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Remove ITPP Dependencies; #331

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Rework P25p1 NID code from KA1RBI's OP25 code;

Remove ITPP Cmake, build config scripts, docs, etc.
This commit is contained in:
lwvmobile
2026-01-04 20:31:30 -05:00
parent 53eaccc892
commit a5e000a14c
15 changed files with 163 additions and 137 deletions
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5
CMakeLists.txt
View File

@@ -52,14 +52,13 @@ git_describe(GIT_TAG)
find_package(LibSndFile REQUIRED)
find_package(MBE REQUIRED)
find_package(ITPP REQUIRED)
find_package(RTLSDR)
find_package(Curses REQUIRED)
find_package(PulseAudio REQUIRED)
find_package(CODEC2)
include_directories(SYSTEM ${LIBSNDFILE_INCLUDE_DIR} ${MBE_INCLUDE_DIR} ${ITPP_INCLUDE_DIR} ${PULSEAUDIO_INCLUDE_DIRS} ${CURSES_INCLUDE_DIRS})
set(LIBS ${MBE_LIBRARY} ${LIBSNDFILE_LIBRARY} ${ITPP_LIBRARY} ${PULSEAUDIO_SIMPLE_LIBRARY} ${PULSEAUDIO_LIBRARY} ${CURSES_LIBRARIES})
include_directories(SYSTEM ${LIBSNDFILE_INCLUDE_DIR} ${MBE_INCLUDE_DIR} ${PULSEAUDIO_INCLUDE_DIRS} ${CURSES_INCLUDE_DIRS})
set(LIBS ${MBE_LIBRARY} ${LIBSNDFILE_LIBRARY} ${PULSEAUDIO_SIMPLE_LIBRARY} ${PULSEAUDIO_LIBRARY} ${CURSES_LIBRARIES})
if(RTLSDR_FOUND)
find_package(Threads)

15
cmake/FindITPP.cmake
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@@ -1,15 +0,0 @@
# - Try to find ITPP
# Once done this will define
#
# ITPP_FOUND - System has ITPP
# ITPP_INCLUDE_DIR - The ITPP include directory
# ITPP_LIBRARY - The library needed to use ITPP
#
find_path(ITPP_INCLUDE_DIR itpp/itcomm.h)
set(ITPP_NAMES ${ITPP_NAMES} itpp libitpp libitpp.dll)
FIND_LIBRARY(ITPP_LIBRARY NAMES ${ITPP_NAMES})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(ITPP DEFAULT_MSG ITPP_LIBRARY ITPP_INCLUDE_DIR)

1
cyg_portable.sh
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@@ -98,7 +98,6 @@ if [ "$RELEASE" = "y" ]; then
#compiled items into release dsd-fme folder
cp codec2/build/src/cygcodec2* dsd-fme-portable/dsd-fme/
cp itpp-4.3.1/build/itpp/cygitpp* dsd-fme-portable/dsd-fme/
cp rtl-sdr/build/src/cyg* dsd-fme-portable/dsd-fme/
cp mbelib/build/cygmbe* dsd-fme-portable/dsd-fme/

5
download-and-install-Arch.sh
View File

@@ -17,11 +17,6 @@ if [ "$ANSWER" = "y" ]; then
sudo pacman -Syu #always run a full update first, partial upgrades aren't supported in Arch -- including downloading dependencies, that may require an updated dependency, and breaks same dependency on another package, a.k.a, dependency hell
sudo pacman -S libpulse cmake ncurses lapack perl fftw rtl-sdr codec2 base-devel libsndfile git wget
printf "Installing itpp 4.3.1 from Arch Strike --Tested on Arch 2023.08.01 and Manjaro XFCE 22.1.3 Minimal\n"
wget https://mirror.archstrike.org/x86_64/archstrike/itpp-4.3.1-3-x86_64.pkg.tar.xz
sudo pacman -U itpp-4.3.1-3-x86_64.pkg.tar.xz
sudo rm -R itpp-4.3.1-3-x86_64.pkg.tar.xz
git clone https://github.com/lwvmobile/mbelib
cd mbelib
git checkout ambe_tones

