mirror of
https://github.com/f4exb/sdrangel.git
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452 lines
12 KiB
C++
452 lines
12 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2015 F4EXB //
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// written by Edouard Griffiths //
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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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// //
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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 "udpsrc.h"
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#include <QUdpSocket>
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#include <QThread>
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#include <QHostAddress>
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#include "dsp/channelizer.h"
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#include "dsp/dspengine.h"
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#include "udpsrcgui.h"
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcConfigure, Message)
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcConfigureImmediate, Message)
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MESSAGE_CLASS_DEFINITION(UDPSrc::MsgUDPSrcSpectrum, Message)
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UDPSrc::UDPSrc(MessageQueue* uiMessageQueue, UDPSrcGUI* udpSrcGUI, SampleSink* spectrum) :
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m_settingsMutex(QMutex::Recursive),
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m_audioFifo(4, 24000),
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m_audioActive(false),
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m_audioStereo(false),
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m_volume(20)
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{
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setObjectName("UDPSrc");
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m_socket = new QUdpSocket(this);
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m_audioSocket = new QUdpSocket(this);
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m_audioBuffer.resize(1<<9);
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m_audioBufferFill = 0;
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m_inputSampleRate = 96000;
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m_sampleFormat = FormatSSB;
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m_outputSampleRate = 48000;
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m_rfBandwidth = 32000;
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m_udpPort = 9999;
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m_audioPort = m_udpPort - 1;
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m_nco.setFreq(0, m_inputSampleRate);
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m_interpolator.create(16, m_inputSampleRate, m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_inputSampleRate / m_outputSampleRate;
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m_uiMessageQueue = uiMessageQueue;
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m_udpSrcGUI = udpSrcGUI;
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m_spectrum = spectrum;
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m_spectrumEnabled = false;
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m_nextSSBId = 0;
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m_nextS16leId = 0;
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m_last = 0;
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m_this = 0;
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m_scale = 0;
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m_boost = 0;
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m_magsq = 0;
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m_sampleBufferSSB.resize(udpFftLen);
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UDPFilter = new fftfilt(0.3 / 48.0, 16.0 / 48.0, udpFftLen);
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if (m_audioSocket->bind(QHostAddress::LocalHost, m_audioPort))
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{
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qDebug("UDPSrc::UDPSrc: bind audio socket to port %d", m_audioPort);
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connect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()));
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}
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else
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{
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qWarning("UDPSrc::UDPSrc: cannot bind audio port");
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}
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//DSPEngine::instance()->addAudioSink(&m_audioFifo);
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}
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UDPSrc::~UDPSrc()
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{
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delete m_audioSocket;
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delete m_socket;
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if (UDPFilter) delete UDPFilter;
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if (m_audioActive) DSPEngine::instance()->removeAudioSink(&m_audioFifo);
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}
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void UDPSrc::configure(MessageQueue* messageQueue,
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SampleFormat sampleFormat,
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Real outputSampleRate,
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Real rfBandwidth,
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QString& udpAddress,
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int udpPort,
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int audioPort)
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{
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Message* cmd = MsgUDPSrcConfigure::create(sampleFormat,
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outputSampleRate,
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rfBandwidth,
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udpAddress,
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udpPort,
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audioPort);
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messageQueue->push(cmd);
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}
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void UDPSrc::configureImmediate(MessageQueue* messageQueue,
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bool audioActive,
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bool audioStereo,
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int boost,
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int volume)
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{
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Message* cmd = MsgUDPSrcConfigureImmediate::create(
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audioActive,
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audioStereo,
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boost,
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volume);
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messageQueue->push(cmd);
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}
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void UDPSrc::setSpectrum(MessageQueue* messageQueue, bool enabled)
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{
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Message* cmd = MsgUDPSrcSpectrum::create(enabled);
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messageQueue->push(cmd);
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}
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void UDPSrc::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly)
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{
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Complex ci;
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fftfilt::cmplx* sideband;
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Real l, r;
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m_sampleBuffer.clear();
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m_settingsMutex.lock();
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// Rtl-Sdr uses full 16-bit scale; FCDPP does not
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//int rescale = 32768 * (1 << m_boost);
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int rescale = (1 << m_boost);
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for(SampleVector::const_iterator it = begin; it < end; ++it) {
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//Complex c(it->real() / 32768.0f, it->imag() / 32768.0f);
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Complex c(it->real(), it->imag());
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c *= m_nco.nextIQ();
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if(m_interpolator.interpolate(&m_sampleDistanceRemain, c, &ci))
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{
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m_magsq = ((ci.real()*ci.real() + ci.imag()*ci.imag())*rescale*rescale) / (1<<30);
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m_sampleBuffer.push_back(Sample(ci.real() * rescale, ci.imag() * rescale));
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m_sampleDistanceRemain += m_inputSampleRate / m_outputSampleRate;
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}
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}
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if((m_spectrum != 0) && (m_spectrumEnabled))
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{
