From 2e9fc9db64a722d543a26421d6bafed297696c2d Mon Sep 17 00:00:00 2001 From: f4exb Date: Thu, 28 Mar 2024 15:15:48 +0100 Subject: [PATCH] FT8: add encoding support to library and added more tests --- ft8/CMakeLists.txt | 9 +- ft8/arrays.cpp | 390 ++++++++++++++++++++ ft8/arrays.h | 303 ++------------- ft8/ft8.cpp | 44 ++- ft8/ft8.h | 15 +- ft8/ldpcgen.py | 104 ++++++ ft8/libldpc.cpp | 35 +- ft8/libldpc.h | 16 +- ft8/osd.cpp | 352 +++++++++--------- ft8/pack0.cpp | 51 +++ ft8/pack0.h | 28 ++ ft8/{unpack.cpp => packing.cpp} | 220 ++++++++++- ft8/{unpack.h => packing.h} | 8 +- plugins/channelrx/demodft8/ft8demodworker.h | 2 +- sdrbench/CMakeLists.txt | 1 + sdrbench/mainbench.cpp | 2 + sdrbench/mainbench.h | 1 + sdrbench/parserbench.cpp | 4 +- sdrbench/parserbench.h | 3 +- sdrbench/test_ft8.cpp | 2 +- sdrbench/test_ft8protocols.cpp | 233 ++++++++++++ 21 files changed, 1330 insertions(+), 493 deletions(-) create mode 100644 ft8/arrays.cpp create mode 100755 ft8/ldpcgen.py create mode 100644 ft8/pack0.cpp create mode 100644 ft8/pack0.h rename ft8/{unpack.cpp => packing.cpp} (75%) rename ft8/{unpack.h => packing.h} (91%) create mode 100644 sdrbench/test_ft8protocols.cpp diff --git a/ft8/CMakeLists.txt b/ft8/CMakeLists.txt index 83d58952a..75d62d0f7 100644 --- a/ft8/CMakeLists.txt +++ b/ft8/CMakeLists.txt @@ -1,6 +1,7 @@ project(ft8) set(ft8_SOURCES + arrays.cpp fft.cpp fftbuffers.cpp ft8.cpp @@ -8,12 +9,14 @@ set(ft8_SOURCES ft8plans.cpp libldpc.cpp osd.cpp - unpack.cpp + packing.cpp + pack0.cpp unpack0.cpp util.cpp ) set(ft8_HEADERS + arrays.h fft.h fftbuffers.h ft8.h @@ -21,7 +24,9 @@ set(ft8_HEADERS ft8plans.h libldpc.h osd.h - unpack.h + packing.h + pack0.h + unpack0.h util.h ) diff --git a/ft8/arrays.cpp b/ft8/arrays.cpp new file mode 100644 index 000000000..372e7569f --- /dev/null +++ b/ft8/arrays.cpp @@ -0,0 +1,390 @@ +/////////////////////////////////////////////////////////////////////////////////// +// Copyright (C) 2023 Edouard Griffiths, F4EXB // +// // +// This is the code from ft8mon: https://github.com/rtmrtmrtmrtm/ft8mon // +// reformatted and adapted to Qt and SDRangel context // +// // +// This program 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 as version 3 of the License, or // +// (at your option) any later version. // +// // +// This program 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 V3 for more details. // +// // +// You should have received a copy of the GNU General Public License // +// along with this program. If not, see . // +/////////////////////////////////////////////////////////////////////////////////// + +#include "arrays.h" + +namespace FT8 { + +// +// this is the LDPC(174,91) parity check matrix. +// each row describes one parity check. +// 83 rows. +// each number is an index into the codeword (1-origin). +// the codeword bits mentioned in each row must xor to zero. +// From WSJT-X's ldpc_174_91_c_reordered_parity.f90 +// +const int Arrays::Nm[][7] = { + { 4, 31, 59, 91, 92, 96, 153 }, + { 5, 32, 60, 93, 115, 146, 0 }, + { 6, 24, 61, 94, 122, 151, 0 }, + { 7, 33, 62, 95, 96, 143, 0 }, + { 8, 25, 63, 83, 93, 96, 148 }, + { 6, 32, 64, 97, 126, 138, 0 }, + { 5, 34, 65, 78, 98, 107, 154 }, + { 9, 35, 66, 99, 139, 146, 0 }, + { 10, 36, 67, 100, 107, 126, 0 }, + { 11, 37, 67, 87, 101, 139, 158 }, + { 12, 38, 68, 102, 105, 155, 0 }, + { 13, 39, 69, 103, 149, 162, 0 }, + { 8, 40, 70, 82, 104, 114, 145 }, + { 14, 41, 71, 88, 102, 123, 156 }, + { 15, 42, 59, 106, 123, 159, 0 }, + { 1, 33, 72, 106, 107, 157, 0 }, + { 16, 43, 73, 108, 141, 160, 0 }, + { 17, 37, 74, 81, 109, 131, 154 }, + { 11, 44, 75, 110, 121, 166, 0 }, + { 45, 55, 64, 111, 130, 161, 173 }, + { 8, 46, 71, 112, 119, 166, 0 }, + { 18, 36, 76, 89, 113, 114, 143 }, + { 19, 38, 77, 104, 116, 163, 0 }, + { 20, 47, 70, 92, 138, 165, 0 }, + { 2, 48, 74, 113, 128, 160, 0 }, + { 21, 45, 78, 83, 117, 121, 151 }, + { 22, 47, 58, 118, 127, 164, 0 }, + { 16, 39, 62, 112, 134, 158, 0 }, + { 23, 43, 79, 120, 131, 145, 0 }, + { 19, 35, 59, 73, 110, 125, 161 }, + { 20, 36, 63, 94, 136, 161, 0 }, + { 14, 31, 79, 98, 132, 164, 0 }, + { 3, 44, 80, 124, 127, 169, 0 }, + { 19, 46, 81, 117, 135, 167, 0 }, + { 7, 49, 58, 90, 100, 105, 168 }, + { 12, 50, 61, 118, 119, 144, 0 }, + { 13, 51, 64, 114, 118, 157, 0 }, + { 24, 52, 76, 129, 148, 149, 0 }, + { 25, 53, 69, 90, 101, 130, 156 }, + { 20, 46, 65, 80, 120, 140, 170 }, + { 21, 54, 77, 100, 140, 171, 0 }, + { 35, 82, 133, 142, 171, 174, 0 }, + { 14, 30, 83, 113, 125, 170, 0 }, + { 4, 29, 68, 120, 134, 173, 0 }, + { 1, 4, 52, 57, 86, 136, 152 }, + { 26, 51, 56, 91, 122, 137, 168 }, + { 52, 84, 110, 115, 145, 168, 0 }, + { 7, 50, 81, 99, 132, 173, 0 }, + { 23, 55, 67, 95, 172, 174, 0 }, + { 26, 41, 77, 109, 141, 148, 0 }, + { 2, 27, 41, 61, 62, 115, 133 }, + { 27, 40, 56, 124, 125, 126, 0 }, + { 18, 49, 55, 124, 141, 167, 0 }, + { 6, 33, 85, 108, 116, 156, 0 }, + { 28, 48, 70, 85, 105, 129, 158 }, + { 9, 54, 63, 131, 147, 155, 0 }, + { 22, 53, 68, 109, 121, 174, 0 }, + { 3, 13, 48, 78, 95, 123, 0 }, + { 31, 69, 133, 150, 155, 169, 0 }, + { 12, 43, 66, 89, 97, 135, 159 }, + { 5, 39, 75, 102, 136, 167, 0 }, + { 2, 54, 86, 101, 135, 164, 0 }, + { 15, 56, 87, 108, 119, 171, 0 }, + { 10, 44, 82, 91, 111, 144, 149 }, + { 23, 34, 71, 94, 127, 153, 0 }, + { 11, 49, 88, 92, 142, 157, 0 }, + { 29, 34, 87, 97, 147, 162, 0 }, + { 30, 50, 60, 86, 137, 142, 162 }, + { 10, 53, 66, 84, 112, 128, 165 }, + { 22, 57, 85, 93, 140, 159, 0 }, + { 28, 32, 72, 103, 132, 166, 0 }, + { 28, 29, 84, 88, 117, 143, 150 }, + { 1, 26, 45, 80, 128, 147, 0 }, + { 17, 27, 89, 103, 116, 153, 0 }, + { 51, 57, 98, 163, 165, 172, 0 }, + { 21, 37, 73, 138, 152, 169, 0 }, + { 16, 47, 76, 130, 137, 154, 0 }, + { 3, 24, 30, 72, 104, 139, 0 }, + { 9, 40, 90, 106, 134, 151, 0 }, + { 15, 58, 60, 74, 111, 150, 163 }, + { 18, 42, 79, 144, 146, 152, 0 }, + { 25, 38, 65, 99, 122, 160, 0 }, + { 17, 42, 75, 129, 170, 172, 0 }, +}; + +// Mn from WSJT-X's ldpc_174_91_c_reordered_parity.f90 +// each of the 174 rows corresponds to a codeword bit. +// the numbers indicate which three parity +// checks (rows in Nm) refer to the codeword bit. +// 1-origin. +const int Arrays::Mn[][3] = { + { 16, 45, 73 }, + { 25, 51, 62 }, + { 33, 58, 78 }, + { 1, 44, 45 }, + { 2, 7, 61 }, + { 3, 6, 54 }, + { 4, 35, 48 }, + { 5, 13, 21 }, + { 8, 56, 79 }, + { 9, 64, 69 }, + { 10, 19, 66 }, + { 11, 36, 60 }, + { 12, 37, 58 }, + { 14, 32, 43 }, + { 15, 63, 80 }, + { 17, 28, 77 }, + { 18, 74, 83 }, + { 22, 53, 81 }, + { 23, 30, 34 }, + { 24, 31, 40 }, + { 26, 41, 76 }, + { 27, 57, 70 }, + { 29, 49, 65 }, + { 3, 38, 78 }, + { 5, 39, 82 }, + { 46, 50, 73 }, + { 51, 52, 74 }, + { 55, 71, 72 }, + { 44, 67, 72 }, + { 43, 68, 78 }, + { 1, 32, 59 }, + { 2, 6, 71 }, + { 4, 16, 54 }, + { 7, 65, 67 }, + { 8, 30, 42 }, + { 9, 22, 31 }, + { 10, 18, 76 }, + { 11, 23, 82 }, + { 12, 28, 61 }, + { 13, 52, 79 }, + { 14, 50, 51 }, + { 15, 81, 83 }, + { 17, 29, 60 }, + { 19, 33, 64 }, + { 20, 26, 73 }, + { 21, 34, 40 }, + { 24, 27, 77 }, + { 25, 55, 58 }, + { 35, 53, 66 }, + { 36, 48, 68 }, + { 