float_dotprod_generic.c \
short_dotprod_generic.c \
gr_pfb_channelizer_ccf.cc \
+ gr_pfb_synthesis_filterbank_ccf.cc\
gr_pfb_decimator_ccf.cc \
gr_pfb_interpolator_ccf.cc \
gr_pfb_arb_resampler_ccf.cc \
short_dotprod_x86.h \
sse_debug.h \
gr_pfb_channelizer_ccf.h \
+ gr_pfb_synthesis_filterbank_ccf.h\
gr_pfb_decimator_ccf.h \
gr_pfb_interpolator_ccf.h \
gr_pfb_arb_resampler_ccf.h \
gr_single_pole_iir_filter_ff.i \
gr_single_pole_iir_filter_cc.i \
gr_pfb_channelizer_ccf.i \
+ gr_pfb_synthesis_filterbank_ccf.i\
gr_pfb_decimator_ccf.i \
gr_pfb_interpolator_ccf.i \
gr_pfb_arb_resampler_ccf.i \
#include <gr_goertzel_fc.h>
#include <gr_cma_equalizer_cc.h>
#include <gr_pfb_channelizer_ccf.h>
+#include <gr_pfb_synthesis_filterbank_ccf.h>
#include <gr_pfb_decimator_ccf.h>
#include <gr_pfb_interpolator_ccf.h>
#include <gr_pfb_arb_resampler_ccf.h>
%include "gr_goertzel_fc.i"
%include "gr_cma_equalizer_cc.i"
%include "gr_pfb_channelizer_ccf.i"
+%include "gr_pfb_synthesis_filterbank_ccf.i"
%include "gr_pfb_decimator_ccf.i"
%include "gr_pfb_interpolator_ccf.i"
%include "gr_pfb_arb_resampler_ccf.i"
--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2010 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_pfb_synthesis_filterbank_ccf.h>
+#include <gr_fir_ccf.h>
+#include <gr_fir_util.h>
+#include <gri_fft.h>
+#include <gr_io_signature.h>
+#include <cstdio>
+#include <cstring>
+
+gr_pfb_synthesis_filterbank_ccf_sptr gr_make_pfb_synthesis_filterbank_ccf
+ (unsigned int numchans, const std::vector<float> &taps)
+{
+ return gr_pfb_synthesis_filterbank_ccf_sptr
+ (new gr_pfb_synthesis_filterbank_ccf (numchans, taps));
+}
+
+
+gr_pfb_synthesis_filterbank_ccf::gr_pfb_synthesis_filterbank_ccf
+ (unsigned int numchans, const std::vector<float> &taps)
+ : gr_sync_interpolator ("pfb_synthesis_filterbank_ccf",
+ gr_make_io_signature (numchans, numchans, sizeof(gr_complex)),
+ gr_make_io_signature (1, 1, sizeof(gr_complex)),
+ numchans),
+ d_updated (false), d_numchans(numchans)
+{
+ d_filters = std::vector<gr_fir_ccf*>(d_numchans);
+
+ d_buffer = new gr_complex*[d_numchans];
+
+ // Create an FIR filter for each channel and zero out the taps
+ std::vector<float> vtaps(0, d_numchans);
+ for(unsigned int i = 0; i < d_numchans; i++) {
+ d_filters[i] = gr_fir_util::create_gr_fir_ccf(vtaps);
+ d_buffer[i] = new gr_complex[65535];
+ memset(d_buffer[i], 0, 65535*sizeof(gr_complex));
+ }
+
+ // Now, actually set the filters' taps
+ set_taps(taps);
+
+ // Create the IFFT to handle the input channel rotations
+ d_fft = new gri_fft_complex (d_numchans, true);
+}
+
+gr_pfb_synthesis_filterbank_ccf::~gr_pfb_synthesis_filterbank_ccf ()
+{
+ for(unsigned int i = 0; i < d_numchans; i++) {
+ delete d_filters[i];
+ }
+}
+
+void
+gr_pfb_synthesis_filterbank_ccf::set_taps (const std::vector<float> &taps)
+{
+ unsigned int i,j;
+
+ unsigned int ntaps = taps.size();
+ d_taps_per_filter = (unsigned int)ceil((double)ntaps/(double)d_numchans);
+
+ // Create d_numchan vectors to store each channel's taps
+ d_taps.resize(d_numchans);
+
+ // Make a vector of the taps plus fill it out with 0's to fill
+ // each polyphase filter with exactly d_taps_per_filter
+ std::vector<float> tmp_taps;
+ tmp_taps = taps;
+ while((float)(tmp_taps.size()) < d_numchans*d_taps_per_filter) {
+ tmp_taps.push_back(0.0);
+ }
+
+ // Partition the filter
+ for(i = 0; i < d_numchans; i++) {
+ // Each channel uses all d_taps_per_filter with 0's if not enough taps to fill out
+ d_taps[i] = std::vector<float>(d_taps_per_filter, 0);
+ for(j = 0; j < d_taps_per_filter; j++) {
+ d_taps[i][j] = tmp_taps[i + j*d_numchans]; // add taps to channels in reverse order
+ }
+
+ // Build a filter for each channel and add it's taps to it
+ d_filters[i]->set_taps(d_taps[i]);
+ }
+
+ // Set the history to ensure enough input items for each filter
+ set_history (d_taps_per_filter+1);
+
+ d_updated = true;
+}
+
+void
+gr_pfb_synthesis_filterbank_ccf::print_taps()
+{
+ unsigned int i, j;
+ for(i = 0; i < d_numchans; i++) {
+ printf("filter[%d]: [", i);
+ for(j = 0; j < d_taps_per_filter; j++) {
+ printf(" %.4e", d_taps[i][j]);
+ }
+ printf("]\n\n");
+ }
+}
+
+
+int
+gr_pfb_synthesis_filterbank_ccf::work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ gr_complex *in = (gr_complex*) input_items[0];
+ gr_complex *out = (gr_complex *) output_items[0];
+
+ if (d_updated) {
+ d_updated = false;
+ return 0; // history requirements may have changed.
