kopia lustrzana https://github.com/f4exb/sdrangel
279 wiersze
10 KiB
C++
279 wiersze
10 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2019 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 <boost/crc.hpp>
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#include <boost/cstdint.hpp>
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#include "remotesourceworker.h"
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#include "remotesourcesource.h"
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RemoteSourceSource::RemoteSourceSource() :
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m_running(false),
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m_sourceWorker(nullptr),
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m_nbCorrectableErrors(0),
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m_nbUncorrectableErrors(0),
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m_channelSampleRate(48000)
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{
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connect(&m_dataQueue, SIGNAL(dataBlockEnqueued()), this, SLOT(handleData()), Qt::QueuedConnection);
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m_cm256p = m_cm256.isInitialized() ? &m_cm256 : 0;
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m_currentMeta.init();
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applyChannelSettings(m_channelSampleRate, true);
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}
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RemoteSourceSource::~RemoteSourceSource()
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{}
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void RemoteSourceSource::pull(SampleVector::iterator begin, unsigned int nbSamples)
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{
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std::for_each(
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begin,
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begin + nbSamples,
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[this](Sample& s) {
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pullOne(s);
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}
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);
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}
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void RemoteSourceSource::pullOne(Sample& sample)
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{
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m_dataReadQueue.readSample(sample, true); // true is scale for Tx
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Complex ci;
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if (m_interpolatorDistance > 1.0f) // decimate
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{
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getSample();
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while (!m_interpolator.decimate(&m_interpolatorDistanceRemain, m_modSample, &ci)) {
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getSample();
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}
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}
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else
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{
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if (m_interpolator.interpolate(&m_interpolatorDistanceRemain, m_modSample, &ci)) {
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getSample();
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}
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}
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m_interpolatorDistanceRemain += m_interpolatorDistance;
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sample.m_real = (FixReal) ci.real();
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sample.m_imag = (FixReal) ci.imag();
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}
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void RemoteSourceSource::getSample()
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{
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Sample s;
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m_dataReadQueue.readSample(s, true); // true is scale for Tx
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m_modSample.real(s.m_real);
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m_modSample.imag(s.m_imag);
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}
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void RemoteSourceSource::start()
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{
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qDebug("RemoteSourceSource::start");
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if (m_running) {
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stop();
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}
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m_sourceWorker = new RemoteSourceWorker(&m_dataQueue);
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m_sourceWorker->moveToThread(&m_sourceWorkerThread);
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startWorker();
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m_sourceWorker->dataBind(m_settings.m_dataAddress, m_settings.m_dataPort);
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m_running = true;
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}
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void RemoteSourceSource::stop()
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{
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qDebug("RemoteSourceSource::stop");
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if (m_sourceWorker)
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{
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stopWorker();
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m_sourceWorker->deleteLater();
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m_sourceWorker = 0;
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}
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m_running = false;
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}
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void RemoteSourceSource::startWorker()
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{
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m_sourceWorker->startWork();
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m_sourceWorkerThread.start();
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}
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void RemoteSourceSource::stopWorker()
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{
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m_sourceWorker->stopWork();
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m_sourceWorkerThread.quit();
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m_sourceWorkerThread.wait();
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}
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void RemoteSourceSource::handleData()
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{
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RemoteDataBlock* dataBlock;
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while (m_running && ((dataBlock = m_dataQueue.pop()) != 0)) {
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handleDataBlock(dataBlock);
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}
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}
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void RemoteSourceSource::handleDataBlock(RemoteDataBlock* dataBlock)
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{
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(void) dataBlock;
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if (dataBlock->m_rxControlBlock.m_blockCount < RemoteNbOrginalBlocks)
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{
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qWarning("RemoteSourceSource::handleDataBlock: incomplete data block: not processing");
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}
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else
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{
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int blockCount = 0;
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for (int blockIndex = 0; blockIndex < 256; blockIndex++)
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{
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if ((blockIndex == 0) && (dataBlock->m_rxControlBlock.m_metaRetrieved))
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{
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m_cm256DescriptorBlocks[blockCount].Index = 0;
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m_cm256DescriptorBlocks[blockCount].Block = (void *) &(dataBlock->m_superBlocks[0].m_protectedBlock);
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blockCount++;
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}
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else if (dataBlock->m_superBlocks[blockIndex].m_header.m_blockIndex != 0)
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{
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m_cm256DescriptorBlocks[blockCount].Index = dataBlock->m_superBlocks[blockIndex].m_header.m_blockIndex;
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m_cm256DescriptorBlocks[blockCount].Block = (void *) &(dataBlock->m_superBlocks[blockIndex].m_protectedBlock);