16
download-and-install-cygwin.sh
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@@ -19,22 +19,6 @@ if [ "$ANSWER" = "y" ]; then
export LD_LIBRARY_PATH
echo $LD_LIBRARY_PATH
#ITPP
cd $cdir
printf "Installing itpp 4.3.1 from source http://sourceforge.net/projects/itpp/files/latest/download?source=files\n Please wait!\n"
wget -O itpp-latest.tar.bz2 http://sourceforge.net/projects/itpp/files/latest/download?source=files
tar xjf itpp-latest.tar.bz2
cd itpp-4.3.1/
#newer Cygwin has Cmake 4.1.3 (or newer) so we need to replace the line with cmake_minimum_required to a newer version
#this doesn't seem to break anything, its just that cmake will refuse to run properly without a newer min version in it
#I'm just going to use the version that is used for most all my other cmake projects, seems to still be okay with new cmake
sed -i '/^cmake_minimum_required *( *VERSION *2\.8\.6 *)$/c\cmake_minimum_required(VERSION 3.10.2)' CMakeLists.txt
mkdir build
cd build
cmake ..
make -j $(nproc)
make install
#MBELIB
cd $cdir
printf "Installing mbelib\n Please wait!\n"

8
download-and-install-ubuntu2404lts.sh
View File

@@ -12,13 +12,7 @@ read -p "Have you viewed the patent notice? y/N " ANSWER
ANSWER=$(printf "$ANSWER"|tr '[:upper:]' '[:lower:]')
if [ "$ANSWER" = "y" ]; then
sudo apt update
sudo apt install libpulse-dev libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libitpp-dev libncurses-dev libncurses6 libcodec2-dev
chkitpp=$(dpkg -l libitpp-dev 2>/dev/null | awk '/^ii/ {print 1} END {if (NR == 0) print 0}')
if [ "$chkitpp" -lt "1" ];then
printf "\nFor some reason, ITPP did NOT install!\nYou may have to manually install it.\n\n"
read -p "Press Enter to exit..." x
exit 1
fi
sudo apt install libpulse-dev libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libncurses-dev libncurses6 libcodec2-dev
git clone https://github.com/lwvmobile/mbelib
cd mbelib
git checkout ambe_tones

8
download-and-install.sh
View File

@@ -12,13 +12,7 @@ read -p "Have you viewed the patent notice? y/N " ANSWER
ANSWER=$(printf "$ANSWER"|tr '[:upper:]' '[:lower:]')
if [ "$ANSWER" = "y" ]; then
sudo apt update
sudo apt install libpulse-dev libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev libncurses5 libncurses5-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libitpp-dev libncursesw5-dev libcodec2-dev
chkitpp=$(dpkg -l libitpp-dev 2>/dev/null | awk '/^ii/ {print 1} END {if (NR == 0) print 0}')
if [ "$chkitpp" -lt "1" ];then
printf "\nFor some reason, ITPP did NOT install!\nYou may have to manually install it.\n\n"
read -p "Press Enter to exit..." x
exit 1
fi
sudo apt install libpulse-dev libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev libncurses5 libncurses5-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libncursesw5-dev libcodec2-dev
git clone https://github.com/lwvmobile/mbelib
cd mbelib
git checkout ambe_tones

25
examples/Install_Notes.md
View File

@@ -43,9 +43,9 @@ Debian/Mint/Ubuntu/Pi
```
sudo apt update
#Ubuntu 22.04 lts / Debian 11 and lower
sudo apt install libpulse-dev pavucontrol libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev libncurses5 libncurses5-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libitpp-dev libcodec2-dev
sudo apt install libpulse-dev pavucontrol libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev libncurses5 libncurses5-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libcodec2-dev
#Ubuntu 24.04 lts / Debian 12
#sudo apt install libpulse-dev pavucontrol libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libitpp-dev libncurses-dev libncurses6 libcodec2-dev
#sudo apt install libpulse-dev pavucontrol libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libncurses-dev libncurses6 libcodec2-dev
```
Fedora 36/37 -- from https://github.com/lwvmobile/dsd-fme/issues/99
@@ -60,8 +60,6 @@ Arch -- https://github.com/lwvmobile/dsd-fme/issues/153 and https://github.com/l
```
sudo pacman -Syu
sudo pacman -S libpulse cmake ncurses lapack perl fftw rtl-sdr codec2 base-devel libsndfile git wget rtl-sdr
wget https://mirror.archstrike.org/x86_64/archstrike/itpp-4.3.1-3-x86_64.pkg.tar.xz
sudo pacman -U itpp-4.3.1-3-x86_64.pkg.tar.xz
```
## Headless Ubuntu Server/Pi
@@ -69,24 +67,7 @@ sudo pacman -U itpp-4.3.1-3-x86_64.pkg.tar.xz
If running headless, swap out pavucontrol for pulsemixer, and also install pulseaudio as well. Attempting to install pavucontrol in a headless environment may attempt to install a minimal desktop environment. Note: Default behavior of pulseaudio in a headless environment may be to be muted, so check by opening pulsemixer and unmuting and routing audio appropriately.
```
sudo apt install libpulse-dev libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev libncurses5 libncurses5-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libitpp-dev libncursesw5-dev pulsemixer pulseaudio libcodec2-dev
```
### Build and Install ITPP - ONLY IF NOT IN REPO!!
```
wget -O itpp-latest.tar.bz2 http://sourceforge.net/projects/itpp/files/latest/download?source=files
tar xjf itpp*
#if you can't cd into this folder, double check folder name first
cd itpp-4.3.1
mkdir build
cd build
cmake ..
make -j `nproc`
sudo make install
sudo ldconfig
cd ..
cd ..
sudo apt install libpulse-dev libsndfile1-dev libfftw3-dev liblapack-dev socat libusb-1.0-0-dev libncurses5 libncurses5-dev rtl-sdr librtlsdr-dev libusb-1.0-0-dev cmake git wget make build-essential libncursesw5-dev pulsemixer pulseaudio libcodec2-dev
```
MBELib is considered a requirement in this build. You must read this notice prior to continuing. [MBElib Patent Notice](https://github.com/lwvmobile/mbelib#readme "MBElib Patent Notice")

