mirror of
https://github.com/f4exb/sdrangel.git
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1030 lines
30 KiB
C++
1030 lines
30 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 F4HKW //
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// for F4EXB / SDRAngel //
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// using LeanSDR Framework (C) 2016 F4DAV //
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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 "datvdemod.h"
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#include <QTime>
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#include <QDebug>
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#include <stdio.h>
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#include <complex.h>
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#include "audio/audiooutput.h"
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#include "dsp/dspengine.h"
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#include "dsp/downchannelizer.h"
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#include "dsp/threadedbasebandsamplesink.h"
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#include "device/deviceapi.h"
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const QString DATVDemod::m_channelIdURI = "sdrangel.channel.demoddatv";
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const QString DATVDemod::m_channelId = "DATVDemod";
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MESSAGE_CLASS_DEFINITION(DATVDemod::MsgConfigureDATVDemod, Message)
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MESSAGE_CLASS_DEFINITION(DATVDemod::MsgConfigureChannelizer, Message)
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DATVDemod::DATVDemod(DeviceAPI *deviceAPI) :
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ChannelAPI(m_channelIdURI, ChannelAPI::StreamSingleSink),
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m_blnNeedConfigUpdate(false),
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m_deviceAPI(deviceAPI),
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m_objRegisteredTVScreen(0),
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m_objRegisteredVideoRender(0),
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m_objVideoStream(nullptr),
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m_objRenderThread(nullptr),
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m_audioFifo(48000),
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m_blnRenderingVideo(false),
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m_blnStartStopVideo(false),
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m_enmModulation(DATVDemodSettings::BPSK /*DATV_FM1*/),
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m_sampleRate(1024000),
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m_objSettingsMutex(QMutex::NonRecursive)
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{
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setObjectName("DATVDemod");
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DSPEngine::instance()->getAudioDeviceManager()->addAudioSink(&m_audioFifo, getInputMessageQueue());
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//m_audioSampleRate = DSPEngine::instance()->getAudioDeviceManager()->getOutputSampleRate();
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//*************** DATV PARAMETERS ***************
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m_blnInitialized=false;
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CleanUpDATVFramework(false);
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m_objVideoStream = new DATVideostream();
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m_objRFFilter = new fftfilt(-256000.0 / 1024000.0, 256000.0 / 1024000.0, rfFilterFftLength);
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m_channelizer = new DownChannelizer(this);
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m_threadedChannelizer = new ThreadedBasebandSampleSink(m_channelizer, this);
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m_deviceAPI->addChannelSink(m_threadedChannelizer);
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m_deviceAPI->addChannelSinkAPI(this);
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}
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DATVDemod::~DATVDemod()
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{
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m_blnInitialized=false;
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if(m_objVideoStream!=nullptr)
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{
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//Immediately exit from DATVideoStream if waiting for data before killing thread
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m_objVideoStream->ThreadTimeOut=0;
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}
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DSPEngine::instance()->getAudioDeviceManager()->removeAudioSink(&m_audioFifo);
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if(m_objRenderThread!=nullptr)
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{
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if(m_objRenderThread->isRunning())
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{
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m_objRenderThread->stopRendering();
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m_objRenderThread->quit();
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}
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m_objRenderThread->wait(2000);
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}
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CleanUpDATVFramework(true);
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m_deviceAPI->removeChannelSinkAPI(this);
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m_deviceAPI->removeChannelSink(m_threadedChannelizer);
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delete m_threadedChannelizer;
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delete m_channelizer;
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delete m_objRFFilter;
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}
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bool DATVDemod::SetTVScreen(TVScreen *objScreen)
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{
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m_objRegisteredTVScreen = objScreen;
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return true;
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}
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DATVideostream *DATVDemod::SetVideoRender(DATVideoRender *objScreen)
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{
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m_objRegisteredVideoRender = objScreen;
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m_objRegisteredVideoRender->setAudioFIFO(&m_audioFifo);
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m_objRenderThread = new DATVideoRenderThread(m_objRegisteredVideoRender, m_objVideoStream);
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return m_objVideoStream;
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}
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bool DATVDemod::audioActive()
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{
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if (m_objRegisteredVideoRender) {
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return m_objRegisteredVideoRender->getAudioStreamIndex() >= 0;
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} else {
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return false;
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}
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}
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bool DATVDemod::videoActive()
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{
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if (m_objRegisteredVideoRender) {
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return m_objRegisteredVideoRender->getVideoStreamIndex() >= 0;
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} else {
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return false;
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}
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}
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bool DATVDemod::audioDecodeOK()
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{
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if (m_objRegisteredVideoRender) {
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return m_objRegisteredVideoRender->getAudioDecodeOK();
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} else {
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return false;
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}
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}
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bool DATVDemod::videoDecodeOK()
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{
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if (m_objRegisteredVideoRender) {
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return m_objRegisteredVideoRender->getVideoDecodeOK();
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} else {
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return false;
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}
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}
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bool DATVDemod::PlayVideo(bool blnStartStop)
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{
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if (m_objVideoStream == nullptr) {
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return false;
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}
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if (m_objRegisteredVideoRender == nullptr) {
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return false;
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}
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if (m_objRenderThread == nullptr) {
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return false;
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}
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if (m_blnStartStopVideo && !blnStartStop) {
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return true;
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}
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if (blnStartStop == true) {
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m_blnStartStopVideo = true;
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}
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if (m_objRenderThread->isRunning())
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{
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if (blnStartStop == true) {
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m_objRenderThread->stopRendering();
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}
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return true;
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}