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blockCount++;
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}
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}
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//qDebug("RemoteSourceSource::handleDataBlock: frame: %u blocks: %d", dataBlock.m_rxControlBlock.m_frameIndex, blockCount);
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// Need to use the CM256 recovery
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if (m_cm256p &&(dataBlock->m_rxControlBlock.m_originalCount < RemoteNbOrginalBlocks))
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{
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qDebug("RemoteSourceSource::handleDataBlock: %d recovery blocks", dataBlock->m_rxControlBlock.m_recoveryCount);
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CM256::cm256_encoder_params paramsCM256;
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paramsCM256.BlockBytes = sizeof(RemoteProtectedBlock); // never changes
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paramsCM256.OriginalCount = RemoteNbOrginalBlocks; // never changes
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if (m_currentMeta.m_tv_sec == 0) {
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paramsCM256.RecoveryCount = dataBlock->m_rxControlBlock.m_recoveryCount;
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} else {
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paramsCM256.RecoveryCount = m_currentMeta.m_nbFECBlocks;
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}
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// update counters
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if (dataBlock->m_rxControlBlock.m_originalCount < RemoteNbOrginalBlocks - paramsCM256.RecoveryCount) {
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m_nbUncorrectableErrors += RemoteNbOrginalBlocks - paramsCM256.RecoveryCount - dataBlock->m_rxControlBlock.m_originalCount;
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} else {
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m_nbCorrectableErrors += dataBlock->m_rxControlBlock.m_recoveryCount;
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}
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if (m_cm256.cm256_decode(paramsCM256, m_cm256DescriptorBlocks)) // CM256 decode
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{
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qWarning() << "RemoteSourceSource::handleDataBlock: decode CM256 error:"
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<< " m_originalCount: " << dataBlock->m_rxControlBlock.m_originalCount
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<< " m_recoveryCount: " << dataBlock->m_rxControlBlock.m_recoveryCount;
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}
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else
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{
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for (int ir = 0; ir < dataBlock->m_rxControlBlock.m_recoveryCount; ir++) // restore missing blocks
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{
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int recoveryIndex = RemoteNbOrginalBlocks - dataBlock->m_rxControlBlock.m_recoveryCount + ir;
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int blockIndex = m_cm256DescriptorBlocks[recoveryIndex].Index;
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RemoteProtectedBlock *recoveredBlock =
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(RemoteProtectedBlock *) m_cm256DescriptorBlocks[recoveryIndex].Block;
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memcpy((void *) &(dataBlock->m_superBlocks[blockIndex].m_protectedBlock), recoveredBlock, sizeof(RemoteProtectedBlock));
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if ((blockIndex == 0) && !dataBlock->m_rxControlBlock.m_metaRetrieved) {
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dataBlock->m_rxControlBlock.m_metaRetrieved = true;
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}
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}
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}
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}
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// Validate block zero and retrieve its data
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if (dataBlock->m_rxControlBlock.m_metaRetrieved)
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{
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RemoteMetaDataFEC *metaData = (RemoteMetaDataFEC *) &(dataBlock->m_superBlocks[0].m_protectedBlock);
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boost::crc_32_type crc32;
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crc32.process_bytes(metaData, sizeof(RemoteMetaDataFEC)-4);
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if (crc32.checksum() == metaData->m_crc32)
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{
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if (!(m_currentMeta == *metaData))
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{
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printMeta("RemoteSourceSource::handleDataBlock", metaData);
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if (m_currentMeta.m_sampleRate != metaData->m_sampleRate) {
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emit newRemoteSampleRate(metaData->m_sampleRate);
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// returns via applyChannelSettings to set interpolator
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}
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}
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m_currentMeta = *metaData;
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}
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else
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{
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qWarning() << "RemoteSource::handleDataBlock: recovered meta: invalid CRC32";
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}
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}
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m_dataReadQueue.push(dataBlock); // Push into R/W buffer
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}
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}
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void RemoteSourceSource::printMeta(const QString& header, RemoteMetaDataFEC *metaData)
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{
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qDebug().noquote() << header << ": "
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<< "|" << metaData->m_centerFrequency
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<< ":" << metaData->m_sampleRate
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<< ":" << (int) (metaData->m_sampleBytes & 0xF)
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<< ":" << (int) metaData->m_sampleBits
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<< ":" << (int) metaData->m_nbOriginalBlocks
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<< ":" << (int) metaData->m_nbFECBlocks
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<< "|" << metaData->m_tv_sec
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<< ":" << metaData->m_tv_usec
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<< "|";
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}
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void RemoteSourceSource::dataBind(const QString& dataAddress, uint16_t dataPort)
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{
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if (m_sourceWorker) {
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m_sourceWorker->dataBind(dataAddress, dataPort);
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}
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m_settings.m_dataAddress = dataAddress;
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m_settings.m_dataPort = dataPort;
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}
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void RemoteSourceSource::applyChannelSettings(int channelSampleRate, bool force)
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{
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qDebug() << "RemoteSourceSource::applyChannelSettings:"
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<< " channelSampleRate: " << channelSampleRate
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<< " m_currentMeta.m_sampleRate: " << m_currentMeta.m_sampleRate
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<< " force: " << force;
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if ((channelSampleRate != m_channelSampleRate) || force)
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{
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m_interpolatorDistanceRemain = 0;
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m_interpolatorConsumed = false;
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m_interpolatorDistance = (Real) m_currentMeta.m_sampleRate / (Real) channelSampleRate;
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m_interpolator.create(48, m_currentMeta.m_sampleRate, m_currentMeta.m_sampleRate / 2.2, 3.0);
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}
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m_channelSampleRate = channelSampleRate;
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} |