mirror of
https://github.com/f4exb/sdrangel.git
synced 2025-11-03 21:20:31 -05:00
Add worker source
This commit is contained in:
Jon Beniston
parent
ff26ece347
commit
3287346a7e
159
plugins/channelrx/demoddatv/ldpctool/ldpcworker.cpp
Normal file
159
plugins/channelrx/demoddatv/ldpctool/ldpcworker.cpp
Normal file
@ -0,0 +1,159 @@
|
||||
/*
|
||||
LDPC testbench
|
||||
Copyright 2018 Ahmet Inan <xdsopl@gmail.com>
|
||||
|
||||
Transformed into external decoder for third-party applications
|
||||
Copyright 2019 <pabr@pabr.org>
|
||||
|
||||
Transformed again in to a Qt worker.
|
||||
*/
|
||||
|
||||
#include <QDebug>
|
||||
|
||||
#include <stdlib.h>
|
||||
#ifdef _MSC_VER
|
||||
#include <malloc.h>
|
||||
#endif
|
||||
#include <iostream>
|
||||
#include <iomanip>
|
||||
#include <random>
|
||||
#include <cmath>
|
||||
#include <cassert>
|
||||
#include <chrono>
|
||||
#include <cstring>
|
||||
#include <algorithm>
|
||||
#include <functional>
|
||||
#include "ldpcworker.h"
|
||||
|
||||
LDPCWorker::LDPCWorker(int modcod, int maxTrials, int batchSize, bool shortFrames) :
|
||||
m_maxTrials(maxTrials),
|
||||
m_aligned_buffer(nullptr),
|
||||
m_ldpc(nullptr),
|
||||
m_code(nullptr),
|
||||
m_simd(nullptr)
|
||||
{
|
||||
// DVB-S2 MODCOD definitions
|
||||
static const char *mc_tabnames[2][32] = { // [shortframes][modcod]
|
||||
{// Normal frames
|
||||
0, "B1", "B2", "B3", "B4", "B5", "B6", "B7",
|
||||
"B8", "B9", "B10", "B11", "B5", "B6", "B7", "B9",
|
||||
"B10", "B11", "B6", "B7", "B8", "B9", "B10", "B11",
|
||||
"B7", "B8", "B8", "B10", "B11", 0, 0, 0},
|
||||
{// Short frames
|
||||
0, "C1", "C2", "C3", "C4", "C5", "C6", "C7",
|
||||
"C8", "C9", "C10", 0, "C5", "C6", "C7", "C9",
|
||||
"C10", 0, "C6", "C7", "C8", "C9", "C10", 0,
|
||||
"C7", "C8", "C8", "C10", 0, 0, 0, 0}};
|
||||
|
||||
const char *tabname = mc_tabnames[shortFrames][modcod];
|
||||
if (!tabname)
|
||||
{
|
||||
qCritical() << "LDPCWorker::LDPCWorker: unsupported modcod";
|
||||
return;
|
||||
}
|
||||
|
||||
m_ldpc = ldpctool::create_ldpc((char *)"S2", tabname[0], atoi(tabname + 1));
|
||||
|
||||
if (!m_ldpc)
|
||||
{
|
||||
qCritical() << "LDPCWorker::LDPCWorker: no such table!";
|
||||
return;
|
||||
}
|
||||
|
||||
m_codeLen = m_ldpc->code_len();
|
||||
m_dataLen = m_ldpc->data_len();
|
||||
|
||||
m_decode.init(m_ldpc);
|
||||
|
||||
BLOCKS = batchSize;
|
||||
m_code = new ldpctool::code_type[BLOCKS * m_codeLen];
|
||||
m_aligned_buffer = ldpctool::LDPCUtil::aligned_malloc(sizeof(ldpctool::simd_type), sizeof(ldpctool::simd_type) * m_codeLen);
|
||||
m_simd = reinterpret_cast<ldpctool::simd_type *>(m_aligned_buffer);
|
||||
|
||||
// Expect LLR values in int8_t format.
|
||||
if (sizeof(ldpctool::code_type) != 1) {
|
||||
qCritical() << "LDPCWorker::LDPCWorker: Unsupported code_type";
|
||||
}
|
||||
}
|
||||
|
||||
LDPCWorker::~LDPCWorker()
|
||||
{
|
||||
m_condOut.wakeAll();
|
||||
delete m_ldpc;
|
||||
|
||||
ldpctool::LDPCUtil::aligned_free(m_aligned_buffer);
|
||||
delete[] m_code;
|
||||
}
|
||||
|
||||
void LDPCWorker::process(QByteArray data)
|
||||
{
|
||||
int trials_count = 0;
|
||||
int max_count = 0;
|
||||
int num_decodes = 0;
|
||||
|
||||
int iosize = m_codeLen * sizeof(*m_code);
|
||||
|
||||
m_mutexIn.lock();
|
||||
m_dataIn.append(data);
|
||||
|
||||
if (m_dataIn.size() >= BLOCKS)
|
||||
{
|
||||
for (int j = 0; j < BLOCKS; j++)
|
||||
{
|
||||
QByteArray inputData = m_dataIn.takeAt(0);
|
||||
memcpy(m_code + j * m_codeLen, inputData.data(), inputData.size());
|
||||
}
|
||||
m_mutexIn.unlock();
|
||||
|
||||
for (int j = 0; j < BLOCKS; j += ldpctool::SIMD_WIDTH)
|
||||
{
|
||||
int blocks = j + ldpctool::SIMD_WIDTH > BLOCKS ? BLOCKS - j : ldpctool::SIMD_WIDTH;
|
||||
|
||||
for (int n = 0; n < blocks; ++n)
|
||||
for (int i = 0; i < m_codeLen; ++i)
|
||||
reinterpret_cast<ldpctool::code_type *>(m_simd + i)[n] = m_code[(j + n) * m_codeLen + i];
|
||||
|
||||
int count = m_decode(m_simd, m_simd + m_dataLen, m_maxTrials, blocks);