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m_spectrum->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), positiveOnly);
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}
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if (m_sampleFormat == FormatSSB)
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{
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for(SampleVector::const_iterator it = m_sampleBuffer.begin(); it != m_sampleBuffer.end(); ++it)
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{
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//Complex cj(it->real() / 30000.0, it->imag() / 30000.0);
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Complex cj(it->real(), it->imag());
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int n_out = UDPFilter->runSSB(cj, &sideband, true);
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if (n_out)
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{
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for (int i = 0; i < n_out; i+=2)
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{
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//l = (sideband[i].real() + sideband[i].imag()) * 0.7 * 32000.0;
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//r = (sideband[i+1].real() + sideband[i+1].imag()) * 0.7 * 32000.0;
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l = (sideband[i].real() + sideband[i].imag()) * 0.7;
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r = (sideband[i+1].real() + sideband[i+1].imag()) * 0.7;
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m_sampleBufferSSB.push_back(Sample(l, r));
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}
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m_socket->writeDatagram((const char*)&m_sampleBufferSSB[0], (qint64 ) (n_out * 2), m_udpAddress, m_udpPort);
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m_sampleBufferSSB.clear();
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}
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}
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}
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else if (m_sampleFormat == FormatNFM)
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{
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for(SampleVector::const_iterator it = m_sampleBuffer.begin(); it != m_sampleBuffer.end(); ++it)
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{
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Complex cj(it->real() / 32768.0f, it->imag() / 32768.0f);
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// An FFT filter here is overkill, but was already set up for SSB
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int n_out = UDPFilter->runFilt(cj, &sideband);
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if (n_out)
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{
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Real sum = 1.0;
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for (int i = 0; i < n_out; i+=2)
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{
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l = m_this.real() * (m_last.imag() - sideband[i].imag())
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- m_this.imag() * (m_last.real() - sideband[i].real());
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m_last = sideband[i];
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r = m_last.real() * (m_this.imag() - sideband[i+1].imag())
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- m_last.imag() * (m_this.real() - sideband[i+1].real());
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m_this = sideband[i+1];
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m_sampleBufferSSB.push_back(Sample(l * m_scale, r * m_scale));
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sum += m_this.real() * m_this.real() + m_this.imag() * m_this.imag();
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}
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// TODO: correct levels
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m_scale = 24000 * udpFftLen / sum;
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m_socket->writeDatagram((const char*)&m_sampleBufferSSB[0], (qint64 ) (n_out * 2), m_udpAddress, m_udpPort);
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m_sampleBufferSSB.clear();
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}
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}
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}
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else
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{
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m_socket->writeDatagram((const char*)&m_sampleBuffer[0], (qint64 ) (m_sampleBuffer.size() * 4), m_udpAddress, m_udpPort);
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}
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m_settingsMutex.unlock();
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}
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void UDPSrc::start()
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{
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}
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void UDPSrc::stop()
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{
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}
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bool UDPSrc::handleMessage(const Message& cmd)
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{
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qDebug() << "UDPSrc::handleMessage";
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if (Channelizer::MsgChannelizerNotification::match(cmd))
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{
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Channelizer::MsgChannelizerNotification& notif = (Channelizer::MsgChannelizerNotification&) cmd;
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m_settingsMutex.lock();
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m_inputSampleRate = notif.getSampleRate();
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m_nco.setFreq(-notif.getFrequencyOffset(), m_inputSampleRate);
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m_interpolator.create(16, m_inputSampleRate, m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_inputSampleRate / m_outputSampleRate;
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m_settingsMutex.unlock();
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qDebug() << "UDPSrc::handleMessage: MsgChannelizerNotification: m_inputSampleRate: " << m_inputSampleRate
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<< " frequencyOffset: " << notif.getFrequencyOffset();
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return true;
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}
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else if (MsgUDPSrcConfigureImmediate::match(cmd))
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{
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MsgUDPSrcConfigureImmediate& cfg = (MsgUDPSrcConfigureImmediate&) cmd;
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m_settingsMutex.lock();
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if (cfg.getAudioActive() != m_audioActive)
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{
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m_audioActive = cfg.getAudioActive();
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if (m_audioActive)
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{
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m_audioBufferFill = 0;
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DSPEngine::instance()->addAudioSink(&m_audioFifo);
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}
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else
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{
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DSPEngine::instance()->removeAudioSink(&m_audioFifo);
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}
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}
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if (cfg.getAudioStereo() != m_audioStereo)
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{
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m_audioStereo = cfg.getAudioStereo();
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}
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if (cfg.getBoost() != m_boost)
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{
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m_boost = cfg.getBoost();
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}
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if (cfg.getVolume() != m_volume)
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{
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m_volume = cfg.getVolume();
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}
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m_settingsMutex.unlock();
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qDebug() << "UDPSrc::handleMessage: MsgUDPSrcConfigureImmediate: "
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<< " m_audioActive: " << m_audioActive
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<< " m_audioStereo: " << m_audioStereo
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<< " m_boost: " << m_boost
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<< " m_volume: " << m_volume;
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return true;
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}
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else if (MsgUDPSrcConfigure::match(cmd))
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{
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MsgUDPSrcConfigure& cfg = (MsgUDPSrcConfigure&) cmd;
