kopia lustrzana https://github.com/f4exb/sdrangel
266 wiersze
9.9 KiB
C++
266 wiersze
9.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 Edouard Griffiths, F4EXB. //
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// //
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// SDRdaemon sink channel (Rx) //
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// //
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// SDRdaemon is a detached SDR front end that handles the interface with a //
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// physical device and sends or receives the I/Q samples stream to or from a //
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// SDRangel instance via UDP. It is controlled via a Web REST API. //
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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 <sys/time.h>
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#include <unistd.h>
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#include <boost/crc.hpp>
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#include <boost/cstdint.hpp>
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#include "util/simpleserializer.h"
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#include "dsp/threadedbasebandsamplesink.h"
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#include "dsp/downchannelizer.h"
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#include "dsp/dspcommands.h"
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#include "device/devicesourceapi.h"
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#include "channel/sdrdaemonchannelsinkthread.h"
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#include "sdrdaemonchannelsink.h"
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const QString SDRDaemonChannelSink::m_channelIdURI = "sdrangel.channel.sdrdaemonsink";
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const QString SDRDaemonChannelSink::m_channelId = "SDRDaemonChannelSink";
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SDRDaemonChannelSink::SDRDaemonChannelSink(DeviceSourceAPI *deviceAPI) :
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ChannelSinkAPI(m_channelIdURI),
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m_deviceAPI(deviceAPI),
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m_running(false),
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m_sinkThread(0),
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m_txBlockIndex(0),
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m_frameCount(0),
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m_sampleIndex(0),
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m_dataBlock(0),
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m_centerFrequency(0),
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m_sampleRate(48000),
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m_sampleBytes(SDR_RX_SAMP_SZ == 24 ? 4 : 2),
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m_nbBlocksFEC(0),
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m_txDelay(100),
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m_dataAddress("127.0.0.1"),
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m_dataPort(9090)
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{
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setObjectName(m_channelId);
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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->addThreadedSink(m_threadedChannelizer);
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m_deviceAPI->addChannelAPI(this);
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m_cm256p = m_cm256.isInitialized() ? &m_cm256 : 0;
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}
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SDRDaemonChannelSink::~SDRDaemonChannelSink()
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{
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m_dataBlockMutex.lock();
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if (m_dataBlock && !m_dataBlock->m_controlBlock.m_complete) {
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delete m_dataBlock;
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}
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m_dataBlockMutex.unlock();
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m_deviceAPI->removeChannelAPI(this);
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m_deviceAPI->removeThreadedSink(m_threadedChannelizer);
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delete m_threadedChannelizer;
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delete m_channelizer;
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}
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void SDRDaemonChannelSink::setTxDelay(int txDelay)
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{
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qDebug() << "SDRDaemonChannelSink::setTxDelay: txDelay: " << txDelay;
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m_txDelay = txDelay;
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}
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void SDRDaemonChannelSink::setNbBlocksFEC(int nbBlocksFEC)
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{
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qDebug() << "SDRDaemonChannelSink::setNbBlocksFEC: nbBlocksFEC: " << nbBlocksFEC;
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m_nbBlocksFEC = nbBlocksFEC;
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}
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void SDRDaemonChannelSink::feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool firstOfBurst __attribute__((unused)))
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{
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SampleVector::const_iterator it = begin;
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while (it != end)
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{
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int inSamplesIndex = it - begin;
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int inRemainingSamples = end - it;
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if (m_txBlockIndex == 0)
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{
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struct timeval tv;
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SDRDaemonMetaDataFEC metaData;
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gettimeofday(&tv, 0);
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metaData.m_centerFrequency = m_centerFrequency;
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metaData.m_sampleRate = m_sampleRate;
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metaData.m_sampleBytes = m_sampleBytes;
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metaData.m_sampleBits = 0; // TODO: deprecated
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metaData.m_nbOriginalBlocks = SDRDaemonNbOrginalBlocks;
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metaData.m_nbFECBlocks = m_nbBlocksFEC;
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metaData.m_tv_sec = tv.tv_sec;
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metaData.m_tv_usec = tv.tv_usec;
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if (!m_dataBlock) { // on the very first cycle there is no data block allocated
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m_dataBlock = new SDRDaemonDataBlock();
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}
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boost::crc_32_type crc32;
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crc32.process_bytes(&metaData, 20);
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metaData.m_crc32 = crc32.checksum();
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SDRDaemonSuperBlock& superBlock = m_dataBlock->m_superBlocks[0]; // first block
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superBlock.init();
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superBlock.m_header.m_frameIndex = m_frameCount;
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superBlock.m_header.m_blockIndex = m_txBlockIndex;
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memcpy((void *) &superBlock.m_protectedBlock, (const void *) &metaData, sizeof(SDRDaemonMetaDataFEC));
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if (!(metaData == m_currentMetaFEC))
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{
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qDebug() << "SDRDaemonChannelSink::feed: meta: "
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<< "|" << metaData.m_centerFrequency
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<< ":" << metaData.m_sampleRate
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<< ":" << (int) metaData.m_sampleBytes
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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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m_currentMetaFEC = metaData;
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}
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m_txBlockIndex = 1; // next Tx block with data
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} // block zero
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// TODO: handle different sample sizes...
