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ldpc_decoder_cb_impl.cc
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/* -*- c++ -*- */
/*
* Copyright 2018,2019 Ahmet Inan, Ron Economos.
*
* This 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.
*
* This software 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 this software; 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 "ldpc_decoder_cb_impl.h"
#include <gnuradio/io_signature.h>
#include <stdio.h>
#include <cmath>
#include <iostream>
constexpr int DVB_S2_TABLE_B1::DEG[];
constexpr int DVB_S2_TABLE_B1::LEN[];
constexpr int DVB_S2_TABLE_B1::POS[];
constexpr int DVB_S2_TABLE_B2::DEG[];
constexpr int DVB_S2_TABLE_B2::LEN[];
constexpr int DVB_S2_TABLE_B2::POS[];
constexpr int DVB_S2_TABLE_B3::DEG[];
constexpr int DVB_S2_TABLE_B3::LEN[];
constexpr int DVB_S2_TABLE_B3::POS[];
constexpr int DVB_S2_TABLE_B4::DEG[];
constexpr int DVB_S2_TABLE_B4::LEN[];
constexpr int DVB_S2_TABLE_B4::POS[];
constexpr int DVB_S2_TABLE_B5::DEG[];
constexpr int DVB_S2_TABLE_B5::LEN[];
constexpr int DVB_S2_TABLE_B5::POS[];
constexpr int DVB_S2_TABLE_B6::DEG[];
constexpr int DVB_S2_TABLE_B6::LEN[];
constexpr int DVB_S2_TABLE_B6::POS[];
constexpr int DVB_S2_TABLE_B7::DEG[];
constexpr int DVB_S2_TABLE_B7::LEN[];
constexpr int DVB_S2_TABLE_B7::POS[];
constexpr int DVB_S2_TABLE_B8::DEG[];
constexpr int DVB_S2_TABLE_B8::LEN[];
constexpr int DVB_S2_TABLE_B8::POS[];
constexpr int DVB_S2_TABLE_B9::DEG[];
constexpr int DVB_S2_TABLE_B9::LEN[];
constexpr int DVB_S2_TABLE_B9::POS[];
constexpr int DVB_S2_TABLE_B10::DEG[];
constexpr int DVB_S2_TABLE_B10::LEN[];
constexpr int DVB_S2_TABLE_B10::POS[];
constexpr int DVB_S2_TABLE_B11::DEG[];
constexpr int DVB_S2_TABLE_B11::LEN[];
constexpr int DVB_S2_TABLE_B11::POS[];
constexpr int DVB_S2X_TABLE_B1::DEG[];
constexpr int DVB_S2X_TABLE_B1::LEN[];
constexpr int DVB_S2X_TABLE_B1::POS[];
constexpr int DVB_S2X_TABLE_B2::DEG[];
constexpr int DVB_S2X_TABLE_B2::LEN[];
constexpr int DVB_S2X_TABLE_B2::POS[];
constexpr int DVB_S2X_TABLE_B3::DEG[];
constexpr int DVB_S2X_TABLE_B3::LEN[];
constexpr int DVB_S2X_TABLE_B3::POS[];
constexpr int DVB_S2X_TABLE_B4::DEG[];
constexpr int DVB_S2X_TABLE_B4::LEN[];
constexpr int DVB_S2X_TABLE_B4::POS[];
constexpr int DVB_S2X_TABLE_B5::DEG[];
constexpr int DVB_S2X_TABLE_B5::LEN[];
constexpr int DVB_S2X_TABLE_B5::POS[];
constexpr int DVB_S2X_TABLE_B6::DEG[];
constexpr int DVB_S2X_TABLE_B6::LEN[];
constexpr int DVB_S2X_TABLE_B6::POS[];
constexpr int DVB_S2X_TABLE_B7::DEG[];
constexpr int DVB_S2X_TABLE_B7::LEN[];
constexpr int DVB_S2X_TABLE_B7::POS[];
constexpr int DVB_S2X_TABLE_B8::DEG[];
constexpr int DVB_S2X_TABLE_B8::LEN[];
constexpr int DVB_S2X_TABLE_B8::POS[];
constexpr int DVB_S2X_TABLE_B9::DEG[];
constexpr int DVB_S2X_TABLE_B9::LEN[];