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if (m_objVideoStream->bytesAvailable() > 0)
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{
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m_objRenderThread->setStreamAndRenderer(m_objRegisteredVideoRender, m_objVideoStream);
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m_objVideoStream->MultiThreaded = true;
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m_objVideoStream->ThreadTimeOut = 5000; //5000 ms
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m_objRenderThread->start();
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}
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return true;
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}
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void DATVDemod::CleanUpDATVFramework(bool blnRelease)
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{
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if (blnRelease == true)
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{
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if (m_objScheduler != nullptr)
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{
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m_objScheduler->shutdown();
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delete m_objScheduler;
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}
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// NOTCH FILTER
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if (r_auto_notch != nullptr) {
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delete r_auto_notch;
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}
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if (p_autonotched != nullptr) {
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delete p_autonotched;
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}
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// FREQUENCY CORRECTION : DEROTATOR
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if (p_derot != nullptr) {
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delete p_derot;
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}
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if (r_derot != nullptr) {
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delete r_derot;
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}
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// CNR ESTIMATION
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if (p_cnr != nullptr) {
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delete p_cnr;
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}
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if (r_cnr != nullptr) {
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delete r_cnr;
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}
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//FILTERING
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if (r_resample != nullptr) {
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delete r_resample;
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}
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if (p_resampled != nullptr) {
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delete p_resampled;
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}
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if (coeffs != nullptr) {
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delete coeffs;
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}
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// OUTPUT PREPROCESSED DATA
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if (sampler != nullptr) {
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delete sampler;
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}
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if (coeffs_sampler != nullptr) {
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delete coeffs_sampler;
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}
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if (p_symbols != nullptr) {
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delete p_symbols;
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}
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if (p_freq != nullptr) {
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delete p_freq;
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}
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if (p_ss != nullptr) {
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delete p_ss;
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}
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if (p_mer != nullptr) {
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delete p_mer;
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}
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if (p_sampled != nullptr) {
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delete p_sampled;
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}
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//DECIMATION
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if (p_decimated != nullptr) {
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delete p_decimated;
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}
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if (p_decim != nullptr) {
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delete p_decim;
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}
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if (r_ppout != nullptr) {
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delete r_ppout;
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}
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//GENERIC CONSTELLATION RECEIVER
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if (m_objDemodulator != nullptr) {
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delete m_objDemodulator;
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}
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//DECONVOLUTION AND SYNCHRONIZATION
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if (p_bytes != nullptr) {
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delete p_bytes;
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}
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if (r_deconv != nullptr) {
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delete r_deconv;
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}
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if (r != nullptr) {
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delete r;
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}
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if (p_descrambled != nullptr) {
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delete p_descrambled;
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}
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if (p_frames != nullptr) {
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delete p_frames;
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}
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if (r_etr192_descrambler != nullptr) {
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delete r_etr192_descrambler;
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}
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if (r_sync != nullptr) {
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delete r_sync;
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}
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if (p_mpegbytes != nullptr) {
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delete p_mpegbytes;
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}
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if (p_lock != nullptr) {
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delete p_lock;
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}
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if (p_locktime != nullptr) {
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delete p_locktime;
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}
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if (r_sync_mpeg != nullptr) {
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delete r_sync_mpeg;
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}
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// DEINTERLEAVING
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if (p_rspackets != nullptr) {
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delete p_rspackets;
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}
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if (r_deinter != nullptr) {
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delete r_deinter;
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}
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if (p_vbitcount != nullptr) {
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delete p_vbitcount;
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}
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if (p_verrcount != nullptr) {
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delete p_verrcount;
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}
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if (p_rtspackets != nullptr) {
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delete p_rtspackets;
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}
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if (r_rsdec != nullptr) {
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delete r_rsdec;
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}
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//BER ESTIMATION
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if (p_vber != nullptr) {
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delete p_vber;
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}
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if (r_vber != nullptr) {
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delete r_vber;
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}
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// DERANDOMIZATION
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if (p_tspackets != nullptr) {
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delete p_tspackets;
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}
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if (r_derand != nullptr) {
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delete r_derand;
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}
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//OUTPUT : To remove
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if (r_stdout != nullptr) {
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delete r_stdout;
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}
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if (r_videoplayer != nullptr) {
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delete r_videoplayer;
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}
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//CONSTELLATION
