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/* -*- c++ -*- */
/*
* Copyright 2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "patterned_interleaver_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace blocks {
patterned_interleaver::sptr patterned_interleaver::make(size_t itemsize,
std::vector<int> pattern)
{
return gnuradio::make_block_sptr<patterned_interleaver_impl>(itemsize, pattern);
}
patterned_interleaver_impl::patterned_interleaver_impl(size_t itemsize,
std::vector<int> pattern)
: block("patterned_interleaver",
io_signature::make(
pattern_max(pattern) + 1, pattern_max(pattern) + 1, itemsize),
io_signature::make(1, 1, itemsize)),
d_pattern(pattern),
d_counts(pattern_max(pattern) + 1, 0),
d_itemsize(itemsize)
{
for (const auto& i : d_pattern) {
d_counts[i]++;
}
set_output_multiple(d_pattern.size());
}
int patterned_interleaver_impl::general_work(int noutput_items,
gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
size_t nblks = noutput_items / d_pattern.size();
std::vector<const char*> ii;
for (size_t i = 0; i < input_items.size(); i++) {
ii.push_back((const char*)input_items[i]);
}
char* oo = (char*)output_items[0];
for (size_t i = 0; i < nblks; i++) {
for (size_t j = 0; j < d_pattern.size(); j++) {
memcpy(oo, ii[d_pattern[j]], d_itemsize);
oo += d_itemsize;
ii[d_pattern[j]] += d_itemsize;
}
}
for (size_t i = 0; i < d_counts.size(); i++) {
consume(i, d_counts[i] * nblks);
}
return nblks * d_pattern.size();
}
void patterned_interleaver_impl::forecast(int noutput_items,
gr_vector_int& ninput_items_required)
{
int nblks = noutput_items / d_pattern.size();
for (size_t i = 0; i < ninput_items_required.size(); i++) {
ninput_items_required[i] = d_counts[i] * nblks;
}
}
} /* namespace blocks */
} /* namespace gr */
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