constexpr int DVB_S2X_TABLE_B9::POS[];
constexpr int DVB_S2X_TABLE_B10::DEG[];
constexpr int DVB_S2X_TABLE_B10::LEN[];
constexpr int DVB_S2X_TABLE_B10::POS[];
constexpr int DVB_S2X_TABLE_B11::DEG[];
constexpr int DVB_S2X_TABLE_B11::LEN[];
constexpr int DVB_S2X_TABLE_B11::POS[];
constexpr int DVB_S2X_TABLE_B12::DEG[];
constexpr int DVB_S2X_TABLE_B12::LEN[];
constexpr int DVB_S2X_TABLE_B12::POS[];
constexpr int DVB_S2X_TABLE_B13::DEG[];
constexpr int DVB_S2X_TABLE_B13::LEN[];
constexpr int DVB_S2X_TABLE_B13::POS[];
constexpr int DVB_S2X_TABLE_B14::DEG[];
constexpr int DVB_S2X_TABLE_B14::LEN[];
constexpr int DVB_S2X_TABLE_B14::POS[];
constexpr int DVB_S2X_TABLE_B15::DEG[];
constexpr int DVB_S2X_TABLE_B15::LEN[];
constexpr int DVB_S2X_TABLE_B15::POS[];
constexpr int DVB_S2X_TABLE_B16::DEG[];
constexpr int DVB_S2X_TABLE_B16::LEN[];
constexpr int DVB_S2X_TABLE_B16::POS[];
constexpr int DVB_S2X_TABLE_B17::DEG[];
constexpr int DVB_S2X_TABLE_B17::LEN[];
constexpr int DVB_S2X_TABLE_B17::POS[];
constexpr int DVB_S2X_TABLE_B18::DEG[];
constexpr int DVB_S2X_TABLE_B18::LEN[];
constexpr int DVB_S2X_TABLE_B18::POS[];
constexpr int DVB_S2X_TABLE_B19::DEG[];
constexpr int DVB_S2X_TABLE_B19::LEN[];
constexpr int DVB_S2X_TABLE_B19::POS[];
constexpr int DVB_S2X_TABLE_B20::DEG[];
constexpr int DVB_S2X_TABLE_B20::LEN[];
constexpr int DVB_S2X_TABLE_B20::POS[];
constexpr int DVB_S2X_TABLE_B21::DEG[];
constexpr int DVB_S2X_TABLE_B21::LEN[];
constexpr int DVB_S2X_TABLE_B21::POS[];
constexpr int DVB_S2X_TABLE_B22::DEG[];
constexpr int DVB_S2X_TABLE_B22::LEN[];
constexpr int DVB_S2X_TABLE_B22::POS[];
constexpr int DVB_S2X_TABLE_B23::DEG[];
constexpr int DVB_S2X_TABLE_B23::LEN[];
constexpr int DVB_S2X_TABLE_B23::POS[];
constexpr int DVB_S2X_TABLE_B24::DEG[];
constexpr int DVB_S2X_TABLE_B24::LEN[];
constexpr int DVB_S2X_TABLE_B24::POS[];
constexpr int DVB_S2_TABLE_C1::DEG[];
constexpr int DVB_S2_TABLE_C1::LEN[];
constexpr int DVB_S2_TABLE_C1::POS[];
constexpr int DVB_S2_TABLE_C2::DEG[];
constexpr int DVB_S2_TABLE_C2::LEN[];
constexpr int DVB_S2_TABLE_C2::POS[];
constexpr int DVB_S2_TABLE_C3::DEG[];
constexpr int DVB_S2_TABLE_C3::LEN[];
constexpr int DVB_S2_TABLE_C3::POS[];
constexpr int DVB_S2_TABLE_C4::DEG[];
constexpr int DVB_S2_TABLE_C4::LEN[];
constexpr int DVB_S2_TABLE_C4::POS[];
constexpr int DVB_S2_TABLE_C5::DEG[];
constexpr int DVB_S2_TABLE_C5::LEN[];
constexpr int DVB_S2_TABLE_C5::POS[];
constexpr int DVB_S2_TABLE_C6::DEG[];
constexpr int DVB_S2_TABLE_C6::LEN[];
constexpr int DVB_S2_TABLE_C6::POS[];
constexpr int DVB_S2_TABLE_C7::DEG[];
constexpr int DVB_S2_TABLE_C7::LEN[];
constexpr int DVB_S2_TABLE_C7::POS[];
constexpr int DVB_S2_TABLE_C8::DEG[];
constexpr int DVB_S2_TABLE_C8::LEN[];
constexpr int DVB_S2_TABLE_C8::POS[];
constexpr int DVB_S2_TABLE_C9::DEG[];
constexpr int DVB_S2_TABLE_C9::LEN[];
