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sdrangel/plugins/samplesource/sdrdaemonsource/sdrdaemonsourceudphandler.cpp

266 lines
8.6 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 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 //
// //
// 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 <QUdpSocket>
#include <QDebug>
#include <QTimer>
#include <unistd.h>
#include "dsp/dspcommands.h"
#include "dsp/dspengine.h"
#include <device/devicesourceapi.h>
#include "sdrdaemonsourceinput.h"
#include "sdrdaemonsourceudphandler.h"
SDRdaemonSourceUDPHandler::SDRdaemonSourceUDPHandler(SampleSinkFifo *sampleFifo, MessageQueue *outputMessageQueueToGUI, DeviceSourceAPI *devieAPI) :
m_deviceAPI(devieAPI),
m_sdrDaemonBuffer(m_rateDivider),
m_dataSocket(0),
m_dataAddress(QHostAddress::LocalHost),
m_remoteAddress(QHostAddress::LocalHost),
m_dataPort(9090),
m_dataConnected(false),
m_udpBuf(0),
m_udpReadBytes(0),
m_sampleFifo(sampleFifo),
m_samplerate(0),
m_centerFrequency(0),
m_tv_sec(0),
m_tv_usec(0),
m_outputMessageQueueToGUI(outputMessageQueueToGUI),
m_tickCount(0),
m_samplesCount(0),
m_timer(0),
m_throttlems(SDRDAEMONSOURCE_THROTTLE_MS),
m_readLengthSamples(0),
m_readLength(0),
m_throttleToggle(false),
m_rateDivider(1000/SDRDAEMONSOURCE_THROTTLE_MS),
m_autoCorrBuffer(true)
{
m_udpBuf = new char[SDRdaemonSourceBuffer::m_udpPayloadSize];
}
SDRdaemonSourceUDPHandler::~SDRdaemonSourceUDPHandler()
{
stop();
delete[] m_udpBuf;
#ifdef USE_INTERNAL_TIMER
if (m_timer) {
delete m_timer;
}
#endif
}
void SDRdaemonSourceUDPHandler::start()
{
qDebug("SDRdaemonSourceUDPHandler::start");
if (!m_dataSocket)
{
m_dataSocket = new QUdpSocket(this);
}
if (!m_dataConnected)
{
connect(m_dataSocket, SIGNAL(readyRead()), this, SLOT(dataReadyRead()), Qt::QueuedConnection); // , Qt::QueuedConnection
if (m_dataSocket->bind(m_dataAddress, m_dataPort))
{
qDebug("SDRdaemonSourceUDPHandler::start: bind data socket to %s:%d", m_dataAddress.toString().toStdString().c_str(), m_dataPort);
m_dataConnected = true;
}
else
{
qWarning("SDRdaemonSourceUDPHandler::start: cannot bind data port %d", m_dataPort);
disconnect(m_dataSocket, SIGNAL(readyRead()), this, SLOT(dataReadyRead()));
m_dataConnected = false;
}
}
// Need to notify the DSP engine to actually start
DSPSignalNotification *notif = new DSPSignalNotification(m_samplerate, m_centerFrequency * 1000); // Frequency in Hz for the DSP engine
m_deviceAPI->getDeviceEngineInputMessageQueue()->push(notif);
m_elapsedTimer.start();
}
void SDRdaemonSourceUDPHandler::stop()
{
qDebug("SDRdaemonSourceUDPHandler::stop");
if (m_dataConnected)
{
m_dataConnected = false;
disconnect(m_dataSocket, SIGNAL(readyRead()), this, SLOT(dataReadyRead()));
}
if (m_dataSocket)
{
delete m_dataSocket;
m_dataSocket = 0;
}
}
void SDRdaemonSourceUDPHandler::configureUDPLink(const QString& address, quint16 port)
{
qDebug("SDRdaemonSourceUDPHandler::configureUDPLink: %s:%d", address.toStdString().c_str(), port);
bool addressOK = m_dataAddress.setAddress(address);
if (!addressOK)
{
qWarning("SDRdaemonSourceUDPHandler::configureUDPLink: invalid address %s. Set to localhost.", address.toStdString().c_str());
m_dataAddress = QHostAddress::LocalHost;
}
stop();
m_dataPort = port;
start();
}
void SDRdaemonSourceUDPHandler::dataReadyRead()
{
m_udpReadBytes = 0;
while (m_dataSocket->hasPendingDatagrams() && m_dataConnected)
{
qint64 pendingDataSize = m_dataSocket->pendingDatagramSize();
m_udpReadBytes += m_dataSocket->readDatagram(&m_udpBuf[m_udpReadBytes], pendingDataSize, &m_remoteAddress, 0);
