complex Sdot, S0;
- gr_complex S1=d_S1, S2=d_S2, S3=d_S3, S4=d_S4;
- float d_8 = 8.0;
-
- while(size-- > 0) {
- S0 = *iptr++;
-
- Sdot = d_scl * (-S0+d_8*S1-d_8*S1+S4);
-
- d_freq = (S2.real()*Sdot.imag()-S2.imag()*Sdot.real()) /
- (S2.real()*S2.real()+S2.imag()*S2.imag());
-
- S4 = S3;
- S3 = S2;
- S2 = S1;
- S1 = S0;
-
- *optr++ = d_freq-d_bias;
- }
- d_S1 = S1;
- d_S2 = S2;
- d_S3 = S3;
- d_S4 = S4;
- return noutput_items;
- }
-
- } /* namespace analog */
-} /* namespace gr */