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if (r_scope_symbols != nullptr) {
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delete r_scope_symbols;
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}
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// INPUT
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//if(p_rawiq!=nullptr) delete p_rawiq;
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//if(p_rawiq_writer!=nullptr) delete p_rawiq_writer;
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//if(p_preprocessed!=nullptr) delete p_preprocessed;
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}
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m_objScheduler=nullptr;
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// INPUT
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p_rawiq = nullptr;
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p_rawiq_writer = nullptr;
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p_preprocessed = nullptr;
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// NOTCH FILTER
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r_auto_notch = nullptr;
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p_autonotched = nullptr;
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// FREQUENCY CORRECTION : DEROTATOR
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p_derot = nullptr;
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r_derot=nullptr;
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// CNR ESTIMATION
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p_cnr = nullptr;
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r_cnr = nullptr;
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//FILTERING
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r_resample = nullptr;
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p_resampled = nullptr;
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coeffs = nullptr;
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ncoeffs=0;
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// OUTPUT PREPROCESSED DATA
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sampler = nullptr;
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coeffs_sampler=nullptr;
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ncoeffs_sampler=0;
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p_symbols = nullptr;
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p_freq = nullptr;
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p_ss = nullptr;
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p_mer = nullptr;
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p_sampled = nullptr;
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//DECIMATION
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p_decimated = nullptr;
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p_decim = nullptr;
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r_ppout = nullptr;
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//GENERIC CONSTELLATION RECEIVER
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m_objDemodulator = nullptr;
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//DECONVOLUTION AND SYNCHRONIZATION
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p_bytes=nullptr;
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r_deconv=nullptr;
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r = nullptr;
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p_descrambled = nullptr;
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p_frames = nullptr;
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r_etr192_descrambler = nullptr;
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r_sync = nullptr;
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p_mpegbytes = nullptr;
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p_lock = nullptr;
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p_locktime = nullptr;
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r_sync_mpeg = nullptr;
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// DEINTERLEAVING
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p_rspackets = nullptr;
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r_deinter = nullptr;
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p_vbitcount = nullptr;
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p_verrcount = nullptr;
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p_rtspackets = nullptr;
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r_rsdec = nullptr;
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//BER ESTIMATION
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p_vber = nullptr;
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r_vber = nullptr;
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// DERANDOMIZATION
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p_tspackets = nullptr;
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r_derand = nullptr;
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//OUTPUT : To remove
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r_stdout = nullptr;
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r_videoplayer = nullptr;
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//CONSTELLATION
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r_scope_symbols = nullptr;
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}
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void DATVDemod::InitDATVFramework()
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{
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m_blnDVBInitialized = false;
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m_lngReadIQ = 0;
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CleanUpDATVFramework(false);
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qDebug() << "DATVDemod::InitDATVFramework:"
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<< " Symbol Rate: " << m_settings.m_symbolRate
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<< " Modulation: " << m_settings.m_modulation
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<< " Notch Filters: " << m_settings.m_notchFilters
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<< " Allow Drift: " << m_settings.m_allowDrift
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<< " Fast Lock: " << m_settings.m_fastLock
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<< " Filter: " << m_settings.m_filter
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<< " HARD METRIC: " << m_settings.m_hardMetric
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<< " RollOff: " << m_settings.m_rollOff
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<< " Viterbi: " << m_settings.m_viterbi
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<< " Excursion: " << m_settings.m_excursion;
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m_objCfg.standard = m_settings.m_standard;
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m_objCfg.fec = m_settings.m_fec;
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m_objCfg.Fs = (float) m_sampleRate;
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m_objCfg.Fm = (float) m_settings.m_symbolRate;
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m_objCfg.fastlock = m_settings.m_fastLock;
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m_objCfg.sampler = m_settings.m_filter;
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m_objCfg.rolloff = m_settings.m_rollOff; //0...1
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m_objCfg.rrc_rej = (float) m_settings.m_excursion; //dB
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m_objCfg.rrc_steps = 0; //auto
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switch(m_settings.m_modulation)
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{
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case DATVDemodSettings::BPSK:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::BPSK;
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break;
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case DATVDemodSettings::QPSK:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::QPSK;
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break;
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case DATVDemodSettings::PSK8:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::PSK8;
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break;
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case DATVDemodSettings::APSK16:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::APSK16;
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break;
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case DATVDemodSettings::APSK32:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::APSK32;
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break;
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case DATVDemodSettings::APSK64E:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::APSK64E;
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break;
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case DATVDemodSettings::QAM16:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::QAM16;
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break;
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case DATVDemodSettings::QAM64:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::QAM64;
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break;
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case DATVDemodSettings::QAM256:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::QAM256;
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break;
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default:
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m_objCfg.constellation = leansdr::cstln_lut<leansdr::eucl_ss, 256>::BPSK;
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break;
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}
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m_objCfg.allow_drift = m_settings.m_allowDrift;
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m_objCfg.anf = m_settings.m_notchFilters;
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m_objCfg.hard_metric = m_settings.m_hardMetric;
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m_objCfg.sampler = m_settings.m_filter;
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m_objCfg.viterbi = m_settings.m_viterbi;
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// Min buffer size for baseband data
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// scopes: 1024
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// ss_estimator: 1024
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// anf: 4096
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// cstln_receiver: reads in chunks of 128+1
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BUF_BASEBAND = 4096 * m_objCfg.buf_factor;
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// Min buffer size for IQ symbols
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// cstln_receiver: writes in chunks of 128/omega symbols (margin 128)
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// deconv_sync: reads at least 64+32
|
|
// A larger buffer improves performance significantly.