constexpr int DVB_S2_TABLE_C9::POS[];
constexpr int DVB_S2_TABLE_C10::DEG[];
constexpr int DVB_S2_TABLE_C10::LEN[];
constexpr int DVB_S2_TABLE_C10::POS[];
constexpr int DVB_S2X_TABLE_C1::DEG[];
constexpr int DVB_S2X_TABLE_C1::LEN[];
constexpr int DVB_S2X_TABLE_C1::POS[];
constexpr int DVB_S2X_TABLE_C2::DEG[];
constexpr int DVB_S2X_TABLE_C2::LEN[];
constexpr int DVB_S2X_TABLE_C2::POS[];
constexpr int DVB_S2X_TABLE_C3::DEG[];
constexpr int DVB_S2X_TABLE_C3::LEN[];
constexpr int DVB_S2X_TABLE_C3::POS[];
constexpr int DVB_S2X_TABLE_C4::DEG[];
constexpr int DVB_S2X_TABLE_C4::LEN[];
constexpr int DVB_S2X_TABLE_C4::POS[];
constexpr int DVB_S2X_TABLE_C5::DEG[];
constexpr int DVB_S2X_TABLE_C5::LEN[];
constexpr int DVB_S2X_TABLE_C5::POS[];
constexpr int DVB_S2X_TABLE_C6::DEG[];
constexpr int DVB_S2X_TABLE_C6::LEN[];
constexpr int DVB_S2X_TABLE_C6::POS[];
constexpr int DVB_S2X_TABLE_C7::DEG[];
constexpr int DVB_S2X_TABLE_C7::LEN[];
constexpr int DVB_S2X_TABLE_C7::POS[];
constexpr int DVB_S2X_TABLE_C8::DEG[];
constexpr int DVB_S2X_TABLE_C8::LEN[];
constexpr int DVB_S2X_TABLE_C8::POS[];
constexpr int DVB_S2X_TABLE_C9::DEG[];
constexpr int DVB_S2X_TABLE_C9::LEN[];
constexpr int DVB_S2X_TABLE_C9::POS[];
constexpr int DVB_S2X_TABLE_C10::DEG[];
constexpr int DVB_S2X_TABLE_C10::LEN[];
constexpr int DVB_S2X_TABLE_C10::POS[];
constexpr int DVB_T2_TABLE_A3::DEG[];
constexpr int DVB_T2_TABLE_A3::LEN[];
constexpr int DVB_T2_TABLE_A3::POS[];
constexpr int DVB_T2_TABLE_B3::DEG[];
constexpr int DVB_T2_TABLE_B3::LEN[];
constexpr int DVB_T2_TABLE_B3::POS[];
namespace gr {
namespace dvbs2rx {
ldpc_decoder_cb::sptr
ldpc_decoder_cb::make(dvb_standard_t standard,
dvb_framesize_t framesize,
dvb_code_rate_t rate,
dvb_constellation_t constellation,
dvb_outputmode_t outputmode,
dvb_infomode_t infomode)
{
return gnuradio::get_initial_sptr(new ldpc_decoder_cb_impl(
standard, framesize, rate, constellation, outputmode, infomode));
}
/*
* The private constructor
*/
ldpc_decoder_cb_impl::ldpc_decoder_cb_impl(dvb_standard_t standard,
dvb_framesize_t framesize,
dvb_code_rate_t rate,
dvb_constellation_t constellation,
dvb_outputmode_t outputmode,
dvb_infomode_t infomode)
: gr::block("ldpc_decoder_cb",
gr::io_signature::make(1, 1, sizeof(gr_complex)),
gr::io_signature::make(1, 1, sizeof(unsigned char)))
{
unsigned int rows;
if (framesize == FECFRAME_NORMAL) {
frame_size = FRAME_SIZE_NORMAL;
switch (rate) {
case C1_4:
nbch = 16200;
ldpc = new LDPC<DVB_S2_TABLE_B1>();
break;
case C1_3:
nbch = 21600;
ldpc = new LDPC<DVB_S2_TABLE_B2>();
break;
case C2_5:
nbch = 25920;
ldpc = new LDPC<DVB_S2_TABLE_B3>();
break;
case C1_2:
nbch = 32400;
q_val = 90;
ldpc = new LDPC<DVB_S2_TABLE_B4>();
break;
case C3_5:
nbch = 38880;
q_val = 72;
ldpc = new LDPC<DVB_S2_TABLE_B5>();
break;
case C2_3:
