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/* -*- c++ -*- */
/*
* Copyright 2014 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 "atsc_deinterleaver_impl.h"
#include "gnuradio/dtv/atsc_consts.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace dtv {
atsc_deinterleaver::sptr atsc_deinterleaver::make()
{
return gnuradio::make_block_sptr<atsc_deinterleaver_impl>();
}
atsc_deinterleaver_impl::atsc_deinterleaver_impl()
: gr::sync_block(
"atsc_deinterleaver",
io_signature::make2(
2, 2, ATSC_MPEG_RS_ENCODED_LENGTH * sizeof(uint8_t), sizeof(plinfo)),
io_signature::make2(
2, 2, ATSC_MPEG_RS_ENCODED_LENGTH * sizeof(uint8_t), sizeof(plinfo))),
alignment_fifo(156)
{
m_fifo.reserve(s_interleavers);
for (int i = 0; i < s_interleavers; i++)
m_fifo.emplace_back((s_interleavers - 1 - i) * 4);
sync();
}
atsc_deinterleaver_impl::~atsc_deinterleaver_impl() {}
void atsc_deinterleaver_impl::reset()
{
sync();
for (auto& i : m_fifo)
i.reset();
}
int atsc_deinterleaver_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
auto in = static_cast<const uint8_t*>(input_items[0]);
auto out = static_cast<uint8_t*>(output_items[0]);
auto plin = static_cast<const plinfo*>(input_items[1]);
auto plout = static_cast<plinfo*>(output_items[1]);
for (int i = 0; i < noutput_items; i++) {
assert(plin[i].regular_seg_p());
// reset commutator if required using INPUT pipeline info
if (plin[i].first_regular_seg_p())
sync();
// remap OUTPUT pipeline info to reflect all data segment end-to-end delay
plout[i] = plinfo();
plinfo::delay(plout[i], plin[i], s_interleavers);
// now do the actual deinterleaving
for (unsigned int j = 0; j < ATSC_MPEG_RS_ENCODED_LENGTH; j++) {
out[i * ATSC_MPEG_RS_ENCODED_LENGTH + j] =
alignment_fifo.stuff(transform(in[i * ATSC_MPEG_RS_ENCODED_LENGTH + j]));
}
}
return noutput_items;
}
} /* namespace dtv */
} /* namespace gr */
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