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/* -*- c++ -*- */
/*
* Copyright 2004 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.
*/
/*
* config.h is generated by configure. It contains the results
* of probing for features, options etc. It should be the first
* file included in your .cc file.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stddef.h>
#include <gnuradio/io_signature.h>
#include "sum_phasor_trig_vcc_impl.h"
namespace gr {
namespace dab {
sum_phasor_trig_vcc::sptr
sum_phasor_trig_vcc::make(unsigned int length)
{
return gnuradio::get_initial_sptr
(new sum_phasor_trig_vcc_impl(length));
}
sum_phasor_trig_vcc_impl::sum_phasor_trig_vcc_impl(unsigned int length)
: gr::sync_block("sum_phasor_trig_vcc",
gr::io_signature::make2 (2, 2, sizeof(gr_complex)*length, sizeof(char)),
gr::io_signature::make2 (2, 2, sizeof(gr_complex)*length, sizeof(char))),
d_length(length), d_last_symbol(length,0)
{
}
int
sum_phasor_trig_vcc_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
gr_complex const *in = (const gr_complex *) input_items[0];
gr_complex *out = (gr_complex *) output_items[0];
gr_complex *lastout;
const char *frame_start = (const char *) input_items[1];
char *o_frame_start = (char *) output_items[1];
for(int i = 0; i < noutput_items; i++){
if (*frame_start==1) {
for (unsigned int j=0; j<d_length; j++)
out[j] = in[j];
} else {
if (i==0) {
for (unsigned int j=0; j<d_length; j++)
out[j] = in[j] * d_last_symbol[j];
} else {
for (unsigned int j=0; j<d_length; j++) {
// printf("%p\n", &lastout[j]);
// printf("%p\n", &out[j+ptrdiff_t(-d_length)]);
out[j] = in[j] * lastout[j];
// out[j] = in[j] * (&out[j-d_length])[0];
}
}
}
*o_frame_start++ = *frame_start++;
/* need to remember last OFDM symbol before leaving function */
if (i == noutput_items-1) {
for (unsigned int j=0; j<d_length; j++)
d_last_symbol[j] = out[j];
}
lastout = out;
out+=d_length;
in+=d_length;
}
return noutput_items;
}
}
}
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