|
|
BUF_SYMBOLS = 1024 * m_objCfg.buf_factor;
|
|
|
|
// Min buffer size for unsynchronized bytes
|
|
// deconv_sync: writes 32 bytes
|
|
// mpeg_sync: reads up to 204*scan_syncs = 1632 bytes
|
|
BUF_BYTES = 2048 * m_objCfg.buf_factor;
|
|
|
|
// Min buffer size for synchronized (but interleaved) bytes
|
|
// mpeg_sync: writes 1 rspacket
|
|
// deinterleaver: reads 17*11*12+204 = 2448 bytes
|
|
BUF_MPEGBYTES = 2448 * m_objCfg.buf_factor;
|
|
|
|
// Min buffer size for packets: 1
|
|
BUF_PACKETS = m_objCfg.buf_factor;
|
|
|
|
// Min buffer size for misc measurements: 1
|
|
BUF_SLOW = m_objCfg.buf_factor;
|
|
|
|
m_lngExpectedReadIQ = BUF_BASEBAND;
|
|
|
|
m_objScheduler = new leansdr::scheduler();
|
|
|
|
//***************
|
|
p_rawiq = new leansdr::pipebuf<leansdr::cf32>(m_objScheduler, "rawiq", BUF_BASEBAND);
|
|
p_rawiq_writer = new leansdr::pipewriter<leansdr::cf32>(*p_rawiq);
|
|
p_preprocessed = p_rawiq;
|
|
|
|
// NOTCH FILTER
|
|
|
|
if (m_objCfg.anf>0)
|
|
{
|
|
p_autonotched = new leansdr::pipebuf<leansdr::cf32>(m_objScheduler, "autonotched", BUF_BASEBAND);
|
|
r_auto_notch = new leansdr::auto_notch<leansdr::f32>(m_objScheduler, *p_preprocessed, *p_autonotched, m_objCfg.anf, 0);
|
|
p_preprocessed = p_autonotched;
|
|
}
|
|
|
|
|
|
// FREQUENCY CORRECTION
|
|
|
|
//******** -> if ( m_objCfg.Fderot>0 )
|
|
|
|
// CNR ESTIMATION
|
|
|
|
p_cnr = new leansdr::pipebuf<leansdr::f32>(m_objScheduler, "cnr", BUF_SLOW);
|
|
|
|
if (m_objCfg.cnr == true)
|
|
{
|
|
r_cnr = new leansdr::cnr_fft<leansdr::f32>(m_objScheduler, *p_preprocessed, *p_cnr, m_objCfg.Fm/m_objCfg.Fs);
|
|
r_cnr->decimation = decimation(m_objCfg.Fs, 1); // 1 Hz
|
|
}
|
|
|
|
// FILTERING
|
|
|
|
int decim = 1;
|
|
|
|
//******** -> if ( m_objCfg.resample )
|
|
|
|
|
|
// DECIMATION
|
|
// (Unless already done in resampler)
|
|
|
|
//******** -> if ( !m_objCfg.resample && m_objCfg.decim>1 )
|
|
|
|
//Resampling FS
|
|
|
|
|
|
// Generic constellation receiver
|
|
|
|
p_symbols = new leansdr::pipebuf<leansdr::eucl_ss>(m_objScheduler, "PSK soft-symbols", BUF_SYMBOLS);
|
|
p_freq = new leansdr::pipebuf<leansdr::f32> (m_objScheduler, "freq", BUF_SLOW);
|
|
p_ss = new leansdr::pipebuf<leansdr::f32> (m_objScheduler, "SS", BUF_SLOW);
|
|
p_mer = new leansdr::pipebuf<leansdr::f32> (m_objScheduler, "MER", BUF_SLOW);
|
|
p_sampled = new leansdr::pipebuf<leansdr::cf32> (m_objScheduler, "PSK symbols", BUF_BASEBAND);
|
|
|
|
switch (m_objCfg.sampler)
|
|
{
|
|
case DATVDemodSettings::SAMP_NEAREST:
|
|
sampler = new leansdr::nearest_sampler<float>();
|
|
break;
|
|
case DATVDemodSettings::SAMP_LINEAR:
|
|
sampler = new leansdr::linear_sampler<float>();
|
|
break;
|
|
case DATVDemodSettings::SAMP_RRC:
|
|
{
|
|
if (m_objCfg.rrc_steps == 0)
|
|
{
|
|
// At least 64 discrete sampling points between symbols
|
|
m_objCfg.rrc_steps = std::max(1, (int)(64*m_objCfg.Fm / m_objCfg.Fs));
|
|
}
|
|
|
|
float Frrc = m_objCfg.Fs * m_objCfg.rrc_steps; // Sample freq of the RRC filter
|
|
float transition = (m_objCfg.Fm/2) * m_objCfg.rolloff;