2
include/Golay24.hpp
View File

@@ -7,8 +7,6 @@
*
* Code adapted from http://www.aqdi.com/golay.htm
*
* Tried before with the implementation from ITPP library but couldn't make it produce the same outputs
* expected from the P25 transmissions that I have tested. This implementation does work.
*/
#include <stdio.h>

3
include/ReedSolomon.hpp
View File

@@ -5,9 +5,6 @@
/**
* Code taken and adapted from www.eccpage.com/rs.c
* Credit goes to Mr Simon Rockliff.
*
* Tried before with the implementation from ITPP library but couldn't make it produce the same outputs
* expected from the P25 transmissions that I have tested. This implementation does work.
*/
/* This program is an encoder/decoder for Reed-Solomon codes. Encoding is in

3
include/dsd.h
View File

@@ -1671,6 +1671,9 @@ int ez_rs28_facch (int payload[156], int parity[114]); //ezpwd bridge for FME
int ez_rs28_sacch (int payload[180], int parity[132]); //ezpwd bridge for FME
int isch_lookup (uint64_t isch); //isch map lookup
//Phase 1 NID Check
int check_NID(char* bch_code, int* new_nac, char* new_duid, unsigned char parity);
#ifdef __cplusplus
}
#endif

26
include/p25p1_check_nid.h
View File

@@ -1,26 +0,0 @@
#ifndef P25P1_CHECK_NID_H_3af071e917ea43fdb51326e2cbfbde0a
#define P25P1_CHECK_NID_H_3af071e917ea43fdb51326e2cbfbde0a
#ifdef __cplusplus
extern "C" {
#endif
/**
* Checks a NID value, returns the fixed NAC, DUID and also an indication if it failed to decode the NID.
* \param bch_code Input. An array to the 63 bytes, each containing one bit of the NID. This includes the
* NAC (12 bits), DUID (4 bits) and 47 bits of BCH parity.
* \param new_nac Output. An address where to store the calculated NAC value after error correction. Should
* be large enough to accommodate for an integer.
* \param new_duid Output. An address where to store the calculated DUID value after error correction. Should
* be able to accommodate 3 chars.
* \param parity Input. The parity value read.
* \return 0 if there were errors processing the NID.
*/
int check_NID(char* bch_code, int* new_nac, char* new_duid, unsigned char parity);
#ifdef __cplusplus
}
#endif
#endif // P25P1_CHECK_NID_H_3af071e917ea43fdb51326e2cbfbde0a

4
package.nix
View File

@@ -6,7 +6,6 @@
, ncurses
, pulseaudio
, rtl-sdr
, itpp
, codec2
, portaudioSupport ? true
, portaudio ? null
@@ -23,7 +22,6 @@ stdenv.mkDerivation {
buildInputs = [
mbelib
libsndfile
itpp
rtl-sdr
ncurses.dev
pulseaudio.dev
@@ -39,7 +37,7 @@ stdenv.mkDerivation {
tap audio and synthesize the decoded speech. Speech synthesis requires
mbelib, which is a separate package.
'';
homepage = "https://github.com/szechyjs/dsd";
homepage = "https://github.com/lwvmobile/dsd-fme";
license = licenses.mit;
platforms = platforms.unix;
};