nbch = 43200;
q_val = 60;
if (standard == STANDARD_DVBS2) {
ldpc = new LDPC<DVB_S2_TABLE_B6>();
}
else {
ldpc = new LDPC<DVB_T2_TABLE_A3>();
}
break;
case C3_4:
nbch = 48600;
q_val = 45;
ldpc = new LDPC<DVB_S2_TABLE_B7>();
break;
case C4_5:
nbch = 51840;
q_val = 36;
ldpc = new LDPC<DVB_S2_TABLE_B8>();
break;
case C5_6:
nbch = 54000;
q_val = 30;
ldpc = new LDPC<DVB_S2_TABLE_B9>();
break;
case C8_9:
nbch = 57600;
ldpc = new LDPC<DVB_S2_TABLE_B10>();
break;
case C9_10:
nbch = 58320;
ldpc = new LDPC<DVB_S2_TABLE_B11>();
break;
case C2_9_VLSNR:
nbch = 14400;
ldpc = new LDPC<DVB_S2X_TABLE_B1>();
break;
case C13_45:
nbch = 18720;
ldpc = new LDPC<DVB_S2X_TABLE_B2>();
break;
case C9_20:
nbch = 29160;
ldpc = new LDPC<DVB_S2X_TABLE_B3>();
break;
case C90_180:
nbch = 32400;
ldpc = new LDPC<DVB_S2X_TABLE_B11>();
break;
case C96_180:
nbch = 34560;
ldpc = new LDPC<DVB_S2X_TABLE_B12>();
break;
case C11_20:
nbch = 35640;
ldpc = new LDPC<DVB_S2X_TABLE_B4>();
break;
case C100_180:
nbch = 36000;
ldpc = new LDPC<DVB_S2X_TABLE_B13>();
break;
case C104_180:
nbch = 37440;
ldpc = new LDPC<DVB_S2X_TABLE_B14>();
break;
case C26_45:
nbch = 37440;
ldpc = new LDPC<DVB_S2X_TABLE_B5>();
break;
case C18_30:
nbch = 38880;
ldpc = new LDPC<DVB_S2X_TABLE_B22>();
break;
case C28_45:
nbch = 40320;
ldpc = new LDPC<DVB_S2X_TABLE_B6>();
break;
case C23_36:
nbch = 41400;
ldpc = new LDPC<DVB_S2X_TABLE_B7>();
break;
case C116_180:
nbch = 41760;
ldpc = new LDPC<DVB_S2X_TABLE_B15>();
break;
case C20_30:
nbch = 43200;
ldpc = new LDPC<DVB_S2X_TABLE_B23>();
break;
case C124_180:
nbch = 44640;
ldpc = new LDPC<DVB_S2X_TABLE_B16>();
break;
case C25_36:
nbch = 45000;
ldpc = new LDPC<DVB_S2X_TABLE_B8>();
break;
case C128_180:
nbch = 46080;
ldpc = new LDPC<DVB_S2X_TABLE_B17>();
break;
case C13_18:
nbch = 46800;
ldpc = new LDPC<DVB_S2X_TABLE_B9>();
break;
case C132_180:
nbch = 47520;
ldpc = new LDPC<DVB_S2X_TABLE_B18>();
break;
case C22_30:
nbch = 47520;
ldpc = new LDPC<DVB_S2X_TABLE_B24>();
break;
case C135_180:
nbch = 48600;
ldpc = new LDPC<DVB_S2X_TABLE_B19>();
break;
case C140_180:
nbch = 50400;
ldpc = new LDPC<DVB_S2X_TABLE_B20>();
break;
case C7_9:
nbch = 50400;
ldpc = new LDPC<DVB_S2X_TABLE_B10>();
break;
case C154_180:
nbch = 55440;
ldpc = new LDPC<DVB_S2X_TABLE_B21>();
break;
default:
break;
}
}
else if (framesize == FECFRAME_SHORT) {
frame_size = FRAME_SIZE_SHORT;
switch (rate) {
case C1_4:
nbch = 3240;
ldpc = new LDPC<DVB_S2_TABLE_C1>();
break;
case C1_3:
nbch = 5400;
q_val = 30;
ldpc = new LDPC<DVB_S2_TABLE_C2>();
break;
case C2_5:
nbch = 6480;
q_val = 27;
ldpc = new LDPC<DVB_S2_TABLE_C3>();
break;
case C1_2:
nbch = 7200;
q_val = 25;
ldpc = new LDPC<DVB_S2_TABLE_C4>();
break;
case C3_5:
nbch = 9720;
q_val = 18;
if (standard == STANDARD_DVBS2) {
ldpc = new LDPC<DVB_S2_TABLE_C5>();
}
else {
