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sdrangel/plugins/channelrx/remotesink/remotesinkthread.cpp
2019-04-15 15:39:57 +02:00

191 lines
6.7 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2018-2019 Edouard Griffiths, F4EXB. //
// //
// Remote sink channel (Rx) UDP sender thread //
// //
// SDRangel can work as a detached SDR front end. With this plugin it can //
// sends the I/Q samples stream to another SDRangel instance via UDP. //
// It is controlled via a Web REST API. //
// //
// 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 "remotesinkthread.h"
#include <channel/remotedatablock.h>
#include <QUdpSocket>
#include "cm256cc/cm256.h"
MESSAGE_CLASS_DEFINITION(RemoteSinkThread::MsgStartStop, Message)
RemoteSinkThread::RemoteSinkThread(QObject* parent) :
QThread(parent),
m_running(false),
m_address(QHostAddress::LocalHost),
m_socket(0)
{
m_cm256p = m_cm256.isInitialized() ? &m_cm256 : 0;
connect(&m_inputMessageQueue, SIGNAL(messageEnqueued()), this, SLOT(handleInputMessages()), Qt::QueuedConnection);
}
RemoteSinkThread::~RemoteSinkThread()
{
qDebug("RemoteSinkThread::~RemoteSinkThread");
}
void RemoteSinkThread::startStop(bool start)
{
MsgStartStop *msg = MsgStartStop::create(start);
m_inputMessageQueue.push(msg);
}
void RemoteSinkThread::startWork()
{
qDebug("RemoteSinkThread::startWork");
m_startWaitMutex.lock();
m_socket = new QUdpSocket(this);
start();
while(!m_running)
m_startWaiter.wait(&m_startWaitMutex, 100);
m_startWaitMutex.unlock();
}
void RemoteSinkThread::stopWork()
{
qDebug("RemoteSinkThread::stopWork");
delete m_socket;
m_socket = 0;
m_running = false;
wait();
}
void RemoteSinkThread::run()
{
qDebug("RemoteSinkThread::run: begin");
m_running = true;
m_startWaiter.wakeAll();
while (m_running)
{
sleep(1); // Do nothing as everything is in the data handler (dequeuer)
}
m_running = false;
qDebug("RemoteSinkThread::run: end");
}
void RemoteSinkThread::processDataBlock(RemoteDataBlock *dataBlock)
{
handleDataBlock(*dataBlock);
delete dataBlock;
}
void RemoteSinkThread::handleDataBlock(RemoteDataBlock& dataBlock)
{
CM256::cm256_encoder_params cm256Params; //!< Main interface with CM256 encoder
CM256::cm256_block descriptorBlocks[256]; //!< Pointers to data for CM256 encoder
RemoteProtectedBlock fecBlocks[256]; //!< FEC data
uint16_t frameIndex = dataBlock.m_txControlBlock.m_frameIndex;
int nbBlocksFEC = dataBlock.m_txControlBlock.m_nbBlocksFEC;
int txDelay = dataBlock.m_txControlBlock.m_txDelay;
m_address.setAddress(dataBlock.m_txControlBlock.m_dataAddress);
uint16_t dataPort = dataBlock.m_txControlBlock.m_dataPort;
RemoteSuperBlock *txBlockx = dataBlock.m_superBlocks;
if ((nbBlocksFEC == 0) || !m_cm256p) // Do not FEC encode
{
if (m_socket)
{
for (int i = 0; i < RemoteNbOrginalBlocks; i++)
{
// send block via UDP
m_socket->writeDatagram((const char*)&txBlockx[i], (qint64 ) RemoteUdpSize, m_address, dataPort);
usleep(txDelay);
}
}
}
else
{
cm256Params.BlockBytes = sizeof(RemoteProtectedBlock);
cm256Params.OriginalCount = RemoteNbOrginalBlocks;
cm256Params.RecoveryCount = nbBlocksFEC;
// Fill pointers to data
for (int i = 0; i < cm256Params.OriginalCount + cm256Params.RecoveryCount; ++i)
{
if (i >= cm256Params.OriginalCount) {
memset((void *) &txBlockx[i].m_protectedBlock, 0, sizeof(RemoteProtectedBlock));
}
txBlockx[i].m_header.m_frameIndex = frameIndex;
txBlockx[i].m_header.m_blockIndex = i;
txBlockx[i].m_header.m_sampleBytes = (SDR_RX_SAMP_SZ <= 16 ? 2 : 4);
txBlockx[i].m_header.m_sampleBits = SDR_RX_SAMP_SZ;
descriptorBlocks[i].Block = (void *) &(txBlockx[i].m_protectedBlock);
descriptorBlocks[i].Index = txBlockx[i].m_header.m_blockIndex;
}
// Encode FEC blocks
if (m_cm256p->cm256_encode(cm256Params, descriptorBlocks, fecBlocks))
{
qWarning("RemoteSinkThread::handleDataBlock: CM256 encode failed. No transmission.");
// TODO: send without FEC changing meta data to set indication of no FEC
}
// Merge FEC with data to transmit
for (int i = 0; i < cm256Params.RecoveryCount; i++)
{
txBlockx[i + cm256Params.OriginalCount].m_protectedBlock = fecBlocks[i];
}
// Transmit all blocks
if (m_socket)
{
for (int i = 0; i < cm256Params.OriginalCount + cm256Params.RecoveryCount; i++)
{
// send block via UDP
m_socket->writeDatagram((const char*)&txBlockx[i], (qint64 ) RemoteUdpSize, m_address, dataPort);
usleep(txDelay);
}
}
}
dataBlock.m_txControlBlock.m_processed = true;
}
void RemoteSinkThread::handleInputMessages()
{
Message* message;
while ((message = m_inputMessageQueue.pop()) != 0)
{
if (MsgStartStop::match(*message))
{
MsgStartStop* notif = (MsgStartStop*) message;
qDebug("RemoteSinkThread::handleInputMessages: MsgStartStop: %s", notif->getStartStop() ? "start" : "stop");
if (notif->getStartStop()) {
startWork();
} else {
stopWork();
}
delete message;
}
}
}