37, 46, 75 }, + { 38, 45, 47 }, + { 39, 57, 69 }, + { 41, 56, 62 }, + { 20, 49, 53 }, + { 46, 52, 63 }, + { 45, 70, 75 }, + { 27, 35, 80 }, + { 1, 15, 30 }, + { 2, 68, 80 }, + { 3, 36, 51 }, + { 4, 28, 51 }, + { 5, 31, 56 }, + { 6, 20, 37 }, + { 7, 40, 82 }, + { 8, 60, 69 }, + { 9, 10, 49 }, + { 11, 44, 57 }, + { 12, 39, 59 }, + { 13, 24, 55 }, + { 14, 21, 65 }, + { 16, 71, 78 }, + { 17, 30, 76 }, + { 18, 25, 80 }, + { 19, 61, 83 }, + { 22, 38, 77 }, + { 23, 41, 50 }, + { 7, 26, 58 }, + { 29, 32, 81 }, + { 33, 40, 73 }, + { 18, 34, 48 }, + { 13, 42, 64 }, + { 5, 26, 43 }, + { 47, 69, 72 }, + { 54, 55, 70 }, + { 45, 62, 68 }, + { 10, 63, 67 }, + { 14, 66, 72 }, + { 22, 60, 74 }, + { 35, 39, 79 }, + { 1, 46, 64 }, + { 1, 24, 66 }, + { 2, 5, 70 }, + { 3, 31, 65 }, + { 4, 49, 58 }, + { 1, 4, 5 }, + { 6, 60, 67 }, + { 7, 32, 75 }, + { 8, 48, 82 }, + { 9, 35, 41 }, + { 10, 39, 62 }, + { 11, 14, 61 }, + { 12, 71, 74 }, + { 13, 23, 78 }, + { 11, 35, 55 }, + { 15, 16, 79 }, + { 7, 9, 16 }, + { 17, 54, 63 }, + { 18, 50, 57 }, + { 19, 30, 47 }, + { 20, 64, 80 }, + { 21, 28, 69 }, + { 22, 25, 43 }, + { 13, 22, 37 }, + { 2, 47, 51 }, + { 23, 54, 74 }, + { 26, 34, 72 }, + { 27, 36, 37 }, + { 21, 36, 63 }, + { 29, 40, 44 }, + { 19, 26, 57 }, + { 3, 46, 82 }, + { 14, 15, 58 }, + { 33, 52, 53 }, + { 30, 43, 52 }, + { 6, 9, 52 }, + { 27, 33, 65 }, + { 25, 69, 73 }, + { 38, 55, 83 }, + { 20, 39, 77 }, + { 18, 29, 56 }, + { 32, 48, 71 }, + { 42, 51, 59 }, + { 28, 44, 79 }, + { 34, 60, 62 }, + { 31, 45, 61 }, + { 46, 68, 77 }, + { 6, 24, 76 }, + { 8, 10, 78 }, + { 40, 41, 70 }, + { 17, 50, 53 }, + { 42, 66, 68 }, + { 4, 22, 72 }, + { 36, 64, 81 }, + { 13, 29, 47 }, + { 2, 8, 81 }, + { 56, 67, 73 }, + { 5, 38, 50 }, + { 12, 38, 64 }, + { 59, 72, 80 }, + { 3, 26, 79 }, + { 45, 76, 81 }, + { 1, 65, 74 }, + { 7, 18, 77 }, + { 11, 56, 59 }, + { 14, 39, 54 }, + { 16, 37, 66 }, + { 10, 28, 55 }, + { 15, 60, 70 }, + { 17, 25, 82 }, + { 20, 30, 31 }, + { 12, 67, 68 }, + { 23, 75, 80 }, + { 27, 32, 62 }, + { 24, 69, 75 }, + { 19, 21, 71 }, + { 34, 53, 61 }, + { 35, 46, 47 }, + { 33, 59, 76 }, + { 40, 43, 83 }, + { 41, 42, 63 }, + { 49, 75, 83 }, + { 20, 44, 48 }, + { 42, 49, 57 }, +}; + +// This is the LDPC(174, 91) generator matrix +// It has 83 rows and 91 columns (zero padded on the right thus 12 bytes) +// From WSJT-X's ldpc_174_91_c_generator.f90 +const int Arrays::Gm[][12] = { + { 0x83, 0x29, 0xce, 0x11, 0xbf, 0x31, 0xea, 0xf5, 0x09, 0xf2, 0x7f, 0xc0 }, + { 0x76, 0x1c, 0x26, 0x4e, 0x25, 0xc2, 0x59, 0x33, 0x54, 0x93, 0x13, 0x20 }, + { 0xdc, 0x26, 0x59, 0x02, 0xfb, 0x27, 0x7c, 0x64, 0x10, 0xa1, 0xbd, 0xc0 }, + { 0x1b, 0x3f, 0x41, 0x78, 0x58, 0xcd, 0x2d, 0xd3, 0x3e, 0xc7, 0xf6, 0x20 }, + { 0x09, 0xfd, 0xa4, 0xfe, 0xe0, 0x41, 0x95, 0xfd, 0x03, 0x47, 0x83, 0xa0 }, + { 0x07, 0x7c, 0xcc, 0xc1, 0x1b, 0x88, 0x73, 0xed, 0x5c, 0x3d, 0x48, 0xa0 }, + { 0x29, 0xb6, 0x2a, 0xfe, 0x3c, 0xa0, 0x36, 0xf4, 0xfe, 0x1a, 0x9d, 0xa0 }, + { 0x60, 0x54, 0xfa, 0xf5, 0xf3, 0x5d, 0x96, 0xd3, 0xb0, 0xc8, 0xc3, 0xe0 }, + { 0xe2, 0x07, 0x98, 0xe4, 0x31, 0x0e, 0xed, 0x27, 0x88, 0x4a, 0xe9, 0x00 }, + { 0x77, 0x5c, 0x9c, 0x08, 0xe8, 0x0e, 0x26, 0xdd, 0xae, 0x56, 0x31, 0x80 }, + { 0xb0, 0xb8, 0x11, 0x02, 0x8c, 0x2b, 0xf9, 0x97, 0x21, 0x34, 0x87, 0xc0 }, + { 0x18, 0xa0, 0xc9, 0x23, 0x1f, 0xc6, 0x0a, 0xdf, 0x5c, 0x5e, 0xa3, 0x20 }, + { 0x76, 0x47, 0x1e, 0x83, 0x02, 0xa0, 0x72, 0x1e, 0x01, 0xb1, 0x2b, 0x80 }, + { 0xff, 0xbc, 0xcb, 0x80, 0xca, 0x83, 0x41, 0xfa, 0xfb, 0x47, 0xb2, 0xe0 }, + { 0x66, 0xa7, 0x2a, 0x15, 0x8f, 0x93, 0x25, 0xa2, 0xbf, 0x67, 0x17, 0x00 }, + { 0xc4, 0x24, 0x36, 0x89, 0xfe, 0x85, 0xb1, 0xc5, 0x13, 0x63, 0xa1, 0x80 }, + { 0x0d, 0xff, 0x73, 0x94, 0x14, 0xd1, 0xa1, 0xb3, 0x4b, 0x1c, 0x27, 0x00 }, + { 0x15, 0xb4, 0x88, 0x30, 0x63, 0x6c, 0x8b, 0x99, 0x89, 0x49, 0x72, 0xe0 }, + { 0x29, 0xa8, 0x9c, 0x0d, 0x3d, 0xe8, 0x1d, 0x66, 0x54, 0x89, 0xb0, 0xe0 }, + { 0x4f, 0x12, 0x6f, 0x37, 0xfa, 0x51, 0xcb, 0xe6, 0x1b, 0xd6, 0xb9, 0x40 }, + { 0x99, 0xc4, 0x72, 0x39, 0xd0, 0xd9, 0x7d, 0x3c, 0x84, 0xe0, 0x94, 0x00 }, + { 0x19, 0x19, 0xb7, 0x51, 0x19, 0x76, 0x56, 0x21, 0xbb, 0x4f, 0x1e, 0x80 }, + { 0x09, 0xdb, 0x12, 0xd7, 0x31, 0xfa, 0xee, 0x0b, 0x86, 0xdf, 0x6b, 0x80 }, + { 0x48, 0x8f, 0xc3, 0x3d, 0xf4, 0x3f, 0xbd, 0xee, 0xa4, 0xea, 0xfb, 0x40 }, + { 0x82, 0x74, 0x23, 0xee, 0x40, 0xb6, 0x75, 0xf7, 0x56, 0xeb, 0x5f, 0xe0 }, + { 0xab, 0xe1, 0x97, 0xc4, 0x84, 0xcb, 0x74, 0x75, 0x71, 0x44, 0xa9, 0xa0 }, + { 0x2b, 0x50, 0x0e, 0x4b, 0xc0, 0xec, 0x5a, 0x6d, 0x2b, 0xdb, 0xdd, 0x00 }, + { 0xc4, 0x74, 0xaa, 0x53, 0xd7, 0x02, 0x18, 0x76, 0x16, 0x69, 0x36, 0x00 }, + { 0x8e, 0xba, 0x1a, 0x13, 0xdb, 0x33, 0x90, 0xbd, 0x67, 0x18, 0xce, 0xc0 }, + { 0x75, 0x38, 0x44, 0x67, 0x3a, 0x27, 0x78, 0x2c, 0xc4, 0x20, 0x12, 0xe0 }, + { 0x06, 0xff, 0x83, 0xa1, 0x45, 0xc3, 0x70, 0x35, 0xa5, 0xc1, 0x26, 0x80 }, + { 0x3b, 0x37, 0x41, 0x78, 0x58, 0xcc, 0x2d, 0xd3, 0x3e, 0xc3, 0xf6, 0x20 }, + { 0x9a, 0x4a, 0x5a, 0x28, 0xee, 0x17, 0xca, 0x9c, 0x32, 0x48, 0x42, 0xc0 }, + { 0xbc, 0x29, 0xf4, 0x65, 0x30, 0x9c, 0x97, 0x7e, 0x89, 0x61, 0x0a, 0x40 }, + { 0x26, 0x63, 0xae, 0x6d, 0xdf, 0x8b, 0x5c, 0xe2, 0xbb, 0x29, 0x48, 0x80 }, + { 0x46, 0xf2, 0x31, 0xef, 0xe4, 0x57, 0x03, 0x4c, 0x18, 0x14, 0x41, 0x80 }, + { 0x3f, 0xb2, 0xce, 0x85, 0xab, 0xe9, 0xb0, 0xc7, 0x2e, 0x06, 0xfb, 0xe0 }, + { 0xde, 0x87, 0x48, 0x1f, 0x28, 0x2c, 0x15, 0x39, 0x71, 0xa0, 0xa2, 0xe0 }, + { 0xfc, 0xd7, 0xcc, 0xf2, 0x3c, 0x69, 0xfa, 0x99, 0xbb, 0xa1, 0x41, 0x20 }, + { 0xf0, 0x26, 0x14, 0x47, 0xe9, 0x49, 0x0c, 0xa8, 0xe4, 0x74, 0xce, 0xc0 }, + { 0x44, 0x10, 0x11, 0x58, 0x18, 0x19, 0x6f, 0x95, 0xcd, 0xd7, 0x01, 0x20 }, + { 0x08, 0x8f, 0xc3, 0x1d, 0xf4, 0xbf, 0xbd, 0xe2, 0xa4, 0xea, 0xfb, 0x40 }, + { 0xb8, 0xfe, 0xf1, 0xb6, 0x30, 0x77, 0x29, 0xfb, 0x0a, 0x07, 0x8c, 0x00 }, + { 0x5a, 0xfe, 0xa7, 0xac, 0xcc, 0xb7, 0x7b, 0xbc, 0x9d, 0x99, 0xa9, 0x00 }, + { 0x49, 0xa7, 0x01, 0x6a, 0xc6, 0x53, 0xf6, 0x5e, 0xcd, 0xc9, 0x07, 0x60 }, + { 0x19, 0x44, 0xd0, 0x85, 0xbe, 0x4e, 0x7d, 0xa8, 0xd6, 0xcc, 0x7d, 0x00 }, + { 0x25, 0x1f, 0x62, 0xad, 0xc4, 0x03, 0x2f, 0x0e, 0xe7, 0x14, 0x00, 0x20 }, + { 0x56, 0x47, 0x1f, 0x87, 0x02, 0xa0, 0x72, 0x1e, 0x00, 0xb1, 0x2b, 0x80 }, + { 0x2b, 0x8e, 0x49, 0x23, 0xf2, 0xdd, 0x51, 0xe2, 0xd5, 0x37, 0xfa, 0x00 }, + { 0x6b, 0x55, 0x0a, 0x40, 0xa6, 0x6f, 0x47, 0x55, 0xde, 0x95, 0xc2, 0x60 }, + { 0xa1, 0x8a, 0xd2, 0x8d, 0x4e, 0x27, 0xfe, 0x92, 0xa4, 0xf6, 0xc8, 0x40 }, + { 0x10, 0xc2, 0xe5, 0x86, 0x38, 0x8c, 0xb8, 0x2a, 0x3d, 0x80, 0x75, 0x80 }, + { 0xef, 0x34, 0xa4, 0x18, 0x17, 0xee, 0x02, 0x13, 0x3d, 0xb2, 0xeb, 0x00 }, + { 0x7e, 0x9c, 0x0c, 0x54, 0x32, 0x5a, 0x9c, 0x15, 0x83, 0x6e, 0x00, 0x00 }, + { 0x36, 0x93, 0xe5, 0x72, 0xd1, 0xfd, 0xe4, 0xcd, 0xf0, 0x79, 0xe8, 0x60 }, + { 0xbf, 0xb2, 0xce, 0xc5, 0xab, 0xe1, 0xb0, 0xc7, 0x2e, 0x07, 0xfb, 0xe0 }, + { 0x7e, 0xe1, 0x82, 0x30, 0xc5, 0x83, 0xcc, 0xcc, 0x57, 0xd4, 0xb0, 0x80 }, + { 0xa0, 0x66, 0xcb, 0x2f, 0xed, 0xaf, 0xc9, 0xf5, 0x26, 0x64, 0x12, 0x60 }, + { 0xbb, 0x23, 0x72, 0x5a, 0xbc, 0x47, 0xcc, 0x5f, 0x4c, 0xc4, 0xcd, 0x20 }, + { 0xde, 0xd9, 0xdb, 0xa3, 0xbe, 0xe4, 0x0c, 0x59, 0xb5, 0x60, 0x9b, 