ldpc = new LDPC<DVB_T2_TABLE_B3>();
}
break;
case C2_3:
nbch = 10800;
q_val = 15;
ldpc = new LDPC<DVB_S2_TABLE_C6>();
break;
case C3_4:
nbch = 11880;
q_val = 12;
ldpc = new LDPC<DVB_S2_TABLE_C7>();
break;
case C4_5:
nbch = 12600;
q_val = 10;
ldpc = new LDPC<DVB_S2_TABLE_C8>();
break;
case C5_6:
nbch = 13320;
q_val = 8;
ldpc = new LDPC<DVB_S2_TABLE_C9>();
break;
case C8_9:
nbch = 14400;
ldpc = new LDPC<DVB_S2_TABLE_C10>();
break;
case C11_45:
nbch = 3960;
ldpc = new LDPC<DVB_S2X_TABLE_C1>();
break;
case C4_15:
nbch = 4320;
ldpc = new LDPC<DVB_S2X_TABLE_C2>();
break;
case C14_45:
nbch = 5040;
ldpc = new LDPC<DVB_S2X_TABLE_C3>();
break;
case C7_15:
nbch = 7560;
ldpc = new LDPC<DVB_S2X_TABLE_C4>();
break;
case C8_15:
nbch = 8640;
ldpc = new LDPC<DVB_S2X_TABLE_C5>();
break;
case C26_45:
nbch = 9360;
ldpc = new LDPC<DVB_S2X_TABLE_C6>();
break;
case C32_45:
nbch = 11520;
ldpc = new LDPC<DVB_S2X_TABLE_C7>();
break;
case C1_5_VLSNR_SF2:
nbch = 2680;
ldpc = new LDPC<DVB_S2_TABLE_C1>();
break;
case C11_45_VLSNR_SF2:
nbch = 3960;
ldpc = new LDPC<DVB_S2X_TABLE_C1>();
break;
case C1_5_VLSNR:
nbch = 3240;
ldpc = new LDPC<DVB_S2_TABLE_C1>();
break;
case C4_15_VLSNR:
nbch = 4320;
ldpc = new LDPC<DVB_S2X_TABLE_C2>();
break;
case C1_3_VLSNR:
nbch = 5400;
ldpc = new LDPC<DVB_S2_TABLE_C2>();
break;
default:
nbch = 0;
break;
}
}
else {
frame_size = FRAME_SIZE_MEDIUM;
switch (rate) {
case C1_5_MEDIUM:
nbch = 5840;
ldpc = new LDPC<DVB_S2X_TABLE_C8>();
break;
case C11_45_MEDIUM:
nbch = 7920;
ldpc = new LDPC<DVB_S2X_TABLE_C9>();
break;
case C1_3_MEDIUM:
nbch = 10800;
ldpc = new LDPC<DVB_S2X_TABLE_C10>();
break;
default:
nbch = 0;
break;
}
}
switch (constellation) {
case MOD_QPSK:
mod = new PhaseShiftKeying<4, gr_complex, int8_t>();
break;
case MOD_8PSK:
mod = new PhaseShiftKeying<8, gr_complex, int8_t>();
rows = ldpc->code_len() / mod->bits();
/* 210 */
if (rate == C3_5) {
rowaddr0 = rows * 2;
rowaddr1 = rows;
rowaddr2 = 0;
}
/* 102 */
else if (rate == C25_36 || rate == C13_18 || rate == C7_15 || rate == C8_15 ||
rate == C26_45) {
rowaddr0 = rows;
rowaddr1 = 0;
rowaddr2 = rows * 2;
}
/* 012 */
else {
rowaddr0 = 0;
rowaddr1 = rows;
rowaddr2 = rows * 2;
}
break;
case MOD_16QAM:
mod = new QuadratureAmplitudeModulation<16, gr_complex, int8_t>();
break;
case MOD_64QAM:
mod = new QuadratureAmplitudeModulation<64, gr_complex, int8_t>();
break;
case MOD_256QAM:
mod = new QuadratureAmplitudeModulation<256, gr_complex, int8_t>();
break;
default:
break;
}
frame = 0;
chunk = 0;
total_trials = 0;
total_snr = 0.0;
signal_constellation = constellation;
code_rate = rate;
dvb_standard = standard;
output_mode = outputmode;
info_mode = infomode;
soft = new int8_t[ldpc->code_len() * SIZEOF_SIMD];
dint = new int8_t[ldpc->code_len() * SIZEOF_SIMD];
tempu = new int8_t[ldpc->code_len()];
tempv = new int8_t[ldpc->code_len()];
