mirror of
https://github.com/f4exb/sdrangel.git
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147 lines
4.6 KiB
C++
147 lines
4.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2017 Edouard Griffiths, F4EXB //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <stdio.h>
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#include <errno.h>
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#include <algorithm>
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#include <QDebug>
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#include "dsp/samplesourcefifo.h"
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#include "util/timeutil.h"
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#include "remoteoutputworker.h"
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RemoteOutputWorker::RemoteOutputWorker(SampleSourceFifo* sampleFifo, QObject* parent) :
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QObject(parent),
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m_running(false),
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m_samplesChunkSize(0),
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m_sampleFifo(sampleFifo),
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m_samplesCount(0),
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m_chunkCorrection(0),
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m_samplerate(0),
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m_throttlems(REMOTEOUTPUT_THROTTLE_MS),
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m_maxThrottlems(50),
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m_throttleToggle(false)
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{
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}
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RemoteOutputWorker::~RemoteOutputWorker()
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{
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if (m_running) {
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stopWork();
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}
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}
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void RemoteOutputWorker::startWork()
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{
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qDebug() << "RemoteOutputWorker::startWork: ";
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m_udpSinkFEC.init();
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m_udpSinkFEC.startSender();
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m_maxThrottlems = 0;
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m_running = true;
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}
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void RemoteOutputWorker::stopWork()
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{
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qDebug() << "RemoteOutputWorker::stopWork";
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m_running = false;
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m_udpSinkFEC.stopSender();
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}
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void RemoteOutputWorker::setSamplerate(int samplerate)
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{
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if (samplerate != m_samplerate)
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{
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qDebug() << "RemoteOutputWorker::setSamplerate:"
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<< " new:" << samplerate
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<< " old:" << m_samplerate;
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bool wasRunning = false;
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if (m_running)
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{
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stopWork();
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wasRunning = true;
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}
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// resize sample FIFO
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if (m_sampleFifo)
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{
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unsigned int fifoRate = std::max(
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(unsigned int) samplerate,
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48000U);
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m_sampleFifo->resize(SampleSourceFifo::getSizePolicy(fifoRate));
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}
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m_samplerate = samplerate;
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m_samplesChunkSize = (m_samplerate * m_throttlems) / 1000;
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m_udpSinkFEC.setSampleRate(m_samplerate);
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if (wasRunning) {
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startWork();
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}
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}
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}
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void RemoteOutputWorker::connectTimer(const QTimer& timer)
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{
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qDebug() << "RemoteOutputWorker::connectTimer";
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connect(&timer, SIGNAL(timeout()), this, SLOT(tick()));
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}
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void RemoteOutputWorker::tick()
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{
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if (m_running)
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{
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qint64 throttlems = m_elapsedTimer.restart();
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if (throttlems != m_throttlems)
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{
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m_throttlems = throttlems;
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m_samplesChunkSize = (m_samplerate * (m_throttlems+(m_throttleToggle ? 1 : 0))) / 1000;
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m_samplesChunkSize = m_samplesChunkSize + m_chunkCorrection > 0 ? m_samplesChunkSize + m_chunkCorrection : m_samplesChunkSize;
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m_throttleToggle = !m_throttleToggle;
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}
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SampleVector::iterator readUntil;
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SampleVector& data = m_sampleFifo->getData();
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unsigned int iPart1Begin, iPart1End, iPart2Begin, iPart2End;
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m_sampleFifo->read(m_samplesChunkSize, iPart1Begin, iPart1End, iPart2Begin, iPart2End);
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m_samplesCount += m_samplesChunkSize;
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if (iPart1Begin != iPart1End)
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{
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SampleVector::iterator beginRead = data.begin() + iPart1Begin;
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unsigned int partSize = iPart1End - iPart1Begin;
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m_udpSinkFEC.write(beginRead, partSize, true);
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}
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if (iPart2Begin != iPart2End)
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{
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SampleVector::iterator beginRead = data.begin() + iPart2Begin;
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unsigned int partSize = iPart2End - iPart2Begin;
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m_udpSinkFEC.write(beginRead, partSize, true);
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}
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}
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}
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uint32_t RemoteOutputWorker::getSamplesCount(uint64_t& ts_usecs) const
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{
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ts_usecs = TimeUtil::nowus();
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return m_samplesCount;
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}
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