83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
// Copyright (c) Charles J. Cliffe
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// SPDX-License-Identifier: GPL-2.0+
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#include "FFTVisualDataThread.h"
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#include "CubicSDR.h"
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FFTVisualDataThread::FFTVisualDataThread() {
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linesPerSecond.store(DEFAULT_WATERFALL_LPS);
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lpsChanged.store(true);
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}
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FFTVisualDataThread::~FFTVisualDataThread() {
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}
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void FFTVisualDataThread::setLinesPerSecond(int lps) {
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linesPerSecond.store(lps);
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lpsChanged.store(true);
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}
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int FFTVisualDataThread::getLinesPerSecond() {
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return linesPerSecond.load();
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}
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SpectrumVisualProcessor *FFTVisualDataThread::getProcessor() {
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return &wproc;
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}
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void FFTVisualDataThread::run() {
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DemodulatorThreadInputQueue *pipeIQDataIn = static_cast<DemodulatorThreadInputQueue *>(getInputQueue("IQDataInput"));
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SpectrumVisualDataQueue *pipeFFTDataOut = static_cast<SpectrumVisualDataQueue *>(getOutputQueue("FFTDataOutput"));
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fftQueue.set_max_num_items(100);
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pipeFFTDataOut->set_max_num_items(100);
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//FFT distributor plumbing:
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// IQDataInput push samples to process to FFT Data distributor.
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fftDistrib.setInput(pipeIQDataIn);
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//The FFT distributor has actually 1 output only, so it doesn't distribute at all :)
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fftDistrib.attachOutput(&fftQueue);
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//FFT Distributor output is ==> SpectrumVisualProcessor input.
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wproc.setInput(&fftQueue);
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wproc.attachOutput(pipeFFTDataOut);
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wproc.setup(DEFAULT_FFT_SIZE);
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// std::cout << "FFT visual data thread started." << std::endl;
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while(!stopping) {
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//this if fed by FFTDataDistributor which has a buffer of FFT_DISTRIBUTOR_BUFFER_IN_SECONDS
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//so sleep for << FFT_DISTRIBUTOR_BUFFER_IN_SECONDS not to be overflown
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std::this_thread::sleep_for(std::chrono::milliseconds((int)(FFT_DISTRIBUTOR_BUFFER_IN_SECONDS * 1000.0 / 25.0)));
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int fftSize = wproc.getDesiredInputSize();
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if (fftSize) {
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fftDistrib.setFFTSize(fftSize);
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} else {
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fftDistrib.setFFTSize(DEFAULT_FFT_SIZE * SPECTRUM_VZM);
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}
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if (lpsChanged.load()) {
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fftDistrib.setLinesPerSecond(linesPerSecond.load());
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lpsChanged.store(false);
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}
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//Make FFT Distributor process IQ samples
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//and package them into ready-to-FFT sample sets (representing 1 line) by wproc
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fftDistrib.run();
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// Make wproc do a FFT of each of the sample sets provided by fftDistrib:
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while (!wproc.isInputEmpty()) {
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wproc.run();
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}
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}
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// std::cout << "FFT visual data thread done." << std::endl;
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}
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