aligned_buffer =
aligned_alloc(sizeof(simd_type), sizeof(simd_type) * ldpc->code_len());
decode.init(ldpc);
generate_interleave_lookup();
generate_deinterleave_lookup();
if (outputmode == OM_MESSAGE) {
set_output_multiple(nbch * SIZEOF_SIMD);
}
else {
set_output_multiple(frame_size * SIZEOF_SIMD);
}
}
inline void
ldpc_decoder_cb_impl::interleave_parity_bits(int *tempu, const int *&in)
{
for (unsigned int k = 0; k < nbch; k++) {
tempu[k] = *in++;
}
for (unsigned int t = 0; t < q_val; t++) {
for (int s = 0; s < 360; s++) {
tempu[nbch + (360 * t) + s] = in[(q_val * s) + t];
}
}
in = in + (q_val * 360);
}
inline void
ldpc_decoder_cb_impl::twist_interleave_columns(
int *tempv, int *tempu, int rows, int mod, const int *twist)
{
int index = 0, offset;
for (int col = 0; col < mod; col++) {
offset = twist[col];
for (int row = 0; row < rows; row++) {
tempv[offset + (rows * col)] = tempu[index++];
offset++;
if (offset == rows) {
offset = 0;
}
}
}
}
inline void
ldpc_decoder_cb_impl::twist_deinterleave_columns(
int *tempv, int *tempu, int rows, int mod, const int *twist)
{
int index = 0, offset;
for (int col = 0; col < mod; col++) {
offset = twist[col];
for (int row = 0; row < rows; row++) {
tempv[index++] = tempu[offset + (rows * col)];
offset++;
if (offset == rows) {
offset = 0;
}
}
}
}
void
ldpc_decoder_cb_impl::generate_interleave_lookup()
{
int rows, index = 0;
int tempv[FRAME_SIZE_NORMAL];
int tempu[FRAME_SIZE_NORMAL];
const int *twist;
const int *c1, *c2, *c3, *c4, *c5, *c6, *c7, *c8;
const int *c9, *c10, *c11, *c12, *c13, *c14, *c15, *c16;
const int *in = &interleave_lookup_table[0];
const int MOD_BITS = mod->bits();
for (int i = 0; i < FRAME_SIZE_NORMAL; i++) {
interleave_lookup_table[i] = i;
}
switch (signal_constellation) {
case MOD_QPSK:
break;
case MOD_16QAM:
rows = frame_size / (MOD_BITS * 2);
if (frame_size == FRAME_SIZE_NORMAL) {
twist = &twist16n[0];
}
else {
twist = &twist16s[0];
}
interleave_parity_bits(tempu, in);
c1 = &tempv[0];
c2 = &tempv[rows];
c3 = &tempv[rows * 2];
c4 = &tempv[rows * 3];
c5 = &tempv[rows * 4];
c6 = &tempv[rows * 5];
c7 = &tempv[rows * 6];
c8 = &tempv[rows * 7];
twist_interleave_columns(tempv, tempu, rows, (MOD_BITS * 2), twist);
for (int j = 0; j < rows; j++) {
tempu[index++] = c1[j];
tempu[index++] = c2[j];
tempu[index++] = c3[j];
tempu[index++] = c4[j];
tempu[index++] = c5[j];
tempu[index++] = c6[j];
tempu[index++] = c7[j];
tempu[index++] = c8[j];
}
break;
case MOD_64QAM:
rows = frame_size / (MOD_BITS * 2);
if (frame_size == FRAME_SIZE_NORMAL) {
twist = twist64n;
}
else {
twist = twist64s;
}
interleave_parity_bits(tempu, in);
c1 = &tempv[0];
c2 = &tempv[rows];
c3 = &tempv[rows * 2];
c4 = &tempv[rows * 3];
c5 = &tempv[rows * 4];
c6 = &tempv[rows * 5];
c7 = &tempv[rows * 6];
c8 = &tempv[rows * 7];
c9 = &tempv[rows * 8];