0x40 }, + { 0xd9, 0xa7, 0x01, 0x6a, 0xc6, 0x53, 0xe6, 0xde, 0xcd, 0xc9, 0x03, 0x60 }, + { 0x9a, 0xd4, 0x6a, 0xed, 0x5f, 0x70, 0x7f, 0x28, 0x0a, 0xb5, 0xfc, 0x40 }, + { 0xe5, 0x92, 0x1c, 0x77, 0x82, 0x25, 0x87, 0x31, 0x6d, 0x7d, 0x3c, 0x20 }, + { 0x4f, 0x14, 0xda, 0x82, 0x42, 0xa8, 0xb8, 0x6d, 0xca, 0x73, 0x35, 0x20 }, + { 0x8b, 0x8b, 0x50, 0x7a, 0xd4, 0x67, 0xd4, 0x44, 0x1d, 0xf7, 0x70, 0xe0 }, + { 0x22, 0x83, 0x1c, 0x9c, 0xf1, 0x16, 0x94, 0x67, 0xad, 0x04, 0xb6, 0x80 }, + { 0x21, 0x3b, 0x83, 0x8f, 0xe2, 0xae, 0x54, 0xc3, 0x8e, 0xe7, 0x18, 0x00 }, + { 0x5d, 0x92, 0x6b, 0x6d, 0xd7, 0x1f, 0x08, 0x51, 0x81, 0xa4, 0xe1, 0x20 }, + { 0x66, 0xab, 0x79, 0xd4, 0xb2, 0x9e, 0xe6, 0xe6, 0x95, 0x09, 0xe5, 0x60 }, + { 0x95, 0x81, 0x48, 0x68, 0x2d, 0x74, 0x8a, 0x38, 0xdd, 0x68, 0xba, 0xa0 }, + { 0xb8, 0xce, 0x02, 0x0c, 0xf0, 0x69, 0xc3, 0x2a, 0x72, 0x3a, 0xb1, 0x40 }, + { 0xf4, 0x33, 0x1d, 0x6d, 0x46, 0x16, 0x07, 0xe9, 0x57, 0x52, 0x74, 0x60 }, + { 0x6d, 0xa2, 0x3b, 0xa4, 0x24, 0xb9, 0x59, 0x61, 0x33, 0xcf, 0x9c, 0x80 }, + { 0xa6, 0x36, 0xbc, 0xbc, 0x7b, 0x30, 0xc5, 0xfb, 0xea, 0xe6, 0x7f, 0xe0 }, + { 0x5c, 0xb0, 0xd8, 0x6a, 0x07, 0xdf, 0x65, 0x4a, 0x90, 0x89, 0xa2, 0x00 }, + { 0xf1, 0x1f, 0x10, 0x68, 0x48, 0x78, 0x0f, 0xc9, 0xec, 0xdd, 0x80, 0xa0 }, + { 0x1f, 0xbb, 0x53, 0x64, 0xfb, 0x8d, 0x2c, 0x9d, 0x73, 0x0d, 0x5b, 0xa0 }, + { 0xfc, 0xb8, 0x6b, 0xc7, 0x0a, 0x50, 0xc9, 0xd0, 0x2a, 0x5d, 0x03, 0x40 }, + { 0xa5, 0x34, 0x43, 0x30, 0x29, 0xea, 0xc1, 0x5f, 0x32, 0x2e, 0x34, 0xc0 }, + { 0xc9, 0x89, 0xd9, 0xc7, 0xc3, 0xd3, 0xb8, 0xc5, 0x5d, 0x75, 0x13, 0x00 }, + { 0x7b, 0xb3, 0x8b, 0x2f, 0x01, 0x86, 0xd4, 0x66, 0x43, 0xae, 0x96, 0x20 }, + { 0x26, 0x44, 0xeb, 0xad, 0xeb, 0x44, 0xb9, 0x46, 0x7d, 0x1f, 0x42, 0xc0 }, + { 0x60, 0x8c, 0xc8, 0x57, 0x59, 0x4b, 0xfb, 0xb5, 0x5d, 0x69, 0x60, 0x00 } +}; + +} // namespace FT8 diff --git a/ft8/arrays.h b/ft8/arrays.h index 4cfd93788..ae3510858 100644 --- a/ft8/arrays.h +++ b/ft8/arrays.h @@ -18,282 +18,39 @@ // along with this program. If not, see . // /////////////////////////////////////////////////////////////////////////////////// +#ifndef FT8_ARRAYS_H_ +#define FT8_ARRAYS_H_ + +#include "export.h" + namespace FT8 { -// -// this is the LDPC(174,91) parity check matrix. -// each row describes one parity check. -// 83 rows. -// each number is an index into the codeword (1-origin). -// the codeword bits mentioned in each row must xor to zero. -// From WSJT-X's ldpc_174_91_c_reordered_parity.f90 -// -int Nm[][7] = { - { 4, 31, 59, 91, 92, 96, 153 }, - { 5, 32, 60, 93, 115, 146, 0 }, - { 6, 24, 61, 94, 122, 151, 0 }, - { 7, 33, 62, 95, 96, 143, 0 }, - { 8, 25, 63, 83, 93, 96, 148 }, - { 6, 32, 64, 97, 126, 138, 0 }, - { 5, 34, 65, 78, 98, 107, 154 }, - { 9, 35, 66, 99, 139, 146, 0 }, - { 10, 36, 67, 100, 107, 126, 0 }, - { 11, 37, 67, 87, 101, 139, 158 }, - { 12, 38, 68, 102, 105, 155, 0 }, - { 13, 39, 69, 103, 149, 162, 0 }, - { 8, 40, 70, 82, 104, 114, 145 }, - { 14, 41, 71, 88, 102, 123, 156 }, - { 15, 42, 59, 106, 123, 159, 0 }, - { 1, 33, 72, 106, 107, 157, 0 }, - { 16, 43, 73, 108, 141, 160, 0 }, - { 17, 37, 74, 81, 109, 131, 154 }, - { 11, 44, 75, 110, 121, 166, 0 }, - { 45, 55, 64, 111, 130, 161, 173 }, - { 8, 46, 71, 112, 119, 166, 0 }, - { 18, 36, 76, 89, 113, 114, 143 }, - { 19, 38, 77, 104, 116, 163, 0 }, - { 20, 47, 70, 92, 138, 165, 0 }, - { 2, 48, 74, 113, 128, 160, 0 }, - { 21, 45, 78, 83, 117, 121, 151 }, - { 22, 47, 58, 118, 127, 164, 0 }, - { 16, 39, 62, 112, 134, 158, 0 }, - { 23, 43, 79, 120, 131, 145, 0 }, - { 19, 35, 59, 73, 110, 125, 161 }, - { 20, 36, 63, 94, 136, 161, 0 }, - { 14, 31, 79, 98, 132, 164, 0 }, - { 3, 44, 80, 124, 127, 169, 0 }, - { 19, 46, 81, 117, 135, 167, 0 }, - { 7, 49, 58, 90, 100, 105, 168 }, - { 12, 50, 61, 118, 119, 144, 0 }, - { 13, 51, 64, 114, 118, 157, 0 }, - { 24, 52, 76, 129, 148, 149, 0 }, - { 25, 53, 69, 90, 101, 130, 156 }, - { 20, 46, 65, 80, 120, 140, 170 }, - { 21, 54, 77, 100, 140, 171, 0 }, - { 35, 82, 133, 142, 171, 174, 0 }, - { 14, 30, 83, 113, 125, 170, 0 }, - { 4, 29, 68, 120, 134, 173, 0 }, - { 1, 4, 52, 57, 86, 136, 152 }, - { 26, 51, 56, 91, 122, 137, 168 }, - { 52, 84, 110, 115, 145, 168, 0 }, - { 7, 50, 81, 99, 132, 173, 0 }, - { 23, 55, 67, 95, 172, 174, 0 }, - { 26, 41, 77, 109, 141, 148, 0 }, - { 2, 27, 41, 61, 62, 115, 133 }, - { 27, 40, 56, 124, 125, 126, 0 }, - { 18, 49, 55, 124, 141, 167, 0 }, - { 6, 33, 85, 108, 116, 156, 0 }, - { 28, 48, 70, 85, 105, 129, 158 }, - { 9, 54, 63, 131, 147, 155, 0 }, - { 22, 53, 68, 109, 121, 174, 0 }, - { 3, 13, 48, 78, 95, 123, 0 }, - { 31, 69, 133, 150, 155, 169, 0 }, - { 12, 43, 66, 89, 97, 135, 159 }, - { 5, 39, 75, 102, 136, 167, 0 }, - { 2, 54, 86, 101, 135, 164, 0 }, - { 15, 56, 87, 108, 119, 171, 0 }, - { 10, 44, 82, 91, 111, 144, 149 }, - { 23, 34, 71, 94, 127, 153, 0 }, - { 11, 49, 88, 92, 142, 157, 0 }, - { 29, 34, 87, 97, 147, 162, 0 }, - { 30, 50, 60, 86, 137, 142, 162 }, - { 10, 53, 66, 84, 112, 128, 165 }, - { 22, 57, 85, 93, 140, 159, 0 }, - { 28, 32, 72, 103, 132, 166, 0 }, - { 28, 29, 84, 88, 117, 143, 150 }, - { 1, 26, 45, 80, 128, 147, 0 }, - { 17, 27, 89, 103, 116, 153, 0 }, - { 51, 57, 98, 163, 165, 172, 0 }, - { 21, 37, 73, 138, 152, 169, 0 }, - { 16, 47, 76, 130, 137, 154, 0 }, - { 3, 24, 30, 72, 104, 139, 0 }, - { 9, 40, 90, 106, 134, 151, 0 }, - { 15, 58, 60, 74, 111, 150, 163 }, - { 18, 42, 79, 144, 146, 152, 0 }, - { 25, 38, 65, 99, 122, 160, 0 }, - { 17, 42, 75, 129, 170, 172, 0 }, -}; +class FT8_API Arrays +{ +public: + // + // this is the LDPC(174,91) parity check matrix. + // each row describes one parity check. + // 83 rows. + // each number is an index into the codeword (1-origin). + // the codeword bits mentioned in each row must xor to zero. + // From WSJT-X's ldpc_174_91_c_reordered_parity.f90 + // + static const int Nm[][7]; -// Mn from WSJT-X's ldpc_174_91_c_reordered_parity.f90 -// each of the 174 rows corresponds to a codeword bit. -// the numbers indicate which three parity -// checks (rows in Nm) refer to the codeword bit. -// 1-origin. -int Mn[][3] = { - { 16, 45, 73 }, - { 25, 51, 62 }, - { 33, 58, 78 }, - { 1, 44, 45 }, - { 2, 7, 61 }, - { 3, 6, 54 }, - { 4, 35, 48 }, - { 5, 13, 21 }, - { 8, 56, 79 }, - { 9, 64, 69 }, - { 10, 19, 66 }, - { 11, 36, 60 }, - { 12, 37, 58 }, - { 14, 32, 43 }, - { 15, 63, 80 }, - { 17, 28, 77 }, - { 18, 74, 83 }, - { 22, 53, 81 }, - { 23, 30, 34 }, - { 24, 31, 40 }, - { 26, 41, 76 }, - { 27, 57, 70 }, - { 29, 49, 65 }, - { 3, 38, 78 }, - { 5, 39, 82 }, - { 46, 50, 73 }, - { 51, 52, 74 }, - { 55, 71, 72 }, - { 44, 67, 72 }, - { 43, 68, 78 }, - { 1, 32, 59 }, - { 2, 6, 71 }, - { 4, 16, 54 }, - { 7, 65, 67 }, - { 8, 30, 42 }, - { 9, 22, 31 }, - { 10, 18, 76 }, - { 11, 23, 82 }, - { 12, 28, 61 }, - { 13, 52, 79 }, - { 14, 50, 51 }, - { 15, 81, 83 }, - { 17, 29, 60 }, - { 19, 33, 64 }, - { 20, 26, 73 }, - { 21, 34, 40 }, - { 24, 27, 77 }, - { 25, 55, 58 }, - { 35, 53, 66 }, - { 36, 48, 68 }, - { 37, 46, 75 }, - { 38, 45, 47 }, - { 39, 57, 69 }, - { 41, 56, 62 }, - { 20, 49, 53 }, - { 46, 52, 63 }, - { 45, 70, 75 }, - { 27, 35, 80 }, - { 1, 15, 30 }, - { 2, 68, 80 }, - { 3, 36, 51 }, - { 4, 28, 51 }, - { 5, 31, 56 }, - { 6, 20, 37 }, - { 7, 40, 82 }, - { 8, 60, 69 }, - { 9, 10, 49 }, - { 11, 44, 57 }, - { 12, 39, 59 }, - { 13, 24, 55 }, - { 14, 21, 65 }, - { 16, 71, 78 }, - { 17, 30, 76 }, - { 18, 25, 80 }, - { 19, 61, 83 }, - { 22, 38, 77 }, - { 23, 41, 50 }, - { 7, 26, 58 }, - { 29, 32, 81 }, - { 33, 40, 73 }, - { 18, 34, 48 }, - { 13, 42, 64 }, - { 5, 26, 43 }, - { 47, 69, 72 }, - { 54, 55, 70 }, - { 45, 62, 68 }, - { 10, 63, 67 }, - { 14, 66, 72 }, - { 22, 60, 74 }, - { 35, 39, 79 }, - { 1, 46, 64 }, - { 1, 24, 66 }, - { 2, 5, 70 }, - { 3, 31, 65 }, - { 4, 49, 58 }, - { 1, 4, 5 }, - { 6, 60, 67 }, - { 7, 32, 75 }, - { 8, 48, 82 }, - { 9, 35, 41 }, - { 10, 39, 62 }, - { 11, 14, 61 }, - { 12, 71, 74 }, - { 13, 23, 78 }, - { 11, 35, 55 }, - { 15, 16, 79 }, - { 7, 9, 16 }, - { 17, 54, 63 }, - { 18, 50, 57 }, - { 19, 30, 47 }, - { 20, 64, 80 }, - { 21, 28, 69 }, - { 22, 25, 43 }, - { 13, 22, 37 }, - { 2, 47, 51 }, - { 23, 54, 74 }, - { 26, 34, 72 }, - { 27, 36, 37 }, - { 21, 36, 63 }, - { 29, 40, 44 }, - { 19, 26, 57 }, - { 3, 46, 82 }, - { 14, 15, 58 }, - { 33, 52, 53 }, - { 30, 43, 52 }, - { 6, 9, 52 }, - { 27, 33, 65 }, - { 25, 69, 73 }, - { 38, 55, 83 }, - { 20, 39, 77 }, - { 18, 29, 56 }, - { 32, 48, 71 }, - { 42, 51, 59 }, - { 28, 44, 79 }, - { 34, 60, 62 }, - { 31, 45, 61 }, - { 46, 68, 77 }, - { 6, 24, 76 }, - { 8, 10, 78 }, - { 40, 41, 70 }, - { 17, 50, 53 }, - { 42, 66, 68 }, - { 4, 22, 72 }, - { 36, 64, 81 }, - { 13, 29, 47 }, - { 2, 8, 81 }, - { 56, 67, 73 }, - { 5, 38, 50 }, - { 12, 38, 64 }, - { 59, 72, 80 }, - { 3, 26, 79 }, - { 45, 76, 81 }, - { 1, 65, 74 }, - { 7, 18, 77 }, - { 11, 56, 59 }, - { 14, 39, 54 }, - { 16, 37, 66 }, - { 10, 28, 55 }, - { 15, 60, 70 }, - { 17, 25, 82 }, - { 20, 30, 31 }, - { 12, 67, 68 }, - { 23, 75, 80 }, - { 27, 32, 62 }, - { 24, 69, 75 }, - { 19, 21, 71 }, - { 34, 53, 61 }, - { 35, 46, 47 }, - { 33, 59, 76 }, - { 40, 43, 83 }, - { 41, 42, 63 }, - { 49, 75, 83 }, - { 20, 44, 48 }, - { 42, 49, 57 }, + // Mn from WSJT-X's ldpc_174_91_c_reordered_parity.f90 + // each of the 174 rows corresponds to a codeword bit. + // the numbers indicate which three parity + // checks (rows in Nm) refer to the codeword bit. + // 1-origin. + static const int Mn[][3]; + + // This is the LDPC(174, 91) generator matrix + // It has 83 rows and 91 columns (zero padded on the right thus 12 bytes) + // From WSJT-X's ldpc_174_91_c_generator.f90 + static const int Gm[][12]; }; } // namespace FT8 + +#endif // FT8_ARRAYS_H_ diff --git a/ft8/ft8.cpp b/ft8/ft8.cpp index f0413854e..cb9046a6e 100644 --- a/ft8/ft8.cpp +++ b/ft8/ft8.cpp @@ -44,6 +44,7 @@ #include "ft8.h" #include "libldpc.h" #include "osd.h" +#include "arrays.h" namespace FT8 { @@ -2478,13 +2479,11 @@ void FT8::soft_decode_triples( // given log likelyhood for each bit, try LDPC and OSD decoders. // on success, puts corrected 174 bits into a174[]. // -int FT8::decode(const float ll174[], int a174[], int use_osd, std::string &comment) +int FT8::decode(const float ll174[], int a174[], FT8Params& _params, int use_osd, std::string &comment) { - void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok); - void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok); int plain[174]; // will be 0/1 bits. int ldpc_ok = 0; // 83 will mean success. - ldpc_decode((float *)ll174, params.ldpc_iters, plain, &ldpc_ok); + LDPC::ldpc_decode((float *)ll174, _params.ldpc_iters, plain, &ldpc_ok); int ok_thresh = 83; // 83 is perfect if (ldpc_ok >= ok_thresh) @@ -2500,11 +2499,11 @@ int FT8::decode(const float ll174[], int a174[], int use_osd, std::string &comme } } - if (use_osd && params.osd_depth >= 0 && ldpc_ok >= params.osd_ldpc_thresh) + if (use_osd && _params.osd_depth >= 0 && ldpc_ok >= _params.osd_ldpc_thresh) { int oplain[91]; int got_depth = -1; - int osd_ok = OSD::osd_decode((float *)ll174, params.osd_depth, oplain, &got_depth); + int osd_ok = OSD::osd_decode((float *)ll174, _params.osd_depth, oplain, &got_depth); if (osd_ok) { @@ -2518,6 +2517,37 @@ int FT8::decode(const float ll174[], int a174[], int use_osd, std::string &comme return 0; } +// +// encode a 77 bit message into a 174 bit payload +// adds the 14 bit CRC to obtain 91 bits +// apply (174, 91) generator mastrix to obtain the 83 parity bits +// append the 83 bits to the 91 bits message + crc to obbain the 174 bit payload +// +void FT8::encode(int a174[], int s77[]) +{ + int a91[91]; // msg + CRC + std::fill(a91, a91 + 91, 0); + std::copy(s77, s77+77, a91); // copy msg + LDPC::ft8_crc(a91, 82, &a91[77]); // append CRC - to match OSD::check_crc + std::copy(a91, a91+91, a174); // copy msg + CRC + int sum, n, ni, b; + + for (int i=0; i<83; i++) + { + sum = 0; + + for (int j=0; j<91; j++) + { + n = j/8; // byte index in the generator matrix + ni = j%8; // bit index in the generator matrix byte LSB first + b = (Arrays::Gm[i][n] >> (7-ni)) & 1; // bit in the generator matrix + sum += a91[j] * b; + } + + a174[91+i] = sum % 2; // sum modulo 2 + } +} + // // bandpass filter some FFT bins. // smooth transition from stop-band to pass-band, @@ -3418,7 +3448,7 @@ int FT8::try_decode( int a174[174]; std::string comment(comment1); - if (decode(ll174, a174, use_osd, comment)) + if (decode(ll174, a174, params, use_osd, comment)) { // a174 is corrected 91 bits of plain message plus 83 bits of LDPC parity. // how many of the corrected 174 bits match the received signal in ll174? diff --git a/ft8/ft8.h b/ft8/ft8.h index 5e0b6aa9a..41b3cdf7c 100644 --- a/ft8/ft8.h +++ b/ft8/ft8.h @@ -309,6 +309,16 @@ public: std::vector coarse(const FFTEngine::ffts_t &bins, int si0, int si1); FT8Params& getParams() { return params; } + // + // given log likelyhood for each bit, try LDPC and OSD decoders. + // on success, puts corrected 174 bits into a174[]. + // + static int decode(const float ll174[], int a174[], FT8Params& params, int use_osd, std::string &comment); + // encode a 77 bit message into a 174 bit payload + // adds the 14 bit CRC to obtain 91 bits + // apply (174, 91) generator mastrix to obtain the 83 parity bits + // append the 83 bits to the 91 bits messag e+ crc to obbain the 174 bit payload + static void encode(int a174[], int s77[]); private: // @@ -505,11 +515,6 @@ private: float ll174[] ); // - // given log likelyhood for each bit, try LDPC and OSD decoders. - // on success, puts corrected 174 bits into a174[]. - // - int decode(const float ll174[], int a174[], int use_osd, std::string &comment); - // // bandpass filter some FFT bins. // smooth transition from stop-band to pass-band, // so that it's not a brick-wall filter, so that it diff --git a/ft8/ldpcgen.py b/ft8/ldpcgen.py new file mode 100755 index 000000000..1e2ea86ea --- /dev/null +++ b/ft8/ldpcgen.py @@ -0,0 +1,104 @@ +#!