+ }
+
+ unsigned int n, i;
+ for(n = 0; n < noutput_items/d_numchans; n++) {
+ for(i = 0; i < d_numchans; i++) {
+ in = (gr_complex*)input_items[i];
+ d_fft->get_inbuf()[i] = (in+i)[n];
+ }
+
+ // spin through IFFT
+ d_fft->execute();
+
+ for(i = 0; i < d_numchans; i++) {
+ d_buffer[i][n+d_taps_per_filter-1] = d_fft->get_outbuf()[i];
+ out[i] = d_filters[i]->filter(&d_buffer[i][n]);
+ }
+ out += d_numchans;
+ }
+
+ for(i = 0; i < d_numchans; i++) {
+ memcpy(d_buffer[i], &d_buffer[i][n],
+ (d_taps_per_filter)*sizeof(gr_complex));
+ }
+
+ return noutput_items;
+}
--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2010 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_PFB_SYNTHESIS_FILTERBANK_CCF_H
+#define INCLUDED_GR_PFB_SYNTHESIS_FILTERBANK_CCF_H
+
+#include <gr_sync_interpolator.h>
+
+class gr_pfb_synthesis_filterbank_ccf;
+typedef boost::shared_ptr<gr_pfb_synthesis_filterbank_ccf> gr_pfb_synthesis_filterbank_ccf_sptr;
+gr_pfb_synthesis_filterbank_ccf_sptr gr_make_pfb_synthesis_filterbank_ccf
+ (unsigned int numchans, const std::vector<float> &taps);
+
+class gr_fir_ccf;
+class gri_fft_complex;
+
+
+/*!
+ * \class gr_pfb_synthesis_filterbank_ccf
+ *
+ * \brief Polyphase synthesis filterbank with
+ * gr_complex input, gr_complex output and float taps
+ *
+ * \ingroup filter_blk
+ */
+
+class gr_pfb_synthesis_filterbank_ccf : public gr_sync_interpolator
+{
+ private:
+ /*!
+ * Build the polyphase synthesis filterbank.
+ * \param numchans (unsigned integer) Specifies the number of channels <EM>M</EM>
+ * \param taps (vector/list of floats) The prototype filter to populate the filterbank.
+ */
+ friend gr_pfb_synthesis_filterbank_ccf_sptr gr_make_pfb_synthesis_filterbank_ccf
+ (unsigned int numchans, const std::vector<float> &taps);
+
+ bool d_updated;
+ unsigned int d_numchans;
+ std::vector<gr_fir_ccf*> d_filters;
+ std::vector< std::vector<float> > d_taps;
+ unsigned int d_taps_per_filter;
+ gri_fft_complex *d_fft;
+ gr_complex **d_buffer;
+
+ /*!
+ * Build the polyphase synthesis filterbank.
+ * \param numchans (unsigned integer) Specifies the number of channels <EM>M</EM>
+ * \param taps (vector/list of floats) The prototype filter to populate the filterbank.
+ */
+ gr_pfb_synthesis_filterbank_ccf (unsigned int numchans,
+ const std::vector<float> &taps);
+
+public:
+ ~gr_pfb_synthesis_filterbank_ccf ();
+
+ /*!
+ * Resets the filterbank's filter taps with the new prototype filter
+ * \param taps (vector/list of floats) The prototype filter to populate the filterbank.
+ */
+ void set_taps (const std::vector<float> &taps);
+
+ /*!
+ * Print all of the filterbank taps to screen.
+ */
+ void print_taps();
+
+ int work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items);
+};
+
+#endif
--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2010 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.
+ */
+
+GR_SWIG_BLOCK_MAGIC(gr,pfb_synthesis_filterbank_ccf);
+
+gr_pfb_synthesis_filterbank_ccf_sptr gr_make_pfb_synthesis_filterbank_ccf
+ (unsigned int numchans, const std::vector<float> &taps);
+
+class gr_pfb_synthesis_filterbank_ccf : public gr_sync_interpolator
+{
+ private:
+ gr_pfb_synthesis_filterbank_ccf (unsigned int numchans,
+ const std::vector<float> &taps);
+
+ public:
+ ~gr_pfb_synthesis_filterbank_ccf ();
+
+ void set_taps (const std::vector<float> &taps);
+};
projects / debian / gnuradio / commitdiff