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/* -*- c++ -*- */
/*
* Copyright 2004,2010,2012,2018 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 "chunks_to_symbols_impl.h"
#include <gnuradio/io_signature.h>
#include <pmt/pmt.h>
#include <cassert>
namespace gr {
namespace digital {
void set_vector_from_pmt(std::vector<gr_complex>& symbol_table,
const pmt::pmt_t& symbol_table_pmt)
{
size_t length;
const gr_complex* elements = pmt::c32vector_elements(symbol_table_pmt, length);
symbol_table.assign(elements, elements + length);
}
void set_vector_from_pmt(std::vector<float>& symbol_table,
const pmt::pmt_t& symbol_table_pmt)
{
size_t length;
const float* elements = pmt::f32vector_elements(symbol_table_pmt, length);
symbol_table.assign(elements, elements + length);
}
template <class IN_T, class OUT_T>
typename chunks_to_symbols<IN_T, OUT_T>::sptr
chunks_to_symbols<IN_T, OUT_T>::make(const std::vector<OUT_T>& symbol_table,
const unsigned int D)
{
return gnuradio::make_block_sptr<chunks_to_symbols_impl<IN_T, OUT_T>>(symbol_table,
D);
}
template <class IN_T, class OUT_T>
chunks_to_symbols_impl<IN_T, OUT_T>::chunks_to_symbols_impl(
const std::vector<OUT_T>& symbol_table, const unsigned int D)
: sync_interpolator("chunks_to_symbols",
io_signature::make(1, -1, sizeof(IN_T)),
io_signature::make(1, -1, sizeof(OUT_T)),
D),
d_D(D),
d_symbol_table(symbol_table),
symbol_table_key(pmt::mp("set_symbol_table"))
{
this->message_port_register_in(symbol_table_key);
this->set_msg_handler(symbol_table_key, [this](const pmt::pmt_t& msg) {
this->handle_set_symbol_table(msg);
});
}
template <class IN_T, class OUT_T>
chunks_to_symbols_impl<IN_T, OUT_T>::~chunks_to_symbols_impl()
{
}
template <class IN_T, class OUT_T>
void chunks_to_symbols_impl<IN_T, OUT_T>::handle_set_symbol_table(
const pmt::pmt_t& symbol_table_pmt)
{
set_vector_from_pmt(d_symbol_table, symbol_table_pmt);
}
template <class IN_T, class OUT_T>
void chunks_to_symbols_impl<IN_T, OUT_T>::set_symbol_table(
const std::vector<OUT_T>& symbol_table)
{
gr::thread::scoped_lock lock(this->d_setlock);
d_symbol_table = symbol_table;
}
template <class IN_T, class OUT_T>
int chunks_to_symbols_impl<IN_T, OUT_T>::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
gr::thread::scoped_lock lock(this->d_setlock);
auto nstreams = input_items.size();
for (unsigned int m = 0; m < nstreams; m++) {
const auto* in = reinterpret_cast<const IN_T*>(input_items[m]);
// NB: The compiler can't know whether all specializations of `chunks_to_symbol`
// are subclasses of gr::block. Hence the "this->" hoop we have to jump through to
// access members of parent classes.
size_t in_count = this->nitems_read(m);
auto out = reinterpret_cast<OUT_T*>(output_items[m]);
std::vector<tag_t> tags;
this->get_tags_in_range(
tags, m, this->nitems_read(m), this->nitems_read(m) + noutput_items / d_D);
// per tag: all the samples leading up to this tag can be handled straightforward
// with the current settings
if (d_D == 1) {
for (const auto& tag : tags) {
for (; in_count < tag.offset; ++in_count) {
auto key = static_cast<unsigned int>(*in);
*out = d_symbol_table[key];
++out;
++in;
}
if (tag.key == symbol_table_key) {
handle_set_symbol_table(tag.value);
}
}
// after the last tag, continue working on the remaining items
for (; in < reinterpret_cast<const IN_T*>(input_items[m]) + noutput_items;
++in) {
auto key = static_cast<unsigned int>(*in);
*out = d_symbol_table[key];
++out;
}
} else { // the multi-dimensional case
for (const auto& tag : tags) {
for (; in_count < tag.offset; ++in_count) {
auto key = static_cast<unsigned int>(*in) * d_D;
for (unsigned int idx = 0; idx < d_D; ++idx) {
*out = d_symbol_table[key + idx];
++out;
}
++in;
}
if (tag.key == symbol_table_key) {
handle_set_symbol_table(tag.value);
}
}
// after the last tag, continue working on the remaining items
for (; in < reinterpret_cast<const IN_T*>(input_items[m]) + noutput_items;
++in) {
auto key = static_cast<unsigned int>(*in) * d_D;
for (unsigned int idx = 0; idx < d_D; ++idx) {
*out = d_symbol_table[key + idx];
++out;
}
}
}
}
return noutput_items;
}
template class chunks_to_symbols<std::uint8_t, float>;
template class chunks_to_symbols<std::uint8_t, gr_complex>;
template class chunks_to_symbols<std::int16_t, float>;
template class chunks_to_symbols<std::int16_t, gr_complex>;
template class chunks_to_symbols<std::int32_t, float>;
template class chunks_to_symbols<std::int32_t, gr_complex>;
} /* namespace digital */
} /* namespace gr */
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