/usr/bin/env python + +# Generates (prints out) C structure of FT8 LDPC generator matrix +# Derived from WSJT-X ldpc_174_91_c_generator.f90 + +DATA_G = [ + "8329ce11bf31eaf509f27fc", + "761c264e25c259335493132", + "dc265902fb277c6410a1bdc", + "1b3f417858cd2dd33ec7f62", + "09fda4fee04195fd034783a", + "077cccc11b8873ed5c3d48a", + "29b62afe3ca036f4fe1a9da", + "6054faf5f35d96d3b0c8c3e", + "e20798e4310eed27884ae90", + "775c9c08e80e26ddae56318", + "b0b811028c2bf997213487c", + "18a0c9231fc60adf5c5ea32", + "76471e8302a0721e01b12b8", + "ffbccb80ca8341fafb47b2e", + "66a72a158f9325a2bf67170", + "c4243689fe85b1c51363a18", + "0dff739414d1a1b34b1c270", + "15b48830636c8b99894972e", + "29a89c0d3de81d665489b0e", + "4f126f37fa51cbe61bd6b94", + "99c47239d0d97d3c84e0940", + "1919b75119765621bb4f1e8", + "09db12d731faee0b86df6b8", + "488fc33df43fbdeea4eafb4", + "827423ee40b675f756eb5fe", + "abe197c484cb74757144a9a", + "2b500e4bc0ec5a6d2bdbdd0", + "c474aa53d70218761669360", + "8eba1a13db3390bd6718cec", + "753844673a27782cc42012e", + "06ff83a145c37035a5c1268", + "3b37417858cc2dd33ec3f62", + "9a4a5a28ee17ca9c324842c", + "bc29f465309c977e89610a4", + "2663ae6ddf8b5ce2bb29488", + "46f231efe457034c1814418", + "3fb2ce85abe9b0c72e06fbe", + "de87481f282c153971a0a2e", + "fcd7ccf23c69fa99bba1412", + "f0261447e9490ca8e474cec", + "4410115818196f95cdd7012", + "088fc31df4bfbde2a4eafb4", + "b8fef1b6307729fb0a078c0", + "5afea7acccb77bbc9d99a90", + "49a7016ac653f65ecdc9076", + "1944d085be4e7da8d6cc7d0", + "251f62adc4032f0ee714002", + "56471f8702a0721e00b12b8", + "2b8e4923f2dd51e2d537fa0", + "6b550a40a66f4755de95c26", + "a18ad28d4e27fe92a4f6c84", + "10c2e586388cb82a3d80758", + "ef34a41817ee02133db2eb0", + "7e9c0c54325a9c15836e000", + "3693e572d1fde4cdf079e86", + "bfb2cec5abe1b0c72e07fbe", + "7ee18230c583cccc57d4b08", + "a066cb2fedafc9f52664126", + "bb23725abc47cc5f4cc4cd2", + "ded9dba3bee40c59b5609b4", + "d9a7016ac653e6decdc9036", + "9ad46aed5f707f280ab5fc4", + "e5921c77822587316d7d3c2", + "4f14da8242a8b86dca73352", + "8b8b507ad467d4441df770e", + "22831c9cf1169467ad04b68", + "213b838fe2ae54c38ee7180", + "5d926b6dd71f085181a4e12", + "66ab79d4b29ee6e69509e56", + "958148682d748a38dd68baa", + "b8ce020cf069c32a723ab14", + "f4331d6d461607e95752746", + "6da23ba424b9596133cf9c8", + "a636bcbc7b30c5fbeae67fe", + "5cb0d86a07df654a9089a20", + "f11f106848780fc9ecdd80a", + "1fbb5364fb8d2c9d730d5ba", + "fcb86bc70a50c9d02a5d034", + "a534433029eac15f322e34c", + "c989d9c7c3d3b8c55d75130", + "7bb38b2f0186d46643ae962", + "2644ebadeb44b9467d1f42c", + "608cc857594bfbb55d69600" +] + +for data_g in DATA_G: + rest = data_g + rowstr = '{ ' + while len(rest) > 0: + byte_hex = rest[:2] + if len(byte_hex) == 1: + rowstr += f'0x{byte_hex}0, ' + else: + rowstr += f'0x{byte_hex}, ' + rest = rest[2:] + rowstr = rowstr[:-2] + ' },' + print(rowstr) + diff --git a/ft8/libldpc.cpp b/ft8/libldpc.cpp index b737c1268..65d818dc5 100644 --- a/ft8/libldpc.cpp +++ b/ft8/libldpc.cpp @@ -37,6 +37,7 @@ #include #include #include "arrays.h" +#include "libldpc.h" // float, long float, __float128 #define REAL float @@ -48,7 +49,7 @@ namespace FT8 // returns the number of parity checks that passed. // 83 means total success. // -int ldpc_check(int codeword[]) +int LDPC::ldpc_check(int codeword[]) { int score = 0; @@ -58,7 +59,7 @@ int ldpc_check(int codeword[]) int x = 0; for (int ii1 = 0; ii1 < 7; ii1++) { - int i1 = Nm[j][ii1] - 1; + int i1 = Arrays::Nm[j][ii1] - 1; if (i1 >= 0) { x ^= codeword[i1]; @@ -75,7 +76,7 @@ int ldpc_check(int codeword[]) // iters is how hard to try. // ok is the number of parity checks that worked out, // ok == 83 means success. -void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok) +void LDPC::ldpc_decode(float llcodeword[], int iters, int plain[], int *ok) { REAL m[83][174]; REAL e[83][174]; @@ -114,13 +115,13 @@ void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok) { for (int ii1 = 0; ii1 < 7; ii1++) { - int i1 = Nm[j][ii1] - 1; + int i1 = Arrays::Nm[j][ii1] - 1; if (i1 < 0) continue; REAL a = 1.0; for (int ii2 = 0; ii2 < 7; ii2++) { - int i2 = Nm[j][ii2] - 1; + int i2 = Arrays::Nm[j][ii2] - 1; if (i2 >= 0 && i2 != i1) { // tmp ranges from 1.0 to -1.0, for @@ -145,7 +146,7 @@ void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok) REAL q1 = 1.0 - q0; for (int j = 0; j < 3; j++) { - int j2 = Mn[i][j] - 1; + int j2 = Arrays::Mn[i][j] - 1; q0 *= e[j2][i]; q1 *= 1.0 - e[j2][i]; } @@ -181,12 +182,12 @@ void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok) { for (int ji1 = 0; ji1 < 3; ji1++) { - int j1 = Mn[i][ji1] - 1; + int j1 = Arrays::Mn[i][ji1] - 1; REAL q0 = codeword[i]; REAL q1 = 1.0 - q0; for (int ji2 = 0; ji2 < 3; ji2++) { - int j2 = Mn[i][ji2] - 1; + int j2 = Arrays::Mn[i][ji2] - 1; if (j1 != j2) { q0 *= e[j2][i]; @@ -217,7 +218,7 @@ void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok) // thank you Douglas Bagnall // https://math.stackexchange.com/a/446411 -float fast_tanh(float x) +float LDPC::fast_tanh(float x) { if (x < -7.6) { @@ -256,7 +257,7 @@ return tanhtable[ind]; // iters is how hard to try. // ok is the number of parity checks that worked out, // ok == 83 means success. -void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok) +void LDPC::ldpc_decode_log(float codeword[], int iters, int plain[], int *ok) { REAL m[83][174]; REAL e[83][174]; @@ -277,13 +278,13 @@ void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok) { for (int ii1 = 0; ii1 < 7; ii1++) { - int i1 = Nm[j][ii1] - 1; + int i1 = Arrays::Nm[j][ii1] - 1; if (i1 < 0) continue; REAL a = 1.0; for (int ii2 = 0; ii2 < 7; ii2++) { - int i2 = Nm[j][ii2] - 1; + int i2 = Arrays::Nm[j][ii2] - 1; if (i2 >= 0 && i2 != i1) { // a *= table_tanh(m[j][i2] / 2.0); @@ -312,7 +313,7 @@ void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok) { REAL l = codeword[i]; for (int j = 0; j < 3; j++) - l += e[Mn[i][j] - 1][i]; + l += e[Arrays::Mn[i][j] - 1][i]; cw[i] = (l <= 0.0); } int score = ldpc_check(cw); @@ -335,11 +336,11 @@ void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok) { for (int ji1 = 0; ji1 < 3; ji1++) { - int j1 = Mn[i][ji1] - 1; + int j1 = Arrays::Mn[i][ji1] - 1; REAL l = codeword[i]; for (int ji2 = 0; ji2 < 3; ji2++) { - int j2 = Mn[i][ji2] - 1; + int j2 = Arrays::Mn[i][ji2] - 1; if (j1 != j2) { l += e[j2][i]; @@ -361,7 +362,7 @@ void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok) // check the FT8 CRC-14 // -void ft8_crc(int msg1[], int msglen, int out[14]) +void LDPC::ft8_crc(int msg1[], int msglen, int out[14]) { // the old FT8 polynomial for 12-bit CRC, 0xc06. // int div[] = { 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0 }; @@ -407,7 +408,7 @@ void ft8_crc(int msg1[], int msglen, int out[14]) // m[174][2*91]. // m's right half should start out as zeros. // m's upper-right quarter will be the desired inverse. -void gauss_jordan(int rows, int cols, int m[174][2 * 91], int which[91], int *ok) +void LDPC::gauss_jordan(int rows, int cols, int m[174][2 * 91], int which[91], int *ok) // gauss_jordan(int rows, int cols, int m[cols][2*rows], int which[rows], int *ok) { *ok = 0; diff --git a/ft8/libldpc.h b/ft8/libldpc.h index f86cb59d1..a83310870 100644 --- a/ft8/libldpc.h +++ b/ft8/libldpc.h @@ -24,13 +24,17 @@ namespace FT8 { -int ldpc_check(int codeword[]); -void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok); -float