sdrangel/plugins/samplesink/remoteoutput/udpsinkfec.cpp

219 wiersze
8.0 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017 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 <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include "udpsinkfec.h"
#include <QThread>
#include <QDebug>
#include <boost/crc.hpp>
#include <boost/cstdint.hpp>
#include "util/timeutil.h"
#include "remoteoutputsender.h"
UDPSinkFEC::UDPSinkFEC() :
m_sampleRate(48000),
m_nbSamples(0),
m_nbBlocksFEC(0),
m_nbTxBytes(2),
m_txDelayRatio(0.0),
m_dataFrame(nullptr),
m_txBlockIndex(0),
m_frameCount(0),
m_sampleIndex(0),
m_remoteOutputSender(nullptr),
m_senderThread(nullptr),
m_remoteAddress("127.0.0.1"),
m_remotePort(9090)
{
memset((char *) &m_superBlock, 0, sizeof(RemoteSuperBlock));
m_currentMetaFEC.init();
m_senderThread = new QThread(this);
m_remoteOutputSender = new RemoteOutputSender();
m_remoteOutputSender->moveToThread(m_senderThread);
}
UDPSinkFEC::~UDPSinkFEC()
{
delete m_remoteOutputSender;
delete m_senderThread;
}
void UDPSinkFEC::init()
{
m_dataFrame = nullptr;
m_txBlockIndex = 0;
m_frameCount = 0;
m_sampleIndex = 0;
}
void UDPSinkFEC::startSender()
{
qDebug("UDPSinkFEC::startSender");
m_remoteOutputSender->setDestination(m_remoteAddress, m_remotePort);
m_senderThread->start();
}
void UDPSinkFEC::stopSender()
{
qDebug("UDPSinkFEC::stopSender");
m_senderThread->exit();
m_senderThread->wait();
}
void UDPSinkFEC::setNbBlocksFEC(uint32_t nbBlocksFEC)
{
qDebug() << "UDPSinkFEC::setNbBlocksFEC: nbBlocksFEC: " << nbBlocksFEC;
m_nbBlocksFEC = nbBlocksFEC;
}
void UDPSinkFEC::setSampleRate(uint32_t sampleRate)
{
qDebug() << "UDPSinkFEC::setSampleRate: sampleRate: " << sampleRate;
m_sampleRate = sampleRate;
}
void UDPSinkFEC::setRemoteAddress(const QString& address, uint16_t port)
{
qDebug() << "UDPSinkFEC::setRemoteAddress: address: " << address << " port: " << port;
m_remoteAddress = address;
m_remotePort = port;
m_remoteOutputSender->setDestination(m_remoteAddress, m_remotePort);
}
void UDPSinkFEC::write(const SampleVector::iterator& begin, uint32_t sampleChunkSize, bool isTx)
{
const SampleVector::iterator end = begin + sampleChunkSize;
SampleVector::const_iterator it = begin;
while (it != end)
{
int inSamplesIndex = it - begin;
int inRemainingSamples = end - it;
if (m_txBlockIndex == 0)
{
RemoteMetaDataFEC metaData;
uint64_t nowus = TimeUtil::nowus();
metaData.m_centerFrequency = 0; // frequency not set by stream
metaData.m_sampleRate = m_sampleRate;
metaData.m_sampleBytes = m_nbTxBytes;;
metaData.m_sampleBits = getNbSampleBits();
metaData.m_nbOriginalBlocks = RemoteNbOrginalBlocks;
metaData.m_nbFECBlocks = m_nbBlocksFEC;
metaData.m_deviceIndex = m_deviceIndex; // index of device set in the instance
metaData.m_channelIndex = 0; // irrelavant
metaData.m_tv_sec = nowus / 1000000UL; // tv.tv_sec;
metaData.m_tv_usec = nowus % 1000000UL; // tv.tv_usec;
if (!m_dataFrame) { // on the very first cycle there is no data block allocated
m_dataFrame = m_remoteOutputSender->getDataFrame(); // ask a new block to sender
}
boost::crc_32_type crc32;
crc32.process_bytes(&metaData, sizeof(RemoteMetaDataFEC)-4);
metaData.m_crc32 = crc32.checksum();
RemoteSuperBlock& superBlock = m_dataFrame->m_superBlocks[0]; // first block
superBlock.init();
superBlock.m_header.m_frameIndex = m_frameCount;
superBlock.m_header.m_blockIndex = m_txBlockIndex;
superBlock.m_header.m_sampleBytes = m_nbTxBytes;
superBlock.m_header.m_sampleBits = getNbSampleBits();
RemoteMetaDataFEC *destMeta = (RemoteMetaDataFEC *) &superBlock.m_protectedBlock;
*destMeta = metaData;
if (!(metaData == m_currentMetaFEC))
{
qDebug() << "UDPSinkFEC::write: meta: "
<< "|" << metaData.m_centerFrequency
<< ":" << metaData.m_sampleRate
<< ":" << (int) (metaData.m_sampleBytes & 0xF)
<< ":" << (int) metaData.m_sampleBits
<< "|" << (int) metaData.m_nbOriginalBlocks
<< ":" << (int) metaData.m_nbFECBlocks
<< "|" << metaData.m_deviceIndex
<< ":" << metaData.m_channelIndex
<< "|" << metaData.m_tv_sec
<< ":" << metaData.m_tv_usec;
m_currentMetaFEC = metaData;
}
m_txBlockIndex = 1; // next Tx block with data
} // block zero
// handle different sample sizes...
int samplesPerBlock = RemoteNbBytesPerBlock / (m_nbTxBytes * 2); // two I or Q samples
if (m_sampleIndex + inRemainingSamples < samplesPerBlock) // there is still room in the current super block
{
convertSampleToData(begin + inSamplesIndex, inRemainingSamples, isTx);
m_sampleIndex += inRemainingSamples;
it = end; // all input samples are consumed
}
else // complete super block and initiate the next if not end of frame
{
convertSampleToData(begin + inSamplesIndex, samplesPerBlock - m_sampleIndex, isTx);
it += samplesPerBlock - m_sampleIndex;
m_sampleIndex = 0;
m_superBlock.m_header.m_frameIndex = m_frameCount;
m_superBlock.m_header.m_blockIndex = m_txBlockIndex;
m_superBlock.m_header.m_sampleBytes = m_nbTxBytes;
m_superBlock.m_header.m_sampleBits = getNbSampleBits();
m_dataFrame->m_superBlocks[m_txBlockIndex] = m_superBlock;
if (m_txBlockIndex == RemoteNbOrginalBlocks - 1) // frame complete
{
m_dataFrame->m_txControlBlock.m_frameIndex = m_frameCount;
m_dataFrame->m_txControlBlock.m_processed = false;
m_dataFrame->m_txControlBlock.m_complete = true;
m_dataFrame->m_txControlBlock.m_nbBlocksFEC = m_nbBlocksFEC;
m_dataFrame->m_txControlBlock.m_dataAddress = m_remoteAddress;
m_dataFrame->m_txControlBlock.m_dataPort = m_remotePort;
m_dataFrame = m_remoteOutputSender->getDataFrame(); // ask a new block to sender
m_txBlockIndex = 0;
m_frameCount++;
}
else
{
m_txBlockIndex++;
}
}
}
}
uint32_t UDPSinkFEC::getNbSampleBits()
{
if (m_nbTxBytes == 1) {
return 8;
} else if (m_nbTxBytes == 2) {
return 16;
} else if (m_nbTxBytes == 4) {
return 24;
} else {
return 16;
}
}