CubicSDR/src/demod/DemodulatorWorkerThread.cpp

62 lines
2.2 KiB
C++
Raw Normal View History

2014-11-30 23:33:55 -05:00
#include "DemodulatorWorkerThread.h"
#include "CubicSDRDefs.h"
#include <vector>
DemodulatorWorkerThread::DemodulatorWorkerThread(DemodulatorThreadWorkerCommandQueue* in, DemodulatorThreadWorkerResultQueue* out) :
terminated(false), commandQueue(in), resultQueue(out) {
}
DemodulatorWorkerThread::~DemodulatorWorkerThread() {
}
void DemodulatorWorkerThread::threadMain() {
std::cout << "Demodulator worker thread started.." << std::endl;
while (!terminated) {
bool filterChanged = false;
DemodulatorWorkerThreadCommand filterCommand;
DemodulatorWorkerThreadCommand command;
bool done = false;
while (!done) {
commandQueue->pop(command);
switch (command.cmd) {
case DemodulatorWorkerThreadCommand::DEMOD_WORKER_THREAD_CMD_BUILD_FILTERS:
filterChanged = true;
filterCommand = command;
break;
}
done = commandQueue->empty();
}
if (filterChanged && !terminated) {
DemodulatorWorkerThreadResult result(DemodulatorWorkerThreadResult::DEMOD_WORKER_THREAD_RESULT_FILTERS);
2014-11-30 23:33:55 -05:00
2015-01-11 17:08:16 -05:00
result.iqResampleRatio = (double) (filterCommand.bandwidth) / (double) filterCommand.sampleRate;
result.audioResamplerRatio = (double) (filterCommand.audioSampleRate) / (double) filterCommand.bandwidth;
2014-11-30 23:33:55 -05:00
float As = 60.0f; // stop-band attenuation [dB]
2015-01-11 17:08:16 -05:00
result.iqResampler = msresamp_crcf_create(result.iqResampleRatio, As);
result.audioResampler = msresamp_rrrf_create(result.audioResamplerRatio, As);
result.stereoResampler = msresamp_rrrf_create(result.audioResamplerRatio, As);
result.audioSampleRate = filterCommand.audioSampleRate;
result.bandwidth = filterCommand.bandwidth;
2015-01-11 17:08:16 -05:00
result.sampleRate = filterCommand.sampleRate;
2014-11-30 23:33:55 -05:00
resultQueue->push(result);
}
}
std::cout << "Demodulator worker thread done." << std::endl;
}
void DemodulatorWorkerThread::terminate() {
terminated = true;
DemodulatorWorkerThreadCommand inp; // push dummy to nudge queue
commandQueue->push(inp);
}