c10 = &tempv[rows * 9];
c11 = &tempv[rows * 10];
c12 = &tempv[rows * 11];
twist_interleave_columns(tempv, tempu, rows, (MOD_BITS * 2), twist);
for (int j = 0; j < rows; j++) {
tempu[index++] = c1[j];
tempu[index++] = c2[j];
tempu[index++] = c3[j];
tempu[index++] = c4[j];
tempu[index++] = c5[j];
tempu[index++] = c6[j];
tempu[index++] = c7[j];
tempu[index++] = c8[j];
tempu[index++] = c9[j];
tempu[index++] = c10[j];
tempu[index++] = c11[j];
tempu[index++] = c12[j];
}
break;
case MOD_256QAM:
if (frame_size == FRAME_SIZE_NORMAL) {
rows = frame_size / (MOD_BITS * 2);
interleave_parity_bits(tempu, in);
c1 = &tempv[0];
c2 = &tempv[rows];
c3 = &tempv[rows * 2];
c4 = &tempv[rows * 3];
c5 = &tempv[rows * 4];
c6 = &tempv[rows * 5];
c7 = &tempv[rows * 6];
c8 = &tempv[rows * 7];
c9 = &tempv[rows * 8];
c10 = &tempv[rows * 9];
c11 = &tempv[rows * 10];
c12 = &tempv[rows * 11];
c13 = &tempv[rows * 12];
c14 = &tempv[rows * 13];
c15 = &tempv[rows * 14];
c16 = &tempv[rows * 15];
twist_interleave_columns(tempv, tempu, rows, (MOD_BITS * 2), twist256n);
for (int j = 0; j < rows; j++) {
tempu[index++] = c1[j];
tempu[index++] = c2[j];
tempu[index++] = c3[j];
tempu[index++] = c4[j];
tempu[index++] = c5[j];
tempu[index++] = c6[j];
tempu[index++] = c7[j];
tempu[index++] = c8[j];
tempu[index++] = c9[j];
tempu[index++] = c10[j];
tempu[index++] = c11[j];
tempu[index++] = c12[j];
tempu[index++] = c13[j];
tempu[index++] = c14[j];
tempu[index++] = c15[j];
tempu[index++] = c16[j];
}
}
else {
rows = frame_size / MOD_BITS;
interleave_parity_bits(tempu, in);
c1 = &tempv[0];
c2 = &tempv[rows];
c3 = &tempv[rows * 2];
c4 = &tempv[rows * 3];
c5 = &tempv[rows * 4];
c6 = &tempv[rows * 5];
c7 = &tempv[rows * 6];
c8 = &tempv[rows * 7];
twist_interleave_columns(tempv, tempu, rows, MOD_BITS, twist256s);
for (int j = 0; j < rows; j++) {
tempu[index++] = c1[j];
tempu[index++] = c2[j];
tempu[index++] = c3[j];
tempu[index++] = c4[j];
tempu[index++] = c5[j];
tempu[index++] = c6[j];
tempu[index++] = c7[j];
tempu[index++] = c8[j];
}
}
break;
}
memcpy(interleave_lookup_table, tempu, frame_size * sizeof(int));
}
void
ldpc_decoder_cb_impl::generate_deinterleave_lookup()
{
int rows, index = 0;
int tempv[FRAME_SIZE_NORMAL];
int tempu[FRAME_SIZE_NORMAL];
const int *twist;
int *c1, *c2, *c3, *c4, *c5, *c6, *c7, *c8;
int *c9, *c10, *c11, *c12, *c13, *c14, *c15, *c16;
const int *in = &deinterleave_lookup_table[0];
const int MOD_BITS = mod->bits();
for (int i = 0; i < FRAME_SIZE_NORMAL; i++) {
deinterleave_lookup_table[i] = i;
}
switch (signal_constellation) {
case MOD_QPSK:
break;
case MOD_16QAM:
rows = frame_size / (MOD_BITS * 2);
if (frame_size == FRAME_SIZE_NORMAL) {
twist = &twist16n[0];
}
else {
twist = &twist16s[0];
}
c1 = &tempu[0];
c2 = &tempu[rows];
c3 = &tempu[rows * 2];
c4 = &tempu[rows * 3];