|
|
int order = m_objCfg.rrc_rej * Frrc / (22*transition);
|
|
ncoeffs_sampler = leansdr::filtergen::root_raised_cosine(order, m_objCfg.Fm/Frrc, m_objCfg.rolloff, &coeffs_sampler);
|
|
sampler = new leansdr::fir_sampler<float,float>(ncoeffs_sampler, coeffs_sampler, m_objCfg.rrc_steps);
|
|
break;
|
|
}
|
|
default:
|
|
qCritical("DATVDemod::InitDATVFramework: Interpolator not implemented");
|
|
return;
|
|
}
|
|
|
|
m_objDemodulator = new leansdr::cstln_receiver<leansdr::f32, leansdr::eucl_ss>(
|
|
m_objScheduler,
|
|
sampler,
|
|
*p_preprocessed,
|
|
*p_symbols,
|
|
p_freq,
|
|
p_ss,
|
|
p_mer,
|
|
p_sampled);
|
|
|
|
if (m_objCfg.standard == DATVDemodSettings::DVB_S)
|
|
{
|
|
if ( m_objCfg.constellation != leansdr::cstln_lut<leansdr::eucl_ss, 256>::QPSK
|
|
&& m_objCfg.constellation != leansdr::cstln_lut<leansdr::eucl_ss, 256>::BPSK )
|
|
{
|
|
qWarning("DATVDemod::InitDATVFramework: non-standard constellation for DVB-S");
|
|
}
|
|
}
|
|
|
|
if (m_objCfg.standard == DATVDemodSettings::DVB_S2)
|
|
{
|
|
// For DVB-S2 testing only.
|
|
// Constellation should be determined from PL signalling.
|
|
qDebug("DATVDemod::InitDATVFramework: DVB-S2: Testing symbol sampler only.");
|
|
}
|
|
|
|
m_objDemodulator->cstln = make_dvbs2_constellation(m_objCfg.constellation, m_objCfg.fec);
|
|
|
|
if (m_objCfg.hard_metric) {
|
|
m_objDemodulator->cstln->harden();
|
|
}
|
|
|
|
m_objDemodulator->set_omega(m_objCfg.Fs/m_objCfg.Fm);
|
|
|
|
//******** if ( m_objCfg.Ftune )
|
|
//{
|
|
// m_objDemodulator->set_freq(m_objCfg.Ftune/m_objCfg.Fs);
|
|
//}
|
|
|
|
if (m_objCfg.allow_drift) {
|
|
m_objDemodulator->set_allow_drift(true);
|
|
}
|
|
|
|
//******** -> if ( m_objCfg.viterbi )
|
|
if (m_objCfg.viterbi) {
|
|
m_objDemodulator->pll_adjustment /= 6;
|
|
}
|
|
|
|
m_objDemodulator->meas_decimation = decimation(m_objCfg.Fs, m_objCfg.Finfo);
|
|
|
|
// TRACKING FILTERS
|
|
|
|
if (r_cnr)
|
|
{
|
|
r_cnr->freq_tap = &m_objDemodulator->freq_tap;
|
|
r_cnr->tap_multiplier = 1.0 / decim;
|
|
}
|
|
|
|
//constellation
|
|
|
|
if (m_objRegisteredTVScreen)
|
|
{
|
|
m_objRegisteredTVScreen->resizeTVScreen(256,256);
|
|
r_scope_symbols = new leansdr::datvconstellation<leansdr::f32>(m_objScheduler, *p_sampled, -128,128, nullptr, m_objRegisteredTVScreen);
|
|
r_scope_symbols->decimation = 1;
|
|
r_scope_symbols->cstln = &m_objDemodulator->cstln;
|
|
r_scope_symbols->calculate_cstln_points();
|
|
}
|
|
|
|
// DECONVOLUTION AND SYNCHRONIZATION
|
|
|
|
p_bytes = new leansdr::pipebuf<leansdr::u8>(m_objScheduler, "bytes", BUF_BYTES);
|
|
|
|
r_deconv = nullptr;
|
|
|
|
//******** -> if ( m_objCfg.viterbi )
|
|
|
|
if (m_objCfg.viterbi)
|
|
{
|
|
if (m_objCfg.fec == leansdr::FEC23 && (m_objDemodulator->cstln->nsymbols == 4 || m_objDemodulator->cstln->nsymbols == 64)) {
|
|
m_objCfg.fec = leansdr::FEC46;
|
|
}
|
|
|
|
//To uncomment -> Linking Problem : undefined symbol: _ZN7leansdr21viterbi_dec_interfaceIhhiiE6updateEPiS2_
|
|
r = new leansdr::viterbi_sync(m_objScheduler, (*p_symbols), (*p_bytes), m_objDemodulator->cstln, m_objCfg.fec);