2
src/dsd_frame.c
View File

@@ -20,8 +20,6 @@
#define NULL 0
#endif
#include "p25p1_check_nid.h"
void
printFrameInfo (dsd_opts * opts, dsd_state * state)
{

177
src/p25p1_check_nid.cpp
View File

@@ -1,17 +1,138 @@
#include <itpp/itcomm.h>
// BCH decoder implementation from OP25 (Copyright 2010, KA1RBI, GPL license)
#include "dsd.h"
#include "p25p1_check_nid.h"
#include <vector>
typedef std::vector<bool> bit_vector;
static const int bchGFexp[64] = {
1, 2, 4, 8, 16, 32, 3, 6, 12, 24, 48, 35, 5, 10, 20, 40,
19, 38, 15, 30, 60, 59, 53, 41, 17, 34, 7, 14, 28, 56, 51, 37,
9, 18, 36, 11, 22, 44, 27, 54, 47, 29, 58, 55, 45, 25, 50, 39,
13, 26, 52, 43, 21, 42, 23, 46, 31, 62, 63, 61, 57, 49, 33, 0
};
static const int bchGFlog[64] = {
-1, 0, 1, 6, 2, 12, 7, 26, 3, 32, 13, 35, 8, 48, 27, 18,
4, 24, 33, 16, 14, 52, 36, 54, 9, 45, 49, 38, 28, 41, 19, 56,
5, 62, 25, 11, 34, 31, 17, 47, 15, 23, 53, 51, 37, 44, 55, 40,
10, 61, 46, 30, 50, 22, 39, 43, 29, 60, 42, 21, 20, 59, 57, 58
};
using namespace itpp;
int bchDec(bit_vector& Codeword)
{
int elp[24][22], S[23];
int D[23], L[24], uLu[24];
int locn[11], reg[12];
int i, j, U, q, count;
int SynError, CantDecode;
// Ideas taken from http://op25.osmocom.org/trac/wiki.png/browser/op25/gr-op25/lib/decoder_ff_impl.cc
// See also p25_training_guide.pdf page 48.
// See also tia-102-baaa-a-project_25-fdma-common_air_interface.pdf page 40.
// BCH encoder/decoder implementation from IT++. GNU GPL 3 license.
SynError = 0; CantDecode = 0;
itpp::BCH bch(63, 16, 11, "6 3 3 1 1 4 1 3 6 7 2 3 5 4 5 3", true);
for (i = 1; i <= 22; i++) {
S[i] = 0;
for (j = 0; j <= 62; j++) {
if (Codeword[j]) {
S[i] = S[i] ^ bchGFexp[(i * j) % 63];
}
}
if (S[i]) { SynError = 1; }
S[i] = bchGFlog[S[i]];
}
if (SynError) { // if there are errors, try to correct them
L[0] = 0; uLu[0] = -1; D[0] = 0; elp[0][0] = 0;
L[1] = 0; uLu[1] = 0; D[1] = S[1]; elp[1][0] = 1;
for (i = 1; i <= 21; i++) {
elp[0][i] = -1; elp[1][i] = 0;
}
U = 0;
do {
U = U + 1;
if (D[U] == -1) {
L[U + 1] = L[U];
for (i = 0; i <= L[U]; i++) {
elp[U + 1][i] = elp[U][i];
elp[U][i] = bchGFlog[elp[U][i]];
}
} else {
q = U - 1;
while ((D[q] == -1) && (q > 0)) { q = q - 1; }
if (q > 0) {
j = q;
do { j = j - 1; if ((D[j] != -1) && (uLu[q] < uLu[j])) { q = j; }
} while (j > 0);
}
if (L[U] > L[q] + U - q) {
L[U + 1] = L[U];
} else {
L[U + 1] = L[q] + U - q;
}
for (i = 0; i <= 21; i++) {
elp[U + 1][i] = 0;
}
for (i = 0; i <= L[q]; i++) {
if (elp[q][i] != -1) {
elp[U + 1][i + U - q] = bchGFexp[(D[U] + 63 - D[q] + elp[q][i]) % 63];
}
}
for (i = 0; i <= L[U]; i++) {
elp[U + 1][i] = elp[U + 1][i] ^ elp[U][i];
elp[U][i] = bchGFlog[elp[U][i]];
}
}
uLu[U + 1] = U - L[U + 1];
if (U < 22) {
if (S[U + 1] != -1) { D[U + 1] = bchGFexp[S[U + 1]]; } else { D[U + 1] = 0; }
for (i = 1; i <= L[U + 1]; i++) {
if ((S[U + 1 - i] != -1) && (elp[U + 1][i] != 0)) {
D[U + 1] = D[U + 1] ^ bchGFexp[(S[U + 1 - i] + bchGFlog[elp[U + 1][i]]) % 63];
}
}
D[U + 1] = bchGFlog[D[U + 1]];
}
} while ((U < 22) && (L[U + 1] <= 11));
U = U + 1;
if (L[U] <= 11) {
for (i = 0; i <= L[U]; i++) {
elp[U][i] = bchGFlog[elp[U][i]];
