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sdrangel/plugins/samplesink/remoteoutput/remoteoutputworker.cpp

146 lines
4.5 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 <stdio.h>
#include <errno.h>
#include <assert.h>
#include <algorithm>
#include <QDebug>
#include "dsp/samplesourcefifo.h"
#include "util/timeutil.h"
#include "remoteoutputworker.h"
RemoteOutputWorker::RemoteOutputWorker(SampleSourceFifo* sampleFifo, QObject* parent) :
QObject(parent),
m_running(false),
m_samplesChunkSize(0),
m_sampleFifo(sampleFifo),
m_samplesCount(0),
m_chunkCorrection(0),
m_samplerate(0),
m_throttlems(REMOTEOUTPUT_THROTTLE_MS),
m_maxThrottlems(50),
m_throttleToggle(false)
{
}
RemoteOutputWorker::~RemoteOutputWorker()
{
if (m_running) {
stopWork();
}
}
void RemoteOutputWorker::startWork()
{
qDebug() << "RemoteOutputWorker::startWork: ";
m_udpSinkFEC.startSender();
m_maxThrottlems = 0;
m_running = true;
}
void RemoteOutputWorker::stopWork()
{
qDebug() << "RemoteOutputWorker::stopWork";
m_running = false;
m_udpSinkFEC.stopSender();
}
void RemoteOutputWorker::setSamplerate(int samplerate)
{
if (samplerate != m_samplerate)
{
qDebug() << "RemoteOutputWorker::setSamplerate:"
<< " new:" << samplerate
<< " old:" << m_samplerate;
bool wasRunning = false;
if (m_running)
{
stopWork();
wasRunning = true;
}
// resize sample FIFO
if (m_sampleFifo)
{
unsigned int fifoRate = std::max(
(unsigned int) samplerate,
48000U);
m_sampleFifo->resize(SampleSourceFifo::getSizePolicy(fifoRate));
}
m_samplerate = samplerate;
m_samplesChunkSize = (m_samplerate * m_throttlems) / 1000;
m_udpSinkFEC.setSampleRate(m_samplerate);
if (wasRunning) {
startWork();
}
}
}
void RemoteOutputWorker::connectTimer(const QTimer& timer)
{
qDebug() << "RemoteOutputWorker::connectTimer";
connect(&timer, SIGNAL(timeout()), this, SLOT(tick()));
}
void RemoteOutputWorker::tick()
{
if (m_running)
{
qint64 throttlems = m_elapsedTimer.restart();
if (throttlems != m_throttlems)
{
m_throttlems = throttlems;
m_samplesChunkSize = (m_samplerate * (m_throttlems+(m_throttleToggle ? 1 : 0))) / 1000;
m_samplesChunkSize = m_samplesChunkSize + m_chunkCorrection > 0 ? m_samplesChunkSize + m_chunkCorrection : m_samplesChunkSize;
m_throttleToggle = !m_throttleToggle;
}
SampleVector::iterator readUntil;
SampleVector& data = m_sampleFifo->getData();
unsigned int iPart1Begin, iPart1End, iPart2Begin, iPart2End;
m_sampleFifo->read(m_samplesChunkSize, iPart1Begin, iPart1End, iPart2Begin, iPart2End);
if (iPart1Begin != iPart1End)
{
SampleVector::iterator beginRead = data.begin() + iPart1Begin;
unsigned int partSize = iPart1End - iPart1Begin;
m_udpSinkFEC.write(beginRead, partSize);
}
if (iPart2Begin != iPart2End)
{
SampleVector::iterator beginRead = data.begin() + iPart2Begin;
unsigned int partSize = iPart2End - iPart2Begin;
m_udpSinkFEC.write(beginRead, partSize);
}
}
}
uint32_t RemoteOutputWorker::getSamplesCount(uint64_t& ts_usecs) const
{
ts_usecs = TimeUtil::nowus();
return m_samplesCount;
}