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if (m_sampleIndex + inRemainingSamples < SDRDaemonSamplesPerBlock) // there is still room in the current super block
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{
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memcpy((void *) &m_superBlock.m_protectedBlock.m_samples[m_sampleIndex],
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(const void *) &(*(begin+inSamplesIndex)),
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inRemainingSamples * sizeof(Sample));
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m_sampleIndex += inRemainingSamples;
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it = end; // all input samples are consumed
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}
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else // complete super block and initiate the next if not end of frame
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{
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memcpy((void *) &m_superBlock.m_protectedBlock.m_samples[m_sampleIndex],
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(const void *) &(*(begin+inSamplesIndex)),
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(SDRDaemonSamplesPerBlock - m_sampleIndex) * sizeof(Sample));
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it += SDRDaemonSamplesPerBlock - m_sampleIndex;
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m_sampleIndex = 0;
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m_superBlock.m_header.m_frameIndex = m_frameCount;
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m_superBlock.m_header.m_blockIndex = m_txBlockIndex;
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m_dataBlock->m_superBlocks[m_txBlockIndex] = m_superBlock;
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if (m_txBlockIndex == SDRDaemonNbOrginalBlocks - 1) // frame complete
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{
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m_dataBlockMutex.lock();
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m_dataBlock->m_controlBlock.m_frameIndex = m_frameCount;
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m_dataBlock->m_controlBlock.m_processed = false;
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m_dataBlock->m_controlBlock.m_complete = true;
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m_dataBlock->m_controlBlock.m_nbBlocksFEC = m_nbBlocksFEC;
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m_dataBlock->m_controlBlock.m_txDelay = m_txDelay;
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m_dataBlock->m_controlBlock.m_dataAddress = m_dataAddress;
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m_dataBlock->m_controlBlock.m_dataPort = m_dataPort;
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m_dataQueue.push(m_dataBlock);
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m_dataBlock = new SDRDaemonDataBlock(); // create a new one immediately
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m_dataBlockMutex.unlock();
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m_txBlockIndex = 0;
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m_frameCount++;
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}
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else
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{
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m_txBlockIndex++;
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}
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}
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}
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}
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void SDRDaemonChannelSink::start()
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{
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qDebug("SDRDaemonChannelSink::start");
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memset((void *) &m_currentMetaFEC, 0, sizeof(SDRDaemonMetaDataFEC));
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if (m_running) {
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stop();
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}
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m_sinkThread = new SDRDaemonChannelSinkThread(&m_dataQueue, m_cm256p);
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m_sinkThread->startStop(true);
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m_running = true;
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}
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void SDRDaemonChannelSink::stop()
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{
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qDebug("SDRDaemonChannelSink::stop");
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if (m_sinkThread != 0)
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{
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m_sinkThread->startStop(false);
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m_sinkThread->deleteLater();
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m_sinkThread = 0;
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}
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m_running = false;
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}
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bool SDRDaemonChannelSink::handleMessage(const Message& cmd __attribute__((unused)))
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{
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if (DownChannelizer::MsgChannelizerNotification::match(cmd))
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{
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DownChannelizer::MsgChannelizerNotification& notif = (DownChannelizer::MsgChannelizerNotification&) cmd;
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qDebug() << "SDRDaemonChannelSink::handleMessage: MsgChannelizerNotification:"
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<< " channelSampleRate: " << notif.getSampleRate()
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<< " offsetFrequency: " << notif.getFrequencyOffset();
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if (notif.getSampleRate() > 0) {
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setSampleRate(notif.getSampleRate());
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}
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return true;
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}
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else if (DSPSignalNotification::match(cmd))
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{
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DSPSignalNotification& notif = (DSPSignalNotification&) cmd;
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qDebug() << "SDRDaemonChannelSink::handleMessage: DSPSignalNotification:"
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<< " inputSampleRate: " << notif.getSampleRate()
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<< " centerFrequency: " << notif.getCenterFrequency();
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setCenterFrequency(notif.getCenterFrequency());
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return true;
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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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QByteArray SDRDaemonChannelSink::serialize() const
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{
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SimpleSerializer s(1);
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return s.final();
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}
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bool SDRDaemonChannelSink::deserialize(const QByteArray& data __attribute__((unused)))
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{
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return false;
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}
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