SDRPostThread::SDRPostThread() : IOThread(), buffers("SDRPostThreadBuffers"), visualDataBuffers("SDRPostThreadVisualDataBuffers"), frequency(0) {
iqDataInQueue = NULL;
iqDataOutQueue = NULL;
iqVisualQueue = NULL;
numChannels = 0;
channelizer = NULL;
sampleRate = 0;
nRunDemods = 0;
visFrequency.store(0);
visBandwidth.store(0);
doRefresh.store(false);
dcFilter = iirfilt_crcf_create_dc_blocker(0.0005);
}
void SDRPostThread::run() {
#ifdef __APPLE__
pthread_t tID = pthread_self(); // ID of this thread
int priority = sched_get_priority_max( SCHED_FIFO) - 1;
sched_param prio = {priority}; // scheduling priority of thread
pthread_setschedparam(tID, SCHED_FIFO, &prio);
#endif
dcFilter = iirfilt_crcf_create_dc_blocker(0.0005);
std::cout << "SDR post-processing thread started.." << std::endl;
iqDataInQueue = (SDRThreadIQDataQueue*)getInputQueue("IQDataInput");
iqDataOutQueue = (DemodulatorThreadInputQueue*)getOutputQueue("IQDataOutput");
iqVisualQueue = (DemodulatorThreadInputQueue*)getOutputQueue("IQVisualDataOutput");
ReBuffer<DemodulatorThreadIQData> buffers;
std::vector<liquid_float_complex> fpData;
std::vector<liquid_float_complex> dataOut;
iqDataInQueue->set_max_num_items(0);
while (!terminated) {
SDRThreadIQData *data_in;
iqDataInQueue->pop(data_in);
// std::lock_guard < std::mutex > lock(data_in->m_mutex);
if (data_in && data_in->data.size()) {
int dataSize = data_in->data.size()/2;
if (dataSize > fpData.capacity()) {
fpData.reserve(dataSize);
dataOut.reserve(dataSize);
}
if (dataSize != fpData.size()) {
fpData.resize(dataSize);
dataOut.resize(dataSize);
}
if (swapIQ) {
for (int i = 0; i < dataSize; i++) {
fpData[i] = _lut_swap[*((uint16_t*)&data_in->data[2*i])];
}
} else {
for (int i = 0; i < dataSize; i++) {
fpData[i] = _lut[*((uint16_t*)&data_in->data[2*i])];
}
}
iirfilt_crcf_execute_block(dcFilter, &fpData[0], dataSize, &dataOut[0]);
if (iqVisualQueue != NULL && !iqVisualQueue->full()) {
DemodulatorThreadIQData *visualDataOut = visualDataBuffers.getBuffer();
visualDataOut->setRefCount(1);
int num_vis_samples = dataOut.size();
// if (visualDataOut->data.size() < num_vis_samples) {
// if (visualDataOut->data.capacity() < num_vis_samples) {
// visualDataOut->data.reserve(num_vis_samples);
// }
// visualDataOut->data.resize(num_vis_samples);
// }
//
visualDataOut->frequency = data_in->frequency;
visualDataOut->sampleRate = data_in->sampleRate;
visualDataOut->data.assign(dataOut.begin(), dataOut.begin() + num_vis_samples);
iqVisualQueue->push(visualDataOut);
}
busy_demod.lock();
int activeDemods = 0;
bool pushedData = false;
if (demodulators.size() || iqDataOutQueue != NULL) {
std::vector<DemodulatorInstance *>::iterator demod_i;
for (demod_i = demodulators.begin(); demod_i != demodulators.end(); demod_i++) {
DemodulatorInstance *demod = *demod_i;
if (demod->getFrequency() != data_in->frequency
&& abs(data_in->frequency - demod->getFrequency()) > (wxGetApp().getSampleRate() / 2)) {
continue;
}
activeDemods++;
}
if (iqDataOutQueue != NULL) {
activeDemods++;
}
DemodulatorThreadIQData *demodDataOut = buffers.getBuffer();
// std::lock_guard < std::mutex > lock(demodDataOut->m_mutex);
demodDataOut->frequency = data_in->frequency;
demodDataOut->sampleRate = data_in->sampleRate;
demodDataOut->setRefCount(activeDemods);
demodDataOut->data.assign(dataOut.begin(), dataOut.end());
for (demod_i = demodulators.begin(); demod_i != demodulators.end(); demod_i++) {
DemodulatorInstance *demod = *demod_i;
DemodulatorThreadInputQueue *demodQueue = demod->getIQInputDataPipe();
if (abs(data_in->frequency - demod->getFrequency()) > (wxGetApp().getSampleRate() / 2)) {
if (demod->isActive() && !demod->isFollow() && !demod->isTracking()) {
demod->setActive(false);
DemodulatorThreadIQData *dummyDataOut = new DemodulatorThreadIQData;
dummyDataOut->frequency = data_in->frequency;
dummyDataOut->sampleRate = data_in->sampleRate;
demodQueue->push(dummyDataOut);
}
if (demod->isFollow() && wxGetApp().getFrequency() != demod->getFrequency()) {
wxGetApp().setFrequency(demod->getFrequency());
}
} else if (!demod->isActive()) {
demod->setActive(true);
if (wxGetApp().getDemodMgr().getLastActiveDemodulator() == NULL) {
wxGetApp().getDemodMgr().setActiveDemodulator(demod);
}
}
if (!demod->isActive()) {
continue;
}
if (demod->isFollow()) {
demod->setFollow(false);
}
demodQueue->push(demodDataOut);
pushedData = true;
}
if (iqDataOutQueue != NULL) {
if (!iqDataOutQueue->full()) {
iqDataOutQueue->push(demodDataOut);
pushedData = true;
} else {
demodDataOut->decRefCount();
}
}
if (!pushedData && iqDataOutQueue == NULL) {
demodDataOut->setRefCount(0);
}
}
busy_demod.unlock();
}
data_in->decRefCount();
}
// buffers.purge();
if (iqVisualQueue && !iqVisualQueue->empty()) {
DemodulatorThreadIQData *visualDataDummy;
iqVisualQueue->pop(visualDataDummy);
}
// visualDataBuffers.purge();
std::cout << "SDR post-processing thread done." << std::endl;
}