|
|
|
|
if (m_objCfg.fastlock) {
|
|
r->resync_period = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
r_deconv = make_deconvol_sync_simple(m_objScheduler, (*p_symbols), (*p_bytes), m_objCfg.fec);
|
|
r_deconv->fastlock = m_objCfg.fastlock;
|
|
}
|
|
|
|
//******* -> if ( m_objCfg.hdlc )
|
|
|
|
p_mpegbytes = new leansdr::pipebuf<leansdr::u8> (m_objScheduler, "mpegbytes", BUF_MPEGBYTES);
|
|
p_lock = new leansdr::pipebuf<int> (m_objScheduler, "lock", BUF_SLOW);
|
|
p_locktime = new leansdr::pipebuf<leansdr::u32> (m_objScheduler, "locktime", BUF_PACKETS);
|
|
|
|
r_sync_mpeg = new leansdr::mpeg_sync<leansdr::u8, 0>(m_objScheduler, *p_bytes, *p_mpegbytes, r_deconv, p_lock, p_locktime);
|
|
r_sync_mpeg->fastlock = m_objCfg.fastlock;
|
|
|
|
// DEINTERLEAVING
|
|
|
|
p_rspackets = new leansdr::pipebuf<leansdr::rspacket<leansdr::u8> >(m_objScheduler, "RS-enc packets", BUF_PACKETS);
|
|
r_deinter = new leansdr::deinterleaver<leansdr::u8>(m_objScheduler, *p_mpegbytes, *p_rspackets);
|
|
|
|
// REED-SOLOMON
|
|
|
|
p_vbitcount = new leansdr::pipebuf<int>(m_objScheduler, "Bits processed", BUF_PACKETS);
|
|
p_verrcount = new leansdr::pipebuf<int>(m_objScheduler, "Bits corrected", BUF_PACKETS);
|
|
p_rtspackets = new leansdr::pipebuf<leansdr::tspacket>(m_objScheduler, "rand TS packets", BUF_PACKETS);
|
|
r_rsdec = new leansdr::rs_decoder<leansdr::u8, 0>(m_objScheduler, *p_rspackets, *p_rtspackets, p_vbitcount, p_verrcount);
|
|
|
|
// BER ESTIMATION
|
|
|
|
/*
|
|
p_vber = new pipebuf<float> (m_objScheduler, "VBER", BUF_SLOW);
|
|
r_vber = new rate_estimator<float> (m_objScheduler, *p_verrcount, *p_vbitcount, *p_vber);
|
|
r_vber->sample_size = m_objCfg.Fm/2; // About twice per second, depending on CR
|
|
// Require resolution better than 2E-5
|
|
if ( r_vber->sample_size < 50000 )
|
|
{
|
|
r_vber->sample_size = 50000;
|
|
}
|
|
*/
|
|
|
|
// DERANDOMIZATION
|
|
p_tspackets = new leansdr::pipebuf<leansdr::tspacket>(m_objScheduler, "TS packets", BUF_PACKETS);
|
|
r_derand = new leansdr::derandomizer(m_objScheduler, *p_rtspackets, *p_tspackets);
|
|
|
|
// OUTPUT
|
|
r_videoplayer = new leansdr::datvvideoplayer<leansdr::tspacket>(m_objScheduler, *p_tspackets, m_objVideoStream);
|
|
|
|
m_blnDVBInitialized = true;
|
|
}
|
|
|
|
void DATVDemod::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool firstOfBurst)
|
|
{
|
|
(void) firstOfBurst;
|
|
float fltI;
|
|
float fltQ;
|
|
leansdr::cf32 objIQ;
|
|
//Complex objC;
|
|
fftfilt::cmplx *objRF;
|
|
int intRFOut;
|
|
double magSq;
|
|
|
|
//********** Bis repetita : Let's rock and roll buddy ! **********
|
|
|
|
#ifdef EXTENDED_DIRECT_SAMPLE
|
|
|
|
qint16 * ptrBuffer;
|
|
qint32 intLen;
|
|
|
|
//********** Reading direct samples **********
|
|
|
|
SampleVector::const_iterator it = begin;
|
|
intLen = it->intLen;
|
|
ptrBuffer = it->ptrBuffer;
|
|
ptrBufferToRelease = ptrBuffer;
|
|
++it;
|
|
|
|
for(qint32 intInd=0; intInd<intLen-1; intInd +=2)
|
|
{
|
|
|
|
fltI= ((qint32) (*ptrBuffer)) << 4;