fast_tanh(float x); -void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok); -void ft8_crc(int msg1[], int msglen, int out[14]); -void gauss_jordan(int rows, int cols, int m[174][2 * 91], int which[91], int *ok); +class LDPC { +public: + static void ldpc_decode(float llcodeword[], int iters, int plain[], int *ok); + static void ldpc_decode_log(float codeword[], int iters, int plain[], int *ok); + static void ft8_crc(int msg1[], int msglen, int out[14]); + static void gauss_jordan(int rows, int cols, int m[174][2 * 91], int which[91], int *ok); +private: + static int ldpc_check(int codeword[]); + static float fast_tanh(float x); +}; } // namespace FT8 diff --git a/ft8/osd.cpp b/ft8/osd.cpp index 3d813db06..ae9fe8040 100644 --- a/ft8/osd.cpp +++ b/ft8/osd.cpp @@ -57,7 +57,7 @@ int OSD::check_crc(const int a91[91]) return 0; // why 82? why not 77? - ft8_crc(aa, 82, out1); + LDPC::ft8_crc(aa, 82, out1); for (int i = 0; i < 14; i++) { @@ -216,7 +216,7 @@ int OSD::osd_decode(float codeword[174], int depth, int out[91], int *out_depth) } int ok = 0; - gauss_jordan(91, 174, b, xwhich, &ok); + LDPC::gauss_jordan(91, 174, b, xwhich, &ok); if (ok == 0) { fprintf(stderr, "gauss_jordan failed\n"); @@ -315,180 +315,180 @@ int OSD::osd_decode(float codeword[174], int depth, int out[91], int *out_depth) } const int OSD::gen_sys[174][91] = { - { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 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{ 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, }, + { 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, }, + { 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, }, + { 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, }, + { 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, }, + { 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, }, + { 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, }, + { 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, }, + { 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, }, + { 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, }, + { 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, }, + { 1, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, }, + { 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, }, + { 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, }, + { 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, }, }; } // namespace FT8 diff --git a/ft8/pack0.cpp b/ft8/pack0.cpp new file mode 100644 index 000000000..c736f8211 --- /dev/null +++ b/ft8/pack0.cpp @@ -0,0 +1,51 @@ +/////////////////////////////////////////////////////////////////////////////////// +// Copyright (C) 2024 Edouard Griffiths, F4EXB // +// // +// This is the code from ft8mon: https://github.com/rtmrtmrtmrtm/ft8mon // +// reformatted and adapted to Qt and SDRangel context // +// // +// This program 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 as version 3 of the License, or // +// (at your option) any later version. // +// // +// This program 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 V3 for more details. // +// // +// You should have received a copy of the GNU General Public License // +// along with this program. If not, see . // +/////////////////////////////////////////////////////////////////////////////////// + +#include "pack0.h" + +namespace FT8 { + +void pa128(int a77[], int start, int len, const boost::multiprecision::int128_t value) +{ + boost::multiprecision::int128_t x = value; + int i = start + len; + + while (x != 0) + { + i--; + a77[i] = (int) (x % 2); + x /= 2; + } +} + +void pa64(int a77[], int start, int len, const uint64_t value) +{ + uint64_t x = value; + int i = start + len; + + while (x != 0) + { + i--; + a77[i] = x % 2; + x /= 2; + } +} + +} // namespae FT8 diff --git a/ft8/pack0.h b/ft8/pack0.h new file mode 100644 index 000000000..b8dc5a728 --- /dev/null +++ b/ft8/pack0.h @@ -0,0 +1,28 @@ +/////////////////////////////////////////////////////////////////////////////////// +// Copyright (C) 2024 Edouard Griffiths, F4EXB // +// // +// This is the code from ft8mon: https://github.com/rtmrtmrtmrtm/ft8mon // +// reformatted and adapted to Qt and SDRangel context // +// // +// This program 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 as version 3 of the License, or // +// (at your option) any later version. // +// // +// This program 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 V3 for more details. // +// // +// You should have received a copy of the GNU General Public License // +// along with this program. If not, see . // +/////////////////////////////////////////////////////////////////////////////////// +#include + +namespace FT8 +{ + +void pa128(int a77[], int start, int len, const boost::multiprecision::int128_t value); +void pa64(int a77[], int start, int len, const uint64_t value); // pack into bits MSB first + +} // namespace FT8 diff --git a/ft8/unpack.cpp b/ft8/packing.cpp similarity index 75% rename from ft8/unpack.cpp rename to ft8/packing.cpp index f8d9b04e2..dfa8c427b 100644 --- a/ft8/unpack.cpp +++ b/ft8/packing.cpp @@ -18,9 +18,11 @@ // along with this program. If not, see . // /////////////////////////////////////////////////////////////////////////////////// #include +#include -#include "unpack.h" +#include "packing.h" #include "unpack0.h" +#include "pack0.h" #include "util.h" namespace FT8 { @@ -716,4 +718,220 @@ std::string Packing::unpack(int a77[], std::string& call1, std::string& call2, s return std::string(tmp); } +bool Packing::packcall_std(int& c28, const std::string& callstr) +{ + c28 = 0; + + if (callstr.size() == 2) + { + if (callstr == "DE") { + return true; + } + + if (callstr == "CQ") + { + c28 = 2; + return true; + } + } + + if (callstr == "QRZ") + { + c28 = 1; + return true; + } + + if (callstr.rfind("CQ ", 0) == 0) // special CQ + { + std::regex cq_regex_num("CQ (\\d\\d\\d)"); + std::regex cq_regex_alpha("CQ ([A-Z]+)"); + std::smatch cq_match; + + if (std::regex_match(callstr, cq_match, cq_regex_num)) + { + std::string cq_num_arg = cq_match[1].str(); + int cq_num = stoi(cq_num_arg); + c28 = 3 + cq_num; + return true; + } + + if (std::regex_match(callstr, cq_match, cq_regex_alpha)) + { + std::string cq_alpha_arg = cq_match[1].str(); + + if (cq_alpha_arg.size() > 4) { + return false; + } + + int arg_value = 1; + + for (auto c : cq_alpha_arg) { + arg_value *= int(c) - int('A') + 1; + } + + if (cq_alpha_arg.size() == 1) { + c28 = 1003 + arg_value; + } else if (cq_alpha_arg.size() == 2) { + c28 = 1030 + arg_value; + } else if (cq_alpha_arg.size() == 3) { + c28 = 1759 + arg_value; + } else if (cq_alpha_arg.size() == 4) { + c28 = 21442 + arg_value; + } + + return true; + } + } + + if ((callstr.size() < 3) || (callstr.size() > 6)) { // standard callsigns are 3 to 6 characters + return false; + } + + std::string call_prefix; + int call_num; + std::string call_suffix; + + if (isdigit(callstr.at(0))) + { + std::regex call_regex("(\\d[A-Z])(\\d)([A-Z]{1,3})"); + std::smatch call_match; + + if (std::regex_match(callstr, call_match, call_regex)) + { + call_prefix = call_match[1].str(); + call_num = stoi(call_match[2].str()); + call_suffix = call_match[3].str(); + } + else + { + return false; + } + } + else + { + std::regex call_regex("([A-Z0-9]{1,2})(\\d)([A-Z]{1,3})"); + std::smatch call_match; + + if (std::regex_match(callstr, call_match, call_regex)) + { + call_prefix = call_match[1].str(); + call_num = stoi(call_match[2].str()); + call_suffix = call_match[3].str(); + + if (isdigit(call_prefix.at(0))) { // In this case the first character cannot be a digit + return false; + } + } + else + { + return false; + } + } + + // qDebug("Packing::packcall_std: %s %d %s", call_prefix.c_str(), call_num, call_suffix.c_str()); + int i1 = 0, i2 = 0, i3 = 0, i4 = 0, i5 = 0, i6 = 0; + std::string alnums = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; + std::string alphas = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; + + if (call_prefix.size() == 2) + { + i1 = alnums.find(call_prefix.at(0)) + 1; + i2 = alnums.find(call_prefix.at(1)); + } + else + { + i2 = alnums.find(call_prefix.at(0)); + } + + i3 = call_num; + i4 = alphas.find(call_suffix.at(0)) + 1; + + if (call_suffix.size() > 1) { + i5 = alphas.find(call_suffix.at(1)) + 1; + } + if (call_suffix.size() > 2) { + i6 = alphas.find(call_suffix.at(2)) + 1; + } + + c28 = 2063592 + (1<<22) + 36*10*27*27*27*i1 + 10*27*27*27*i2 + 27*27*27*i3 + 27*27*i4 + 27*i5 + i6; + // qDebug("Packing::packcall c28: %d, i1: %d, i2: %d, i3: %d, i4: %d, i5: %d, i6: %d", c28, i1, i2, i3, i4, i5, i6); + return true; +} + +bool Packing::packgrid(int& g15, const std::string& locstr) +{ + static const int MAXGRID4 = 32400; + std::regex loc_regex("[A-R][A-R][0-9][0-9]"); + std::smatch loc_match; + g15 = 0; + + if (locstr.size() == 0) + { + g15 = MAXGRID4 + 1; + return true; + } + + if (locstr == "RRR") + { + g15 = MAXGRID4 + 2; + return true; + } + + if (locstr == "RR73") + { + g15 = MAXGRID4 + 3; + return true; + } + + if (locstr == "73") + { + g15 = MAXGRID4 + 4; + return true; + } + + if (std::regex_match(locstr, loc_match, loc_regex)) // Maidenhead 4 char locator + { + int i1 = int(locstr.at(0)) - int('A'); + int i2 = int(locstr.at(1)) - int('A'); + int i3 = int(locstr.at(2)) - int('0'); + int i4 = int(locstr.at(3)) - int('0'); + g15 = i1*18*10*10 + i2*10*10 + i3*10 + i4; + return true; + } + + std::regex rpt_regex("([+-])(\\d)(\\d)"); + + if (std::regex_match(locstr, loc_match, rpt_regex)) // Report -30 to +99 + { + int i1 = int(locstr.at(1)) - int('0'); + int i2 = int(locstr.at(2)) - int('0'); + int s = (locstr.at(0) == '-') ? -1 : 1; + g15 = MAXGRID4 + 35 + s*(i1*10 + i2); + return true; + } + + return false; +} + +bool Packing::packfree(int a77[], const std::string& msg) +{ + std::string s = msg; + s.append(13, ' '); + s = s.substr(0, 13); + + std::string a = " 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ+-./?"; + boost::multiprecision::int128_t b = 1, x = 0; + + for (int i=12; i>=0; i--) + { + int ai = a.find(s.at(i)); + ai = (ai < 0) ? 0 : ai; // map unknown characters to blanks + x += ai * b; + b *= 42; + } + + pa128(a77, 0, 71, x); + return true; +} + } // namespace FT8 diff --git a/ft8/unpack.h b/ft8/packing.h similarity index 91% rename from ft8/unpack.h rename to ft8/packing.h index 0b5dc43ea..0659d1949 100644 --- a/ft8/unpack.h +++ b/ft8/packing.h @@ -35,6 +35,11 @@ class FT8_API Packing { public: std::string unpack(int a91[], std::string& call1str, std::string& call2str, std::string& locstr, std::string& type); + static std::string unpack_0_0(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); + std::string unpack_1(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); + static bool packcall_std(int& c28, const std::string& callstr); + static bool packgrid(int& g15, const std::string& locstr); + static bool packfree(int a77[], const std::string& msg); private: static int ihashcall(std::string call, int m); @@ -42,17 +47,16 @@ private: std::string unpackgrid15(int ng, int ir); std::string unpackgrid25(int ng); void remember_call(std::string call); - std::string unpack_0_0(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); std::string unpack_0_1(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); // 0.3 and 0.4 std::string unpack_0_3(int a77[], int n3, std::string& call1str, std::string& call2str, std::string& locstr); std::string unpack_0_5(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); // 1 and 2 - std::string unpack_1(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); std::string unpack_3(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); std::string unpack_4(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); std::string unpack_5(int a77[], std::string& call1str, std::string& call2str, std::string& locstr); + QMutex hashes_mu; std::map hashes10; std::map hashes12; diff --git a/plugins/channelrx/demodft8/ft8demodworker.h b/plugins/channelrx/demodft8/ft8demodworker.h index 2c1f75a9e..95792646b 100644 --- a/plugins/channelrx/demodft8/ft8demodworker.h +++ b/plugins/channelrx/demodft8/ft8demodworker.h @@ -24,7 +24,7 @@ #include #include "ft8.h" -#include "unpack.h" +#include "packing.h" class QDateTime; class MessageQueue; diff --git a/sdrbench/CMakeLists.txt b/sdrbench/CMakeLists.txt index f3d414f28..6a5546423 100644 --- a/sdrbench/CMakeLists.txt +++ b/sdrbench/CMakeLists.txt @@ -10,6 +10,7 @@ set(sdrbench_SOURCES test_golay2312.cpp test_ft8.cpp test_callsign.cpp + test_ft8protocols.cpp ) set(sdrbench_HEADERS diff --git a/sdrbench/mainbench.cpp b/sdrbench/mainbench.cpp index 08969d381..8544ec083 100644 --- a/sdrbench/mainbench.cpp +++ b/sdrbench/mainbench.cpp @@ -71,6 +71,8 @@ void MainBench::run() testFT8(m_parser.getFileName(), m_parser.getArgsStr()); } else if (m_parser.getTestType() == ParserBench::TestCallsign) { testCallsign(m_parser.getArgsStr()); + } else if (m_parser.getTestType() == ParserBench::TestFT8Protocols) { + testFT8Protocols(m_parser.getArgsStr()); } else { qDebug() << "MainBench::run: unknown test type: " << m_parser.getTestType(); } diff --git a/sdrbench/mainbench.h b/sdrbench/mainbench.h index e816af6a3..c2417d9d8 100644 --- a/sdrbench/mainbench.h +++ b/sdrbench/mainbench.h @@ -58,6 +58,7 @@ private: void testDecimateFF(); void testGolay2312(); void testFT8(const QString& wavFile, const QString& argsStr); //!