}
for (i = 1; i <= L[U]; i++) {
reg[i] = elp[U][i];
}
count = 0;
for (i = 1; i <= 63; i++) {
q = 1;
for (j = 1; j <= L[U]; j++) {
if (reg[j] != -1) {
reg[j] = (reg[j] + j) % 63;
q = q ^ bchGFexp[reg[j]];
}
}
if (q == 0) {
locn[count] = 63 - i;
count = count + 1;
}
}
if (count == L[U]) {
for (i = 0; i <= L[U] - 1; i++) {
Codeword[locn[i]] = Codeword[locn[i]] ^ 1;
}
CantDecode = count;
} else {
CantDecode = -1;
}
} else {
CantDecode = -2;
}
}
return CantDecode;
}
/**
* Convenience class to calculate the parity of the DUID values. Keeps a table with the expected outcomes
@@ -24,13 +145,13 @@ private:
unsigned char get_index(unsigned char x, unsigned char y)
{
return (x<<2) + y;
return (x << 2) + y;
}
public:
ParityTable()
{
for (unsigned int i=0; i<sizeof(table); i++) {
for (unsigned int i = 0; i < sizeof(table); i++) {
table[i] = 0;
}
table[get_index(1,1)] = 1;
@@ -39,9 +160,8 @@ public:
unsigned char get_value(unsigned char x, unsigned char y)
{
return table[get_index(x,y)];
return table[get_index(x, y)];
}
} parity_table;
int check_NID(char* bch_code, int* new_nac, char* new_duid, unsigned char parity)
@@ -49,31 +169,38 @@ int check_NID(char* bch_code, int* new_nac, char* new_duid, unsigned char parity
int result;
// Fill up with the given input
bvec input(63);
for(unsigned int i=0; i<63; i++) {
input[i] = bch_code[i];
bit_vector codeword(63);
for (unsigned int i = 0; i < 63; i++) {
codeword[i] = bch_code[62-i];
}
// Decode it
bvec decoded, cw_isvalid;
bool ok = bch.decode(input, decoded, cw_isvalid);
int errors = bchDec(codeword);
bool ok = (errors >= 0);
if (!ok) {
// Decode failed
// fprintf (stderr, "NID ERR: %d; ", errors);
result = 0;
} else {
//reload the codeword back into correct bit order
for (unsigned int i = 0; i < 63; i++) {
bch_code[i] = codeword[62-i];
}
for (unsigned int i = 0; i < 63; i++) {
codeword[i] = bch_code[i];
}
// Take the NAC from the decoded output. It's a 12 bit number starting from position 0.
// Just convert the output from a binary sequence to an integer.
int nac = 0;
for (int i=0; i<12; i++) {
for (int i = 0; i < 12; i++) {
nac <<= 1;
nac |= (int)decoded[i];
nac |= (int)codeword[i];
}
*new_nac = nac;
// Take the fixed DUID from the encoded output. 4 bit value starting at position 12.
unsigned char new_duid_0 = (((int)decoded[12])<<1) + ((int)decoded[13]);
unsigned char new_duid_1 = (((int)decoded[14])<<1) + ((int)decoded[15]);
unsigned char new_duid_0 = (((int)codeword[12]) << 1) + ((int)codeword[13]);
unsigned char new_duid_1 = (((int)codeword[14]) << 1) + ((int)codeword[15]);
new_duid[0] = new_duid_0 + '0';
new_duid[1] = new_duid_1 + '0';
new_duid[2] = 0; // Null terminate
@@ -82,12 +209,12 @@ int check_NID(char* bch_code, int* new_nac, char* new_duid, unsigned char parity
unsigned char expected_parity = parity_table.get_value(new_duid_0, new_duid_1);
if (expected_parity != parity) {
// Ignore, not sure what to do
//fprintf (stderr, "Error in parity detected?");
// Parity mismatch – optional handling
// fprintf(stderr, "Error in parity detected?\n");
}
result = 1;
}
return result;
}
}