|
||||
num_decodes++;
|
||||
|
||||
if (count < 0)
|
||||
{
|
||||
trials_count += m_maxTrials;
|
||||
max_count++;
|
||||
}
|
||||
else
|
||||
{
|
||||
trials_count += m_maxTrials - count;
|
||||
}
|
||||
|
||||
if (num_decodes == 20)
|
||||
{
|
||||
qDebug() << "ldpc_tool: trials: " << ((trials_count*100)/(num_decodes*m_maxTrials)) << "% max: "
|
||||
<< ((max_count*100)/num_decodes) << "% at converging to a code word (max trials: " << m_maxTrials << ")";
|
||||
trials_count = 0;
|
||||
max_count = 0;
|
||||
num_decodes = 0;
|
||||
}
|
||||
|
||||
for (int n = 0; n < blocks; ++n)
|
||||
for (int i = 0; i < m_codeLen; ++i)
|
||||
m_code[(j + n) * m_codeLen + i] = reinterpret_cast<ldpctool::code_type *>(m_simd + i)[n];
|
||||
}
|
||||
|
||||
for (int i = 0; i < BLOCKS * m_codeLen; ++i)
|
||||
assert(!std::isnan(m_code[i]));
|
||||
|
||||
m_mutexOut.lock();
|
||||
for (int j = 0; j < BLOCKS; j++)
|
||||
{
|
||||
QByteArray outputData((const char *)m_code + j * m_codeLen, iosize);
|
||||
m_dataOut.append(outputData);
|
||||
}
|
||||
m_condOut.wakeAll();
|
||||
m_mutexOut.unlock();
|
||||
}
|
||||
else
|
||||
{
|
||||
m_mutexIn.unlock();
|
||||
}
|
||||
}
|
||||
94
plugins/channelrx/demoddatv/ldpctool/ldpcworker.h
Normal file
94
plugins/channelrx/demoddatv/ldpctool/ldpcworker.h
Normal file
@ -0,0 +1,94 @@
|
||||
///////////////////////////////////////////////////////////////////////////////////
|
||||
// Copyright (C) 2022 Jon Beniston, M7RCE //
|
||||
// //
|
||||
// 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 <http://www.gnu.org/licenses/>. //
|
||||
///////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#include <QObject>
|
||||
#include <QByteArray>
|
||||
#include <QMutex>
|
||||
#include <QWaitCondition>
|
||||
|
||||
#include "testbench.h"
|
||||
#include "algorithms.h"
|
||||
#include "ldpc.h"
|
||||
#include "layered_decoder.h"
|
||||
|
||||
class LDPCWorker : public QObject {
|
||||
Q_OBJECT
|
||||
|
||||
public:
|
||||
LDPCWorker(int modcod, int maxTrials, int batchSize, bool shortFrames);
|
||||
~LDPCWorker();
|
||||
|
||||
// Are we busy
|
||||
bool busy()
|
||||
{
|
||||
QMutexLocker locker(&m_mutexIn);
|
||||
return m_dataIn.size() >= BLOCKS;
|
||||
}
|
||||
|
||||
// Is processed data available?
|
||||
bool dataAvailable()
|
||||
{
|
||||
QMutexLocker locker(&m_mutexOut);
|
||||
return !m_dataOut.isEmpty();
|
||||
}
|
||||
|
||||
// Get processed data
|
||||
QByteArray data()
|
||||
{
|
||||
m_mutexOut.lock();
|
||||
if (m_dataOut.isEmpty()) {
|
||||
m_condOut.wait(&m_mutexOut);
|
||||
}
|
||||
QByteArray data = m_dataOut.takeAt(0);
|
||||
m_mutexOut.unlock();
|
||||
return data;
|
||||
}
|
||||
|
||||
public slots:
|
||||
void process(QByteArray data);
|
||||
|
||||
signals:
|
||||
void finished();
|
||||
|
||||
private:
|
||||
QMutex m_mutexIn;
|
||||
QMutex m_mutexOut;
|
||||
QWaitCondition m_condOut;
|
||||
QList<QByteArray> m_dataIn;
|
||||
QList<QByteArray> m_dataOut;
|
||||
int m_maxTrials;
|
||||
int BLOCKS;
|
||||
int m_codeLen;
|
||||
int m_dataLen;
|
||||
void *m_aligned_buffer;
|
||||
|
||||
ldpctool::LDPCInterface *m_ldpc;
|
||||
ldpctool::code_type *m_code;
|
||||
ldpctool::simd_type *m_simd;
|
||||
|
||||
typedef ldpctool::NormalUpdate<ldpctool::simd_type> update_type;
|
||||
//typedef SelfCorrectedUpdate<simd_type> update_type;
|
||||
|
||||
//typedef MinSumAlgorithm<simd_type, update_type> algorithm_type;
|
||||
//typedef OffsetMinSumAlgorithm<simd_type, update_type, FACTOR> algorithm_type;
|
||||
typedef ldpctool::MinSumCAlgorithm<ldpctool::simd_type, update_type, ldpctool::FACTOR> algorithm_type;
|
||||
//typedef LogDomainSPA<simd_type, update_type> algorithm_type;
|
||||
//typedef LambdaMinAlgorithm<simd_type, update_type, 3> algorithm_type;
|
||||
//typedef SumProductAlgorithm<simd_type, update_type> algorithm_type;
|
||||
|
||||
ldpctool::LDPCDecoder<ldpctool::simd_type, algorithm_type> m_decode;
|
||||
};
|
||||
Loading…
x
Reference in New Issue
Block a user