|
|
ptrBuffer ++;
|
|
fltQ= ((qint32) (*ptrBuffer)) << 4;
|
|
ptrBuffer ++;
|
|
|
|
#else
|
|
|
|
for (SampleVector::const_iterator it = begin; it != end; ++it /* ++it **/)
|
|
{
|
|
fltI = it->real();
|
|
fltQ = it->imag();
|
|
#endif
|
|
|
|
|
|
//********** demodulation **********
|
|
|
|
|
|
if (m_blnNeedConfigUpdate)
|
|
{
|
|
m_objSettingsMutex.lock();
|
|
m_blnNeedConfigUpdate=false;
|
|
InitDATVFramework();
|
|
m_objSettingsMutex.unlock();
|
|
}
|
|
|
|
|
|
//********** iq stream ****************
|
|
|
|
Complex objC(fltI,fltQ);
|
|
|
|
objC *= m_objNCO.nextIQ();
|
|
|
|
intRFOut = m_objRFFilter->runFilt(objC, &objRF); // filter RF before demod
|
|
|
|
for (int intI = 0 ; intI < intRFOut; intI++)
|
|
{
|
|
objIQ.re = objRF->real();
|
|
objIQ.im = objRF->imag();
|
|
magSq = objIQ.re*objIQ.re + objIQ.im*objIQ.im;
|
|
m_objMagSqAverage(magSq);
|
|
|
|
objRF ++;
|
|
|
|
if (m_blnDVBInitialized
|
|
&& (p_rawiq_writer!=nullptr)
|
|
&& (m_objScheduler!=nullptr))
|
|
{
|
|
p_rawiq_writer->write(objIQ);
|
|
m_lngReadIQ++;
|
|
|
|
//Leave +1 by safety
|
|
if((m_lngReadIQ+1)>=p_rawiq_writer->writable())
|
|
{
|
|
m_objScheduler->step();
|
|
|
|
m_lngReadIQ=0;
|
|
delete p_rawiq_writer;
|
|
p_rawiq_writer = new leansdr::pipewriter<leansdr::cf32>(*p_rawiq);
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
void DATVDemod::start()
|
|
{
|
|
m_audioFifo.clear();
|
|
}
|
|
|
|
void DATVDemod::stop()
|
|
{
|
|
}
|
|
|
|
bool DATVDemod::handleMessage(const Message& cmd)
|
|
{
|
|
if (DownChannelizer::MsgChannelizerNotification::match(cmd))
|
|
{
|
|
DownChannelizer::MsgChannelizerNotification& objNotif = (DownChannelizer::MsgChannelizerNotification&) cmd;
|
|
|
|
qDebug() << "DATVDemod::handleMessage: MsgChannelizerNotification:"
|
|
<< " m_intSampleRate: " << objNotif.getSampleRate()
|
|
<< " m_intFrequencyOffset: " << objNotif.getFrequencyOffset();
|
|
applyChannelSettings(objNotif.getSampleRate(), objNotif.getFrequencyOffset());
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureChannelizer::match(cmd))
|
|
{
|
|
MsgConfigureChannelizer& cfg = (MsgConfigureChannelizer&) cmd;
|
|
|
|
m_channelizer->configure(m_channelizer->getInputMessageQueue(),
|
|
m_channelizer->getInputSampleRate(), // do not change sample rate
|
|
cfg.getCenterFrequency());
|
|
|
|
qDebug() << "DATVDemod::handleMessage: MsgConfigureChannelizer: sampleRate: " << m_channelizer->getInputSampleRate()
|
|
<< " centerFrequency: " << cfg.getCenterFrequency();
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureDATVDemod::match(cmd))
|
|
{
|
|
MsgConfigureDATVDemod& objCfg = (MsgConfigureDATVDemod&) cmd;
|
|
qDebug() << "DATVDemod::handleMessage: MsgConfigureDATVDemod";
|
|
applySettings(objCfg.getSettings(), objCfg.getForce());
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void DATVDemod::applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force)
|
|
{
|
|
qDebug() << "DATVDemod::applyChannelSettings:"
|
|
<< " inputSampleRate: " << inputSampleRate
|
|
<< " inputFrequencyOffset: " << inputFrequencyOffset;