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m_settingsMutex.lock();
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m_sampleFormat = cfg.getSampleFormat();
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m_outputSampleRate = cfg.getOutputSampleRate();
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m_rfBandwidth = cfg.getRFBandwidth();
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if (cfg.getUDPAddress() != m_udpAddress.toString())
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{
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m_udpAddress.setAddress(cfg.getUDPAddress());
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}
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if (cfg.getUDPPort() != m_udpPort)
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{
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m_udpPort = cfg.getUDPPort();
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}
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if (cfg.getAudioPort() != m_audioPort)
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{
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m_audioPort = cfg.getAudioPort();
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disconnect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()));
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delete m_audioSocket;
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m_audioSocket = new QUdpSocket(this);
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if (m_audioSocket->bind(QHostAddress::Any, m_audioPort))
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{
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connect(m_audioSocket, SIGNAL(readyRead()), this, SLOT(audioReadyRead()));
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}
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else
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{
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qWarning("UDPSrc::handleMessage: cannot bind audio socket");
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}
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}
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m_interpolator.create(16, m_inputSampleRate, m_rfBandwidth / 2.0);
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m_sampleDistanceRemain = m_inputSampleRate / m_outputSampleRate;
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if (m_sampleFormat == FormatSSB)
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{
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UDPFilter->create_filter(0.3 / 48.0, m_rfBandwidth / 2.0 / m_outputSampleRate);
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}
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else
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{
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UDPFilter->create_filter(0.0, m_rfBandwidth / 2.0 / m_outputSampleRate);
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}
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m_settingsMutex.unlock();
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qDebug() << "UDPSrc::handleMessage: MsgUDPSrcConfigure: m_sampleFormat: " << m_sampleFormat
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<< " m_outputSampleRate: " << m_outputSampleRate
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<< " m_rfBandwidth: " << m_rfBandwidth
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<< " m_boost: " << m_boost
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<< " m_udpAddress: " << cfg.getUDPAddress()
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<< " m_udpPort: " << m_udpPort
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<< " m_audioPort: " << m_audioPort;
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return true;
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}
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else if (MsgUDPSrcSpectrum::match(cmd))
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{
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MsgUDPSrcSpectrum& spc = (MsgUDPSrcSpectrum&) cmd;
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m_spectrumEnabled = spc.getEnabled();
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qDebug() << "UDPSrc::handleMessage: MsgUDPSrcSpectrum: m_spectrumEnabled: " << m_spectrumEnabled;
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return true;
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}
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else
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{
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if(m_spectrum != 0)
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{
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return m_spectrum->handleMessage(cmd);
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}
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else
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{
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return false;
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}
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}
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}
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void UDPSrc::audioReadyRead()
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{
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QByteArray buffer;
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while (m_audioSocket->hasPendingDatagrams())
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{
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buffer.resize(m_audioSocket->pendingDatagramSize());
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m_audioSocket->readDatagram(buffer.data(), buffer.size(), 0, 0);
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//qDebug("UDPSrc::audioReadyRead: %d", buffer.size());
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if (m_audioActive)
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{
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if (m_audioStereo)
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{
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for (int i = 0; i < buffer.size() - 3; i += 4)
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{
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qint16 l_sample = (qint16) *(&buffer.data()[i]);
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qint16 r_sample = (qint16) *(&buffer.data()[i+2]);
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m_audioBuffer[m_audioBufferFill].l = l_sample * 10 * m_volume;
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m_audioBuffer[m_audioBufferFill].r = r_sample * 10 * m_volume;
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++m_audioBufferFill;
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if (m_audioBufferFill >= m_audioBuffer.size())
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{
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uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
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if (res != m_audioBufferFill)
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{
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qDebug("UDPSrc::audioReadyRead: (stereo) lost %u samples", m_audioBufferFill - res);
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}
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m_audioBufferFill = 0;
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}
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}
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}
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else
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{
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for (int i = 0; i < buffer.size() - 1; i += 2)
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{
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qint16 sample = (qint16) *(&buffer.data()[i]);
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m_audioBuffer[m_audioBufferFill].l = sample * 10 * m_volume;
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m_audioBuffer[m_audioBufferFill].r = sample * 10 * m_volume;
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++m_audioBufferFill;
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if (m_audioBufferFill >= m_audioBuffer.size())
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{
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uint res = m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 1);
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if (res != m_audioBufferFill)
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{
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qDebug("UDPSrc::audioReadyRead: (mono) lost %u samples", m_audioBufferFill - res);
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}
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m_audioBufferFill = 0;
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}
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}
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}
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if (m_audioFifo.write((const quint8*)&m_audioBuffer[0], m_audioBufferFill, 0) != m_audioBufferFill)
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{
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qDebug("UDPSrc::audioReadyRead: lost samples");
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}
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m_audioBufferFill = 0;
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}
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}
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//qDebug("UDPSrc::audioReadyRead: done");
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}
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