if (m_udpReadBytes == SDRdaemonSourceBuffer::m_udpPayloadSize) {
processData();
m_udpReadBytes = 0;
}
}
}
void SDRdaemonSourceUDPHandler::processData()
{
m_sdrDaemonBuffer.writeData(m_udpBuf);
const SDRdaemonSourceBuffer::MetaDataFEC& metaData = m_sdrDaemonBuffer.getCurrentMeta();
bool change = false;
// m_tv_sec = metaData.m_tv_sec;
// m_tv_usec = metaData.m_tv_usec;
m_tv_sec = m_sdrDaemonBuffer.getTVOutSec();
m_tv_usec = m_sdrDaemonBuffer.getTVOutUsec();
if (m_centerFrequency != metaData.m_centerFrequency)
{
m_centerFrequency = metaData.m_centerFrequency;
change = true;
}
if (m_samplerate != metaData.m_sampleRate)
{
m_samplerate = metaData.m_sampleRate;
change = true;
}
if (change)
{
DSPSignalNotification *notif = new DSPSignalNotification(m_samplerate, m_centerFrequency * 1000); // Frequency in Hz for the DSP engine
m_deviceAPI->getDeviceEngineInputMessageQueue()->push(notif);
SDRdaemonSourceInput::MsgReportSDRdaemonSourceStreamData *report = SDRdaemonSourceInput::MsgReportSDRdaemonSourceStreamData::create(
m_samplerate,
m_centerFrequency * 1000, // Frequency in Hz for the GUI
m_tv_sec,
m_tv_usec);
m_outputMessageQueueToGUI->push(report);
}
}
void SDRdaemonSourceUDPHandler::connectTimer(const QTimer* timer)
{
qDebug() << "SDRdaemonSourceUDPHandler::connectTimer";
#ifdef USE_INTERNAL_TIMER
#warning "Uses internal timer"
m_timer = new QTimer();
m_timer->start(50);
m_throttlems = m_timer->interval();
connect(m_timer, SIGNAL(timeout()), this, SLOT(tick()));
#else
m_throttlems = timer->interval();
connect(timer, SIGNAL(timeout()), this, SLOT(tick()));
#endif
m_rateDivider = 1000 / m_throttlems;
}
void SDRdaemonSourceUDPHandler::tick()
{
// auto throttling
int throttlems = m_elapsedTimer.restart();
if (throttlems != m_throttlems)
{
m_throttlems = throttlems;
m_readLengthSamples = (m_sdrDaemonBuffer.getCurrentMeta().m_sampleRate * (m_throttlems+(m_throttleToggle ? 1 : 0))) / 1000;
m_throttleToggle = !m_throttleToggle;
}
if (m_autoCorrBuffer) {
m_readLengthSamples += m_sdrDaemonBuffer.getRWBalanceCorrection();
}
m_readLength = m_readLengthSamples * SDRdaemonSourceBuffer::m_iqSampleSize;
// read samples directly feeding the SampleFifo (no callback)
m_sampleFifo->write(reinterpret_cast<quint8*>(m_sdrDaemonBuffer.readData(m_readLength)), m_readLength);
m_samplesCount += m_readLengthSamples;
if (m_tickCount < m_rateDivider)
{
m_tickCount++;
}
else
{
int framesDecodingStatus;
int minNbBlocks = m_sdrDaemonBuffer.getMinNbBlocks();
int minNbOriginalBlocks = m_sdrDaemonBuffer.getMinOriginalBlocks();
int nbOriginalBlocks = m_sdrDaemonBuffer.getCurrentMeta().m_nbOriginalBlocks;
int nbFECblocks = m_sdrDaemonBuffer.getCurrentMeta().m_nbFECBlocks;
m_tickCount = 0;
//framesDecodingStatus = (minNbOriginalBlocks == nbOriginalBlocks ? 2 : (minNbOriginalBlocks < nbOriginalBlocks - nbFECblocks ? 0 : 1));
if (minNbBlocks < nbOriginalBlocks) {
framesDecodingStatus = 0;
} else if (minNbBlocks < nbOriginalBlocks + nbFECblocks) {
framesDecodingStatus = 1;
} else {
framesDecodingStatus = 2;
}
SDRdaemonSourceInput::MsgReportSDRdaemonSourceStreamTiming *report = SDRdaemonSourceInput::MsgReportSDRdaemonSourceStreamTiming::create(
m_tv_sec,
m_tv_usec,
m_sdrDaemonBuffer.getBufferLengthInSecs(),
m_sdrDaemonBuffer.getBufferGauge(),
framesDecodingStatus,
minNbBlocks == nbOriginalBlocks + nbFECblocks,
minNbBlocks,
minNbOriginalBlocks,
m_sdrDaemonBuffer.getMaxNbRecovery(),
m_sdrDaemonBuffer.getAvgNbBlocks(),
m_sdrDaemonBuffer.getAvgOriginalBlocks(),
m_sdrDaemonBuffer.getAvgNbRecovery(),
nbOriginalBlocks,
nbFECblocks);
m_outputMessageQueueToGUI->push(report);
}
}