c5 = &tempu[rows * 4];
c6 = &tempu[rows * 5];
c7 = &tempu[rows * 6];
c8 = &tempu[rows * 7];
for (int j = 0; j < rows; j++) {
c1[j] = in[index++];
c2[j] = in[index++];
c3[j] = in[index++];
c4[j] = in[index++];
c5[j] = in[index++];
c6[j] = in[index++];
c7[j] = in[index++];
c8[j] = in[index++];
}
twist_deinterleave_columns(tempv, tempu, rows, (MOD_BITS * 2), twist);
break;
case MOD_64QAM:
rows = frame_size / (MOD_BITS * 2);
if (frame_size == FRAME_SIZE_NORMAL) {
twist = twist64n;
}
else {
twist = twist64s;
}
c1 = &tempu[0];
c2 = &tempu[rows];
c3 = &tempu[rows * 2];
c4 = &tempu[rows * 3];
c5 = &tempu[rows * 4];
c6 = &tempu[rows * 5];
c7 = &tempu[rows * 6];
c8 = &tempu[rows * 7];
c9 = &tempu[rows * 8];
c10 = &tempu[rows * 9];
c11 = &tempu[rows * 10];
c12 = &tempu[rows * 11];
for (int j = 0; j < rows; j++) {
c1[j] = in[index++];
c2[j] = in[index++];
c3[j] = in[index++];
c4[j] = in[index++];
c5[j] = in[index++];
c6[j] = in[index++];
c7[j] = in[index++];
c8[j] = in[index++];
c9[j] = in[index++];
c10[j] = in[index++];
c11[j] = in[index++];
c12[j] = in[index++];
}
twist_deinterleave_columns(tempv, tempu, rows, (MOD_BITS * 2), twist);
break;
case MOD_256QAM:
if (frame_size == FRAME_SIZE_NORMAL) {
rows = frame_size / (MOD_BITS * 2);
c1 = &tempu[0];
c2 = &tempu[rows];
c3 = &tempu[rows * 2];
c4 = &tempu[rows * 3];
c5 = &tempu[rows * 4];
c6 = &tempu[rows * 5];
c7 = &tempu[rows * 6];
c8 = &tempu[rows * 7];
c9 = &tempu[rows * 8];
c10 = &tempu[rows * 9];
c11 = &tempu[rows * 10];
c12 = &tempu[rows * 11];
c13 = &tempu[rows * 12];
c14 = &tempu[rows * 13];
c15 = &tempu[rows * 14];
c16 = &tempu[rows * 15];
for (int j = 0; j < rows; j++) {
c1[j] = in[index++];
c2[j] = in[index++];
c3[j] = in[index++];
c4[j] = in[index++];
c5[j] = in[index++];
c6[j] = in[index++];
c7[j] = in[index++];
c8[j] = in[index++];
c9[j] = in[index++];
c10[j] = in[index++];
c11[j] = in[index++];
c12[j] = in[index++];
c13[j] = in[index++];
c14[j] = in[index++];
c15[j] = in[index++];
c16[j] = in[index++];
}
twist_deinterleave_columns(tempv, tempu, rows, (MOD_BITS * 2), twist256n);
}
else {
rows = frame_size / MOD_BITS;
c1 = &tempu[0];
c2 = &tempu[rows];
c3 = &tempu[rows * 2];
c4 = &tempu[rows * 3];
c5 = &tempu[rows * 4];
c6 = &tempu[rows * 5];
c7 = &tempu[rows * 6];
c8 = &tempu[rows * 7];
for (int j = 0; j < rows; j++) {
c1[j] = in[index++];
c2[j] = in[index++];
c3[j] = in[index++];
c4[j] = in[index++];
c5[j] = in[index++];
c6[j] = in[index++];
c7[j] = in[index++];
c8[j] = in[index++];
}
twist_deinterleave_columns(tempv, tempu, rows, MOD_BITS, twist256s);
}
break;
}
memcpy(deinterleave_lookup_table, tempv, frame_size * sizeof(int));
}
/*
* Our virtual destructor.
*/
ldpc_decoder_cb_impl::~ldpc_decoder_cb_impl()
{
free(aligned_buffer);
delete[] tempv;
delete[] tempu;
delete[] dint;
delete[] soft;
delete mod;