|
|
|
|
if ((m_settings.m_centerFrequency != inputFrequencyOffset) ||
|
|
(m_sampleRate != inputSampleRate) || force)
|
|
{
|
|
m_objNCO.setFreq(-(float) inputFrequencyOffset, (float) inputSampleRate);
|
|
}
|
|
|
|
if ((m_sampleRate != inputSampleRate) || force)
|
|
{
|
|
m_objSettingsMutex.lock();
|
|
//Bandpass filter shaping
|
|
Real fltLowCut = -((float) m_settings.m_rfBandwidth / 2.0) / (float) inputSampleRate;
|
|
Real fltHiCut = ((float) m_settings.m_rfBandwidth / 2.0) / (float) inputSampleRate;
|
|
m_objRFFilter->create_filter(fltLowCut, fltHiCut);
|
|
m_blnNeedConfigUpdate = true;
|
|
m_objSettingsMutex.unlock();
|
|
}
|
|
|
|
m_sampleRate = inputSampleRate;
|
|
m_settings.m_centerFrequency = inputFrequencyOffset;
|
|
}
|
|
|
|
void DATVDemod::applySettings(const DATVDemodSettings& settings, bool force)
|
|
{
|
|
QString msg = tr("DATVDemod::applySettings: force: %1").arg(force);
|
|
settings.debug(msg);
|
|
|
|
if (m_sampleRate == 0) {
|
|
return;
|
|
}
|
|
|
|
if ((settings.m_audioDeviceName != m_settings.m_audioDeviceName) || force)
|
|
{
|
|
AudioDeviceManager *audioDeviceManager = DSPEngine::instance()->getAudioDeviceManager();
|
|
int audioDeviceIndex = audioDeviceManager->getOutputDeviceIndex(settings.m_audioDeviceName);
|
|
audioDeviceManager->addAudioSink(&m_audioFifo, getInputMessageQueue(), audioDeviceIndex); // removes from current if necessary
|
|
// uint32_t audioSampleRate = audioDeviceManager->getOutputSampleRate(audioDeviceIndex);
|
|
|
|
// if (m_audioSampleRate != audioSampleRate) {
|
|
// applyAudioSampleRate(audioSampleRate);
|
|
// }
|
|
}
|
|
|
|
if ((settings.m_audioVolume) != (m_settings.m_audioVolume) || force)
|
|
{
|
|
if (m_objRegisteredVideoRender) {
|
|
m_objRegisteredVideoRender->setAudioVolume(settings.m_audioVolume);
|
|
}
|
|
}
|
|
|
|
if ((settings.m_audioMute) != (m_settings.m_audioMute) || force)
|
|
{
|
|
if (m_objRegisteredVideoRender) {
|
|
m_objRegisteredVideoRender->setAudioMute(settings.m_audioMute);
|
|
}
|
|
}
|
|
|
|
if ((settings.m_videoMute) != (m_settings.m_videoMute) || force)
|
|
{
|
|
if (m_objRegisteredVideoRender) {
|
|
m_objRegisteredVideoRender->setVideoMute(settings.m_videoMute);
|
|
}
|
|
}
|
|
|
|
if (m_settings.isDifferent(settings) || force)
|
|
{
|
|
m_objSettingsMutex.lock();
|
|
|
|
if ((m_settings.m_rfBandwidth != settings.m_rfBandwidth)
|
|
|| force)
|
|
{
|
|
|
|
//Bandpass filter shaping
|
|
Real fltLowCut = -((float) settings.m_rfBandwidth / 2.0) / (float) m_sampleRate;
|
|
Real fltHiCut = ((float) settings.m_rfBandwidth / 2.0) / (float) m_sampleRate;
|
|
m_objRFFilter->create_filter(fltLowCut, fltHiCut);
|
|
}
|
|
|
|
if ((m_settings.m_centerFrequency != settings.m_centerFrequency)
|
|
|| force)
|
|
{
|
|
m_objNCO.setFreq(-(float) settings.m_centerFrequency, (float) m_sampleRate);
|
|
}
|
|
|
|
m_objSettingsMutex.unlock();
|
|
m_blnNeedConfigUpdate = true;
|
|
}
|
|
|
|
m_settings = settings;
|
|
}
|
|
|
|
int DATVDemod::GetSampleRate()
|
|
{
|
|
return m_sampleRate;
|
|
}
|