< use with sdrbench/samples/ft8/230105_091630.wav in -f option + void testFT8Protocols(const QString& argsStr); void testCallsign(const QString& argsStr); void decimateII(const qint16 *buf, int len); void decimateInfII(const qint16 *buf, int len); diff --git a/sdrbench/parserbench.cpp b/sdrbench/parserbench.cpp index 024a74291..f38d1ebe2 100644 --- a/sdrbench/parserbench.cpp +++ b/sdrbench/parserbench.cpp @@ -24,7 +24,7 @@ ParserBench::ParserBench() : m_testOption(QStringList() << "t" << "test", - "Test type: decimateii, decimatefi, decimateff, decimateif, decimateinfii, decimatesupii, ambe, golay2312, ft8, callsign" + "Test type: decimateii, decimatefi, decimateff, decimateif, decimateinfii, decimatesupii, ambe, golay2312, ft8, ft8protocols, callsign" "test", "decimateii"), m_nbSamplesOption(QStringList() << "n" << "nb-samples", @@ -149,6 +149,8 @@ ParserBench::TestType ParserBench::getTestType() const return TestFT8; } else if (m_testStr == "callsign") { return TestCallsign; + } else if (m_testStr == "ft8protocols") { + return TestFT8Protocols; } else { return TestDecimatorsII; } diff --git a/sdrbench/parserbench.h b/sdrbench/parserbench.h index 5723bad92..05476ce61 100644 --- a/sdrbench/parserbench.h +++ b/sdrbench/parserbench.h @@ -39,7 +39,8 @@ public: TestDecimatorsSupII, TestGolay2312, TestFT8, - TestCallsign + TestCallsign, + TestFT8Protocols } TestType; ParserBench(); diff --git a/sdrbench/test_ft8.cpp b/sdrbench/test_ft8.cpp index 6774cabcd..c71df6b5e 100644 --- a/sdrbench/test_ft8.cpp +++ b/sdrbench/test_ft8.cpp @@ -34,7 +34,7 @@ void MainBench::testFT8(const QString& wavFile, const QString& argsStr) #else #include "ft8/ft8.h" -#include "ft8/unpack.h" +#include "ft8/packing.h" class TestFT8Callback : public FT8::CallbackInterface { diff --git a/sdrbench/test_ft8protocols.cpp b/sdrbench/test_ft8protocols.cpp new file mode 100644 index 000000000..654336a19 --- /dev/null +++ b/sdrbench/test_ft8protocols.cpp @@ -0,0 +1,233 @@ +/////////////////////////////////////////////////////////////////////////////////// +// Copyright (C) 2024 Edouard Griffiths, F4EXB // +// // +// This program 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 as version 3 of the License, or // +// (at your option) any later version. // +// // +// This program 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 V3 for more details. // +// // +// You should have received a copy of the GNU General Public License // +// along with this program. If not, see . // +/////////////////////////////////////////////////////////////////////////////////// + +#include +#include +#include + +#include + +#include "mainbench.h" + +#ifndef HAS_FT8 +void MainBench::testFT8(const QString& wavFile, const QString& argsStr) +{ + (void) wavFile; + (void) argsStr; + qWarning("MainBench::testFT8: this version has no FT8 support"); +} +#else + +#include "ft8/ft8.h" +#include "ft8/packing.h" +#include "ft8/pack0.h" + +class TestFT8Protocols +{ + public: + static void testMsg1(const QStringList& argElements, bool runLDPC = false); + static void testMsg00(const QStringList& argElements, bool runLDPC = false); + + private: + static bool testLDPC(int a77[]); + static bool compare174(int a174[], int r174[]); + static void debugIntArray(int a[], int length); +}; + + +void MainBench::testFT8Protocols(const QString& argsStr) +{ + QStringList argElements = argsStr.split(','); // comma separated list of arguments + + if (argElements.size() == 0) + { + qWarning("MainBench::testFT8Protocols: no arguments"); + return; + } + + QString& testType = argElements[0]; + + if (testType == "msg1") { + TestFT8Protocols::testMsg1(argElements); // type 1 message test + } else if (testType == "msg00") { + TestFT8Protocols::testMsg00(argElements); // type 0.0 message test + } else if (testType == "msg1L") { + TestFT8Protocols::testMsg1(argElements, true); // type 1 message test with LDPC encoding/decoding test + } else if (testType == "msg00L") { + TestFT8Protocols::testMsg00(argElements, true); // type 0.0 message test with LDPC encoding/decoding test + } else { + qWarning("MainBench::testFT8Protocols: unrecognized test type"); + } +} + + +void TestFT8Protocols::testMsg1(const QStringList& argElements, bool runLDPC) +{ + if (argElements.size() < 4) + { + qWarning("TestFT8Protocols::testMsg1: missing callsigns and locator/report in argument"); + return; + } + + int c28_1, c28_2, g15; + + if (!FT8::Packing::packcall_std(c28_1, argElements[1].toStdString())) + { + qWarning("TestFT8Protocols::testMsg1: callsign %s is not a standard callsign", qPrintable(argElements[1])); + return; + } + + if (!FT8::Packing::packcall_std(c28_2, argElements[2].toStdString())) + { + qWarning("TestFT8Protocols::testMsg1: callsign %s is not a standard callsign", qPrintable(argElements[2])); + return; + } + + + std::string locstr; + int report; + + if (argElements[3].startsWith("R+") || argElements[3].startsWith("R-")) + { + report = 1; + locstr = argElements[3].mid(1).toStdString(); + } + else + { + report = 0; + locstr = argElements[3].toStdString(); + } + + if (!FT8::Packing::packgrid(g15, locstr)) + { + qWarning("TestFT8Protocols::testMsg1: locator or report %s is not valid", locstr.c_str()); + return; + } + + qDebug("TestFT8Protocols::testMsg1: c28_1: %d c28_2: %d g15: %d", c28_1, c28_2, g15); + + int a77[77]; + std::fill(a77, a77 + 77, 0); + + FT8::pa64(a77, 0, 28, c28_1); + FT8::pa64(a77, 28+1, 28, c28_2); + a77[28+1+28+1] = report; + FT8::pa64(a77, 28+1+28+2, 15, g15); + FT8::pa64(a77, 28+1+28+2+15, 3, 1); + + FT8::Packing packing; + + std::string call1, call2, loc; + std::string msg = packing.unpack_1(a77, call1, call2, loc); + qInfo("TestFT8Protocols::testMsg1: msg: %s, call1: %s, call2: %s, loc: %s", msg.c_str(), call1.c_str(), call2.c_str(), loc.c_str()); + + + if (runLDPC) + { + if (testLDPC(a77)) { + qInfo("TestFT8Protocols::testMsg1: LDPC test suceeded"); + } else { + qWarning("TestFT8Protocols::testMsg1: LDPC test failed"); + } + } +} + +void TestFT8Protocols::testMsg00(const QStringList& argElements, bool runLDPC) +{ + if (argElements.size() < 2) + { + qWarning("TestFT8Protocols::testMsg00: missing free text in argument"); + return; + } + + int a77[77]; + std::fill(a77, a77 + 77, 0); + + if (!FT8::Packing::packfree(a77, argElements[1].toStdString())) + { + qWarning("TestFT8Protocols::testMsg00: message %s is not valid", qPrintable(argElements[1])); + return; + } + + std::string call1, call2, loc; + std::string msg = FT8::Packing::unpack_0_0(a77, call1, call2, loc); + qInfo("TestFT8Protocols::testMsg00: msg: %s, call1: %s", msg.c_str(), call1.c_str()); + + if (runLDPC) + { + if (testLDPC(a77)) { + qInfo("TestFT8Protocols::testMsg00: LDPC test suceeded"); + } else { + qWarning("TestFT8Protocols::testMsg00: LDPC test failed"); + } + } +} + +bool TestFT8Protocols::testLDPC(int a77[]) +{ + int a174[174], r174[174]; + FT8::FT8::encode(a174, a77); + FT8::FT8Params ft8Params; + float ll174[174]; + FT8::FT8Params params; + std::string comments; + + std::transform( + a174, + a174+174, + ll174, + [](const int& s) -> float { return s == 1 ? -1.0 : 1.0; } + ); + + if (FT8::FT8::decode(ll174, r174, params, 0, comments) == 0) + { + qInfo("TestFT8Protocols::testLDPC(: LDPC or CRC check failed"); + return false; + } + else + { + return compare174(a174, r174); + } +} + +bool TestFT8Protocols::compare174(int a174[], int r174[]) +{ + for (int i=0; i < 174; i++) + { + if (a174[i] != r174[i]) + { + qDebug("TestFT8Protocols::compare174: failed at index %d: %d != %d", i, a174[i], r174[i]); + return false; + } + } + + return true; +} + +void TestFT8Protocols::debugIntArray(int a[], int length) +{ + QString s; + QTextStream os(&s); + + for (int i=0; i < length; i++) { + os << a[i] << " "; + } + + qDebug("TestFT8Protocols::debugIntArray: %s", qPrintable(s)); +} + +#endif